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8a316c9b SR |
1 | /* |
2 | * (C) Copyright 2000 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* | |
25 | * Modified 4/5/2001 | |
26 | * Wait for completion of each sector erase command issued | |
27 | * 4/5/2001 | |
28 | * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com | |
29 | */ | |
30 | ||
31 | #include <common.h> | |
32 | #include <ppc4xx.h> | |
33 | #include <asm/processor.h> | |
34 | ||
6d0f6bcf | 35 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
8a316c9b SR |
36 | |
37 | #undef DEBUG | |
38 | #ifdef DEBUG | |
39 | #define DEBUGF(x...) printf(x) | |
40 | #else | |
41 | #define DEBUGF(x...) | |
42 | #endif /* DEBUG */ | |
43 | ||
44 | /* | |
45 | * include common flash code (for amcc boards) | |
46 | */ | |
47 | #include "../common/flash.c" | |
48 | ||
49 | /*----------------------------------------------------------------------- | |
50 | * Functions | |
51 | */ | |
52 | static ulong flash_get_size(vu_long * addr, flash_info_t * info); | |
53 | static void flash_get_offsets(ulong base, flash_info_t * info); | |
54 | ||
55 | unsigned long flash_init(void) | |
56 | { | |
57 | unsigned long size_b0, size_b1; | |
58 | int i; | |
59 | uint pbcr; | |
60 | unsigned long base_b0, base_b1; | |
61 | ||
62 | /* Init: no FLASHes known */ | |
6d0f6bcf | 63 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
8a316c9b SR |
64 | flash_info[i].flash_id = FLASH_UNKNOWN; |
65 | } | |
66 | ||
67 | /* Static FLASH Bank configuration here - FIXME XXX */ | |
68 | ||
69 | size_b0 = | |
70 | flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]); | |
71 | ||
72 | if (flash_info[0].flash_id == FLASH_UNKNOWN) { | |
73 | printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", | |
74 | size_b0, size_b0 << 20); | |
75 | } | |
76 | ||
77 | /* Only one bank */ | |
6d0f6bcf | 78 | if (CONFIG_SYS_MAX_FLASH_BANKS == 1) { |
8a316c9b SR |
79 | /* Setup offsets */ |
80 | flash_get_offsets(FLASH_BASE0_PRELIM, &flash_info[0]); | |
81 | ||
82 | /* Monitor protection ON by default */ | |
83 | (void)flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
84 | CONFIG_SYS_MONITOR_BASE, |
85 | CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1, | |
8a316c9b | 86 | &flash_info[0]); |
5a1aceb0 | 87 | #ifdef CONFIG_ENV_IS_IN_FLASH |
0e8d1586 JCPV |
88 | (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR, |
89 | CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, | |
8a316c9b | 90 | &flash_info[0]); |
0e8d1586 JCPV |
91 | (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND, |
92 | CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1, | |
8a316c9b SR |
93 | &flash_info[0]); |
94 | #endif | |
95 | ||
96 | size_b1 = 0; | |
97 | flash_info[0].size = size_b0; | |
98 | } | |
99 | ||
100 | /* 2 banks */ | |
101 | else { | |
102 | size_b1 = | |
103 | flash_get_size((vu_long *) FLASH_BASE1_PRELIM, | |
104 | &flash_info[1]); | |
105 | ||
106 | /* Re-do sizing to get full correct info */ | |
107 | ||
108 | if (size_b1) { | |
d1c3b275 SR |
109 | mtdcr(EBC0_CFGADDR, PB0CR); |
110 | pbcr = mfdcr(EBC0_CFGDATA); | |
111 | mtdcr(EBC0_CFGADDR, PB0CR); | |
8a316c9b SR |
112 | base_b1 = -size_b1; |
113 | pbcr = (pbcr & 0x0001ffff) | base_b1 | | |
114 | (((size_b1 / 1024 / 1024) - 1) << 17); | |
d1c3b275 SR |
115 | mtdcr(EBC0_CFGDATA, pbcr); |
116 | /* printf("PB1CR = %x\n", pbcr); */ | |
8a316c9b SR |
117 | } |
118 | ||
119 | if (size_b0) { | |
