1 /*
2 * U-boot - board.c First C file to be called contains init routines
3 *
4 * Copyright (c) 2005-2008 Analog Devices Inc.
5 *
6 * (C) Copyright 2000-2004
7 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 *
9 * Licensed under the GPL-2 or later.
10 */
11
12 #include <common.h>
13 #include <command.h>
14 #include <stdio_dev.h>
15 #include <environment.h>
16 #include <malloc.h>
17 #include <mmc.h>
18 #include <net.h>
19 #include <timestamp.h>
20 #include <status_led.h>
21 #include <version.h>
22
23 #include <asm/cplb.h>
24 #include <asm/mach-common/bits/mpu.h>
25 #include <kgdb.h>
26
27 #ifdef CONFIG_CMD_NAND
28 #include <nand.h> /* cannot even include nand.h if it isnt configured */
29 #endif
30
31 #ifdef CONFIG_BITBANGMII
32 #include <miiphy.h>
33 #endif
34
35 #if defined(CONFIG_POST)
36 #include <post.h>
37 int post_flag;
38 #endif
39
40 DECLARE_GLOBAL_DATA_PTR;
41
42 const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")";
43
44 __attribute__((always_inline))
serial_early_puts(const char * s)45 static inline void serial_early_puts(const char *s)
46 {
47 #ifdef CONFIG_DEBUG_EARLY_SERIAL
48 serial_puts("Early: ");
49 serial_puts(s);
50 #endif
51 }
52
display_banner(void)53 static int display_banner(void)
54 {
55 printf("\n\n%s\n\n", version_string);
56 printf("CPU: ADSP " MK_STR(CONFIG_BFIN_CPU) " "
57 "(Detected Rev: 0.%d) "
58 "(%s boot)\n",
59 bfin_revid(),
60 get_bfin_boot_mode(CONFIG_BFIN_BOOT_MODE));
61 return 0;
62 }
63
init_baudrate(void)64 static int init_baudrate(void)
65 {
66 char baudrate[15];
67 int i = getenv_r("baudrate", baudrate, sizeof(baudrate));
68 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
69 ? simple_strtoul(baudrate, NULL, 10)
70 : CONFIG_BAUDRATE;
71 return 0;
72 }
73
display_global_data(void)74 static void display_global_data(void)
75 {
76 bd_t *bd;
77
78 #ifndef CONFIG_DEBUG_EARLY_SERIAL
79 return;
80 #endif
81
82 bd = gd->bd;
83 printf(" gd: %p\n", gd);
84 printf(" |-flags: %lx\n", gd->flags);
85 printf(" |-board_type: %lx\n", gd->board_type);
86 printf(" |-baudrate: %lu\n", gd->baudrate);
87 printf(" |-have_console: %lx\n", gd->have_console);
88 printf(" |-ram_size: %lx\n", gd->ram_size);
89 printf(" |-env_addr: %lx\n", gd->env_addr);
90 printf(" |-env_valid: %lx\n", gd->env_valid);
91 printf(" |-jt(%p): %p\n", gd->jt, *(gd->jt));
92 printf(" \\-bd: %p\n", gd->bd);
93 printf(" |-bi_baudrate: %x\n", bd->bi_baudrate);
94 printf(" |-bi_ip_addr: %lx\n", bd->bi_ip_addr);
95 printf(" |-bi_boot_params: %lx\n", bd->bi_boot_params);
96 printf(" |-bi_memstart: %lx\n", bd->bi_memstart);
97 printf(" |-bi_memsize: %lx\n", bd->bi_memsize);
98 printf(" |-bi_flashstart: %lx\n", bd->bi_flashstart);
99 printf(" |-bi_flashsize: %lx\n", bd->bi_flashsize);
100 printf(" \\-bi_flashoffset: %lx\n", bd->bi_flashoffset);
101 }
102
103 #define CPLB_PAGE_SIZE (4 * 1024 * 1024)
104 #define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1))
init_cplbtables(void)105 void init_cplbtables(void)
106 {
107 volatile uint32_t *ICPLB_ADDR, *ICPLB_DATA;
108 volatile uint32_t *DCPLB_ADDR, *DCPLB_DATA;
109 uint32_t extern_memory;
110 size_t i;
111
112 void icplb_add(uint32_t addr, uint32_t data)
113 {
114 *(ICPLB_ADDR + i) = addr;
115 *(ICPLB_DATA + i) = data;
116 }
117 void dcplb_add(uint32_t addr, uint32_t data)
118 {
119 *(DCPLB_ADDR + i) = addr;
120 *(DCPLB_DATA + i) = data;
121 }
122
123 /* populate a few common entries ... we'll let
124 * the memory map and cplb exception handler do
125 * the rest of the work.
