- add support for 'fastboot flash' command for eMMC devices
Signed-off-by: Steve Rae <s...@broadcom.com>
---
I suspect that the "sparse image" handling (ie. the "while (remaining_chunks)"
loop)
has been implemented elsewhere -- I need help finding the original code to
determine
any licensing issues....
Thanks, Steve
common/Makefile | 5 ++
common/fb_mmc.c | 144 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
include/fb_mmc.h | 8 ++++
3 files changed, 157 insertions(+)
create mode 100644 common/fb_mmc.c
create mode 100644 include/fb_mmc.h
diff --git a/common/Makefile b/common/Makefile
index f6cd980..c825c2c 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -264,4 +264,9 @@ obj-$(CONFIG_FIT_SIGNATURE) += image-sig.o
obj-y += memsize.o
obj-y += stdio.o
+# This option is not just y/n - it can have a numeric value
+ifdef CONFIG_FASTBOOT_FLASH_MMC_DEV
+obj-y += fb_mmc.o
+endif
+
CFLAGS_env_embedded.o := -Wa,--no-warn -DENV_CRC=$(shell tools/envcrc
2>/dev/null)
diff --git a/common/fb_mmc.c b/common/fb_mmc.c
new file mode 100644
index 0000000..de6a4c7
--- /dev/null
+++ b/common/fb_mmc.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright TODO
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fb_mmc.h>
+#include <mmc.h>
+#include <sparse_format.h>
+
+void fb_mmc_flash_write(const char *cmd, void *download_buffer,
+ unsigned int download_bytes, char *response)
+{
+ int ret;
+ block_dev_desc_t *mmc_dev;
+ disk_partition_t info;
+ lbaint_t blk;
+ lbaint_t blkcnt;
+ ulong blks;
+ sparse_header_t *s_header = (sparse_header_t *)download_buffer;
+ chunk_header_t *c_header;
+ void *buffer;
+ uint32_t blk_sz;
+ uint32_t remaining_chunks;
+ uint32_t bytes_written = 0;
+
+ mmc_dev = mmc_get_dev(CONFIG_FASTBOOT_FLASH_MMC_DEV);
+ if (!mmc_dev || mmc_dev->type == DEV_TYPE_UNKNOWN) {
+ printf("%s: invalid mmc device\n", __func__);
+ strcpy(response, "FAILinvalid mmc device");
+ return;
+ }
+
+ ret = get_partition_info_efi_by_name(mmc_dev, cmd, &info);
+ if (ret) {
+ printf("%s: cannot find partition: '%s'\n", __func__, cmd);
+ strcpy(response, "FAILcannot find partition");
+ return;
+ }
+
+ if ((le32_to_cpu(s_header->magic) == SPARSE_HEADER_MAGIC) &&
+ (le16_to_cpu(s_header->major_version) == 1)) {
+ /* sparse image */
+
+ blk_sz = le32_to_cpu(s_header->blk_sz);
+
+ /* verify s_header->blk_sz is exact multiple of info.blksz */
+ if (blk_sz != (blk_sz & ~(info.blksz - 1))) {
+ printf("%s: Sparse image block size issue [%u]\n",
+ __func__, blk_sz);
+ strcpy(response, "FAILsparse image block size issue");
+ return;
+ }
+
+ if ((le32_to_cpu(s_header->total_blks) * blk_sz) >
+ (info.size * info.blksz)) {
+ printf("%s: Sparse image is too large for the
partition\n",
+ __func__);
+ strcpy(response, "FAILsparse image is too large");
+ return;
+ }
+
+ printf("Flashing Sparse Image\n");
+
+ blk = info.start;
+ remaining_chunks = le32_to_cpu(s_header->total_chunks);
+ c_header = (chunk_header_t *)(download_buffer +
+ le16_to_cpu(s_header->file_hdr_sz));
+ while (remaining_chunks) {
+ switch (le16_to_cpu(c_header->chunk_type)) {
+ case CHUNK_TYPE_RAW:
+ blkcnt =
+ (le32_to_cpu(c_header->chunk_sz) * blk_sz) /
+ info.blksz;
+ buffer =
+ (void *)c_header +
+ le16_to_cpu(s_header->chunk_hdr_sz);
+
+ blks = mmc_dev->block_write(mmc_dev->dev, blk,
+ blkcnt, buffer);
+ if (blks != blkcnt) {
+ printf("Write failed %lu\n", blks);
+ strcpy(response,
+ "FAILmmc write failure");
+ return;
+ }
+
+ bytes_written += blkcnt * info.blksz;
+ break;
+
+ case CHUNK_TYPE_FILL:
+ case CHUNK_TYPE_DONT_CARE:
+ case CHUNK_TYPE_CRC32:
+ /* do nothing */
+ break;
+
+ default:
+ /* error */
+ printf("Unknown chunk type\n");
+ strcpy(response,
+ "FAILunknown chunk type in sparse
image");
+ return;
+ }
+
+ blk += (le32_to_cpu(c_header->chunk_sz) * blk_sz) /
+ info.blksz;
+ c_header = (chunk_header_t *)((void *)c_header +
+ le32_to_cpu(c_header->total_sz));
+ remaining_chunks--;
+ }
+
+ printf("........ wrote %u bytes to '%s'\n", bytes_written, cmd);
+ } else {
+ /* raw image */
+
+ /* determine number of blocks to write */
+ blkcnt =
+ ((download_bytes + (info.blksz - 1)) & ~(info.blksz - 1));
+ blkcnt = blkcnt / info.blksz;
+
+ if (blkcnt > info.size) {
+ printf("%s: too large for partition: '%s'\n",
+ __func__, cmd);
+ strcpy(response, "FAILtoo large for partition");
+ return;
+ }
+
+ printf("Flashing Raw Image\n");
+
+ blks = mmc_dev->block_write(mmc_dev->dev, info.start, blkcnt,
+ download_buffer);
+ if (blks != blkcnt) {
+ printf("%s: failed writing to mmc device %d\n",
+ __func__, mmc_dev->dev);
+ strcpy(response, "FAILfailed writing to mmc device");
+ return;
+ }
+
+ printf("........ wrote %lu bytes to '%s'\n",
+ blkcnt * info.blksz, cmd);
+ }
+ strcpy(response, "OKAY");
+}
diff --git a/include/fb_mmc.h b/include/fb_mmc.h
new file mode 100644
index 0000000..1ad1d13
--- /dev/null
+++ b/include/fb_mmc.h
@@ -0,0 +1,8 @@
+/*
+ * Copyright 2014 Broadcom Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+void fb_mmc_flash_write(const char *cmd, void *download_buffer,
+ unsigned int download_bytes, char *response);
--
1.8.5
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