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-rw-r--r--target-arm/cpu.c40
-rw-r--r--target-arm/cpu.h1
-rw-r--r--target-arm/helper.c202
3 files changed, 126 insertions, 117 deletions
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index 8fcb730..6190091 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -71,7 +71,6 @@ static void arm_cpu_reset(CPUState *s)
memset(env, 0, offsetof(CPUARMState, breakpoints));
g_hash_table_foreach(cpu->cp_regs, cp_reg_reset, cpu);
- 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;
@@ -92,7 +91,6 @@ static void arm_cpu_reset(CPUState *s)
env->cp15.c0_c2[3] = cpu->id_isar3;
env->cp15.c0_c2[4] = cpu->id_isar4;
env->cp15.c0_c2[5] = cpu->id_isar5;
- env->cp15.c15_i_min = 0xff0;
env->cp15.c0_clid = cpu->clidr;
memcpy(env->cp15.c0_ccsid, cpu->ccsidr, ARRAY_SIZE(cpu->ccsidr));
@@ -399,6 +397,35 @@ static void cortex_a8_initfn(Object *obj)
cpu->ccsidr[2] = 0xf0000000; /* No L2 icache. */
}
+static const ARMCPRegInfo cortexa9_cp_reginfo[] = {
+ /* power_control should be set to maximum latency. Again,
+ * default to 0 and set by private hook
+ */
+ { .name = "A9_PWRCTL", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
+ .access = PL1_RW, .resetvalue = 0,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_power_control) },
+ { .name = "A9_DIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 1,
+ .access = PL1_RW, .resetvalue = 0,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_diagnostic) },
+ { .name = "A9_PWRDIAG", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 2,
+ .access = PL1_RW, .resetvalue = 0,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_power_diagnostic) },
+ { .name = "NEONBUSY", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
+ .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
+ /* TLB lockdown control */
+ { .name = "TLB_LOCKR", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 2,
+ .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
+ { .name = "TLB_LOCKW", .cp = 15, .crn = 15, .crm = 4, .opc1 = 5, .opc2 = 4,
+ .access = PL1_W, .resetvalue = 0, .type = ARM_CP_NOP },
+ { .name = "TLB_VA", .cp = 15, .crn = 15, .crm = 5, .opc1 = 5, .opc2 = 2,
+ .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
+ { .name = "TLB_PA", .cp = 15, .crn = 15, .crm = 6, .opc1 = 5, .opc2 = 2,
+ .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
+ { .name = "TLB_ATTR", .cp = 15, .crn = 15, .crm = 7, .opc1 = 5, .opc2 = 2,
+ .access = PL1_RW, .resetvalue = 0, .type = ARM_CP_CONST },
+ REGINFO_SENTINEL
+};
+
static void cortex_a9_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
@@ -434,6 +461,15 @@ static void cortex_a9_initfn(Object *obj)
cpu->clidr = (1 << 27) | (1 << 24) | 3;
cpu->ccsidr[0] = 0xe00fe015; /* 16k L1 dcache. */
cpu->ccsidr[1] = 0x200fe015; /* 16k L1 icache. */
+ {
+ ARMCPRegInfo cbar = {
+ .name = "CBAR", .cp = 15, .crn = 15, .crm = 0, .opc1 = 4,
+ .opc2 = 0, .access = PL1_R|PL3_W, .resetvalue = cpu->reset_cbar,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_config_base_address)
+ };
+ define_one_arm_cp_reg(cpu, &cbar);
+ define_arm_cp_regs(cpu, cortexa9_cp_reginfo);
+ }
}
static void cortex_a15_initfn(Object *obj)
diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index a61cb07..b94503d 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -386,6 +386,7 @@ enum arm_features {
ARM_FEATURE_VFP4, /* VFPv4 (implies that NEON is v2) */
ARM_FEATURE_GENERIC_TIMER,
ARM_FEATURE_MVFR, /* Media and VFP Feature Registers 0 and 1 */
+ ARM_FEATURE_DUMMY_C15_REGS, /* RAZ/WI all of cp15 crn=15 */
};
static inline int arm_feature(CPUARMState *env, int feature)
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 5fa4ed5..0d7200f 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -492,10 +492,91 @@ static const ARMCPRegInfo vmsa_cp_reginfo[] = {
REGINFO_SENTINEL
};
+static int omap_ticonfig_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ env->cp15.c15_ticonfig = value & 0xe7;
+ /* The OS_TYPE bit in this register changes the reported CPUID! */
+ env->cp15.c0_cpuid = (value & (1 << 5)) ?
