Merge "fix(cpus): workaround for Neoverse V2 erratum 2801372" into integration
diff --git a/include/arch/aarch32/arch.h b/include/arch/aarch32/arch.h
index dd2c0a6..da4ee7f 100644
--- a/include/arch/aarch32/arch.h
+++ b/include/arch/aarch32/arch.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2016-2023, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2023, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -197,11 +197,11 @@
#define SDCR_SPD_LEGACY U(0x0)
#define SDCR_SPD_DISABLE U(0x2)
#define SDCR_SPD_ENABLE U(0x3)
-#define SDCR_SCCD_BIT (U(1) << 23)
-#define SDCR_TTRF_BIT (U(1) << 19)
#define SDCR_SPME_BIT (U(1) << 17)
-#define SDCR_RESET_VAL U(0x0)
+#define SDCR_TTRF_BIT (U(1) << 19)
+#define SDCR_SCCD_BIT (U(1) << 23)
#define SDCR_MTPME_BIT (U(1) << 28)
+#define SDCR_RESET_VAL U(0x0)
/* HSCTLR definitions */
#define HSCTLR_RES1 ((U(1) << 29) | (U(1) << 28) | (U(1) << 23) | \
diff --git a/include/arch/aarch64/arch.h b/include/arch/aarch64/arch.h
index 698fad4..b19e8af 100644
--- a/include/arch/aarch64/arch.h
+++ b/include/arch/aarch64/arch.h
@@ -596,7 +596,7 @@
#define MDCR_SBRBE_MASK ULL(0x3)
#define MDCR_NSTB(x) ((x) << 24)
#define MDCR_NSTB_EL1 ULL(0x3)
-#define MDCR_NSTBE (ULL(1) << 26)
+#define MDCR_NSTBE_BIT (ULL(1) << 26)
#define MDCR_MTPME_BIT (ULL(1) << 28)
#define MDCR_TDCC_BIT (ULL(1) << 27)
#define MDCR_SCCD_BIT (ULL(1) << 23)
@@ -612,6 +612,7 @@
#define MDCR_SPD32_ENABLE ULL(0x3)
#define MDCR_NSPB(x) ((x) << 12)
#define MDCR_NSPB_EL1 ULL(0x3)
+#define MDCR_NSPBE_BIT (ULL(1) << 11)
#define MDCR_TDOSA_BIT (ULL(1) << 10)
#define MDCR_TDA_BIT (ULL(1) << 9)
#define MDCR_TPM_BIT (ULL(1) << 6)
diff --git a/include/arch/aarch64/el3_common_macros.S b/include/arch/aarch64/el3_common_macros.S
index 6360461..fa9310e 100644
--- a/include/arch/aarch64/el3_common_macros.S
+++ b/include/arch/aarch64/el3_common_macros.S
@@ -115,33 +115,11 @@
* MDCR_EL3.TDA: Set to zero to allow EL0, EL1 and EL2 access to the
* debug registers, other than those registers that are controlled by
* MDCR_EL3.TDOSA.
- *
- * MDCR_EL3.TPM: Set to zero so that EL0, EL1, and EL2 System register
- * accesses to all Performance Monitors registers do not trap to EL3.
- *
- * MDCR_EL3.NSTB, MDCR_EL3.NSTBE: Set to zero so that Trace Buffer
- * owning security state is Secure state. If FEAT_TRBE is implemented,
- * accesses to Trace Buffer control registers at EL2 and EL1 in any
- * security state generates trap exceptions to EL3.
- * If FEAT_TRBE is not implemented, these bits are RES0.
- *
- * MDCR_EL3.TTRF: Set to one so that access to trace filter control
- * registers in non-monitor mode generate EL3 trap exception,
- * unless the access generates a higher priority exception when trace
- * filter control(FEAT_TRF) is implemented.
- * When FEAT_TRF is not implemented, this bit is RES0.
