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https://xff.cz/git/u-boot/
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2a43201a13
This generic $bootcmd, and associated support macros, automatically searches a defined set of storage devices (or network protocols) for an extlinux configuration file or U-Boot boot script in various standardized locations. Distros that install such a boot config file/script in those standard locations will get easy-to-set-up booting on HW that enables this generic $bootcmd. Boards can define the set of devices from which boot is attempted, and the order in which they are attempted. Users may later customize this set/order by edting $boot_targets. Users may interrupt the boot process and boot from a specific device simply by executing e.g.: $ run bootcmd_mmc1 or: $ run bootcmd_pxe This patch was originally written by Dennis Gilmore based on Tegra and rpi_b boot scripts. I have made the following modifications since then: * Boards must define the BOOT_TARGET_DEVICES macro in order to specify the set of devices (and order) from which to attempt boot. If needed, we can define a default directly in config_distro_bootcmd.h. * Removed $env_import and related variables; nothing used them, and I think it's better for boards to pre-load an environment customization file using CONFIG_PREBOOT if they need. * Renamed a bunch of variables to suit my whims:-) Signed-off-by: Dennis Gilmore <dennis@ausil.us> Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Marek Vasut <marex@denx.de> Acked-by: Simon Glass <sjg@chromium.org>
198 lines
6.5 KiB
C
198 lines
6.5 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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#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; " \
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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_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_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_SHARED_SCSI BOOTENV_SHARED_BLKDEV(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_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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#ifdef CONFIG_CMD_USB
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#define BOOTENV_RUN_USB_INIT "run usb_init; "
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#define BOOTENV_SET_USB_NEED_INIT "setenv usb_need_init; "
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#define BOOTENV_SHARED_USB \
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"usb_init=" \
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"if ${usb_need_init}; then " \
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"setenv usb_need_init false; " \
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"usb start 0; " \
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"fi\0" \
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\
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"usb_boot=" \
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BOOTENV_RUN_USB_INIT \
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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_USB_INIT
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#define BOOTENV_SET_USB_NEED_INIT
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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_USB_INIT \
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"if dhcp ${scriptaddr} boot.scr.uimg; 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_USB_INIT \
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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_MMC \
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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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"boot_prefixes=/ /boot/\0" \
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"boot_scripts=boot.scr.uimg boot.scr\0" \
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BOOTENV_BOOT_TARGETS \
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"bootpart=1\0" \
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\
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"boot_extlinux=" \
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"sysboot ${devtype} ${devnum}:${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} ${devnum}:${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} ${devnum}:${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} ${devnum}:${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} ${devnum}...; " \
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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\0" \
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\
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BOOT_TARGET_DEVICES(BOOTENV_DEV) \
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\
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"bootcmd=" BOOTENV_SET_USB_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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#endif /* _CONFIG_CMD_DISTRO_BOOTCMD_H */
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