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1 | /* |
2 | * (C) Copyright 2003 | |
3 | * Wolfgang Denk, DENX Software Engineering, [email protected]. | |
4 | * | |
5 | * (C) Copyright 2004 | |
6 | * Mark Jonas, Freescale Semiconductor, [email protected]. | |
7 | * | |
8 | * (C) Copyright 2005-2009 | |
9 | * Modified for InterControl digsyMTC MPC5200 board by | |
10 | * Frank Bodammer, GCD Hard- & Software GmbH, | |
11 | * [email protected] | |
12 | * | |
13 | * (C) Copyright 2009 | |
14 | * Grzegorz Bernacki, Semihalf, [email protected] | |
15 | * | |
16 | * See file CREDITS for list of people who contributed to this | |
17 | * project. | |
18 | * | |
19 | * This program is free software; you can redistribute it and/or | |
20 | * modify it under the terms of the GNU General Public License as | |
21 | * published by the Free Software Foundation; either version 2 of | |
22 | * the License, or (at your option) any later version. | |
23 | * | |
24 | * This program is distributed in the hope that it will be useful, | |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License | |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
32 | * MA 02111-1307 USA | |
33 | */ | |
34 | ||
35 | #include <common.h> | |
36 | #include <mpc5xxx.h> | |
37 | #include <net.h> | |
38 | #include <pci.h> | |
39 | #include <asm/processor.h> | |
40 | #include <asm/io.h> | |
41 | #include "eeprom.h" | |
42 | #include "is42s16800a-7t.h" | |
43 | ||
44 | DECLARE_GLOBAL_DATA_PTR; | |
45 | ||
46 | extern int usb_cpu_init(void); | |
47 | ||
48 | #ifndef CONFIG_SYS_RAMBOOT | |
49 | static void sdram_start(int hi_addr) | |
50 | { | |
51 | long hi_addr_bit = hi_addr ? 0x01000000 : 0; | |
52 | long control = SDRAM_CONTROL | hi_addr_bit; | |
53 | ||
54 | /* unlock mode register */ | |
55 | out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000000); | |
56 | ||
57 | /* precharge all banks */ | |
58 | out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002); | |
59 | ||
60 | /* auto refresh */ | |
61 | out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004); | |
62 | ||
63 | /* set mode register */ | |
64 | out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE); | |
65 | ||
66 | /* normal operation */ | |
67 | out_be32((void *)MPC5XXX_SDRAM_CTRL, control); | |
68 | } | |
69 | #endif | |
70 | ||
71 | /* | |
72 | * ATTENTION: Although partially referenced initdram does NOT make real use | |
73 | * use of CONFIG_SYS_SDRAM_BASE. The code does not work if | |
74 | * CONFIG_SYS_SDRAM_BASE is something else than 0x00000000. | |
75 | */ | |
76 | ||
77 | phys_size_t initdram(int board_type) | |
78 | { | |
79 | ulong dramsize = 0; | |
80 | ulong dramsize2 = 0; | |
81 | uint svr, pvr; | |
82 | #ifndef CONFIG_SYS_RAMBOOT | |
83 | ulong test1, test2; | |
84 | ||
85 | /* setup SDRAM chip selects */ | |
86 | out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0x0000001C); /* 512MB at 0x0 */ | |
87 | out_be32((void *)MPC5XXX_SDRAM_CS1CFG, 0x80000000); /* disabled */ | |
88 | ||
89 | /* setup config registers */ | |
90 | out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1); | |
91 | out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2); | |
92 | ||
93 | /* find RAM size using SDRAM CS0 only */ | |
94 | sdram_start(0); | |
95 | test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000); | |
96 | sdram_start(1); | |
97 | test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x08000000); | |
98 | if (test1 > test2) { | |
99 | sdram_start(0); | |
100 | dramsize = test1; | |
101 | } else { | |
102 | dramsize = test2; | |
103 | } | |
104 | ||
105 | /* memory smaller than 1MB is impossible */ | |
106 | if (dramsize < (1 << 20)) | |
