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Sergei Poselenov9531a232010-09-09 23:03:31 +02001/*
2 * (C) Copyright 2003
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 * (C) Copyright 2010
9 * Sergei Poselenov, Emcraft Systems, sposelenov@emcraft.com.
10 *
Wolfgang Denk1a459662013-07-08 09:37:19 +020011 * SPDX-License-Identifier: GPL-2.0+
Sergei Poselenov9531a232010-09-09 23:03:31 +020012 */
13
14#include <common.h>
15#include <mpc5xxx.h>
16#include <pci.h>
17#include <asm/processor.h>
18#include <asm/io.h>
19#include <libfdt.h>
20#include <netdev.h>
Ilya Yanokcb5639c2010-09-09 23:03:33 +020021#include <led-display.h>
Ilya Yanok92d1a402010-09-09 23:03:34 +020022#include <linux/err.h>
Sergei Poselenov9531a232010-09-09 23:03:31 +020023
24#include "mt46v32m16.h"
25
26#ifndef CONFIG_SYS_RAMBOOT
27static void sdram_start (int hi_addr)
28{
29 long hi_addr_bit = hi_addr ? 0x01000000 : 0;
30 long control = SDRAM_CONTROL | hi_addr_bit;
31
32 /* unlock mode register */
33 out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000000);
34 __asm__ volatile ("sync");
35
36 /* precharge all banks */
37 out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
38 __asm__ volatile ("sync");
39
40#if SDRAM_DDR
41 /* set mode register: extended mode */
42 out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_EMODE);
43 __asm__ volatile ("sync");
44
45 /* set mode register: reset DLL */
46 out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE | 0x04000000);
47 __asm__ volatile ("sync");
48#endif
49
50 /* precharge all banks */
51 out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000002);
52 __asm__ volatile ("sync");
53
54 /* auto refresh */
55 out_be32((void *)MPC5XXX_SDRAM_CTRL, control | 0x80000004);
56 __asm__ volatile ("sync");
57
58 /* set mode register */
59 out_be32((void *)MPC5XXX_SDRAM_MODE, SDRAM_MODE);
60 __asm__ volatile ("sync");
61
62 /* normal operation */
63 out_be32((void *)MPC5XXX_SDRAM_CTRL, control);
64 __asm__ volatile ("sync");
65}
66#endif
67
68/*
69 * ATTENTION: Although partially referenced initdram does NOT make real use
70 * use of CONFIG_SYS_SDRAM_BASE. The code does not work if CONFIG_SYS_SDRAM_BASE
71 * is something else than 0x00000000.
72 */
73
74phys_size_t initdram (int board_type)
75{
76 ulong dramsize = 0;
77 uint svr, pvr;
78
79#ifndef CONFIG_SYS_RAMBOOT
80 ulong test1, test2;
81
82 /* setup SDRAM chip selects */
83 out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0x0000001e); /* 2GB at 0x0 */
84 out_be32((void *)MPC5XXX_SDRAM_CS1CFG, 0x80000000); /* disabled */
85 __asm__ volatile ("sync");
86
87 /* setup config registers */
88 out_be32((void *)MPC5XXX_SDRAM_CONFIG1, SDRAM_CONFIG1);
89 out_be32((void *)MPC5XXX_SDRAM_CONFIG2, SDRAM_CONFIG2);
90 __asm__ volatile ("sync");
91
92#if SDRAM_DDR
93 /* set tap delay */
94 out_be32((void *)MPC5XXX_CDM_PORCFG, SDRAM_TAPDELAY);
95 __asm__ volatile ("sync");
96#endif
97
98 /* find RAM size using SDRAM CS0 only */
99 sdram_start(0);
100 test1 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
101 sdram_start(1);
102 test2 = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, 0x80000000);
103 if (test1 > test2) {
104 sdram_start(0);
105 dramsize = test1;
106 } else {
107 dramsize = test2;
108 }
109
110 /* memory smaller than 1MB is impossible */
111 if (dramsize < (1 << 20)) {
112 dramsize = 0;
113 }
114
115 /* set SDRAM CS0 size according to the amount of RAM found */
116 if (dramsize > 0) {
117 out_be32((void *)MPC5XXX_SDRAM_CS0CFG,
118 0x13 + __builtin_ffs(dramsize >> 20) - 1);
119 } else {
120 out_be32((void *)MPC5XXX_SDRAM_CS0CFG, 0); /* disabled */
121 }
122
123#else /* CONFIG_SYS_RAMBOOT */
124
125 /* retrieve size of memory connected to SDRAM CS0 */
126 dramsize = in_be32((void *)MPC5XXX_SDRAM_CS0CFG) & 0xFF;
127 if (dramsize >= 0x13) {
128 dramsize = (1 << (dramsize - 0x13)) << 20;
129 } else {
130 dramsize = 0;
131 }
132
133#endif /* CONFIG_SYS_RAMBOOT */
134
135 /*
136 * On MPC5200B we need to set the special configuration delay in the
137 * DDR controller. Please refer to Freescale's AN3221 "MPC5200B SDRAM
138 * Initialization and Configuration", 3.3.1 SDelay--MBAR + 0x0190:
139 *
140 * "The SDelay should be written to a value of 0x00000004. It is
141 * required to account for changes caused by normal wafer processing
142 * parameters."
