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86ea5f93 WD |
1 | /* |
2 | * (C) Copyright 2003-2006 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * (C) Copyright 2004 | |
6 | * Mark Jonas, Freescale Semiconductor, mark.jonas@motorola.com. | |
7 | * | |
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | #include <common.h> | |
28 | #include <mpc5xxx.h> | |
29 | #include <pci.h> | |
91650b3e | 30 | #include <asm/processor.h> |
86ea5f93 | 31 | |
9e18a4bc WD |
32 | /* Two MT48LC8M32B2 for 32 MB */ |
33 | /* #include "mt48lc8m32b2-6-7.h" */ | |
34 | ||
35 | /* One MT48LC16M32S2 for 64 MB */ | |
4819fad9 WD |
36 | /* #include "mt48lc16m32s2-75.h" */ |
37 | #if defined (CONFIG_MCC200_SDRAM) | |
38 | #include "mt48lc16m16a2-75.h" | |
39 | #else | |
40 | #include "mt46v16m16-75.h" | |
41 | #endif | |
86ea5f93 | 42 | |
d87080b7 WD |
43 | DECLARE_GLOBAL_DATA_PTR; |
44 | ||
58ad4978 SR |
45 | extern flash_info_t flash_info[]; /* FLASH chips info */ |
46 | ||
cdb97a66 | 47 | extern int do_auto_update(void); |
f18e874a SR |
48 | ulong flash_get_size (ulong base, int banknum); |
49 | ||
6d0f6bcf | 50 | #ifndef CONFIG_SYS_RAMBOOT |
86ea5f93 WD |
51 | static void sdram_start (int hi_addr) |
52 | { | |
53 | long hi_addr_bit = hi_addr ? 0x01000000 : 0; | |
54 | ||
55 | /* unlock mode register */ | |
56 | *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000000 | hi_addr_bit; | |
57 | __asm__ volatile ("sync"); | |
58 | ||
59 | /* precharge all banks */ | |
60 | *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit; | |
61 | __asm__ volatile ("sync"); | |
62 | ||
63 | #if SDRAM_DDR | |
64 | /* set mode register: extended mode */ | |
65 | *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_EMODE; | |
66 | __asm__ volatile ("sync"); | |
67 | ||
68 | /* set mode register: reset DLL */ | |
69 | *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE | 0x04000000; | |
70 | __asm__ volatile ("sync"); | |
71 | #endif | |
72 | ||
73 | /* precharge all banks */ | |
74 | *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000002 | hi_addr_bit; | |
75 | __asm__ volatile ("sync"); | |
76 | ||
77 | /* auto refresh */ | |
78 | *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | 0x80000004 | hi_addr_bit; | |
79 | __asm__ volatile ("sync"); | |
80 | ||
81 | /* set mode register */ | |
82 | *(vu_long *)MPC5XXX_SDRAM_MODE = SDRAM_MODE; | |
83 | __asm__ volatile ("sync"); | |
84 | ||
85 | /* normal operation */ | |
86 | *(vu_long *)MPC5XXX_SDRAM_CTRL = SDRAM_CONTROL | hi_addr_bit; | |
87 | __asm__ volatile ("sync"); | |
9e18a4bc WD |
88 | |
89 | udelay(10); | |
86ea5f93 WD |
90 | } |
91 | #endif | |
92 | ||
93 | /* | |
94 | * ATTENTION: Although partially referenced initdram does NOT make real use | |
6d0f6bcf | 95 | * use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE |
f11033e7 | 96 | * is something else than 0x00000000. |
86ea5f93 WD |
97 | */ |
98 | ||
9973e3c6 | 99 | phys_size_t initdram (int board_type) |
86ea5f93 WD |
100 | { |
101 | ulong dramsize = 0; | |
102 | ulong dramsize2 = 0; | |
91650b3e | 103 | uint svr, pvr; |
6d0f6bcf | 104 | #ifndef CONFIG_SYS_RAMBOOT |
86ea5f93 WD |
105 | ulong test1, test2; |
106 | ||
107 | /* setup SDRAM chip selects */ | |
108 | *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x0000001e;/* 2G at 0x0 */ | |
109 | *(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;/* disabled */ | |
110 | __asm__ volatile ("sync"); | |
111 | ||
112 | /* setup config registers */ | |
113 | *(vu_long *)MPC5XXX_SDRAM_CONFIG1 = SDRAM_CONFIG1; | |
114 | *(vu_long *)MPC5XXX_SDRAM_CONFIG2 = SDRAM_CONFIG2; | |
115 | __asm__ volatile ("sync"); | |
116 | ||
117 | #if SDRAM_DDR | |
118 | /* set tap delay */ | |
119 | *(vu_long *)MPC5XXX_CDM_PORCFG = SDRAM_TAPDELAY; | |
120 | __asm__ volatile ("sync"); | |
121 | #endif | |
122 | ||
123 | /* find RAM size using SDRAM CS0 only */ | |
124 | sdram_start(0); | |