+ ARM_CPUID_TI915T : ARM_CPUID_TI925T;
+ return 0;
+}
+
+static int omap_threadid_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ env->cp15.c15_threadid = value & 0xffff;
+ return 0;
+}
+
+static int omap_wfi_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ /* Wait-for-interrupt (deprecated) */
+ cpu_interrupt(env, CPU_INTERRUPT_HALT);
+ return 0;
+}
+
static const ARMCPRegInfo omap_cp_reginfo[] = {
{ .name = "DFSR", .cp = 15, .crn = 5, .crm = CP_ANY,
.opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_RW, .type = ARM_CP_OVERRIDE,
.fieldoffset = offsetof(CPUARMState, cp15.c5_data), .resetvalue = 0, },
+ { .name = "", .cp = 15, .crn = 15, .crm = 0, .opc1 = 0, .opc2 = 0,
+ .access = PL1_RW, .type = ARM_CP_NOP },
+ { .name = "TICONFIG", .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0,
+ .access = PL1_RW,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_ticonfig), .resetvalue = 0,
+ .writefn = omap_ticonfig_write },
+ { .name = "IMAX", .cp = 15, .crn = 15, .crm = 2, .opc1 = 0, .opc2 = 0,
+ .access = PL1_RW,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_i_max), .resetvalue = 0, },
+ { .name = "IMIN", .cp = 15, .crn = 15, .crm = 3, .opc1 = 0, .opc2 = 0,
+ .access = PL1_RW, .resetvalue = 0xff0,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_i_min) },
+ { .name = "THREADID", .cp = 15, .crn = 15, .crm = 4, .opc1 = 0, .opc2 = 0,
+ .access = PL1_RW,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_threadid), .resetvalue = 0,
+ .writefn = omap_threadid_write },
+ { .name = "TI925T_STATUS", .cp = 15, .crn = 15,
+ .crm = 8, .opc1 = 0, .opc2 = 0, .access = PL1_RW,
+ .readfn = arm_cp_read_zero, .writefn = omap_wfi_write, },
+ /* TODO: Peripheral port remap register:
+ * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt controller
+ * base address at $rn & ~0xfff and map size of 0x200 << ($rn & 0xfff),
+ * when MMU is off.
+ */
+ REGINFO_SENTINEL
+};
+
+static int xscale_cpar_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ value &= 0x3fff;
+ if (env->cp15.c15_cpar != value) {
+ /* Changes cp0 to cp13 behavior, so needs a TB flush. */
+ tb_flush(env);
+ env->cp15.c15_cpar = value;
+ }
+ return 0;
+}
+
+static const ARMCPRegInfo xscale_cp_reginfo[] = {
+ { .name = "XSCALE_CPAR",
+ .cp = 15, .crn = 15, .crm = 1, .opc1 = 0, .opc2 = 0, .access = PL1_RW,
+ .fieldoffset = offsetof(CPUARMState, cp15.c15_cpar), .resetvalue = 0,
+ .writefn = xscale_cpar_write, },
+ REGINFO_SENTINEL
+};
+
+static const ARMCPRegInfo dummy_c15_cp_reginfo[] = {
+ /* RAZ/WI the whole crn=15 space, when we don't have a more specific
+ * implementation of this implementation-defined space.
+ * Ideally this should eventually disappear in favour of actually
+ * implementing the correct behaviour for all cores.
