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Implement ARMv7 cp15 cache ID registers. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6105 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2008-12-19 13:37:53 +00:00
parent fe1479c3ad
commit a49ea279c4
2 changed files with 28 additions and 7 deletions
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3
target-arm/cpu.h
View File

@ -100,6 +100,9 @@ typedef struct CPUARMState {
struct {
uint32_t c0_cpuid;
uint32_t c0_cachetype;
uint32_t c0_ccsid[16]; /* Cache size. */
uint32_t c0_clid; /* Cache level. */
uint32_t c0_cssel; /* Cache size selection. */
uint32_t c0_c1[8]; /* Feature registers. */
uint32_t c0_c2[8]; /* Instruction set registers. */
uint32_t c1_sys; /* System control register. */

32
target-arm/helper.c
View File

@ -94,7 +94,11 @@ static void cpu_reset_model_id(CPUARMState *env, uint32_t id)
env->vfp.xregs[ARM_VFP_MVFR1] = 0x00011100;
memcpy(env->cp15.c0_c1, cortexa8_cp15_c0_c1, 8 * sizeof(uint32_t));
memcpy(env->cp15.c0_c2, cortexa8_cp15_c0_c2, 8 * sizeof(uint32_t));
env->cp15.c0_cachetype = 0x1dd20d2;
env->cp15.c0_cachetype = 0x82048004;
env->cp15.c0_clid = (1 << 27) | (2 << 24) | 3;
env->cp15.c0_ccsid[0] = 0xe007e01a; /* 16k L1 dcache. */
env->cp15.c0_ccsid[1] = 0x2007e01a; /* 16k L1 icache. */
env->cp15.c0_ccsid[2] = 0xf0000000; /* No L2 icache. */
break;
case ARM_CPUID_CORTEXM3:
set_feature(env, ARM_FEATURE_V6);
@ -1321,15 +1325,16 @@ void HELPER(set_cp15)(CPUState *env, uint32_t insn, uint32_t val)
crm = insn & 0xf;
switch ((insn >> 16) & 0xf) {
case 0:
if (((insn >> 21) & 7) == 2) {
/* ??? Select cache level. Ignore. */
return;
}
/* 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 1: /* System configuration. */
if (arm_feature(env, ARM_FEATURE_OMAPCP))
@ -1648,9 +1653,22 @@ uint32_t HELPER(get_cp15)(CPUState *env, uint32_t insn)
goto bad_reg;
if (crm != 0)
goto bad_reg;
if (arm_feature(env, ARM_FEATURE_XSCALE))
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 0;
return env->cp15.c0_cssel;
default:
goto bad_reg;
}