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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1702 | - | 1 | /* |
| 2 | * Simple tool to dump the AP_Var contents from an EEPROM dump |
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| 3 | */ |
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| 4 | #include <stdio.h> |
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| 5 | #include <stdlib.h> |
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| 6 | #include <stdint.h> |
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| 7 | |||
| 8 | uint8_t eeprom[0x1000]; |
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| 9 | |||
| 10 | #pragma pack(1) |
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| 11 | |||
| 12 | struct EEPROM_header { |
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| 13 | uint16_t magic; |
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| 14 | uint8_t revision; |
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| 15 | uint8_t spare; |
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| 16 | }; |
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| 17 | |||
| 18 | static const uint16_t k_EEPROM_magic = 0x5041; |
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| 19 | static const uint16_t k_EEPROM_revision = 2; |
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| 20 | |||
| 21 | struct Var_header { |
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| 22 | uint8_t size:6; |
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| 23 | uint8_t spare:2; |
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| 24 | uint8_t key; |
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| 25 | }; |
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| 26 | |||
| 27 | static const uint8_t k_key_sentinel = 0xff; |
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| 28 | |||
| 29 | void |
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| 30 | fail(const char *why) |
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| 31 | { |
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| 32 | fprintf(stderr, "ERROR: %s\n", why); |
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| 33 | exit(1); |
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| 34 | } |
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| 35 | |||
| 36 | int |
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| 37 | main(int argc, char *argv[]) |
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| 38 | { |
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| 39 | FILE *fp; |
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| 40 | struct EEPROM_header *header; |
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| 41 | struct Var_header *var; |
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| 42 | unsigned index; |
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| 43 | unsigned i; |
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| 44 | |||
| 45 | if (argc != 2) { |
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| 46 | fail("missing EEPROM file name"); |
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| 47 | } |
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| 48 | if (NULL == (fp = fopen(argv[1], "rb"))) { |
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| 49 | fail("can't open EEPROM file"); |
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| 50 | } |
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| 51 | if (1 != fread(eeprom, sizeof(eeprom), 1, fp)) { |
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| 52 | fail("can't read EEPROM file"); |
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| 53 | } |
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| 54 | fclose(fp); |
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| 55 | |||
| 56 | header = (struct EEPROM_header *)&eeprom[0]; |
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| 57 | if (header->magic != k_EEPROM_magic) { |
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| 58 | fail("bad magic in EEPROM file"); |
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| 59 | } |
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| 60 | if (header->revision != 2) { |
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| 61 | fail("unsupported EEPROM format revision"); |
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| 62 | } |
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| 63 | printf("Header OK\n"); |
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| 64 | |||
| 65 | index = sizeof(*header); |
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| 66 | for (;;) { |
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| 67 | var = (struct Var_header *)&eeprom[index]; |
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| 68 | if (var->key == k_key_sentinel) { |
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| 69 | printf("end sentinel at %u\n", index); |
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| 70 | break; |
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| 71 | } |
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| 72 | printf("%04x: key %u size %d\n ", index, var->key, var->size + 1); |
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| 73 | index += sizeof(*var); |
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| 74 | for (i = 0; i <= var->size; i++) { |
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| 75 | printf(" %02x", eeprom[index + i]); |
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| 76 | } |
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| 77 | printf("\n"); |
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| 78 | index += var->size + 1; |
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| 79 | if (index >= sizeof(eeprom)) { |
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| 80 | fflush(stdout); |
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| 81 | fail("missing end sentinel"); |
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| 82 | } |
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| 83 | } |
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| 84 | } |