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</div> </modal-dialog></div> </div> <div data-action="click:qbsearch-input#retract" class="dark-backdrop position-fixed" hidden data-target="qbsearch-input.darkBackdrop"></div> <div class="color-fg-default"> <dialog-helper> <dialog data-target="qbsearch-input.feedbackDialog" data-action="close:qbsearch-input#handleDialogClose cancel:qbsearch-input#handleDialogClose" id="feedback-dialog" aria-modal="true" aria-labelledby="feedback-dialog-title" aria-describedby="feedback-dialog-description" data-view-component="true" class="Overlay Overlay-whenNarrow Overlay--size-medium Overlay--motion-scaleFade Overlay--disableScroll"> <div data-view-component="true" class="Overlay-header"> <div class="Overlay-headerContentWrap"> <div class="Overlay-titleWrap"> <h1 class="Overlay-title " id="feedback-dialog-title"> Provide feedback </h1> </div> <div class="Overlay-actionWrap"> <button data-close-dialog-id="feedback-dialog" aria-label="Close" type="button" data-view-component="true" class="close-button 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seriously.</p> <textarea name="feedback" class="form-control width-full mb-2" style="height: 120px" id="feedback"></textarea> <input name="include_email" id="include_email" aria-label="Include my email address so I can be contacted" class="form-control mr-2" type="checkbox"> <label for="include_email" style="font-weight: normal">Include my email address so I can be contacted</label> </form></div> </scrollable-region> <div data-view-component="true" class="Overlay-footer Overlay-footer--alignEnd"> <button data-close-dialog-id="feedback-dialog" type="button" data-view-component="true" class="btn"> Cancel </button> <button form="code-search-feedback-form" data-action="click:qbsearch-input#submitFeedback" type="submit" data-view-component="true" class="btn-primary btn"> Submit feedback </button> </div> </dialog></dialog-helper> <custom-scopes data-target="qbsearch-input.customScopesManager"> <dialog-helper> <dialog data-target="custom-scopes.customScopesModalDialog" data-action="close:qbsearch-input#handleDialogClose cancel:qbsearch-input#handleDialogClose" id="custom-scopes-dialog" aria-modal="true" aria-labelledby="custom-scopes-dialog-title" aria-describedby="custom-scopes-dialog-description" data-view-component="true" class="Overlay Overlay-whenNarrow Overlay--size-medium Overlay--motion-scaleFade Overlay--disableScroll"> <div data-view-component="true" class="Overlay-header Overlay-header--divided"> <div class="Overlay-headerContentWrap"> <div class="Overlay-titleWrap"> <h1 class="Overlay-title " id="custom-scopes-dialog-title"> Saved searches </h1> <h2 id="custom-scopes-dialog-description" class="Overlay-description">Use saved searches to filter your results more quickly</h2> </div> <div class="Overlay-actionWrap"> <button data-close-dialog-id="custom-scopes-dialog" aria-label="Close" type="button" data-view-component="true" class="close-button Overlay-closeButton"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" 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9.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.25-3.25a.75.75 0 0 1 1.06 0L10 7.94l4.72-4.72a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042Z"></path> </svg> </span> <span data-view-component="true" class="ActionListItem-label"> Insights </span> </a> </li> </ul> </div></action-list> </div> </div></anchored-position> </focus-group> </action-menu></div> </nav> </div> <turbo-frame id="repo-content-turbo-frame" target="_top" data-turbo-action="advance" class=""> <div id="repo-content-pjax-container" class="repository-content " > <h1 class='sr-only'>oreboot/oreboot</h1> <div class="clearfix container-xl px-md-4 px-lg-5 px-3"> <div> <div style="max-width: 100%" data-view-component="true" class="Layout Layout--flowRow-until-md react-repos-overview-margin Layout--sidebarPosition-end Layout--sidebarPosition-flowRow-end"> <div data-view-component="true" class="Layout-main"> <script crossorigin="anonymous" defer="defer" type="application/javascript" 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README\u003c/h1\u003e\u003ca id=\"user-content-oreboot-readme\" class=\"anchor\" aria-label=\"Permalink: oreboot README\" href=\"#oreboot-readme\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://github.com/oreboot/oreboot/actions/workflows/build.yml\"\u003e\u003cimg src=\"https://github.com/oreboot/oreboot/actions/workflows/build.yml/badge.svg\" alt=\"Build Status\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"/oreboot/oreboot/blob/main/Documentation/img/logo-small.png\"\u003e\u003cimg src=\"/oreboot/oreboot/raw/main/Documentation/img/logo-small.png\" alt=\"oreboot logo\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eoreboot is a downstream fork of coreboot, i.e. oreboot is coreboot without 'c'.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eoreboot is mostly written in Rust, with assembly where needed.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eoreboot currently only plans to support LinuxBoot payloads.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDemos\u003c/h2\u003e\u003ca id=\"user-content-demos\" class=\"anchor\" aria-label=\"Permalink: Demos\" href=\"#demos\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"https://asciinema.org/a/Ne4Fwa4Wpt95dorEoVnHwiEkP\" rel=\"nofollow\"\u003eoreboot for ARM in QEMU\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"https://asciinema.org/a/XnWkMWTABuajsbGPMMTefjuZ2\" rel=\"nofollow\"\u003eoreboot for RISC-V HiFive Unleashed in QEMU\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdetails\u003e\n \u003csummary\u003eOutput sample from oreboot on Allwinner D1\u003c/summary\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"oreboot 🦀\nv 13\ncpu_pll fa001000\ncpu_axi 5000100\ncpu_axi 5000100\nperi0_ctrl was: f8216300\nperi0_ctrl lock en\nperi0_ctrl PLLs\nperi0_ctrl set: f8216300\nDDR3@792MHz\ntest OK\n512M 🐏\nNOR flash: c2/2018\nload 00018000 bytes to 40000000: ➡️.\nload 00fc0000 bytes to 44000000: ➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️.\nload 00010000 bytes to 41a00000: ➡️.\n{ɕ serial uart0 initialized\nRISC-V vendor 5b7 arch 0 imp 0\n==== platform CSRs ====\n MXSTATUS c0408000\n MHCR 00000109\n MCOR 00000002\n MHINT 00004000\nsee C906 manual p581 ff\n=======================\nSet up extension CSRs\n==== platform CSRs ====\n MXSTATUS c0638000\n MHCR 0000017f\n MCOR 00000003\n MHINT 0000610c\nsee C906 manual p581 ff\n=======================\ntimer init\nreset init\nipi init\nRustSBI version 0.3.1\n.______ __ __ _______.___________. _______..______ __\n| _ \\ | | | | / | | / || _ \\ | |\n| |_) | | | | | | (----`---| |----`| (----`| |_) || |\n| / | | | | \\ \\ | | \\ \\ | _ \u0026lt; | |\n| |\\ \\----.| `--' |.----) | | | .----) | | |_) || |\n| _| `._____| \\______/ |_______/ |__| |_______/ |______/ |__|\nPlatform Name: T-HEAD Xuantie Platform\nImplementation: oreboot version 0.1.0\n[rustsbi] misa: RV64ACDFIMSUVX\n[rustsbi] mideleg: ssoftstimersext (0x222)\n[rustsbi] medeleg: imaialmalasmasauecallipagelpagespage(0xb1f3)\n[rustsbi] mie: msoft ssoft mtimer stimer mext sext (00000aaa)\nPMP0 0x0 - 0x40000000 (A,R,W,X)\nPMP1 0x40000000 - 0x40200000 (A,R)\nPMP2 0x40200000 - 0x80000000 (A,R,W,X)\nPMP3 0x80000000 - 0x80200000 (A,R)\nPMP4 0x80200000 - 0xfffff800 (A,R,W,X)\nPMP8 0x0 - 0x0 (A,R,W,X)\nDTB looks fine, yay!