ast2400: add a memory controller device model
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>
diff --git a/hw/arm/ast2400.c b/hw/arm/ast2400.c
index 326fdb3..136bf64 100644
--- a/hw/arm/ast2400.c
+++ b/hw/arm/ast2400.c
@@ -27,6 +27,7 @@
#define AST2400_FMC_BASE 0X1E620000
#define AST2400_SPI_BASE 0X1E630000
#define AST2400_VIC_BASE 0x1E6C0000
+#define AST2400_SDMC_BASE 0x1E6E0000
#define AST2400_SCU_BASE 0x1E6E2000
#define AST2400_TIMER_BASE 0x1E782000
#define AST2400_I2C_BASE 0x1E78A000
@@ -97,6 +98,12 @@
object_initialize(&s->spi, sizeof(s->spi), "aspeed.smc.spi");
object_property_add_child(obj, "spi", OBJECT(&s->spi), NULL);
qdev_set_parent_bus(DEVICE(&s->spi), sysbus_get_default());
+
+ object_initialize(&s->sdmc, sizeof(s->sdmc), TYPE_ASPEED_SDMC);
+ object_property_add_child(obj, "sdmc", OBJECT(&s->sdmc), NULL);
+ qdev_set_parent_bus(DEVICE(&s->sdmc), sysbus_get_default());
+ qdev_prop_set_uint32(DEVICE(&s->sdmc), "silicon-rev",
+ AST2400_A0_SILICON_REV);
}
static void ast2400_realize(DeviceState *dev, Error **errp)
@@ -183,6 +190,14 @@
}
sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi), 0, AST2400_SPI_BASE);
sysbus_mmio_map(SYS_BUS_DEVICE(&s->spi), 1, AST2400_SPI_FLASH_BASE);
+
+ /* SDMC - SDRAM Memory Controller */
+ object_property_set_bool(OBJECT(&s->sdmc), true, "realized", &err);
+ if (err) {
+ error_propagate(errp, err);
+ return;
+ }
+ sysbus_mmio_map(SYS_BUS_DEVICE(&s->sdmc), 0, AST2400_SDMC_BASE);
}
static void ast2400_class_init(ObjectClass *oc, void *data)