126 */
127 i = 0;
128 ICPLB_ADDR = (uint32_t *)ICPLB_ADDR0;
129 ICPLB_DATA = (uint32_t *)ICPLB_DATA0;
130 DCPLB_ADDR = (uint32_t *)DCPLB_ADDR0;
131 DCPLB_DATA = (uint32_t *)DCPLB_DATA0;
132
133 icplb_add(0xFFA00000, L1_IMEMORY);
134 dcplb_add(0xFF800000, L1_DMEMORY);
135 ++i;
136
137 if (CONFIG_MEM_SIZE) {
138 uint32_t mbase = CONFIG_SYS_MONITOR_BASE;
139 uint32_t mend = mbase + CONFIG_SYS_MONITOR_LEN;
140 mbase &= CPLB_PAGE_MASK;
141 mend &= CPLB_PAGE_MASK;
142
143 icplb_add(mbase, SDRAM_IKERNEL);
144 dcplb_add(mbase, SDRAM_DKERNEL);
145 ++i;
146
147 /*
148 * If the monitor crosses a 4 meg boundary, we'll need
149 * to lock two entries for it. We assume it doesn't
150 * cross two 4 meg boundaries ...
151 */
152 if (mbase != mend) {
153 icplb_add(mend, SDRAM_IKERNEL);
154 dcplb_add(mend, SDRAM_DKERNEL);
155 ++i;
156 }
157 }
158
159 icplb_add(0x20000000, SDRAM_INON_CHBL);
160 dcplb_add(0x20000000, SDRAM_EBIU);
161 ++i;
162
163 /* Add entries for the rest of external RAM up to the bootrom */
164 extern_memory = 0;
165
166 #ifdef CONFIG_DEBUG_NULL_PTR
167 icplb_add(extern_memory, (SDRAM_IKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
168 dcplb_add(extern_memory, (SDRAM_DKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
169 ++i;
170 icplb_add(extern_memory, SDRAM_IKERNEL);
171 dcplb_add(extern_memory, SDRAM_DKERNEL);
172 extern_memory += CPLB_PAGE_SIZE;
173 ++i;
174 #endif
175
176 while (i < 16 && extern_memory < (CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK)) {
177 icplb_add(extern_memory, SDRAM_IGENERIC);
178 dcplb_add(extern_memory, SDRAM_DGENERIC);
179 extern_memory += CPLB_PAGE_SIZE;
180 ++i;
181 }
182 while (i < 16) {
183 icplb_add(0, 0);
184 dcplb_add(0, 0);
185 ++i;
186 }
187 }
188
189 /*
190 * All attempts to come up with a "common" initialization sequence
191 * that works for all boards and architectures failed: some of the
192 * requirements are just _too_ different. To get rid of the resulting
193 * mess of board dependend #ifdef'ed code we now make the whole
194 * initialization sequence configurable to the user.
195 *
196 * The requirements for any new initalization function is simple: it
197 * receives a pointer to the "global data" structure as it's only
198 * argument, and returns an integer return code, where 0 means
199 * "continue" and != 0 means "fatal error, hang the system".
200 */
201
202 extern int watchdog_init(void);
203 extern int exception_init(void);
204 extern int irq_init(void);
205 extern int timer_init(void);
206
board_init_f(ulong bootflag)207 void board_init_f(ulong bootflag)
208 {
209 ulong addr;
210 bd_t *bd;
211 char buf[32];
212
213 #ifdef CONFIG_BOARD_EARLY_INIT_F
214 serial_early_puts("Board early init flash\n");
215 board_early_init_f();
216 #endif
217
218 serial_early_puts("Init CPLB tables\n");
219 init_cplbtables();
220
221 serial_early_puts("Exceptions setup\n");
222 exception_init();
223
224 #ifndef CONFIG_ICACHE_OFF
225 serial_early_puts("Turn on ICACHE\n");
226 icache_enable();
227 #endif
228 #ifndef CONFIG_DCACHE_OFF
229 serial_early_puts("Turn on DCACHE\n");
230 dcache_enable();
231 #endif
232
233 #ifdef CONFIG_WATCHDOG
234 serial_early_puts("Setting up external watchdog\n");
235 watchdog_init();
236 #endif
237
238 #ifdef DEBUG
239 if (CONFIG_SYS_GBL_DATA_SIZE < sizeof(*gd))
240 hang();
241 #endif
242 serial_early_puts("Init global data\n");
243 gd = (gd_t *) (CONFIG_SYS_GBL_DATA_ADDR);
244 memset((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
245
246 /* Board data initialization */
247 addr = (CONFIG_SYS_GBL_DATA_ADDR + sizeof(gd_t));
248
249 /* Align to 4 byte boundary */
250 addr &= ~(4 - 1);
251 bd = (bd_t *) addr;
252 gd->bd = bd;
253 memset((void *)bd, 0, sizeof(bd_t));
254
255 bd->bi_r_version = version_string;
256 bd->bi_cpu = MK_STR(CONFIG_BFIN_CPU);
257 bd->bi_board_name = BFIN_BOARD_NAME;
258 bd->bi_vco = get_vco();
259 bd->bi_cclk = get_cclk();
260 bd->bi_sclk = get_sclk();
261 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
262 bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE;
263