+ */
+ { .name = "C15_IMPDEF", .cp = 15, .crn = 15,
+ .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY,
+ .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
REGINFO_SENTINEL
};
@@ -552,6 +633,12 @@ void register_cp_regs_for_features(ARMCPU *cpu)
if (arm_feature(env, ARM_FEATURE_OMAPCP)) {
define_arm_cp_regs(cpu, omap_cp_reginfo);
}
+ if (arm_feature(env, ARM_FEATURE_XSCALE)) {
+ define_arm_cp_regs(cpu, xscale_cp_reginfo);
+ }
+ if (arm_feature(env, ARM_FEATURE_DUMMY_C15_REGS)) {
+ define_arm_cp_regs(cpu, dummy_c15_cp_reginfo);
+ }
}
ARMCPU *cpu_arm_init(const char *cpu_model)
@@ -1802,58 +1889,6 @@ void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val)
break;
case 12: /* Reserved. */
goto bad_reg;
- case 15: /* Implementation specific. */
- if (arm_feature(env, ARM_FEATURE_XSCALE)) {
- if (op2 == 0 && crm == 1) {
- if (env->cp15.c15_cpar != (val & 0x3fff)) {
- /* Changes cp0 to cp13 behavior, so needs a TB flush. */
- tb_flush(env);
- env->cp15.c15_cpar = val & 0x3fff;
- }
- break;
- }
- goto bad_reg;
- }
- if (arm_feature(env, ARM_FEATURE_OMAPCP)) {
- switch (crm) {
- case 0:
- break;
- case 1: /* Set TI925T configuration. */
- env->cp15.c15_ticonfig = val & 0xe7;
- env->cp15.c0_cpuid = (val & (1 << 5)) ? /* OS_TYPE bit */
- ARM_CPUID_TI915T : ARM_CPUID_TI925T;
- break;
- case 2: /* Set I_max. */
- env->cp15.c15_i_max = val;
- break;
- case 3: /* Set I_min. */
- env->cp15.c15_i_min = val;
- break;
- case 4: /* Set thread-ID. */
- env->cp15.c15_threadid = val & 0xffff;
- break;
- case 8: /* Wait-for-interrupt (deprecated). */
- cpu_interrupt(env, CPU_INTERRUPT_HALT);
- break;
- default:
- goto bad_reg;
- }
- }
- if (ARM_CPUID(env) == ARM_CPUID_CORTEXA9) {
- switch (crm) {
- case 0:
- if ((op1 == 0) && (op2 == 0)) {
- env->cp15.c15_power_control = val;
- } else if ((op1 == 0) && (op2 == 1)) {
- env->cp15.c15_diagnostic = val;
- } else if ((op1 == 0) && (op2 == 2)) {
- env->cp15.c15_power_diagnostic = val;
- }
- default:
- break;
- }
- }
- break;
}
return;
bad_reg:
@@ -2080,69 +2115,6 @@ uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn)
case 11: /* TCM DMA control. */
case 12: /* Reserved. */
goto bad_reg;
- case 15: /* Implementation specific. */
- if (arm_feature(env, ARM_FEATURE_XSCALE)) {
- if (op2 == 0 && crm == 1)
- return env->cp15.c15_cpar;
-
- goto bad_reg;
- }
- if (arm_feature(env, ARM_FEATURE_OMAPCP)) {
- switch (crm) {
- case 0:
- return 0;
- case 1: /* Read TI925T configuration. */
- return env->cp15.c15_ticonfig;
- case 2: /* Read I_max. */
- return env->cp15.c15_i_max;
- case 3: /* Read I_min. */
- return env->cp15.c15_i_min;
- case 4: /* Read thread-ID. */
- return env->cp15.c15_threadid;
- case 8: /* TI925T_status */
- return 0;
- }
- /* TODO: Peripheral port remap register:
- * On OMAP2 mcr p15, 0, rn, c15, c2, 4 sets up the interrupt
- * controller base address at $rn & ~0xfff and map size of
- * 0x200 << ($rn & 0xfff), when MMU is off. */
- goto bad_reg;
- }
- if (ARM_CPUID(env) == ARM_CPUID_CORTEXA9) {
- switch (crm) {
- case 0:
- if ((op1 == 4) && (op2 == 0)) {
- /* The config_base_address should hold the value of
- * the peripheral base. ARM should get this from a CPU
- * object property, but that support isn't available in
- * December 2011. Default to 0 for now and board models
- * that care can set it by a private hook */
- return env->cp15.c15_config_base_address;
- } else if ((op1 == 0) && (op2 == 0)) {
- /* power_control should be set to maximum latency. Again,
- default to 0 and set by private hook */
- return env->cp15.c15_power_control;
- } else if ((op1 == 0) && (op2 == 1)) {
- return env->cp15.c15_diagnostic;
- } else if ((op1 == 0) && (op2 == 2)) {
- return env->cp15.c15_power_diagnostic;
- }
- break;
- case 1: /* NEON Busy */
- return 0;
- case 5: /* tlb lockdown */
- case 6:
- case 7:
- if ((op1 == 5) && (op2 == 2)) {
- return 0;
- }
- break;
- default:
- break;
- }
- goto bad_reg;
- }
- return 0;
}
bad_reg:
/* ??? For debugging only. Should raise illegal instruction exception. */
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