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[people/ms/u-boot.git] / board / cpu87 / cpu87.c
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384cc687
WD		 1/*
2 * (C) Copyright 2001-2005
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#include <common.h>
25#include <ioports.h>
26#include <mpc8260.h>
27#include "cpu87.h"
28#include <pci.h>
29
30/*
31 * I/O Port configuration table
32 *
33 * if conf is 1, then that port pin will be configured at boot time
34 * according to the five values podr/pdir/ppar/psor/pdat for that entry
35 */
36
37const iop_conf_t iop_conf_tab[4][32] = {
38
39 /* Port A configuration */
40 { /* conf ppar psor pdir podr pdat */
41 /* PA31 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII COL */
42 /* PA30 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII CRS */
43 /* PA29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 MII TX_ER */
44 /* PA28 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 MII TX_EN */
45 /* PA27 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII RX_DV */
46 /* PA26 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII RX_ER */
47 /* PA25 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII MDIO */
48 /* PA24 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII MDC */
49 /* PA23 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII MDIO */
50 /* PA22 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII MDC */
51 /* PA21 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[3] */
52 /* PA20 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[2] */
53 /* PA19 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[1] */
54 /* PA18 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[0] */
55 /* PA17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[0] */
56 /* PA16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[1] */
57 /* PA15 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[2] */
58 /* PA14 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[3] */
59 /* PA13 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII TXSL1 */
60 /* PA12 */ { 1, 0, 0, 1, 0, 1 }, /* FCC2 MII TXSL0 */
61 /* PA11 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII TXSL1 */
62 /* PA10 */ { 1, 0, 0, 1, 0, 1 }, /* FCC1 MII TXSL0 */
63 /* PA9 */ { 0, 1, 0, 1, 0, 0 }, /* SMC2 TXD */
64 /* PA8 */ { 0, 1, 0, 0, 0, 0 }, /* SMC2 RXD */
65 /* PA7 */ { 0, 0, 0, 0, 0, 0 }, /* PA7 */
66 /* PA6 */ { 1, 0, 0, 1, 0, 1 }, /* FCC2 MII PAUSE */
67 /* PA5 */ { 1, 0, 0, 1, 0, 1 }, /* FCC1 MII PAUSE */
68 /* PA4 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII PWRDN */
69 /* PA3 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII PWRDN */
70 /* PA2 */ { 0, 0, 0, 0, 0, 0 }, /* PA2 */
71 /* PA1 */ { 1, 0, 0, 0, 0, 0 }, /* FCC2 MII MDINT */
72 /* PA0 */ { 1, 0, 0, 1, 0, 0 } /* FCC1 MII MDINT */
73 },
74
75 /* Port B configuration */
76 { /* conf ppar psor pdir podr pdat */
77 /* PB31 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TX_ER */
78 /* PB30 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_DV */
79 /* PB29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC2 MII TX_EN */
80 /* PB28 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_ER */