143 */
144 svr = get_svr();
145 pvr = get_pvr();
146 if ((SVR_MJREV(svr) >= 2) &&
147 (PVR_MAJ(pvr) == 1) && (PVR_MIN(pvr) == 4)) {
148
149 out_be32((void *)MPC5XXX_SDRAM_SDELAY, 0x04);
150 __asm__ volatile ("sync");
151 }
152
153 return dramsize;
154}
155
156int checkboard (void)
157{
158 puts ("Board: A4M072\n");
159 return 0;
160}
161
162#ifdef CONFIG_PCI
163static struct pci_controller hose;
164
165extern void pci_mpc5xxx_init(struct pci_controller *);
166
167void pci_init_board(void)
168{
169 pci_mpc5xxx_init(&hose);
170}
171#endif
172
173#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
Simon Glasse895a4b2014-10-23 18:58:47 -0600174int ft_board_setup(void *blob, bd_t *bd)
Sergei Poselenov9531a232010-09-09 23:03:31 +0200175{
176 ft_cpu_setup(blob, bd);
Simon Glasse895a4b2014-10-23 18:58:47 -0600177
178 return 0;
Sergei Poselenov9531a232010-09-09 23:03:31 +0200179}
180#endif
181
182int board_eth_init(bd_t *bis)
183{
184 int rv, num_if = 0;
185
186 /* Initialize TSECs first */
187 if ((rv = cpu_eth_init(bis)) >= 0)
188 num_if += rv;
189 else
190 printf("ERROR: failed to initialize FEC.\n");
191
192 if ((rv = pci_eth_init(bis)) >= 0)
193 num_if += rv;
194 else
195 printf("ERROR: failed to initialize PCI Ethernet.\n");
196
197 return num_if;
198}
199/*
200 * Miscellaneous late-boot configurations
201 *
202 * Initialize EEPROM write-protect GPIO pin.
203 */
204int misc_init_r(void)
205{
206#if defined(CONFIG_SYS_EEPROM_WREN)
207 /* Enable GPIO pin */
208 setbits_be32((void *)MPC5XXX_WU_GPIO_ENABLE, CONFIG_SYS_EEPROM_WP);
209 /* Set direction, output */
210 setbits_be32((void *)MPC5XXX_WU_GPIO_DIR, CONFIG_SYS_EEPROM_WP);
211 /* De-assert write enable */
212 setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
213#endif
214 return 0;
215}
216#if defined(CONFIG_SYS_EEPROM_WREN)
217/* Input: <dev_addr> I2C address of EEPROM device to enable.
218 * <state> -1: deliver current state
219 * 0: disable write
220 * 1: enable write
221 * Returns: -1: wrong device address
222 * 0: dis-/en- able done
223 * 0/1: current state if <state> was -1.