\nDecompress 12375521 bytes from 0x44000004 to 0x40200000, reserved 25165824 bytes\nSuccess, decompressed 21910144 bytes :)\nPayload looks like Linux Image, yay!\nDTB still fine, yay!\nHanding over to SBI, will continue at 0x40200000\nenter supervisor at 40200000 with DTB from 41a00000\n...\n[ 0.000000] OF: fdt: Ignoring memory range 0x40000000 - 0x40200000\n[ 0.000000] Machine model: Sipeed Lichee RV Dock\n[ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '')\n[ 0.000000] printk: bootconsole [sbi0] enabled\n[ 0.000000] Zone ranges:\n[ 0.000000] DMA32 [mem 0x0000000040200000-0x000000005fffffff]\n[ 0.000000] Normal empty\n[ 0.000000] Movable zone start for each node\n[ 0.000000] Early memory node ranges\n[ 0.000000] node 0: [mem 0x0000000040200000-0x000000005fffffff]\n[ 0.000000] Initmem setup node 0 [mem 0x0000000040200000-0x000000005fffffff]\n[ 0.000000] riscv: SBI specification v1.0 detected\n[ 0.000000] riscv: SBI implementation ID=0x4 Version=0x301\n[ 0.000000] riscv: SBI TIME extension detected\n[ 0.000000] riscv: SBI IPI extension detected\n[ 0.000000] riscv: SBI SRST extension detected\n[ 0.000000] riscv: base ISA extensions acdfim\n[ 0.000000] riscv: ELF capabilities acdfim\n[ 0.000000] percpu: Embedded 17 pages/cpu s31912 r8192 d29528 u69632\n[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 128520\n[ 0.000000] Kernel command line: console=tty0 console=ttyS0,115200 loglevel=7 earlycon=sbi\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eoreboot 🦀\nv 13\ncpu_pll fa001000\ncpu_axi 5000100\ncpu_axi 5000100\nperi0_ctrl was: f8216300\nperi0_ctrl lock en\nperi0_ctrl PLLs\nperi0_ctrl set: f8216300\nDDR3@792MHz\ntest OK\n512M 🐏\nNOR flash: c2/2018\nload 00018000 bytes to 40000000: ➡️.\nload 00fc0000 bytes to 44000000: ➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️.\nload 00010000 bytes to 41a00000: ➡️.\n{ɕ serial uart0 initialized\nRISC-V vendor 5b7 arch 0 imp 0\n==== platform CSRs ====\n MXSTATUS c0408000\n MHCR 00000109\n MCOR 00000002\n MHINT 00004000\nsee C906 manual p581 ff\n=======================\nSet up extension CSRs\n==== platform CSRs ====\n MXSTATUS c0638000\n MHCR 0000017f\n MCOR 00000003\n MHINT 0000610c\nsee C906 manual p581 ff\n=======================\ntimer init\nreset init\nipi init\nRustSBI version 0.3.1\n.______ __ __ _______.___________. _______..______ __\n| _ \\ | | | | / | | / || _ \\ | |\n| |_) | | | | | | (----`---| |----`| (----`| |_) || |\n| / | | | | \\ \\ | | \\ \\ | _ \u0026lt; | |\n| |\\ \\----.| `--' |.----) | | | .----) | | |_) || |\n| _| `._____| \\______/ |_______/ |__| |_______/ |______/ |__|\nPlatform Name: T-HEAD Xuantie Platform\nImplementation: oreboot version 0.1.0\n[rustsbi] misa: RV64ACDFIMSUVX\n[rustsbi] mideleg: ssoftstimersext (0x222)\n[rustsbi] medeleg: imaialmalasmasauecallipagelpagespage(0xb1f3)\n[rustsbi] mie: msoft ssoft mtimer stimer mext sext (00000aaa)\nPMP0 0x0 - 0x40000000 (A,R,W,X)\nPMP1 0x40000000 - 0x40200000 (A,R)\nPMP2 0x40200000 - 0x80000000 (A,R,W,X)\nPMP3 0x80000000 - 0x80200000 (A,R)\nPMP4 0x80200000 - 0xfffff800 (A,R,W,X)\nPMP8 0x0 - 0x0 (A,R,W,X)\nDTB looks fine, yay!\nDecompress 12375521 bytes from 0x44000004 to 0x40200000, reserved 25165824 bytes\nSuccess, decompressed 21910144 bytes :)\nPayload looks like Linux Image, yay!\nDTB still fine, yay!\nHanding over to SBI, will continue at 0x40200000\nenter supervisor at 40200000 with DTB from 41a00000\n...\n[ 0.000000] OF: fdt: Ignoring memory range 0x40000000 - 0x40200000\n[ 0.000000] Machine model: Sipeed Lichee RV Dock\n[ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '')\n[ 0.000000] printk: bootconsole [sbi0] enabled\n[ 0.000000] Zone ranges:\n[ 0.000000] DMA32 [mem 0x0000000040200000-0x000000005fffffff]\n[ 0.000000] Normal empty\n[ 0.000000] Movable zone start for each node\n[ 0.000000] Early memory node ranges\n[ 0.000000] node 0: [mem 0x0000000040200000-0x000000005fffffff]\n[ 0.000000] Initmem setup node 0 [mem 0x0000000040200000-0x000000005fffffff]\n[ 0.000000] riscv: SBI specification v1.0 detected\n[ 0.000000] riscv: SBI implementation ID=0x4 Version=0x301\n[ 0.000000] riscv: SBI TIME extension detected\n[ 0.000000] riscv: SBI IPI extension detected\n[ 0.000000] riscv: SBI SRST extension detected\n[ 0.000000] riscv: base ISA extensions acdfim\n[ 0.000000] riscv: ELF capabilities acdfim\n[ 0.000000] percpu: Embedded 17 pages/cpu s31912 r8192 d29528 u69632\n[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 128520\n[ 0.000000] Kernel command line: console=tty0 console=ttyS0,115200 loglevel=7 earlycon=sbi\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003c/details\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRust Embedded\u003c/h2\u003e\u003ca id=\"user-content-rust-embedded\" class=\"anchor\" aria-label=\"Permalink: Rust Embedded\" href=\"#rust-embedded\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"/oreboot/oreboot/blob/main/Documentation/img/rust-embedded-logo.png\"\u003e\u003cimg src=\"/oreboot/oreboot/raw/main/Documentation/img/rust-embedded-logo.png\" alt=\"Rust Embedded Working Group Logo\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWe build on top of the abstractions from the \u003ca href=\"https://github.com/rust-embedded\"\u003eRust Embedded Working Group\u003c/a\u003e's model with its crates and traits, detailed\nin \u003ca href=\"https://docs.rust-embedded.org/book/portability/index.html\" rel=\"nofollow\"\u003etheir book\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIn a nutshell: \u003ca target=\"_blank\" rel=\"noopener noreferrer\" href=\"/oreboot/oreboot/blob/main/Documentation/img/rust-embedded-model.png\"\u003e\u003cimg src=\"/oreboot/oreboot/raw/main/Documentation/img/rust-embedded-model.png\" alt=\"Rust Embedded Model\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eVendor support\u003c/h2\u003e\u003ca id=\"user-content-vendor-support\" class=\"anchor\" aria-label=\"Permalink: Vendor support\" href=\"#vendor-support\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSoC vendors are expected to provide documentation to their cores, peripherals\nand other blocks and/or their SVD files, so that we can generate the PAC and HAL\ncrates, or ideally, the vendor should \u003cem\u003eprovide and maintain\u003c/em\u003e those as well.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe Rust Embedded book offers \u003ca href=\"https://docs.rust-embedded.org/book/design-patterns/hal/index.html\" rel=\"nofollow\"\u003edesign patterns and implementation guidelines\u003c/a\u003e as well as\na \u003ca href=\"https://docs.rust-embedded.org/book/appendix/glossary.html\" rel=\"nofollow\"\u003eglossary\u003c/a\u003e to gain\nan understanding of the structure.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBoot Flow and Setup\u003c/h2\u003e\u003ca id=\"user-content-boot-flow-and-setup\" class=\"anchor\" aria-label=\"Permalink: Boot Flow and Setup\" href=\"#boot-flow-and-setup\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo get a general understanding of how oreboot and firmware in general works,\nhave a look at the \u003ca href=\"/oreboot/oreboot/blob/main/Documentation/boot-flow.md\"\u003eboot flow documentation\u003c/a\u003e. It\ndescribes how firmware is stored and boots up on a platform / SoC.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDilemma of drivers\u003c/h2\u003e\u003ca id=\"user-content-dilemma-of-drivers\" class=\"anchor\" aria-label=\"Permalink: Dilemma of drivers\" href=\"#dilemma-of-drivers\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eNote that oreboot does not aim to turn into its own operating system.