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annotate loadtools/ltflash.c @ 55:278052b6afda

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loadtools: started laying the foundation for flash support
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 23 Jun 2013 20:13:59 +0000
parents
children d98137625c0d
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55
278052b6afda loadtools: started laying the foundation for flash support
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
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2 * In this module we are going to implement the flash operation commands
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3 * of fc-loadtool.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <stdio.h>
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8 #include <stdint.h>
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9 #include <string.h>
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10 #include <strings.h>
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11 #include <stdlib.h>
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12 #include "flash.h"
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13
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14 /* S{29,71}PL129N device description */
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15
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16 static struct flash_region_desc pl129n_ce1_regions[] = {
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17 /* 4 sectors of 64 KiB each at the beginning, then 256 KiB sectors */
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18 {0x10000, 4},
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19 {0x40000, 31},
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20 {0, 0} /* array terminator */
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21 };
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22
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23 static struct flash_region_desc pl129n_ce2_regions[] = {
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24 /* the other way around now */
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25 {0x40000, 31},
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26 {0x10000, 4},
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27 {0, 0} /* array terminator */
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28 };
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29
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30 static struct flash_bank_desc pl129n_banks[2] = {
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31 {pl129n_ce1_regions, 0xFFFC0000},
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32 {pl129n_ce2_regions, 0xFFFC0000}
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33 };
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34
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35 /* list of supported flash devices */
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36
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37 struct flash_device_desc flash_device_list[] = {
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38 {"pl129n", pl129n_banks, 2},
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39 {0, 0, 0} /* array terminator */
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40 };
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41
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42 /* the following variables describe our selected flash device */
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43
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44 struct flash_device_desc *selected_flash_device;
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45 struct flash_bank_info flash_bank_info[2];
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46
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47 /* called from hwparam.c config file parser */
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48 void
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49 set_flash_device(arg, filename_for_errs, lineno_for_errs)
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50 char *arg;
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51 char *filename_for_errs;
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52 int lineno_for_errs;
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53 {
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54 char *cp, *np, *ep;
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55 struct flash_device_desc *tp;
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56 int bank;
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57
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58 if (selected_flash_device) {
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59 fprintf(stderr, "%s line %d: duplicate flash setting\n",
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60 filename_for_errs, lineno_for_errs);
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61 exit(1);
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62 }
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63 for (cp = arg; isspace(*cp); cp++)
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64 ;
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65 if (!*cp || *cp == '#') {
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66 too_few_arg: fprintf(stderr,
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67 "%s line %d: flash setting: too few arguments\n",
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68 filename_for_errs, lineno_for_errs);
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69 exit(1);
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70 }
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71 for (np = cp; *cp && !isspace(*cp); cp++)
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72 ;
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73 if (*cp)
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74 *cp++ = '\0';
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75 for (tp = flash_device_list; tp->name; tp++)
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76 if (!strcmp(tp->name, np))
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77 break;
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78 if (!tp->name) {
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79 fprintf(stderr,
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80 "%s line %d: unknown flash device \"%s\"\n",
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81 filename_for_errs, lineno_for_errs, np);
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82 exit(1);
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83 }
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84 selected_flash_device = tp;
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85
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86 /* now initialize flash_bank_info */
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87 for (bank = 0; bank < selected_flash_device->nbanks; bank++) {
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88 while (isspace(*cp))
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89 cp++;
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90 if (!*cp || *cp == '#')
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91 goto too_few_arg;
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92 for (np = cp; *cp && !isspace(*cp); cp++)
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93 ;
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94 if (*cp)
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95 *cp++ = '\0';
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96 flash_bank_info[bank].base_addr = strtoul(np, &ep, 16);
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97 if (*ep) {
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98 fprintf(stderr,
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99 "%s line %d: syntax error (base addr expected after flash device type)\n",
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100 filename_for_errs, lineno_for_errs);
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101 exit(1);
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102 }
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103 /* the rest comes from the flash device type */
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104 flash_bank_info[bank].bank_desc =
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105 selected_flash_device->bank_desc + bank;
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106 /* TODO: call function to init total_size and nsectors */
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107 }
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108 while (isspace(*cp))
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109 cp++;
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110 if (*cp && *cp != '#') {
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111 fprintf(stderr,
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112 "%s line %d: flash setting: too many arguments\n",
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113 filename_for_errs, lineno_for_errs);
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114 exit(1);
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115 }
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116 }