{ .name = "ILOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_insn),
.resetvalue = 0 },
+ /* v6 doesn't have the cache ID registers but Linux reads them anyway */
+ { .name = "DUMMY", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = CP_ANY,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
REGINFO_SENTINEL
};
return 0;
}
+static int ccsidr_read(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t *value)
+{
+ ARMCPU *cpu = arm_env_get_cpu(env);
+ *value = cpu->ccsidr[env->cp15.c0_cssel];
+ return 0;
+}
+
+static int csselr_write(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t value)
+{
+ env->cp15.c0_cssel = value & 0xf;
+ return 0;
+}
+
static const ARMCPRegInfo v7_cp_reginfo[] = {
/* DBGDRAR, DBGDSAR: always RAZ since we don't implement memory mapped
* debug components
{ .name = "SCR", .cp = 15, .crn = 1, .crm = 1, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c1_scr),
.resetvalue = 0, },
+ { .name = "CCSIDR", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 0,
+ .access = PL1_R, .readfn = ccsidr_read },
+ { .name = "CSSELR", .cp = 15, .crn = 0, .crm = 0, .opc1 = 2, .opc2 = 0,
+ .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c0_cssel),
+ .writefn = csselr_write, .resetvalue = 0 },
+ /* Auxiliary ID register: this actually has an IMPDEF value but for now
+ * just RAZ for all cores:
+ */
+ { .name = "AIDR", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 7,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
REGINFO_SENTINEL
};
/* We never have a a block transfer operation in progress */
{ .name = "BXSR", .cp = 15, .crn = 7, .crm = 12, .opc1 = 0, .opc2 = 4,
.access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+ /* The cache ops themselves: these all NOP for QEMU */
+ { .name = "IICR", .cp = 15, .crm = 5, .opc1 = 0,
+ .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
+ { .name = "IDCR", .cp = 15, .crm = 6, .opc1 = 0,
+ .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
+ { .name = "CDCR", .cp = 15, .crm = 12, .opc1 = 0,
+ .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
+ { .name = "PIR", .cp = 15, .crm = 12, .opc1 = 1,
+ .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
+ { .name = "PDR", .cp = 15, .crm = 12, .opc1 = 2,
+ .access = PL0_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
+ { .name = "CIDCR", .cp = 15, .crm = 14, .opc1 = 0,
+ .access = PL1_W, .type = ARM_CP_NOP|ARM_CP_64BIT },
REGINFO_SENTINEL
};
REGINFO_SENTINEL
};
+static int mpidr_read(CPUARMState *env, const ARMCPRegInfo *ri,
+ uint64_t *value)
+{
+ uint32_t mpidr = env->cpu_index;
+ /* We don't support setting cluster ID ([8..11])
+ * so these bits always RAZ.
+ */
+ if (arm_feature(env, ARM_FEATURE_V7MP)) {
+ mpidr |= (1 << 31);
+ /* Cores which are uniprocessor (non-coherent)
+ * but still implement the MP extensions set
+ * bit 30. (For instance, A9UP.) However we do
+ * not currently model any of those cores.