\nAccordingly, we intend to keep the amount and functionality of drivers low.\nHowever, by design of SoCs, we do have to implement something to load code:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eSPI flash, SD cards and eMMC are rather simple to load from, but require\nspecial mechanisms and tools to write to the storage part\u003c/li\u003e\n\u003cli\u003eUSB and ethernet are more flexible for development as they allow for loading\ncode from another machine, but are more complex to implement\u003c/li\u003e\n\u003cli\u003eUART is simple for data transfer, but very slow for larger payloads, such as\na Linux kernel\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eIn many cases, no full driver is needed, since we only need to e.g. read from\nstorage, and we need no rich file systems. To avoid colliding with the needs and\nspecifics of an OS, we recommend clearly separating storage parts holding the\nfirmware and operating system, respectively. For example, put the firmware in a\nSPI flash and the OS on an NVMe SSD.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eGetting oreboot\u003c/h2\u003e\u003ca id=\"user-content-getting-oreboot\" class=\"anchor\" aria-label=\"Permalink: Getting oreboot\" href=\"#getting-oreboot\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eClone this repo and enter its directory, i.e.:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"git clone https://github.com/oreboot/oreboot.git\ncd oreboot\"\u003e\u003cpre\u003egit clone https://github.com/oreboot/oreboot.git\n\u003cspan class=\"pl-c1\"\u003ecd\u003c/span\u003e oreboot\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003ePrerequisites\u003c/h2\u003e\u003ca id=\"user-content-prerequisites\" class=\"anchor\" aria-label=\"Permalink: Prerequisites\" href=\"#prerequisites\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn general, you will need the following packages installed:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003edevice-tree-compiler\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003epkg-config\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003elibssl\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003erustup\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eFor Debian based systems, there is a make target to install those, which pulls\n\u003ccode\u003erustup\u003c/code\u003e through curl from \u003ca href=\"https://sh.rustup.rs\" rel=\"nofollow\"\u003ehttps://sh.rustup.rs\u003c/a\u003e:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"make debiansysprepare\"\u003e\u003cpre\u003emake debiansysprepare\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eOtherwise, install the package through your system package manager.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eSetting up the toolchain\u003c/h2\u003e\u003ca id=\"user-content-setting-up-the-toolchain\" class=\"anchor\" aria-label=\"Permalink: Setting up the toolchain\" href=\"#setting-up-the-toolchain\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eRegardless of your OS, you will need to install the toolchain for oreboot.\nThis command only needs to be done once but it is safe to do it repeatedly.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"make firsttime\"\u003e\u003cpre\u003emake firsttime\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eKeeping build tools up to date\u003c/h2\u003e\u003ca id=\"user-content-keeping-build-tools-up-to-date\" class=\"anchor\" aria-label=\"Permalink: Keeping build tools up to date\" href=\"#keeping-build-tools-up-to-date\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eEach time you start to work with oreboot, or even daily:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"cd oreboot\nmake update\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c1\"\u003ecd\u003c/span\u003e oreboot\nmake update\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYou should definitely do this before reporting any issues.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDeveloping oreboot\u003c/h2\u003e\u003ca id=\"user-content-developing-oreboot\" class=\"anchor\" aria-label=\"Permalink: Developing oreboot\" href=\"#developing-oreboot\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThere are two different things in the project:\u003c/p\u003e\n\u003col dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003esrc/mainboards/*\u003c/code\u003e the actual targets; those depend on and share crates, which\ncan be drivers, SoC init code, and similar. For mainboards, \u003ccode\u003eCargo.lock\u003c/code\u003e\n\u003cstrong\u003emust\u003c/strong\u003e be tracked.\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003esrc/*\u003c/code\u003e everything else; these are the aforementioned crates, for which, we\ndo not track the \u003ccode\u003eCargo.lock\u003c/code\u003e files.\u003c/li\u003e\n\u003c/ol\u003e\n\u003cp dir=\"auto\"\u003eChecking in a mainboard's \u003ccode\u003eCargo.lock\u003c/code\u003e file records the state of its dependencies\nat the time of a successful build, enabling reproducibility. Ideally, a lock file\nis updated follwoing successful boot on hardware.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFor more, see: \u003ca href=\"https://doc.rust-lang.org/cargo/faq.html#why-do-binaries-have-cargolock-in-version-control-but-not-libraries\" rel=\"nofollow\"\u003ehttps://doc.rust-lang.org/cargo/faq.html#why-do-binaries-have-cargolock-in-version-control-but-not-libraries\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eWhen creating a new mainboard, looking at how others are set up for the same\narchitecture is a good start. Be aware that oreboot is targeting bare metal, so\nthere is no standard library available.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eBuilding oreboot\u003c/h2\u003e\u003ca id=\"user-content-building-oreboot\" class=\"anchor\" aria-label=\"Permalink: Building oreboot\" href=\"#building-oreboot\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo build oreboot for a specific platform, do this:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# Go to the mainboard's directory\ncd src/mainboard/sunxi/nezha\n# Build the mainboard target\nmake mainboard\n# View disassembly\nmake objdump\n# Run from RAM without flashing\nmake run\n# Flash to the board\nmake flash\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# Go to the mainboard's directory\ncd src/mainboard/sunxi/nezha\n# Build the mainboard target\nmake mainboard\n# View disassembly\nmake objdump\n# Run from RAM without flashing\nmake run\n# Flash to the board\nmake flash\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe root \u003ccode\u003eMakefile\u003c/code\u003e allows you to quickly build all platforms:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# build all mainboards\nmake mainboards\n# build everything in parallel\nmake -j mainboards\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# build all mainboards\nmake mainboards\n# build everything in parallel\nmake -j mainboards\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eQEMU\u003c/h2\u003e\u003ca id=\"user-content-qemu\" class=\"anchor\" aria-label=\"Permalink: QEMU\" href=\"#qemu\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"# Install QEMU for your target platform, e.g. x86\nsudo apt install qemu-system-x86\n\n# Build release build and start with QEMU\ncd src/mainboard/emulation/qemu-q35 \u0026amp;\u0026amp; make