diff options
Diffstat (limited to 'include/lib/el3_runtime/cpu_data.h')
| -rw-r--r-- | include/lib/el3_runtime/cpu_data.h | 73 |
1 files changed, 61 insertions, 12 deletions
diff --git a/include/lib/el3_runtime/cpu_data.h b/include/lib/el3_runtime/cpu_data.h index 3d57a5c59..2c7b61967 100644 --- a/include/lib/el3_runtime/cpu_data.h +++ b/include/lib/el3_runtime/cpu_data.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014-2021, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2014-2021, Arm Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -19,16 +19,25 @@ /* 8-bytes aligned size of psci_cpu_data structure */ #define PSCI_CPU_DATA_SIZE_ALIGNED ((PSCI_CPU_DATA_SIZE + 7) & ~7) +#if ENABLE_RME +/* Size of cpu_context array */ +#define CPU_DATA_CONTEXT_NUM 3 /* Offset of cpu_ops_ptr, size 8 bytes */ +#define CPU_DATA_CPU_OPS_PTR 0x18 +#else /* ENABLE_RME */ +#define CPU_DATA_CONTEXT_NUM 2 #define CPU_DATA_CPU_OPS_PTR 0x10 +#endif /* ENABLE_RME */ #if ENABLE_PAUTH /* 8-bytes aligned offset of apiakey[2], size 16 bytes */ -#define CPU_DATA_APIAKEY_OFFSET (0x18 + PSCI_CPU_DATA_SIZE_ALIGNED) -#define CPU_DATA_CRASH_BUF_OFFSET (CPU_DATA_APIAKEY_OFFSET + 0x10) -#else -#define CPU_DATA_CRASH_BUF_OFFSET (0x18 + PSCI_CPU_DATA_SIZE_ALIGNED) -#endif /* ENABLE_PAUTH */ +#define CPU_DATA_APIAKEY_OFFSET (0x8 + PSCI_CPU_DATA_SIZE_ALIGNED \ + + CPU_DATA_CPU_OPS_PTR) +#define CPU_DATA_CRASH_BUF_OFFSET (0x10 + CPU_DATA_APIAKEY_OFFSET) +#else /* ENABLE_PAUTH */ +#define CPU_DATA_CRASH_BUF_OFFSET (0x8 + PSCI_CPU_DATA_SIZE_ALIGNED \ + + CPU_DATA_CPU_OPS_PTR) +#endif /* ENABLE_PAUTH */ /* need enough space in crash buffer to save 8 registers */ #define CPU_DATA_CRASH_BUF_SIZE 64 @@ -65,11 +74,14 @@ #ifndef __ASSEMBLER__ +#include <assert.h> +#include <stdint.h> + #include <arch_helpers.h> #include <lib/cassert.h> #include <lib/psci/psci.h> + #include <platform_def.h> -#include <stdint.h> /* Offsets for the cpu_data structure */ #define CPU_DATA_PSCI_LOCK_OFFSET __builtin_offsetof\ @@ -80,27 +92,34 @@ (cpu_data_t, platform_cpu_data) #endif +typedef enum context_pas { + CPU_CONTEXT_SECURE = 0, + CPU_CONTEXT_NS, +#if ENABLE_RME + CPU_CONTEXT_REALM, +#endif + CPU_CONTEXT_NUM +} context_pas_t; + /******************************************************************************* * Function & variable prototypes ******************************************************************************/ /******************************************************************************* * Cache of frequently used per-cpu data: - * Pointers to non-secure and secure security state contexts + * Pointers to non-secure, realm, and secure security state contexts * Address of the crash stack * It is aligned to the cache line boundary to allow efficient concurrent * manipulation of these pointers on different cpus * - * TODO: Add other commonly used variables to this (tf_issues#90) - * * The data structure and the _cpu_data accessors should not be used directly * by components that have per-cpu members. The member access macros should be * used for this. ******************************************************************************/ typedef struct cpu_data { #ifdef __aarch64__ - void *cpu_context[2]; -#endif + void *cpu_context[CPU_DATA_CONTEXT_NUM]; +#endif /* __aarch64__ */ uintptr_t cpu_ops_ptr; struct psci_cpu_data psci_svc_cpu_data; #if ENABLE_PAUTH @@ -122,6 +141,11 @@ typedef struct cpu_data { extern cpu_data_t percpu_data[PLATFORM_CORE_COUNT]; +#ifdef __aarch64__ +CASSERT(CPU_DATA_CONTEXT_NUM == CPU_CONTEXT_NUM, + assert_cpu_data_context_num_mismatch); +#endif + #if ENABLE_PAUTH CASSERT(CPU_DATA_APIAKEY_OFFSET == __builtin_offsetof (cpu_data_t, apiakey), @@ -160,6 +184,31 @@ static inline struct cpu_data *_cpu_data(void) struct cpu_data *_cpu_data(void); #endif +/* + * Returns the index of the cpu_context array for the given security state. + * All accesses to cpu_context should be through this helper to make sure + * an access is not out-of-bounds. The function assumes security_state is + * valid. + */ +static inline context_pas_t get_cpu_context_index(uint32_t security_state) +{ + if (security_state == SECURE) { + return CPU_CONTEXT_SECURE; + } else { +#if ENABLE_RME + if (security_state == NON_SECURE) { + return CPU_CONTEXT_NS; + } else { + assert(security_state == REALM); + return CPU_CONTEXT_REALM; + } +#else + assert(security_state == NON_SECURE); + return CPU_CONTEXT_NS; +#endif + } +} + /************************************************************************** * APIs for initialising and accessing per-cpu data *************************************************************************/ |