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https://github.com/brain-hackers/u-boot-brain
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env: ti: boot: Boot Android with dynamic partitions
Changes:
- use boot.img instead of boot_fit.img
- use .dtb from boot.img v2
- implement recovery boot
- always boot ramdisk from boot.img, we can't mount system as root
now, as system is a logical partition inside of super partition
- don't add "skip_initramfs" to cmdline anymore
- to boot into recovery, use boot image from recovery partition
- prepare partition table:
- A/B scheme
- use 'super' partition instead of 'system' and 'vendor'
- add dtbo partitions
- introduce metadata partition
Not implemented: reading and applying dtbo blobs from dtbo partition.
Signed-off-by: Sam Protsenko <joe.skb7@gmail.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Sam Protsenko
Lokesh Vutla
parent
0f5103dee3
commit
d94e6dbcf6
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@ -13,30 +13,14 @@
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#define CONSOLEDEV "ttyS2"
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#endif
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#define VBMETA_PART_SIZE (64 * 1024)
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#if defined(CONFIG_LIBAVB)
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#define VBMETA_PART \
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"name=vbmeta,size=" __stringify(VBMETA_PART_SIZE) \
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",uuid=${uuid_gpt_vbmeta};"
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#else
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#define VBMETA_PART ""
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#endif
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#if defined(CONFIG_CMD_AB_SELECT)
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#define COMMON_PARTS \
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"name=boot_a,size=20M,uuid=${uuid_gpt_boot_a};" \
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"name=boot_b,size=20M,uuid=${uuid_gpt_boot_b};" \
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"name=system_a,size=1024M,uuid=${uuid_gpt_system_a};" \
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"name=system_b,size=1024M,uuid=${uuid_gpt_system_b};"
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#else
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#define COMMON_PARTS \
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"name=boot,size=20M,uuid=${uuid_gpt_boot};" \
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"name=system,size=1024M,uuid=${uuid_gpt_system};"
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#endif
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#ifndef PARTS_DEFAULT
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/* Define the default GPT table for eMMC */
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/*
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* Default GPT tables for eMMC (Linux and Android). Notes:
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* 1. Keep partitions aligned to erase group size (512 KiB) when possible
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* 2. Keep partitions in sync with DFU_ALT_INFO_EMMC (see dfu.h)
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* 3. Keep 'bootloader' partition (U-Boot proper) start address in sync with
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* CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR (see common/spl/Kconfig)
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*/
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#define PARTS_DEFAULT \
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/* Linux partitions */ \
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"uuid_disk=${uuid_gpt_disk};" \
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@ -49,10 +33,15 @@
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"name=bootloader,size=2048K,uuid=${uuid_gpt_bootloader};" \
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"name=uboot-env,start=2432K,size=256K,uuid=${uuid_gpt_reserved};" \
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"name=misc,size=128K,uuid=${uuid_gpt_misc};" \
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"name=recovery,size=40M,uuid=${uuid_gpt_recovery};" \
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COMMON_PARTS \
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"name=vendor,size=256M,uuid=${uuid_gpt_vendor};" \
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VBMETA_PART \
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"name=boot_a,size=20M,uuid=${uuid_gpt_boot_a};" \
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"name=boot_b,size=20M,uuid=${uuid_gpt_boot_b};" \
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"name=dtbo_a,size=8M,uuid=${uuid_gpt_dtbo_a};" \
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"name=dtbo_b,size=8M,uuid=${uuid_gpt_dtbo_b};" \
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"name=vbmeta_a,size=64K,uuid=${uuid_gpt_vbmeta_a};" \
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"name=vbmeta_b,size=64K,uuid=${uuid_gpt_vbmeta_b};" \
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"name=recovery,size=64M,uuid=${uuid_gpt_recovery};" \
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"name=super,size=2560M,uuid=${uuid_gpt_super};" \
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"name=metadata,size=16M,uuid=${uuid_gpt_metadata};" \
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"name=userdata,size=-,uuid=${uuid_gpt_userdata}"
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#endif /* PARTS_DEFAULT */
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@ -72,7 +61,7 @@
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#define CONTROL_PARTITION "misc"
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#if defined(CONFIG_CMD_AB_SELECT)
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#define AB_SELECT \
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#define AB_SELECT_SLOT \
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"if part number mmc 1 " CONTROL_PARTITION " control_part_number; " \
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"then " \
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"echo " CONTROL_PARTITION \
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@ -82,20 +71,14 @@
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"echo " CONTROL_PARTITION " partition not found;" \
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"exit;" \
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"fi;" \
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"setenv slot_suffix _${slot_name};" \
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"if part number mmc ${mmcdev} system${slot_suffix} " \
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"system_part_number; then " \
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"setenv bootargs_ab " \
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"ro root=/dev/mmcblk${mmcdev}p${system_part_number} " \
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"rootwait init=/init skip_initramfs " \
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"androidboot.slot_suffix=${slot_suffix};" \
