Enable the Force Unit Access (FUA) bit in SCSI WRITE10 commands to ensure writes bypass the device's volatile cache and go directly to non-volatile storage. This provides write-through behavior without requiring explicit cache flushes after each write operation.
Remove the SYNC_CACHE command that was being issued after every scsi_write() call, as it is redundant when FUA is enabled and was causing system hangs during large sparse image flashing operations. Signed-off-by: Aswin Murugan <[email protected]> Signed-off-by: Balaji Selvanathan <[email protected]> --- drivers/scsi/scsi.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 8fe6b38a8c7..b755616bf3f 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -124,7 +124,7 @@ static void scsi_setup_write_ext(struct scsi_cmd *pccb, lbaint_t start, lbaint_t blocks) { pccb->cmd[0] = SCSI_WRITE10; - pccb->cmd[1] = 0; + pccb->cmd[1] = 0x08; /* Set FUA bit to bypass write cache */ pccb->cmd[2] = (unsigned char)(start >> 24) & 0xff; pccb->cmd[3] = (unsigned char)(start >> 16) & 0xff; pccb->cmd[4] = (unsigned char)(start >> 8) & 0xff; @@ -301,11 +301,6 @@ static ulong scsi_write(struct udevice *dev, lbaint_t blknr, lbaint_t blkcnt, buf_addr += pccb->datalen; } while (blks != 0); - /* Flush the SCSI cache so we don't lose data on board reset. */ - scsi_setup_sync_cache(pccb, 0, 0); - if (scsi_exec(bdev, pccb)) - scsi_print_error(pccb); - debug("%s: end startblk " LBAF ", blccnt " LBAF " buffer %lX\n", __func__, start, blocks, buf_addr); return blkcnt; -- 2.34.1
