Hi Fabio,
From: Fabio Estevam fabio.estevam@freescale.com
The dfu_alt_info_spl variable allows passing a starting point for the binary to be flashed in the SPI NOR.
For example, if we have 'dfu_alt_info_spl=spl raw 0x400', this means that we want to flash the binary starting at address 0x400.
In order to do so we need to erase the entire sector and write to the the subsequent SPI NOR sectors taking such start address into account for the address calculations.
Tested by succesfully writing SPL binary into 0x400 offset and the u-boot.img at offset 64 kiB of a SPL NOR.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com
drivers/dfu/dfu_sf.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/dfu/dfu_sf.c b/drivers/dfu/dfu_sf.c index 448d95d..844da1f 100644 --- a/drivers/dfu/dfu_sf.c +++ b/drivers/dfu/dfu_sf.c @@ -23,17 +23,25 @@ static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf, return spi_flash_read(dfu->data.sf.dev, offset, *len, buf); }
+static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset) +{
- return ((start + offset) / dfu->data.sf.dev->sector_size) *
dfu->data.sf.dev->sector_size;+}
static int dfu_write_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf, long *len) { int ret;
- ret = spi_flash_erase(dfu->data.sf.dev, offset,
- ret = spi_flash_erase(dfu->data.sf.dev,
find_sector(dfu, dfu->data.sf.start,offset), dfu->data.sf.dev->sector_size); if (ret) return ret;
- ret = spi_flash_write(dfu->data.sf.dev, offset, *len, buf);
- ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start +
offset,
*len, buf);
Acked-by: Lukasz Majewski l.majewski@samsung.com
Applied to u-boot-dfu.
Thanks for your patch.