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[u-boot/qq2440-u-boot.git] / board / cpu86 / cpu86.c
blob929291052f2aafd7346438622fa1f546a4321d30
1 /*
2 * (C) Copyright 2001
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <ioports.h>
10 #include <mpc8260.h>
11 #include "cpu86.h"
12
13 /*
14 * I/O Port configuration table
15 *
16 * if conf is 1, then that port pin will be configured at boot time
17 * according to the five values podr/pdir/ppar/psor/pdat for that entry
18 */
19
20 const iop_conf_t iop_conf_tab[4][32] = {
21
22 /* Port A configuration */
23 { /* conf ppar psor pdir podr pdat */
24 /* PA31 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII COL */
25 /* PA30 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII CRS */
26 /* PA29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 MII TX_ER */
27 /* PA28 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 MII TX_EN */
28 /* PA27 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII RX_DV */
29 /* PA26 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII RX_ER */
30 /* PA25 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII MDIO */
31 /* PA24 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII MDC */
32 /* PA23 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII MDIO */
33 /* PA22 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII MDC */
34 /* PA21 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[3] */
35 /* PA20 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[2] */
36 /* PA19 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[1] */
37 /* PA18 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[0] */
38 /* PA17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[0] */
39 /* PA16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[1] */
40 /* PA15 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[2] */
41 /* PA14 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[3] */
42 /* PA13 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII TXSL1 */
43 /* PA12 */ { 1, 0, 0, 1, 0, 1 }, /* FCC2 MII TXSL0 */
44 /* PA11 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII TXSL1 */
45 /* PA10 */ { 1, 0, 0, 1, 0, 1 }, /* FCC1 MII TXSL0 */
46 /* PA9 */ { 0, 1, 0, 1, 0, 0 }, /* SMC2 TXD */
47 /* PA8 */ { 0, 1, 0, 0, 0, 0 }, /* SMC2 RXD */
48 /* PA7 */ { 0, 0, 0, 0, 0, 0 }, /* PA7 */
49 /* PA6 */ { 1, 0, 0, 1, 0, 1 }, /* FCC2 MII PAUSE */
50 /* PA5 */ { 1, 0, 0, 1, 0, 1 }, /* FCC1 MII PAUSE */
51 /* PA4 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MII PWRDN */
52 /* PA3 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1 MII PWRDN */
53 /* PA2 */ { 0, 0, 0, 0, 0, 0 }, /* PA2 */
54 /* PA1 */ { 1, 0, 0, 0, 0, 0 }, /* FCC2 MII MDINT */
55 /* PA0 */ { 1, 0, 0, 1, 0, 0 } /* FCC1 MII MDINT */
56 },
57
58 /* Port B configuration */
59 { /* conf ppar psor pdir podr pdat */
60 /* PB31 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TX_ER */
61 /* PB30 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_DV */
