diff options
Diffstat (limited to 'include/arch/aarch64')
| -rw-r--r-- | include/arch/aarch64/arch.h | 136 | ||||
| -rw-r--r-- | include/arch/aarch64/arch_features.h | 17 | ||||
| -rw-r--r-- | include/arch/aarch64/arch_helpers.h | 43 | ||||
| -rw-r--r-- | include/arch/aarch64/el2_common_macros.S | 422 | ||||
| -rw-r--r-- | include/arch/aarch64/el3_common_macros.S | 63 |
5 files changed, 667 insertions, 14 deletions
diff --git a/include/arch/aarch64/arch.h b/include/arch/aarch64/arch.h index c12dbc4b4..0fb4e7436 100644 --- a/include/arch/aarch64/arch.h +++ b/include/arch/aarch64/arch.h @@ -182,24 +182,44 @@ #define ID_AA64PFR0_CSV2_SHIFT U(56) #define ID_AA64PFR0_CSV2_MASK ULL(0xf) #define ID_AA64PFR0_CSV2_LENGTH U(4) +#define ID_AA64PFR0_FEAT_RME_SHIFT U(52) +#define ID_AA64PFR0_FEAT_RME_MASK ULL(0xf) +#define ID_AA64PFR0_FEAT_RME_LENGTH U(4) +#define ID_AA64PFR0_FEAT_RME_NOT_SUPPORTED U(0) +#define ID_AA64PFR0_FEAT_RME_V1 U(1) /* Exception level handling */ #define EL_IMPL_NONE ULL(0) #define EL_IMPL_A64ONLY ULL(1) #define EL_IMPL_A64_A32 ULL(2) +/* ID_AA64DFR0_EL1.TraceVer definitions */ +#define ID_AA64DFR0_TRACEVER_SHIFT U(4) +#define ID_AA64DFR0_TRACEVER_MASK ULL(0xf) +#define ID_AA64DFR0_TRACEVER_SUPPORTED ULL(1) +#define ID_AA64DFR0_TRACEVER_LENGTH U(4) +#define ID_AA64DFR0_TRACEFILT_SHIFT U(40) +#define ID_AA64DFR0_TRACEFILT_MASK U(0xf) +#define ID_AA64DFR0_TRACEFILT_SUPPORTED U(1) +#define ID_AA64DFR0_TRACEFILT_LENGTH U(4) + /* ID_AA64DFR0_EL1.PMS definitions (for ARMv8.2+) */ #define ID_AA64DFR0_PMS_SHIFT U(32) #define ID_AA64DFR0_PMS_MASK ULL(0xf) +/* ID_AA64DFR0_EL1.TraceBuffer definitions */ +#define ID_AA64DFR0_TRACEBUFFER_SHIFT U(44) +#define ID_AA64DFR0_TRACEBUFFER_MASK ULL(0xf) +#define ID_AA64DFR0_TRACEBUFFER_SUPPORTED ULL(1) + /* ID_AA64DFR0_EL1.MTPMU definitions (for ARMv8.6+) */ #define ID_AA64DFR0_MTPMU_SHIFT U(48) #define ID_AA64DFR0_MTPMU_MASK ULL(0xf) #define ID_AA64DFR0_MTPMU_SUPPORTED ULL(1) /* ID_AA64ISAR0_EL1 definitions */ -#define ID_AA64ISAR0_RNDR_SHIFT U(60) -#define ID_AA64ISAR0_RNDR_MASK ULL(0xf) +#define ID_AA64ISAR0_RNDR_SHIFT U(60) +#define ID_AA64ISAR0_RNDR_MASK ULL(0xf) /* ID_AA64ISAR1_EL1 definitions */ #define ID_AA64ISAR1_EL1 S3_0_C0_C6_1 @@ -266,6 +286,11 @@ #define ID_AA64MMFR1_EL1_VHE_SHIFT U(8) #define ID_AA64MMFR1_EL1_VHE_MASK ULL(0xf) +#define ID_AA64MMFR1_EL1_HCX_SHIFT U(40) +#define ID_AA64MMFR1_EL1_HCX_MASK ULL(0xf) +#define ID_AA64MMFR1_EL1_HCX_SUPPORTED ULL(0x1) +#define ID_AA64MMFR1_EL1_HCX_NOT_SUPPORTED ULL(0x0) + /* ID_AA64MMFR2_EL1 definitions */ #define ID_AA64MMFR2_EL1 S3_0_C0_C7_2 @@ -304,6 +329,9 @@ #define ID_AA64PFR1_MPAM_FRAC_SHIFT ULL(16) #define ID_AA64PFR1_MPAM_FRAC_MASK ULL(0xf) +#define ID_AA64PFR1_EL1_SME_SHIFT U(24) +#define ID_AA64PFR1_EL1_SME_MASK ULL(0xf) + /* ID_PFR1_EL1 definitions */ #define ID_PFR1_VIRTEXT_SHIFT U(12) #define ID_PFR1_VIRTEXT_MASK U(0xf) @@ -363,6 +391,7 @@ #define SCTLR_ITFSB_BIT (ULL(1) << 37) #define SCTLR_TCF0_SHIFT U(38) #define SCTLR_TCF0_MASK ULL(3) +#define SCTLR_ENTP2_BIT (ULL(1) << 60) /* Tag Check Faults in EL0 have no effect on the PE */ #define SCTLR_TCF0_NO_EFFECT U(0) @@ -412,13 +441,20 @@ /* SCR definitions */ #define SCR_RES1_BITS ((U(1) << 4) | (U(1) << 5)) +#define SCR_NSE_SHIFT U(62) +#define SCR_NSE_BIT (ULL(1) << SCR_NSE_SHIFT) +#define SCR_GPF_BIT (UL(1) << 48) #define SCR_TWEDEL_SHIFT U(30) #define SCR_TWEDEL_MASK ULL(0xf) +#define SCR_HXEn_BIT (UL(1) << 38) +#define SCR_ENTP2_SHIFT U(41) +#define SCR_ENTP2_BIT (UL(1) << SCR_ENTP2_SHIFT) #define SCR_AMVOFFEN_BIT (UL(1) << 35) #define SCR_TWEDEn_BIT (UL(1) << 29) #define SCR_ECVEN_BIT (UL(1) << 28) #define SCR_FGTEN_BIT (UL(1) << 27) #define SCR_ATA_BIT (UL(1) << 26) +#define SCR_EnSCXT_BIT (UL(1) << 25) #define SCR_FIEN_BIT (UL(1) << 21) #define SCR_EEL2_BIT (UL(1) << 18) #define SCR_API_BIT (UL(1) << 17) @@ -435,13 +471,16 @@ #define SCR_FIQ_BIT (UL(1) << 2) #define SCR_IRQ_BIT (UL(1) << 1) #define SCR_NS_BIT (UL(1) << 0) -#define SCR_VALID_BIT_MASK U(0x2f8f) +#define SCR_VALID_BIT_MASK U(0x24000002F8F) #define SCR_RESET_VAL SCR_RES1_BITS /* MDCR_EL3 definitions */ #define MDCR_EnPMSN_BIT (ULL(1) << 