annotate loadtools/flash.h @ 248:cb1ba53a1106

beginning of factored-out libserial
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 21 Sep 2017 21:43:34 +0000
parents e7502631a0f9
children 0dd2c87c1b63
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1 /* this header file contains definitions for fc-loadtool flash support */
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2
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3 /*
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4 * The following structures represent an "abstract"
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5 * description of flash devices.
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6 *
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7 * A "region" is a consecutive group of erase units of the same size.
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8 */
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9
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10 struct flash_region_desc {
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11 uint32_t sector_size;
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12 unsigned nsectors;
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13 };
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14
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15 #define CFI_MAX_REGIONS 4
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16
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17 /*
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18 * The info in struct flash_geom can be either
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19 * gathered from CFI or hard-coded.
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20 */
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21 struct flash_geom {
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22 uint32_t total_size;
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23 unsigned nregions;
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24 struct flash_region_desc regions[CFI_MAX_REGIONS];
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25 unsigned total_sectors;
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26 };
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27
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28 struct flash_idcheck {
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29 uint16_t offset;
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30 uint16_t expect_val;
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31 };
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32
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33 struct flash_bank_desc {
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34 uint32_t align_size;
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35 struct flash_geom *geom;
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36 struct flash_idcheck *idcheck_table;
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37 unsigned idcheck_num;
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38 };
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39
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40 struct flash_device_desc {
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41 char *name;
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42 struct flash_bank_desc *bank_desc;
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43 unsigned nbanks;
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44 struct flash_cmdset *cmdset;
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45 };
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46
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47 /* the following structures describe flash banks as accessible to us */
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48
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49 struct sector_info {
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50 uint32_t start;
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51 uint32_t size;
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52 };
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53
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54 struct flash_cmdset {
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55 char *cmdset_name;
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56 int (*reset_cmd)();
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57 int (*status_cmd)();
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58 int (*unlock_sector)();
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59 int (*erase_sector)();
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60 int (*prep_for_program)();
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61 char *loadagent_setbase_cmd;
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62 char *loadagent_program_cmd;
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63 int needs_unlock;
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64 };
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65
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66 struct flash_bank_info {
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67 uint32_t base_addr;
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68 struct flash_bank_desc *bank_desc;
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69 struct flash_geom *geom;
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70 struct flash_cmdset *ops;
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71 struct sector_info *sectors;
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72 int idcheck_done;
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73 };