diff options
| -rw-r--r-- | target-arm/cpu-qom.h | 1 | ||||
| -rw-r--r-- | target-arm/cpu.c | 3 | ||||
| -rw-r--r-- | target-arm/cpu64.c | 1 | ||||
| -rw-r--r-- | target-arm/helper.c | 33 |
4 files changed, 31 insertions, 7 deletions
diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h index ee4fbb1dad..07f3c9e866 100644 --- a/target-arm/cpu-qom.h +++ b/target-arm/cpu-qom.h @@ -148,6 +148,7 @@ typedef struct ARMCPU { uint64_t id_aa64isar1; uint64_t id_aa64mmfr0; uint64_t id_aa64mmfr1; + uint32_t dbgdidr; uint32_t clidr; /* The elements of this array are the CCSIDR values for each cache, * in the order L1DCache, L1ICache, L2DCache, L2ICache, etc. diff --git a/target-arm/cpu.c b/target-arm/cpu.c index 7cebb76656..e27cca28be 100644 --- a/target-arm/cpu.c +++ b/target-arm/cpu.c @@ -640,6 +640,7 @@ static void cortex_a8_initfn(Object *obj) cpu->id_isar2 = 0x21232031; cpu->id_isar3 = 0x11112131; cpu->id_isar4 = 0x00111142; + cpu->dbgdidr = 0x15141000; cpu->clidr = (1 << 27) | (2 << 24) | 3; cpu->ccsidr[0] = 0xe007e01a; /* 16k L1 dcache. */ cpu->ccsidr[1] = 0x2007e01a; /* 16k L1 icache. */ @@ -712,6 +713,7 @@ static void cortex_a9_initfn(Object *obj) cpu->id_isar2 = 0x21232041; cpu->id_isar3 = 0x11112131; cpu->id_isar4 = 0x00111142; + cpu->dbgdidr = 0x35141000; cpu->clidr = (1 << 27) | (1 << 24) | 3; cpu->ccsidr[0] = 0xe00fe015; /* 16k L1 dcache. */ cpu->ccsidr[1] = 0x200fe015; /* 16k L1 icache. */ @@ -773,6 +775,7 @@ static void cortex_a15_initfn(Object *obj) cpu->id_isar2 = 0x21232041; cpu->id_isar3 = 0x11112131; cpu->id_isar4 = 0x10011142; + cpu->dbgdidr = 0x3515f021; cpu->clidr = 0x0a200023; cpu->ccsidr[0] = 0x701fe00a; /* 32K L1 dcache */ cpu->ccsidr[1] = 0x201fe00a; /* 32K L1 icache */ diff --git a/target-arm/cpu64.c b/target-arm/cpu64.c index 8b2081c246..38d2b8445a 100644 --- a/target-arm/cpu64.c +++ b/target-arm/cpu64.c @@ -127,6 +127,7 @@ static void aarch64_a57_initfn(Object *obj) cpu->id_aa64dfr0 = 0x10305106; cpu->id_aa64isar0 = 0x00010000; cpu->id_aa64mmfr0 = 0x00001124; + cpu->dbgdidr = 0x3516d000; cpu->clidr = 0x0a200023; cpu->ccsidr[0] = 0x701fe00a; /* 32KB L1 dcache */ cpu->ccsidr[1] = 0x201fe012; /* 48KB L1 icache */ diff --git a/target-arm/helper.c b/target-arm/helper.c index 700057d622..22bf6d3f68 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -2186,12 +2186,6 @@ static CPAccessResult ctr_el0_access(CPUARMState *env, const ARMCPRegInfo *ri) } static const ARMCPRegInfo debug_cp_reginfo[] = { - /* DBGDIDR: just RAZ. In particular this means the "debug architecture - * version" bits will read as a reserved value, which should cause - * Linux to not try to use the debug hardware. - */ - { .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0, - .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = 0 }, /* DBGDRAR, DBGDSAR: always RAZ since we don't implement memory mapped * debug components. The AArch64 version of DBGDRAR is named MDRAR_EL1; * unlike DBGDRAR it is never accessible from EL0. @@ -2233,14 +2227,32 @@ static void define_debug_regs(ARMCPU *cpu) * These are just dummy implementations for now. */ int i; + int wrps, brps; + ARMCPRegInfo dbgdidr = { + .name = "DBGDIDR", .cp = 14, .crn = 0, .crm = 0, .opc1 = 0, .opc2 = 0, + .access = PL0_R, .type = ARM_CP_CONST, .resetvalue = cpu->dbgdidr, + }; + + brps = extract32(cpu->dbgdidr, 24, 4); + wrps = extract32(cpu->dbgdidr, 28, 4); + + /* The DBGDIDR and ID_AA64DFR0_EL1 define various properties + * of the debug registers such as number of breakpoints; + * check that if they both exist then they agree. + */ + if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) { + assert(extract32(cpu->id_aa64dfr0, 12, 4) == brps); + assert(extract32(cpu->id_aa64dfr0, 20, 4) == wrps); + } + define_one_arm_cp_reg(cpu, &dbgdidr); define_arm_cp_regs(cpu, debug_cp_reginfo); if (arm_feature(&cpu->env, ARM_FEATURE_LPAE)) { define_arm_cp_regs(cpu, debug_lpae_cp_reginfo); } - for (i = 0; i < 16; i++) { + for (i = 0; i < brps + 1; i++) { ARMCPRegInfo dbgregs[] = { { .name = "DBGBVR", .state = ARM_CP_STATE_BOTH, .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 4, @@ -2250,6 +2262,13 @@ static void define_debug_regs(ARMCPU *cpu) .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 5, .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.dbgbcr[i]) }, + REGINFO_SENTINEL + }; + define_arm_cp_regs(cpu, dbgregs); + } + + for (i = 0; i < wrps + 1; i++) { + ARMCPRegInfo dbgregs[] = { { .name = "DBGWVR", .state = ARM_CP_STATE_BOTH, .cp = 14, .opc0 = 2, .opc1 = 0, .crn = 0, .crm = i, .opc2 = 6, .access = PL1_RW, |