diff options
| author | Stephen Warren <swarren@nvidia.com> | 2014-06-11 16:03:34 -0600 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2014-08-09 11:16:58 -0400 |
| commit | 7ac1b410ac9b66150170718a6f807ce52ffd8400 (patch) | |
| tree | 1823b2c0b7926e258b371f43630d00769be657ca /drivers/dfu/dfu.c | |
| parent | dd64827eb60de9f71b1a1d6aecf488104cdd7b96 (diff) | |
dfu: allow backend to specify a maximum buffer size
CONFIG_SYS_DFU_DATA_BUF_SIZE may be large to allow for FAT/ext layouts
to transfer large files. However, this means that individual write
operations will take a long time. Allow backends to specify a maximum
buffer size, so that each write operation is limited to a smaller data
block. This prevents the DFU protocol from timing out when e.g. writing
to SPI flash. I would guess that NAND might benefit from setting this
value too, but I can't test that.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'drivers/dfu/dfu.c')
| -rw-r--r-- | drivers/dfu/dfu.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index 26d3b44e40..b8d382d9b5 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -82,7 +82,7 @@ unsigned long dfu_get_buf_size(void) return dfu_buf_size; } -unsigned char *dfu_get_buf(void) +unsigned char *dfu_get_buf(struct dfu_entity *dfu) { char *s; @@ -92,6 +92,8 @@ unsigned char *dfu_get_buf(void) s = getenv("dfu_bufsiz"); dfu_buf_size = s ? (unsigned long)simple_strtol(s, NULL, 16) : CONFIG_SYS_DFU_DATA_BUF_SIZE; + if (dfu->max_buf_size && dfu_buf_size > dfu->max_buf_size) + dfu_buf_size = dfu->max_buf_size; dfu_buf = memalign(CONFIG_SYS_CACHELINE_SIZE, dfu_buf_size); if (dfu_buf == NULL) @@ -194,10 +196,10 @@ int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) dfu->offset = 0; dfu->bad_skip = 0; dfu->i_blk_seq_num = 0; - dfu->i_buf_start = dfu_get_buf(); + dfu->i_buf_start = dfu_get_buf(dfu); if (dfu->i_buf_start == NULL) return -ENOMEM; - dfu->i_buf_end = dfu_get_buf() + dfu_buf_size; + dfu->i_buf_end = dfu_get_buf(dfu) + dfu_buf_size; dfu->i_buf = dfu->i_buf_start; dfu->inited = 1; @@ -318,7 +320,7 @@ int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) __func__, dfu->name, buf, size, blk_seq_num, dfu->i_buf); if (!dfu->inited) { - dfu->i_buf_start = dfu_get_buf(); + dfu->i_buf_start = dfu_get_buf(dfu); if (dfu->i_buf_start == NULL) return -ENOMEM; @@ -342,7 +344,7 @@ int dfu_read(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) dfu->i_blk_seq_num = 0; dfu->crc = 0; dfu->offset = 0; - dfu->i_buf_end = dfu_get_buf() + dfu_buf_size; + dfu->i_buf_end = dfu_get_buf(dfu) + dfu_buf_size; dfu->i_buf = dfu->i_buf_start; dfu->b_left = 0; @@ -398,6 +400,7 @@ static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt, strcpy(dfu->name, st); dfu->alt = alt; + dfu->max_buf_size = 0; /* Specific for mmc device */ if (strcmp(interface, "mmc") == 0) { |