6d0f6bcf | 125 | test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); |
86ea5f93 | 126 | sdram_start(1); |
6d0f6bcf | 127 | test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000); |
86ea5f93 WD |
128 | if (test1 > test2) { |
129 | sdram_start(0); | |
130 | dramsize = test1; | |
131 | } else { | |
132 | dramsize = test2; | |
133 | } | |
134 | ||
135 | /* memory smaller than 1MB is impossible */ | |
136 | if (dramsize < (1 << 20)) { | |
137 | dramsize = 0; | |
138 | } | |
139 | ||
140 | /* set SDRAM CS0 size according to the amount of RAM found */ | |
141 | if (dramsize > 0) { | |
142 | *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0x13 + __builtin_ffs(dramsize >> 20) - 1; | |
143 | } else { | |
144 | *(vu_long *)MPC5XXX_SDRAM_CS0CFG = 0; /* disabled */ | |
145 | } | |
146 | ||
147 | /* let SDRAM CS1 start right after CS0 */ | |
148 | *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize + 0x0000001e;/* 2G */ | |
149 | ||
150 | /* find RAM size using SDRAM CS1 only */ | |
151 | if (!dramsize) | |
152 | sdram_start(0); | |
6d0f6bcf | 153 | test2 = test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000); |
86ea5f93 WD |
154 | if (!dramsize) { |
155 | sdram_start(1); | |
6d0f6bcf | 156 | test2 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), 0x80000000); |
86ea5f93 WD |
157 | } |
158 | if (test1 > test2) { | |
159 | sdram_start(0); | |
160 | dramsize2 = test1; | |
161 | } else { | |
162 | dramsize2 = test2; | |
163 | } | |
164 | ||
165 | /* memory smaller than 1MB is impossible */ | |
166 | if (dramsize2 < (1 << 20)) { | |
167 | dramsize2 = 0; | |
168 | } | |
169 | ||
170 | /* set SDRAM CS1 size according to the amount of RAM found */ | |
171 | if (dramsize2 > 0) { | |
172 | *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize | |
173 | | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1); | |
174 | } else { | |
175 | *(vu_long *)MPC5XXX_SDRAM_CS1CFG = dramsize; /* disabled */ | |
176 | } | |
177 | ||
6d0f6bcf | 178 | #else /* CONFIG_SYS_RAMBOOT */ |
86ea5f93 WD |
179 | |
180 | /* retrieve size of memory connected to SDRAM CS0 */ | |
181 | dramsize = *(vu_long *)MPC5XXX_SDRAM_CS0CFG & 0xFF; | |
182 | if (dramsize >= 0x13) { | |
183 | dramsize = (1 << (dramsize - 0x13)) << 20; | |
184 | } else { | |
185 | dramsize = 0; | |
186 | } | |
187 | ||
188 | /* retrieve size of memory connected to SDRAM CS1 */ | |
189 | dramsize2 = *(vu_long *)MPC5XXX_SDRAM_CS1CFG & 0xFF; | |
190 | if (dramsize2 >= 0x13) { | |
191 | dramsize2 = (1 << (dramsize2 - 0x13)) << 20; | |
192 | } else { | |
193 | dramsize2 = 0; | |
194 | } | |
195 | ||
6d0f6bcf | 196 | #endif /* CONFIG_SYS_RAMBOOT */ |
86ea5f93 | 197 | |
91650b3e WD |
198 | /* |
199 | * On MPC5200B we need to set the special configuration delay in the | |
200 | * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM | |
201 | * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190: | |
202 | * | |
203 | * "The SDelay should be written to a value of 0x00000004. It is | |
204 | * required to account for changes caused by normal wafer processing | |
205 | * parameters." | |
206 | */ | |
207 | svr = get_svr(); | |
208 | pvr = get_pvr(); | |
a9398e01 | 209 | if ((SVR_MJREV(svr) >= 2) && (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) { |
91650b3e WD |
210 | *(vu_long *)MPC5XXX_SDRAM_SDELAY = 0x04; |
211 | __asm__ volatile ("sync"); | |
212 | } | |
213 | ||
86ea5f93 WD |
214 | return dramsize + dramsize2; |
215 | } | |
216 | ||
86ea5f93 WD |
217 | int checkboard (void) |
218 | { | |
ed1cf845 WD |
219 | #if defined(CONFIG_PRS200) |
220 | puts ("Board: PRS200\n"); | |
221 | #else | |
c81eb1f5 | 222 | puts ("Board: MCC200\n"); |
ed1cf845 | 223 | #endif |
86ea5f93 WD |
224 | return 0; |
225 | } | |
226 | ||
58ad4978 | 227 | int misc_init_r (void) |
86ea5f93 | 228 | { |
6183bb9e WD |
229 | ulong flash_sup_end, snum; |
230 | ||
86ea5f93 | 231 | /* |
