[Qemu-devel] [PATCH v2 18/21] aspeed/smc: Calculate checksum on normal DMA

[Cédric Le Goater]

From: Christian Svensson <blue...@google.com>

This patch adds the missing checksum calculation on normal DMA transfer.
According to the datasheet this is how the SMC should behave.

Verified on AST1250 that the hardware matches the behaviour.

Signed-off-by: Christian Svensson <blue...@google.com>
Reviewed-by: Joel Stanley <j...@jms.id.au>
Signed-off-by: Cédric Le Goater <c...@kaod.org>
---
 hw/ssi/aspeed_smc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c
index 5c017f631ffd..9d0f17ce84ae 100644
--- a/hw/ssi/aspeed_smc.c
+++ b/hw/ssi/aspeed_smc.c
@@ -993,6 +993,7 @@ static void aspeed_smc_dma_rw(AspeedSMCState *s)
         s->regs[R_DMA_FLASH_ADDR] += 4;
         s->regs[R_DMA_DRAM_ADDR] += 4;
         s->regs[R_DMA_LEN] -= 4;
+        s->regs[R_DMA_CHECKSUM] += data;
     }
 }
 
-- 
2.21.0