107 | dramsize = 0; | |
108 | ||
109 | /* set SDRAM CS0 size according to the amount of RAM found */ | |
110 | if (dramsize > 0) { | |
111 | out_be32((void *)MPC5XXX_SDRAM_CS0CFG, | |
112 | (0x13 + __builtin_ffs(dramsize >> 20) - 1)); | |
113 | } else { | |
114 | out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */ | |
115 | } | |
116 | ||
117 | /* let SDRAM CS1 start right after CS0 */ | |
118 | out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize + 0x0000001C); | |
119 | ||
120 | /* find RAM size using SDRAM CS1 only */ | |
121 | test1 = get_ram_size((long *)(CONFIG_SYS_SDRAM_BASE + dramsize), | |
122 | 0x08000000); | |
123 | dramsize2 = test1; | |
124 | ||
125 | /* memory smaller than 1MB is impossible */ | |
126 | if (dramsize2 < (1 << 20)) | |
127 | dramsize2 = 0; | |
128 | ||
129 | /* set SDRAM CS1 size according to the amount of RAM found */ | |
130 | if (dramsize2 > 0) { | |
131 | out_be32((void *)MPC5XXX_SDRAM_CS1CFG, (dramsize | | |
132 | (0x13 + __builtin_ffs(dramsize2 >> 20) - 1))); | |
133 | } else { | |
134 | out_be32((void *)MPC5XXX_SDRAM_CS1CFG, dramsize); /* disabled */ | |
135 | } | |
136 | ||
137 | #else /* CONFIG_SYS_RAMBOOT */ | |
138 | ||
139 | /* retrieve size of memory connected to SDRAM CS0 */ | |
140 | dramsize = in_be32((void *)MPC5XXX_SDRAM_CS0CFG) & 0xFF; | |
141 | if (dramsize >= 0x13) | |
142 | dramsize = (1 << (dramsize - 0x13)) << 20; | |
143 | else | |
144 | dramsize = 0; | |
145 | ||
146 | /* retrieve size of memory connected to SDRAM CS1 */ | |
147 | dramsize2 = in_be32((void *)MPC5XXX_SDRAM_CS1CFG) & 0xFF; | |
148 | if (dramsize2 >= 0x13) | |
149 | dramsize2 = (1 << (dramsize2 - 0x13)) << 20; | |
150 | else | |
151 | dramsize2 = 0; | |
152 | ||
153 | #endif /* CONFIG_SYS_RAMBOOT */ | |
154 | ||
155 | /* | |
156 | * On MPC5200B we need to set the special configuration delay in the | |
157 | * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM | |
158 | * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190: | |
159 | * | |
160 | * "The SDelay should be written to a value of 0x00000004. It is | |
161 | * required to account for changes caused by normal wafer processing | |
162 | * parameters." | |
163 | */ | |
164 | svr = get_svr(); | |
165 | pvr = get_pvr(); | |
166 | if ((SVR_MJREV(svr) >= 2) && | |
167 | (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) | |
168 | out_be32((void *)MPC5XXX_SDRAM_SDELAY, 0x04); | |
169 | ||
170 | return dramsize + dramsize2; | |
171 | } | |
172 | ||
173 | int checkboard(void) | |
174 | { | |
175 | char *s = getenv("serial#"); | |
176 | ||
177 | puts ("Board: InterControl digsyMTC"); | |
178 | if (s != NULL) { | |
179 | puts(", "); | |
180 | puts(s); | |
181 | } | |
182 | putc('\n'); | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | int board_early_init_r(void) | |
188 | { | |
f1f66edf GB |
189 | #ifdef CONFIG_MPC52XX_SPI |
190 | struct mpc5xxx_gpt *gpt = (struct mpc5xxx_gpt*)MPC5XXX_GPT; | |
191 | #endif | |
5c4fa9b4 GB |
192 | /* |
193 | * Now, when we are in RAM, enable flash write access for detection | |
194 | * process. Note that CS_BOOT cannot be cleared when executing in | |
195 | * flash. | |
196 | */ | |
197 | /* disable CS_BOOT */ | |
198 | clrbits_be32((void *)MPC5XXX_ADDECR, (1 << 25)); | |
199 | /* enable CS1 */ | |
200 | setbits_be32((void *)MPC5XXX_ADDECR, (1 << 17)); | |
201 | /* enable CS0 */ | |
202 | setbits_be32((void *)MPC5XXX_ADDECR, (1 << 16)); | |
203 | ||
204 | #if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) | |
205 | /* Low level USB init, required for proper kernel operation */ | |
206 | usb_cpu_init(); | |
207 | #endif | |
f1f66edf GB |
208 | #ifdef CONFIG_MPC52XX_SPI |