run\n# Quit qemu with CTRL-A X\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003e# Install QEMU for your target platform, e.g. x86\nsudo apt install qemu-system-x86\n\n# Build release build and start with QEMU\ncd src/mainboard/emulation/qemu-q35 \u0026amp;\u0026amp; make run\n# Quit qemu with CTRL-A X\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo build QEMU from source for RISC-V:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"git clone https://github.com/qemu/qemu \u0026amp;\u0026amp; cd qemu\nmkdir build-riscv64 \u0026amp;\u0026amp; cd build-riscv64\n../configure --target-list=riscv64-softmmu\nmake -j$(nproc)\n# QEMU binary is at riscv64-softmmu/qemu-system-riscv64\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003egit clone https://github.com/qemu/qemu \u0026amp;\u0026amp; cd qemu\nmkdir build-riscv64 \u0026amp;\u0026amp; cd build-riscv64\n../configure --target-list=riscv64-softmmu\nmake -j$(nproc)\n# QEMU binary is at riscv64-softmmu/qemu-system-riscv64\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo build QEMU from source for aarch64:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"git clone https://github.com/qemu/qemu \u0026amp;\u0026amp; cd qemu\nmkdir build-aarch64 \u0026amp;\u0026amp; cd build-aarch64\n../configure --target-list=aarch64-softmmu\nmake -j$(nproc)\n# QEMU binary is at aarch64-softmmu/qemu-system-aarch64\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003egit clone https://github.com/qemu/qemu \u0026amp;\u0026amp; cd qemu\nmkdir build-aarch64 \u0026amp;\u0026amp; cd build-aarch64\n../configure --target-list=aarch64-softmmu\nmake -j$(nproc)\n# QEMU binary is at aarch64-softmmu/qemu-system-aarch64\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eMainboards\u003c/h2\u003e\u003ca id=\"user-content-mainboards\" class=\"anchor\" aria-label=\"Permalink: Mainboards\" href=\"#mainboards\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSimilar to coreboot, the structure in oreboot is per vendor and mainboard.\nMultiple architectures and SoCs are supported respectively, and their common\ncode is shared between the boards. Boards may have variants if minor deviations\nwould otherwise cause too much code duplication.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEmulation\u003c/h3\u003e\u003ca id=\"user-content-emulation\" class=\"anchor\" aria-label=\"Permalink: Emulation\" href=\"#emulation\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eqemu-riscv\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHardware\u003c/h3\u003e\u003ca id=\"user-content-hardware\" class=\"anchor\" aria-label=\"Permalink: Hardware\" href=\"#hardware\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch4 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRISC-V\u003c/h4\u003e\u003ca id=\"user-content-risc-v\" class=\"anchor\" aria-label=\"Permalink: RISC-V\" href=\"#risc-v\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch5 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAllwinner D1 SoC\u003c/h5\u003e\u003ca id=\"user-content-allwinner-d1-soc\" class=\"anchor\" aria-label=\"Permalink: Allwinner D1 SoC\" href=\"#allwinner-d1-soc\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eSipeed Lichee RV Dock / Dock Pro\u003c/li\u003e\n\u003cli\u003eMangoPi MQ-Pro\u003c/li\u003e\n\u003cli\u003eDongshanPi Nezha STU\u003c/li\u003e\n\u003cli\u003eAllwinner Nezha\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003ePrevious Implementations\u003c/h3\u003e\u003ca id=\"user-content-previous-implementations\" class=\"anchor\" aria-label=\"Permalink: Previous Implementations\" href=\"#previous-implementations\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eFor reference, \u003ca href=\"/oreboot/oreboot/blob/main/graveyard.md\"\u003eearlier approaches are documented\u003c/a\u003e. Have a look at\nthose for x86 and Arm platforms and mainboards.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eParked for Revival\u003c/h3\u003e\u003ca id=\"user-content-parked-for-revival\" class=\"anchor\" aria-label=\"Permalink: Parked for Revival\" href=\"#parked-for-revival\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eEarlier emulation targets have been parked in \u003ccode\u003esrc.broken/mainboard/emulation/\u003c/code\u003e.\nThey are supposed to provide a general understanding of each architecture that\noreboot seeks to support:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eqemu-armv7\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eqemu-aarch64\u003c/code\u003e\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eqemu-q35\u003c/code\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eGround Rules\u003c/h2\u003e\u003ca id=\"user-content-ground-rules\" class=\"anchor\" aria-label=\"Permalink: Ground Rules\" href=\"#ground-rules\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ccode\u003eMakefile\u003c/code\u003es must be simple. Use \u003ccode\u003extask\u003c/code\u003e instead for control flow, e.g., adding\nheaders or checksums to the binaries, sitchting images, etc..\u003c/li\u003e\n\u003cli\u003e\u003ccode\u003eCargo.toml\u003c/code\u003e in the respective \u003ccode\u003esrc/mainboard/$VENDOR/$BOARD\u003c/code\u003e (sub)directories\nallow for board-specific dependencies and building all stages in parallel.\u003c/li\u003e\n\u003cli\u003eAll code and markup is auto-formatted with \u003ccode\u003emake format\u003c/code\u003e with no exceptions.\nA CI check will tell if a change does not adhere to the formatting rules.\u003c/li\u003e\n\u003cli\u003eThere will be no code written in C. We write all code in Rust.\u003c/li\u003e\n\u003cli\u003eWe will not run our own Gerrit. We are using GitHub for now, and the GitHub\nPull Request review mechanism.\u003c/li\u003e\n\u003cli\u003eWe will not run our own Jenkins. We will use the most appropriate CI; for\nnow, that is GitHub, but we will be flexible.\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eCopyright and License\u003c/h2\u003e\u003ca id=\"user-content-copyright-and-license\" class=\"anchor\" aria-label=\"Permalink: Copyright and License\" href=\"#copyright-and-license\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe copyright on oreboot is owned by quite a large number of individual\ndevelopers and companies. Please check the individual source files for details.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eoreboot is licensed under the terms of the GNU General Public License (GPL).\nSome files are licensed under the \"GPL (version 2, or any later version)\",\nand some files are licensed under the \"GPL, version 2\". For some parts, which\nwere derived from other projects, other (GPL-compatible) licenses may apply.\nPlease check the individual source files for details.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThis makes the resulting oreboot images licensed under the GPL, version 2.