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"echo A/B cmdline addition: ${bootargs_ab};" \
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"setenv bootargs ${bootargs} ${bootargs_ab};" \
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"else " \
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"echo system${slot_suffix} partition not found;" \
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"fi;"
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"setenv slot_suffix _${slot_name};"
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#define AB_SELECT_ARGS \
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"setenv bootargs_ab androidboot.slot_suffix=${slot_suffix}; " \
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"echo A/B cmdline addition: ${bootargs_ab};" \
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"setenv bootargs ${bootargs} ${bootargs_ab};"
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#else
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#define AB_SELECT ""
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#define AB_SELECT_SLOT ""
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#define AB_SELECT_ARGS ""
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#endif
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#define FASTBOOT_CMD \
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@ -121,46 +104,46 @@
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"setenv mmcroot /dev/mmcblk0p2 rw; " \
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"run mmcboot;\0" \
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"emmc_android_boot=" \
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"setenv mmcdev 1; " \
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"mmc dev $mmcdev; " \
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"mmc rescan; " \
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AB_SELECT_SLOT \
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"if bcb load " __stringify(CONFIG_FASTBOOT_FLASH_MMC_DEV) " " \
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CONTROL_PARTITION "; then " \
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"setenv ardaddr -; " \
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"if bcb test command = bootonce-bootloader; then " \
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"echo BCB: Bootloader boot...; " \
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"echo Android: Bootloader boot...; " \
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"bcb clear command; bcb store; " \
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FASTBOOT_CMD \
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"exit; " \
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"elif bcb test command = boot-recovery; then " \
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"echo BCB: Recovery boot...; " \
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"echo Warning: recovery is not implemented; " \
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"echo Performing normal boot for now...; " \
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"bcb clear command; bcb store; " \
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"run emmc_android_normal_boot; " \
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"echo Android: Recovery boot...; " \
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"setenv ardaddr $loadaddr;" \
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"setenv apart recovery; " \
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"else " \
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"echo BCB: Normal boot requested...; " \
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"run emmc_android_normal_boot; " \
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"echo Android: Normal boot...; " \
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"setenv ardaddr $loadaddr; " \
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"setenv apart boot${slot_suffix}; " \
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"fi; " \
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"else " \
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"echo Warning: BCB is corrupted or does not exist; " \
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"echo Performing normal boot...; " \
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"run emmc_android_normal_boot; " \
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"fi;\0" \
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"emmc_android_normal_boot=" \
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"echo Trying to boot Android from eMMC ...; " \
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"run update_to_fit; " \
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"echo Android: Normal boot...; " \
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"fi; " \
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"setenv eval_bootargs setenv bootargs $bootargs; " \
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"run eval_bootargs; " \
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"setenv mmcdev 1; " \
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"setenv machid fe6; " \
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"mmc dev $mmcdev; " \
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"mmc rescan; " \
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AVB_VERIFY_CHECK \
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AB_SELECT \
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"if part start mmc ${mmcdev} boot${slot_suffix} boot_start; " \
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"then " \
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"part size mmc ${mmcdev} boot${slot_suffix} " \
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"boot_size; " \
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"mmc read ${loadaddr} ${boot_start} ${boot_size}; " \
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"bootm ${loadaddr}#${fdtfile}; " \
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AB_SELECT_ARGS \
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"if part start mmc $mmcdev $apart boot_start; then " \
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"part size mmc $mmcdev $apart boot_size; " \
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"mmc read $loadaddr $boot_start $boot_size; " \
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"abootimg get dtb --index=0 dtb_start dtb_size; " \
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"cp.b $dtb_start $fdtaddr $dtb_size; " \
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"fdt addr $fdtaddr; " \
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"bootm $loadaddr $ardaddr $fdtaddr; " \
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"else " \
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"echo boot${slot_suffix} partition not found; " \
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"echo $apart partition not found; " \
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"exit; " \
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"fi;\0"
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#ifdef CONFIG_OMAP54XX
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