36) #define MDCR_MPMX_BIT (ULL(1) << 35) #define MDCR_MCCD_BIT (ULL(1) << 34) +#define MDCR_NSTB(x) ((x) << 24) +#define MDCR_NSTB_EL1 ULL(0x3) +#define MDCR_NSTBE (ULL(1) << 26) #define MDCR_MTPME_BIT (ULL(1) << 28) #define MDCR_TDCC_BIT (ULL(1) << 27) #define MDCR_SCCD_BIT (ULL(1) << 23) @@ -465,6 +504,8 @@ /* MDCR_EL2 definitions */ #define MDCR_EL2_MTPME (U(1) << 28) #define MDCR_EL2_HLP (U(1) << 26) +#define MDCR_EL2_E2TB(x) ((x) << 24) +#define MDCR_EL2_E2TB_EL1 U(0x3) #define MDCR_EL2_HCCD (U(1) << 23) #define MDCR_EL2_TTRF (U(1) << 19) #define MDCR_EL2_HPMD (U(1) << 17) @@ -496,13 +537,19 @@ #define VTTBR_BADDR_SHIFT U(0) /* HCR definitions */ -#define HCR_AMVOFFEN_BIT (ULL(1) << 51) +#define HCR_RESET_VAL ULL(0x0) +#define HCR_AMVOFFEN_SHIFT U(51) +#define HCR_AMVOFFEN_BIT (ULL(1) << HCR_AMVOFFEN_SHIFT) +#define HCR_TEA_BIT (ULL(1) << 47) #define HCR_API_BIT (ULL(1) << 41) #define HCR_APK_BIT (ULL(1) << 40) #define HCR_E2H_BIT (ULL(1) << 34) +#define HCR_HCD_BIT (ULL(1) << 29) #define HCR_TGE_BIT (ULL(1) << 27) #define HCR_RW_SHIFT U(31) #define HCR_RW_BIT (ULL(1) << HCR_RW_SHIFT) +#define HCR_TWE_BIT (ULL(1) << 14) +#define HCR_TWI_BIT (ULL(1) << 13) #define HCR_AMO_BIT (ULL(1) << 5) #define HCR_IMO_BIT (ULL(1) << 4) #define HCR_FMO_BIT (ULL(1) << 3) @@ -530,21 +577,32 @@ /* CPTR_EL3 definitions */ #define TCPAC_BIT (U(1) << 31) -#define TAM_BIT (U(1) << 30) +#define TAM_SHIFT U(30) +#define TAM_BIT (U(1) << TAM_SHIFT) #define TTA_BIT (U(1) << 20) +#define ESM_BIT (U(1) << 12) #define TFP_BIT (U(1) << 10) #define CPTR_EZ_BIT (U(1) << 8) -#define CPTR_EL3_RESET_VAL (TCPAC_BIT | TAM_BIT | TTA_BIT | TFP_BIT & ~(CPTR_EZ_BIT)) +#define CPTR_EL3_RESET_VAL ((TCPAC_BIT | TAM_BIT | TTA_BIT | TFP_BIT) & \ + ~(CPTR_EZ_BIT | ESM_BIT)) /* CPTR_EL2 definitions */ #define CPTR_EL2_RES1 ((U(1) << 13) | (U(1) << 12) | (U(0x3ff))) #define CPTR_EL2_TCPAC_BIT (U(1) << 31) -#define CPTR_EL2_TAM_BIT (U(1) << 30) +#define CPTR_EL2_TAM_SHIFT U(30) +#define CPTR_EL2_TAM_BIT (U(1) << CPTR_EL2_TAM_SHIFT) +#define CPTR_EL2_SMEN_MASK ULL(0x3) +#define CPTR_EL2_SMEN_SHIFT U(24) #define CPTR_EL2_TTA_BIT (U(1) << 20) +#define CPTR_EL2_TSM_BIT (U(1) << 12) #define CPTR_EL2_TFP_BIT (U(1) << 10) #define CPTR_EL2_TZ_BIT (U(1) << 8) #define CPTR_EL2_RESET_VAL CPTR_EL2_RES1 +/* VTCR_EL2 definitions */ +#define VTCR_RESET_VAL U(0x0) +#define VTCR_EL2_MSA (U(1) << 31) + /* CPSR/SPSR definitions */ #define DAIF_FIQ_BIT (U(1) << 0) #define DAIF_IRQ_BIT (U(1) << 1) @@ -570,6 +628,7 @@ #define SPSR_M_MASK U(0x1) #define SPSR_M_AARCH64 U(0x0) #define SPSR_M_AARCH32 U(0x1) +#define SPSR_M_EL2H U(0x9) #define SPSR_EL_SHIFT U(2) #define SPSR_EL_WIDTH U(2) @@ -870,6 +929,20 @@ #define ZCR_EL2_LEN_MASK U(0xf) /******************************************************************************* + * Definitions for system register interface to SME as needed in EL3 + ******************************************************************************/ +#define ID_AA64SMFR0_EL1 S3_0_C0_C4_5 +#define SMCR_EL3 S3_6_C1_C2_6 + +/* ID_AA64SMFR0_EL1 definitions */ +#define ID_AA64SMFR0_EL1_FA64_BIT (UL(1) << 63) + +/* SMCR_ELx definitions */ +#define SMCR_ELX_LEN_SHIFT U(0) +#define SMCR_ELX_LEN_MASK U(0x1ff) +#define SMCR_ELX_FA64_BIT (U(1) << 31) + +/******************************************************************************* * Definitions of MAIR encodings for device and normal memory ******************************************************************************/ /* @@ -998,6 +1071,22 @@ #define AMEVTYPER1E_EL0 S3_3_C13_C15_6 #define AMEVTYPER1F_EL0 S3_3_C13_C15_7 +/* AMCNTENSET0_EL0 definitions */ +#define AMCNTENSET0_EL0_Pn_SHIFT U(0) +#define AMCNTENSET0_EL0_Pn_MASK ULL(0xffff) + +/* AMCNTENSET1_EL0 definitions */ +#define AMCNTENSET1_EL0_Pn_SHIFT U(0) +#define AMCNTENSET1_EL0_Pn_MASK ULL(0xffff) + +/* AMCNTENCLR0_EL0 definitions */ +#define AMCNTENCLR0_EL0_Pn_SHIFT U(0) +#define AMCNTENCLR0_EL0_Pn_MASK ULL(0xffff) + +/* AMCNTENCLR1_EL0 definitions */ +#define AMCNTENCLR1_EL0_Pn_SHIFT U(0) +#define AMCNTENCLR1_EL0_Pn_MASK ULL(0xffff) + /* AMCFGR_EL0 definitions */ #define AMCFGR_EL0_NCG_SHIFT U(28) #define AMCFGR_EL0_NCG_MASK U(0xf) @@ -1005,6 +1094,8 @@ #define AMCFGR_EL0_N_MASK U(0xff) /* AMCGCR_EL0 definitions */ +#define AMCGCR_EL0_CG0NC_SHIFT U(0) +#define AMCGCR_EL0_CG0NC_MASK U(0xff) #define AMCGCR_EL0_CG1NC_SHIFT U(8) #define AMCGCR_EL0_CG1NC_MASK U(0xff) @@ -1029,7 +1120,8 @@ #define AMCG1IDR_VOFF_SHIFT U(16) /* New bit added to AMCR_EL0 */ -#define AMCR_CG1RZ_BIT (ULL(0x1) << 17) +#define AMCR_CG1RZ_SHIFT U(17) +#define AMCR_CG1RZ_BIT (ULL(0x1) << AMCR_CG1RZ_SHIFT) /* * Definitions for virtual offset registers for architected activity monitor @@ -1062,6 +1154,12 @@ #define AMEVCNTVOFF1F_EL2 S3_4_C13_C11_7 /******************************************************************************* + * Realm management extension register definitions + ******************************************************************************/ +#define GPCCR_EL3 S3_6_C2_C1_6 +#define GPTBR_EL3 S3_6_C2_C1_4 + +/******************************************************************************* * RAS system registers ******************************************************************************/ #define DISR_EL1 S3_0_C12_C1_1 @@ -1124,6 +1222,16 @@ #define GCR_EL1 S3_0_C1_C0_6 /******************************************************************************* + * FEAT_HCX - Extended Hypervisor Configuration Register + ******************************************************************************/ +#define HCRX_EL2 S3_4_C1_C2_2 +#define HCRX_EL2_FGTnXS_BIT (UL(1) << 4) +#define HCRX_EL2_FnXS_BIT (UL(1) << 3) +#define HCRX_EL2_EnASR_BIT (UL(1) << 2) +#define HCRX_EL2_EnALS_BIT (UL(1) << 1) +#define HCRX_EL2_EnAS0_BIT (UL(1) << 0) + +/******************************************************************************* * Definitions for DynamicIQ Shared Unit registers ******************************************************************************/ #define CLUSTERPWRDN_EL1 S3_0_c15_c3_6 @@ -1133,4 +1241,16 @@ #define DSU_CLUSTER_PWR_ON 1 #define DSU_CLUSTER_PWR_MASK U(1) +/******************************************************************************* + * Definitions for CPU Power/Performance Management registers + ******************************************************************************/ + +#define CPUPPMCR_EL3 S3_6_C15_C2_0 +#define CPUPPMCR_EL3_MPMMPINCTL_SHIFT UINT64_C(0) +#define CPUPPMCR_EL3_MPMMPINCTL_MASK UINT64_C(0x1) + +#define CPUMPMMCR_EL3 S3_6_C15_C2_1 +#define CPUMPMMCR_EL3_MPMM_EN_SHIFT UINT64_C(0) +#define CPUMPMMCR_EL3_MPMM_EN_MASK UINT64_C(0x1) + #endif /* ARCH_H */ diff --git a/include/arch/aarch64/arch_features.h b/include/arch/aarch64/arch_features.h index dc0b7f306..46cd1c982 100644 --- a/include/arch/aarch64/arch_features.h +++ b/include/arch/aarch64/arch_features.h @@ -117,4 +117,21 @@ static inline unsigned int get_mpam_version(void) ID_AA64PFR1_MPAM_FRAC_SHIFT) & ID_AA64PFR1_MPAM_FRAC_MASK)); } +static inline bool is_feat_hcx_present(void) +{ + return (((read_id_aa64mmfr1_el1() >> ID_AA64MMFR1_EL1_HCX_SHIFT) & + ID_AA64MMFR1_EL1_HCX_MASK) == ID_AA64MMFR1_EL1_HCX_SUPPORTED); +} + +static inline unsigned int get_armv9_2_feat_rme_support(void) +{ + /* + * Return the RME version, zero if not supported. This function can be + * used as both an integer value for the RME version or compared to zero + * to detect RME presence. + */ + return (unsigned int)(read_id_aa64pfr0_el1() >> + ID_AA64PFR0_FEAT_RME_SHIFT) & ID_AA64PFR0_FEAT_RME_MASK; +} + #endif /* ARCH_FEATURES_H */ diff --git a/include/arch/aarch64/arch_helpers.h b/include/arch/aarch64/arch_helpers.h index a41b3258e..733bb23c4 100644 --- a/include/arch/aarch64/arch_helpers.h +++ b/include/arch/aarch64/arch_helpers.