Hi Frieder,
On Thu, 30 Sept 2021 at 10:20, Frieder Schrempf frieder@fris.de wrote:
From: Frieder Schrempf frieder.schrempf@kontron.de
Currently 'sf update' supports only offsets that are aligned to the erase block size of the serial flash. Unaligned offsets result in something like:
=> sf update ${kernel_addr_r} 0x400 ${filesize} device 0 offset 0x400, size 0x11f758 SPI flash failed in erase step
<insert motivation for patch here>
In order to support unaligned updates, we simply read the first full block and check only the requested part of the block for changes. If necessary, the block is erased, the first (unchanged) part of the block is written back together with the second part of the block (updated data).
Signed-off-by: Frieder Schrempf frieder.schrempf@kontron.de
cmd/sf.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-)
Regards, Simon