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target-arm: make PAR banked 

When EL3 is running in AArch32 (or ARMv7 with Security Extensions)
PAR has a secure and a non-secure instance.

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: 1416242878-876-23-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Fabian Aggeler 2014-12-11 12:07:52 +00:00 committed by Peter Maydell
parent b848ce2b9c
commit 01c097f796
2 changed files with 22 additions and 11 deletions
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10
target-arm/cpu.h
View File

@ -279,7 +279,15 @@ typedef struct CPUARMState {
};
uint64_t far_el[4];
};
uint64_t par_el1; /* Translation result. */
union { /* Translation result. */
struct {
uint64_t _unused_par_0;
uint64_t par_ns;
uint64_t _unused_par_1;
uint64_t par_s;
};
uint64_t par_el[4];
};
uint32_t c9_insn; /* Cache lockdown registers. */
uint32_t c9_data;
uint64_t c9_pmcr; /* performance monitor control register */

23
target-arm/helper.c
View File

@ -1404,6 +1404,7 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
int prot;
int ret, is_user = ri->opc2 & 2;
int access_type = ri->opc2 & 1;
uint64_t par64;
ret = get_phys_addr(env, value, access_type, is_user,
&phys_addr, &prot, &page_size);
@ -1412,7 +1413,7 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
* translation table format, but with WnR always clear.
* Convert it to a 64-bit PAR.
*/
uint64_t par64 = (1 << 11); /* LPAE bit always set */
par64 = (1 << 11); /* LPAE bit always set */
if (ret == 0) {
par64 |= phys_addr & ~0xfffULL;
/* We don't set the ATTR or SH fields in the PAR. */
@ -1424,7 +1425,6 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
* fault.
*/
}
env->cp15.par_el1 = par64;
} else {
/* ret is a DFSR/IFSR value for the short descriptor
* translation table format (with WnR always clear).
@ -1434,23 +1434,25 @@ static void ats_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
/* We do not set any attribute bits in the PAR */
if (page_size == (1 << 24)
&& arm_feature(env, ARM_FEATURE_V7)) {
env->cp15.par_el1 = (phys_addr & 0xff000000) | 1 << 1;
par64 = (phys_addr & 0xff000000) | (1 << 1);
} else {
env->cp15.par_el1 = phys_addr & 0xfffff000;
par64 = phys_addr & 0xfffff000;
}
} else {
env->cp15.par_el1 = ((ret & (1 << 10)) >> 5) |
((ret & (1 << 12)) >> 6) |
((ret & 0xf) << 1) | 1;
par64 = ((ret & (1 << 10)) >> 5) | ((ret & (1 << 12)) >> 6) |
((ret & 0xf) << 1) | 1;
}
}
A32_BANKED_CURRENT_REG_SET(env, par, par64);
}
#endif
static const ARMCPRegInfo vapa_cp_reginfo[] = {
{ .name = "PAR", .cp = 15, .crn = 7, .crm = 4, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .resetvalue = 0,
.fieldoffset = offsetoflow32(CPUARMState, cp15.par_el1),
.bank_fieldoffsets = { offsetoflow32(CPUARMState, cp15.par_s),
offsetoflow32(CPUARMState, cp15.par_ns) },
.writefn = par_write },
#ifndef CONFIG_USER_ONLY
{ .name = "ATS", .cp = 15, .crn = 7, .crm = 8, .opc1 = 0, .opc2 = CP_ANY,
@ -1903,8 +1905,9 @@ static const ARMCPRegInfo lpae_cp_reginfo[] = {
.access = PL1_RW, .type = ARM_CP_CONST | ARM_CP_OVERRIDE,
.resetvalue = 0 },
{ .name = "PAR", .cp = 15, .crm = 7, .opc1 = 0,
.access = PL1_RW, .type = ARM_CP_64BIT,
.fieldoffset = offsetof(CPUARMState, cp15.par_el1), .resetvalue = 0 },
.access = PL1_RW, .type = ARM_CP_64BIT, .resetvalue = 0,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.par_s),
offsetof(CPUARMState, cp15.par_ns)} },
{ .name = "TTBR0", .cp = 15, .crm = 2, .opc1 = 0,
.access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_NO_MIGRATE,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),