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git.ipfire.org Git - people/ms/u-boot.git/blob - arch/blackfin/lib/board.c
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>
19 #include <status_led.h>
23 #include <asm/mach-common/bits/mpu.h>
26 #ifdef CONFIG_CMD_NAND
27 #include <nand.h> /* cannot even include nand.h if it isnt configured */
30 #ifdef CONFIG_BITBANGMII
34 #if defined(CONFIG_POST)
39 DECLARE_GLOBAL_DATA_PTR
;
41 __attribute__((always_inline
))
42 static inline void serial_early_puts(const char *s
)
44 #ifdef CONFIG_DEBUG_EARLY_SERIAL
45 serial_puts("Early: ");
50 static int display_banner(void)
52 printf("\n\n%s\n\n", version_string
);
53 printf("CPU: ADSP %s "
54 "(Detected Rev: 0.%d) "
58 get_bfin_boot_mode(CONFIG_BFIN_BOOT_MODE
));
62 static int init_baudrate(void)
65 int i
= getenv_f("baudrate", baudrate
, sizeof(baudrate
));
66 gd
->bd
->bi_baudrate
= gd
->baudrate
= (i
> 0)
67 ? simple_strtoul(baudrate
, NULL
, 10)
72 static void display_global_data(void)
76 #ifndef CONFIG_DEBUG_EARLY_SERIAL
81 printf(" gd: %p\n", gd
);
82 printf(" |-flags: %lx\n", gd
->flags
);
83 printf(" |-board_type: %lx\n", gd
->board_type
);
84 printf(" |-baudrate: %lu\n", gd
->baudrate
);
85 printf(" |-have_console: %lx\n", gd
->have_console
);
86 printf(" |-ram_size: %lx\n", gd
->ram_size
);
87 printf(" |-env_addr: %lx\n", gd
->env_addr
);
88 printf(" |-env_valid: %lx\n", gd
->env_valid
);
89 printf(" |-jt(%p): %p\n", gd
->jt
, *(gd
->jt
));
90 printf(" \\-bd: %p\n", gd
->bd
);
91 printf(" |-bi_baudrate: %x\n", bd
->bi_baudrate
);
92 printf(" |-bi_ip_addr: %lx\n", bd
->bi_ip_addr
);
93 printf(" |-bi_boot_params: %lx\n", bd
->bi_boot_params
);
94 printf(" |-bi_memstart: %lx\n", bd
->bi_memstart
);
95 printf(" |-bi_memsize: %lx\n", bd
->bi_memsize
);
96 printf(" |-bi_flashstart: %lx\n", bd
->bi_flashstart
);
97 printf(" |-bi_flashsize: %lx\n", bd
->bi_flashsize
);
98 printf(" \\-bi_flashoffset: %lx\n", bd
->bi_flashoffset
);
101 #define CPLB_PAGE_SIZE (4 * 1024 * 1024)
102 #define CPLB_PAGE_MASK (~(CPLB_PAGE_SIZE - 1))
103 void init_cplbtables(void)
105 volatile uint32_t *ICPLB_ADDR
, *ICPLB_DATA
;
106 volatile uint32_t *DCPLB_ADDR
, *DCPLB_DATA
;
107 uint32_t extern_memory
;
110 void icplb_add(uint32_t addr
, uint32_t data
)
112 *(ICPLB_ADDR
+ i
) = addr
;
113 *(ICPLB_DATA
+ i
) = data
;
115 void dcplb_add(uint32_t addr
, uint32_t data
)
117 *(DCPLB_ADDR
+ i
) = addr
;
118 *(DCPLB_DATA
+ i
) = data
;
121 /* populate a few common entries ... we'll let
122 * the memory map and cplb exception handler do
123 * the rest of the work.
