The RMM (Realm Management Monitor) provides functionality that can be accessed by SMC calls from the host. The SMC definitions are based on DEN0137[1] version 1.0-eac5 [1] https://developer.arm.com/documentation/den0137/1-0eac5/ Signed-off-by: Steven Price <steven.price@xxxxxxx> --- Changes since v2: * Fix specification link. * Rename rec_entry->rec_enter to match spec. * Fix size of pmu_ovf_status to match spec. --- arch/arm64/include/asm/rmi_smc.h | 251 +++++++++++++++++++++++++++++++ 1 file changed, 251 insertions(+) create mode 100644 arch/arm64/include/asm/rmi_smc.h diff --git a/arch/arm64/include/asm/rmi_smc.h b/arch/arm64/include/asm/rmi_smc.h new file mode 100644 index 000000000000..fb8d9025c6e9 --- /dev/null +++ b/arch/arm64/include/asm/rmi_smc.h @@ -0,0 +1,251 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023-2024 ARM Ltd. + * + * The values and structures in this file are from the Realm Management Monitor + * specification (DEN0137) version 1.0 EAC5: + * https://developer.arm.com/documentation/den0137/1-0eac5/ + */ + +#ifndef __ASM_RME_SMC_H +#define __ASM_RME_SMC_H + +#include <linux/arm-smccc.h> + +#define SMC_RxI_CALL(func) \ + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \ + ARM_SMCCC_SMC_64, \ + ARM_SMCCC_OWNER_STANDARD, \ + (func)) + +#define SMC_RMI_DATA_CREATE SMC_RxI_CALL(0x0153) +#define SMC_RMI_DATA_CREATE_UNKNOWN SMC_RxI_CALL(0x0154) +#define SMC_RMI_DATA_DESTROY SMC_RxI_CALL(0x0155) +#define SMC_RMI_FEATURES SMC_RxI_CALL(0x0165) +#define SMC_RMI_GRANULE_DELEGATE SMC_RxI_CALL(0x0151) +#define SMC_RMI_GRANULE_UNDELEGATE SMC_RxI_CALL(0x0152) +#define SMC_RMI_PSCI_COMPLETE SMC_RxI_CALL(0x0164) +#define SMC_RMI_REALM_ACTIVATE SMC_RxI_CALL(0x0157) +#define SMC_RMI_REALM_CREATE SMC_RxI_CALL(0x0158) +#define SMC_RMI_REALM_DESTROY SMC_RxI_CALL(0x0159) +#define SMC_RMI_REC_AUX_COUNT SMC_RxI_CALL(0x0167) +#define SMC_RMI_REC_CREATE SMC_RxI_CALL(0x015a) +#define SMC_RMI_REC_DESTROY SMC_RxI_CALL(0x015b) +#define SMC_RMI_REC_ENTER SMC_RxI_CALL(0x015c) +#define SMC_RMI_RTT_CREATE SMC_RxI_CALL(0x015d) +#define SMC_RMI_RTT_DESTROY SMC_RxI_CALL(0x015e) +#define SMC_RMI_RTT_FOLD SMC_RxI_CALL(0x0166) +#define SMC_RMI_RTT_INIT_RIPAS SMC_RxI_CALL(0x0168) +#define SMC_RMI_RTT_MAP_UNPROTECTED SMC_RxI_CALL(0x015f) +#define SMC_RMI_RTT_READ_ENTRY SMC_RxI_CALL(0x0161) +#define SMC_RMI_RTT_SET_RIPAS SMC_RxI_CALL(0x0169) +#define SMC_RMI_RTT_UNMAP_UNPROTECTED SMC_RxI_CALL(0x0162) +#define SMC_RMI_VERSION SMC_RxI_CALL(0x0150) + +#define RMI_ABI_MAJOR_VERSION 1 +#define RMI_ABI_MINOR_VERSION 0 + +#define RMI_UNASSIGNED 0 +#define RMI_ASSIGNED 1 +#define RMI_TABLE 2 + +#define RMI_ABI_VERSION_GET_MAJOR(version) ((version) >> 16) +#define RMI_ABI_VERSION_GET_MINOR(version) ((version) & 0xFFFF) +#define RMI_ABI_VERSION(major, minor) (((major) << 16) | (minor)) + +#define RMI_RETURN_STATUS(ret) ((ret) & 0xFF) +#define RMI_RETURN_INDEX(ret) (((ret) >> 8) & 0xFF) + +#define RMI_SUCCESS 0 +#define RMI_ERROR_INPUT 1 +#define RMI_ERROR_REALM 2 +#define RMI_ERROR_REC 3 +#define RMI_ERROR_RTT 4 + +#define RMI_EMPTY 0 +#define RMI_RAM 1 +#define RMI_DESTROYED 2 + +#define RMI_NO_MEASURE_CONTENT 0 +#define RMI_MEASURE_CONTENT 1 + +#define RMI_FEATURE_REGISTER_0_S2SZ GENMASK(7, 0) +#define RMI_FEATURE_REGISTER_0_LPA2 BIT(8) +#define RMI_FEATURE_REGISTER_0_SVE_EN