From 769c6cbbb53074025c3af53d8df5571ae18d74c3 Mon Sep 17 00:00:00 2001 From: Dmitrii Merkurev Date: Fri, 21 Nov 2025 11:53:33 +0100 Subject: [PATCH] fastboot: integrate block flashing back-end 1. Get partition info/size 2. Erase partition 3. Flash partition 4. BCB Make FASTBOOT_FLASH also depend on BLK, but make sure it doesn't affect SUNXI and ROCKCHIP platforms since they default to y already. Make it only default on SUNXI when MMC or NAND is enabled, so it doesn't break the CHIP & Nintendo boards, and for ROCKCHIP when MMC is enabled. Signed-off-by: Dmitrii Merkurev Reviewed-by: Mattijs Korpershoek Tested-by: Mattijs Korpershoek Signed-off-by: Neil Armstrong Link: https://lore.kernel.org/r/20251121-topic-fastboot-blk-v7-3-9589d902fc91@linaro.org Signed-off-by: Mattijs Korpershoek --- drivers/fastboot/Kconfig | 32 ++++++++++++++++++++++++++++++-- drivers/fastboot/Makefile | 1 + drivers/fastboot/fb_command.c | 8 ++++++++ drivers/fastboot/fb_common.c | 22 ++++++++++++++++++---- drivers/fastboot/fb_getvar.c | 8 +++++++- 5 files changed, 64 insertions(+), 7 deletions(-) diff --git a/drivers/fastboot/Kconfig b/drivers/fastboot/Kconfig index 843171902ae..576c3ef8a45 100644 --- a/drivers/fastboot/Kconfig +++ b/drivers/fastboot/Kconfig @@ -90,8 +90,9 @@ config FASTBOOT_USB_DEV config FASTBOOT_FLASH bool "Enable FASTBOOT FLASH command" - default y if ARCH_SUNXI || ARCH_ROCKCHIP - depends on MMC || (MTD_RAW_NAND && CMD_MTDPARTS) || DM_SPI_FLASH + default y if ARCH_SUNXI && ( MMC || MTD_RAW_NAND ) + default y if ARCH_ROCKCHIP && MMC + depends on MMC || (MTD_RAW_NAND && CMD_MTDPARTS) || DM_SPI_FLASH || BLK select IMAGE_SPARSE help The fastboot protocol includes a "flash" command for writing @@ -123,6 +124,10 @@ config FASTBOOT_FLASH_SPI bool "FASTBOOT on SPI flash" depends on DM_SPI_FLASH +config FASTBOOT_FLASH_BLOCK + bool "FASTBOOT on block device" + depends on BLK + endchoice config FASTBOOT_FLASH_MMC_DEV @@ -197,6 +202,29 @@ config FASTBOOT_MMC_USER_NAME defined here. The default target name for erasing EMMC_USER is "mmc0". +config FASTBOOT_FLASH_BLOCK_INTERFACE_NAME + string "Define FASTBOOT block interface name" + depends on FASTBOOT_FLASH_BLOCK + help + The fastboot "flash" and "erase" commands support operations + on any Block device, this should specify the block device name + like ide, scsi, usb, sata, nvme, virtio, blkmap, mtd... + The mmc block device type can be used but most of the features + available in the FASTBOOT_MMC will be missing. + Consider using FASTBOOT_MMC on a MMC block device until all + features are migrated. + +config FASTBOOT_FLASH_BLOCK_DEVICE_ID + int "Define FASTBOOT block device identifier" + depends on FASTBOOT_FLASH_BLOCK + default 0 + help + The fastboot "flash" and "erase" commands support operations + on any Block device, this should specify the block device + identifier on the system, as a number. + Device identifiers are numbered starting from 0 and the most + common case is to use the first controller on the system. + config FASTBOOT_GPT_NAME string "Target name for updating GPT" depends on FASTBOOT_FLASH_MMC && EFI_PARTITION diff --git a/drivers/fastboot/Makefile b/drivers/fastboot/Makefile index e4c97d45997..a341af076d1 100644 --- a/drivers/fastboot/Makefile +++ b/drivers/fastboot/Makefile @@ -3,6 +3,7 @@ obj-y += fb_common.o obj-y += fb_getvar.o obj-y += fb_command.o +obj-$(CONFIG_FASTBOOT_FLASH_BLOCK) += fb_block.o # MMC reuses block implementation obj-$(CONFIG_FASTBOOT_FLASH_MMC) += fb_block.o fb_mmc.o obj-$(CONFIG_FASTBOOT_FLASH_NAND) += fb_nand.o diff --git a/drivers/fastboot/fb_command.c