Implement A/B slot selection using the U-Boot ab_select command.
Keep support for non A/B.
Not: We need to redefine the recovery partition label, as RecoveryOS is included in the boot image for A/B systems [1]
[1] https://source.android.com/devices/tech/ota/ab/ab_implement#recovery Signed-off-by: Guillaume La Roque glaroque@baylibre.com Signed-off-by: Mattijs Korpershoek mkorpershoek@baylibre.com --- include/configs/meson64_android.h | 55 ++++++++++++++++++++++++++----- 1 file changed, 47 insertions(+), 8 deletions(-)
diff --git a/include/configs/meson64_android.h b/include/configs/meson64_android.h index 48a23b6e41..83fa25bfb1 100644 --- a/include/configs/meson64_android.h +++ b/include/configs/meson64_android.h @@ -25,9 +25,6 @@ #define CONTROL_PARTITION "misc" #endif
-#ifndef RECOVERY_PARTITION -#define RECOVERY_PARTITION "recovery" - #if defined(CONFIG_CMD_AVB) #define AVB_VERIFY_CHECK \ "if test "${force_avb}" -eq 1; then " \ @@ -42,12 +39,48 @@ "echo Running without AVB...; "\ "fi;"
-#define AVB_VERIFY_CMD "avb_verify=avb init ${mmcdev}; avb verify;\0" +#define AVB_VERIFY_CMD "avb_verify=avb init ${mmcdev}; avb verify $slot_suffix;\0" #else #define AVB_VERIFY_CHECK "" #define AVB_VERIFY_CMD "" #endif
+#if defined(CONFIG_CMD_AB_SELECT) +#define ANDROIDBOOT_GET_CURRENT_SLOT_CMD "get_current_slot=" \ + "if part number mmc ${mmcdev} " CONTROL_PARTITION " control_part_number; " \ + "then " \ + "echo " CONTROL_PARTITION \ + " partition number:${control_part_number};" \ + "ab_select current_slot mmc ${mmcdev}:${control_part_number};" \ + "else " \ + "echo " CONTROL_PARTITION " partition not found;" \ + "fi;\0" + +#define AB_SELECT_SLOT \ + "run get_current_slot; " \ + "if test -e "${current_slot}"; " \ + "then " \ + "setenv slot_suffix _${current_slot}; " \ + "else " \ + "echo current_slot not found;" \ + "exit;" \ + "fi;" + +#define AB_SELECT_ARGS \ + "setenv bootargs_ab androidboot.slot_suffix=${slot_suffix}; " \ + "echo A/B cmdline addition: ${bootargs_ab};" \ + "setenv bootargs ${bootargs} ${bootargs_ab};" + +#define AB_BOOTARGS " androidboot.force_normal_boot=1" +#define RECOVERY_PARTITION "boot" +#else +#define AB_SELECT_SLOT "" +#define AB_SELECT_ARGS " " +#define ANDROIDBOOT_GET_CURRENT_SLOT_CMD "" +#define AB_BOOTARGS " " +#define RECOVERY_PARTITION "recovery" +#endif + #define BOOTENV_DEV_FASTBOOT(devtypeu, devtypel, instance) \ "bootcmd_fastboot=" \ "setenv run_fastboot 0;" \ @@ -112,9 +145,11 @@ "echo Running Recovery...;" \ "mmc dev ${mmcdev};" \ "setenv bootargs "${bootargs} androidboot.serialno=${serial#}";" \ + AB_SELECT_SLOT \ + AB_SELECT_ARGS \ AVB_VERIFY_CHECK \ - "part start mmc ${mmcdev} " RECOVERY_PARTITION " boot_start;" \ - "part size mmc ${mmcdev} " RECOVERY_PARTITION " boot_size;" \ + "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 " \ "echo Running Android Recovery...;" \ "bootm ${loadaddr};" \ @@ -131,10 +166,13 @@ "echo Loading Android " BOOT_PARTITION " partition...;" \ "mmc dev ${mmcdev};" \ "setenv bootargs ${bootargs} androidboot.serialno=${serial#};" \ + AB_SELECT_SLOT \ + AB_SELECT_ARGS \ AVB_VERIFY_CHECK \ - "part start mmc ${mmcdev} " BOOT_PARTITION " boot_start;" \ - "part size mmc ${mmcdev} " BOOT_PARTITION " boot_size;" \ + "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} ${boot_size}; then " \ + "setenv bootargs "${bootargs} " AB_BOOTARGS "" ; " \ "echo Running Android...;" \ "bootm ${loadaddr};" \ "fi;" \ @@ -163,6 +201,7 @@ #define CONFIG_EXTRA_ENV_SETTINGS \ "partitions=" PARTS_DEFAULT "\0" \ "mmcdev=2\0" \ + ANDROIDBOOT_GET_CURRENT_SLOT_CMD \ AVB_VERIFY_CMD \ "force_avb=0\0" \ "gpio_recovery=88\0" \