mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-07 11:46:17 +09:00
fe7b7cd266
During bootm/z, U-Boot relocates the DTB and initrd to high memory so they are out of the way of the kernel. On ARM at least, some parts of high memory are "highmem" and can't be accessed at early boot. To solve this, we need to restrict this relocation process to use lower parts of RAM that area accessible. For the DTB, an earlier patch of mine set CONFIG_SYS_BOOTMAPSZ. However, since some platforms have different restrictions on DTB and initrd location, that config option doesn't affect the initrd. We need to set the initrd_high environment variable to control the initrd relocation. Since we have carefully chosen the load addresses for the DTB and initrd (see comments in include/configs/tegraNNN-common.h re: values in MEM_LAYOUT_ENV_SETTINGS), we don't actually need any DTB or initrd relocation at all. Skipping relocation removes some redundant work. Hence, set both fdt_high and initrd_high to ffffffff which completely disables relocation. If the user does something unusual, such as using custom locations for the DTB/initrd load address or wanting to use DTB/initrd relocation for some reason, they can simply set these variables to custom values to override these environment defaults. With this change, cmd_sysboot works correctly for a filesystem created by the Fedora installer. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
269 lines
6.1 KiB
C
269 lines
6.1 KiB
C
/*
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* (C) Copyright 2010-2012
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* NVIDIA Corporation <www.nvidia.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __TEGRA_COMMON_POST_H
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#define __TEGRA_COMMON_POST_H
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#ifdef CONFIG_BOOTCOMMAND
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#define BOOTCMDS_COMMON ""
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#else
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#ifdef CONFIG_CMD_MMC
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#define BOOTCMDS_MMC \
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"mmc_boot=" \
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"setenv devtype mmc; " \
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"if mmc dev ${devnum}; then " \
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"run scan_boot; " \
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"fi\0" \
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"bootcmd_mmc0=setenv devnum 0; run mmc_boot;\0" \
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"bootcmd_mmc1=setenv devnum 1; run mmc_boot;\0"
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#define BOOT_TARGETS_MMC "mmc1 mmc0"
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#else
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#define BOOTCMDS_MMC ""
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#define BOOT_TARGETS_MMC ""
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#endif
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#ifdef CONFIG_CMD_USB
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#define BOOTCMD_INIT_USB "run usb_init; "
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#define BOOTCMDS_USB \
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"usb_init=" \
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"if ${usb_need_init}; then " \
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"set 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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"setenv devtype usb; " \
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BOOTCMD_INIT_USB \
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"if usb dev ${devnum}; then " \
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"run scan_boot; " \
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"fi\0" \
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\
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"bootcmd_usb0=setenv devnum 0; run usb_boot;\0"
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#define BOOT_TARGETS_USB "usb0"
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#else
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#define BOOTCMD_INIT_USB ""
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#define BOOTCMDS_USB ""
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#define BOOT_TARGETS_USB ""
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#endif
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#ifdef CONFIG_CMD_DHCP
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#define BOOTCMDS_DHCP \
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"bootcmd_dhcp=" \
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BOOTCMD_INIT_USB \
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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 BOOT_TARGETS_DHCP "dhcp"
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#else
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#define BOOTCMDS_DHCP ""
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#define BOOT_TARGETS_DHCP ""
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#endif
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#if defined(CONFIG_CMD_DHCP) && defined(CONFIG_CMD_PXE)
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#define BOOTCMDS_PXE \
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"bootcmd_pxe=" \
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BOOTCMD_INIT_USB \
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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 BOOT_TARGETS_PXE "pxe"
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#else
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#define BOOTCMDS_PXE ""
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#define BOOT_TARGETS_PXE ""
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#endif
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#define BOOTCMDS_COMMON \
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"rootpart=1\0" \
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\
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"do_script_boot=" \
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"load ${devtype} ${devnum}:${rootpart} " \
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"${scriptaddr} ${prefix}${script}; " \
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"source ${scriptaddr}\0" \
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\
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"script_boot=" \
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"for script in ${boot_scripts}; do " \
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"if test -e ${devtype} ${devnum}:${rootpart} " \
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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 do_script_boot; " \
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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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"do_sysboot_boot=" \
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"sysboot ${devtype} ${devnum}:${rootpart} any " \
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"${scriptaddr} ${prefix}extlinux/extlinux.conf\0" \
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\
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"sysboot_boot=" \
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"if test -e ${devtype} ${devnum}:${rootpart} " \
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"${prefix}extlinux/extlinux.conf; then " \
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"echo Found ${prefix}extlinux/extlinux.conf; " \
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"run do_sysboot_boot; " \
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"echo SCRIPT FAILED: continuing...; " \
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"fi\0" \
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\
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"scan_boot=" \
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"echo Scanning ${devtype} ${devnum}...; " \
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"for prefix in ${boot_prefixes}; do " \
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"run sysboot_boot; " \
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"run script_boot; " \
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"done\0" \
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\
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"boot_targets=" \
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BOOT_TARGETS_MMC " " \
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BOOT_TARGETS_USB " " \
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BOOT_TARGETS_PXE " " \
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BOOT_TARGETS_DHCP " " \
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"\0" \
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\
