21 lines
No EOL
542 B
C
21 lines
No EOL
542 B
C
#include "fat.h"
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#include "ata.h"
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#include "panic.h"
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void load_fat() {
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read_sectors(FAT_INFO->reserved_sectors, FAT_INFO->sectors_per_fat, FAT);
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}
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uint16_t get_cluster(uint16_t n) {
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uint32_t t = *(uint32_t *)(FAT + (n / 2) * 3);
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return (n % 2 ? (t >> 12) : t) & 0xfff;
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}
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void set_cluster(uint16_t n, uint16_t v) {
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uint32_t *t = (uint32_t *)(FAT + (n / 2) * 3);
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*t = (*t & (n % 2 ? 0xff000fff : 0xfffff000)) | (n % 2 ? v << 12 : v);
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}
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uint16_t get_start_cluster(uint8_t *path) {
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panic("Not implemented (get_start_cluster).");
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} |