81 /* PB27 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII COL */
82 /* PB26 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII CRS */
83 /* PB25 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[3] */
84 /* PB24 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[2] */
85 /* PB23 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[1] */
86 /* PB22 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[0] */
87 /* PB21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[0] */
88 /* PB20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[1] */
89 /* PB19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[2] */
90 /* PB18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[3] */
91 /* PB17 */ { 0, 0, 0, 0, 0, 0 }, /* PB17 */
92 /* PB16 */ { 0, 0, 0, 0, 0, 0 }, /* PB16 */
93 /* PB15 */ { 0, 0, 0, 0, 0, 0 }, /* PB15 */
94 /* PB14 */ { 0, 0, 0, 0, 0, 0 }, /* PB14 */
95 /* PB13 */ { 0, 0, 0, 0, 0, 0 }, /* PB13 */
96 /* PB12 */ { 0, 0, 0, 0, 0, 0 }, /* PB12 */
97 /* PB11 */ { 0, 0, 0, 0, 0, 0 }, /* PB11 */
98 /* PB10 */ { 0, 0, 0, 0, 0, 0 }, /* PB10 */
99 /* PB9 */ { 0, 0, 0, 0, 0, 0 }, /* PB9 */
100 /* PB8 */ { 0, 0, 0, 0, 0, 0 }, /* PB8 */
101 /* PB7 */ { 0, 0, 0, 0, 0, 0 }, /* PB7 */
102 /* PB6 */ { 0, 0, 0, 0, 0, 0 }, /* PB6 */
103 /* PB5 */ { 0, 0, 0, 0, 0, 0 }, /* PB5 */
104 /* PB4 */ { 0, 0, 0, 0, 0, 0 }, /* PB4 */
105 /* PB3 */ { 0, 0, 0, 0, 0, 0 }, /* PB3 */
106 /* PB2 */ { 0, 0, 0, 0, 0, 0 }, /* PB2 */
107 /* PB1 */ { 0, 0, 0, 0, 0, 0 }, /* PB1 */
108 /* PB0 */ { 0, 0, 0, 0, 0, 0 } /* PB0 */
109 },
110
111 /* Port C */
112 { /* conf ppar psor pdir podr pdat */
113 /* PC31 */ { 0, 0, 0, 0, 0, 0 }, /* PC31 */
114 /* PC30 */ { 0, 0, 0, 0, 0, 0 }, /* PC30 */
115 /* PC29 */ { 1, 0, 0, 0, 0, 0 }, /* SCC1 CTS */
116 /* PC28 */ { 1, 0, 0, 0, 0, 0 }, /* SCC2 CTS */
117 /* PC27 */ { 0, 0, 0, 0, 0, 0 }, /* PC27 */
118 /* PC26 */ { 0, 0, 0, 0, 0, 0 }, /* PC26 */
119 /* PC25 */ { 0, 0, 0, 0, 0, 0 }, /* PC25 */
120 /* PC24 */ { 0, 0, 0, 0, 0, 0 }, /* PC24 */
121 /* PC23 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DACFD */
122 /* PC22 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DNFD */
123 /* PC21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RX_CLK */
124 /* PC20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII TX_CLK */
125 /* PC19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_CLK */
126 /* PC18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII TX_CLK */
127 /* PC17 */ { 0, 0, 0, 0, 0, 0 }, /* PC17 */
128 /* PC16 */ { 0, 0, 0, 0, 0, 0 }, /* PC16 */
129 /* PC15 */ { 0, 0, 0, 0, 0, 0 }, /* PC15 */
130 /* PC14 */ { 0, 0, 0, 0, 0, 0 }, /* PC14 */
131 /* PC13 */ { 0, 0, 0, 0, 0, 0 }, /* PC13 */
132 /* PC12 */ { 0, 0, 0, 0, 0, 0 }, /* PC12 */
133 /* PC11 */ { 0, 0, 0, 0, 0, 0 }, /* PC11 */
134 /* PC10 */ { 0, 0, 0, 0, 0, 0 }, /* PC10 */
135 /* PC9 */ { 0, 0, 0, 0, 0, 0 }, /* FC9 */
136 /* PC8 */ { 0, 0, 0, 0, 0, 0 }, /* PC8 */
137 /* PC7 */ { 0, 0, 0, 0, 0, 0 }, /* PC7 */
138 /* PC6 */ { 0, 0, 0, 0, 0, 0 }, /* PC6 */
139 /* PC5 */ { 0, 0, 0, 0, 0, 0 }, /* PC5 */
140 /* PC4 */ { 0, 0, 0, 0, 0, 0 }, /* PC4 */
141 /* PC3 */ { 0, 0, 0, 0, 0, 0 }, /* PC3 */
142 /* PC2 */ { 0, 0, 0, 0, 0, 0 }, /* PC2 */
143 /* PC1 */ { 0, 0, 0, 0, 0, 0 }, /* PC1 */