- * ---------------------------------------------------------------------
*/
mov_imm x0, ((MDCR_EL3_RESET_VAL | MDCR_SDD_BIT | \
MDCR_SPD32(MDCR_SPD32_DISABLE)) & \
- ~(MDCR_TDOSA_BIT | MDCR_TDA_BIT | MDCR_TPM_BIT | \
- MDCR_NSTB(MDCR_NSTB_EL1) | MDCR_NSTBE | MDCR_TTRF_BIT))
+ ~(MDCR_TDOSA_BIT | MDCR_TDA_BIT))
- mrs x1, id_aa64dfr0_el1
- ubfx x1, x1, #ID_AA64DFR0_TRACEFILT_SHIFT, #ID_AA64DFR0_TRACEFILT_LENGTH
- cbz x1, 1f
- orr x0, x0, #MDCR_TTRF_BIT
-1:
msr mdcr_el3, x0
/* ---------------------------------------------------------------------
@@ -158,15 +136,6 @@
* CPTR_EL3.TCPAC: Set to zero so that any accesses to CPACR_EL1,
* CPTR_EL2, CPACR, or HCPTR do not trap to EL3.
*
- * CPTR_EL3.TTA: Set to one so that accesses to the trace system
- * registers trap to EL3 from all exception levels and security
- * states when system register trace is implemented.
- * When system register trace is not implemented, this bit is RES0 and
- * hence set to zero.
- *
- * CPTR_EL3.TTA: Set to zero so that System register accesses to the
- * trace registers do not trap to EL3.
- *
* CPTR_EL3.TFP: Set to zero so that accesses to the V- or Z- registers
* by Advanced SIMD, floating-point or SVE instructions (if implemented)
* do not trap to EL3.
@@ -181,12 +150,7 @@
* to EL3 by default.
*/
- mov_imm x0, (CPTR_EL3_RESET_VAL & ~(TCPAC_BIT | TTA_BIT | TFP_BIT))
- mrs x1, id_aa64dfr0_el1
- ubfx x1, x1, #ID_AA64DFR0_TRACEVER_SHIFT, #ID_AA64DFR0_TRACEVER_LENGTH
- cbz x1, 1f
- orr x0, x0, #TTA_BIT
-1:
+ mov_imm x0, (CPTR_EL3_RESET_VAL & ~(TCPAC_BIT | TFP_BIT))
msr cptr_el3, x0
/*
diff --git a/include/lib/extensions/sys_reg_trace.h b/include/lib/extensions/sys_reg_trace.h
index d9f7f1b..beda88a 100644
--- a/include/lib/extensions/sys_reg_trace.h
+++ b/include/lib/extensions/sys_reg_trace.h
@@ -13,6 +13,7 @@
#if __aarch64__
void sys_reg_trace_enable(cpu_context_t *context);
+void sys_reg_trace_disable(cpu_context_t *context);
void sys_reg_trace_init_el2_unused(void);
#else
void sys_reg_trace_init_el3(void);
diff --git a/lib/el3_runtime/aarch64/context_mgmt.c b/lib/el3_runtime/aarch64/context_mgmt.c
index d9ff0b6..9d717bb 100644
--- a/lib/el3_runtime/aarch64/context_mgmt.c
+++ b/lib/el3_runtime/aarch64/context_mgmt.c
@@ -562,6 +562,20 @@
#endif /* IMAGE_BL31 */
}
+/* TODO: move to lib/extensions/pauth when it has been ported to FEAT_STATE */
+static __unused void enable_pauth_el2(void)
+{
+ u_register_t hcr_el2 = read_hcr_el2();
+ /*
+ * For Armv8.3 pointer authentication feature, disable traps to EL2 when
+ * accessing key registers or using pointer authentication instructions
+ * from lower ELs.
+ */
+ hcr_el2 |= (HCR_API_BIT | HCR_APK_BIT);
+
+ write_hcr_el2(hcr_el2);
+}
+
/*******************************************************************************
* Enable architecture extensions in-place at EL2 on first entry to Non-secure
* world when EL2 is empty and unused.
