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add weak source of entropy on microblaze to test with

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JacobBarthelmeh
2024-01-03 13:35:00 -08:00
parent 3901fa6a96
commit 3f10496757
1 changed files with 40 additions and 0 deletions
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40
wolfcrypt/src/random.c
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@ -809,6 +809,26 @@ static WC_INLINE word64 Entropy_TimeHiRes(void)
); );
return cnt; return cnt;
} }
#elif !defined(ENTROPY_MEMUSE_THREAD) && defined(__MICROBLAZE__)
#define LPD_SCNTR_BASE_ADDRESS 0xFF250000
/* Get the high resolution time counter.
* Collect ticks from LPD_SCNTR
* @return 64-bit tick count.
*/
static WC_INLINE word64 Entropy_TimeHiRes(void)
{
word64 cnt;
word32 *ptr;
ptr = (word32*)LPD_SCNTR_BASE_ADDRESS;
cnt = *(ptr+1);
cnt = cnt << 32;
cnt |= *ptr;
return cnt;
}
#elif !defined(ENTROPY_MEMUSE_THREAD) && (_POSIX_C_SOURCE >= 199309L) #elif !defined(ENTROPY_MEMUSE_THREAD) && (_POSIX_C_SOURCE >= 199309L)
/* Get the high resolution time counter. /* Get the high resolution time counter.
* *
@ -3515,6 +3535,26 @@ int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
* extern int myRngFunc(byte* output, word32 sz); * extern int myRngFunc(byte* output, word32 sz);
*/ */
#elif defined(__MICROBLAZE__)
#warning weak source of entropy
#define LPD_SCNTR_BASE_ADDRESS 0xFF250000
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
{
word32* cnt;
word32 i;
/* using current time with srand */
cnt = (word32*)LPD_SCNTR_BASE_ADDRESS;
srand(*cnt | *(cnt+1));
for (i = 0; i < sz; i++)
output[i] = rand();
(void)os;
return 0;
}
#elif defined(WOLFSSL_ZEPHYR) #elif defined(WOLFSSL_ZEPHYR)
#include <version.h> #include <version.h>