diff options
| -rw-r--r-- | common/fb_mmc.c | 56 | ||||
| -rw-r--r-- | doc/README.android-fastboot | 5 | ||||
| -rw-r--r-- | drivers/usb/gadget/f_fastboot.c | 25 | ||||
| -rw-r--r-- | include/fb_mmc.h | 1 |
4 files changed, 84 insertions, 3 deletions
diff --git a/common/fb_mmc.c b/common/fb_mmc.c index 6ea3938..513b7ab 100644 --- a/common/fb_mmc.c +++ b/common/fb_mmc.c @@ -10,6 +10,7 @@ #include <part.h> #include <aboot.h> #include <sparse_format.h> +#include <mmc.h> #ifndef CONFIG_FASTBOOT_GPT_NAME #define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME @@ -110,3 +111,58 @@ void fb_mmc_flash_write(const char *cmd, void *download_buffer, write_raw_image(dev_desc, &info, cmd, download_buffer, download_bytes); } + +void fb_mmc_erase(const char *cmd, char *response) +{ + int ret; + block_dev_desc_t *dev_desc; + disk_partition_t info; + lbaint_t blks, blks_start, blks_size, grp_size; + struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV); + + if (mmc == NULL) { + error("invalid mmc device"); + fastboot_fail("invalid mmc device"); + return; + } + + /* initialize the response buffer */ + response_str = response; + + dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); + if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { + error("invalid mmc device"); + fastboot_fail("invalid mmc device"); + return; + } + + ret = get_partition_info_efi_by_name(dev_desc, cmd, &info); + if (ret) { + error("cannot find partition: '%s'", cmd); + fastboot_fail("cannot find partition"); + return; + } + + /* Align blocks to erase group size to avoid erasing other partitions */ + grp_size = mmc->erase_grp_size; + blks_start = (info.start + grp_size - 1) & ~(grp_size - 1); + if (info.size >= grp_size) + blks_size = (info.size - (blks_start - info.start)) & + (~(grp_size - 1)); + else + blks_size = 0; + + printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n", + blks_start, blks_start + blks_size); + + blks = dev_desc->block_erase(dev_desc->dev, blks_start, blks_size); + if (blks != blks_size) { + error("failed erasing from device %d", dev_desc->dev); + fastboot_fail("failed erasing from device"); + return; + } + + printf("........ erased " LBAFU " bytes from '%s'\n", + blks_size * info.blksz, cmd); + fastboot_okay(""); +} diff --git a/doc/README.android-fastboot b/doc/README.android-fastboot index 1677609..5526a43 100644 --- a/doc/README.android-fastboot +++ b/doc/README.android-fastboot @@ -6,9 +6,8 @@ Overview The protocol that is used over USB is described in README.android-fastboot-protocol in same directory. -The current implementation does not yet support the erase command or the -"oem format" command, and there is minimal support for the flash command; -it only supports eMMC devices. +The current implementation is a minimal support of the erase command,the +"oem format" command and flash command;it only supports eMMC devices. Client installation =================== diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c index f7d84bf..6138906 100644 --- a/drivers/usb/gadget/f_fastboot.c +++ b/drivers/usb/gadget/f_fastboot.c @@ -535,6 +535,28 @@ static void cb_oem(struct usb_ep *ep, struct usb_request *req) } } +#ifdef CONFIG_FASTBOOT_FLASH +static void cb_erase(struct usb_ep *ep, struct usb_request *req) +{ + char *cmd = req->buf; + char response[RESPONSE_LEN]; + + strsep(&cmd, ":"); + if (!cmd) { + error("missing partition name"); + fastboot_tx_write_str("FAILmissing partition name"); + return; + } + + strcpy(response, "FAILno flash device defined"); + +#ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV + fb_mmc_erase(cmd, response); +#endif + fastboot_tx_write_str(response); +} +#endif + struct cmd_dispatch_info { char *cmd; void (*cb)(struct usb_ep *ep, struct usb_request *req); @@ -561,6 +583,9 @@ static const struct cmd_dispatch_info cmd_dispatch_info[] = { { .cmd = "flash", .cb = cb_flash, + }, { + .cmd = "erase", + .cb = cb_erase, }, #endif { diff --git a/include/fb_mmc.h b/include/fb_mmc.h index 1ad1d13..402ba9b 100644 --- a/include/fb_mmc.h +++ b/include/fb_mmc.h @@ -6,3 +6,4 @@ void fb_mmc_flash_write(const char *cmd, void *download_buffer, unsigned int download_bytes, char *response); +void fb_mmc_erase(const char *cmd, char *response); |