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.
14 #include <stdio_dev.h>
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_init(ulong start, ulong size)
49 mem_malloc_start = start;
50 mem_malloc_end = start + size;
51 mem_malloc_brk = start;
53 memset((void*)mem_malloc_start, 0, size);
56 static int display_banner(void)
58 printf("\n\n%s\n\n", version_string);
59 printf("CPU: ADSP " MK_STR(CONFIG_BFIN_CPU) " "
60 "(Detected Rev: 0.%d) "
63 get_bfin_boot_mode(CONFIG_BFIN_BOOT_MODE));
67 static int init_baudrate(void)
70 int i = getenv_r("baudrate", baudrate, sizeof(baudrate));
71 gd->bd->bi_baudrate = gd->baudrate = (i > 0)
72 ? simple_strtoul(baudrate, NULL, 10)
77 static void display_global_data(void)
79 #ifdef CONFIG_DEBUG_EARLY_SERIAL
82 printf(" gd: %p\n", gd);
83 printf(" |-flags: %lx\n", gd->flags);
84 printf(" |-board_type: %lx\n", gd->board_type);
85 printf(" |-baudrate: %lu\n", gd->baudrate);
86 printf(" |-have_console: %lx\n", gd->have_console);
87 printf(" |-ram_size: %lx\n", gd->ram_size);
88 printf(" |-reloc_off: %lx\n", gd->reloc_off);
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);
104 #define CPLB_PAGE_SIZE (4 * 1024 * 1024)
105 #define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1))
106 void init_cplbtables(void)
108 volatile uint32_t *ICPLB_ADDR, *ICPLB_DATA;
109 volatile uint32_t *DCPLB_ADDR, *DCPLB_DATA;
110 uint32_t extern_memory;
113 void icplb_add(uint32_t addr, uint32_t data)
115 *(ICPLB_ADDR + i) = addr;
116 *(ICPLB_DATA + i) = data;
118 void dcplb_add(uint32_t addr, uint32_t data)
120 *(DCPLB_ADDR + i) = addr;
121 *(DCPLB_DATA + i) = data;
124 /* populate a few common entries ... we'll let
125 * the memory map and cplb exception handler do
126 * the rest of the work.
129 ICPLB_ADDR = (uint32_t *)ICPLB_ADDR0;
130 ICPLB_DATA = (uint32_t *)ICPLB_DATA0;
131 DCPLB_ADDR = (uint32_t *)DCPLB_ADDR0;
132 DCPLB_DATA = (uint32_t *)DCPLB_DATA0;
134 icplb_add(0xFFA00000, L1_IMEMORY);
135 dcplb_add(0xFF800000, L1_DMEMORY);
138 icplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_IKERNEL);
139 dcplb_add(CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK, SDRAM_DKERNEL);
142 /* If the monitor crosses a 4 meg boundary, we'll need
143 * to lock two entries for it.
145 if ((CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK) != ((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK)) {
146 icplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_IKERNEL);
147 dcplb_add((CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) & CPLB_PAGE_MASK, SDRAM_DKERNEL);
151 icplb_add(0x20000000, SDRAM_INON_CHBL);
152 dcplb_add(0x20000000, SDRAM_EBIU);
155 /* Add entries for the rest of external RAM up to the bootrom */
158 #ifdef CONFIG_DEBUG_NULL_PTR
159 icplb_add(extern_memory, (SDRAM_IKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
160 dcplb_add(extern_memory, (SDRAM_DKERNEL & ~PAGE_SIZE_MASK) | PAGE_SIZE_1KB);
162 icplb_add(extern_memory, SDRAM_IKERNEL);
163 dcplb_add(extern_memory, SDRAM_DKERNEL);
164 extern_memory += CPLB_PAGE_SIZE;
168 while (i < 16 && extern_memory < (CONFIG_SYS_MONITOR_BASE & CPLB_PAGE_MASK)) {
169 icplb_add(extern_memory, SDRAM_IGENERIC);
170 dcplb_add(extern_memory, SDRAM_DGENERIC);
171 extern_memory += CPLB_PAGE_SIZE;
182 * All attempts to come up with a "common" initialization sequence
183 * that works for all boards and architectures failed: some of the
184 * requirements are just _too_ different. To get rid of the resulting
185 * mess of board dependend #ifdef'ed code we now make the whole
186 * initialization sequence configurable to the user.
188 * The requirements for any new initalization function is simple: it
189 * receives a pointer to the "global data" structure as it's only
190 * argument, and returns an integer return code, where 0 means
191 * "continue" and != 0 means "fatal error, hang the system".