62 /* PB29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC2 MII TX_EN */
63 /* PB28 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_ER */
64 /* PB27 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII COL */
65 /* PB26 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII CRS */
66 /* PB25 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[3] */
67 /* PB24 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[2] */
68 /* PB23 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[1] */
69 /* PB22 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[0] */
70 /* PB21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[0] */
71 /* PB20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[1] */
72 /* PB19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[2] */
73 /* PB18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[3] */
74 /* PB17 */ { 0, 0, 0, 0, 0, 0 }, /* PB17 */
75 /* PB16 */ { 0, 0, 0, 0, 0, 0 }, /* PB16 */
76 /* PB15 */ { 0, 0, 0, 0, 0, 0 }, /* PB15 */
77 /* PB14 */ { 0, 0, 0, 0, 0, 0 }, /* PB14 */
78 /* PB13 */ { 0, 0, 0, 0, 0, 0 }, /* PB13 */
79 /* PB12 */ { 0, 0, 0, 0, 0, 0 }, /* PB12 */
80 /* PB11 */ { 0, 0, 0, 0, 0, 0 }, /* PB11 */
81 /* PB10 */ { 0, 0, 0, 0, 0, 0 }, /* PB10 */
82 /* PB9 */ { 0, 0, 0, 0, 0, 0 }, /* PB9 */
83 /* PB8 */ { 0, 0, 0, 0, 0, 0 }, /* PB8 */
84 /* PB7 */ { 0, 0, 0, 0, 0, 0 }, /* PB7 */
85 /* PB6 */ { 0, 0, 0, 0, 0, 0 }, /* PB6 */
86 /* PB5 */ { 0, 0, 0, 0, 0, 0 }, /* PB5 */
87 /* PB4 */ { 0, 0, 0, 0, 0, 0 }, /* PB4 */
88 /* PB3 */ { 0, 0, 0, 0, 0, 0 }, /* PB3 */
89 /* PB2 */ { 0, 0, 0, 0, 0, 0 }, /* PB2 */
90 /* PB1 */ { 0, 0, 0, 0, 0, 0 }, /* PB1 */
91 /* PB0 */ { 0, 0, 0, 0, 0, 0 } /* PB0 */
92 },
93
94 /* Port C */
95 { /* conf ppar psor pdir podr pdat */
96 /* PC31 */ { 0, 0, 0, 0, 0, 0 }, /* PC31 */
97 /* PC30 */ { 0, 0, 0, 0, 0, 0 }, /* PC30 */
98 /* PC29 */ { 1, 0, 0, 0, 0, 0 }, /* SCC1 CTS */
99 /* PC28 */ { 1, 0, 0, 0, 0, 0 }, /* SCC2 CTS */
100 /* PC27 */ { 0, 0, 0, 0, 0, 0 }, /* PC27 */
101 /* PC26 */ { 0, 0, 0, 0, 0, 0 }, /* PC26 */
102 /* PC25 */ { 0, 0, 0, 0, 0, 0 }, /* PC25 */
103 /* PC24 */ { 0, 0, 0, 0, 0, 0 }, /* PC24 */
104 /* PC23 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DACFD */
105 /* PC22 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DNFD */
106 /* PC21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RX_CLK */
107 /* PC20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII TX_CLK */
108 /* PC19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_CLK */
109 /* PC18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII TX_CLK */
110 /* PC17 */ { 0, 0, 0, 0, 0, 0 }, /* PC17 */
111 /* PC16 */ { 0, 0, 0, 0, 0, 0 }, /* PC16 */
112 /* PC15 */ { 0, 0, 0, 0, 0, 0 }, /* PC15 */
113 /* PC14 */ { 0, 0, 0, 0, 0, 0 }, /* PC14 */
114 /* PC13 */ { 0, 0, 0, 0, 0, 0 }, /* PC13 */
115 /* PC12 */ { 0, 0, 0, 0, 0, 0 }, /* PC12 */
116 /* PC11 */ { 0, 0, 0, 0, 0, 0 }, /* PC11 */
117 /* PC10 */ { 0, 0, 0, 0, 0, 0 }, /* PC10 */
118 /* PC9 */ { 0, 0, 0, 0, 0, 0 }, /* FC9 */
119 /* PC8 */ { 0, 0, 0, 0, 0, 0 }, /* PC8 */