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013-2021, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2013-2021, Arm Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -233,8 +233,10 @@ void dcsw_op_all(u_register_t op_type); void disable_mmu_el1(void); void disable_mmu_el3(void); +void disable_mpu_el2(void); void disable_mmu_icache_el1(void); void disable_mmu_icache_el3(void); +void disable_mpu_icache_el2(void); /******************************************************************************* * Misc. accessor prototypes @@ -440,6 +442,8 @@ DEFINE_SYSREG_RW_FUNCS(cntp_cval_el0) DEFINE_SYSREG_READ_FUNC(cntpct_el0) DEFINE_SYSREG_RW_FUNCS(cnthctl_el2) +DEFINE_SYSREG_RW_FUNCS(vtcr_el2) + #define get_cntp_ctl_enable(x) (((x) >> CNTP_CTL_ENABLE_SHIFT) & \ CNTP_CTL_ENABLE_MASK) #define get_cntp_ctl_imask(x) (((x) >> CNTP_CTL_IMASK_SHIFT) & \ @@ -505,6 +509,9 @@ DEFINE_RENAME_SYSREG_RW_FUNCS(pmblimitr_el1, PMBLIMITR_EL1) DEFINE_RENAME_SYSREG_WRITE_FUNC(zcr_el3, ZCR_EL3) DEFINE_RENAME_SYSREG_WRITE_FUNC(zcr_el2, ZCR_EL2) +DEFINE_RENAME_SYSREG_READ_FUNC(id_aa64smfr0_el1, ID_AA64SMFR0_EL1) +DEFINE_RENAME_SYSREG_RW_FUNCS(smcr_el3, SMCR_EL3) + DEFINE_RENAME_SYSREG_READ_FUNC(erridr_el1, ERRIDR_EL1) DEFINE_RENAME_SYSREG_WRITE_FUNC(errselr_el1, ERRSELR_EL1) @@ -532,9 +539,20 @@ DEFINE_RENAME_SYSREG_RW_FUNCS(gcr_el1, GCR_EL1) DEFINE_SYSREG_READ_FUNC(rndr) DEFINE_SYSREG_READ_FUNC(rndrrs) +/* FEAT_HCX Register */ +DEFINE_RENAME_SYSREG_RW_FUNCS(hcrx_el2, HCRX_EL2) + /* DynamIQ Shared Unit power management */ DEFINE_RENAME_SYSREG_RW_FUNCS(clusterpwrdn_el1, CLUSTERPWRDN_EL1) +/* CPU Power/Performance Management registers */ +DEFINE_RENAME_SYSREG_RW_FUNCS(cpuppmcr_el3, CPUPPMCR_EL3) +DEFINE_RENAME_SYSREG_RW_FUNCS(cpumpmmcr_el3, CPUMPMMCR_EL3) + +/* Armv9.2 RME Registers */ +DEFINE_RENAME_SYSREG_RW_FUNCS(gptbr_el3, GPTBR_EL3) +DEFINE_RENAME_SYSREG_RW_FUNCS(gpccr_el3, GPCCR_EL3) + #define IS_IN_EL(x) \ (GET_EL(read_CurrentEl()) == MODE_EL##x) @@ -578,7 +596,28 @@ static inline uint64_t el_implemented(unsigned int el) } } -/* Previously defined accesor functions with incomplete register names */ +/* + * TLBIPAALLOS instruction + * (TLB Inivalidate GPT Information by PA, + * All Entries, Outer Shareable) + */ +static inline void tlbipaallos(void) +{ + __asm__("SYS #6,c8,c1,#4"); +} + +/* + * Invalidate cached copies of GPT entries + * from TLBs by physical address + * + * @pa: the starting address for the range + * of invalidation + * @size: size of the range of invalidation + */ +void gpt_tlbi_by_pa(uint64_t pa, size_t size); + + +/* Previously defined accessor functions with incomplete register names */ #define read_current_el() read_CurrentEl() diff --git a/include/arch/aarch64/el2_common_macros.S b/include/arch/aarch64/el2_common_macros.S new file mode 100644 index 000000000..7bf480698 --- /dev/null +++ b/include/arch/aarch64/el2_common_macros.S @@ -0,0 +1,422 @@ +/* + * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef EL2_COMMON_MACROS_S +#define EL2_COMMON_MACROS_S + +#include <arch.h> +#include <asm_macros.S> +#include <context.h> +#include <lib/xlat_tables/xlat_tables_defs.h> + +#include <platform_def.h> + + /* + * Helper macro to initialise system registers at EL2. + */ + .macro el2_arch_init_common + + /* --------------------------------------------------------------------- + * SCTLR_EL2 has already been initialised - read current value before + * modifying. + * + * SCTLR_EL2.I: Enable the instruction cache. + * + * SCTLR_EL2.SA: Enable Stack Alignment check. A SP alignment fault + * exception is generated if a load or store instruction executed at + * EL2 uses the SP as the base address and the SP is not aligned to a + * 16-byte boundary. + * + * SCTLR_EL2.A: Enable Alignment fault checking. All instructions that + * load or store one or more registers have an alignment check that the + * address being accessed is aligned to the size of the data element(s) + * being accessed. + * --------------------------------------------------------------------- + */ + mov x1, #(SCTLR_I_BIT | SCTLR_A_BIT | SCTLR_SA_BIT) + mrs x0, sctlr_el2 + orr x0, x0, x1 + msr sctlr_el2, x0 + isb + + /* --------------------------------------------------------------------- + * Initialise HCR_EL2, setting all fields rather than relying on HW. + * All fields are architecturally UNKNOWN on reset. The following fields + * do not change during the TF lifetime. The remaining fields are set to + * zero here but are updated ahead of transitioning to a lower EL in the + * function cm_init_context_common(). + * + * HCR_EL2.TWE: Set to zero so that execution of WFE instructions at + * EL2, EL1 and EL0 are not trapped to EL2. + * + * HCR_EL2.TWI: Set to zero so that execution of WFI instructions at + * EL2, EL1 and EL0 are not trapped to EL2. + * + * HCR_EL2.HCD: Set to zero to enable HVC calls at EL1 and above, + * from both Security states and both Execution states. + * + * HCR_EL2.TEA: Set to one to route External Aborts and SError + * Interrupts to EL2 when executing at any EL. + * + * HCR_EL2.{API,APK}: For Armv8.3 pointer authentication feature, + * disable traps to EL2 when accessing key registers or using + * pointer authentication instructions from lower ELs. + * --------------------------------------------------------------------- + */ + mov_imm x0, ((HCR_RESET_VAL | HCR_TEA_BIT) \ + & ~(HCR_TWE_BIT | HCR_TWI_BIT | HCR_HCD_BIT)) +#if CTX_INCLUDE_PAUTH_REGS + /* + * If the pointer authentication registers are saved during world + * switches, enable pointer authentication everywhere, as it is safe to + * do so. + */ + orr x0, x0, #(HCR_API_BIT | HCR_APK_BIT) +#endif /* CTX_INCLUDE_PAUTH_REGS */ + msr hcr_el2, x0 + + /* --------------------------------------------------------------------- + * Initialise MDCR_EL2, setting all fields rather than relying on + * hw. Some fields are architecturally UNKNOWN on reset. + * + * MDCR_EL2.TDOSA: Set to zero so that EL2 and EL2 System register + * access to the powerdown debug registers do not trap to EL2. + * + * MDCR_EL2.TDA: Set to zero to allow EL0, EL1 and EL2 access to the + * debug registers, other than those registers that are controlled by + * MDCR_EL2.TDOSA. + * + * MDCR_EL2.TPM: Set to zero so that EL0, EL1, and EL2 System + * register accesses to all Performance Monitors registers do not trap + * to EL2. + * + * MDCR_EL2.HPMD: Set to zero so that event counting by the program- + * mable counters PMEVCNTR<n>_EL0 is prohibited in Secure state. If + * ARMv8.2 Debug is not implemented this bit does not have any effect + * on the counters unless there is support for the implementation + * defined authentication interface + * ExternalSecureNoninvasiveDebugEnabled(). + * --------------------------------------------------------------------- + */ + mov_imm x0, ((MDCR_EL2_RESET_VAL | \ + MDCR_SPD32(MDCR_SPD32_DISABLE)) \ + & ~(MDCR_EL2_HPMD | MDCR_TDOSA_BIT | \ + MDCR_TDA_BIT | MDCR_TPM_BIT)) + + msr mdcr_el2, x0 + + /* --------------------------------------------------------------------- + * Initialise PMCR_EL0 setting all fields rather than relying + * on hw. Some fields are architecturally UNKNOWN on reset. + * + * PMCR_EL0.DP: Set to one so that the cycle counter, + * PMCCNTR_EL0 does not count when event counting is prohibited. + * + * PMCR_EL0.X: Set to zero to disable export of events. + * + * PMCR_EL0.D: Set to zero so that, when enabled, PMCCNTR_EL0 + * counts on every clock cycle. + * --------------------------------------------------------------------- + */ + mov_imm x0, ((PMCR_EL0_RESET_VAL | PMCR_EL0_DP_BIT) & \ + ~(PMCR_EL0_X_BIT | PMCR_EL0_D_BIT)) + + msr pmcr_el0, x0 + + /* --------------------------------------------------------------------- + * Enable External Aborts and SError Interrupts now that the exception + * vectors have been setup. + * --------------------------------------------------------------------- + */ + msr daifclr, #DAIF_ABT_BIT + + /* --------------------------------------------------------------------- + * Initialise CPTR_EL2, setting all fields rather than relying on hw. + * All fields are architecturally UNKNOWN on reset. + * + * CPTR_EL2.TCPAC: Set to zero so that any accesses to CPACR_EL1 do + * not trap to EL2. + * + * CPTR_EL2.TTA: Set to zero so that System register accesses to the + * trace registers do not trap to EL2. + * + * CPTR_EL2.