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ppc440: Avoid reporting error when reading non-existent RAM slot

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When reading base register of RAM slot with no RAM we should not try
to calculate register value because that will result printing an error
due to invalid RAM size. Just return 0 without the error in this case.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
BALATON Zoltan 2019-01-09 23:37:33 +01:00 committed by David Gibson
parent 52b73c09bf
commit 4f10ed277d
1 changed files with 4 additions and 2 deletions
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6
hw/ppc/ppc440_uc.c
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@ -613,8 +613,10 @@ static uint32_t dcr_read_sdram(void *opaque, int dcrn)
case SDRAM_R1BAS:
case SDRAM_R2BAS:
case SDRAM_R3BAS:
ret = sdram_bcr(sdram->ram_bases[dcrn - SDRAM_R0BAS],
sdram->ram_sizes[dcrn - SDRAM_R0BAS]);
if (sdram->ram_sizes[dcrn - SDRAM_R0BAS]) {
ret = sdram_bcr(sdram->ram_bases[dcrn - SDRAM_R0BAS],
sdram->ram_sizes[dcrn - SDRAM_R0BAS]);
}
break;
case SDRAM_CONF1HB:
case SDRAM_CONF1LL: