2 * U-boot - board.c First C file to be called contains init routines
4 * Copyright (c) 2005-2008 Analog Devices Inc.
6 * (C) Copyright 2000-2004
7 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
9 * Licensed under the GPL-2 or later.
15 #include <environment.h>
22 #include <asm/mach-common/bits/mpu.h>
24 #ifdef CONFIG_CMD_NAND
25 #include <nand.h> /* cannot even include nand.h if it isnt configured */
28 #if defined(CONFIG_POST)
33 DECLARE_GLOBAL_DATA_PTR;
35 const char version_string[] = U_BOOT_VERSION " (" __DATE__ " - " __TIME__ ")";
37 __attribute__((always_inline))
38 static inline void serial_early_puts(const char *s)
40 #ifdef CONFIG_DEBUG_EARLY_SERIAL
41 serial_puts("Early: ");
46 /* Get the input voltage */
47 static u_long get_vco(void)
52 msel = (*pPLL_CTL >> 9) & 0x3F;
56 vco = CONFIG_CLKIN_HZ;
57 vco >>= (1 & *pPLL_CTL); /* DF bit */
62 /* Get the Core clock */
67 return CONFIG_CLKIN_HZ;
70 csel = ((ssel >> 4) & 0x03);
72 if (ssel && ssel < (1 << csel)) /* SCLK > CCLK */
73 return get_vco() / ssel;
74 return get_vco() >> csel;
77 /* Get the System clock */
83 return CONFIG_CLKIN_HZ;
85 ssel = (*pPLL_DIV & 0xf);
87 return get_vco() / ssel;
90 static void *mem_malloc_start, *mem_malloc_end, *mem_malloc_brk;
92 static void mem_malloc_init(void)
94 mem_malloc_start = (void *)CONFIG_SYS_MALLOC_BASE;
95 mem_malloc_end = (void *)(CONFIG_SYS_MALLOC_BASE + CONFIG_SYS_MALLOC_LEN);
96 mem_malloc_brk = mem_malloc_start;
97 memset(mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
100 void *sbrk(ptrdiff_t increment)
102 void *old = mem_malloc_brk;
103 void *new = old + increment;
105 if (new < mem_malloc_start || new > mem_malloc_end)
108 mem_malloc_brk = new;
113 static int display_banner(void)
115 printf("\n\n%s\n\n", version_string);
116 printf("CPU: ADSP " MK_STR(CONFIG_BFIN_CPU) " (Detected Rev: 0.%d)\n", bfin_revid());
120 static int init_baudrate(void)
123 int i = getenv_r("baudrate", baudrate, sizeof(baudrate));
124 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
125 ? simple_strtoul(baudrate, NULL, 10)
130 static void display_global_data(void)
132 #ifdef CONFIG_DEBUG_EARLY_SERIAL
135 printf(" gd: %x\n", gd);
136 printf(" |-flags: %x\n", gd->flags);
137 printf(" |-board_type: %x\n", gd->board_type);
138 printf(" |-baudrate: %i\n", gd->baudrate);
139 printf(" |-have_console: %x\n", gd->have_console);
140 printf(" |-ram_size: %x\n", gd->ram_size);
141 printf(" |-reloc_off: %x\n", gd->reloc_off);
142 printf(" |-env_addr: %x\n", gd->env_addr);
143 printf(" |-env_valid: %x\n", gd->env_valid);
144 printf(" |-jt(%x): %x\n", gd->jt, *(gd->jt));
145 printf(" \\-bd: %x\n", gd->bd);
146 printf(" |-bi_baudrate: %x\n", bd->bi_baudrate);
147 printf(" |-bi_ip_addr: %x\n", bd->bi_ip_addr);
148 printf(" |-bi_enetaddr: %x %x %x %x %x %x\n",
149 bd->bi_enetaddr[0], bd->bi_enetaddr[1],
150 bd->bi_enetaddr[2], bd->bi_enetaddr[3],
151 bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
152 printf(" |-bi_boot_params: %x\n", bd->bi_boot_params);
153 printf(" |-bi_memstart: %x\n", bd->bi_memstart);
154 printf(" |-bi_memsize: %x\n", bd->bi_memsize);
155 printf(" |-bi_flashstart: %x\n", bd->bi_flashstart);
156 printf(" |-bi_flashsize: %x\n", bd->bi_flashsize);
157 printf(" \\-bi_flashoffset: %x\n", bd->bi_flashoffset);
161 #define CPLB_PAGE_SIZE (4 * 1024 * 1024)
162 #define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1))
163 void init_cplbtables(void)
165 volatile uint32_t *ICPLB_ADDR, *ICPLB_DATA;
166 volatile uint32_t *DCPLB_ADDR, *DCPLB_DATA;
167 uint32_t extern_memory;
170 void icplb_add(uint32_t addr, uint32_t data)
172 *(ICPLB_ADDR + i) = addr;
173 *(ICPLB_DATA + i) = data;
175 void dcplb_add(uint32_t addr, uint32_t data)
177 *(DCPLB_ADDR + i) = addr;
178 *(DCPLB_DATA + i) = data;
181 /* populate a few common entries ... we'll let
182 * the memory map and cplb exception handler do
183 * the rest of the work.
