mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
74522c898b
UEFI defines a simple boot protocol for removable media. There we should look at the EFI (first GPT FAT) partition and search for /efi/boot/bootXXX.efi with XXX being different between different platforms (x86, x64, arm, aa64, ...). This patch implements a simple version of that protocol for the default distro boot script. With this we can automatically boot from valid UEFI enabled removable media. Because from all I could see U-Boot by default doesn't deliver device tree blobs with its firmware, we also need to load the dtb from somewhere. Traverse the same EFI partition for an fdt file that fits our current board so that an OS receives a valid device tree when booted automatically. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org>
331 lines
12 KiB
C
331 lines
12 KiB
C
/*
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* (C) Copyright 2014
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* NVIDIA Corporation <www.nvidia.com>
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*
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* Copyright 2014 Red Hat, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _CONFIG_CMD_DISTRO_BOOTCMD_H
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#define _CONFIG_CMD_DISTRO_BOOTCMD_H
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/*
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* A note on error handling: It is possible for BOOT_TARGET_DEVICES to
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* reference a device that is not enabled in the U-Boot configuration, e.g.
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* it may include MMC in the list without CONFIG_CMD_MMC being enabled. Given
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* that BOOT_TARGET_DEVICES is a macro that's expanded by the C pre-processor
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* at compile time, it's not possible to detect and report such problems via
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* a simple #ifdef/#error combination. Still, the code needs to report errors.
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* The best way I've found to do this is to make BOOT_TARGET_DEVICES expand to
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* reference a non-existent symbol, and have the name of that symbol encode
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* the error message. Consequently, this file contains references to e.g.
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* BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC. Given the
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* prevalence of capitals here, this looks like a pre-processor macro and
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* hence seems like it should be all capitals, but it's really an error
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* message that includes some other pre-processor symbols in the text.
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*/
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/* We need the part command */
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#define CONFIG_PARTITION_UUIDS
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#define CONFIG_CMD_PART
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#define BOOTENV_SHARED_BLKDEV_BODY(devtypel) \
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"if " #devtypel " dev ${devnum}; then " \
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"setenv devtype " #devtypel "; " \
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"run scan_dev_for_boot_part; " \
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"fi\0"
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#define BOOTENV_SHARED_BLKDEV(devtypel) \
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#devtypel "_boot=" \
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BOOTENV_SHARED_BLKDEV_BODY(devtypel)
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#define BOOTENV_DEV_BLKDEV(devtypeu, devtypel, instance) \
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"bootcmd_" #devtypel #instance "=" \
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"setenv devnum " #instance "; " \
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"run " #devtypel "_boot\0"
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#define BOOTENV_DEV_NAME_BLKDEV(devtypeu, devtypel, instance) \
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#devtypel #instance " "
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#ifdef CONFIG_SANDBOX
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#define BOOTENV_SHARED_HOST BOOTENV_SHARED_BLKDEV(host)
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#define BOOTENV_DEV_HOST BOOTENV_DEV_BLKDEV
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#define BOOTENV_DEV_NAME_HOST BOOTENV_DEV_NAME_BLKDEV
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#else
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#define BOOTENV_SHARED_HOST
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#define BOOTENV_DEV_HOST \
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BOOT_TARGET_DEVICES_references_HOST_without_CONFIG_SANDBOX
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#define BOOTENV_DEV_NAME_HOST \
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BOOT_TARGET_DEVICES_references_HOST_without_CONFIG_SANDBOX
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#endif
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#ifdef CONFIG_CMD_MMC
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#define BOOTENV_SHARED_MMC BOOTENV_SHARED_BLKDEV(mmc)
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#define BOOTENV_DEV_MMC BOOTENV_DEV_BLKDEV
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#define BOOTENV_DEV_NAME_MMC BOOTENV_DEV_NAME_BLKDEV
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#else
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#define BOOTENV_SHARED_MMC
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#define BOOTENV_DEV_MMC \
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BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC
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#define BOOTENV_DEV_NAME_MMC \
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BOOT_TARGET_DEVICES_references_MMC_without_CONFIG_CMD_MMC
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#endif
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#ifdef CONFIG_CMD_UBIFS
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#define BOOTENV_SHARED_UBIFS \
