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configs: meson64_android: boot android via abootimg 

Since Android 10, we are required to use a "dtbo" partition which
includes the various device-tree overlays [1].
It's also possible to provide a "dtb" partition.

This is supported via the "abootimg" command.

On Yukawa, the assumption is that we have only a "dtbo" partition, which
includes all board dtbs and their dtbos [2]

[1] https://source.android.com/devices/architecture/dto/partitions
[2] https://android.googlesource.com/device/amlogic/yukawa/+/refs/heads/master/build/tasks/dtimages.mk#16
Signed-off-by: Guillaume La Roque <glaroque@baylibre.com>
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Guillaume La Roque 2021-08-05 17:17:25 +02:00 committed by Neil Armstrong
parent 7039cbd2f5
commit 72cefbafbf
1 changed files with 56 additions and 1 deletions
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57
include/configs/meson64_android.h
View File

@ -81,7 +81,59 @@
#define RECOVERY_PARTITION "recovery"
#endif
#if defined(CONFIG_CMD_ABOOTIMG)
/*
* Prepares complete device tree blob for current board (for Android boot).
*
* Boot image or recovery image should be loaded into $loadaddr prior to running
* these commands. The logic of these commnads is next:
*
* 1. Read correct DTB for current SoC/board from boot image in $loadaddr
* to $fdtaddr
* 2. Merge all needed DTBO for current board from 'dtbo' partition into read
* DTB
* 3. User should provide $fdtaddr as 3rd argument to 'bootm'
*/
#define PREPARE_FDT \
"echo Preparing FDT...; " \
"if test $board_name = sei510; then " \
"echo \" Reading DTB for sei510...\"; " \
"setenv dtb_index 0;" \
"elif test $board_name = sei610; then " \
"echo \" Reading DTB for sei610...\"; " \
"setenv dtb_index 1;" \
"else " \
"echo Error: Android boot is not supported for $board_name; " \
"exit; " \
"fi; " \
"abootimg get dtb --index=$dtb_index dtb_start dtb_size; " \
"cp.b $dtb_start $fdt_addr_r $dtb_size; " \
"fdt addr $fdt_addr_r 0x80000; " \
"if test $board_name = sei510; then " \
"echo \" Reading DTBO for sei510...\"; " \
"setenv dtbo_index 0;" \
"elif test $board_name = sei610; then " \
"echo \" Reading DTBO for sei610...\"; " \
"setenv dtbo_index 1;" \
"else " \
"echo Error: Android boot is not supported for $board_name; " \
"exit; " \
"fi; " \
"part start mmc ${mmcdev} dtbo${slot_suffix} p_dtbo_start; " \
"part size mmc ${mmcdev} dtbo${slot_suffix} p_dtbo_size; " \
"mmc read ${dtboaddr} ${p_dtbo_start} ${p_dtbo_size}; " \
"echo \" Applying DTBOs...\"; " \
"adtimg addr $dtboaddr; " \
"adtimg get dt --index=$dtbo_index dtbo0_addr; " \
"fdt apply $dtbo0_addr;" \
"setenv bootargs \"$bootargs androidboot.dtbo_idx=$dtbo_index \";"\
#define BOOT_CMD "bootm ${loadaddr} ${loadaddr} ${fdt_addr_r};"
#else
#define PREPARE_FDT " "
#define BOOT_CMD "bootm ${loadaddr};"
#endif
#define BOOTENV_DEV_FASTBOOT(devtypeu, devtypel, instance) \
"bootcmd_fastboot=" \
@ -153,6 +205,7 @@
"part start mmc ${mmcdev} " RECOVERY_PARTITION "${slot_suffix} boot_start;" \
"part size mmc ${mmcdev} " RECOVERY_PARTITION "${slot_suffix} boot_size;" \
"if mmc read ${loadaddr} ${boot_start} ${boot_size}; then " \
PREPARE_FDT \
"echo Running Android Recovery...;" \
BOOT_CMD \
"fi;" \
@ -174,6 +227,7 @@
"part start mmc ${mmcdev} " BOOT_PARTITION "${slot_suffix} boot_start;" \
"part size mmc ${mmcdev} " BOOT_PARTITION "${slot_suffix} boot_size;" \
"if mmc read ${loadaddr} ${boot_start} ${boot_size}; then " \
PREPARE_FDT \
"setenv bootargs \"${bootargs} " AB_BOOTARGS "\" ; " \
"echo Running Android...;" \
BOOT_CMD \
@ -212,7 +266,8 @@
"stdin=" STDIN_CFG "\0" \
"stdout=" STDOUT_CFG "\0" \
"stderr=" STDOUT_CFG "\0" \
"loadaddr=0x01000000\0" \
"dtboaddr=0x08200000\0" \
"loadaddr=0x01080000\0" \
"fdt_addr_r=0x01000000\0" \
"scriptaddr=0x08000000\0" \
"kernel_addr_r=0x01080000\0" \