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sys/puf_sram: CPU specific attributes for variables

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This commit is contained in:
PeterKietzmann 2018-11-15 08:54:51 +01:00
parent 1f7ec9b208
commit 0be350e352
2 changed files with 8 additions and 3 deletions
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5
cpu/cortexm_common/include/cpu_conf_common.h
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@ -68,6 +68,11 @@ extern "C" {
#endif #endif
/** @} */ /** @} */
/**
* @brief Attribute for memory sections required by SRAM PUF
*/
#define PUF_SRAM_ATTRIBUTES __attribute__((used, section(".puf")))
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif

6
sys/puf_sram/puf_sram.c
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@ -19,13 +19,13 @@
#include "puf_sram.h" #include "puf_sram.h"
/* Allocation of the PUF seed variable */ /* Allocation of the PUF seed variable */
__attribute__((used,section(".puf"))) uint32_t puf_sram_seed; PUF_SRAM_ATTRIBUTES uint32_t puf_sram_seed;
/* Allocation of the PUF seed state */ /* Allocation of the PUF seed state */
__attribute__((used,section(".puf"))) uint32_t puf_sram_state; PUF_SRAM_ATTRIBUTES uint32_t puf_sram_state;
/* Allocation of the memory marker */ /* Allocation of the memory marker */
__attribute__((used,section(".puf"))) uint32_t puf_sram_marker; PUF_SRAM_ATTRIBUTES uint32_t puf_sram_marker;
void puf_sram_init(const uint8_t *ram, size_t len) void puf_sram_init(const uint8_t *ram, size_t len)
{ {