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>
18 #include <timestamp.h>
19 #include <status_led.h>
23 #include <asm/mach-common/bits/mpu.h>
25 #ifdef CONFIG_CMD_NAND
26 #include <nand.h> /* cannot even include nand.h if it isnt configured */
29 #if defined(CONFIG_POST)
34 DECLARE_GLOBAL_DATA_PTR;
36 const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")";
38 __attribute__((always_inline))
39 static inline void serial_early_puts(const char *s)
41 #ifdef CONFIG_DEBUG_EARLY_SERIAL
42 serial_puts("Early: ");
47 static void *mem_malloc_start, *mem_malloc_end, *mem_malloc_brk;
49 static void mem_malloc_init(void)
51 mem_malloc_start = (void *)CONFIG_SYS_MALLOC_BASE;
52 mem_malloc_end = (void *)(CONFIG_SYS_MALLOC_BASE + CONFIG_SYS_MALLOC_LEN);
53 mem_malloc_brk = mem_malloc_start;
54 memset(mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
57 void *sbrk(ptrdiff_t increment)
59 void *old = mem_malloc_brk;
60 void *new = old + increment;
62 if (new < mem_malloc_start || new > mem_malloc_end)
70 static int display_banner(void)
72 printf("\n\n%s\n\n", version_string);
73 printf("CPU: ADSP " MK_STR(CONFIG_BFIN_CPU) " (Detected Rev: 0.%d)\n", bfin_revid());
77 static int init_baudrate(void)
80 int i = getenv_r("baudrate", baudrate, sizeof(baudrate));
81 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
82 ? simple_strtoul(baudrate, NULL, 10)
87 static void display_global_data(void)
89 #ifdef CONFIG_DEBUG_EARLY_SERIAL
92 printf(" gd: %x\n", gd);
93 printf(" |-flags: %x\n", gd->flags);
94 printf(" |-board_type: %x\n", gd->board_type);
95 printf(" |-baudrate: %i\n", gd->baudrate);
96 printf(" |-have_console: %x\n", gd->have_console);
97 printf(" |-ram_size: %x\n", gd->ram_size);
98 printf(" |-reloc_off: %x\n", gd->reloc_off);
99 printf(" |-env_addr: %x\n", gd->env_addr);
100 printf(" |-env_valid: %x\n", gd->env_valid);
101 printf(" |-jt(%x): %x\n", gd->jt, *(gd->jt));
102 printf(" \\-bd: %x\n", gd->bd);
103 printf(" |-bi_baudrate: %x\n", bd->bi_baudrate);
104 printf(" |-bi_ip_addr: %x\n", bd->bi_ip_addr);
105 printf(" |-bi_enetaddr: %x %x %x %x %x %x\n",
106 bd->bi_enetaddr[0], bd->bi_enetaddr[1],
107 bd->bi_enetaddr[2], bd->bi_enetaddr[3],
108 bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
109 printf(" |-bi_boot_params: %x\n", bd->bi_boot_params);
110 printf(" |-bi_memstart: %x\n", bd->bi_memstart);
111 printf(" |-bi_memsize: %x\n", bd->bi_memsize);
112 printf(" |-bi_flashstart: %x\n", bd->bi_flashstart);
113 printf(" |-bi_flashsize: %x\n", bd->bi_flashsize);
114 printf(" \\-bi_flashoffset: %x\n", bd->bi_flashoffset);
118 #define CPLB_PAGE_SIZE (4 * 1024 * 1024)
119 #define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1))
120 void init_cplbtables(void)
122 volatile uint32_t *ICPLB_ADDR, *ICPLB_DATA;
123 volatile uint32_t *DCPLB_ADDR, *DCPLB_DATA;
124 uint32_t extern_memory;
127 void icplb_add(uint32_t addr, uint32_t data)
129 *(ICPLB_ADDR + i) = addr;
130 *(ICPLB_DATA + i) = data;
132 void dcplb_add(uint32_t addr, uint32_t data)
134 *(DCPLB_ADDR + i) = addr;
135 *(DCPLB_DATA + i) = data;
138 /* populate a few common entries ... we'll let
139 * the memory map and cplb exception handler do
140 * the rest of the work.
143 ICPLB_ADDR = (uint32_t *)ICPLB_ADDR0;
144 ICPLB_DATA = (uint32_t *)ICPLB_DATA0;
145 DCPLB_ADDR = (uint32_t *)DCPLB_ADDR0;
146 DCPLB_DATA = (uint32_t *)DCPLB_DATA0;
148 icplb_add(0xFFA00000, L1_IMEMORY);
149 dcplb_add(0xFF800000, L1_DMEMORY);
152 icplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_IKERNEL);
153 dcplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_DKERNEL);
156 /* If the monitor crosses a 4 meg boundary, we'll need
157 * to lock two entries for it.
159 if ((CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK) != ((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK)) {
160 icplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_IKERNEL);
161 dcplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_DKERNEL);
165 icplb_add(0x20000000, SDRAM_INON_CHBL);
166 dcplb_add(0x20000000, SDRAM_EBIU);
169 /* Add entries for the rest of external RAM up to the bootrom */
172 #ifdef CONFIG_DEBUG_NULL_PTR
173 icplb_add(extern_memory, (SDRAM_IKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
174 dcplb_add(extern_memory, (SDRAM_DKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
176 icplb_add(extern_memory, SDRAM_IKERNEL);
177 dcplb_add(extern_memory, SDRAM_DKERNEL);
178 extern_memory += CPLB_PAGE_SIZE;
182 while (i < 16 && extern_memory < (CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK)) {
183 icplb_add(extern_memory, SDRAM_IGENERIC);
184 dcplb_add(extern_memory, SDRAM_DGENERIC);
185 extern_memory += CPLB_PAGE_SIZE;
196 * All attempts to come up with a "common" initialization sequence
197 * that works for all boards and architectures failed: some of the
198 * requirements are just _too_ different. To get rid of the resulting
199 * mess of board dependend #ifdef'ed code we now make the whole
200 * initialization sequence configurable to the user.