@@ -602,6 +616,10 @@
if (is_feat_sme_supported()) {
sme_init_el2_unused();
}
+
+#if ENABLE_PAUTH
+ enable_pauth_el2();
+#endif /* ENABLE_PAUTH */
#endif /* IMAGE_BL31 */
}
@@ -644,6 +662,11 @@
sme_disable(ctx);
}
}
+
+ /* NS can access this but Secure shouldn't */
+ if (is_feat_sys_reg_trace_supported()) {
+ sys_reg_trace_disable(ctx);
+ }
#endif /* IMAGE_BL31 */
}
@@ -672,6 +695,109 @@
cm_setup_context(ctx, ep);
}
+/* EL2 present but unused, need to disable safely. SCTLR_EL2 can be ignored */
+static __unused void init_nonsecure_el2_unused(cpu_context_t *ctx)
+{
+ u_register_t hcr_el2 = HCR_RESET_VAL;
+ u_register_t mdcr_el2;
+ u_register_t scr_el3;
+
+ scr_el3 = read_ctx_reg(get_el3state_ctx(ctx), CTX_SCR_EL3);
+
+ /* Set EL2 register width: Set HCR_EL2.RW to match SCR_EL3.RW */
+ if ((scr_el3 & SCR_RW_BIT) != 0U) {
+ hcr_el2 |= HCR_RW_BIT;
+ }
+
+ write_hcr_el2(hcr_el2);
+
+ /*
+ * Initialise CPTR_EL2 setting all fields rather than relying on the hw.
+ * All fields have architecturally UNKNOWN reset values.
+ */
+ write_cptr_el2(CPTR_EL2_RESET_VAL);
+
+ /*
+ * Initialise CNTHCTL_EL2. All fields are architecturally UNKNOWN on
+ * reset and are set to zero except for field(s) listed below.
+ *
+ * CNTHCTL_EL2.EL1PTEN: Set to one to disable traps to Hyp mode of
+ * Non-secure EL0 and EL1 accesses to the physical timer registers.
+ *
+ * CNTHCTL_EL2.EL1PCTEN: Set to one to disable traps to Hyp mode of
+ * Non-secure EL0 and EL1 accesses to the physical counter registers.
+ */
+ write_cnthctl_el2(CNTHCTL_RESET_VAL | EL1PCEN_BIT | EL1PCTEN_BIT);
+
+ /*
+ * Initialise CNTVOFF_EL2 to zero as it resets to an architecturally
+ * UNKNOWN value.
+ */
+ write_cntvoff_el2(0);
+
+ /*
+ * Set VPIDR_EL2 and VMPIDR_EL2 to match MIDR_EL1 and MPIDR_EL1
+ * respectively.
+ */
+ write_vpidr_el2(read_midr_el1());
+ write_vmpidr_el2(read_mpidr_el1());
+
+ /*
+ * Initialise VTTBR_EL2. All fields are architecturally UNKNOWN on reset.
+ *
+ * VTTBR_EL2.VMID: Set to zero. Even though EL1&0 stage 2 address
+ * translation is disabled, cache maintenance operations depend on the
+ * VMID.
+ *
+ * VTTBR_EL2.BADDR: Set to zero as EL1&0 stage 2 address translation is
+ * disabled.
+ */
+ write_vttbr_el2(VTTBR_RESET_VAL &
+ ~((VTTBR_VMID_MASK << VTTBR_VMID_SHIFT) |
+ (VTTBR_BADDR_MASK << VTTBR_BADDR_SHIFT)));
+
+ /*
+ * Initialise MDCR_EL2, setting all fields rather than relying on hw.
+ * Some fields are architecturally UNKNOWN on reset.
+ *
+ * MDCR_EL2.TDRA: Set to zero so that Non-secure EL0 and EL1 System
+ * register accesses to the Debug ROM registers are not trapped to EL2.
+ *
+ * MDCR_EL2.TDOSA: Set to zero so that Non-secure EL1 System register
+ * accesses to the powerdown debug registers are not trapped to EL2.
+ *
+ * MDCR_EL2.TDA: Set to zero so that System register accesses to the
+ * debug registers do not trap to EL2.
+ *
+ * MDCR_EL2.TDE: Set to zero so that debug exceptions are not routed to
+ * EL2.