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"ubifs_boot=" \
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"if ubi part UBI && ubifsmount ubi${devnum}:boot; then " \
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"setenv devtype ubi; " \
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"setenv bootpart 0; " \
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"run scan_dev_for_boot; " \
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"fi\0"
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#define BOOTENV_DEV_UBIFS BOOTENV_DEV_BLKDEV
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#define BOOTENV_DEV_NAME_UBIFS BOOTENV_DEV_NAME_BLKDEV
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#else
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#define BOOTENV_SHARED_UBIFS
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#define BOOTENV_DEV_UBIFS \
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BOOT_TARGET_DEVICES_references_UBIFS_without_CONFIG_CMD_UBIFS
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#define BOOTENV_DEV_NAME_UBIFS \
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BOOT_TARGET_DEVICES_references_UBIFS_without_CONFIG_CMD_UBIFS
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#endif
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#ifdef CONFIG_EFI_LOADER
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#if defined(CONFIG_ARM64)
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#define BOOTEFI_NAME "bootaa64.efi"
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#elif defined(CONFIG_ARM)
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#define BOOTEFI_NAME "bootarm.efi"
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#endif
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#endif
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#ifdef BOOTEFI_NAME
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#define BOOTENV_SHARED_EFI \
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"boot_efi_binary=" \
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"load ${devtype} ${devnum}:${distro_bootpart} " \
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"${kernel_addr_r} efi/boot/"BOOTEFI_NAME"; " \
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"bootefi ${kernel_addr_r}\0" \
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\
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"load_efi_dtb=" \
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"load ${devtype} ${devnum}:${distro_bootpart} " \
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"${fdt_addr_r} ${prefix}${fdt_name}; " \
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"fdt addr ${fdt_addr_r}\0" \
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\
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"efi_dtb_prefixes=/ /dtb/ /dtb/current/\0" \
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"scan_dev_for_efi=" \
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"for prefix in ${efi_dtb_prefixes}; do " \
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"if test -e ${devtype} " \
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"${devnum}:${distro_bootpart} " \
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"${prefix}${fdt_name}; then " \
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"run load_efi_dtb; " \
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"fi;" \
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"done;" \
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"if test -e ${devtype} ${devnum}:${distro_bootpart} " \
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"efi/boot/"BOOTEFI_NAME"; then " \
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"echo Found EFI removable media binary " \
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"efi/boot/"BOOTEFI_NAME"; " \
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"run boot_efi_binary; " \
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"echo EFI LOAD FAILED: continuing...; " \
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"fi; \0"
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#define SCAN_DEV_FOR_EFI "run scan_dev_for_efi;"
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#else
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#define BOOTENV_SHARED_EFI
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#define SCAN_DEV_FOR_EFI
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#endif
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#ifdef CONFIG_CMD_SATA
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#define BOOTENV_SHARED_SATA BOOTENV_SHARED_BLKDEV(sata)
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#define BOOTENV_DEV_SATA BOOTENV_DEV_BLKDEV
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#define BOOTENV_DEV_NAME_SATA BOOTENV_DEV_NAME_BLKDEV
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#else
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#define BOOTENV_SHARED_SATA
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#define BOOTENV_DEV_SATA \
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BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA
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#define BOOTENV_DEV_NAME_SATA \
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BOOT_TARGET_DEVICES_references_SATA_without_CONFIG_CMD_SATA
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#endif
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#ifdef CONFIG_CMD_SCSI
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#define BOOTENV_RUN_SCSI_INIT "run scsi_init; "
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#define BOOTENV_SET_SCSI_NEED_INIT "setenv scsi_need_init; "
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#define BOOTENV_SHARED_SCSI \
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"scsi_init=" \
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"if ${scsi_need_init}; then " \
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"setenv scsi_need_init false; " \
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"scsi scan; " \
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"fi\0" \
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\
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"scsi_boot=" \
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BOOTENV_RUN_SCSI_INIT \
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BOOTENV_SHARED_BLKDEV_BODY(scsi)
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#define BOOTENV_DEV_SCSI BOOTENV_DEV_BLKDEV
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#define BOOTENV_DEV_NAME_SCSI BOOTENV_DEV_NAME_BLKDEV