\u003c/p\u003e\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"oreboot README","anchor":"oreboot-readme","htmlText":"oreboot README"},{"level":2,"text":"Demos","anchor":"demos","htmlText":"Demos"},{"level":2,"text":"Rust Embedded","anchor":"rust-embedded","htmlText":"Rust Embedded"},{"level":2,"text":"Vendor support","anchor":"vendor-support","htmlText":"Vendor support"},{"level":2,"text":"Boot Flow and Setup","anchor":"boot-flow-and-setup","htmlText":"Boot Flow and Setup"},{"level":2,"text":"Dilemma of drivers","anchor":"dilemma-of-drivers","htmlText":"Dilemma of drivers"},{"level":2,"text":"Getting oreboot","anchor":"getting-oreboot","htmlText":"Getting oreboot"},{"level":2,"text":"Prerequisites","anchor":"prerequisites","htmlText":"Prerequisites"},{"level":2,"text":"Setting up the toolchain","anchor":"setting-up-the-toolchain","htmlText":"Setting up the toolchain"},{"level":2,"text":"Keeping build tools up to date","anchor":"keeping-build-tools-up-to-date","htmlText":"Keeping build tools up to date"},{"level":2,"text":"Developing oreboot","anchor":"developing-oreboot","htmlText":"Developing oreboot"},{"level":2,"text":"Building oreboot","anchor":"building-oreboot","htmlText":"Building oreboot"},{"level":2,"text":"QEMU","anchor":"qemu","htmlText":"QEMU"},{"level":2,"text":"Mainboards","anchor":"mainboards","htmlText":"Mainboards"},{"level":3,"text":"Emulation","anchor":"emulation","htmlText":"Emulation"},{"level":3,"text":"Hardware","anchor":"hardware","htmlText":"Hardware"},{"level":4,"text":"RISC-V","anchor":"risc-v","htmlText":"RISC-V"},{"level":5,"text":"Allwinner D1 SoC","anchor":"allwinner-d1-soc","htmlText":"Allwinner D1 SoC"},{"level":3,"text":"Previous Implementations","anchor":"previous-implementations","htmlText":"Previous Implementations"},{"level":3,"text":"Parked for Revival","anchor":"parked-for-revival","htmlText":"Parked for Revival"},{"level":2,"text":"Ground Rules","anchor":"ground-rules","htmlText":"Ground Rules"},{"level":2,"text":"Copyright and License","anchor":"copyright-and-license","htmlText":"Copyright and License"}],"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Foreboot%2Foreboot"}},{"displayName":"COPYING","repoName":"oreboot","refName":"main","path":"COPYING","preferredFileType":"license","tabName":"GPL-2.0","richText":null,"loaded":false,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":null,"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Foreboot%2Foreboot"}}],"overviewFilesProcessingTime":0}},"appPayload":{"helpUrl":"https://docs.github.com","findFileWorkerPath":"/assets-cdn/worker/find-file-worker-7d7eb7c71814.js","findInFileWorkerPath":"/assets-cdn/worker/find-in-file-worker-708ec8ade250.js","githubDevUrl":null,"enabled_features":{"copilot_workspace":null,"code_nav_ui_events":false,"overview_shared_code_dropdown_button":false,"react_blob_overlay":false,"accessible_code_button":true,"github_models_repo_integration":false}}}}</script> <div data-target="react-partial.reactRoot"><style data-styled="true" 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js-snippet-clipboard-copy-unpositioned undefined" data-hpc="true"><article class="markdown-body entry-content container-lg" itemprop="text"><div class="markdown-heading" dir="auto"><h1 tabindex="-1" class="heading-element" dir="auto">oreboot README</h1><a id="user-content-oreboot-readme" class="anchor" aria-label="Permalink: oreboot README" href="#oreboot-readme"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="https://github.com/oreboot/oreboot/actions/workflows/build.yml"><img src="https://github.com/oreboot/oreboot/actions/workflows/build.yml/badge.svg" alt="Build Status" style="max-width: 100%;"></a></p> <p dir="auto"><a target="_blank" rel="noopener noreferrer" href="/oreboot/oreboot/blob/main/Documentation/img/logo-small.png"><img src="/oreboot/oreboot/raw/main/Documentation/img/logo-small.png" alt="oreboot logo" style="max-width: 100%;"></a></p> <p dir="auto">oreboot is a downstream fork of coreboot, i.e. oreboot is coreboot without 'c'.</p> <p dir="auto">oreboot is mostly written in Rust, with assembly where needed.</p> <p dir="auto">oreboot currently only plans to support LinuxBoot payloads.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Demos</h2><a id="user-content-demos" class="anchor" aria-label="Permalink: Demos" href="#demos"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><a href="https://asciinema.org/a/Ne4Fwa4Wpt95dorEoVnHwiEkP" rel="nofollow">oreboot for ARM in QEMU</a></li> <li><a href="https://asciinema.org/a/XnWkMWTABuajsbGPMMTefjuZ2" rel="nofollow">oreboot for RISC-V HiFive Unleashed in QEMU</a></li> </ul> <details> <summary>Output sample from oreboot on Allwinner D1</summary> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="oreboot 🦀 v 13 cpu_pll fa001000 cpu_axi 5000100 cpu_axi 5000100 peri0_ctrl was: f8216300 peri0_ctrl lock en peri0_ctrl PLLs peri0_ctrl set: f8216300 DDR3@792MHz test OK 512M 🐏 NOR flash: c2/2018 load 00018000 bytes to 40000000: ➡️. load 00fc0000 bytes to 44000000: ➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️. load 00010000 bytes to 41a00000: ➡️. {ɕ serial uart0 initialized RISC-V vendor 5b7 arch 0 imp 0 ==== platform CSRs ==== MXSTATUS c0408000 MHCR 00000109 MCOR 00000002 MHINT 00004000 see C906 manual p581 ff ======================= Set up extension CSRs ==== platform CSRs ==== MXSTATUS c0638000 MHCR 0000017f MCOR 00000003 MHINT 0000610c see C906 manual p581 ff ======================= timer init reset init ipi init RustSBI version 0.3.1 .______ __ __ _______.___________. _______..______ __ | _ \ | | | | / | | / || _ \ | | | |_) | | | | | | (----`---| |----`| (----`| |_) || | | / | | | | \ \ | | \ \ | _ < | | | |\ \----.| `--' |.----) | | | .----) | | |_) || | | _| `._____| \______/ |_______/ |__| |_______/ |______/ |__| Platform Name: T-HEAD Xuantie Platform Implementation: oreboot version 0.1.0 [rustsbi] misa: RV64ACDFIMSUVX [rustsbi] mideleg: ssoftstimersext (0x222) [rustsbi] medeleg: imaialmalasmasauecallipagelpagespage(0xb1f3) [rustsbi] mie: msoft ssoft mtimer stimer mext sext (00000aaa) PMP0 0x0 - 0x40000000 (A,R,W,X) PMP1 0x40000000 - 0x40200000 (A,R) PMP2 0x40200000 - 0x80000000 (A,R,W,X) PMP3 0x80000000 - 0x80200000 (A,R) PMP4 0x80200000 - 0xfffff800 (A,R,W,X) PMP8 0x0 - 0x0 (A,R,W,X) DTB looks fine, yay! Decompress 12375521 bytes from 0x44000004 to 0x40200000, reserved 25165824 bytes Success, decompressed 21910144 bytes :) Payload looks like Linux Image, yay! DTB still fine, yay! Handing over to SBI, will continue at 0x40200000 enter supervisor at 40200000 with DTB from 41a00000 ... [ 0.000000] OF: fdt: Ignoring memory range 0x40000000 - 0x40200000 [ 0.000000] Machine model: Sipeed Lichee RV Dock [ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '') [ 0.000000] printk: bootconsole [sbi0] enabled [ 0.000000] Zone ranges: [ 0.000000] DMA32 [mem 0x0000000040200000-0x000000005fffffff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000040200000-0x000000005fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000040200000-0x000000005fffffff] [ 0.000000] riscv: SBI specification v1.0 detected [ 0.000000] riscv: SBI implementation ID=0x4 Version=0x301 [ 0.000000] riscv: SBI TIME extension detected [ 0.000000] riscv: SBI IPI extension detected [ 0.000000] riscv: SBI SRST extension detected [ 0.000000] riscv: base ISA extensions acdfim [ 0.000000] riscv: ELF capabilities acdfim [ 0.000000] percpu: Embedded 17 pages/cpu s31912 r8192 d29528 u69632 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 128520 [ 0.000000] Kernel command line: console=tty0 console=ttyS0,115200 loglevel=7 earlycon=sbi"><pre class="notranslate"><code>oreboot 🦀 v 13 cpu_pll fa001000 cpu_axi 5000100 cpu_axi 5000100 peri0_ctrl was: f8216300 peri0_ctrl lock en peri0_ctrl PLLs peri0_ctrl set: f8216300 DDR3@792MHz test OK 512M 🐏 NOR flash: c2/2018 load 00018000 bytes to 40000000: ➡️. load 00fc0000 bytes to 44000000: ➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️. load 00010000 bytes to 41a00000: ➡️. {ɕ serial uart0 initialized RISC-V vendor 5b7 arch 0 imp 0 ==== platform CSRs ==== MXSTATUS c0408000 MHCR 00000109 MCOR 00000002 MHINT 00004000 see C906 manual p581 ff ======================= Set up extension CSRs ==== platform CSRs ==== MXSTATUS c0638000 MHCR 0000017f MCOR 00000003 MHINT 0000610c see C906 manual p581 ff ======================= timer init reset init ipi init RustSBI version 0.3.1 .