126 ICPLB_ADDR
= (uint32_t *)ICPLB_ADDR0
;
127 ICPLB_DATA
= (uint32_t *)ICPLB_DATA0
;
128 DCPLB_ADDR
= (uint32_t *)DCPLB_ADDR0
;
129 DCPLB_DATA
= (uint32_t *)DCPLB_DATA0
;
131 icplb_add(0xFFA00000, L1_IMEMORY
);
132 dcplb_add(0xFF800000, L1_DMEMORY
);
135 if (CONFIG_MEM_SIZE
) {
136 uint32_t mbase
= CONFIG_SYS_MONITOR_BASE
;
137 uint32_t mend
= mbase
+ CONFIG_SYS_MONITOR_LEN
;
138 mbase
&= CPLB_PAGE_MASK
;
139 mend
&= CPLB_PAGE_MASK
;
141 icplb_add(mbase
, SDRAM_IKERNEL
);
142 dcplb_add(mbase
, SDRAM_DKERNEL
);
146 * If the monitor crosses a 4 meg boundary, we'll need
147 * to lock two entries for it. We assume it doesn't
148 * cross two 4 meg boundaries ...
151 icplb_add(mend
, SDRAM_IKERNEL
);
152 dcplb_add(mend
, SDRAM_DKERNEL
);
157 icplb_add(0x20000000, SDRAM_INON_CHBL
);
158 dcplb_add(0x20000000, SDRAM_EBIU
);
161 /* Add entries for the rest of external RAM up to the bootrom */
164 #ifdef CONFIG_DEBUG_NULL_PTR
165 icplb_add(extern_memory
, (SDRAM_IKERNEL
& ~PAGE_SIZE_MASK
) | PAGE_SIZE_1KB
);
166 dcplb_add(extern_memory
, (SDRAM_DKERNEL
& ~PAGE_SIZE_MASK
) | PAGE_SIZE_1KB
);
168 icplb_add(extern_memory
, SDRAM_IKERNEL
);
169 dcplb_add(extern_memory
, SDRAM_DKERNEL
);
170 extern_memory
+= CPLB_PAGE_SIZE
;
174 while (i
< 16 && extern_memory
< (CONFIG_SYS_MONITOR_BASE
& CPLB_PAGE_MASK
)) {
175 icplb_add(extern_memory
, SDRAM_IGENERIC
);
176 dcplb_add(extern_memory
, SDRAM_DGENERIC
);
177 extern_memory
+= CPLB_PAGE_SIZE
;
188 * All attempts to come up with a "common" initialization sequence
189 * that works for all boards and architectures failed: some of the
190 * requirements are just _too_ different. To get rid of the resulting
191 * mess of board dependend #ifdef'ed code we now make the whole
192 * initialization sequence configurable to the user.
194 * The requirements for any new initalization function is simple: it
195 * receives a pointer to the "global data" structure as it's only
196 * argument, and returns an integer return code, where 0 means
197 * "continue" and != 0 means "fatal error, hang the system".
200 extern int watchdog_init(void);
201 extern int exception_init(void);
202 extern int irq_init(void);
203 extern int timer_init(void);
205 void board_init_f(ulong bootflag
)
210 #ifdef CONFIG_BOARD_EARLY_INIT_F
211 serial_early_puts("Board early init flash\n");
212 board_early_init_f();
215 serial_early_puts("Init CPLB tables\n");
218 serial_early_puts("Exceptions setup\n");
221 #ifndef CONFIG_ICACHE_OFF
222 serial_early_puts("Turn on ICACHE\n");
225 #ifndef CONFIG_DCACHE_OFF
226 serial_early_puts("Turn on DCACHE\n");
230 #ifdef CONFIG_WATCHDOG
231 serial_early_puts("Setting up external watchdog\n");
236 if (GENERATED_GBL_DATA_SIZE
< sizeof(*gd
))
239 serial_early_puts("Init global data\n");
240 gd
= (gd_t
*) (CONFIG_SYS_GBL_DATA_ADDR
);
241 memset((void *)gd
, 0, GENERATED_GBL_DATA_SIZE
);
243 bd
= (bd_t
*) (CONFIG_SYS_BD_INFO_ADDR
);
245 memset((void *)bd
, 0, GENERATED_BD_INFO_SIZE
);
247 bd
->bi_r_version
= version_string
;
248 bd
->bi_cpu
= MK_STR(CONFIG_BFIN_CPU
);
249 bd
->bi_board_name
= BFIN_BOARD_NAME
;
250 bd
->bi_vco
= get_vco();
251 bd
->bi_cclk
= get_cclk();
