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target-arm: make TTBR0/1 banked 

Adds secure and non-secure bank register suport for TTBR0 and TTBR1.
Changes include adding secure and non-secure instances of ttbr0 and ttbr1 as
well as a CP register definition for TTBR0_EL3.  Added a union containing
both EL based array fields and secure and non-secure fields mapped to them.
Updated accesses to use A32_BANKED_CURRENT_REG_GET macro.

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: 1416242878-876-17-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Fabian Aggeler 2014-12-11 12:07:51 +00:00 committed by Peter Maydell
parent b85a1fd61c
commit 7dd8c9af0d
3 changed files with 44 additions and 15 deletions
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2
hw/arm/pxa2xx.c
View File

@ -275,7 +275,7 @@ static void pxa2xx_pwrmode_write(CPUARMState *env, const ARMCPRegInfo *ri,
s->cpu->env.daif = PSTATE_A | PSTATE_F | PSTATE_I;
s->cpu->env.cp15.sctlr_ns = 0;
s->cpu->env.cp15.c1_coproc = 0;
s->cpu->env.cp15.ttbr0_el1 = 0;
s->cpu->env.cp15.ttbr0_el[1] = 0;
s->cpu->env.cp15.c3 = 0;
s->pm_regs[PSSR >> 2] |= 0x8; /* Set STS */
s->pm_regs[RCSR >> 2] |= 0x8; /* Set GPR */

20
target-arm/cpu.h
View File

@ -199,8 +199,24 @@ typedef struct CPUARMState {
uint32_t c1_xscaleauxcr; /* XScale auxiliary control register. */
uint64_t sder; /* Secure debug enable register. */
uint32_t nsacr; /* Non-secure access control register. */
uint64_t ttbr0_el1; /* MMU translation table base 0. */
uint64_t ttbr1_el1; /* MMU translation table base 1. */
union { /* MMU translation table base 0. */
struct {
uint64_t _unused_ttbr0_0;
uint64_t ttbr0_ns;
uint64_t _unused_ttbr0_1;
uint64_t ttbr0_s;
};
uint64_t ttbr0_el[4];
};
union { /* MMU translation table base 1. */
struct {
uint64_t _unused_ttbr1_0;
uint64_t ttbr1_ns;
uint64_t _unused_ttbr1_1;
uint64_t ttbr1_s;
};
uint64_t ttbr1_el[4];
};
uint64_t c2_control; /* MMU translation table base control. */
uint32_t c2_mask; /* MMU translation table base selection mask. */
uint32_t c2_base_mask; /* MMU translation table base 0 mask. */

