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ast2400: add a memory controller device model

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The uboot in the previous release of the SDK was using a hardcoded
value for memory size. This is not true anymore, the value is now
retrieved from the memory controller.

Below is a model for this device, only supporting unlock and
configuration. Without it, we endup running a guest with 64MB, which
is a bit low nowdays. It uses a 'silicon-rev' property and ram_size to
build a default value. Some bits should be linked to SCU strapping
registers but it seems a bit complex to add for the current need.

The model is ready for the AST2500 SOC.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cédric Le Goater 2016-09-06 19:52:17 +01:00 • committed by Peter Maydell
parent 2926375cff
commit c2da8a8b90
5 changed files with 312 additions and 1 deletions
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2
include/hw/arm/ast2400.h
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@ -15,6 +15,7 @@
#include "hw/arm/arm.h"
#include "hw/intc/aspeed_vic.h"
#include "hw/misc/aspeed_scu.h"
#include "hw/misc/aspeed_sdmc.h"
#include "hw/timer/aspeed_timer.h"
#include "hw/i2c/aspeed_i2c.h"
#include "hw/ssi/aspeed_smc.h"
@ -32,6 +33,7 @@ typedef struct AST2400State {
AspeedSCUState scu;
AspeedSMCState smc;
AspeedSMCState spi;
AspeedSDMCState sdmc;
} AST2400State;
#define TYPE_AST2400 "ast2400"