+ */
+ }
+ *value = mpidr;
+ return 0;
+}
+
+static const ARMCPRegInfo mpidr_cp_reginfo[] = {
+ { .name = "MPIDR", .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 5,
+ .access = PL1_R, .readfn = mpidr_read },
+ REGINFO_SENTINEL
+};
+
static int sctlr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
{
env->cp15.c1_sys = value;
define_arm_cp_regs(cpu, cp_reginfo);
if (arm_feature(env, ARM_FEATURE_V6)) {
+ /* The ID registers all have impdef reset values */
+ ARMCPRegInfo v6_idregs[] = {
+ { .name = "ID_PFR0", .cp = 15, .crn = 0, .crm = 1,
+ .opc1 = 0, .opc2 = 0, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_pfr0 },
+ { .name = "ID_PFR1", .cp = 15, .crn = 0, .crm = 1,
+ .opc1 = 0, .opc2 = 1, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_pfr1 },
+ { .name = "ID_DFR0", .cp = 15, .crn = 0, .crm = 1,
+ .opc1 = 0, .opc2 = 2, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_dfr0 },
+ { .name = "ID_AFR0", .cp = 15, .crn = 0, .crm = 1,
+ .opc1 = 0, .opc2 = 3, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_afr0 },
+ { .name = "ID_MMFR0", .cp = 15, .crn = 0, .crm = 1,
+ .opc1 = 0, .opc2 = 4, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_mmfr0 },
+ { .name = "ID_MMFR1", .cp = 15, .crn = 0, .crm = 1,
+ .opc1 = 0, .opc2 = 5, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_mmfr1 },
+ { .name = "ID_MMFR2", .cp = 15, .crn = 0, .crm = 1,
+ .opc1 = 0, .opc2 = 6, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_mmfr2 },
+ { .name = "ID_MMFR3", .cp = 15, .crn = 0, .crm = 1,
+ .opc1 = 0, .opc2 = 7, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_mmfr3 },
+ { .name = "ID_ISAR0", .cp = 15, .crn = 0, .crm = 2,
+ .opc1 = 0, .opc2 = 0, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_isar0 },
+ { .name = "ID_ISAR1", .cp = 15, .crn = 0, .crm = 2,
+ .opc1 = 0, .opc2 = 1, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_isar1 },
+ { .name = "ID_ISAR2", .cp = 15, .crn = 0, .crm = 2,
+ .opc1 = 0, .opc2 = 2, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_isar2 },
+ { .name = "ID_ISAR3", .cp = 15, .crn = 0, .crm = 2,
+ .opc1 = 0, .opc2 = 3, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_isar3 },
+ { .name = "ID_ISAR4", .cp = 15, .crn = 0, .crm = 2,
+ .opc1 = 0, .opc2 = 4, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_isar4 },
+ { .name = "ID_ISAR5", .cp = 15, .crn = 0, .crm = 2,
+ .opc1 = 0, .opc2 = 5, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = cpu->id_isar5 },
+ /* 6..7 are as yet unallocated and must RAZ */
+ { .name = "ID_ISAR6", .cp = 15, .crn = 0, .crm = 2,
+ .opc1 = 0, .opc2 = 6, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = 0 },
+ { .name = "ID_ISAR7", .cp = 15, .crn = 0, .crm = 2,
+ .opc1 = 0, .opc2 = 7, .access = PL1_R, .type = ARM_CP_CONST,
+ .resetvalue = 0 },
+ REGINFO_SENTINEL
+ };
+ define_arm_cp_regs(cpu, v6_idregs);
define_arm_cp_regs(cpu, v6_cp_reginfo);
} else {
define_arm_cp_regs(cpu, not_v6_cp_reginfo);
.fieldoffset = offsetof(CPUARMState, cp15.c9_pmcr),
.readfn = pmreg_read, .writefn = pmcr_write
};
+ ARMCPRegInfo clidr = {
+ .name = "CLIDR", .cp = 15, .crn = 0, .crm = 0, .opc1 = 1, .opc2 = 1,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->clidr
+ };
define_one_arm_cp_reg(cpu, &pmcr);
+ define_one_arm_cp_reg(cpu, &clidr);
define_arm_cp_regs(cpu, v7_cp_reginfo);
} else {
define_arm_cp_regs(cpu, not_v7_cp_reginfo);
if (arm_feature(env, ARM_FEATURE_DUMMY_C15_REGS)) {
define_arm_cp_regs(cpu, dummy_c15_cp_reginfo);
}
+ if (arm_feature(env, ARM_FEATURE_MPIDR)) {
+ define_arm_cp_regs(cpu, mpidr_cp_reginfo);
+ }
+ /* Slightly awkwardly, the OMAP and StrongARM cores need all of
+ * cp15 crn=0 to be writes-ignored, whereas for other cores they should
+ * be read-only (ie write causes UNDEF exception).