186 ICPLB_ADDR = (uint32_t *)ICPLB_ADDR0;
187 ICPLB_DATA = (uint32_t *)ICPLB_DATA0;
188 DCPLB_ADDR = (uint32_t *)DCPLB_ADDR0;
189 DCPLB_DATA = (uint32_t *)DCPLB_DATA0;
191 icplb_add(0xFFA00000, L1_IMEMORY);
192 dcplb_add(0xFF800000, L1_DMEMORY);
195 icplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_IKERNEL);
196 dcplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_DKERNEL);
199 /* If the monitor crosses a 4 meg boundary, we'll need
200 * to lock two entries for it.
202 if ((CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK) != ((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK)) {
203 icplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_IKERNEL);
204 dcplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_DKERNEL);
208 icplb_add(0x20000000, SDRAM_INON_CHBL);
209 dcplb_add(0x20000000, SDRAM_EBIU);
212 /* Add entries for the rest of external RAM up to the bootrom */
215 #ifdef CONFIG_DEBUG_NULL_PTR
216 icplb_add(extern_memory, (SDRAM_IKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
217 dcplb_add(extern_memory, (SDRAM_DKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
219 icplb_add(extern_memory, SDRAM_IKERNEL);
220 dcplb_add(extern_memory, SDRAM_DKERNEL);
221 extern_memory += CPLB_PAGE_SIZE;
225 while (i < 16 && extern_memory < (CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK)) {
226 icplb_add(extern_memory, SDRAM_IGENERIC);
227 dcplb_add(extern_memory, SDRAM_DGENERIC);
228 extern_memory += CPLB_PAGE_SIZE;
239 * All attempts to come up with a "common" initialization sequence
240 * that works for all boards and architectures failed: some of the
241 * requirements are just _too_ different. To get rid of the resulting
242 * mess of board dependend #ifdef'ed code we now make the whole
243 * initialization sequence configurable to the user.
245 * The requirements for any new initalization function is simple: it
246 * receives a pointer to the "global data" structure as it's only
247 * argument, and returns an integer return code, where 0 means
248 * "continue" and != 0 means "fatal error, hang the system".