120 /* PC7 */ { 0, 0, 0, 0, 0, 0 }, /* PC7 */
121 /* PC6 */ { 0, 0, 0, 0, 0, 0 }, /* PC6 */
122 /* PC5 */ { 0, 0, 0, 0, 0, 0 }, /* PC5 */
123 /* PC4 */ { 0, 0, 0, 0, 0, 0 }, /* PC4 */
124 /* PC3 */ { 0, 0, 0, 0, 0, 0 }, /* PC3 */
125 /* PC2 */ { 0, 0, 0, 0, 0, 0 }, /* PC2 */
126 /* PC1 */ { 0, 0, 0, 0, 0, 0 }, /* PC1 */
127 /* PC0 */ { 0, 0, 0, 0, 0, 0 }, /* FDC37C78 DRQFD */
128 },
129
130 /* Port D */
131 { /* conf ppar psor pdir podr pdat */
132 /* PD31 */ { 1, 1, 0, 0, 0, 0 }, /* SCC1 RXD */
133 /* PD30 */ { 1, 1, 1, 1, 0, 0 }, /* SCC1 TXD */
134 /* PD29 */ { 1, 0, 0, 1, 0, 0 }, /* SCC1 RTS */
135 /* PD28 */ { 1, 1, 0, 0, 0, 0 }, /* SCC2 RXD */
136 /* PD27 */ { 1, 1, 0, 1, 0, 0 }, /* SCC2 TXD */
137 /* PD26 */ { 1, 0, 0, 1, 0, 0 }, /* SCC2 RTS */
138 /* PD25 */ { 0, 0, 0, 0, 0, 0 }, /* PD25 */
139 /* PD24 */ { 0, 0, 0, 0, 0, 0 }, /* PD24 */
140 /* PD23 */ { 0, 0, 0, 0, 0, 0 }, /* PD23 */
141 /* PD22 */ { 0, 0, 0, 0, 0, 0 }, /* PD22 */
142 /* PD21 */ { 0, 0, 0, 0, 0, 0 }, /* PD21 */
143 /* PD20 */ { 0, 0, 0, 0, 0, 0 }, /* PD20 */
144 /* PD19 */ { 0, 0, 0, 0, 0, 0 }, /* PD19 */
145 /* PD18 */ { 0, 0, 0, 0, 0, 0 }, /* PD18 */
146 /* PD17 */ { 0, 0, 0, 0, 0, 0 }, /* PD17 */
147 /* PD16 */ { 0, 0, 0, 0, 0, 0 }, /* PD16 */
148 #if defined(CONFIG_SYS_I2C_SOFT)
149 /* PD15 */ { 1, 0, 0, 1, 1, 1 }, /* I2C SDA */
150 /* PD14 */ { 1, 0, 0, 1, 1, 1 }, /* I2C SCL */
151 #else
152 #if defined(CONFIG_HARD_I2C)
153 /* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
154 /* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
155 #else /* normal I/O port pins */
156 /* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
157 /* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
158 #endif
159 #endif
160 /* PD13 */ { 0, 0, 0, 0, 0, 0 }, /* PD13 */
161 /* PD12 */ { 0, 0, 0, 0, 0, 0 }, /* PD12 */
162 /* PD11 */ { 0, 0, 0, 0, 0, 0 }, /* PD11 */
163 /* PD10 */ { 0, 0, 0, 0, 0, 0 }, /* PD10 */
164 /* PD9 */ { 1, 1, 0, 1, 0, 0 }, /* SMC1 TXD */
165 /* PD8 */ { 1, 1, 0, 0, 0, 0 }, /* SMC1 RXD */
166 /* PD7 */ { 0, 0, 0, 0, 0, 0 }, /* PD7 */
167 /* PD6 */ { 0, 0, 0, 0, 0, 0 }, /* PD6 */
168 /* PD5 */ { 0, 0, 0, 0, 0, 0 }, /* PD5 */
169 /* PD4 */ { 0, 0, 0, 0, 0, 0 }, /* PD4 */
170 /* PD3 */ { 0, 0, 0, 0, 0, 0 }, /* PD3 */
171 /* PD2 */ { 0, 0, 0, 0, 0, 0 }, /* PD2 */
172 /* PD1 */ { 0, 0, 0, 0, 0, 0 }, /* PD1 */
173 /* PD0 */ { 0, 0, 0, 0, 0, 0 } /* PD0 */
174 }
175 };
176
177 /* ------------------------------------------------------------------------- */
178
179 /* Check Board Identity:
180 */
181 int checkboard (void)
182 {
183 printf ("Board: CPU86 (Rev %02x)\n", CPU86_REV);
184 return 0;
185 }
186
187 /* ------------------------------------------------------------------------- */
188
189 /* Try SDRAM initialization with P/LSDMR=sdmr and ORx=orx
190 *
191 * This routine performs standard 8260 initialization sequence
192 * and calculates the available memory size. It may be called
193 * several times to try different SDRAM configurations on both
194 * 60x and local buses.
