[Qemu-devel] [PATCH 14/14] target-arm: Move A9 config_base_address reset value to ARMCPU

[Peter Maydell]

Move the A9 config_base_address cp15 register reset value to
ARMCPU. This should become a QOM property so that the Highbank
board can set it without having to pull in cpu-qom.h, but at
least this avoids the implicit dependency on reset ordering
that the previous workaround had.

Cc: Mark Langsdorf <mark.langsd...@calxeda.com>
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
 hw/highbank.c        |   12 +++++-------
 target-arm/cpu-qom.h |    1 +
 target-arm/cpu.c     |    4 +---
 3 files changed, 7 insertions(+), 10 deletions(-)

diff --git a/hw/highbank.c b/hw/highbank.c
index 906eed5..b007f97 100644
--- a/hw/highbank.c
+++ b/hw/highbank.c
@@ -27,6 +27,7 @@
 #include "sysbus.h"
 #include "blockdev.h"
 #include "exec-memory.h"
+#include "cpu-qom.h"
 
 #define SMP_BOOT_ADDR 0x100
 #define SMP_BOOT_REG  0x40
@@ -35,12 +36,6 @@
 #define NIRQ_GIC      160
 
 /* Board init.  */
-static void highbank_cpu_reset(void *opaque)
-{
-    CPUARMState *env = opaque;
-
-    env->cp15.c15_config_base_address = GIC_BASE_ADDR;
-}
 
 static void hb_write_secondary(CPUARMState *env, const struct arm_boot_info 
*info)
 {
@@ -213,14 +208,17 @@ static void highbank_init(ram_addr_t ram_size,
     }
 
     for (n = 0; n < smp_cpus; n++) {
+        ARMCPU *cpu;
         env = cpu_init(cpu_model);
         if (!env) {
             fprintf(stderr, "Unable to find CPU definition\n");
             exit(1);
         }
+        cpu = arm_env_get_cpu(env);
+        /* This will become a QOM property eventually */
+        cpu->reset_cbar = GIC_BASE_ADDR;
         irqp = arm_pic_init_cpu(env);
         cpu_irq[n] = irqp[ARM_PIC_CPU_IRQ];
-        qemu_register_reset(highbank_cpu_reset, env);
     }
 
     sysmem = get_system_memory();
diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h
index 55dc920..c42755a 100644
--- a/target-arm/cpu-qom.h
+++ b/target-arm/cpu-qom.h
@@ -84,6 +84,7 @@ typedef struct ARMCPU {
     uint32_t id_isar5;
     uint32_t clidr;
     uint32_t ccsidr[16];
+    uint32_t reset_cbar;
 } ARMCPU;
 
 static inline ARMCPU *arm_env_get_cpu(CPUARMState *env)
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index 66f76a8..653e2b3 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -30,7 +30,6 @@ static void arm_cpu_reset(CPUState *s)
     ARMCPU *cpu = ARM_CPU(s);
     ARMCPUClass *acc = ARM_CPU_GET_CLASS(cpu);
     CPUARMState *env = &cpu->env;
-    uint32_t tmp = 0;
 
     if (qemu_loglevel_mask(CPU_LOG_RESET)) {
         qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
@@ -39,9 +38,8 @@ static void arm_cpu_reset(CPUState *s)
 
     acc->parent_reset(s);
 
-    tmp = env->cp15.c15_config_base_address;
     memset(env, 0, offsetof(CPUARMState, breakpoints));
-    env->cp15.c15_config_base_address = tmp;
+    env->cp15.c15_config_base_address = cpu->reset_cbar;
     env->cp15.c0_cpuid = cpu->midr;
     env->vfp.xregs[ARM_VFP_FPSID] = cpu->reset_fpsid;
     env->vfp.xregs[ARM_VFP_MVFR0] = cpu->mvfr0;
-- 
1.7.1