mirror of
https://github.com/AsahiLinux/u-boot
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938176a482
Currently, Tegra's default environment uses non-standard variables to define where boot scripts should load the kernel, FDT, and initrd. This change both changes the variable names to match those described in U-Boot's README, and shuffles their values around a little so that the values make a little more sense; see comments in the patch for rationale behind the values chosen. Note that this patch does remove the old non-standard variable "fdt_load" from the default environment, so this patch requires people to change their boot scripts. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
242 lines
6.1 KiB
C
242 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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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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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_EXT2
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#define BOOT_FSTYPE_EXT2 "ext2 "
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#else
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#define BOOT_FSTYPE_EXT2 ""
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#endif
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#ifdef CONFIG_CMD_FAT
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#define BOOT_FSTYPE_FAT "fat"
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#else
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#define BOOT_FSTYPE_FAT ""
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#endif
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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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#define BOOTCMDS_COMMON \
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"rootpart=1\0" \
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\
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"script_boot=" \
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"if ${fs}load ${devtype} ${devnum}:${rootpart} " \
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"${scriptaddr} ${prefix}${script}; then " \
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"echo ${script} found! Executing ...;" \
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"source ${scriptaddr};" \
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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 fs in ${boot_fstypes}; do " \
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"for prefix in ${boot_prefixes}; do " \
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"for script in ${boot_scripts}; do " \
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"run script_boot; " \
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"done; " \
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"done; " \
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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_DHCP " " \
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"\0" \
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\
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"boot_fstypes=" \
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BOOT_FSTYPE_EXT2 " " \
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BOOT_FSTYPE_FAT " " \
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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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#define CONFIG_BOOTCOMMAND \
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"for target in ${boot_targets}; do run bootcmd_${target}; done"
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#endif
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/*
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* Memory layout for where various images get loaded by boot scripts:
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*
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* scriptaddr can be pretty much anywhere that doesn't conflict with something
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* else. Put it above BOOTMAPSZ to eliminate conflicts.
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*
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* kernel_addr_r must be within the first 128M of RAM in order for the
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* kernel's CONFIG_AUTO_ZRELADDR option to work. Since the kernel will
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* decompress itself to 0x8000 after the start of RAM, kernel_addr_r
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* should not overlap that area, or the kernel will have to copy itself
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* somewhere else before decompression. Similarly, the address of any other
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* data passed to the kernel shouldn't overlap the start of RAM. Pushing
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* this up to 16M allows for a sizable kernel to be decompressed below the
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* compressed load address.
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*
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* fdt_addr_r simply shouldn't overlap anything else. Choosing 32M allows for
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* the compressed kernel to be up to 16M too.
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*
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* ramdisk_addr_r simply shouldn't overlap anything else. Choosing 33M allows
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* for the FDT/DTB to be up to 1M, which is hopefully plenty.
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*/
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#define MEM_LAYOUT_ENV_SETTINGS \
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"scriptaddr=0x10000000\0" \
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"kernel_addr_r=0x01000000\0" \
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"fdt_addr_r=0x02000000\0" \
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"ramdisk_addr_r=0x02100000\0" \
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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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BOOTCMDS_COMMON
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/* overrides for SPL build here */
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#ifdef CONFIG_SPL_BUILD
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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_TEGRA_I2C
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#undef CONFIG_TEGRA_I2C
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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_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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/* 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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