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 EL2. + */ + + mov_imm x0, (CPTR_EL2_RESET_VAL & ~(TCPAC_BIT | TTA_BIT | TFP_BIT)) + msr cptr_el2, x0 + + /* + * If Data Independent Timing (DIT) functionality is implemented, + * always enable DIT in EL2 + */ + mrs x0, id_aa64pfr0_el1 + ubfx x0, x0, #ID_AA64PFR0_DIT_SHIFT, #ID_AA64PFR0_DIT_LENGTH + cmp x0, #ID_AA64PFR0_DIT_SUPPORTED + bne 1f + mov x0, #DIT_BIT + msr DIT, x0 +1: + .endm + +/* ----------------------------------------------------------------------------- + * This is the super set of actions that need to be performed during a cold boot + * or a warm boot in EL2. This code is shared by BL1 and BL31. + * + * This macro will always perform reset handling, architectural initialisations + * and stack setup. The rest of the actions are optional because they might not + * be needed, depending on the context in which this macro is called. This is + * why this macro is parameterised ; each parameter allows to enable/disable + * some actions. + * + * _init_sctlr: + * Whether the macro needs to initialise SCTLR_EL2, including configuring + * the endianness of data accesses. + * + * _warm_boot_mailbox: + * Whether the macro needs to detect the type of boot (cold/warm). The + * detection is based on the platform entrypoint address : if it is zero + * then it is a cold boot, otherwise it is a warm boot. In the latter case, + * this macro jumps on the platform entrypoint address. + * + * _secondary_cold_boot: + * Whether the macro needs to identify the CPU that is calling it: primary + * CPU or secondary CPU. The primary CPU will be allowed to carry on with + * the platform initialisations, while the secondaries will be put in a + * platform-specific state in the meantime. + * + * If the caller knows this macro will only be called by the primary CPU + * then this parameter can be defined to 0 to skip this step. + * + * _init_memory: + * Whether the macro needs to initialise the memory. + * + * _init_c_runtime: + * Whether the macro needs to initialise the C runtime environment. + * + * _exception_vectors: + * Address of the exception vectors to program in the VBAR_EL2 register. + * + * _pie_fixup_size: + * Size of memory region to fixup Global Descriptor Table (GDT). + * + * A non-zero value is expected when firmware needs GDT to be fixed-up. + * + * ----------------------------------------------------------------------------- + */ + .macro el2_entrypoint_common \ + _init_sctlr, _warm_boot_mailbox, _secondary_cold_boot, \ + _init_memory, _init_c_runtime, _exception_vectors, \ + _pie_fixup_size + + .if \_init_sctlr + /* ------------------------------------------------------------- + * This is the initialisation of SCTLR_EL2 and so must ensure + * that all fields are explicitly set rather than relying on hw. + * Some fields reset to an IMPLEMENTATION DEFINED value and + * others are architecturally UNKNOWN on reset. + * + * SCTLR.EE: Set the CPU endianness before doing anything that + * might involve memory reads or writes. Set to zero to select + * Little Endian. + * + * SCTLR_EL2.WXN: For the EL2 translation regime, this field can + * force all memory regions that are writeable to be treated as + * XN (Execute-never). Set to zero so that this control has no + * effect on memory access permissions. + * + * SCTLR_EL2.SA: Set to zero to disable Stack Alignment check. + * + * SCTLR_EL2.A: Set to zero to disable Alignment fault checking. + * + * SCTLR.DSSBS: Set to zero to disable speculation store bypass + * safe behaviour upon exception entry to EL2. + * ------------------------------------------------------------- + */ + mov_imm x0, (SCTLR_RESET_VAL & ~(SCTLR_EE_BIT | SCTLR_WXN_BIT \ + | SCTLR_SA_BIT | SCTLR_A_BIT | SCTLR_DSSBS_BIT)) + msr sctlr_el2, x0 + isb + .endif /* _init_sctlr */ + +#if DISABLE_MTPMU + bl mtpmu_disable +#endif + + .if \_warm_boot_mailbox + /* ------------------------------------------------------------- + * This code will be executed for both warm and cold resets. + * Now is the time to distinguish between the two. + * Query the platform entrypoint address and if it is not zero + * then it means it is a warm boot so jump to this address. + * ------------------------------------------------------------- + */ + bl plat_get_my_entrypoint + cbz x0, do_cold_boot + br x0 + + do_cold_boot: + .endif /* _warm_boot_mailbox */ + + .if \_pie_fixup_size +#if ENABLE_PIE + /* + * ------------------------------------------------------------ + * If PIE is enabled fixup the Global descriptor Table only + * once during primary core cold boot path. + * + * Compile time base