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31740bbb20
commit
2448ddcd4e
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#pragma once |
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int block_is_erased(struct flash_dev *dev, uint32_t addr, uint32_t len); |
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#include <stdint.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <flash.h> |
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#include <macros.h> |
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#include <fs/block.h> |
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int block_is_erased(struct flash_dev *dev, uint32_t addr, uint32_t len) |
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{ |
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char buf[32], cmp[32]; |
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size_t count; |
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memset(cmp, 0xff, sizeof cmp); |
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for (; len; addr += count, len -= count) { |
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count = min(len, sizeof buf); |
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if (flash_read(dev, addr, buf, count) < 0) |
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return -1; |
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if (memcmp(buf, cmp, count) != 0) |
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return -1; |
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} |
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return 0; |
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} |
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