37
target-arm/helper.c
View File

@ -1646,13 +1646,15 @@ static const ARMCPRegInfo vmsa_cp_reginfo[] = {
.access = PL1_RW,
.fieldoffset = offsetof(CPUARMState, cp15.esr_el[1]), .resetvalue = 0, },
{ .name = "TTBR0_EL1", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 0,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el1),
.writefn = vmsa_ttbr_write, .resetvalue = 0 },
.opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 0,
.access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
offsetof(CPUARMState, cp15.ttbr0_ns) } },
{ .name = "TTBR1_EL1", .state = ARM_CP_STATE_BOTH,
.opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 1,
.access = PL1_RW, .fieldoffset = offsetof(CPUARMState, cp15.ttbr1_el1),
.writefn = vmsa_ttbr_write, .resetvalue = 0 },
.opc0 = 3, .opc1 = 0, .crn = 2, .crm = 0, .opc2 = 1,
.access = PL1_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
offsetof(CPUARMState, cp15.ttbr1_ns) } },
{ .name = "TCR_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .crn = 2, .crm = 0, .opc1 = 0, .opc2 = 2,
.access = PL1_RW, .writefn = vmsa_tcr_el1_write,
@ -1883,11 +1885,13 @@ static const ARMCPRegInfo lpae_cp_reginfo[] = {
.fieldoffset = offsetof(CPUARMState, cp15.par_el1), .resetvalue = 0 },
{ .name = "TTBR0", .cp = 15, .crm = 2, .opc1 = 0,
.access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_NO_MIGRATE,
.fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el1),
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr0_s),
offsetof(CPUARMState, cp15.ttbr0_ns) },
.writefn = vmsa_ttbr_write, .resetfn = arm_cp_reset_ignore },
{ .name = "TTBR1", .cp = 15, .crm = 2, .opc1 = 1,
.access = PL1_RW, .type = ARM_CP_64BIT | ARM_CP_NO_MIGRATE,
.fieldoffset = offsetof(CPUARMState, cp15.ttbr1_el1),
.bank_fieldoffsets = { offsetof(CPUARMState, cp15.ttbr1_s),
offsetof(CPUARMState, cp15.ttbr1_ns) },
.writefn = vmsa_ttbr_write, .resetfn = arm_cp_reset_ignore },
REGINFO_SENTINEL
};
@ -2341,6 +2345,10 @@ static const ARMCPRegInfo v8_el3_cp_reginfo[] = {
.opc0 = 3, .opc1 = 6, .crn = 1, .crm = 0, .opc2 = 0,
.access = PL3_RW, .raw_writefn = raw_write, .writefn = sctlr_write,
.fieldoffset = offsetof(CPUARMState, cp15.sctlr_el[3]) },
{ .name = "TTBR0_EL3", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 6, .crn = 2, .crm = 0, .opc2 = 0,
.access = PL3_RW, .writefn = vmsa_ttbr_write, .resetvalue = 0,
.fieldoffset = offsetof(CPUARMState, cp15.ttbr0_el[3]) },
{ .name = "ELR_EL3", .state = ARM_CP_STATE_AA64,
.type = ARM_CP_NO_MIGRATE,
.opc0 = 3, .opc1 = 6, .crn = 4, .crm = 0, .opc2 = 1,
@ -4442,18 +4450,23 @@ static inline int check_ap(CPUARMState *env, int ap, int domain_prot,
static bool get_level1_table_address(CPUARMState *env, uint32_t *table,
uint32_t address)
{
/* We only get here if EL1 is running in AArch32. If EL3 is running in
* AArch32 there is a secure and non-secure instance of the translation
* table registers.
*/
if (address & env->cp15.c2_mask) {
if ((env->cp15.c2_control & TTBCR_PD1)) {
/* Translation table walk disabled for TTBR1 */
return false;
}
*table = env->cp15.ttbr1_el1 & 0xffffc000;
*table = A32_BANKED_CURRENT_REG_GET(env, ttbr1) & 0xffffc000;
} else {
if ((env->cp15.c2_control & TTBCR_PD0)) {
/* Translation table walk disabled for TTBR0 */
return false;
}
*table = env->cp15.ttbr0_el1 & env->cp15.c2_base_mask;
*table = A32_BANKED_CURRENT_REG_GET(env, ttbr0) &
env->cp15.c2_base_mask;
}
*table |= (address >> 18) & 0x3ffc;
return true;
@ -4758,7 +4771,7 @@ static int get_phys_addr_lpae(CPUARMState *env, target_ulong address,
* we will always flush the TLB any time the ASID is changed).
*/
if (ttbr_select == 0) {
ttbr = env->cp15.ttbr0_el1;
ttbr = A32_BANKED_CURRENT_REG_GET(env, ttbr0);
epd = extract32(env->cp15.c2_control, 7, 1);
tsz = t0sz;
@ -4770,7 +4783,7 @@ static int get_phys_addr_lpae(CPUARMState *env, target_ulong address,
granule_sz = 11;
}
} else {
ttbr = env->cp15.ttbr1_el1;
ttbr = A32_BANKED_CURRENT_REG_GET(env, ttbr1);
epd = extract32(env->cp15.c2_control, 23, 1);
tsz = t1sz;