FreeCalypso > hg > freecalypso-tools

annotate loadtools/flash.h @ 998:fb7442e3d430

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CHANGES: mention flash write protection support
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 04 Dec 2023 02:17:54 +0000
parents c5133c3c11b1
children
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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 /* global configuration */
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4 #define FLASH_GLOBAL_CFG_NONE 0
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5 #define FLASH_GLOBAL_CFG_SINGLE_4M 1
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6 #define FLASH_GLOBAL_CFG_SINGLE_8M 2
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7 #define FLASH_GLOBAL_CFG_DUAL_8M 3
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9 /*
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10 * The following structures represent an "abstract"
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11 * description of flash devices.
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12 *
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13 * A "region" is a consecutive group of erase units of the same size.
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14 */
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15
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16 struct flash_region_desc {
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17 uint32_t sector_size;
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18 unsigned nsectors;
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19 };
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21 #define CFI_MAX_REGIONS 4
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22
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23 /*
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24 * The info in struct flash_geom can be either
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25 * gathered from CFI or hard-coded.
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26 */
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27 struct flash_geom {
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28 uint32_t total_size;
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29 unsigned nregions;
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30 struct flash_region_desc regions[CFI_MAX_REGIONS];
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31 unsigned total_sectors;
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32 };
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33
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34 struct cfi_check {
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35 int offset;
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36 uint8_t expect_val;
0
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37 };
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38
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39 /*
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40 * In order to examine non-volatile sector lock state of AMD-style flash
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41 * chips, we need to know how their sectors are grouped for the purpose
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42 * of locking: aggregation of sectors into groups that can only be locked
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43 * or unlocked as a unit, and also grouping into independent-read partitions
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44 * where each partition needs its own Autoselect sequence.
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45 */
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46
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47 struct lock_group_desc {
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48 uint32_t block_size;
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49 unsigned nblocks;
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50 int is_group;
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51 int part_begin;
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52 int part_end;
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53 };
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54
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55 #define MAX_AMD_LOCK_GROUPS 8
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56
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57 struct amd_lock_info {
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58 unsigned ngroups;
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59 struct lock_group_desc groups[MAX_AMD_LOCK_GROUPS];
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60 int have_status_word_3;
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61 int have_status_word_7;
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62 int have_mode_lock_bits;
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63 int have_pln_lock_reg;
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64 int (*ppb_program_one)();
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65 int (*ppb_program_all)();
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66 int (*ppb_erase_all)();
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67 };
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68
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69 struct flash_device {
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70 char *name;
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71 struct cfi_check *cfi_table;
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72 int required_global_config;
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73 struct flash_geom *bank_geom[2];
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74 struct flash_cmdset *cmdset;
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75 struct amd_lock_info *lock_info[2];
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76 };
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77
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78 /* the following structures describe flash banks as accessible to us */
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79
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80 struct sector_info {
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81 uint32_t start;
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82 uint32_t size;
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83 };
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84
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85 struct flash_cmdset {
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86 char *cmdset_name;
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87 int (*reset_cmd)();
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88 int (*status_cmd)();
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89 int (*unlock_sector)();
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90 int (*erase_sector)();
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91 int (*prep_for_program)();
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92 int (*read_prot_reg)();
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93 char *loadagent_setbase_cmd;
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94 char *loadagent_program_cmd;
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95 char *loadagent_binmode_cmd;
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96 int needs_unlock;
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97 };
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98
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99 struct flash_bank_info {
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100 uint32_t base_addr;
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101 struct flash_device *device;
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102 struct flash_geom *geom;
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103 struct flash_cmdset *ops;
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104 struct amd_lock_info *amd_lock;
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105 struct sector_info *sectors;
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106 int detect_done;
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107 };