______ __ __ _______.___________. _______..______ __ | _ \ | | | | / | | / || _ \ | | | |_) | | | | | | (----`---| |----`| (----`| |_) || | | / | | | | \ \ | | \ \ | _ < | | | |\ \----.| `--' |.----) | | | .----) | | |_) || | | _| `._____| \______/ |_______/ |__| |_______/ |______/ |__| Platform Name: T-HEAD Xuantie Platform Implementation: oreboot version 0.1.0 [rustsbi] misa: RV64ACDFIMSUVX [rustsbi] mideleg: ssoftstimersext (0x222) [rustsbi] medeleg: imaialmalasmasauecallipagelpagespage(0xb1f3) [rustsbi] mie: msoft ssoft mtimer stimer mext sext (00000aaa) PMP0 0x0 - 0x40000000 (A,R,W,X) PMP1 0x40000000 - 0x40200000 (A,R) PMP2 0x40200000 - 0x80000000 (A,R,W,X) PMP3 0x80000000 - 0x80200000 (A,R) PMP4 0x80200000 - 0xfffff800 (A,R,W,X) PMP8 0x0 - 0x0 (A,R,W,X) DTB looks fine, yay! Decompress 12375521 bytes from 0x44000004 to 0x40200000, reserved 25165824 bytes Success, decompressed 21910144 bytes :) Payload looks like Linux Image, yay! DTB still fine, yay! Handing over to SBI, will continue at 0x40200000 enter supervisor at 40200000 with DTB from 41a00000 ... [ 0.000000] OF: fdt: Ignoring memory range 0x40000000 - 0x40200000 [ 0.000000] Machine model: Sipeed Lichee RV Dock [ 0.000000] earlycon: sbi0 at I/O port 0x0 (options '') [ 0.000000] printk: bootconsole [sbi0] enabled [ 0.000000] Zone ranges: [ 0.000000] DMA32 [mem 0x0000000040200000-0x000000005fffffff] [ 0.000000] Normal empty [ 0.000000] Movable zone start for each node [ 0.000000] Early memory node ranges [ 0.000000] node 0: [mem 0x0000000040200000-0x000000005fffffff] [ 0.000000] Initmem setup node 0 [mem 0x0000000040200000-0x000000005fffffff] [ 0.000000] riscv: SBI specification v1.0 detected [ 0.000000] riscv: SBI implementation ID=0x4 Version=0x301 [ 0.000000] riscv: SBI TIME extension detected [ 0.000000] riscv: SBI IPI extension detected [ 0.000000] riscv: SBI SRST extension detected [ 0.000000] riscv: base ISA extensions acdfim [ 0.000000] riscv: ELF capabilities acdfim [ 0.000000] percpu: Embedded 17 pages/cpu s31912 r8192 d29528 u69632 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 128520 [ 0.000000] Kernel command line: console=tty0 console=ttyS0,115200 loglevel=7 earlycon=sbi </code></pre></div> </details> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Rust Embedded</h2><a id="user-content-rust-embedded" class="anchor" aria-label="Permalink: Rust Embedded" href="#rust-embedded"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a target="_blank" rel="noopener noreferrer" href="/oreboot/oreboot/blob/main/Documentation/img/rust-embedded-logo.png"><img src="/oreboot/oreboot/raw/main/Documentation/img/rust-embedded-logo.png" alt="Rust Embedded Working Group Logo" style="max-width: 100%;"></a></p> <p dir="auto">We build on top of the abstractions from the <a href="https://github.com/rust-embedded">Rust Embedded Working Group</a>'s model with its crates and traits, detailed in <a href="https://docs.rust-embedded.org/book/portability/index.html" rel="nofollow">their book</a>.</p> <p dir="auto">In a nutshell: <a target="_blank" rel="noopener noreferrer" href="/oreboot/oreboot/blob/main/Documentation/img/rust-embedded-model.png"><img src="/oreboot/oreboot/raw/main/Documentation/img/rust-embedded-model.png" alt="Rust Embedded Model" style="max-width: 100%;"></a></p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Vendor support</h2><a id="user-content-vendor-support" class="anchor" aria-label="Permalink: Vendor support" href="#vendor-support"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">SoC vendors are expected to provide documentation to their cores, peripherals and other blocks and/or their SVD files, so that we can generate the PAC and HAL crates, or ideally, the vendor should <em>provide and maintain</em> those as well.</p> <p dir="auto">The Rust Embedded book offers <a href="https://docs.rust-embedded.org/book/design-patterns/hal/index.html" rel="nofollow">design patterns and implementation guidelines</a> as well as a <a href="https://docs.rust-embedded.org/book/appendix/glossary.html" rel="nofollow">glossary</a> to gain an understanding of the structure.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Boot Flow and Setup</h2><a id="user-content-boot-flow-and-setup" class="anchor" aria-label="Permalink: Boot Flow and Setup" href="#boot-flow-and-setup"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">To get a general understanding of how oreboot and firmware in general works, have a look at the <a href="/oreboot/oreboot/blob/main/Documentation/boot-flow.md">boot flow documentation</a>. It describes how firmware is stored and boots up on a platform / SoC.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Dilemma of drivers</h2><a id="user-content-dilemma-of-drivers" class="anchor" aria-label="Permalink: Dilemma of drivers" href="#dilemma-of-drivers"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Note that oreboot does not aim to turn into its own operating system. Accordingly, we intend to keep the amount and functionality of drivers low. However, by design of SoCs, we do have to implement something to load code:</p> <ul dir="auto"> <li>SPI flash, SD cards and eMMC are rather simple to load from, but require special mechanisms and tools to write to the storage part</li> <li>USB and ethernet are more flexible for development as they allow for loading code from another machine, but are more complex to implement</li> <li>UART is simple for data transfer, but very slow for larger payloads, such as a Linux kernel</li> </ul> <p dir="auto">In many cases, no full driver is needed, since we only need to e.g. read from storage, and we need no rich file systems. To avoid colliding with the needs and specifics of an OS, we recommend clearly separating storage parts holding the firmware and operating system, respectively. For example, put the firmware in a SPI flash and the OS on an NVMe SSD.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Getting oreboot</h2><a id="user-content-getting-oreboot" class="anchor" aria-label="Permalink: Getting oreboot" href="#getting-oreboot"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Clone this repo and enter its directory, i.e.:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="git clone https://github.com/oreboot/oreboot.git cd oreboot"><pre>git clone https://github.com/oreboot/oreboot.git <span class="pl-c1">cd</span> oreboot</pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Prerequisites</h2><a id="user-content-prerequisites" class="anchor" aria-label="Permalink: Prerequisites" href="#prerequisites"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">In general, you will need the following packages installed:</p> <ul dir="auto"> <li><code>device-tree-compiler</code></li> <li><code>pkg-config</code></li> <li><code>libssl</code></li> <li><code>rustup</code></li> </ul> <p dir="auto">For Debian based systems, there is a make target to install those, which pulls <code>rustup</code> through curl from <a href="https://sh.rustup.rs" rel="nofollow">https://sh.rustup.rs</a>:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="make debiansysprepare"><pre>make debiansysprepare</pre></div> <p dir="auto">Otherwise, install the package through your system package manager.