194 extern int exception_init(void);
195 extern int irq_init(void);
196 extern int timer_init(void);
198 void board_init_f(ulong bootflag)
204 #ifdef CONFIG_BOARD_EARLY_INIT_F
205 serial_early_puts("Board early init flash\n");
206 board_early_init_f();
209 serial_early_puts("Init CPLB tables\n");
212 serial_early_puts("Exceptions setup\n");
215 #ifndef CONFIG_ICACHE_OFF
216 serial_early_puts("Turn on ICACHE\n");
219 #ifndef CONFIG_DCACHE_OFF
220 serial_early_puts("Turn on DCACHE\n");
225 if (CONFIG_SYS_GBL_DATA_SIZE < sizeof(*gd))
228 serial_early_puts("Init global data\n");
229 gd = (gd_t *) (CONFIG_SYS_GBL_DATA_ADDR);
230 memset((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
232 /* Board data initialization */
233 addr = (CONFIG_SYS_GBL_DATA_ADDR + sizeof(gd_t));
235 /* Align to 4 byte boundary */
239 memset((void *)bd, 0, sizeof(bd_t));
241 bd->bi_r_version = version_string;
242 bd->bi_cpu = MK_STR(CONFIG_BFIN_CPU);
243 bd->bi_board_name = BFIN_BOARD_NAME;
244 bd->bi_vco = get_vco();
245 bd->bi_cclk = get_cclk();
246 bd->bi_sclk = get_sclk();
249 serial_early_puts("IRQ init\n");
251 serial_early_puts("Environment init\n");
253 serial_early_puts("Baudrate init\n");
255 serial_early_puts("Serial init\n");
257 serial_early_puts("Console init flash\n");
259 serial_early_puts("End of early debugging\n");
265 printf("Clock: VCO: %s MHz, ", strmhz(buf, get_vco()));
266 printf("Core: %s MHz, ", strmhz(buf, get_cclk()));
267 printf("System: %s MHz\n", strmhz(buf, get_sclk()));
270 print_size(initdram(0), "\n");
271 #if defined(CONFIG_POST)
273 post_bootmode_init();
274 post_run(NULL, POST_ROM | post_bootmode_get(0));
277 board_init_r((gd_t *) gd, 0x20000010);
280 static void board_net_init_r(bd_t *bd)
282 #ifdef CONFIG_CMD_NET
286 if ((s = getenv("bootfile")) != NULL)
287 copy_filename(BootFile, s, sizeof(BootFile));
289 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
292 eth_initialize(gd->bd);
294 eth_getenv_enetaddr("ethaddr", enetaddr);
295 printf("MAC: %pM\n", enetaddr);
299 void board_init_r(gd_t * id, ulong dest_addr)
301 extern void malloc_bin_reloc(void);
305 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
308 #if defined(CONFIG_POST)
309 post_output_backlog();
313 /* initialize malloc() area */
314 mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
317 #if !defined(CONFIG_SYS_NO_FLASH)
318 /* Initialize the flash and protect u-boot by default */
319 extern flash_info_t flash_info[];
321 ulong size = flash_init();
322 print_size(size, "\n");
323 flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_FLASH_BASE,
324 CONFIG_SYS_FLASH_BASE + CONFIG_SYS_MONITOR_LEN - 1,
326 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
327 bd->bi_flashsize = size;
328 bd->bi_flashoffset = 0;
330 bd->bi_flashstart = 0;
331 bd->bi_flashsize = 0;
332 bd->bi_flashoffset = 0;
335 #ifdef CONFIG_CMD_NAND
337 nand_init(); /* go init the NAND */
340 /* relocate environment function pointers etc. */
343 /* Initialize stdio devices */
347 /* Initialize the console (after the relocation and devices init) */
350 #ifdef CONFIG_STATUS_LED
351 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
352 status_led_set(STATUS_LED_CRASH, STATUS_LED_OFF);
355 /* Initialize from environment */
356 if ((s = getenv("loadaddr")) != NULL)
357 load_addr = simple_strtoul(s, NULL, 16);
359 #if defined(CONFIG_MISC_INIT_R)
360 /* miscellaneous platform dependent initialisations */
364 board_net_init_r(bd);
366 display_global_data();
368 #if defined(CONFIG_POST)
370 post_run(NULL, POST_RAM | post_bootmode_get(0));
373 if (bfin_os_log_check()) {
374 puts("\nLog buffer from operating system:\n");
379 /* main_loop() can return to retry autoboot, if so just run it again. */
386 #ifdef CONFIG_STATUS_LED
387 status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
388 status_led_set(STATUS_LED_CRASH, STATUS_LED_BLINKING);
390 puts("### ERROR ### Please RESET the board ###\n");
392 /* If a JTAG emulator is hooked up, we'll automatically trigger
393 * a breakpoint in it. If one isn't, this is just a NOP.