224 */
225int eeprom_write_enable (unsigned dev_addr, int state)
226{
227 if (CONFIG_SYS_I2C_EEPROM_ADDR != dev_addr) {
228 return -1;
229 } else {
230 switch (state) {
231 case 1:
232 /* Enable write access */
233 clrbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
234 state = 0;
235 break;
236 case 0:
237 /* Disable write access */
238 setbits_be32((void *)MPC5XXX_WU_GPIO_DATA_O, CONFIG_SYS_EEPROM_WP);
239 state = 0;
240 break;
241 default:
242 /* Read current status back. */
243 state = (0 == (in_be32((void *)MPC5XXX_WU_GPIO_DATA_O) &
244 CONFIG_SYS_EEPROM_WP));
245 break;
246 }
247 }
248 return state;
249}
250#endif
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200251
252#ifdef CONFIG_CMD_DISPLAY
253#define DISPLAY_BUF_SIZE 2
254static u8 display_buf[DISPLAY_BUF_SIZE];
255static u8 display_putc_pos;
256static u8 display_out_pos;
257
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200258void display_set(int cmd) {
259
260 if (cmd & DISPLAY_CLEAR) {
261 display_buf[0] = display_buf[1] = 0;
262 }
263
264 if (cmd & DISPLAY_HOME) {
265 display_putc_pos = 0;
266 }
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200267}
268
269#define SEG_A (1<<0)
270#define SEG_B (1<<1)
271#define SEG_C (1<<2)
272#define SEG_D (1<<3)
273#define SEG_E (1<<4)
274#define SEG_F (1<<5)
275#define SEG_G (1<<6)
276#define SEG_P (1<<7)
277#define SEG__ 0
278
279/*
280 * +- A -+
281 * | |
282 * F B
283 * | |
284 * +- G -+
285 * | |
286 * E C
287 * | |
288 * +- D -+ P
289 *
290 * 0..9 index 0..9
291 * A..Z index 10..35
292 * - index 36
293 * _ index 37
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200294 * . index 38
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200295 */
296
297#define SYMBOL_DASH (36)
298#define SYMBOL_UNDERLINE (37)
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200299#define SYMBOL_DOT (38)
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200300
301static u8 display_char2seg7_tbl[]=
302{
303 SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, /* 0 */
304 SEG_B | SEG_C, /* 1 */
305 SEG_A | SEG_B | SEG_D | SEG_E | SEG_G, /* 2 */
306 SEG_A | SEG_B | SEG_C | SEG_D | SEG_G, /* 3 */
307 SEG_B | SEG_C | SEG_F | SEG_G, /* 4 */
308 SEG_A | SEG_C | SEG_D | SEG_F | SEG_G, /* 5 */
309 SEG_A | SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* 6 */
310 SEG_A | SEG_B | SEG_C, /* 7 */
311 SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* 8 */
312 SEG_A | SEG_B | SEG_C | SEG_D | SEG_F | SEG_G, /* 9 */
313 SEG_A | SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, /* A */
314 SEG_C | SEG_D | SEG_E | SEG_F | SEG_G, /* b */
315 SEG_A | SEG_D | SEG_E | SEG_F, /* C */
316 SEG_B | SEG_C | SEG_D | SEG_E | SEG_G, /* d */
317 SEG_A | SEG_D | SEG_E | SEG_F | SEG_G, /* E */
318 SEG_A | SEG_E | SEG_F | SEG_G, /* F */
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200319 0, /* g - not displayed */
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200320 SEG_B | SEG_C | SEG_E | SEG_F | SEG_G, /* H */
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200321 SEG_B | SEG_C, /* I */
322 0, /* J - not displayed */
323 0, /* K - not displayed */
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200324 SEG_D | SEG_E | SEG_F, /* L */
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200325 0, /* m - not displayed */
326 0, /* n - not displayed */
327 SEG_A | SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, /* O */
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200328 SEG_A | SEG_B | SEG_E | SEG_F | SEG_G, /* P */
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200329 0, /* q - not displayed */
330 0, /* r - not displayed */
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200331 SEG_A | SEG_C | SEG_D | SEG_F | SEG_G, /* S */
332 SEG_D | SEG_E | SEG_F | SEG_G, /* t */
333 SEG_B | SEG_C | SEG_D | SEG_E | SEG_F, /* U */
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200334 0, /* V - not displayed */
335 0, /* w - not displayed */
336 0, /* X - not displayed */
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200337 SEG_B | SEG_C | SEG_D | SEG_F | SEG_G, /* Y */
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200338 0, /* Z - not displayed */
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200339 SEG_G, /* - */
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200340 SEG_D, /* _ */
341 SEG_P /* . */
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200342};
343
344/* Convert char to the LED segments representation */
345static u8 display_char2seg7(char c)
346{
347 u8 val = 0;
348
349 if (c >= '0' && c <= '9')
350 c -= '0';
351 else if (c >= 'a' && c <= 'z')
352 c -= 'a' - 10;
353 else if (c >= 'A' && c <= 'Z')
354 c -= 'A' - 10;
355 else if (c == '-')
356 c = SYMBOL_DASH;
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200357 else if (c == '_')
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200358 c = SYMBOL_UNDERLINE;
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200359 else if (c == '.')