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Setting up the toolchain</h2><a id="user-content-setting-up-the-toolchain" class="anchor" aria-label="Permalink: Setting up the toolchain" href="#setting-up-the-toolchain"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Regardless of your OS, you will need to install the toolchain for oreboot. This command only needs to be done once but it is safe to do it repeatedly.</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="make firsttime"><pre>make firsttime</pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Keeping build tools up to date</h2><a id="user-content-keeping-build-tools-up-to-date" class="anchor" aria-label="Permalink: Keeping build tools up to date" href="#keeping-build-tools-up-to-date"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Each time you start to work with oreboot, or even daily:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="cd oreboot make update"><pre><span class="pl-c1">cd</span> oreboot make update</pre></div> <p dir="auto">You should definitely do this before reporting any issues.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Developing oreboot</h2><a id="user-content-developing-oreboot" class="anchor" aria-label="Permalink: Developing oreboot" href="#developing-oreboot"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">There are two different things in the project:</p> <ol dir="auto"> <li><code>src/mainboards/*</code> the actual targets; those depend on and share crates, which can be drivers, SoC init code, and similar. For mainboards, <code>Cargo.lock</code> <strong>must</strong> be tracked.</li> <li><code>src/*</code> everything else; these are the aforementioned crates, for which, we do not track the <code>Cargo.lock</code> files.</li> </ol> <p dir="auto">Checking in a mainboard's <code>Cargo.lock</code> file records the state of its dependencies at the time of a successful build, enabling reproducibility. Ideally, a lock file is updated follwoing successful boot on hardware.</p> <p dir="auto">For more, see: <a href="https://doc.rust-lang.org/cargo/faq.html#why-do-binaries-have-cargolock-in-version-control-but-not-libraries" rel="nofollow">https://doc.rust-lang.org/cargo/faq.html#why-do-binaries-have-cargolock-in-version-control-but-not-libraries</a></p> <p dir="auto">When creating a new mainboard, looking at how others are set up for the same architecture is a good start. Be aware that oreboot is targeting bare metal, so there is no standard library available.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Building oreboot</h2><a id="user-content-building-oreboot" class="anchor" aria-label="Permalink: Building oreboot" href="#building-oreboot"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">To build oreboot for a specific platform, do this:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# Go to the mainboard's directory cd src/mainboard/sunxi/nezha # Build the mainboard target make mainboard # View disassembly make objdump # Run from RAM without flashing make run # Flash to the board make flash"><pre class="notranslate"><code># Go to the mainboard's directory cd src/mainboard/sunxi/nezha # Build the mainboard target make mainboard # View disassembly make objdump # Run from RAM without flashing make run # Flash to the board make flash </code></pre></div> <p dir="auto">The root <code>Makefile</code> allows you to quickly build all platforms:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# build all mainboards make mainboards # build everything in parallel make -j mainboards"><pre class="notranslate"><code># build all mainboards make mainboards # build everything in parallel make -j mainboards </code></pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">QEMU</h2><a id="user-content-qemu" class="anchor" aria-label="Permalink: QEMU" href="#qemu"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="# Install QEMU for your target platform, e.g. x86 sudo apt install qemu-system-x86 # Build release build and start with QEMU cd src/mainboard/emulation/qemu-q35 && make run # Quit qemu with CTRL-A X"><pre class="notranslate"><code># Install QEMU for your target platform, e.g. x86 sudo apt install qemu-system-x86 # Build release build and start with QEMU cd src/mainboard/emulation/qemu-q35 && make run # Quit qemu with CTRL-A X </code></pre></div> <p dir="auto">To build QEMU from source for RISC-V:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="git clone https://github.com/qemu/qemu && cd qemu mkdir build-riscv64 && cd build-riscv64 ../configure --target-list=riscv64-softmmu make -j$(nproc) # QEMU binary is at riscv64-softmmu/qemu-system-riscv64"><pre class="notranslate"><code>git clone https://github.com/qemu/qemu && cd qemu mkdir build-riscv64 && cd build-riscv64 ../configure --target-list=riscv64-softmmu make -j$(nproc) # QEMU binary is at riscv64-softmmu/qemu-system-riscv64 </code></pre></div> <p dir="auto">To build QEMU from source for aarch64:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="git clone https://github.com/qemu/qemu && cd qemu mkdir build-aarch64 && cd build-aarch64 ../configure --target-list=aarch64-softmmu make -j$(nproc) # QEMU binary is at aarch64-softmmu/qemu-system-aarch64"><pre class="notranslate"><code>git clone https://github.com/qemu/qemu && cd qemu mkdir build-aarch64 && cd build-aarch64 ../configure --target-list=aarch64-softmmu make -j$(nproc) # QEMU binary is at aarch64-softmmu/qemu-system-aarch64 </code></pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Mainboards</h2><a id="user-content-mainboards" class="anchor" aria-label="Permalink: Mainboards" href="#mainboards"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Similar to coreboot, the structure in oreboot is per vendor and mainboard. Multiple architectures and SoCs are supported respectively, and their common code is shared between the boards. Boards may have variants if minor deviations would otherwise cause too much code duplication.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Emulation</h3><a id="user-content-emulation" class="anchor" aria-label="Permalink: Emulation" href="#emulation"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>qemu-riscv</code></li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Hardware</h3><a id="user-content-hardware" class="anchor" aria-label="Permalink: Hardware" href="#hardware"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h4 tabindex="-1" class="heading-element" dir="auto">RISC-V</h4><a id="user-content-risc-v" class="anchor" aria-label="Permalink: RISC-V" href="#risc-v"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h5 tabindex="-1" class="heading-element" dir="auto">Allwinner D1 SoC</h5><a id="user-content-allwinner-d1-soc" class="anchor" aria-label="Permalink: Allwinner D1 SoC" href="#allwinner-d1-soc"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Sipeed Lichee RV Dock / Dock Pro</li> <li>MangoPi MQ-Pro</li> <li>DongshanPi Nezha STU</li> <li>Allwinner Nezha</li> </ul> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Previous Implementations</h3><a id="user-content-previous-implementations" class="anchor" aria-label="Permalink: Previous Implementations" href="#previous-implementations"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">For reference, <a href="/oreboot/oreboot/blob/main/graveyard.md">earlier approaches are documented</a>. Have a look at those for x86 and Arm platforms and mainboards.