209 | /* GPT 6 Output Enable */ | |
210 | out_be32(&gpt[6].emsr, 0x00000034); | |
211 | /* GPT 7 Output Enable */ | |
212 | out_be32(&gpt[7].emsr, 0x00000034); | |
213 | #endif | |
214 | ||
5c4fa9b4 GB |
215 | return (0); |
216 | } | |
217 | ||
218 | void board_get_enetaddr (uchar * enet) | |
219 | { | |
220 | ushort read = 0; | |
221 | ushort addr_of_eth_addr = 0; | |
222 | ushort len_sys = 0; | |
223 | ushort len_sys_cfg = 0; | |
224 | ||
225 | /* check identification word */ | |
226 | eeprom_read(EEPROM_ADDR, EEPROM_ADDR_IDENT, (uchar *)&read, 2); | |
227 | if (read != EEPROM_IDENT) | |
228 | return; | |
229 | ||
230 | /* calculate offset of config area */ | |
231 | eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYS, (uchar *)&len_sys, 2); | |
232 | eeprom_read(EEPROM_ADDR, EEPROM_ADDR_LEN_SYSCFG, | |
233 | (uchar *)&len_sys_cfg, 2); | |
234 | addr_of_eth_addr = (len_sys + len_sys_cfg + EEPROM_ADDR_ETHADDR) << 1; | |
235 | if (addr_of_eth_addr >= EEPROM_LEN) | |
236 | return; | |
237 | ||
238 | eeprom_read(EEPROM_ADDR, addr_of_eth_addr, enet, 6); | |
239 | } | |
240 | ||
241 | int misc_init_r(void) | |
242 | { | |
243 | uchar enetaddr[6]; | |
244 | ||
245 | if (!eth_getenv_enetaddr("ethaddr", enetaddr)) { | |
246 | board_get_enetaddr(enetaddr); | |
247 | eth_setenv_enetaddr("ethaddr", enetaddr); | |
248 | } | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | #ifdef CONFIG_PCI | |
254 | static struct pci_controller hose; | |
255 | ||
256 | extern void pci_mpc5xxx_init(struct pci_controller *); | |
257 | ||
258 | void pci_init_board(void) | |
259 | { | |
260 | pci_mpc5xxx_init(&hose); | |
261 | } | |
262 | #endif | |
263 | ||
264 | #ifdef CONFIG_CMD_IDE | |
265 | ||
266 | #ifdef CONFIG_IDE_RESET | |
267 | ||
268 | void init_ide_reset(void) | |
269 | { | |
270 | debug ("init_ide_reset\n"); | |
271 | ||
272 | /* set gpio output value to 1 */ | |
273 | setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25)); | |
274 | /* open drain output */ | |
275 | setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25)); | |
276 | /* direction output */ | |
277 | setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25)); | |
278 | /* enable gpio */ | |
279 | setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25)); | |
280 | ||
281 | } | |
282 | ||
283 | void ide_set_reset(int idereset) | |
284 | { | |
285 | debug ("ide_reset(%d)\n", idereset); | |
286 | ||
287 | /* set gpio output value to 0 */ | |
288 | clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25)); | |
289 | /* open drain output */ | |
290 | setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25)); | |
291 | /* direction output */ | |
292 | setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25)); | |
293 | /* enable gpio */ | |
294 | setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25)); | |
295 | ||
296 | udelay(10000); | |
297 | ||
298 | /* set gpio output value to 1 */ | |
299 | setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, (1 << 25)); | |
300 | /* open drain output */ | |
301 | setbits_be32((void *)MPC5XXX_WU_GPIO_ODE, (1 << 25)); | |
302 | /* direction output */ | |
303 | setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, (1 << 25)); | |
304 | /* enable gpio */ | |
305 | setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, (1 << 25)); | |
306 | } | |
307 | #endif /* CONFIG_IDE_RESET */ | |
308 | ||
309 | #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) | |
310 | void ft_board_setup(void *blob, bd_t *bd) | |
311 | { | |
312 | ft_cpu_setup(blob, bd); | |
313 | } | |
314 | #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */ | |
315 | ||
316 | #endif /* CONFIG_CMD_IDE */ |