360 c = SYMBOL_DOT;
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200361 else
362 c = ' '; /* display unsupported symbols as space */
363
364 if (c != ' ')
365 val = display_char2seg7_tbl[(int)c];
366
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200367 return val;
368}
369
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200370int display_putc(char c)
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200371{
372 if (display_putc_pos >= DISPLAY_BUF_SIZE)
373 return -1;
374
375 display_buf[display_putc_pos++] = display_char2seg7(c);
376 /* one-symbol message should be steady */
377 if (display_putc_pos == 1)
378 display_buf[display_putc_pos] = display_char2seg7(c);
379
380 return c;
381}
382
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200383/*
Ilya Yanok92d1a402010-09-09 23:03:34 +0200384 * Flush current symbol to the LED display hardware
385 */
386static inline void display_flush(void)
387{
388 u32 val = display_buf[display_out_pos];
389
390 val |= (val << 8) | (val << 16) | (val << 24);
391 out_be32((void *)CONFIG_SYS_DISP_CHR_RAM, val);
392}
393
394/*
395 * Output contents of the software display buffer to the LED display every 0.5s
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200396 */
397void board_show_activity(ulong timestamp)
398{
399 static ulong last;
400 static u8 once;
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200401
402 if (!once || (timestamp - last >= (CONFIG_SYS_HZ / 2))) {
Ilya Yanok92d1a402010-09-09 23:03:34 +0200403 display_flush();
Ilya Yanokcb5639c2010-09-09 23:03:33 +0200404 display_out_pos ^= 1;
405 last = timestamp;
406 once = 1;
407 }
408}
409
410/*
411 * Empty fake function
412 */
413void show_activity(int arg)
414{
415}
416#endif
Ilya Yanok92d1a402010-09-09 23:03:34 +0200417#if defined (CONFIG_SHOW_BOOT_PROGRESS)
418static int a4m072_status2code(int status, char *buf)
419{
420 char c = 0;
421
422 if (((status > 0) && (status <= 8)) ||
423 ((status >= 100) && (status <= 108)) ||
424 ((status < 0) && (status >= -9)) ||
425 (status == -100) || (status == -101) ||
426 ((status <= -103) && (status >= -113))) {
427 c = '5';
428 } else if (((status >= 9) && (status <= 14)) ||
429 ((status >= 120) && (status <= 123)) ||
430 ((status >= 125) && (status <= 129)) ||
431 ((status >= -13) && (status <= -10)) ||
432 (status == -120) || (status == -122) ||
433 ((status <= -124) && (status >= -127)) ||
434 (status == -129)) {
435 c = '8';
436 } else if (status == 15) {
437 c = '9';
438 } else if ((status <= -30) && (status >= -32)) {
439 c = 'A';
440 } else if (((status <= -35) && (status >= -40)) ||
441 ((status <= -42) && (status >= -51)) ||
442 ((status <= -53) && (status >= -58)) ||
443 (status == -64) ||
444 ((status <= -80) && (status >= -83)) ||
445 (status == -130) || (status == -140) ||
446 (status == -150)) {
447 c = 'B';
448 }
449
450 if (c == 0)
451 return -EINVAL;
452
453 buf[0] = (status < 0) ? '-' : c;
454 buf[1] = c;
455
456 return 0;
457}
458
459void show_boot_progress(int status)
460{
461 char buf[2];
462
463 if (a4m072_status2code(status, buf) < 0)
464 return;
465
Ilya Yanok8f54dd42010-10-21 17:20:10 +0200466 display_putc(buf[0]);
467 display_putc(buf[1]);
Ilya Yanok92d1a402010-09-09 23:03:34 +0200468 display_set(DISPLAY_HOME);
469 display_out_pos = 0; /* reset output position */
470
471 /* we want to flush status 15 now */
Simon Glass578ac1e2011-12-10 11:07:54 +0000472 if (status == BOOTSTAGE_ID_RUN_OS)
Ilya Yanok92d1a402010-09-09 23:03:34 +0200473 display_flush();
474}
475#endif