diff options
Diffstat (limited to 'include/lib/cpus/cpu_ops.h')
| -rw-r--r-- | include/lib/cpus/cpu_ops.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/include/lib/cpus/cpu_ops.h b/include/lib/cpus/cpu_ops.h new file mode 100644 index 0000000..8b36ff1 --- /dev/null +++ b/include/lib/cpus/cpu_ops.h @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2023, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef CPU_OPS_H +#define CPU_OPS_H + +#include <arch.h> + +#define CPU_IMPL_PN_MASK (MIDR_IMPL_MASK << MIDR_IMPL_SHIFT) | \ + (MIDR_PN_MASK << MIDR_PN_SHIFT) + +/* Hardcode to keep compatible with assembly. sizeof(uintptr_t) */ +#if __aarch64__ +#define CPU_WORD_SIZE 8 +#else +#define CPU_WORD_SIZE 4 +#endif /* __aarch64__ */ + +/* The number of CPU operations allowed */ +#define CPU_MAX_PWR_DWN_OPS 2 +/* Special constant to specify that CPU has no reset function */ +#define CPU_NO_RESET_FUNC 0 + +#if __aarch64__ +#define CPU_NO_EXTRA1_FUNC 0 +#define CPU_NO_EXTRA2_FUNC 0 +#define CPU_NO_EXTRA3_FUNC 0 +#endif /* __aarch64__ */ + + +/* + * Define the sizes of the fields in the cpu_ops structure. Word size is set per + * Aarch so keep these definitions the same and each can include whatever it + * needs. + */ +#define CPU_MIDR_SIZE CPU_WORD_SIZE +#ifdef IMAGE_AT_EL3 +#define CPU_RESET_FUNC_SIZE CPU_WORD_SIZE +#else +#define CPU_RESET_FUNC_SIZE 0 +#endif /* IMAGE_AT_EL3 */ +#define CPU_EXTRA1_FUNC_SIZE CPU_WORD_SIZE +#define CPU_EXTRA2_FUNC_SIZE CPU_WORD_SIZE +#define CPU_EXTRA3_FUNC_SIZE CPU_WORD_SIZE +#define CPU_E_HANDLER_FUNC_SIZE CPU_WORD_SIZE +/* The power down core and cluster is needed only in BL31 and BL32 */ +#if defined(IMAGE_BL31) || defined(IMAGE_BL32) +#define CPU_PWR_DWN_OPS_SIZE CPU_WORD_SIZE * CPU_MAX_PWR_DWN_OPS +#else +#define CPU_PWR_DWN_OPS_SIZE 0 +#endif /* defined(IMAGE_BL31) || defined(IMAGE_BL32) */ + +#define CPU_ERRATA_LIST_START_SIZE CPU_WORD_SIZE +#define CPU_ERRATA_LIST_END_SIZE CPU_WORD_SIZE +/* Fields required to print errata status */ +#if REPORT_ERRATA +#define CPU_ERRATA_FUNC_SIZE CPU_WORD_SIZE +#define CPU_CPU_STR_SIZE CPU_WORD_SIZE +/* BL1 doesn't require mutual exclusion and printed flag. */ +#if defined(IMAGE_BL31) || defined(IMAGE_BL32) +#define CPU_ERRATA_LOCK_SIZE CPU_WORD_SIZE +#define CPU_ERRATA_PRINTED_SIZE CPU_WORD_SIZE +#else +#define CPU_ERRATA_LOCK_SIZE 0 +#define CPU_ERRATA_PRINTED_SIZE 0 +#endif /* defined(IMAGE_BL31) || defined(IMAGE_BL32) */ +#else +#define CPU_ERRATA_FUNC_SIZE 0 +#define CPU_CPU_STR_SIZE 0 +#define CPU_ERRATA_LOCK_SIZE 0 +#define CPU_ERRATA_PRINTED_SIZE 0 +#endif /* REPORT_ERRATA */ + +#if defined(IMAGE_BL31) && CRASH_REPORTING +#define CPU_REG_DUMP_SIZE CPU_WORD_SIZE +#else +#define CPU_REG_DUMP_SIZE 0 +#endif /* defined(IMAGE_BL31) && CRASH_REPORTING */ + + +/* + * Define the offsets to the fields in cpu_ops structure. Every offset is + * defined based on the offset and size of the previous field. + */ +#define CPU_MIDR 0 +#define CPU_RESET_FUNC CPU_MIDR + CPU_MIDR_SIZE +#if __aarch64__ +#define CPU_EXTRA1_FUNC CPU_RESET_FUNC + CPU_RESET_FUNC_SIZE +#define CPU_EXTRA2_FUNC CPU_EXTRA1_FUNC + CPU_EXTRA1_FUNC_SIZE +#define CPU_EXTRA3_FUNC CPU_EXTRA2_FUNC + CPU_EXTRA2_FUNC_SIZE +#define CPU_E_HANDLER_FUNC CPU_EXTRA3_FUNC + CPU_EXTRA3_FUNC_SIZE +#define CPU_PWR_DWN_OPS CPU_E_HANDLER_FUNC + CPU_E_HANDLER_FUNC_SIZE +#else +#define CPU_PWR_DWN_OPS CPU_RESET_FUNC + CPU_RESET_FUNC_SIZE +#endif /* __aarch64__ */ +#define CPU_ERRATA_LIST_START CPU_PWR_DWN_OPS + CPU_PWR_DWN_OPS_SIZE +#define CPU_ERRATA_LIST_END CPU_ERRATA_LIST_START + CPU_ERRATA_LIST_START_SIZE +#define CPU_ERRATA_FUNC CPU_ERRATA_LIST_END + CPU_ERRATA_LIST_END_SIZE +#define CPU_CPU_STR CPU_ERRATA_FUNC + CPU_ERRATA_FUNC_SIZE +#define CPU_ERRATA_LOCK CPU_CPU_STR + CPU_CPU_STR_SIZE +#define CPU_ERRATA_PRINTED CPU_ERRATA_LOCK + CPU_ERRATA_LOCK_SIZE +#if __aarch64__ +#define CPU_REG_DUMP CPU_ERRATA_PRINTED + CPU_ERRATA_PRINTED_SIZE +#define CPU_OPS_SIZE CPU_REG_DUMP + CPU_REG_DUMP_SIZE +#else +#define CPU_OPS_SIZE CPU_ERRATA_PRINTED + CPU_ERRATA_PRINTED_SIZE +#endif /* __aarch64__ */ + +#ifndef __ASSEMBLER__ +#include <lib/cassert.h> +#include <lib/spinlock.h> + +struct cpu_ops { + unsigned long midr; +#ifdef IMAGE_AT_EL3 + void (*reset_func)(void); +#endif /* IMAGE_AT_EL3 */ +#if __aarch64__ + void (*extra1_func)(void); + void (*extra2_func)(void); + void (*extra3_func)(void); + void (*e_handler_func)(long es); +#endif /* __aarch64__ */ +#if (defined(IMAGE_BL31) || defined(IMAGE_BL32)) && CPU_MAX_PWR_DWN_OPS + void (*pwr_dwn_ops[CPU_MAX_PWR_DWN_OPS])(void); +#endif /* (defined(IMAGE_BL31) || defined(IMAGE_BL32)) && CPU_MAX_PWR_DWN_OPS */ + void *errata_list_start; + void *errata_list_end; +#if REPORT_ERRATA + void (*errata_func)(void); + char *cpu_str; +#if defined(IMAGE_BL31) || defined(IMAGE_BL32) + spinlock_t *errata_lock; + unsigned int *errata_reported; +#endif /* defined(IMAGE_BL31) || defined(IMAGE_BL32) */ +#endif /* REPORT_ERRATA */ +#if defined(IMAGE_BL31) && CRASH_REPORTING + void (*reg_dump)(void); +#endif /* defined(IMAGE_BL31) && CRASH_REPORTING */ +} __packed; + +CASSERT(sizeof(struct cpu_ops) == CPU_OPS_SIZE, + assert_cpu_ops_asm_c_different_sizes); + +long cpu_get_rev_var(void); +void *get_cpu_ops_ptr(void); + +#endif /* __ASSEMBLER__ */ +#endif /* CPU_OPS_H */ |