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@ -34,6 +34,7 @@
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#endif
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#define SDCARD_SIZE (64 * 1024 * 1024)
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#define SDCARD_BLOCKS (SDCARD_SIZE / SDCARD_BLOCK_SIZE)
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static uint8_t *sdcard_buffer = NULL;
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static secbool sdcard_powered = secfalse;
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@ -103,6 +104,12 @@ secbool sdcard_read_blocks(uint32_t *dest, uint32_t block_num,
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if (sectrue != sdcard_powered) {
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return secfalse;
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}
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if (block_num >= SDCARD_BLOCKS) {
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return secfalse;
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}
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if (num_blocks > SDCARD_BLOCKS - block_num) {
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return secfalse;
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}
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memcpy(dest, sdcard_buffer + block_num * SDCARD_BLOCK_SIZE,
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num_blocks * SDCARD_BLOCK_SIZE);
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return sectrue;
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@ -113,6 +120,12 @@ secbool sdcard_write_blocks(const uint32_t *src, uint32_t block_num,
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if (sectrue != sdcard_powered) {
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return secfalse;
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}
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if (block_num >= SDCARD_BLOCKS) {
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return secfalse;
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}
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if (num_blocks > SDCARD_BLOCKS - block_num) {
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return secfalse;
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}
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memcpy(sdcard_buffer + block_num * SDCARD_BLOCK_SIZE, src,
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num_blocks * SDCARD_BLOCK_SIZE);
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return sectrue;
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