144 /* PC0 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DRQFD */
145 },
146
147 /* Port D */
148 { /* conf ppar psor pdir podr pdat */
149 /* PD31 */ { 1, 1, 0, 0, 0, 0 }, /* SCC1 RXD */
150 /* PD30 */ { 1, 1, 1, 1, 0, 0 }, /* SCC1 TXD */
151 /* PD29 */ { 1, 0, 0, 1, 0, 0 }, /* SCC1 RTS */
152 /* PD28 */ { 1, 1, 0, 0, 0, 0 }, /* SCC2 RXD */
153 /* PD27 */ { 1, 1, 0, 1, 0, 0 }, /* SCC2 TXD */
154 /* PD26 */ { 1, 0, 0, 1, 0, 0 }, /* SCC2 RTS */
155 /* PD25 */ { 0, 0, 0, 0, 0, 0 }, /* PD25 */
156 /* PD24 */ { 0, 0, 0, 0, 0, 0 }, /* PD24 */
157 /* PD23 */ { 0, 0, 0, 0, 0, 0 }, /* PD23 */
158 /* PD22 */ { 0, 0, 0, 0, 0, 0 }, /* PD22 */
159 /* PD21 */ { 0, 0, 0, 0, 0, 0 }, /* PD21 */
160 /* PD20 */ { 0, 0, 0, 0, 0, 0 }, /* PD20 */
161 /* PD19 */ { 0, 0, 0, 0, 0, 0 }, /* PD19 */
162 /* PD18 */ { 0, 0, 0, 0, 0, 0 }, /* PD18 */
163 /* PD17 */ { 0, 0, 0, 0, 0, 0 }, /* PD17 */
164 /* PD16 */ { 0, 0, 0, 0, 0, 0 }, /* PD16 */
165#if defined(CONFIG_SOFT_I2C)
166 /* PD15 */ { 1, 0, 0, 1, 1, 1 }, /* I2C SDA */
167 /* PD14 */ { 1, 0, 0, 1, 1, 1 }, /* I2C SCL */
168#else
169#if defined(CONFIG_HARD_I2C)
170 /* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
171 /* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
172#else /* normal I/O port pins */
173 /* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
174 /* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
175#endif
176#endif
177 /* PD13 */ { 0, 0, 0, 0, 0, 0 }, /* PD13 */
178 /* PD12 */ { 0, 0, 0, 0, 0, 0 }, /* PD12 */
179 /* PD11 */ { 0, 0, 0, 0, 0, 0 }, /* PD11 */
180 /* PD10 */ { 0, 0, 0, 0, 0, 0 }, /* PD10 */
181 /* PD9 */ { 1, 1, 0, 1, 0, 0 }, /* SMC1 TXD */
182 /* PD8 */ { 1, 1, 0, 0, 0, 0 }, /* SMC1 RXD */
183 /* PD7 */ { 0, 0, 0, 0, 0, 0 }, /* PD7 */
184 /* PD6 */ { 0, 0, 0, 0, 0, 0 }, /* PD6 */
185 /* PD5 */ { 0, 0, 0, 0, 0, 0 }, /* PD5 */
186 /* PD4 */ { 0, 0, 0, 0, 0, 0 }, /* PD4 */
187 /* PD3 */ { 0, 0, 0, 0, 0, 0 }, /* PD3 */
188 /* PD2 */ { 0, 0, 0, 0, 0, 0 }, /* PD2 */
189 /* PD1 */ { 0, 0, 0, 0, 0, 0 }, /* PD1 */
190 /* PD0 */ { 0, 0, 0, 0, 0, 0 } /* PD0 */
191 }
192};
193
194/* ------------------------------------------------------------------------- */
195
196/* Check Board Identity:
197 */
198int checkboard (void)
199{
fd27996d 200 printf ("Board: CPU87 (Rev %02x)\n", CPU86_REV & 0x7f);
384cc687
WD		 201 return 0;
202}
203
204/* ------------------------------------------------------------------------- */
205
206/* Try SDRAM initialization with P/LSDMR=sdmr and ORx=orx
207 *
208 * This routine performs standard 8260 initialization sequence
209 * and calculates the available memory size. It may be called
210 * several times to try different SDRAM configurations on both
211 * 60x and local buses.
212 */
213static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
214 ulong orx, volatile uchar * base)
215{
216 volatile uchar c = 0xff;
217 volatile uint *sdmr_ptr;
218 volatile uint *orx_ptr;
219 ulong maxsize, size;
220 int i;
221
222 /* We must be able to test a location outsize the maximum legal size
223 * to find out THAT we are outside; but this address still has to be
224 * mapped by the controller. That means, that the initial mapping has
225 * to be (at least) twice as large as the maximum expected size.
