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target-arm: make CSSELR banked 

Rename CSSELR (cache size selection register) and add secure
instance (AArch32).

Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch>
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1416242878-876-16-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Fabian Aggeler 2014-12-11 12:07:50 +00:00 committed by Peter Maydell
parent 6e8801f9de
commit b85a1fd61c
2 changed files with 20 additions and 4 deletions
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10
target-arm/cpu.h
View File

@ -177,7 +177,15 @@ typedef struct CPUARMState {
/* System control coprocessor (cp15) */
struct {
uint32_t c0_cpuid;
uint64_t c0_cssel; /* Cache size selection. */
union { /* Cache size selection */
struct {
uint64_t _unused_csselr0;
uint64_t csselr_ns;
uint64_t _unused_csselr1;
uint64_t csselr_s;
};
uint64_t csselr_el[4];
};
union { /* System control register. */
struct {
uint64_t _unused_sctlr;

14
target-arm/helper.c
View File

@ -776,7 +776,14 @@ static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
static uint64_t ccsidr_read(CPUARMState *env, const ARMCPRegInfo *ri)
{
ARMCPU *cpu = arm_env_get_cpu(env);
return cpu->ccsidr[env->cp15.c0_cssel];
/* Acquire the CSSELR index from the bank corresponding to the CCSIDR
* bank
*/
uint32_t index = A32_BANKED_REG_GET(env, csselr,
ri->secure & ARM_CP_SECSTATE_S);
return cpu->ccsidr[index];
}
static void csselr_write(CPUARMState *env, const ARMCPRegInfo *ri,
@ -903,8 +910,9 @@ static const ARMCPRegInfo v7_cp_reginfo[] = {
.access = PL1_R, .readfn = ccsidr_read, .type = ARM_CP_NO_MIGRATE },
{ .name = "CSSELR", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .crn = 0, .crm = 0, .opc1 = 2, .opc2 = 0,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.c0_cssel),
.writefn = csselr_write, .resetvalue = 0 },
.access = PL1_RW, .writefn = csselr_write, .resetvalue = 0,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.csselr_s),
offsetof(CPUARMState, cp15.csselr_ns) } },
/* Auxiliary ID register: this actually has an IMPDEF value but for now
* just RAZ for all cores:
*/