diff options
author | Peter Maydell <peter.maydell@linaro.org> | 2012-04-14 16:37:44 +0000 |
---|---|---|
committer | Peter Maydell <peter.maydell@linaro.org> | 2012-04-14 16:37:44 +0000 |
commit | 8c9a74a8710df14db7328bc929df6aa3e1d7f2e3 (patch) | |
tree | 27029934bb390fbb4428adf61edcdb2071bafd39 | |
parent | 54b357e1ccc0ac19502b82f0a185ae138969cb5a (diff) |
target-arm: Convert cp15 crn=9 registers
Convert cp15 crn=9 registers (mostly cache lockdown) to the new scheme.
Note that this change makes OMAPCP cores RAZ/WI the whole c9 space. This is
a change from previous behaviour, but a return to the behaviour of commit
c3d2689d when OMAP1 support was first added -- subsequent commits have
clearly accidentally relegated the OMAPCP RAZ condition to only a subset of
the crn=9 space when adding support for other cores.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r-- | target-arm/cpu.c | 34 | ||||
-rw-r--r-- | target-arm/helper.c | 103 |
2 files changed, 58 insertions, 79 deletions
diff --git a/target-arm/cpu.c b/target-arm/cpu.c index c5bedeeea9..31c982034e 100644 --- a/target-arm/cpu.c +++ b/target-arm/cpu.c @@ -23,6 +23,7 @@ #if !defined(CONFIG_USER_ONLY) #include "hw/loader.h" #endif +#include "sysemu.h" static void cp_reg_reset(void *key, void *value, void *udata) { @@ -383,6 +384,14 @@ static void cortex_m3_initfn(Object *obj) cpu->midr = ARM_CPUID_CORTEXM3; } +static const ARMCPRegInfo cortexa8_cp_reginfo[] = { + { .name = "L2LOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 0, + .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, + { .name = "L2AUXCR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2, + .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, + REGINFO_SENTINEL +}; + static void cortex_a8_initfn(Object *obj) { ARMCPU *cpu = ARM_CPU(obj); @@ -413,6 +422,7 @@ static void cortex_a8_initfn(Object *obj) cpu->ccsidr[0] = 0xe007e01a; /* 16k L1 dcache. */ cpu->ccsidr[1] = 0x2007e01a; /* 16k L1 icache. */ cpu->ccsidr[2] = 0xf0000000; /* No L2 icache. */ + define_arm_cp_regs(&cpu->env, cortexa8_cp_reginfo); } static const ARMCPRegInfo cortexa9_cp_reginfo[] = { @@ -489,6 +499,29 @@ static void cortex_a9_initfn(Object *obj) } } +#ifndef CONFIG_USER_ONLY +static int a15_l2ctlr_read(CPUARMState *env, const ARMCPRegInfo *ri, + uint64_t *value) +{ + /* Linux wants the number of processors from here. + * Might as well set the interrupt-controller bit too. + */ + *value = ((smp_cpus - 1) << 24) | (1 << 23); + return 0; +} +#endif + +static const ARMCPRegInfo cortexa15_cp_reginfo[] = { +#ifndef CONFIG_USER_ONLY + { .name = "L2CTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 2, + .access = PL1_RW, .resetvalue = 0, .readfn = a15_l2ctlr_read, + .writefn = arm_cp_write_ignore, }, +#endif + { .name = "L2ECTLR", .cp = 15, .crn = 9, .crm = 0, .opc1 = 1, .opc2 = 3, + .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, + REGINFO_SENTINEL +}; + static void cortex_a15_initfn(Object *obj) { ARMCPU *cpu = ARM_CPU(obj); @@ -523,6 +556,7 @@ static void cortex_a15_initfn(Object *obj) cpu->ccsidr[0] = 0x701fe00a; /* 32K L1 dcache */ cpu->ccsidr[1] = 0x201fe00a; /* 32K L1 icache */ cpu->ccsidr[2] = 0x711fe07a; /* 4096K L2 unified cache */ + define_arm_cp_regs(&cpu->env, cortexa15_cp_reginfo); } static void ti925t_initfn(Object *obj) diff --git a/target-arm/helper.c b/target-arm/helper.c index 00586467d4..b00410d707 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -187,6 +187,16 @@ static const ARMCPRegInfo not_v7_cp_reginfo[] = { */ { .name = "WFI_v6", .cp = 15, .crn = 7, .crm = 0, .opc1 = 0, .opc2 = 4, .access = PL1_W, .type = ARM_CP_WFI }, + /* L1 cache lockdown. Not architectural in v6 and earlier but in practice + * implemented in 926, 946, 1026, 1136, 1176 and 11MPCore. StrongARM and + * OMAPCP will override this space. + */ + { .name = "DLOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 0, + .