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"boot_prefixes=/ /boot/\0" \
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\
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"boot_scripts=boot.scr.uimg boot.scr\0" \
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\
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BOOTCMDS_MMC \
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BOOTCMDS_USB \
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BOOTCMDS_DHCP \
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BOOTCMDS_PXE
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#define CONFIG_BOOTCOMMAND \
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"set usb_need_init; " \
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"for target in ${boot_targets}; do run bootcmd_${target}; done"
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#endif
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#ifdef CONFIG_TEGRA_KEYBOARD
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#define STDIN_KBD_KBC ",tegra-kbc"
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#else
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#define STDIN_KBD_KBC ""
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#endif
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#ifdef CONFIG_USB_KEYBOARD
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#define STDIN_KBD_USB ",usbkbd"
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#define CONFIG_SYS_USB_EVENT_POLL
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#define CONFIG_PREBOOT "usb start"
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#else
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#define STDIN_KBD_USB ""
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#endif
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#ifdef CONFIG_VIDEO_TEGRA
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#define STDOUT_LCD ",lcd"
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#else
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#define STDOUT_LCD ""
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#endif
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#define TEGRA_DEVICE_SETTINGS \
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"stdin=serial" STDIN_KBD_KBC STDIN_KBD_USB "\0" \
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"stdout=serial" STDOUT_LCD "\0" \
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"stderr=serial" STDOUT_LCD "\0" \
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""
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#ifndef BOARD_EXTRA_ENV_SETTINGS
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#define BOARD_EXTRA_ENV_SETTINGS
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#endif
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#define CONFIG_EXTRA_ENV_SETTINGS \
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TEGRA_DEVICE_SETTINGS \
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MEM_LAYOUT_ENV_SETTINGS \
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"fdt_high=ffffffff\0" \
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"initrd_high=ffffffff\0" \
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BOOTCMDS_COMMON \
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BOARD_EXTRA_ENV_SETTINGS
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#if defined(CONFIG_TEGRA20_SFLASH) || defined(CONFIG_TEGRA20_SLINK) || defined(CONFIG_TEGRA114_SPI)
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#define CONFIG_FDT_SPI
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#endif
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/* overrides for SPL build here */
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#ifdef CONFIG_SPL_BUILD
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#define CONFIG_SKIP_LOWLEVEL_INIT
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/* remove devicetree support */
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#ifdef CONFIG_OF_CONTROL
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#undef CONFIG_OF_CONTROL
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#endif
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/* remove I2C support */
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#ifdef CONFIG_SYS_I2C_TEGRA
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#undef CONFIG_SYS_I2C_TEGRA
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#endif
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#ifdef CONFIG_CMD_I2C
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#undef CONFIG_CMD_I2C
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#endif
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/* remove MMC support */
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#ifdef CONFIG_MMC
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#undef CONFIG_MMC
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#endif
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#ifdef CONFIG_GENERIC_MMC
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#undef CONFIG_GENERIC_MMC
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#endif
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#ifdef CONFIG_TEGRA_MMC
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#undef CONFIG_TEGRA_MMC
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#endif
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#ifdef CONFIG_CMD_MMC
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#undef CONFIG_CMD_MMC
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#endif
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/* remove partitions/filesystems */
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#ifdef CONFIG_DOS_PARTITION
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#undef CONFIG_DOS_PARTITION
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#endif
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#ifdef CONFIG_EFI_PARTITION
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#undef CONFIG_EFI_PARTITION
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#endif
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#ifdef CONFIG_CMD_FS_GENERIC
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#undef CONFIG_CMD_FS_GENERIC
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#endif
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#ifdef CONFIG_CMD_EXT4
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#undef CONFIG_CMD_EXT4
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#endif
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#ifdef CONFIG_CMD_EXT2
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#undef CONFIG_CMD_EXT2
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#endif
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#ifdef CONFIG_CMD_FAT
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#undef CONFIG_CMD_FAT
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#endif
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#ifdef CONFIG_FS_EXT4
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#undef CONFIG_FS_EXT4
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#endif
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#ifdef CONFIG_FS_FAT
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#undef CONFIG_FS_FAT
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#endif
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/* remove USB */
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#ifdef CONFIG_USB_EHCI
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#undef CONFIG_USB_EHCI
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#endif
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#ifdef CONFIG_USB_EHCI_TEGRA
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#undef CONFIG_USB_EHCI_TEGRA
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#endif
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#ifdef CONFIG_USB_STORAGE
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#undef CONFIG_USB_STORAGE
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#endif
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#ifdef CONFIG_CMD_USB
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#undef CONFIG_CMD_USB
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#endif
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/* remove part command support */
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#ifdef CONFIG_PARTITION_UUIDS
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#undef CONFIG_PARTITION_UUIDS
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#endif
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#ifdef CONFIG_CMD_PART
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#undef CONFIG_CMD_PART
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#endif
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#endif /* CONFIG_SPL_BUILD */
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#endif /* __TEGRA_COMMON_POST_H */
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