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#else
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#define BOOTENV_RUN_SCSI_INIT
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#define BOOTENV_SET_SCSI_NEED_INIT
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#define BOOTENV_SHARED_SCSI
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#define BOOTENV_DEV_SCSI \
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BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI
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#define BOOTENV_DEV_NAME_SCSI \
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BOOT_TARGET_DEVICES_references_SCSI_without_CONFIG_CMD_SCSI
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#endif
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#ifdef CONFIG_CMD_IDE
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#define BOOTENV_SHARED_IDE BOOTENV_SHARED_BLKDEV(ide)
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#define BOOTENV_DEV_IDE BOOTENV_DEV_BLKDEV
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#define BOOTENV_DEV_NAME_IDE BOOTENV_DEV_NAME_BLKDEV
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#else
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#define BOOTENV_SHARED_IDE
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#define BOOTENV_DEV_IDE \
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BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE
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#define BOOTENV_DEV_NAME_IDE \
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BOOT_TARGET_DEVICES_references_IDE_without_CONFIG_CMD_IDE
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#endif
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#if defined(CONFIG_CMD_PCI_ENUM) || defined(CONFIG_DM_PCI)
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#define BOOTENV_RUN_NET_PCI_ENUM "run boot_net_pci_enum; "
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#define BOOTENV_SHARED_PCI \
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"boot_net_pci_enum=pci enum\0"
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#else
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#define BOOTENV_RUN_NET_PCI_ENUM
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#define BOOTENV_SHARED_PCI
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#endif
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#ifdef CONFIG_CMD_USB
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#define BOOTENV_RUN_NET_USB_START "run boot_net_usb_start; "
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#define BOOTENV_SHARED_USB \
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"boot_net_usb_start=usb start\0" \
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"usb_boot=" \
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"usb start; " \
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BOOTENV_SHARED_BLKDEV_BODY(usb)
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#define BOOTENV_DEV_USB BOOTENV_DEV_BLKDEV
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#define BOOTENV_DEV_NAME_USB BOOTENV_DEV_NAME_BLKDEV
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#else
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#define BOOTENV_RUN_NET_USB_START
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#define BOOTENV_SHARED_USB
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#define BOOTENV_DEV_USB \
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BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB
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#define BOOTENV_DEV_NAME_USB \
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BOOT_TARGET_DEVICES_references_USB_without_CONFIG_CMD_USB
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#endif
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#if defined(CONFIG_CMD_DHCP)
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#define BOOTENV_DEV_DHCP(devtypeu, devtypel, instance) \
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"bootcmd_dhcp=" \
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BOOTENV_RUN_NET_USB_START \
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BOOTENV_RUN_NET_PCI_ENUM \
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"if dhcp ${scriptaddr} ${boot_script_dhcp}; then " \
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"source ${scriptaddr}; " \
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"fi\0"
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#define BOOTENV_DEV_NAME_DHCP(devtypeu, devtypel, instance) \
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"dhcp "
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#else
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#define BOOTENV_DEV_DHCP \
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BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP
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#define BOOTENV_DEV_NAME_DHCP \
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BOOT_TARGET_DEVICES_references_DHCP_without_CONFIG_CMD_DHCP
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#endif
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#if defined(CONFIG_CMD_DHCP) && defined(CONFIG_CMD_PXE)
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#define BOOTENV_DEV_PXE(devtypeu, devtypel, instance) \
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"bootcmd_pxe=" \
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BOOTENV_RUN_NET_USB_START \
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BOOTENV_RUN_NET_PCI_ENUM \
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"dhcp; " \
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"if pxe get; then " \
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"pxe boot; " \
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"fi\0"
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#define BOOTENV_DEV_NAME_PXE(devtypeu, devtypel, instance) \
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"pxe "
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#else
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#define BOOTENV_DEV_PXE \
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BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE
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#define BOOTENV_DEV_NAME_PXE \
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BOOT_TARGET_DEVICES_references_PXE_without_CONFIG_CMD_DHCP_or_PXE
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#endif
