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target/arm: Honor the HCR_EL2.TPU bit

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This bit traps EL1 access to cache maintenance insns that operate
to the point of unification.  There are no longer any references to
plain aa64_cacheop_access, so remove it.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200229012811.24129-11-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2020-03-05 16:09:18 +00:00 committed by Peter Maydell
parent 1bed4d2e55
commit 38262d8a73
1 changed files with 32 additions and 21 deletions
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53
target/arm/helper.c
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@ -4301,19 +4301,6 @@ static const ARMCPRegInfo uao_reginfo = {
.readfn = aa64_uao_read, .writefn = aa64_uao_write
};
static CPAccessResult aa64_cacheop_access(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
/* Cache invalidate/clean: NOP, but EL0 must UNDEF unless
* SCTLR_EL1.UCI is set.
*/
if (arm_current_el(env) == 0 && !(arm_sctlr(env, 0) & SCTLR_UCI)) {
return CP_ACCESS_TRAP;
}
return CP_ACCESS_OK;
}
static CPAccessResult aa64_cacheop_poc_access(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
@ -4336,6 +4323,28 @@ static CPAccessResult aa64_cacheop_poc_access(CPUARMState *env,
return CP_ACCESS_OK;
}
static CPAccessResult aa64_cacheop_pou_access(CPUARMState *env,
const ARMCPRegInfo *ri,
bool isread)
{
/* Cache invalidate/clean to Point of Unification... */
switch (arm_current_el(env)) {
case 0:
/* ... EL0 must UNDEF unless SCTLR_EL1.UCI is set. */
if (!(arm_sctlr(env, 0) & SCTLR_UCI)) {
return CP_ACCESS_TRAP;
}
/* fall through */
case 1:
/* ... EL1 must trap to EL2 if HCR_EL2.TPU is set. */
if (arm_hcr_el2_eff(env) & HCR_TPU) {
return CP_ACCESS_TRAP_EL2;
}
break;
}
return CP_ACCESS_OK;
}
/* See: D4.7.2 TLB maintenance requirements and the TLB maintenance instructions
* Page D4-1736 (DDI0487A.b)
*/
@ -4733,14 +4742,16 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
/* Cache ops: all NOPs since we don't emulate caches */
{ .name = "IC_IALLUIS", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0,
.access = PL1_W, .type = ARM_CP_NOP },
.access = PL1_W, .type = ARM_CP_NOP,
.accessfn = aa64_cacheop_pou_access },
{ .name = "IC_IALLU", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0,
.access = PL1_W, .type = ARM_CP_NOP },
.access = PL1_W, .type = ARM_CP_NOP,
.accessfn = aa64_cacheop_pou_access },
{ .name = "IC_IVAU", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 3, .crn = 7, .crm = 5, .opc2 = 1,
.access = PL0_W, .type = ARM_CP_NOP,
.accessfn = aa64_cacheop_access },
.accessfn = aa64_cacheop_pou_access },
{ .name = "DC_IVAC", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 0, .crn = 7, .crm = 6, .opc2 = 1,
.access = PL1_W, .accessfn = aa64_cacheop_poc_access,
@ -4758,7 +4769,7 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
{ .name = "DC_CVAU", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 3, .crn = 7, .crm = 11, .opc2 = 1,
.access = PL0_W, .type = ARM_CP_NOP,
.accessfn = aa64_cacheop_access },
.accessfn = aa64_cacheop_pou_access },
{ .name = "DC_CIVAC", .state = ARM_CP_STATE_AA64,
.opc0 = 1, .opc1 = 3, .crn = 7, .crm = 14, .opc2 = 1,
.access = PL0_W, .type = ARM_CP_NOP,
@ -4932,13 +4943,13 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
.writefn = tlbiipas2_is_write },
/* 32 bit cache operations */
{ .name = "ICIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 0,
.type = ARM_CP_NOP, .access = PL1_W },
.type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_pou_access },
{ .name = "BPIALLUIS", .cp = 15, .opc1 = 0, .crn = 7, .crm = 1, .opc2 = 6,
.type = ARM_CP_NOP, .access = PL1_W },
{ .name = "ICIALLU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 0,
.type = ARM_CP_NOP, .access = PL1_W },
.type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_pou_access },
{ .name = "ICIMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 1,
.type = ARM_CP_NOP, .access = PL1_W },
.type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_pou_access },
{ .name = "BPIALL", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 6,
.type = ARM_CP_NOP, .access = PL1_W },
{ .name = "BPIMVA", .cp = 15, .opc1 = 0, .crn = 7, .crm = 5, .opc2 = 7,
@ -4952,7 +4963,7 @@ static const ARMCPRegInfo v8_cp_reginfo[] = {
{ .name = "DCCSW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 10, .opc2 = 2,
.type = ARM_CP_NOP, .access = PL1_W, .accessfn = access_tsw },
{ .name = "DCCMVAU", .cp = 15, .opc1 = 0, .crn = 7, .crm = 11, .opc2 = 1,
.type = ARM_CP_NOP, .access = PL1_W },
.type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_pou_access },
{ .name = "DCCIMVAC", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 1,
.type = ARM_CP_NOP, .access = PL1_W, .accessfn = aa64_cacheop_poc_access },
{ .name = "DCCISW", .cp = 15, .opc1 = 0, .crn = 7, .crm = 14, .opc2 = 2,