[PULL,008/114] hw/arm: Model TCMs in the SSE-300, not the AN547

Commit Message

Peter Maydell May 25, 2021, 3:01 p.m. UTC

The SSE-300 has an ITCM at 0x0000_0000 and a DTCM at 0x2000_0000.
Currently we model these in the AN547 board, but this is conceptually
wrong, because they are a part of the SSE-300 itself. Move the
modelling of the TCMs out of mps2-tz.c into sse300.c.

This has no guest-visible effects.

Signed-off-by: Peter Maydell <[e-mail]>
Reviewed-by: Richard Henderson <[e-mail]>
Message-id: [e-mail]
---
 include/hw/arm/armsse.h |  2 ++
 hw/arm/armsse.c         | 19 +++++++++++++++++++
 hw/arm/mps2-tz.c        | 12 ------------
 3 files changed, 21 insertions(+), 12 deletions(-)

Patch

diff --git a/include/hw/arm/armsse.h b/include/hw/arm/armsse.h
index 36592be62c5..9648e7a4193 100644
--- a/include/hw/arm/armsse.h
+++ b/include/hw/arm/armsse.h
@@ -198,6 +198,8 @@  struct ARMSSE {
     MemoryRegion alias2;
     MemoryRegion alias3[SSE_MAX_CPUS];
     MemoryRegion sram[MAX_SRAM_BANKS];
+    MemoryRegion itcm;
+    MemoryRegion dtcm;
 
     qemu_irq *exp_irqs[SSE_MAX_CPUS];
     qemu_irq ppc0_irq;
diff --git a/hw/arm/armsse.c b/hw/arm/armsse.c
index be5aa1f113a..a1456cb0f42 100644
--- a/hw/arm/armsse.c
+++ b/hw/arm/armsse.c
@@ -13,6 +13,7 @@ 
 #include "qemu/log.h"
 #include "qemu/module.h"
 #include "qemu/bitops.h"
+#include "qemu/units.h"
 #include "qapi/error.h"
 #include "trace.h"
 #include "hw/sysbus.h"
@@ -70,6 +71,7 @@  struct ARMSSEInfo {
     bool has_cpuid;
     bool has_cpu_pwrctrl;
     bool has_sse_counter;
+    bool has_tcms;
     Property *props;
     const ARMSSEDeviceInfo *devinfo;
     const bool *irq_is_common;
@@ -516,6 +518,7 @@  static const ARMSSEInfo armsse_variants[] = {
         .has_cpuid = false,
         .has_cpu_pwrctrl = false,
         .has_sse_counter = false,
+        .has_tcms = false,
         .props = iotkit_properties,
         .devinfo = iotkit_devices,
         .irq_is_common = sse200_irq_is_common,
@@ -536,6 +539,7 @@  static const ARMSSEInfo armsse_variants[] = {
         .has_cpuid = true,
         .has_cpu_pwrctrl = false,
         .has_sse_counter = false,
+        .has_tcms = false,
         .props = sse200_properties,
         .devinfo = sse200_devices,
         .irq_is_common = sse200_irq_is_common,
@@ -556,6 +560,7 @@  static const ARMSSEInfo armsse_variants[] = {
         .has_cpuid = true,
         .has_cpu_pwrctrl = true,
         .has_sse_counter = true,
+        .has_tcms = true,
         .props = sse300_properties,
         .devinfo = sse300_devices,
         .irq_is_common = sse300_irq_is_common,
@@ -1214,6 +1219,20 @@  static void armsse_realize(DeviceState *dev, Error **errp)
                                     sysbus_mmio_get_region(sbd, 1));
     }
 
+    if (info->has_tcms) {
+        /* The SSE-300 has an ITCM at 0x0000_0000 and a DTCM at 0x2000_0000 */
+        memory_region_init_ram(&s->itcm, NULL, "sse300-itcm", 512 * KiB, errp);
+        if (*errp) {
+            return;
+        }
+        memory_region_init_ram(&s->dtcm, NULL, "sse300-dtcm", 512 * KiB, errp);
+        if (*errp) {
+            return;
+        }
+        memory_region_add_subregion(&s->container, 0x00000000, &s->itcm);
+        memory_region_add_subregion(&s->container, 0x20000000, &s->dtcm);
+    }
+
     /* Devices behind APB PPC0:
      *   0x40000000: timer0
      *   0x40001000: timer1
diff --git a/hw/arm/mps2-tz.c b/hw/arm/mps2-tz.c
index 8d921afec14..e23830f4b7d 100644
--- a/hw/arm/mps2-tz.c
+++ b/hw/arm/mps2-tz.c
@@ -265,23 +265,11 @@  static const RAMInfo an524_raminfo[] = { {
 };
 
 static const RAMInfo an547_raminfo[] = { {
-        .name = "itcm",
-        .base = 0x00000000,
-        .size = 512 * KiB,
-        .mpc = -1,
-        .mrindex = 0,
-    }, {
         .name = "sram",
         .base = 0x01000000,
         .size = 2 * MiB,
         .mpc = 0,
         .mrindex = 1,
-    }, {
-        .name = "dtcm",
-        .base = 0x20000000,
-        .size = 4 * 128 * KiB,
-        .mpc = -1,
-        .mrindex = 2,
     }, {
         .name = "sram 2",
         .base = 0x21000000,