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#define BOOTENV_DEV_NAME(devtypeu, devtypel, instance) \
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BOOTENV_DEV_NAME_##devtypeu(devtypeu, devtypel, instance)
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#define BOOTENV_BOOT_TARGETS \
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"boot_targets=" BOOT_TARGET_DEVICES(BOOTENV_DEV_NAME) "\0"
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#define BOOTENV_DEV(devtypeu, devtypel, instance) \
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BOOTENV_DEV_##devtypeu(devtypeu, devtypel, instance)
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#define BOOTENV \
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BOOTENV_SHARED_HOST \
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BOOTENV_SHARED_MMC \
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BOOTENV_SHARED_PCI \
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BOOTENV_SHARED_USB \
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BOOTENV_SHARED_SATA \
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BOOTENV_SHARED_SCSI \
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BOOTENV_SHARED_IDE \
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BOOTENV_SHARED_UBIFS \
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BOOTENV_SHARED_EFI \
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"boot_prefixes=/ /boot/\0" \
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"boot_scripts=boot.scr.uimg boot.scr\0" \
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"boot_script_dhcp=boot.scr.uimg\0" \
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BOOTENV_BOOT_TARGETS \
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\
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"boot_extlinux=" \
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"sysboot ${devtype} ${devnum}:${distro_bootpart} any " \
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"${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \
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\
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"scan_dev_for_extlinux=" \
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"if test -e ${devtype} " \
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"${devnum}:${distro_bootpart} " \
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"${prefix}extlinux/extlinux.conf; then " \
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"echo Found ${prefix}extlinux/extlinux.conf; " \
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"run boot_extlinux; " \
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"echo SCRIPT FAILED: continuing...; " \
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"fi\0" \
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\
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"boot_a_script=" \
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"load ${devtype} ${devnum}:${distro_bootpart} " \
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"${scriptaddr} ${prefix}${script}; " \
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"source ${scriptaddr}\0" \
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\
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"scan_dev_for_scripts=" \
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"for script in ${boot_scripts}; do " \
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"if test -e ${devtype} " \
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"${devnum}:${distro_bootpart} " \
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"${prefix}${script}; then " \
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"echo Found U-Boot script " \
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"${prefix}${script}; " \
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"run boot_a_script; " \
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"echo SCRIPT FAILED: continuing...; " \
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"fi; " \
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"done\0" \
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\
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"scan_dev_for_boot=" \
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"echo Scanning ${devtype} " \
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"${devnum}:${distro_bootpart}...; " \
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"for prefix in ${boot_prefixes}; do " \
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"run scan_dev_for_extlinux; " \
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"run scan_dev_for_scripts; " \
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"done;" \
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SCAN_DEV_FOR_EFI \
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"\0" \
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\
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"scan_dev_for_boot_part=" \
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"part list ${devtype} ${devnum} -bootable devplist; " \
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"env exists devplist || setenv devplist 1; " \
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"for distro_bootpart in ${devplist}; do " \
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"if fstype ${devtype} " \
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"${devnum}:${distro_bootpart} " \
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"bootfstype; then " \
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"run scan_dev_for_boot; " \
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"fi; " \
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"done\0" \
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\
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BOOT_TARGET_DEVICES(BOOTENV_DEV) \
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\
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"distro_bootcmd=" BOOTENV_SET_SCSI_NEED_INIT \
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"for target in ${boot_targets}; do " \
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"run bootcmd_${target}; " \
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"done\0"
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#ifndef CONFIG_BOOTCOMMAND
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#define CONFIG_BOOTCOMMAND "run distro_bootcmd"
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#endif
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#endif /* _CONFIG_CMD_DISTRO_BOOTCMD_H */
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