Hello,
On 9/26/21 09:59, Philippe Mathieu-Daudé wrote:
Hi,
On 9/25/21 19:07, Shitalkumar Gandhi via wrote:
Hi,
I am attaching a patch that will fix eMMC image booting on QEMU for
AST2600 machine, without this patch it will be stuck after SPL saying,
"booting from RAM".
Please review and merge, thanks.
Let me know in case of any concern.
Thanks for your patch.
Please look at how to submit patches here:
https://wiki.qemu.org/Contribute/SubmitAPatch#Submitting_your_Patches
This patch has been added to boot eMMC image for AST2600 machine on
QEMU.
Run quemu as follows:
./qemu-system-arm -m 1G -M ast2600-evb -nographic -drive
file=mmc-evb-ast2600.img,format=raw,if=sd,index=2
What is index=2?
Is this mmc-evb-ast2600.img image publicly available?
Tested: Booted AST2600 eMMC image on QEMU.
Suggested-by: <vent...@google.com>
Reviewed-by: Hao Wu <wuhao...@google.com>
Reviewed-by: Cédric Le Goater <c...@kaod.org>
Message-Id: <20210416162426.3217033-1-vent...@google.com>
Signed-off-by: Cédric Le Goater <c...@kaod.org>
I don't remember having reviewed or signed this patch.
---
hw/arm/aspeed.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index ba5f1dc5af..6a890adb83 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -148,7 +148,7 @@ struct AspeedMachineState {
SCU_AST2400_HW_STRAP_BOOT_MODE(AST2400_SPI_BOOT))
/* AST2600 evb hardware value */
-#define AST2600_EVB_HW_STRAP1 0x000000C0
+#define AST2600_EVB_HW_STRAP1 (0x000000C0 |
AST26500_HW_STRAP_BOOT_SRC_EMMC)
IIUC you are not implementing any eMMC code, simply faking the
controller can support eMMC, but the card is used in SD mode?
I think this is related to this issue :
https://github.com/openbmc/openbmc/issues/3818
I'm surprised your guest is happy and boot that. If so, then
what is the point of announcing eMMC is supported if not used?
It should work on the aspeed branches I maintain which include the
emmc support but this is not for upstream.
Some comments,
I don't think the AST2600 evb boots by default on emmc. I agree
it's nice to have for tests and there are other ways to modify
slightly the default behavior.
We could add a machine property to define the 'hw-strap1' register
but it's a bit difficult to remember the value.
A custom '-boot' value setting the 'hw-strap1' for the AST2600
machine seems a better alternative. We could merge such a change
even if emmc is not ready.
Thanks,
C.
