FreeCalypso > hg > freecalypso-tools

annotate loadtools/flutil.c @ 922:3152e23399a2

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document SE K2x0 FFS quirks and our support for them
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 02 Jan 2023 00:50:19 +0000
parents 135de08c5d74
children
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1 /*
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2 * Miscellaneous utility functions for flash support
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <stdint.h>
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8 #include <stdlib.h>
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9 #include "flash.h"
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10
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11 extern struct flash_bank_info flash_bank_info[2];
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12
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13 get_flash_sector_table(bi)
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14 struct flash_bank_info *bi;
0
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15 {
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16 struct flash_geom *geom;
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17 struct flash_region_desc *reg;
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18 struct sector_info *sp;
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19 uint32_t offset;
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20 int nr, i;
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21
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22 if (bi->sectors)
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23 return(0);
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24 geom = bi->geom;
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25 sp = (struct sector_info *) malloc(sizeof(struct sector_info)
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26 * (geom->total_sectors + 1));
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27 if (!sp) {
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28 fprintf(stderr,
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29 "unable to malloc buffer for flash sector table\n");
0
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30 return(-1);
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31 }
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32 bi->sectors = sp;
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33 /* now fill it */
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34 offset = 0;
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35 for (nr = 0; nr < geom->nregions; nr++) {
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36 reg = geom->regions + nr;
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37 for (i = 0; i < reg->nsectors; i++) {
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38 sp->start = offset;
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39 sp->size = reg->sector_size;
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40 sp++;
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41 offset += reg->sector_size;
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42 }
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43 }
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44 /* sanity checks */
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45 if (sp - bi->sectors != geom->total_sectors) {
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46 fprintf(stderr,
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47 "BUG in get_flash_sector_table(): wrong # of sectors at the end\n");
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48 abort();
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49 }
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50 if (offset != geom->total_size) {
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51 fprintf(stderr,
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52 "BUG in get_flash_sector_table(): wrong offset at the end\n");
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53 abort();
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54 }
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55 /* finish */
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56 sp->start = 0;
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57 sp->size = 0;
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58 return(0);
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59 }
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60
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61 flashcmd_sectors(argc, argv, bank)
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62 char **argv;
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63 {
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64 struct flash_bank_info *bi;
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65 struct sector_info *sp;
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66
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67 if (argc > 2) {
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68 fprintf(stderr, "error: too many arguments\n");
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69 return(-1);
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70 }
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71 if (flash_detect(bank, 0) < 0)
0
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72 return(-1);
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73 bi = flash_bank_info + bank;
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74 if (get_flash_sector_table(bi) < 0)
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75 return(-1);
0
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76 printf("%u sectors in flash bank %d:\n", bi->geom->total_sectors, bank);
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77 printf("Offset Size\n");
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78 for (sp = bi->sectors; sp->size; sp++)
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79 printf("%08lX %lx\n", (u_long) sp->start, (u_long) sp->size);
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80 return(0);
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81 }
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82
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83 get_flash_sector_range(bi, useroff, userlen, startp, endp)
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84 struct flash_bank_info *bi;
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85 u_long useroff, userlen;
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86 struct sector_info **startp, **endp;
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87 {
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88 struct sector_info *sp;
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89 uint32_t remlen;
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90
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91 for (sp = bi->sectors; sp->size; sp++)
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92 if (sp->start == useroff)
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93 break;
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94 if (!sp->size) {
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95 fprintf(stderr,
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96 "error: specified offset not aligned to a flash sector boundary\n");
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97 return(-1);
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98 }
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99 *startp = sp;
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100 for (remlen = userlen; remlen; ) {
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101 if (remlen < sp->size) {
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102 fprintf(stderr,
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103 "error: specified length not aligned to a flash sector boundary\n");
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104 return(-1);
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105 }
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106 remlen -= sp->size;
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107 sp++;
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108 }
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109 *endp = sp;
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110 return(0);
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111 }