+ */
+ mdcr_el2 = MDCR_EL2_RESET_VAL &
+ ~(MDCR_EL2_TDRA_BIT | MDCR_EL2_TDOSA_BIT | MDCR_EL2_TDA_BIT |
+ MDCR_EL2_TDE_BIT);
+
+ write_mdcr_el2(mdcr_el2);
+
+ /*
+ * Initialise HSTR_EL2. All fields are architecturally UNKNOWN on reset.
+ *
+ * HSTR_EL2.T<n>: Set all these fields to zero so that Non-secure EL0 or
+ * EL1 accesses to System registers do not trap to EL2.
+ */
+ write_hstr_el2(HSTR_EL2_RESET_VAL & ~(HSTR_EL2_T_MASK));
+
+ /*
+ * Initialise CNTHP_CTL_EL2. All fields are architecturally UNKNOWN on
+ * reset.
+ *
+ * CNTHP_CTL_EL2:ENABLE: Set to zero to disable the EL2 physical timer
+ * and prevent timer interrupts.
+ */
+ write_cnthp_ctl_el2(CNTHP_CTL_RESET_VAL & ~(CNTHP_CTL_ENABLE_BIT));
+
+ manage_extensions_nonsecure_el2_unused();
+}
+
/*******************************************************************************
* Prepare the CPU system registers for first entry into realm, secure, or
* normal world.
@@ -683,9 +809,8 @@
******************************************************************************/
void cm_prepare_el3_exit(uint32_t security_state)
{
- u_register_t sctlr_elx, scr_el3, mdcr_el2;
+ u_register_t sctlr_elx, scr_el3;
cpu_context_t *ctx = cm_get_context(security_state);
- uint64_t hcr_el2 = 0U;
assert(ctx != NULL);
@@ -722,121 +847,7 @@
#endif
write_sctlr_el2(sctlr_elx);
} else if (el2_implemented != EL_IMPL_NONE) {
- /*
- * EL2 present but unused, need to disable safely.
- * SCTLR_EL2 can be ignored in this case.
- *
- * Set EL2 register width appropriately: Set HCR_EL2
- * field to match SCR_EL3.RW.
- */
- if ((scr_el3 & SCR_RW_BIT) != 0U)
- hcr_el2 |= HCR_RW_BIT;
-
- /*
- * For Armv8.3 pointer authentication feature, disable
- * traps to EL2 when accessing key registers or using
- * pointer authentication instructions from lower ELs.
- */
- hcr_el2 |= (HCR_API_BIT | HCR_APK_BIT);
-
- write_hcr_el2(hcr_el2);
-
- /*
- * Initialise CPTR_EL2 setting all fields rather than
- * relying on the hw. All fields have architecturally
- * UNKNOWN reset values.
- */
- write_cptr_el2(CPTR_EL2_RESET_VAL);
-
- /*
- * Initialise CNTHCTL_EL2. All fields are
- * architecturally UNKNOWN on reset and are set to zero
- * except for field(s) listed below.
- *
- * CNTHCTL_EL2.EL1PTEN: Set to one to disable traps to
- * Hyp mode of Non-secure EL0 and EL1 accesses to the
- * physical timer registers.
- *
- * CNTHCTL_EL2.EL1PCTEN: Set to one to disable traps to
- * Hyp mode of Non-secure EL0 and EL1 accesses to the
- * physical counter registers.
- */
- write_cnthctl_el2(CNTHCTL_RESET_VAL |
- EL1PCEN_BIT | EL1PCTEN_BIT);
-
- /*
- * Initialise CNTVOFF_EL2 to zero as it resets to an
- * architecturally UNKNOWN value.
- */
- write_cntvoff_el2(0);
-
- /*
- * Set VPIDR_EL2 and VMPIDR_EL2 to match MIDR_EL1 and
- * MPIDR_EL1 respectively.
- */
- write_vpidr_el2(read_midr_el1());
- write_vmpidr_el2(read_mpidr_el1());
-
- /*
- * Initialise VTTBR_EL2. All fields are architecturally
- * UNKNOWN on reset.
