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[Qemu-arm] [PATCH 19/19] aspeed/smc: Calculate checksum on normal DMA


From: Cédric Le Goater
Subject: [Qemu-arm] [PATCH 19/19] aspeed/smc: Calculate checksum on normal DMA
Date: Sat, 25 May 2019 17:12:41 +0200

From: Christian Svensson <address@hidden>

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 <address@hidden>
Signed-off-by: Cédric Le Goater <address@hidden>
---
 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 4c162912cf62..9afd0e920dfb 100644
--- a/hw/ssi/aspeed_smc.c
+++ b/hw/ssi/aspeed_smc.c
@@ -986,6 +986,7 @@ 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;
     }
 }
 
-- 
2.20.1




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