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authorƁukasz Majewski <l.majewski@samsung.com>2014-02-21 08:23:00 +0100
committerPantelis Antoniou <panto@antoniou-consulting.com>2014-03-24 12:59:54 +0200
commiteea4e6fe82fef9975e0153644935b89882890450 (patch)
tree150e7192f98baba8ee9b4b7fca86f022bbf5383a /drivers
parent93bfd6167713a5cc1a78bcf60fa63f990fd3f4b3 (diff)
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dfu: mmc: Replace calls to u-boot commands with native mmc API
For some time we have been using the run_command() with properly crafted string. Such approach turned to be unreliable and error prone. Switch to "native" mmc subsystem API would allow better type checking and shall improve speed. Also, it seems that this API is changing less often than u-boot commands. The approach similar to env operations on the eMMC has been reused. Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dfu/dfu_mmc.c31
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c
index 0816f46..651cfff 100644
--- a/drivers/dfu/dfu_mmc.c
+++ b/drivers/dfu/dfu_mmc.c
@@ -12,6 +12,7 @@
#include <errno.h>
#include <div64.h>
#include <dfu.h>
+#include <mmc.h>
static unsigned char __aligned(CONFIG_SYS_CACHELINE_SIZE)
dfu_file_buf[CONFIG_SYS_DFU_MAX_FILE_SIZE];
@@ -20,8 +21,8 @@ static long dfu_file_buf_len;
static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu,
u64 offset, void *buf, long *len)
{
- char cmd_buf[DFU_CMD_BUF_SIZE];
- u32 blk_start, blk_count;
+ struct mmc *mmc = find_mmc_device(dfu->dev_num);
+ u32 blk_start, blk_count, n = 0;
/*
* We must ensure that we work in lba_blk_size chunks, so ALIGN
@@ -38,12 +39,28 @@ static int mmc_block_op(enum dfu_op op, struct dfu_entity *dfu,
return -EINVAL;
}
- sprintf(cmd_buf, "mmc %s %p %x %x",
- op == DFU_OP_READ ? "read" : "write",
- buf, blk_start, blk_count);
+ debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__,
+ op == DFU_OP_READ ? "MMC READ" : "MMC WRITE", dfu->dev_num,
+ blk_start, blk_count, buf);
+ switch (op) {
+ case DFU_OP_READ:
+ n = mmc->block_dev.block_read(dfu->dev_num, blk_start,
+ blk_count, buf);
+ break;
+ case DFU_OP_WRITE:
+ n = mmc->block_dev.block_write(dfu->dev_num, blk_start,
+ blk_count, buf);
+ break;
+ default:
+ error("Operation not supported\n");
+ }
- debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf);
- return run_command(cmd_buf, 0);
+ if (n != blk_count) {
+ error("MMC operation failed");
+ return -EIO;
+ }
+
+ return 0;
}
static int mmc_file_buffer(struct dfu_entity *dfu, void *buf, long *len)