- *
- * VTTBR_EL2.VMID: Set to zero. Even though EL1&0 stage
- * 2 address translation is disabled, cache maintenance
- * operations depend on the VMID.
- *
- * VTTBR_EL2.BADDR: Set to zero as EL1&0 stage 2 address
- * translation is disabled.
- */
- write_vttbr_el2(VTTBR_RESET_VAL &
- ~((VTTBR_VMID_MASK << VTTBR_VMID_SHIFT)
- | (VTTBR_BADDR_MASK << VTTBR_BADDR_SHIFT)));
-
- /*
- * Initialise MDCR_EL2, setting all fields rather than
- * relying on hw. Some fields are architecturally
- * UNKNOWN on reset.
- *
- * MDCR_EL2.TDRA: Set to zero so that Non-secure EL0 and
- * EL1 System register accesses to the Debug ROM
- * registers are not trapped to EL2.
- *
- * MDCR_EL2.TDOSA: Set to zero so that Non-secure EL1
- * System register accesses to the powerdown debug
- * registers are not trapped to EL2.
- *
- * MDCR_EL2.TDA: Set to zero so that System register
- * accesses to the debug registers do not trap to EL2.
- *
- * MDCR_EL2.TDE: Set to zero so that debug exceptions
- * are not routed to EL2.
- */
- mdcr_el2 = ((MDCR_EL2_RESET_VAL) &
- ~(MDCR_EL2_TDRA_BIT | MDCR_EL2_TDOSA_BIT |
- MDCR_EL2_TDA_BIT | MDCR_EL2_TDE_BIT));
-
- write_mdcr_el2(mdcr_el2);
-
- /*
- * Initialise HSTR_EL2. All fields are architecturally
- * UNKNOWN on reset.
- *
- * HSTR_EL2.T<n>: Set all these fields to zero so that
- * Non-secure EL0 or EL1 accesses to System registers
- * do not trap to EL2.
- */
- write_hstr_el2(HSTR_EL2_RESET_VAL & ~(HSTR_EL2_T_MASK));
- /*
- * Initialise CNTHP_CTL_EL2. All fields are
- * architecturally UNKNOWN on reset.
- *
- * CNTHP_CTL_EL2:ENABLE: Set to zero to disable the EL2
- * physical timer and prevent timer interrupts.
- */
- write_cnthp_ctl_el2(CNTHP_CTL_RESET_VAL &
- ~(CNTHP_CTL_ENABLE_BIT));
-
- manage_extensions_nonsecure_el2_unused();
+ init_nonsecure_el2_unused(ctx);
}
}
diff --git a/lib/extensions/pmuv3/aarch64/pmuv3.c b/lib/extensions/pmuv3/aarch64/pmuv3.c
index fda71aa..61fc47d 100644
--- a/lib/extensions/pmuv3/aarch64/pmuv3.c
+++ b/lib/extensions/pmuv3/aarch64/pmuv3.c
@@ -82,9 +82,12 @@
* 0 | 1 | enabled | disabled
* 1 | 1 | enabled | disabled only for counters 0 to
* MDCR_EL2.HPMN - 1. Enabled for the rest
+ *
+ * MDCR_EL3.TPM: Set to zero so that EL0, EL1, and EL2 System register
+ * accesses to all Performance Monitors registers do not trap to EL3.
*/
mdcr_el3 = (mdcr_el3 | MDCR_SCCD_BIT | MDCR_MCCD_BIT) &
- ~(MDCR_MPMX_BIT | MDCR_SPME_BIT);
+ ~(MDCR_MPMX_BIT | MDCR_SPME_BIT | MDCR_TPM_BIT);
mdcr_el3 = mtpmu_disable_el3(mdcr_el3);
write_mdcr_el3(mdcr_el3);
diff --git a/lib/extensions/spe/spe.c b/lib/extensions/spe/spe.c
index 236b102..2c25a9d 100644
--- a/lib/extensions/spe/spe.c
+++ b/lib/extensions/spe/spe.c
@@ -26,10 +26,13 @@
uint64_t v;
/*
- * MDCR_EL2.NSPB (ARM v8.2): SPE enabled in Non-secure state
+ * MDCR_EL3.NSPB (ARM v8.2): SPE enabled in Non-secure state
* and disabled in secure state. Accesses to SPE registers at
* S-EL1 generate trap exceptions to EL3.