226 */
227 maxsize = (1 + (~orx | 0x7fff)) / 2;
228
229 /* Since CFG_SDRAM_BASE is always 0 (??), we assume that
230 * we are configuring CS1 if base != 0
231 */
232 sdmr_ptr = &memctl->memc_psdmr;
233 orx_ptr = &memctl->memc_or2;
234
235 *orx_ptr = orx;
236
237 /*
238 * Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35):
239 *
240 * "At system reset, initialization software must set up the
241 * programmable parameters in the memory controller banks registers
242 * (ORx, BRx, P/LSDMR). After all memory parameters are configured,
243 * system software should execute the following initialization sequence
244 * for each SDRAM device.
245 *
246 * 1. Issue a PRECHARGE-ALL-BANKS command
247 * 2. Issue eight CBR REFRESH commands
248 * 3. Issue a MODE-SET command to initialize the mode register
249 *
250 * The initial commands are executed by setting P/LSDMR[OP] and
251 * accessing the SDRAM with a single-byte transaction."
252 *
253 * The appropriate BRx/ORx registers have already been set when we
254 * get here. The SDRAM can be accessed at the address CFG_SDRAM_BASE.
255 */
256
257 *sdmr_ptr = sdmr | PSDMR_OP_PREA;
258 *base = c;
259
260 *sdmr_ptr = sdmr | PSDMR_OP_CBRR;
261 for (i = 0; i < 8; i++)
262 *base = c;
263
264 *sdmr_ptr = sdmr | PSDMR_OP_MRW;
265 *(base + CFG_MRS_OFFS) = c; /* setting MR on address lines */
266
267 *sdmr_ptr = sdmr | PSDMR_OP_NORM | PSDMR_RFEN;
268 *base = c;
269
270 size = get_ram_size((long *)base, maxsize);
271
272 *orx_ptr = orx | ~(size - 1);
273
274 return (size);
275}
276
277long int initdram (int board_type)
278{
279 volatile immap_t *immap = (immap_t *) CFG_IMMR;
280 volatile memctl8260_t *memctl = &immap->im_memctl;
281
282#ifndef CFG_RAMBOOT
fd27996d 283 ulong size8, size9, size10;
384cc687
WD		 284#endif
285 long psize;
286
287 psize = 32 * 1024 * 1024;
288
289 memctl->memc_mptpr = CFG_MPTPR;
290 memctl->memc_psrt = CFG_PSRT;
291
292#ifndef CFG_RAMBOOT
293 /* 60x SDRAM setup:
294 */
295 size8 = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL,
296 (uchar *) CFG_SDRAM_BASE);
16850919 297
384cc687
WD		 298 size9 = try_init (memctl, CFG_PSDMR_9COL, CFG_OR2_9COL,
299 (uchar *) CFG_SDRAM_BASE);
16850919 300
fd27996d
WD		 301 size10 = try_init (memctl, CFG_PSDMR_10COL, CFG_OR2_10COL,
302 (uchar *) CFG_SDRAM_BASE);
16850919 303
fd27996d 304 psize = max(size8,max(size9,size10));
16850919 305
fd27996d 306 if (psize == size8) {
384cc687
WD		 307 psize = try_init (memctl, CFG_PSDMR_8COL, CFG_OR2_8COL,
308 (uchar *) CFG_SDRAM_BASE);
309 printf ("(60x:8COL) ");
fd27996d
WD		 310 } else if (psize == size9){
311 psize = try_init (memctl, CFG_PSDMR_9COL, CFG_OR2_9COL,
312 (uchar *) CFG_SDRAM_BASE);
313 printf ("(60x:9COL) ");
314 } else
315 printf ("(60x:10COL) ");
384cc687
WD		 316
317#endif /* CFG_RAMBOOT */
318
319 icache_enable ();
320
321 return (psize);
322}
323
fcec2eb9 324#if defined(CONFIG_CMD_DOC)
384cc687
WD		 325extern void doc_probe (ulong physadr);
326void doc_init (void)
327{
328 doc_probe (CFG_DOC_BASE);
329}
330#endif
331
332#ifdef CONFIG_PCI
333struct pci_controller hose;
334
335extern void pci_mpc8250_init(struct pci_controller *);
336
337void pci_init_board(void)
338{
339 pci_mpc8250_init(&hose);
340}
341#endif
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