b/drivers/fastboot/fb_command.c index 791088bc094..18d86988f4c 100644 --- a/drivers/fastboot/fb_command.c +++ b/drivers/fastboot/fb_command.c @@ -8,6 +8,7 @@ #include #include #include +#include #include #include #include @@ -338,6 +339,10 @@ void fastboot_data_complete(char *response) */ static void __maybe_unused flash(char *cmd_parameter, char *response) { + if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_BLOCK)) + fastboot_block_flash_write(cmd_parameter, fastboot_buf_addr, + image_size, response); + if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_MMC)) fastboot_mmc_flash_write(cmd_parameter, fastboot_buf_addr, image_size, response); @@ -362,6 +367,9 @@ static void __maybe_unused flash(char *cmd_parameter, char *response) */ static void __maybe_unused erase(char *cmd_parameter, char *response) { + if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_BLOCK)) + fastboot_block_erase(cmd_parameter, response); + if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_MMC)) fastboot_mmc_erase(cmd_parameter, response); diff --git a/drivers/fastboot/fb_common.c b/drivers/fastboot/fb_common.c index 68f92c4b887..dac5528f809 100644 --- a/drivers/fastboot/fb_common.c +++ b/drivers/fastboot/fb_common.c @@ -97,16 +97,24 @@ int __weak fastboot_set_reboot_flag(enum fastboot_reboot_reason reason) [FASTBOOT_REBOOT_REASON_FASTBOOTD] = "boot-fastboot", [FASTBOOT_REBOOT_REASON_RECOVERY] = "boot-recovery" }; - const int mmc_dev = config_opt_enabled(CONFIG_FASTBOOT_FLASH_MMC, - CONFIG_FASTBOOT_FLASH_MMC_DEV, -1); - if (!IS_ENABLED(CONFIG_FASTBOOT_FLASH_MMC)) + int device = config_opt_enabled(CONFIG_FASTBOOT_FLASH_BLOCK, + CONFIG_FASTBOOT_FLASH_BLOCK_DEVICE_ID, -1); + if (device == -1) { + device = config_opt_enabled(CONFIG_FASTBOOT_FLASH_MMC, + CONFIG_FASTBOOT_FLASH_MMC_DEV, -1); + } + const char *bcb_iface = config_opt_enabled(CONFIG_FASTBOOT_FLASH_BLOCK, + CONFIG_FASTBOOT_FLASH_BLOCK_INTERFACE_NAME, + "mmc"); + + if (device == -1) return -EINVAL; if (reason >= FASTBOOT_REBOOT_REASONS_COUNT) return -EINVAL; - ret = bcb_find_partition_and_load("mmc", mmc_dev, "misc"); + ret = bcb_find_partition_and_load(bcb_iface, device, "misc"); if (ret) goto out; @@ -226,8 +234,14 @@ void fastboot_set_progress_callback(void (*progress)(const char *msg)) */ void fastboot_init(void *buf_addr, u32 buf_size) { +#if IS_ENABLED(CONFIG_FASTBOOT_FLASH_BLOCK) + if (!strcmp(CONFIG_FASTBOOT_FLASH_BLOCK_INTERFACE_NAME, "mmc")) + printf("Warning: the fastboot block backend features are limited, consider using the MMC backend\n"); +#endif + fastboot_buf_addr = buf_addr ? buf_addr : (void *)CONFIG_FASTBOOT_BUF_ADDR; fastboot_buf_size = buf_size ? buf_size : CONFIG_FASTBOOT_BUF_SIZE; fastboot_set_progress_callback(NULL); + } diff --git a/drivers/fastboot/fb_getvar.c b/drivers/fastboot/fb_getvar.c index 6775ea397ab..e8aa0e09aa6 100644 --- a/drivers/fastboot/fb_getvar.c +++ b/drivers/fastboot/fb_getvar.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include @@ -115,7 +116,12 @@ static int getvar_get_part_info(const char *part_name, char *response, struct disk_partition disk_part; struct part_info *part_info; - if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_MMC)) { + if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_BLOCK)) { + r = fastboot_block_get_part_info(part_name, &dev_desc, &disk_part, + response); + if (r >= 0 && size) + *size = disk_part.size * disk_part.blksz; + } else if (IS_ENABLED(CONFIG_FASTBOOT_FLASH_MMC)) { r = fastboot_mmc_get_part_info(part_name, &dev_desc, &disk_part, response); if (r >= 0 && size) -- 2.47.3