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annotate loadtools/flashops.c @ 405:a212b4968b29

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fc-loadtool flash: another refactoring: geometry vs. command set
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Tue, 17 Jun 2014 00:33:05 +0000
parents
children f2cc551e597f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
405
a212b4968b29 fc-loadtool flash: another refactoring: geometry vs. command set
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
a212b4968b29 fc-loadtool flash: another refactoring: geometry vs. command set
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2 * This module implements those flash operations which are dependent
a212b4968b29 fc-loadtool flash: another refactoring: geometry vs. command set
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3 * on the AMD vs. Intel command set style.
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4 */
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5
a212b4968b29 fc-loadtool flash: another refactoring: geometry vs. command set
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6 #include <sys/types.h>
a212b4968b29 fc-loadtool flash: another refactoring: geometry vs. command set
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7 #include <stdio.h>
a212b4968b29 fc-loadtool flash: another refactoring: geometry vs. command set
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8 #include <stdint.h>
a212b4968b29 fc-loadtool flash: another refactoring: geometry vs. command set
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9 #include <stdlib.h>
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10 #include <time.h>
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11 #include "flash.h"
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12
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13 /* common stub functions */
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14
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15 static
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16 noop()
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17 {
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18 return(0);
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19 }
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20
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21 static
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22 invalid()
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23 {
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24 fprintf(stderr,
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25 "This operation is not applicable to the selected flash type\n");
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26 return(-1);
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27 }
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28
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29 /* AMD flash functions */
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30
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31 amd_reset_cmd(bi)
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32 struct flash_bank_info *bi;
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33 {
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34 if (do_w16(bi->base_addr + 0xAAA, 0xF0)) {
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35 fprintf(stderr,
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36 "unexpected response to w16 when resetting flash to read mode!\n");
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37 return(-1);
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38 }
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39 return(0);
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40 }
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41
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42 amd_sector_erase(bi, sp)
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43 struct flash_bank_info *bi;
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44 struct sector_info *sp;
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45 {
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46 int stat;
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47 uint16_t flstat;
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48 time_t start_time, curtime;
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49
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50 stat = do_w16(bi->base_addr + sp->start + 0xAAA, 0xAA);
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51 if (stat) {
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52 bad_w16: fprintf(stderr,
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53 "unexpected response to w16 in erase cmd sequence - aborting\n");
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54 return(-1);
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55 }
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56 stat = do_w16(bi->base_addr + sp->start + 0x554, 0x55);
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57 if (stat)
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58 goto bad_w16;
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59 stat = do_w16(bi->base_addr + sp->start + 0xAAA, 0x80);
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60 if (stat)
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61 goto bad_w16;
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62 stat = do_w16(bi->base_addr + sp->start + 0xAAA, 0xAA);
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63 if (stat)
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64 goto bad_w16;
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65 stat = do_w16(bi->base_addr + sp->start + 0x554, 0x55);
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66 if (stat)
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67 goto bad_w16;
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68 stat = do_w16(bi->base_addr + sp->start + 0xAAA, 0x30);
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69 if (stat)
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70 goto bad_w16;
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71 start_time = time(0);
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72 for (;;) {
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73 stat = do_r16(bi->base_addr + sp->start, &flstat);
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74 if (stat)
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75 return(stat); /* error msg already printed */
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76 if (flstat == 0xFFFF)
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77 return(0);
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78 curtime = time(0);
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79 if (curtime >= start_time + 20) {
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80 fprintf(stderr, "erase timeout, aborting\n");
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81 return(-1);
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82 }
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83 }
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84 }
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85
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86 struct flash_cmdset flash_cmdset_amd = {
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87 .cmdset_name = "AMD",
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88 .reset_cmd = amd_reset_cmd,
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89 .status_cmd = invalid,
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90 .unlock_sector = invalid,
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91 .erase_sector = amd_sector_erase,
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92 .prep_for_program = noop,
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93 .loadagent_setbase_cmd = "AMFB",
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94 .loadagent_program_cmd = "AMFW",
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95 };