252 bd
->bi_sclk
= get_sclk();
253 bd
->bi_memstart
= CONFIG_SYS_SDRAM_BASE
;
254 bd
->bi_memsize
= CONFIG_SYS_MAX_RAM_SIZE
;
257 serial_early_puts("IRQ init\n");
259 serial_early_puts("Environment init\n");
261 serial_early_puts("Baudrate init\n");
263 serial_early_puts("Serial init\n");
265 serial_early_puts("Console init flash\n");
267 serial_early_puts("End of early debugging\n");
273 printf("Clock: VCO: %s MHz, ", strmhz(buf
, get_vco()));
274 printf("Core: %s MHz, ", strmhz(buf
, get_cclk()));
275 printf("System: %s MHz\n", strmhz(buf
, get_sclk()));
277 if (CONFIG_MEM_SIZE
) {
279 print_size(bd
->bi_memsize
, "\n");
282 #if defined(CONFIG_POST)
284 post_bootmode_init();
285 post_run(NULL
, POST_ROM
| post_bootmode_get(0));
288 board_init_r((gd_t
*) gd
, 0x20000010);
291 static void board_net_init_r(bd_t
*bd
)
293 #ifdef CONFIG_BITBANGMII
296 #ifdef CONFIG_CMD_NET
299 if ((s
= getenv("bootfile")) != NULL
)
300 copy_filename(BootFile
, s
, sizeof(BootFile
));
302 bd
->bi_ip_addr
= getenv_IPaddr("ipaddr");
305 eth_initialize(gd
->bd
);
309 void board_init_r(gd_t
* id
, ulong dest_addr
)
314 gd
->flags
|= GD_FLG_RELOC
; /* tell others: relocation done */
317 #if defined(CONFIG_POST)
318 post_output_backlog();
321 /* initialize malloc() area */
322 mem_malloc_init(CONFIG_SYS_MALLOC_BASE
, CONFIG_SYS_MALLOC_LEN
);
324 #if !defined(CONFIG_SYS_NO_FLASH)
325 /* Initialize the flash and protect u-boot by default */
326 extern flash_info_t flash_info
[];
328 ulong size
= flash_init();
329 print_size(size
, "\n");
330 flash_protect(FLAG_PROTECT_SET
, CONFIG_SYS_FLASH_BASE
,
331 CONFIG_SYS_FLASH_BASE
+ CONFIG_SYS_MONITOR_LEN
- 1,
333 bd
->bi_flashstart
= CONFIG_SYS_FLASH_BASE
;
334 bd
->bi_flashsize
= size
;
335 bd
->bi_flashoffset
= 0;
337 bd
->bi_flashstart
= 0;
338 bd
->bi_flashsize
= 0;
339 bd
->bi_flashoffset
= 0;
342 #ifdef CONFIG_CMD_NAND
344 nand_init(); /* go init the NAND */
347 #ifdef CONFIG_GENERIC_MMC
352 /* relocate environment function pointers etc. */
355 /* Initialize stdio devices */
359 /* Initialize the console (after the relocation and devices init) */
362 #ifdef CONFIG_CMD_KGDB
367 #ifdef CONFIG_STATUS_LED
368 status_led_set(STATUS_LED_BOOT
, STATUS_LED_BLINKING
);
369 status_led_set(STATUS_LED_CRASH
, STATUS_LED_OFF
);
372 /* Initialize from environment */
373 if ((s
= getenv("loadaddr")) != NULL
)
374 load_addr
= simple_strtoul(s
, NULL
, 16);
376 #if defined(CONFIG_MISC_INIT_R)
377 /* miscellaneous platform dependent initialisations */
381 board_net_init_r(bd
);
383 display_global_data();
385 #if defined(CONFIG_POST)
387 post_run(NULL
, POST_RAM
| post_bootmode_get(0));
390 if (CONFIG_MEM_SIZE
&& bfin_os_log_check()) {
391 puts("\nLog buffer from operating system:\n");
396 /* main_loop() can return to retry autoboot, if so just run it again. */
403 #ifdef CONFIG_STATUS_LED
404 status_led_set(STATUS_LED_BOOT
, STATUS_LED_OFF
);
405 status_led_set(STATUS_LED_CRASH
, STATUS_LED_BLINKING
);
407 puts("### ERROR ### Please RESET the board ###\n");
409 /* If a JTAG emulator is hooked up, we'll automatically trigger
410 * a breakpoint in it. If one isn't, this is just a NOP.