Default implementation of fastboot_set_reboot_flag function that depends on "bcb" commands could be used in general case if there are no need to make any platform-specific implementation, otherwise it could be disabled via Kconfig option FASTBOOT_USE_BCB_SET_REBOOT_FLAG.
Please note that FASTBOOT_USE_BCB_SET_REBOOT_FLAG is mutually exclusive with some platforms which already have their own implementation of this function.
Signed-off-by: Roman Kovalivskyi roman.kovalivskyi@globallogic.com --- drivers/fastboot/Kconfig | 9 +++++++ drivers/fastboot/Makefile | 1 + drivers/fastboot/fb_bcb_impl.c | 48 ++++++++++++++++++++++++++++++++++ 3 files changed, 58 insertions(+) create mode 100644 drivers/fastboot/fb_bcb_impl.c
diff --git a/drivers/fastboot/Kconfig b/drivers/fastboot/Kconfig index d4436dfc9173..bcb43bc5d556 100644 --- a/drivers/fastboot/Kconfig +++ b/drivers/fastboot/Kconfig @@ -165,6 +165,15 @@ config FASTBOOT_CMD_OEM_FORMAT relies on the env variable partitions to contain the list of partitions as required by the gpt command.
+config FASTBOOT_USE_BCB_SET_REBOOT_FLAG + bool "Enable default fastboot_set_reboot_flag implementation" + depends on CMD_BCB && !ARCH_MESON && !ARCH_ROCKCHIP && !TARGET_KC1 && \ + !TARGET_SNIPER && !TARGET_AM57XX_EVM && !TARGET_DRA7XX_EVM + default 1 + help + Add default implementation of fastboot_set_reboot_flag that uses + "bcb" commands. + endif # FASTBOOT
endmenu diff --git a/drivers/fastboot/Makefile b/drivers/fastboot/Makefile index 048af5aa8234..2b2c390fe4de 100644 --- a/drivers/fastboot/Makefile +++ b/drivers/fastboot/Makefile @@ -5,3 +5,4 @@ obj-y += fb_getvar.o obj-y += fb_command.o obj-$(CONFIG_FASTBOOT_FLASH_MMC) += fb_mmc.o obj-$(CONFIG_FASTBOOT_FLASH_NAND) += fb_nand.o +obj-$(CONFIG_FASTBOOT_USE_BCB_SET_REBOOT_FLAG) += fb_bcb_impl.o diff --git a/drivers/fastboot/fb_bcb_impl.c b/drivers/fastboot/fb_bcb_impl.c new file mode 100644 index 000000000000..a5ae94e2e357 --- /dev/null +++ b/drivers/fastboot/fb_bcb_impl.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 GlobalLogic. + * Roman Kovalivskyi roman.kovalivskyi@globallogic.com + */ + +#include <common.h> +#include <fastboot.h> + +/** + * fastboot_set_reboot_flag() - Set flag to indicate reboot-bootloader + * + * Set flag which indicates that we should reboot into the bootloader + * following the reboot that fastboot executes after this function. + * + * This function should be overridden in your board file with one + * which sets whatever flag your board specific Android bootloader flow + * requires in order to re-enter the bootloader. + */ +int fastboot_set_reboot_flag(enum fastboot_reboot_reason reason) +{ + static const char * const boot_cmds[] = { + "bootonce-bootloader", + "boot-fastboot", + "boot-recovery" + }; + + char cmd[32]; + + if (reason >= FASTBOOT_REBOOT_REASONS_COUNT) + return -EINVAL; + + snprintf(cmd, sizeof(cmd), "bcb load %d misc", + CONFIG_FASTBOOT_FLASH_MMC_DEV); + + if (run_command(cmd, 0)) + return -ENODEV; + + snprintf(cmd, sizeof(cmd), "bcb set command %s", boot_cmds[reason]); + + if (run_command(cmd, 0)) + return -ENOEXEC; + + if (run_command("bcb store", 0)) + return -EIO; + + return 0; +}