d1c3b275 SR |
120 | mtdcr(EBC0_CFGADDR, PB1CR); |
121 | pbcr = mfdcr(EBC0_CFGDATA); | |
122 | mtdcr(EBC0_CFGADDR, PB1CR); | |
8a316c9b SR |
123 | base_b0 = base_b1 - size_b0; |
124 | pbcr = (pbcr & 0x0001ffff) | base_b0 | | |
125 | (((size_b0 / 1024 / 1024) - 1) << 17); | |
d1c3b275 SR |
126 | mtdcr(EBC0_CFGDATA, pbcr); |
127 | /* printf("PB0CR = %x\n", pbcr); */ | |
8a316c9b SR |
128 | } |
129 | ||
130 | size_b0 = flash_get_size((vu_long *) base_b0, &flash_info[0]); | |
131 | ||
132 | flash_get_offsets(base_b0, &flash_info[0]); | |
133 | ||
134 | /* monitor protection ON by default */ | |
135 | (void)flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf | 136 | base_b0 + size_b0 - CONFIG_SYS_MONITOR_LEN, |
8a316c9b SR |
137 | base_b0 + size_b0 - 1, &flash_info[0]); |
138 | /* Also protect sector containing initial power-up instruction */ | |
139 | /* (flash_protect() checks address range - other call ignored) */ | |
140 | (void)flash_protect(FLAG_PROTECT_SET, | |
141 | 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]); | |
142 | (void)flash_protect(FLAG_PROTECT_SET, | |
143 | 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[1]); | |
144 | ||
145 | if (size_b1) { | |
146 | /* Re-do sizing to get full correct info */ | |
147 | size_b1 = | |
148 | flash_get_size((vu_long *) base_b1, &flash_info[1]); | |
149 | ||
150 | flash_get_offsets(base_b1, &flash_info[1]); | |
151 | ||
152 | /* monitor protection ON by default */ | |
153 | (void)flash_protect(FLAG_PROTECT_SET, | |
6d0f6bcf | 154 | base_b1 + size_b1 - CONFIG_SYS_MONITOR_LEN, |
8a316c9b SR |
155 | base_b1 + size_b1 - 1, |
156 | &flash_info[1]); | |
157 | /* monitor protection OFF by default (one is enough) */ | |
158 | (void)flash_protect(FLAG_PROTECT_CLEAR, | |
6d0f6bcf | 159 | base_b0 + size_b0 - CONFIG_SYS_MONITOR_LEN, |
8a316c9b SR |
160 | base_b0 + size_b0 - 1, |
161 | &flash_info[0]); | |
162 | } else { | |
163 | flash_info[1].flash_id = FLASH_UNKNOWN; | |
164 | flash_info[1].sector_count = -1; | |
165 | } | |
166 | ||
167 | flash_info[0].size = size_b0; | |
168 | flash_info[1].size = size_b1; | |
169 | } /* else 2 banks */ | |
170 | return (size_b0 + size_b1); | |
171 | } | |
172 | ||
173 | static void flash_get_offsets(ulong base, flash_info_t * info) | |
174 | { | |
175 | int i; | |
176 | ||
177 | /* set up sector start address table */ | |
178 | if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) || | |
179 | (info->flash_id == FLASH_AM040)) { | |
180 | for (i = 0; i < info->sector_count; i++) | |
181 | info->start[i] = base + (i * 0x00010000); | |
182 | } else { | |
183 | if (info->flash_id & FLASH_BTYPE) { | |
184 | /* set sector offsets for bottom boot block type */ | |
185 | info->start[0] = base + 0x00000000; | |
186 | info->start[1] = base + 0x00004000; | |
187 | info->start[2] = base + 0x00006000; | |
188 | info->start[3] = base + 0x00008000; | |
189 | for (i = 4; i < info->sector_count; i++) { | |
190 | info->start[i] = | |
191 | base + (i * 0x00010000) - 0x00030000; | |
192 | } | |
193 | } else { | |
194 | /* set sector offsets for top boot block type */ | |
195 | i = info->sector_count - 1; | |
196 | info->start[i--] = base + info->size - 0x00004000; | |
197 | info->start[i--] = base + info->size - 0x00006000; | |
198 | info->start[i--] = base + info->size - 0x00008000; | |
199 | for (; i >= 0; i--) { | |
200 | info->start[i] = base + i * 0x00010000; | |
201 | } | |
202 | } | |
203 | } | |
204 | } |