202 * The requirements for any new initalization function is simple: it
203 * receives a pointer to the "global data" structure as it's only
204 * argument, and returns an integer return code, where 0 means
205 * "continue" and != 0 means "fatal error, hang the system".
208 extern int exception_init(void);
209 extern int irq_init(void);
210 extern int timer_init(void);
212 void board_init_f(ulong bootflag)
218 #ifdef CONFIG_BOARD_EARLY_INIT_F
219 serial_early_puts("Board early init flash\n");
220 board_early_init_f();
223 serial_early_puts("Init CPLB tables\n");
226 serial_early_puts("Exceptions setup\n");
229 #ifndef CONFIG_ICACHE_OFF
230 serial_early_puts("Turn on ICACHE\n");
233 #ifndef CONFIG_DCACHE_OFF
234 serial_early_puts("Turn on DCACHE\n");
239 if (CONFIG_SYS_GBL_DATA_SIZE < sizeof(*gd))
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);
246 /* Board data initialization */
247 addr = (CONFIG_SYS_GBL_DATA_ADDR + sizeof(gd_t));
249 /* Align to 4 byte boundary */
253 memset((void *)bd, 0, sizeof(bd_t));
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();
263 serial_early_puts("IRQ init\n");
265 serial_early_puts("Environment init\n");
267 serial_early_puts("Baudrate init\n");
269 serial_early_puts("Serial init\n");
271 serial_early_puts("Console init flash\n");
273 serial_early_puts("End of early debugging\n");
279 printf("Clock: VCO: %s MHz, ", strmhz(buf, get_vco()));
280 printf("Core: %s MHz, ", strmhz(buf, get_cclk()));
281 printf("System: %s MHz\n", strmhz(buf, get_sclk()));
284 print_size(initdram(0), "\n");
285 #if defined(CONFIG_POST)
287 post_bootmode_init();
288 post_run(NULL, POST_ROM | post_bootmode_get(0));
291 board_init_r((gd_t *) gd, 0x20000010);
294 void board_init_r(gd_t * id, ulong dest_addr)
296 extern void malloc_bin_reloc(void);
300 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
303 #if defined(CONFIG_POST)
304 post_output_backlog();
308 #if !defined(CONFIG_SYS_NO_FLASH)
309 /* Initialize the flash and protect u-boot by default */
310 extern flash_info_t flash_info[];
311 ulong size = flash_init();
313 print_size(size, "\n");
314 flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_FLASH_BASE,
315 CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN - 1,
317 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
318 bd->bi_flashsize = size;
319 bd->bi_flashoffset = 0;
321 bd->bi_flashstart = 0;
322 bd->bi_flashsize = 0;
323 bd->bi_flashoffset = 0;
325 /* initialize malloc() area */
329 #ifdef CONFIG_CMD_NAND
331 nand_init(); /* go init the NAND */
334 /* relocate environment function pointers etc. */
337 #ifdef CONFIG_CMD_NET
338 /* board MAC address */
339 s = getenv("ethaddr");
341 # ifndef CONFIG_ETHADDR
343 if (!board_get_enetaddr(bd->bi_enetaddr)) {
345 sprintf(nid, "%02X:%02X:%02X:%02X:%02X:%02X",
346 bd->bi_enetaddr[0], bd->bi_enetaddr[1],
347 bd->bi_enetaddr[2], bd->bi_enetaddr[3],
348 bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
349 setenv("ethaddr", nid);
356 for (i = 0; i < 6; ++i) {
357 bd->bi_enetaddr[i] = simple_strtoul(s, &e, 16);
358 s = (*e) ? e + 1 : e;
363 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
366 /* Initialize devices */
370 /* Initialize the console (after the relocation and devices init) */
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);
378 /* Initialize from environment */
379 if ((s = getenv("loadaddr")) != NULL)
380 load_addr = simple_strtoul(s, NULL, 16);
381 #ifdef CONFIG_CMD_NET
382 if ((s = getenv("bootfile")) != NULL)
383 copy_filename(BootFile, s, sizeof(BootFile));
386 #if defined(CONFIG_MISC_INIT_R)
387 /* miscellaneous platform dependent initialisations */
391 #ifdef CONFIG_CMD_NET
393 eth_initialize(gd->bd);
394 if ((s = getenv("ethaddr"))) {
395 # ifndef CONFIG_NET_MULTI
398 for (i = 0; i < 6; ++i) {
399 bd->bi_enetaddr[i] = simple_strtoul(s, &e, 16);
400 s = (*e) ? e + 1 : e;
403 printf("MAC: %02X:%02X:%02X:%02X:%02X:%02X\n",
404 bd->bi_enetaddr[0], bd->bi_enetaddr[1], bd->bi_enetaddr[2],
405 bd->bi_enetaddr[3], bd->bi_enetaddr[4], bd->bi_enetaddr[5]);
409 display_global_data();
411 #if defined(CONFIG_POST)
413 post_run(NULL, POST_RAM | post_bootmode_get(0));
416 /* main_loop() can return to retry autoboot, if so just run it again. */
423 #ifdef CONFIG_STATUS_LED
424 status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
425 status_led_set(STATUS_LED_CRASH, STATUS_LED_BLINKING);
427 puts("### ERROR ### Please RESET the board ###\n");
429 /* If a JTAG emulator is hooked up, we'll automatically trigger
430 * a breakpoint in it. If one isn't, this is just a NOP.