diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/common/aarch64/el3_common_macros.S | 6 | ||||
| -rw-r--r-- | include/lib/utils.h | 31 |
2 files changed, 34 insertions, 3 deletions
diff --git a/include/common/aarch64/el3_common_macros.S b/include/common/aarch64/el3_common_macros.S index cbfa6eec..2e70fc2e 100644 --- a/include/common/aarch64/el3_common_macros.S +++ b/include/common/aarch64/el3_common_macros.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: @@ -252,12 +252,12 @@ ldr x0, =__BSS_START__ ldr x1, =__BSS_SIZE__ - bl zeromem16 + bl zeromem #if USE_COHERENT_MEM ldr x0, =__COHERENT_RAM_START__ ldr x1, =__COHERENT_RAM_UNALIGNED_SIZE__ - bl zeromem16 + bl zeromem #endif #ifdef IMAGE_BL1 diff --git a/include/lib/utils.h b/include/lib/utils.h index b6bc9af6..69bbb430 100644 --- a/include/lib/utils.h +++ b/include/lib/utils.h @@ -80,4 +80,35 @@ # define ULL(_x) (_x##ull) #endif +/* + * C code should be put in this part of the header to avoid breaking ASM files + * or linker scripts including it. + */ +#if !(defined(__LINKER__) || defined(__ASSEMBLY__)) + +#include <types.h> + +/* + * Fill a region of normal memory of size "length" in bytes with zero bytes. + * + * WARNING: This function can only operate on normal memory. This means that + * the MMU must be enabled when using this function. Otherwise, use + * zeromem. + */ +void zero_normalmem(void *mem, u_register_t length); + +/* + * Fill a region of memory of size "length" in bytes with null bytes. + * + * Unlike zero_normalmem, this function has no restriction on the type of + * memory targeted and can be used for any device memory as well as normal + * memory. This function must be used instead of zero_normalmem when MMU is + * disabled. + * + * NOTE: When data cache and MMU are enabled, prefer zero_normalmem for faster + * zeroing. + */ +void zeromem(void *mem, u_register_t length); +#endif /* !(defined(__LINKER__) || defined(__ASSEMBLY__)) */ + #endif /* __UTILS_H__ */ |