*
+ * MDCR_EL3.NSPBE: Profiling Buffer uses Non-secure Virtual Addresses.
+ * When FEAT_RME is not implemented, this field is RES0.
+ *
* MDCR_EL3.EnPMSN (ARM v8.7): Do not trap access to PMSNEVFR_EL1
* register at NS-EL1 or NS-EL2 to EL3 if FEAT_SPEv1p2 is implemented.
* Setting this bit to 1 doesn't have any effect on it when
@@ -37,6 +40,7 @@
*/
v = read_mdcr_el3();
v |= MDCR_NSPB(MDCR_NSPB_EL1) | MDCR_EnPMSN_BIT;
+ v &= ~(MDCR_NSPBE_BIT);
write_mdcr_el3(v);
}
diff --git a/lib/extensions/sys_reg_trace/aarch64/sys_reg_trace.c b/lib/extensions/sys_reg_trace/aarch64/sys_reg_trace.c
index 4b57f67..1349566 100644
--- a/lib/extensions/sys_reg_trace/aarch64/sys_reg_trace.c
+++ b/lib/extensions/sys_reg_trace/aarch64/sys_reg_trace.c
@@ -12,16 +12,26 @@
void sys_reg_trace_enable(cpu_context_t *ctx)
{
- uint64_t val;
+ /*
+ * CPTR_EL3.TTA: Set to zero so that System register accesses to the
+ * trace registers do not trap to EL3.
+ */
+ uint64_t val = read_ctx_reg(get_el3state_ctx(ctx), CTX_CPTR_EL3);
+
+ val &= ~(TTA_BIT);
+ write_ctx_reg(get_el3state_ctx(ctx), CTX_CPTR_EL3, val);
+}
- /* Retrieve CPTR_EL3 value from the given context 'ctx',
- * and update CPTR_EL3.TTA bit to 0.
- * This function is called while switching context to NS to
- * allow system trace register access to NS-EL2 and NS-EL1
- * when NS-EL2 is implemented but not used.
+void sys_reg_trace_disable(cpu_context_t *ctx)
+{
+ /*
+ * CPTR_EL3.TTA: Set to one so that System register accesses to the
+ * trace registers trap to EL3, unless it is trapped by CPACR.TRCDIS,
+ * CPACR_EL1.TTA, or CPTR_EL2.TTA
*/
- val = read_ctx_reg(get_el3state_ctx(ctx), CTX_CPTR_EL3);
- val &= ~TTA_BIT;
+ uint64_t val = read_ctx_reg(get_el3state_ctx(ctx), CTX_CPTR_EL3);
+
+ val |= TTA_BIT;
write_ctx_reg(get_el3state_ctx(ctx), CTX_CPTR_EL3, val);
}
diff --git a/lib/extensions/trbe/trbe.c b/lib/extensions/trbe/trbe.c
index 461ea73..d4fbdfb 100644
--- a/lib/extensions/trbe/trbe.c
+++ b/lib/extensions/trbe/trbe.c
@@ -24,13 +24,18 @@
u_register_t val;
/*
+ * MDCR_EL3.NSTBE = 0b0
+ * Trace Buffer owning Security state is Non-secure state. If FEAT_RME
+ * is not implemented, this field is RES0.
+ *
* MDCR_EL3.NSTB = 0b11
- * Allow access of trace buffer control registers from NS-EL1
- * and NS-EL2, tracing is prohibited in Secure and Realm state
- * (if implemented).
+ * Allow access of trace buffer control registers from NS-EL1 and
+ * NS-EL2, tracing is prohibited in Secure and Realm state (if
+ * implemented).