address, required for fixup, is calculated + * using "pie_fixup" label present within first page. + * ------------------------------------------------------------ + */ + pie_fixup: + ldr x0, =pie_fixup + and x0, x0, #~(PAGE_SIZE_MASK) + mov_imm x1, \_pie_fixup_size + add x1, x1, x0 + bl fixup_gdt_reloc +#endif /* ENABLE_PIE */ + .endif /* _pie_fixup_size */ + + /* --------------------------------------------------------------------- + * Set the exception vectors. + * --------------------------------------------------------------------- + */ + adr x0, \_exception_vectors + msr vbar_el2, x0 + isb + + /* --------------------------------------------------------------------- + * It is a cold boot. + * Perform any processor specific actions upon reset e.g. cache, TLB + * invalidations etc. + * --------------------------------------------------------------------- + */ + bl reset_handler + + el2_arch_init_common + + .if \_secondary_cold_boot + /* ------------------------------------------------------------- + * Check if this is a primary or secondary CPU cold boot. + * The primary CPU will set up the platform while the + * secondaries are placed in a platform-specific state until the + * primary CPU performs the necessary actions to bring them out + * of that state and allows entry into the OS. + * ------------------------------------------------------------- + */ + bl plat_is_my_cpu_primary + cbnz w0, do_primary_cold_boot + + /* This is a cold boot on a secondary CPU */ + bl plat_secondary_cold_boot_setup + /* plat_secondary_cold_boot_setup() is not supposed to return */ + bl el2_panic + do_primary_cold_boot: + .endif /* _secondary_cold_boot */ + + /* --------------------------------------------------------------------- + * Initialize memory now. Secondary CPU initialization won't get to this + * point. + * --------------------------------------------------------------------- + */ + + .if \_init_memory + bl platform_mem_init + .endif /* _init_memory */ + + /* --------------------------------------------------------------------- + * Init C runtime environment: + * - Zero-initialise the NOBITS sections. There are 2 of them: + * - the .bss section; + * - the coherent memory section (if any). + * - Relocate the data section from ROM to RAM, if required. + * --------------------------------------------------------------------- + */ + .if \_init_c_runtime + adrp x0, __BSS_START__ + add x0, x0, :lo12:__BSS_START__ + + adrp x1, __BSS_END__ + add x1, x1, :lo12:__BSS_END__ + sub x1, x1, x0 + bl zeromem + +#if defined(IMAGE_BL1) || (defined(IMAGE_BL2) && BL2_AT_EL3 && BL2_IN_XIP_MEM) + adrp x0, __DATA_RAM_START__ + add x0, x0, :lo12:__DATA_RAM_START__ + adrp x1, __DATA_ROM_START__ + add x1, x1, :lo12:__DATA_ROM_START__ + adrp x2, __DATA_RAM_END__ + add x2, x2, :lo12:__DATA_RAM_END__ + sub x2, x2, x0 + bl memcpy16 +#endif + .endif /* _init_c_runtime */ + + /* --------------------------------------------------------------------- + * Use SP_EL0 for the C runtime stack. + * --------------------------------------------------------------------- + */ + msr spsel, #0 + + /* --------------------------------------------------------------------- + * Allocate a stack whose memory will be marked as Normal-IS-WBWA when + * the MMU is enabled. There is no risk of reading stale stack memory + * after enabling the MMU as only the primary CPU is running at the + * moment. + * --------------------------------------------------------------------- + */ + bl plat_set_my_stack + +#if STACK_PROTECTOR_ENABLED + .if \_init_c_runtime + bl update_stack_protector_canary + .endif /* _init_c_runtime */ +#endif + .endm + + .macro apply_at_speculative_wa +#if ERRATA_SPECULATIVE_AT + /* + * Explicitly save x30 so as to free up a register and to enable + * branching and also, save x29 which will be used in the called + * function + */ + stp x29, x30, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X29] + bl save_and_update_ptw_el1_sys_regs + ldp x29, x30, [sp, #CTX_GPREGS_OFFSET + CTX_GPREG_X29] +#endif + .endm + + .macro restore_ptw_el1_sys_regs +#if ERRATA_SPECULATIVE_AT + /* ----------------------------------------------------------- + * In case of ERRATA_SPECULATIVE_AT, must follow below order + * to ensure that page table walk is not enabled until + * restoration of all EL1 system registers. TCR_EL1 register + * should be updated at the end which restores previous page + * table walk setting of stage1 i.e.