251 extern int exception_init(void);
252 extern int irq_init(void);
253 extern int rtc_init(void);
254 extern int timer_init(void);
256 void board_init_f(ulong bootflag)
261 #ifdef CONFIG_BOARD_EARLY_INIT_F
262 serial_early_puts("Board early init flash\n");
263 board_early_init_f();
266 serial_early_puts("Init CPLB tables\n");
269 serial_early_puts("Exceptions setup\n");
272 #ifndef CONFIG_ICACHE_OFF
273 serial_early_puts("Turn on ICACHE\n");
276 #ifndef CONFIG_DCACHE_OFF
277 serial_early_puts("Turn on DCACHE\n");
281 serial_early_puts("Init global data\n");
282 gd = (gd_t *) (CONFIG_SYS_GBL_DATA_ADDR);
283 memset((void *)gd, 0, sizeof(gd_t));
285 /* Board data initialization */
286 addr = (CONFIG_SYS_GBL_DATA_ADDR + sizeof(gd_t));
288 /* Align to 4 byte boundary */
292 memset((void *)bd, 0, sizeof(bd_t));
294 bd->bi_r_version = version_string;
295 bd->bi_cpu = MK_STR(CONFIG_BFIN_CPU);
296 bd->bi_board_name = BFIN_BOARD_NAME;
297 bd->bi_vco = get_vco();
298 bd->bi_cclk = get_cclk();
299 bd->bi_sclk = get_sclk();
302 serial_early_puts("IRQ init\n");
304 serial_early_puts("Environment init\n");
306 serial_early_puts("Baudrate init\n");
308 serial_early_puts("Serial init\n");
310 serial_early_puts("Console init flash\n");
312 serial_early_puts("End of early debugging\n");
316 #if defined(CONFIG_RTC_BFIN) && defined(CONFIG_CMD_DATE)
321 printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n",
322 get_vco() / 1000000, get_cclk() / 1000000, get_sclk() / 1000000);
325 print_size(initdram(0), "\n");
326 #if defined(CONFIG_POST)
328 post_bootmode_init();
329 post_run(NULL, POST_ROM | post_bootmode_get(0));
332 board_init_r((gd_t *) gd, 0x20000010);
335 #if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
336 static int init_func_i2c(void)
339 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
345 void board_init_r(gd_t * id, ulong dest_addr)
347 extern void malloc_bin_reloc(void);
351 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
354 #if defined(CONFIG_POST)
355 post_output_backlog();
359 #if !defined(CONFIG_SYS_NO_FLASH)
360 /* There are some other pointer constants we must deal with */
361 /* configure available FLASH banks */
362 extern flash_info_t flash_info[];
363 ulong size = flash_init();
365 print_size(size, "\n");
366 flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_FLASH_BASE,
367 CONFIG_SYS_FLASH_BASE + 0x1ffff, &flash_info[0]);
368 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
369 bd->bi_flashsize = size;
370 bd->bi_flashoffset = 0;
372 bd->bi_flashstart = 0;
373 bd->bi_flashsize = 0;
374 bd->bi_flashoffset = 0;
376 /* initialize malloc() area */
381 # if ! defined(CONFIG_ENV_IS_IN_EEPROM)
387 /* relocate environment function pointers etc. */
390 #ifdef CONFIG_CMD_NET
391 /* board MAC address */
392 s = getenv("ethaddr");
394 # ifndef CONFIG_ETHADDR
396 if (!board_get_enetaddr(bd->bi_enetaddr)) {
398 sprintf(nid, "%02X:%02X:%02X:%02X:%02X:%02X",
399 bd->bi_enetaddr[0], bd->bi_enetaddr[1],
400 bd->bi_enetaddr[2], bd->bi_enetaddr[3],
401 bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
402 setenv("ethaddr", nid);
409 for (i = 0; i < 6; ++i) {
410 bd->bi_enetaddr[i] = simple_strtoul(s, &e, 16);
411 s = (*e) ? e + 1 : e;
416 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
419 /* Initialize devices */
423 /* Initialize the console (after the relocation and devices init) */
426 /* Initialize from environment */
427 if ((s = getenv("loadaddr")) != NULL)
428 load_addr = simple_strtoul(s, NULL, 16);
429 #ifdef CONFIG_CMD_NET
430 if ((s = getenv("bootfile")) != NULL)
431 copy_filename(BootFile, s, sizeof(BootFile));
434 #ifdef CONFIG_CMD_NAND
436 nand_init(); /* go init the NAND */
439 #if defined(CONFIG_MISC_INIT_R)
440 /* miscellaneous platform dependent initialisations */
444 #ifdef CONFIG_CMD_NET
446 eth_initialize(gd->bd);
447 if (getenv("ethaddr"))
448 printf("MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
449 bd->bi_enetaddr[0], bd->bi_enetaddr[1], bd->bi_enetaddr[2],
450 bd->bi_enetaddr[3], bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
453 #if defined(CONFIG_SOFT_I2C) || defined(CONFIG_HARD_I2C)
457 display_global_data();
459 #if defined(CONFIG_POST)
461 post_run(NULL, POST_RAM | post_bootmode_get(0));
464 /* main_loop() can return to retry autoboot, if so just run it again. */
471 puts("### ERROR ### Please RESET the board ###\n");
473 /* If a JTAG emulator is hooked up, we'll automatically trigger
474 * a breakpoint in it. If one isn't, this is just a NOP.