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_data), + .resetvalue = 0 }, + { .name = "ILOCKDOWN", .cp = 15, .crn = 9, .crm = 0, .opc1 = 0, .opc2 = 1, + .access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c9_insn), + .resetvalue = 0 }, REGINFO_SENTINEL }; @@ -708,6 +718,9 @@ static const ARMCPRegInfo omap_cp_reginfo[] = { { .name = "OMAP_CACHEMAINT", .cp = 15, .crn = 7, .crm = CP_ANY, .opc1 = 0, .opc2 = CP_ANY, .access = PL1_W, .writefn = omap_cachemaint_write }, + { .name = "C9", .cp = 15, .crn = 9, + .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, + .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, REGINFO_SENTINEL }; @@ -768,6 +781,14 @@ static const ARMCPRegInfo cache_test_clean_cp_reginfo[] = { REGINFO_SENTINEL }; +static const ARMCPRegInfo strongarm_cp_reginfo[] = { + /* Ignore ReadBuffer accesses */ + { .name = "C9_READBUFFER", .cp = 15, .crn = 9, + .crm = CP_ANY, .opc1 = CP_ANY, .opc2 = CP_ANY, + .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 }, + REGINFO_SENTINEL +}; + void register_cp_regs_for_features(ARMCPU *cpu) { /* Register all the coprocessor registers based on feature bits */ @@ -833,6 +854,9 @@ void register_cp_regs_for_features(ARMCPU *cpu) if (arm_feature(env, ARM_FEATURE_OMAPCP)) { define_arm_cp_regs(env, omap_cp_reginfo); } + if (arm_feature(env, ARM_FEATURE_STRONGARM)) { + define_arm_cp_regs(env, strongarm_cp_reginfo); + } if (arm_feature(env, ARM_FEATURE_XSCALE)) { define_arm_cp_regs(env, xscale_cp_reginfo); } @@ -1949,40 +1973,6 @@ void HELPER(set_cp15)(CPUARMState *env, uint32_t insn, uint32_t val) break; case 4: /* Reserved. */ goto bad_reg; - case 9: - if (arm_feature(env, ARM_FEATURE_OMAPCP)) - break; - if (arm_feature(env, ARM_FEATURE_STRONGARM)) - break; /* Ignore ReadBuffer access */ - switch (crm) { - case 0: /* Cache lockdown. */ - switch (op1) { - case 0: /* L1 cache. */ - switch (op2) { - case 0: - env->cp15.c9_data = val; - break; - case 1: - env->cp15.c9_insn = val; - break; - default: - goto bad_reg; - } - break; - case 1: /* L2 cache. */ - /* Ignore writes to L2 lockdown/auxiliary registers. */ - break; - default: - goto bad_reg; - } - break; - case 1: /* TCM memory region registers. */ - /* Not implemented. */ - goto bad_reg; - default: - goto bad_reg; - } - break; case 12: /* Reserved. */ goto bad_reg; } @@ -2122,51 +2112,6 @@ uint32_t HELPER(get_cp15)(CPUARMState *env, uint32_t insn) } case 4: /* Reserved. */ goto bad_reg; - case 9: - switch (crm) { - case 0: /* Cache lockdown */ - switch (op1) { - case 0: /* L1 cache. */ - if (arm_feature(env, ARM_FEATURE_OMAPCP)) { - return 0; - } - switch (op2) { - case 0: - return env->cp15.c9_data; - case 1: - return env->cp15.c9_insn; - default: - goto bad_reg; - } - case 1: /* L2 cache */ - /* L2 Lockdown and Auxiliary control. */ - switch (op2) { - case 0: - /* L2 cache lockdown (A8 only) */ - return 0; - case 2: - /* L2 cache auxiliary control (A8) or control (A15) */ - if (ARM_CPUID(env) == ARM_CPUID_CORTEXA15) { - /* Linux wants the number of processors from here. - * Might as well set the interrupt-controller bit too. - */ - return ((smp_cpus - 1) << 24) | (1 << 23); - } - return 0; - case 3: - /* L2 cache extended control (A15) */ - return 0; - default: - goto bad_reg; - } - default: - goto bad_reg; - } - break; - default: - goto bad_reg; - } - break; case 11: /* TCM DMA control. */ case 12: /* Reserved. */ goto bad_reg; |