diff options
Diffstat (limited to 'include/common/bl_common.ld.h')
-rw-r--r-- | include/common/bl_common.ld.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/include/common/bl_common.ld.h b/include/common/bl_common.ld.h index 32c54b4d2..d9e2e015f 100644 --- a/include/common/bl_common.ld.h +++ b/include/common/bl_common.ld.h @@ -7,6 +7,118 @@ #ifndef BL_COMMON_LD_H #define BL_COMMON_LD_H +#include <platform_def.h> + +#ifdef __aarch64__ +#define STRUCT_ALIGN 8 +#else +#define STRUCT_ALIGN 4 +#endif + +#define CPU_OPS \ + . = ALIGN(STRUCT_ALIGN); \ + __CPU_OPS_START__ = .; \ + KEEP(*(cpu_ops)) \ + __CPU_OPS_END__ = .; + +#define PARSER_LIB_DESCS \ + . = ALIGN(STRUCT_ALIGN); \ + __PARSER_LIB_DESCS_START__ = .; \ + KEEP(*(.img_parser_lib_descs)) \ + __PARSER_LIB_DESCS_END__ = .; + +#define RT_SVC_DESCS \ + . = ALIGN(STRUCT_ALIGN); \ + __RT_SVC_DESCS_START__ = .; \ + KEEP(*(rt_svc_descs)) \ + __RT_SVC_DESCS_END__ = .; + +#define PMF_SVC_DESCS \ + . = ALIGN(STRUCT_ALIGN); \ + __PMF_SVC_DESCS_START__ = .; \ + KEEP(*(pmf_svc_descs)) \ + __PMF_SVC_DESCS_END__ = .; + +#define FCONF_POPULATOR \ + . = ALIGN(STRUCT_ALIGN); \ + __FCONF_POPULATOR_START__ = .; \ + KEEP(*(.fconf_populator)) \ + __FCONF_POPULATOR_END__ = .; + +/* + * Keep the .got section in the RO section as it is patched prior to enabling + * the MMU and having the .got in RO is better for security. GOT is a table of + * addresses so ensure pointer size alignment. + */ +#define GOT \ + . = ALIGN(STRUCT_ALIGN); \ + __GOT_START__ = .; \ + *(.got) \ + __GOT_END__ = .; + +#define STACK_SECTION \ + stacks (NOLOAD) : { \ + __STACKS_START__ = .; \ + *(tzfw_normal_stacks) \ + __STACKS_END__ = .; \ + } + +/* + * If BL doesn't use any bakery lock then __PERCPU_BAKERY_LOCK_SIZE__ + * will be zero. For this reason, the only two valid values for + * __PERCPU_BAKERY_LOCK_SIZE__ are 0 or the platform defined value + * PLAT_PERCPU_BAKERY_LOCK_SIZE. + */ +#ifdef PLAT_PERCPU_BAKERY_LOCK_SIZE +#define BAKERY_LOCK_SIZE_CHECK \ + ASSERT((__PERCPU_BAKERY_LOCK_SIZE__ == 0) || \ + (__PERCPU_BAKERY_LOCK_SIZE__ == PLAT_PERCPU_BAKERY_LOCK_SIZE), \ + "PLAT_PERCPU_BAKERY_LOCK_SIZE does not match bakery lock requirements"); +#else +#define BAKERY_LOCK_SIZE_CHECK +#endif + +/* + * Bakery locks are stored in normal .bss memory + * + * Each lock's data is spread across multiple cache lines, one per CPU, + * but multiple locks can share the same cache line. + * The compiler will allocate enough memory for one CPU's bakery locks, + * the remaining cache lines are allocated by the linker script + */ +#if !USE_COHERENT_MEM +#define BAKERY_LOCK_NORMAL \ + . = ALIGN(CACHE_WRITEBACK_GRANULE); \ + __BAKERY_LOCK_START__ = .; \ + __PERCPU_BAKERY_LOCK_START__ = .; \ + *(bakery_lock) \ + . = ALIGN(CACHE_WRITEBACK_GRANULE); \ + __PERCPU_BAKERY_LOCK_END__ = .; \ + __PERCPU_BAKERY_LOCK_SIZE__ = ABSOLUTE(__PERCPU_BAKERY_LOCK_END__ - __PERCPU_BAKERY_LOCK_START__); \ + . = . + (__PERCPU_BAKERY_LOCK_SIZE__ * (PLATFORM_CORE_COUNT - 1)); \ + __BAKERY_LOCK_END__ = .; \ + BAKERY_LOCK_SIZE_CHECK +#else +#define BAKERY_LOCK_NORMAL +#endif + +/* + * Time-stamps are stored in normal .bss memory + * + * The compiler will allocate enough memory for one CPU's time-stamps, + * the remaining memory for other CPUs is allocated by the + * linker script + */ +#define PMF_TIMESTAMP \ + . = ALIGN(CACHE_WRITEBACK_GRANULE); \ + __PMF_TIMESTAMP_START__ = .; \ + KEEP(*(pmf_timestamp_array)) \ + . = ALIGN(CACHE_WRITEBACK_GRANULE); \ + __PMF_PERCPU_TIMESTAMP_END__ = .; \ + __PERCPU_TIMESTAMP_SIZE__ = ABSOLUTE(. - __PMF_TIMESTAMP_START__); \ + . = . + (__PERCPU_TIMESTAMP_SIZE__ * (PLATFORM_CORE_COUNT - 1)); \ + __PMF_TIMESTAMP_END__ = .; + /* * The xlat_table section is for full, aligned page tables (4K). * Removing them from .bss avoids forcing 4K alignment on |