BIT(9) +#define RMI_FEATURE_REGISTER_0_SVE_VL GENMASK(13, 10) +#define RMI_FEATURE_REGISTER_0_NUM_BPS GENMASK(17, 14) +#define RMI_FEATURE_REGISTER_0_NUM_WPS GENMASK(21, 18) +#define RMI_FEATURE_REGISTER_0_PMU_EN BIT(22) +#define RMI_FEATURE_REGISTER_0_PMU_NUM_CTRS GENMASK(27, 23) +#define RMI_FEATURE_REGISTER_0_HASH_SHA_256 BIT(28) +#define RMI_FEATURE_REGISTER_0_HASH_SHA_512 BIT(29) + +#define RMI_REALM_PARAM_FLAG_LPA2 BIT(0) +#define RMI_REALM_PARAM_FLAG_SVE BIT(1) +#define RMI_REALM_PARAM_FLAG_PMU BIT(2) + +/* + * Note many of these fields are smaller than u64 but all fields have u64 + * alignment, so use u64 to ensure correct alignment. + */ +struct realm_params { + union { /* 0x0 */ + struct { + u64 flags; + u64 s2sz; + u64 sve_vl; + u64 num_bps; + u64 num_wps; + u64 pmu_num_ctrs; + u64 hash_algo; + }; + u8 padding_1[0x400]; + }; + union { /* 0x400 */ + u8 rpv[64]; + u8 padding_2[0x400]; + }; + union { /* 0x800 */ + struct { + u64 vmid; + u64 rtt_base; + s64 rtt_level_start; + u64 rtt_num_start; + }; + u8 padding_3[0x800]; + }; +}; + +/* + * The number of GPRs (starting from X0) that are + * configured by the host when a REC is created. + */ +#define REC_CREATE_NR_GPRS 8 + +#define REC_PARAMS_FLAG_RUNNABLE BIT_ULL(0) + +#define REC_PARAMS_AUX_GRANULES 16 + +struct rec_params { + union { /* 0x0 */ + u64 flags; + u8 padding1[0x100]; + }; + union { /* 0x100 */ + u64 mpidr; + u8 padding2[0x100]; + }; + union { /* 0x200 */ + u64 pc; + u8 padding3[0x100]; + }; + union { /* 0x300 */ + u64 gprs[REC_CREATE_NR_GPRS]; + u8 padding4[0x500]; + }; + union { /* 0x800 */ + struct { + u64 num_rec_aux; + u64 aux[REC_PARAMS_AUX_GRANULES]; + }; + u8 padding5[0x800]; + }; +}; + +#define RMI_EMULATED_MMIO BIT(0) +#define RMI_INJECT_SEA BIT(1) +#define RMI_TRAP_WFI BIT(2) +#define RMI_TRAP_WFE BIT(3) +#define RMI_RIPAS_RESPONSE BIT(4) + +#define REC_RUN_GPRS 31 +#define REC_GIC_NUM_LRS 16 + +struct rec_enter { + union { /* 0x000 */ + u64 flags; + u8 padding0[0x200]; + }; + union { /* 0x200 */ + u64 gprs[REC_RUN_GPRS]; + u8 padding2[0x100]; + }; + union { /* 0x300 */ + struct { + u64 gicv3_hcr; + u64 gicv3_lrs[REC_GIC_NUM_LRS]; + }; + u8 padding3[0x100]; + }; + u8 padding4[0x400]; +}; + +#define RMI_EXIT_SYNC 0x00 +#define RMI_EXIT_IRQ 0x01 +#define RMI_EXIT_FIQ 0x02 +#define RMI_EXIT_PSCI 0x03 +#define RMI_EXIT_RIPAS_CHANGE 0x04 +#define RMI_EXIT_HOST_CALL 0x05 +#define RMI_EXIT_SERROR 0x06 + +struct rec_exit { + union { /* 0x000 */ + u8 exit_reason; + u8 padding0[0x100]; + }; + union { /* 0x100 */ + struct { + u64 esr; + u64 far; + u64 hpfar; + }; + u8 padding1[0x100]; + }; + union { /* 0x200 */ + u64 gprs[REC_RUN_GPRS]; + u8 padding2[0x100]; + }; + union { /* 0x300 */ + struct { + u64 gicv3_hcr; + u64 gicv3_lrs[REC_GIC_NUM_LRS]; + u64 gicv3_misr; + u64 gicv3_vmcr; + }; + u8 padding3[0x100]; + }; + union { /* 0x400 */ + struct { + u64 cntp_ctl; + u64 cntp_cval; + u64 cntv_ctl; + u64 cntv_cval; + }; + u8 padding4[0x100]; + }; + union { /* 0x500 */ + struct { + u64 ripas_base; + u64 ripas_top; + u64 ripas_value; + }; + u8 padding5[0x100]; + }; + union { /* 0x600 */ + u16 imm; + u8 padding6[0x100]; + }; + union { /* 0x700 */ + struct { + u8 pmu_ovf_status; + }; + u8 padding7[0x100]; + }; +}; + +struct rec_run { + struct rec_enter enter; + struct rec_exit exit; +}; + +#endif -- 2.34.1
