X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=common%2Ffb_mmc.c;h=0c48cf929f8fd568d4d06095ede231ab81a97a6a;hb=6e474eab446432e7480394ca3833c89a01dba078;hp=6ea3938d83f29467feb874c8156a200b4641b2a7;hpb=a2ee47d5f6d010e92e956a8fa9b62fe220d61bf6;p=u-boot

diff --git a/common/fb_mmc.c b/common/fb_mmc.c
index 6ea3938d83..0c48cf929f 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
@@ -22,16 +23,38 @@ static char *response_str;
 
 void fastboot_fail(const char *s)
 {
-	strncpy(response_str, "FAIL", 4);
+	strncpy(response_str, "FAIL\0", 5);
 	strncat(response_str, s, RESPONSE_LEN - 4 - 1);
 }
 
 void fastboot_okay(const char *s)
 {
-	strncpy(response_str, "OKAY", 4);
+	strncpy(response_str, "OKAY\0", 5);
 	strncat(response_str, s, RESPONSE_LEN - 4 - 1);
 }
 
+static int get_partition_info_efi_by_name_or_alias(block_dev_desc_t *dev_desc,
+		const char *name, disk_partition_t *info)
+{
+	int ret;
+
+	ret = get_partition_info_efi_by_name(dev_desc, name, info);
+	if (ret) {
+		/* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
+		char env_alias_name[25 + 32 + 1];
+		char *aliased_part_name;
+
+		/* check for alias */
+		strcpy(env_alias_name, "fastboot_partition_alias_");
+		strncat(env_alias_name, name, 32);
+		aliased_part_name = getenv(env_alias_name);
+		if (aliased_part_name != NULL)
+			ret = get_partition_info_efi_by_name(dev_desc,
+					aliased_part_name, info);
+	}
+	return ret;
+}
+
 static void write_raw_image(block_dev_desc_t *dev_desc, disk_partition_t *info,
 		const char *part_name, void *buffer,
 		unsigned int download_bytes)
@@ -97,7 +120,7 @@ void fb_mmc_flash_write(const char *cmd, void *download_buffer,
 		printf("........ success\n");
 		fastboot_okay("");
 		return;
-	} else if (get_partition_info_efi_by_name(dev_desc, cmd, &info)) {
+	} else if (get_partition_info_efi_by_name_or_alias(dev_desc, cmd, &info)) {
 		error("cannot find partition: '%s'\n", cmd);
 		fastboot_fail("cannot find partition");
 		return;
@@ -110,3 +133,58 @@ 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_or_alias(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("");
+}