58ad4978 | 232 | * Adjust flash start and offset to detected values |
86ea5f93 | 233 | */ |
58ad4978 SR |
234 | gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize; |
235 | gd->bd->bi_flashoffset = 0; | |
86ea5f93 | 236 | |
58ad4978 SR |
237 | /* |
238 | * Check if boot FLASH isn't max size | |
239 | */ | |
6d0f6bcf | 240 | if (gd->bd->bi_flashsize < (0 - CONFIG_SYS_FLASH_BASE)) { |
58ad4978 SR |
241 | /* adjust mapping */ |
242 | *(vu_long *)MPC5XXX_BOOTCS_START = *(vu_long *)MPC5XXX_CS0_START = | |
243 | START_REG(gd->bd->bi_flashstart); | |
244 | *(vu_long *)MPC5XXX_BOOTCS_STOP = *(vu_long *)MPC5XXX_CS0_STOP = | |
245 | STOP_REG(gd->bd->bi_flashstart, gd->bd->bi_flashsize); | |
246 | ||
247 | /* | |
248 | * Re-check to get correct base address | |
249 | */ | |
6d0f6bcf | 250 | flash_get_size(gd->bd->bi_flashstart, CONFIG_SYS_MAX_FLASH_BANKS - 1); |
58ad4978 SR |
251 | |
252 | /* | |
253 | * Re-do flash protection upon new addresses | |
254 | */ | |
255 | flash_protect (FLAG_PROTECT_CLEAR, | |
256 | gd->bd->bi_flashstart, 0xffffffff, | |
6d0f6bcf | 257 | &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]); |
58ad4978 SR |
258 | |
259 | /* Monitor protection ON by default */ | |
260 | flash_protect (FLAG_PROTECT_SET, | |
6d0f6bcf JCPV |
261 | CONFIG_SYS_MONITOR_BASE, CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1, |
262 | &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]); | |
58ad4978 SR |
263 | |
264 | /* Environment protection ON by default */ | |
265 | flash_protect (FLAG_PROTECT_SET, | |
0e8d1586 JCPV |
266 | CONFIG_ENV_ADDR, |
267 | CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1, | |
6d0f6bcf | 268 | &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]); |
58ad4978 SR |
269 | |
270 | /* Redundant environment protection ON by default */ | |
271 | flash_protect (FLAG_PROTECT_SET, | |
0e8d1586 JCPV |
272 | CONFIG_ENV_ADDR_REDUND, |
273 | CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1, | |
6d0f6bcf | 274 | &flash_info[CONFIG_SYS_MAX_FLASH_BANKS - 1]); |
58ad4978 | 275 | } |
86ea5f93 | 276 | |
3a5e2188 WD |
277 | if (gd->bd->bi_flashsize > (32 << 20)) { |
278 | /* Unprotect the upper bank of the Flash */ | |
279 | *(volatile int*)MPC5XXX_CS0_CFG |= (1 << 6); | |
280 | flash_protect (FLAG_PROTECT_CLEAR, | |
5d7022b0 | 281 | flash_info[0].start[0] + flash_info[0].size / 2, |
985b950a | 282 | (flash_info[0].start[0] - 1) + flash_info[0].size, |
3a5e2188 WD |
283 | &flash_info[0]); |
284 | *(volatile int*)MPC5XXX_CS0_CFG &= ~(1 << 6); | |
6183bb9e WD |
285 | printf ("Warning: Only 32 of 64 MB of Flash are accessible from U-Boot\n"); |
286 | flash_info[0].size = 32 << 20; | |
16850919 WD |
287 | for (snum = 0, flash_sup_end = gd->bd->bi_flashstart + (32<<20); |
288 | flash_info[0].start[snum] < flash_sup_end; | |
6183bb9e WD |
289 | snum++); |
290 | flash_info[0].sector_count = snum; | |
3a5e2188 WD |
291 | } |
292 | ||
787fa158 | 293 | #ifdef CONFIG_AUTO_UPDATE |
f11033e7 | 294 | do_auto_update(); |
787fa158 | 295 | #endif |
86ea5f93 WD |
296 | return (0); |
297 | } | |
298 | ||
299 | #ifdef CONFIG_PCI | |
300 | static struct pci_controller hose; | |
301 | ||
302 | extern void pci_mpc5xxx_init(struct pci_controller *); | |
303 | ||
304 | void pci_init_board(void) | |
305 | { | |
306 | pci_mpc5xxx_init(&hose); | |
307 | } | |
308 | #endif | |
309 | ||
d39b5741 | 310 | #if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_RESET) |
86ea5f93 WD |
311 | |
312 | void init_ide_reset (void) | |
313 | { | |
314 | debug ("init_ide_reset\n"); | |
315 | ||
316 | } | |
317 | ||
318 | void ide_set_reset (int idereset) | |
319 | { | |
320 | debug ("ide_reset(%d)\n", idereset); | |
321 | ||
322 | } | |
d39b5741 | 323 | #endif |
86ea5f93 | 324 | |
3fe00109 | 325 | #if defined(CONFIG_CMD_DOC) |
86ea5f93 WD |
326 | void doc_init (void) |
327 | { | |
6d0f6bcf | 328 | doc_probe (CONFIG_SYS_DOC_BASE); |
86ea5f93 WD |
329 | } |
330 | #endif |