diff options
authorPhilippe Mathieu-Daudé <f4bug@amsat.org>2019-01-07 15:23:47 +0000
committerPeter Maydell <peter.maydell@linaro.org>2019-01-07 15:23:47 +0000
commitead07aa4ef753f0facd19a7218402f7d19eff60a (patch)
parent0ec7e6779fc830e5b4e6a448d75317fafcf69477 (diff)
hw/arm/allwinner-a10: Add the 'A' SRAM and the SRAM controller
From the "A10 User Manual V1.20" p.29: "3.2. Memory Mapping" and: 7. System Control 7.1. Overview A10 embeds a high-speed SRAM which has been split into five segments. See detailed memory mapping in following table: Area Address Size (Bytes) A1 0x00000000-0x00003FFF 16K A2 0x00004000-0x00007FFF 16K A3 0x00008000-0x0000B3FF 13K A4 0x0000B400-0x0000BFFF 3K Since for emulation purpose we don't need the segmentations, we simply define the 'A' area as a single 48KB SRAM. We don't implement the following others areas: - 'B': 'Secure RAM' (64K), - 'C': Debug/ISP SRAM - 'D': USB SRAM (qemu) info mtree address-space: memory 0000000000000000-ffffffffffffffff (prio 0, i/o): system 0000000000000000-000000000000bfff (prio 0, ram): sram A 0000000001c00000-0000000001c00fff (prio -1000, i/o): a10-sram-ctrl 0000000001c0b000-0000000001c0bfff (prio 0, i/o): aw_emac 0000000001c18000-0000000001c18fff (prio 0, i/o): ahci 0000000001c18080-0000000001c180ff (prio 0, i/o): allwinner-ahci 0000000001c20400-0000000001c207ff (prio 0, i/o): allwinner-a10-pic 0000000001c20c00-0000000001c20fff (prio 0, i/o): allwinner-A10-timer 0000000001c28000-0000000001c2801f (prio 0, i/o): serial 0000000040000000-0000000047ffffff (prio 0, ram): cubieboard.ram Reported-by: Charlie Smurthwaite <charlie@atech.media> Tested-by: Charlie Smurthwaite <charlie@atech.media> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20190104142921.878-1-f4bug@amsat.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2 files changed, 7 insertions, 0 deletions
diff --git a/hw/arm/allwinner-a10.c b/hw/arm/allwinner-a10.c
index 9fe875cdb5..df0d079ad0 100644
--- a/hw/arm/allwinner-a10.c
+++ b/hw/arm/allwinner-a10.c
@@ -22,6 +22,7 @@
#include "hw/sysbus.h"
#include "hw/devices.h"
#include "hw/arm/allwinner-a10.h"
+#include "hw/misc/unimp.h"
static void aw_a10_init(Object *obj)
@@ -85,6 +86,11 @@ static void aw_a10_realize(DeviceState *dev, Error **errp)
sysbus_connect_irq(sysbusdev, 4, s->irq[67]);
sysbus_connect_irq(sysbusdev, 5, s->irq[68]);
+ memory_region_init_ram(&s->sram_a, OBJECT(dev), "sram A", 48 * KiB,
+ &error_fatal);
+ memory_region_add_subregion(get_system_memory(), 0x00000000, &s->sram_a);
+ create_unimplemented_device("a10-sram-ctrl", 0x01c00000, 4 * KiB);
/* FIXME use qdev NIC properties instead of nd_table[] */
if (nd_table[0].used) {
qemu_check_nic_model(&nd_table[0], TYPE_AW_EMAC);
diff --git a/include/hw/arm/allwinner-a10.h b/include/hw/arm/allwinner-a10.h
index efb8fc8123..389e128d0f 100644
--- a/include/hw/arm/allwinner-a10.h
+++ b/include/hw/arm/allwinner-a10.h
@@ -35,6 +35,7 @@ typedef struct AwA10State {
AwA10PICState intc;
AwEmacState emac;
AllwinnerAHCIState sata;
+ MemoryRegion sram_a;
} AwA10State;
#define ALLWINNER_H_