35 lines
931 B
C
35 lines
931 B
C
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <riscv-pk/encoding.h>
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#include "marchid.h"
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#define OBUS_OFFSET (0x1L << 32)
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char src[] = "This is a test string. It will be written into the off-chip memory address, then copied back.";
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char dest[4096];
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char test[4096];
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int main(void) {
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size_t write_start = rdcycle();
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memcpy(dest + OBUS_OFFSET, src, sizeof(src));
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size_t write_end = rdcycle();
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printf("Wrote %ld bytes in %ld cycles\n", sizeof(src), write_end - write_start);
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size_t read_start = rdcycle();
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memcpy(test, dest + OBUS_OFFSET, sizeof(src));
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size_t read_end = rdcycle();
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for (int i = 0; i < sizeof(src); i++) {
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if (src[i] != test[i]) {
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printf("Remote write/read failed at %p %p %p %x %x\n", src+i, test+i, dest + OBUS_OFFSET + i, src[i], test[i]);
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exit(1);
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}
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}
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printf("Read %ld bytes in %ld cycles\n", sizeof(src), read_end - read_start);
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return 0;
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}
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