264 /* Initialize */
265 serial_early_puts("IRQ init\n");
266 irq_init();
267 serial_early_puts("Environment init\n");
268 env_init();
269 serial_early_puts("Baudrate init\n");
270 init_baudrate();
271 serial_early_puts("Serial init\n");
272 serial_init();
273 serial_early_puts("Console init flash\n");
274 console_init_f();
275 serial_early_puts("End of early debugging\n");
276 display_banner();
277
278 checkboard();
279 timer_init();
280
281 printf("Clock: VCO: %s MHz, ", strmhz(buf, get_vco()));
282 printf("Core: %s MHz, ", strmhz(buf, get_cclk()));
283 printf("System: %s MHz\n", strmhz(buf, get_sclk()));
284
285 printf("RAM: ");
286 print_size(bd->bi_memsize, "\n");
287 #if defined(CONFIG_POST)
288 post_init_f();
289 post_bootmode_init();
290 post_run(NULL, POST_ROM | post_bootmode_get(0));
291 #endif
292
293 board_init_r((gd_t *) gd, 0x20000010);
294 }
295
board_net_init_r(bd_t * bd)296 static void board_net_init_r(bd_t *bd)
297 {
298 #ifdef CONFIG_BITBANGMII
299 bb_miiphy_init();
300 #endif
301 #ifdef CONFIG_CMD_NET
302 char *s;
303
304 if ((s = getenv("bootfile")) != NULL)
305 copy_filename(BootFile, s, sizeof(BootFile));
306
307 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
308
309 printf("Net: ");
310 eth_initialize(gd->bd);
311 #endif
312 }
313
board_init_r(gd_t * id,ulong dest_addr)314 void board_init_r(gd_t * id, ulong dest_addr)
315 {
316 char *s;
317 bd_t *bd;
318 gd = id;
319 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
320 bd = gd->bd;
321
322 #if defined(CONFIG_POST)
323 post_output_backlog();
324 post_reloc();
325 #endif
326
327 /* initialize malloc() area */
328 mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
329
330 #if !defined(CONFIG_SYS_NO_FLASH)
331 /* Initialize the flash and protect u-boot by default */
332 extern flash_info_t flash_info[];
333 puts("Flash: ");
334 ulong size = flash_init();
335 print_size(size, "\n");
336 flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_FLASH_BASE,
337 CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN - 1,
338 &flash_info[0]);
339 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
340 bd->bi_flashsize = size;
341 bd->bi_flashoffset = 0;
342 #else
343 bd->bi_flashstart = 0;
344 bd->bi_flashsize = 0;
345 bd->bi_flashoffset = 0;
346 #endif
347
348 #ifdef CONFIG_CMD_NAND
349 puts("NAND: ");
350 nand_init(); /* go init the NAND */
351 #endif
352
353 #ifdef CONFIG_GENERIC_MMC
354 puts("MMC: ");
355 mmc_initialize(bd);
356 #endif
357
358 /* relocate environment function pointers etc. */
359 env_relocate();
360
361 /* Initialize stdio devices */
362 stdio_init();
363 jumptable_init();
364
365 /* Initialize the console (after the relocation and devices init) */
366 console_init_r();
367
368 #ifdef CONFIG_CMD_KGDB
369 puts("KGDB: ");
370 kgdb_init();
371 #endif
372
373 #ifdef CONFIG_STATUS_LED
374 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
375 status_led_set(STATUS_LED_CRASH, STATUS_LED_OFF);
376 #endif
377
378 /* Initialize from environment */
379 if ((s = getenv("loadaddr")) != NULL)
380 load_addr = simple_strtoul(s, NULL, 16);
381
382 #if defined(CONFIG_MISC_INIT_R)
383 /* miscellaneous platform dependent initialisations */
384 misc_init_r();
385 #endif
386
387 board_net_init_r(bd);
388
389 display_global_data();
390
391 #if defined(CONFIG_POST)
392 if (post_flag)
393 post_run(NULL, POST_RAM | post_bootmode_get(0));
394 #endif
395
396 if (bfin_os_log_check()) {
397 puts("\nLog buffer from operating system:\n");
398 bfin_os_log_dump();
399 puts("\n");
400 }
401
402 /* main_loop() can return to retry autoboot, if so just run it again. */
403 for (;;)
404 main_loop();
405 }
406
hang(void)407 void hang(void)
408 {
409 #ifdef CONFIG_STATUS_LED
410 status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
411 status_led_set(STATUS_LED_CRASH, STATUS_LED_BLINKING);
412 #endif
413 puts("### ERROR ### Please RESET the board ###\n");
414 while (1)
415 /* If a JTAG emulator is hooked up, we'll automatically trigger
416 * a breakpoint in it. If one isn't, this is just a NOP.
417 */
418 asm("emuexcpt;");
419 }
420