195 */
196 static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
197 ulong orx, volatile uchar * base)
198 {
199 volatile uchar c = 0xff;
200 volatile uint *sdmr_ptr;
201 volatile uint *orx_ptr;
202 ulong maxsize, size;
203 int i;
204
205 /* We must be able to test a location outsize the maximum legal size
206 * to find out THAT we are outside; but this address still has to be
207 * mapped by the controller. That means, that the initial mapping has
208 * to be (at least) twice as large as the maximum expected size.
209 */
210 maxsize = (1 + (~orx | 0x7fff)) / 2;
211
212 /* Since CONFIG_SYS_SDRAM_BASE is always 0 (??), we assume that
213 * we are configuring CS1 if base != 0
214 */
215 sdmr_ptr = &memctl->memc_psdmr;
216 orx_ptr = &memctl->memc_or2;
217
218 *orx_ptr = orx;
219
220 /*
221 * Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35):
222 *
223 * "At system reset, initialization software must set up the
224 * programmable parameters in the memory controller banks registers
225 * (ORx, BRx, P/LSDMR). After all memory parameters are configured,
226 * system software should execute the following initialization sequence
227 * for each SDRAM device.
228 *
229 * 1. Issue a PRECHARGE-ALL-BANKS command
230 * 2. Issue eight CBR REFRESH commands
231 * 3. Issue a MODE-SET command to initialize the mode register
232 *
233 * The initial commands are executed by setting P/LSDMR[OP] and
234 * accessing the SDRAM with a single-byte transaction."
235 *
236 * The appropriate BRx/ORx registers have already been set when we
237 * get here. The SDRAM can be accessed at the address CONFIG_SYS_SDRAM_BASE.
238 */
239
240 *sdmr_ptr = sdmr | PSDMR_OP_PREA;
241 *base = c;
242
243 *sdmr_ptr = sdmr | PSDMR_OP_CBRR;
244 for (i = 0; i < 8; i++)
245 *base = c;
246
247 *sdmr_ptr = sdmr | PSDMR_OP_MRW;
248 *(base + CONFIG_SYS_MRS_OFFS) = c; /* setting MR on address lines */
249
250 *sdmr_ptr = sdmr | PSDMR_OP_NORM | PSDMR_RFEN;
251 *base = c;
252
253 size = get_ram_size((long *)base, maxsize);
254
255 *orx_ptr = orx | ~(size - 1);
256
257 return (size);
258 }
259
260 phys_size_t initdram (int board_type)
261 {
262 volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
263 volatile memctl8260_t *memctl = &immap->im_memctl;
264
265 #ifndef CONFIG_SYS_RAMBOOT
266 ulong size8, size9;
267 #endif
268 long psize;
269
270 psize = 32 * 1024 * 1024;
271
272 memctl->memc_mptpr = CONFIG_SYS_MPTPR;
273 memctl->memc_psrt = CONFIG_SYS_PSRT;
274
275 #ifndef CONFIG_SYS_RAMBOOT
276 /* 60x SDRAM setup:
277 */
278 size8 = try_init (memctl, CONFIG_SYS_PSDMR_8COL, CONFIG_SYS_OR2_8COL,
279 (uchar *) CONFIG_SYS_SDRAM_BASE);
280 size9 = try_init (memctl, CONFIG_SYS_PSDMR_9COL, CONFIG_SYS_OR2_9COL,
281 (uchar *) CONFIG_SYS_SDRAM_BASE);
282
283 if (size8 < size9) {
284 psize = size9;
285 printf ("(60x:9COL) ");
286 } else {
287 psize = try_init (memctl, CONFIG_SYS_PSDMR_8COL, CONFIG_SYS_OR2_8COL,
288 (uchar *) CONFIG_SYS_SDRAM_BASE);
289 printf ("(60x:8COL) ");
290 }
291
292 #endif /* CONFIG_SYS_RAMBOOT */
293
294 icache_enable ();
295
296 return (psize);
297 }
298
299 #if defined(CONFIG_CMD_DOC)
300 void doc_init (void)
301 {
302 doc_probe (CONFIG_SYS_DOC_BASE);
303 }
304 #endif
u-boot for qq2440