*/
val = read_mdcr_el3();
val |= MDCR_NSTB(MDCR_NSTB_EL1);
+ val &= ~(MDCR_NSTBE_BIT);
write_mdcr_el3(val);
}
diff --git a/lib/extensions/trf/aarch32/trf.c b/lib/extensions/trf/aarch32/trf.c
index e13b4db..321c089 100644
--- a/lib/extensions/trf/aarch32/trf.c
+++ b/lib/extensions/trf/aarch32/trf.c
@@ -16,9 +16,9 @@
/*
* Allow access of trace filter control registers from
- * non-monitor mode
+ * non-monitor mode.
*/
val = read_sdcr();
- val &= ~SDCR_TTRF_BIT;
+ val &= ~(SDCR_TTRF_BIT);
write_sdcr(val);
}
diff --git a/lib/extensions/trf/aarch64/trf.c b/lib/extensions/trf/aarch64/trf.c
index f681b28..83fbf85 100644
--- a/lib/extensions/trf/aarch64/trf.c
+++ b/lib/extensions/trf/aarch64/trf.c
@@ -14,12 +14,16 @@
u_register_t val;
/*
+ * MDCR_EL3.STE = b0
+ * Trace prohibited in Secure state unless overridden by the
+ * IMPLEMENTATION DEFINED authentication interface.
+ *
* MDCR_EL3.TTRF = b0
* Allow access of trace filter control registers from NS-EL2
* and NS-EL1 when NS-EL2 is implemented but not used
*/
val = read_mdcr_el3();
- val &= ~MDCR_TTRF_BIT;
+ val &= ~(MDCR_STE_BIT | MDCR_TTRF_BIT);
write_mdcr_el3(val);
}
diff --git a/lib/psci/psci_common.c b/lib/psci/psci_common.c
index 8aa0cce..70bf77e 100644
--- a/lib/psci/psci_common.c
+++ b/lib/psci/psci_common.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013-2022, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2023, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -1037,6 +1037,13 @@
psci_cpu_suspend_finish(cpu_idx, &state_info);
/*
+ * Generic management: Now we just need to retrieve the
+ * information that we had stashed away during the cpu_on
+ * call to set this cpu on its way.
+ */
+ cm_prepare_el3_exit_ns();
+
+ /*
* Set the requested and target state of this CPU and all the higher
* power domains which are ancestors of this CPU to run.
*/
diff --git a/lib/psci/psci_on.c b/lib/psci/psci_on.c
index 76eb50c..1f619ae 100644
--- a/lib/psci/psci_on.c
+++ b/lib/psci/psci_on.c
@@ -225,11 +225,4 @@
/* Populate the mpidr field within the cpu node array */
/* This needs to be done only once */
psci_cpu_pd_nodes[cpu_idx].mpidr = read_mpidr() & MPIDR_AFFINITY_MASK;
-
- /*
- * Generic management: Now we just need to retrieve the
- * information that we had stashed away during the cpu_on
- * call to set this cpu on its way.
- */
- cm_prepare_el3_exit_ns();
}
diff --git a/lib/psci/psci_suspend.c b/lib/psci/psci_suspend.c
index d93e60d..cb12b83 100644
--- a/lib/psci/psci_suspend.c
+++ b/lib/psci/psci_suspend.c
@@ -367,11 +367,4 @@
psci_set_suspend_pwrlvl(PSCI_INVALID_PWR_LVL);
PUBLISH_EVENT(psci_suspend_pwrdown_finish);
-
- /*
- * Generic management: Now we just need to retrieve the
- * information that we had stashed away during the suspend
- * call to set this cpu on its way.
- */
- cm_prepare_el3_exit_ns();
}
diff --git a/services/std_svc/rmmd/rmmd_main.c b/services/std_svc/rmmd/rmmd_main.c
index c80b524..a929ea2 100644
--- a/services/std_svc/rmmd/rmmd_main.c
+++ b/services/std_svc/rmmd/rmmd_main.c
@@ -128,6 +128,11 @@
sve_enable(ctx);
}
+ /* NS can access this but Realm shouldn't */
+ if (is_feat_sys_reg_trace_supported()) {
+ sys_reg_trace_disable(ctx);
+ }
+
pmuv3_enable(ctx);
}