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Commit | Line | Data |
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c7de829c | 1 | /* |
6608043f | 2 | * (C) Copyright 2000-2006 |
c7de829c WD |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
c7de829c WD |
6 | */ |
7 | ||
8 | #include <common.h> | |
9 | #include <flash.h> | |
10 | ||
e6f2e902 | 11 | extern flash_info_t flash_info[]; /* info for FLASH chips */ |
c7de829c WD |
12 | |
13 | /*----------------------------------------------------------------------- | |
14 | * Functions | |
15 | */ | |
16 | ||
17 | /*----------------------------------------------------------------------- | |
18 | * Set protection status for monitor sectors | |
19 | * | |
20 | * The monitor is always located in the _first_ Flash bank. | |
21 | * If necessary you have to map the second bank at lower addresses. | |
22 | */ | |
23 | void | |
24 | flash_protect (int flag, ulong from, ulong to, flash_info_t *info) | |
25 | { | |
26 | ulong b_end = info->start[0] + info->size - 1; /* bank end address */ | |
27 | short s_end = info->sector_count - 1; /* index of last sector */ | |
28 | int i; | |
29 | ||
30 | /* Do nothing if input data is bad. */ | |
31 | if (info->sector_count == 0 || info->size == 0 || to < from) { | |
32 | return; | |
33 | } | |
34 | ||
35 | /* There is nothing to do if we have no data about the flash | |
36 | * or the protect range and flash range don't overlap. | |
37 | */ | |
38 | if (info->flash_id == FLASH_UNKNOWN || | |
39 | to < info->start[0] || from > b_end) { | |
40 | return; | |
41 | } | |
42 | ||
43 | for (i=0; i<info->sector_count; ++i) { | |
44 | ulong end; /* last address in current sect */ | |
45 | ||
46 | end = (i == s_end) ? b_end : info->start[i + 1] - 1; | |
47 | ||
48 | /* Update protection if any part of the sector | |
49 | * is in the specified range. | |
50 | */ | |
51 | if (from <= end && to >= info->start[i]) { | |
52 | if (flag & FLAG_PROTECT_CLEAR) { | |
6d0f6bcf | 53 | #if defined(CONFIG_SYS_FLASH_PROTECTION) |
c7de829c WD |
54 | flash_real_protect(info, i, 0); |
55 | #else | |
56 | info->protect[i] = 0; | |
6d0f6bcf | 57 | #endif /* CONFIG_SYS_FLASH_PROTECTION */ |
c7de829c WD |
58 | } |
59 | else if (flag & FLAG_PROTECT_SET) { | |
6d0f6bcf | 60 | #if defined(CONFIG_SYS_FLASH_PROTECTION) |
c7de829c WD |
61 | flash_real_protect(info, i, 1); |
62 | #else | |
63 | info->protect[i] = 1; | |
6d0f6bcf | 64 | #endif /* CONFIG_SYS_FLASH_PROTECTION */ |
c7de829c WD |
65 | } |
66 | } | |
67 | } | |
68 | } | |
69 | ||
70 | /*----------------------------------------------------------------------- | |
71 | */ | |
72 | ||
73 | flash_info_t * | |
74 | addr2info (ulong addr) | |
75 | { | |
76 | #ifndef CONFIG_SPD823TS | |
77 | flash_info_t *info; | |
78 | int i; | |
79 | ||
6d0f6bcf | 80 | for (i=0, info = &flash_info[0]; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) { |
c7de829c WD |
81 | if (info->flash_id != FLASH_UNKNOWN && |
82 | addr >= info->start[0] && | |
83 | /* WARNING - The '- 1' is needed if the flash | |
84 | * is at the end of the address space, since | |
85 | * info->start[0] + info->size wraps back to 0. | |
86 | * Please don't change this unless you understand this. | |
87 | */ | |
88 | addr <= info->start[0] + info->size - 1) { | |
89 | return (info); | |
90 | } | |
91 | } | |
92 | #endif /* CONFIG_SPD823TS */ | |
93 | ||
94 | return (NULL); | |
95 | } | |
96 | ||
97 | /*----------------------------------------------------------------------- | |
98 | * Copy memory to flash. | |
99 | * Make sure all target addresses are within Flash bounds, | |
100 | * and no protected sectors are hit. | |
101 | * Returns: | |
102 | * ERR_OK 0 - OK | |
103 | * ERR_TIMOUT 1 - write timeout | |
104 | * ERR_NOT_ERASED 2 - Flash not erased | |
105 | * ERR_PROTECTED 4 - target range includes protected sectors | |
106 | * ERR_INVAL 8 - target address not in Flash memory | |
107 | * ERR_ALIGN 16 - target address not aligned on boundary | |
108 | * (only some targets require alignment) | |
109 | */ | |
110 | int | |
6608043f | 111 | flash_write (char *src, ulong addr, ulong cnt) |
c7de829c WD |
112 | { |
113 | #ifdef CONFIG_SPD823TS | |
114 | return (ERR_TIMOUT); /* any other error codes are possible as well */ | |
115 | #else | |
116 | int i; | |
117 | ulong end = addr + cnt - 1; | |
118 | flash_info_t *info_first = addr2info (addr); | |
119 | flash_info_t *info_last = addr2info (end ); | |
120 | flash_info_t *info; | |
121 | int j; | |
122 | ||
123 | if (cnt == 0) { | |
124 | return (ERR_OK); | |
125 | } | |
126 | ||
127 | if (!info_first || !info_last) { | |
128 | return (ERR_INVAL); | |
129 | } | |
130 | ||
131 | for (info = info_first; info <= info_last; ++info) { | |
132 | ulong b_end = info->start[0] + info->size; /* bank end addr */ | |
133 | short s_end = info->sector_count - 1; | |
134 | for (i=0; i<info->sector_count; ++i) { | |
135 | ulong e_addr = (i == s_end) ? b_end : info->start[i + 1]; | |
136 | ||
137 | if ((end >= info->start[i]) && (addr < e_addr) && | |
138 | (info->protect[i] != 0) ) { | |
139 | return (ERR_PROTECTED); | |
140 | } | |
141 | } | |
142 | } | |
143 | ||
27b207fd WD |
144 | printf("\rWriting "); |
145 | for (j=0; j<20; j++) putc(177); | |
146 | printf("\rWriting "); | |
c7de829c WD |
147 | |
148 | /* finally write data to flash */ | |
149 | for (info = info_first; info <= info_last && cnt>0; ++info) { | |
150 | ulong len; | |
151 | ||
152 | len = info->start[0] + info->size - addr; | |
153 | if (len > cnt) | |
154 | len = cnt; | |
155 | ||
156 | if ((i = write_buff(info, src, addr, len)) != 0) { | |
157 | return (i); | |
158 | } | |
159 | cnt -= len; | |
160 | addr += len; | |
161 | src += len; | |
162 | } | |
163 | return (ERR_OK); | |
164 | #endif /* CONFIG_SPD823TS */ | |
165 | } | |
166 | ||
167 | /*----------------------------------------------------------------------- | |
168 | */ |