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Parked for Revival</h3><a id="user-content-parked-for-revival" class="anchor" aria-label="Permalink: Parked for Revival" href="#parked-for-revival"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Earlier emulation targets have been parked in <code>src.broken/mainboard/emulation/</code>. They are supposed to provide a general understanding of each architecture that oreboot seeks to support:</p> <ul dir="auto"> <li><code>qemu-armv7</code></li> <li><code>qemu-aarch64</code></li> <li><code>qemu-q35</code></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Ground Rules</h2><a id="user-content-ground-rules" class="anchor" aria-label="Permalink: Ground Rules" href="#ground-rules"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li><code>Makefile</code>s must be simple. Use <code>xtask</code> instead for control flow, e.g., adding headers or checksums to the binaries, sitchting images, etc..</li> <li><code>Cargo.toml</code> in the respective <code>src/mainboard/$VENDOR/$BOARD</code> (sub)directories allow for board-specific dependencies and building all stages in parallel.</li> <li>All code and markup is auto-formatted with <code>make format</code> with no exceptions. A CI check will tell if a change does not adhere to the formatting rules.</li> <li>There will be no code written in C. We write all code in Rust.</li> <li>We will not run our own Gerrit. We are using GitHub for now, and the GitHub Pull Request review mechanism.</li> <li>We will not run our own Jenkins. We will use the most appropriate CI; for now, that is GitHub, but we will be flexible.</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Copyright and License</h2><a id="user-content-copyright-and-license" class="anchor" aria-label="Permalink: Copyright and License" href="#copyright-and-license"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">The copyright on oreboot is owned by quite a large number of individual developers and companies. Please check the individual source files for details.</p> <p dir="auto">oreboot is licensed under the terms of the GNU General Public License (GPL). Some files are licensed under the "GPL (version 2, or any later version)", and some files are licensed under the "GPL, version 2". For some parts, which were derived from other projects, other (GPL-compatible) licenses may apply. Please check the individual source files for details.</p> <p dir="auto">This makes the resulting oreboot images licensed under the GPL, version 2.</p> </article></div></div></div></div></div> <!-- --> <!-- --> <script type="application/json" id="__PRIMER_DATA_:R0:__">{"resolvedServerColorMode":"day"}</script></div> </react-partial> <input type="hidden" data-csrf="true" value="gJVGfxvrdYm4NomeELX/Eo3m6Y5KfZkMmgWsoe5TY7mTHhn4MeBTRMlSV6Vi4Zlhqe7l/fFYk6PDJW8vv9SVgw==" /> </div> <div data-view-component="true" class="Layout-sidebar"> <div class="BorderGrid about-margin" data-pjax> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <div class="hide-sm hide-md"> <h2 class="mb-3 h4">About</h2> <p class="f4 my-3"> oreboot is a fork of coreboot, with C removed, written in Rust. </p> <h3 class="sr-only">Topics</h3> <div class="my-3"> <div class="f6"> <a href="/topics/linux" title="Topic: linux" data-view-component="true" class="topic-tag topic-tag-link"> linux </a> <a href="/topics/rust" 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type="button" class="flash-close js-ajax-error-dismiss" aria-label="Dismiss error"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-x"> <path d="M3.72 3.72a.75.75 0 0 1 1.06 0L8 6.94l3.22-3.22a.749.749 0 0 1 1.275.326.749.749 0 0 1-.215.734L9.06 8l3.22 3.22a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L8 9.06l-3.22 3.22a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L6.94 8 3.72 4.78a.75.75 0 0 1 0-1.06Z"></path> </svg> </button> You can’t perform that action at this time. </div> <template id="site-details-dialog"> <details class="details-reset details-overlay details-overlay-dark lh-default color-fg-default hx_rsm" open> <summary role="button" aria-label="Close dialog"></summary> <details-dialog class="Box Box--overlay d-flex flex-column anim-fade-in fast hx_rsm-dialog hx_rsm-modal"> <button class="Box-btn-octicon m-0 btn-octicon position-absolute right-0 top-0" type="button" aria-label="Close dialog" data-close-dialog> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-x"> <path d="M3.72 3.72a.75.75 0 0 1 1.06 0L8 6.94l3.22-3.22a.749.749 0 0 1 1.275.326.749.749 0 0 1-.215.734L9.06 8l3.22 3.22a.749.749 0 0 1-.326 1.275.749.749 0 0 1-.734-.215L8 9.06l-3.22 3.22a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042L6.94 8 3.72 4.78a.75.75 0 0 1 0-1.06Z"></path> </svg> </button> <div class="octocat-spinner my-6 js-details-dialog-spinner"></div> </details-dialog> </details> </template> <div class="Popover js-hovercard-content position-absolute" style="display: none; outline: none;"> <div class="Popover-message Popover-message--bottom-left Popover-message--large Box color-shadow-large" style="width:360px;"> </div> </div> <template id="snippet-clipboard-copy-button"> <div class="zeroclipboard-container position-absolute right-0 top-0"> <clipboard-copy aria-label="Copy" class="ClipboardButton btn js-clipboard-copy m-2 p-0" data-copy-feedback="Copied!" data-tooltip-direction="w"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy js-clipboard-copy-icon m-2"> <path d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 0 1 0 1.5h-1.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-1.5a.75.75 0 0 1 1.5 0v1.5A1.75 1.75 0 0 1 9.25 16h-7.5A1.75 1.75 0 0 1 0 14.25Z"></path><path d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0 1 14.25 11h-7.5A1.75 1.75 0 0 1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z"></path> </svg> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-none m-2"> <path d="M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z"></path> </svg> </clipboard-copy> </div> </template> <template id="snippet-clipboard-copy-button-unpositioned"> <div class="zeroclipboard-container"> <clipboard-copy aria-label="Copy" class="ClipboardButton btn btn-invisible js-clipboard-copy m-2 p-0 d-flex flex-justify-center flex-items-center" data-copy-feedback="Copied!" data-tooltip-direction="w"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy js-clipboard-copy-icon"> <path d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 0 1 0 1.5h-1.5a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-1.5a.75.75 0 0 1 1.5 0v1.5A1.75 1.75 0 0 1 9.25 16h-7.5A1.75 1.75 0 0 1 0 14.25Z"></path><path d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0 1 14.25 11h-7.5A1.75 1.75 0 0 1 5 9.25Zm1.75-.25a.25.25 0 0 0-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 0 0 .25-.25v-7.5a.25.25 0 0 0-.25-.25Z"></path> </svg> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-none"> <path d="M13.78 4.22a.75.75 0 0 1 0 1.06l-7.25 7.25a.75.75 0 0 1-1.06 0L2.22 9.28a.751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018L6 10.94l6.72-6.72a.75.75 0 0 1 1.06 0Z"></path> </svg> </clipboard-copy> </div> </template> </div> <div id="js-global-screen-reader-notice" class="sr-only mt-n1" aria-live="polite" aria-atomic="true" ></div> <div id="js-global-screen-reader-notice-assertive" class="sr-only mt-n1" aria-live="assertive" aria-atomic="true"></div> </body> </html>