+ */
+ {
+ ARMCPRegInfo id_cp_reginfo[] = {
+ /* Note that the MIDR isn't a simple constant register because
+ * of the TI925 behaviour where writes to another register can
+ * cause the MIDR value to change.
+ */
+ { .name = "MIDR",
+ .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0,
+ .access = PL1_R, .resetvalue = cpu->midr,
+ .writefn = arm_cp_write_ignore,
+ .fieldoffset = offsetof(CPUARMState, cp15.c0_cpuid) },
+ { .name = "CTR",
+ .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 1,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = cpu->ctr },
+ { .name = "TCMTR",
+ .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 2,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+ { .name = "TLBTR",
+ .cp = 15, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 3,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+ /* crn = 0 op1 = 0 crm = 3..7 : currently unassigned; we RAZ. */
+ { .name = "DUMMY",
+ .cp = 15, .crn = 0, .crm = 3, .opc1 = 0, .opc2 = CP_ANY,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+ { .name = "DUMMY",
+ .cp = 15, .crn = 0, .crm = 4, .opc1 = 0, .opc2 = CP_ANY,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+ { .name = "DUMMY",
+ .cp = 15, .crn = 0, .crm = 5, .opc1 = 0, .opc2 = CP_ANY,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+ { .name = "DUMMY",
+ .cp = 15, .crn = 0, .crm = 6, .opc1 = 0, .opc2 = CP_ANY,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+ { .name = "DUMMY",
+ .cp = 15, .crn = 0, .crm = 7, .opc1 = 0, .opc2 = CP_ANY,
+ .access = PL1_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+ REGINFO_SENTINEL
+ };
+ ARMCPRegInfo crn0_wi_reginfo = {
+ .name = "CRN0_WI", .cp = 15, .crn = 0, .crm = CP_ANY,
+ .opc1 = CP_ANY, .opc2 = CP_ANY, .access = PL1_W,
+ .type = ARM_CP_NOP | ARM_CP_OVERRIDE
+ };
+ if (arm_feature(env, ARM_FEATURE_OMAPCP) ||
+ arm_feature(env, ARM_FEATURE_STRONGARM)) {
+ ARMCPRegInfo *r;
+ /* Register the blanket "writes ignored" value first to cover the
+ * whole space. Then define the specific ID registers, but update
+ * their access field to allow write access, so that they ignore
+ * writes rather than causing them to UNDEF.
+ */
+ define_one_arm_cp_reg(cpu, &crn0_wi_reginfo);
+ for (r = id_cp_reginfo; r->type != ARM_CP_SENTINEL; r++) {
+ r->access = PL1_RW;
+ define_one_arm_cp_reg(cpu, r);
+ }
+ } else {
+ /* Just register the standard ID registers (read-only, meaning
+ * that writes will UNDEF).
+ */
+ define_arm_cp_regs(cpu, id_cp_reginfo);
+ }
+ }
+
if (arm_feature(env, ARM_FEATURE_AUXCR)) {
ARMCPRegInfo auxcr = {
.name = "AUXCR", .cp = 15, .crn = 1, .crm = 0, .opc1 = 0, .opc2 = 1,
return 1;
}
-void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val)
-{
- cpu_abort(env, "cp15 insn %08x\n", insn);
-}
-
-uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn)
-{
- cpu_abort(env, "cp15 insn %08x\n", insn);
-}
-
/* These should probably raise undefined insn exceptions. */
void HELPER(v7m_msr)(CPUARMState *env, uint32_t reg, uint32_t val)
{
return phys_addr;
}
-void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val)
-{
- int op1;
- int op2;
- int crm;
-
- op1 = (insn >> 21) & 7;
- op2 = (insn >> 5) & 7;
- crm = insn & 0xf;