(TCR_EL1.EPDx) bits. ISB + * ensures that CPU does below steps in order. + * + * 1. Ensure all other system registers are written before + * updating SCTLR_EL1 using ISB. + * 2. Restore SCTLR_EL1 register. + * 3. Ensure SCTLR_EL1 written successfully using ISB. + * 4. Restore TCR_EL1 register. + * ----------------------------------------------------------- + */ + isb + ldp x28, x29, [sp, #CTX_EL1_SYSREGS_OFFSET + CTX_SCTLR_EL1] + msr sctlr_el1, x28 + isb + msr tcr_el1, x29 +#endif + .endm + +#endif /* EL2_COMMON_MACROS_S */ diff --git a/include/arch/aarch64/el3_common_macros.S b/include/arch/aarch64/el3_common_macros.S index 973433575..f29def7f3 100644 --- a/include/arch/aarch64/el3_common_macros.S +++ b/include/arch/aarch64/el3_common_macros.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2015-2021, Arm Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -88,6 +88,13 @@ */ orr x0, x0, #(SCR_API_BIT | SCR_APK_BIT) #endif +#if ENABLE_RME + /* + * TODO: Settting the EEL2 bit to allow EL3 access to secure only registers + * in context management. This will need to be refactored. + */ + orr x0, x0, #SCR_EEL2_BIT +#endif msr scr_el3, x0 /* --------------------------------------------------------------------- @@ -126,13 +133,31 @@ * Debug is not implemented this bit does not have any effect on the * counters unless there is support for the implementation defined * authentication interface ExternalSecureNoninvasiveDebugEnabled(). + * + * 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_SCCD_BIT | \ MDCR_MCCD_BIT) & ~(MDCR_SPME_BIT | MDCR_TDOSA_BIT | \ - MDCR_TDA_BIT | MDCR_TPM_BIT)) + MDCR_TDA_BIT | MDCR_TPM_BIT | MDCR_NSTB(MDCR_NSTB_EL1) | \ + MDCR_NSTBE | MDCR_TTRF_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 /* --------------------------------------------------------------------- @@ -179,6 +204,12 @@ * 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. * @@ -191,9 +222,17 @@ * * CPTR_EL3.EZ: Set to zero so that all SVE functionality is trapped * to EL3 by default. + * + * CPTR_EL3.ESM: Set to zero so that all SME functionality is trapped + * 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: msr cptr_el3, x0 /* @@ -336,6 +375,7 @@ msr vbar_el3, x0 isb +#if !(defined(IMAGE_BL2) && ENABLE_RME) /* --------------------------------------------------------------------- * It is a cold boot. * Perform any processor specific actions upon reset e.g. cache, TLB @@ -343,6 +383,7 @@ * --------------------------------------------------------------------- */ bl reset_handler +#endif el3_arch_init_common @@ -385,17 +426,31 @@ * --------------------------------------------------------------------- */ .if \_init_c_runtime -#if defined(IMAGE_BL31) || (defined(IMAGE_BL2) && BL2_AT_EL3 && BL2_INV_DCACHE) +#if defined(IMAGE_BL31) || (defined(IMAGE_BL2) && \ + ((BL2_AT_EL3 && BL2_INV_DCACHE) || ENABLE_RME)) /* ------------------------------------------------------------- * Invalidate the RW memory used by the BL31 image. This * includes the data and NOBITS sections. This is done to * safeguard against possible corruption of this memory by * dirty cache lines in a system cache as a result of use by - * an earlier boot loader stage. + * an earlier boot loader stage. If PIE is enabled however, + * RO sections including the GOT may be modified during + * pie fixup. Therefore, to be on the safe side, invalidate + * the entire image region if PIE is enabled. * ------------------------------------------------------------- */ +#if ENABLE_PIE +#if SEPARATE_CODE_AND_RODATA + adrp x0, __TEXT_START__ + add x0, x0, :lo12:__TEXT_START__ +#else + adrp x0, __RO_START__ + add x0, x0, :lo12:__RO_START__ +#endif /* SEPARATE_CODE_AND_RODATA */ +#else adrp x0, __RW_START__ add x0, x0, :lo12:__RW_START__ +#endif /* ENABLE_PIE */ adrp x1, __RW_END__ add x1, x1, :lo12:__RW_END__ sub x1, x1, x0 |