- switch ((insn >> 16) & 0xf) {
- case 0:
- /* ID codes. */
- if (arm_feature(env, ARM_FEATURE_XSCALE))
- break;
- if (arm_feature(env, ARM_FEATURE_OMAPCP))
- break;
- if (arm_feature(env, ARM_FEATURE_V7)
- && op1 == 2 && crm == 0 && op2 == 0) {
- env->cp15.c0_cssel = val & 0xf;
- break;
- }
- goto bad_reg;
- case 4: /* Reserved. */
- goto bad_reg;
- case 12: /* Reserved. */
- goto bad_reg;
- }
- return;
-bad_reg:
- /* ??? For debugging only. Should raise illegal instruction exception. */
- cpu_abort(env, "Unimplemented cp15 register write (c%d, c%d, {%d, %d})\n",
- (insn >> 16) & 0xf, crm, op1, op2);
-}
-
-uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn)
-{
- int op1;
- int op2;
- int crm;
-
- op1 = (insn >> 21) & 7;
- op2 = (insn >> 5) & 7;
- crm = insn & 0xf;
- switch ((insn >> 16) & 0xf) {
- case 0: /* ID codes. */
- switch (op1) {
- case 0:
- switch (crm) {
- case 0:
- switch (op2) {
- case 0: /* Device ID. */
- return env->cp15.c0_cpuid;
- case 1: /* Cache Type. */
- return env->cp15.c0_cachetype;
- case 2: /* TCM status. */
- return 0;
- case 3: /* TLB type register. */
- return 0; /* No lockable TLB entries. */
- case 5: /* MPIDR */
- /* The MPIDR was standardised in v7; prior to
- * this it was implemented only in the 11MPCore.
- * For all other pre-v7 cores it does not exist.
- */
- if (arm_feature(env, ARM_FEATURE_V7) ||
- ARM_CPUID(env) == ARM_CPUID_ARM11MPCORE) {
- int mpidr = env->cpu_index;
- /* We don't support setting cluster ID ([8..11])
- * so these bits always RAZ.
- */
- if (arm_feature(env, ARM_FEATURE_V7MP)) {
- mpidr |= (1 << 31);
- /* Cores which are uniprocessor (non-coherent)
- * but still implement the MP extensions set
- * bit 30. (For instance, A9UP.) However we do
- * not currently model any of those cores.
- */
- }
- return mpidr;
- }
- /* otherwise fall through to the unimplemented-reg case */
- default:
- goto bad_reg;
- }
- case 1:
- if (!arm_feature(env, ARM_FEATURE_V6))
- goto bad_reg;
- return env->cp15.c0_c1[op2];
- case 2:
- if (!arm_feature(env, ARM_FEATURE_V6))
- goto bad_reg;
- return env->cp15.c0_c2[op2];
- case 3: case 4: case 5: case 6: case 7:
- return 0;
- default:
- goto bad_reg;
- }
- case 1:
- /* These registers aren't documented on arm11 cores. However
- Linux looks at them anyway. */
- if (!arm_feature(env, ARM_FEATURE_V6))
- goto bad_reg;
- if (crm != 0)
- goto bad_reg;
- if (!arm_feature(env, ARM_FEATURE_V7))
- return 0;
-
- switch (op2) {
- case 0:
- return env->cp15.c0_ccsid[env->cp15.c0_cssel];
- case 1:
- return env->cp15.c0_clid;
- case 7:
- return 0;
- }
- goto bad_reg;
- case 2:
- if (op2 != 0 || crm != 0)
- goto bad_reg;
- return env->cp15.c0_cssel;
- default:
- goto bad_reg;
- }
- case 4: /* Reserved. */
- goto bad_reg;
- case 11: /* TCM DMA control. */
- case 12: /* Reserved. */
- goto bad_reg;
- }
-bad_reg:
- /* ??? For debugging only. Should raise illegal instruction exception. */
- cpu_abort(env, "Unimplemented cp15 register read (c%d, c%d, {%d, %d})\n",
- (insn >> 16) & 0xf, crm, op1, op2);
- return 0;
-}
-
void HELPER(set_r13_banked)(CPUARMState *env, uint32_t mode, uint32_t val)
{
if ((env->uncached_cpsr & CPSR_M) == mode) {
projects / qemu.git / blobdiff