]>
git.ipfire.org Git - people/ms/u-boot.git/blob - arch/blackfin/lib/board.c
47d487fae55daa04563ad16b4ae52fd9c844ce80
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 <timestamp.h>
20 #include <status_led.h>
24 #include <asm/mach-common/bits/mpu.h>
27 #ifdef CONFIG_CMD_NAND
28 #include <nand.h> /* cannot even include nand.h if it isnt configured */
31 #ifdef CONFIG_BITBANGMII
35 #if defined(CONFIG_POST)
40 DECLARE_GLOBAL_DATA_PTR
;
42 const char version_string
[] = U_BOOT_VERSION
" ("U_BOOT_DATE
" - "U_BOOT_TIME
")";
44 __attribute__((always_inline
))
45 static inline void serial_early_puts(const char *s
)
47 #ifdef CONFIG_DEBUG_EARLY_SERIAL
48 serial_puts("Early: ");
53 static int display_banner(void)
55 printf("\n\n%s\n\n", version_string
);
56 printf("CPU: ADSP %s "
57 "(Detected Rev: 0.%d) "
61 get_bfin_boot_mode(CONFIG_BFIN_BOOT_MODE
));
65 static int init_baudrate(void)
68 int i
= getenv_f("baudrate", baudrate
, sizeof(baudrate
));
69 gd
->bd
->bi_baudrate
= gd
->baudrate
= (i
> 0)
70 ? simple_strtoul(baudrate
, NULL
, 10)
75 static void display_global_data(void)
79 #ifndef CONFIG_DEBUG_EARLY_SERIAL
84 printf(" gd: %p\n", gd
);
85 printf(" |-flags: %lx\n", gd
->flags
);
86 printf(" |-board_type: %lx\n", gd
->board_type
);
87 printf(" |-baudrate: %lu\n", gd
->baudrate
);
88 printf(" |-have_console: %lx\n", gd
->have_console
);
89 printf(" |-ram_size: %lx\n", gd
->ram_size
);
90 printf(" |-env_addr: %lx\n", gd
->env_addr
);
91 printf(" |-env_valid: %lx\n", gd
->env_valid
);
92 printf(" |-jt(%p): %p\n", gd
->jt
, *(gd
->jt
));
93 printf(" \\-bd: %p\n", gd
->bd
);
94 printf(" |-bi_baudrate: %x\n", bd
->bi_baudrate
);
95 printf(" |-bi_ip_addr: %lx\n", bd
->bi_ip_addr
);
96 printf(" |-bi_boot_params: %lx\n", bd
->bi_boot_params
);
97 printf(" |-bi_memstart: %lx\n", bd
->bi_memstart
);
98 printf(" |-bi_memsize: %lx\n", bd
->bi_memsize
);
99 printf(" |-bi_flashstart: %lx\n", bd
->bi_flashstart
);
100 printf(" |-bi_flashsize: %lx\n", bd
->bi_flashsize
);
101 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 if (CONFIG_MEM_SIZE
) {
139 uint32_t mbase
= CONFIG_SYS_MONITOR_BASE
;
140 uint32_t mend
= mbase
+ CONFIG_SYS_MONITOR_LEN
;
141 mbase
&= CPLB_PAGE_MASK
;
142 mend
&= CPLB_PAGE_MASK
;
144 icplb_add(mbase
, SDRAM_IKERNEL
);
145 dcplb_add(mbase
, SDRAM_DKERNEL
);
149 * If the monitor crosses a 4 meg boundary, we'll need
150 * to lock two entries for it. We assume it doesn't
151 * cross two 4 meg boundaries ...
154 icplb_add(mend
, SDRAM_IKERNEL
);
155 dcplb_add(mend
, SDRAM_DKERNEL
);
160 icplb_add(0x20000000, SDRAM_INON_CHBL
);
161 dcplb_add(0x20000000, SDRAM_EBIU
);
164 /* Add entries for the rest of external RAM up to the bootrom */
167 #ifdef CONFIG_DEBUG_NULL_PTR
168 icplb_add(extern_memory
, (SDRAM_IKERNEL
& ~PAGE_SIZE_MASK
) | PAGE_SIZE_1KB
);
169 dcplb_add(extern_memory
, (SDRAM_DKERNEL
& ~PAGE_SIZE_MASK
) | PAGE_SIZE_1KB
);
171 icplb_add(extern_memory
, SDRAM_IKERNEL
);
172 dcplb_add(extern_memory
, SDRAM_DKERNEL
);
173 extern_memory
+= CPLB_PAGE_SIZE
;
177 while (i
< 16 && extern_memory
< (CONFIG_SYS_MONITOR_BASE
& CPLB_PAGE_MASK
)) {
178 icplb_add(extern_memory
, SDRAM_IGENERIC
);
179 dcplb_add(extern_memory
, SDRAM_DGENERIC
);
180 extern_memory
+= CPLB_PAGE_SIZE
;
191 * All attempts to come up with a "common" initialization sequence
192 * that works for all boards and architectures failed: some of the
193 * requirements are just _too_ different. To get rid of the resulting
194 * mess of board dependend #ifdef'ed code we now make the whole
195 * initialization sequence configurable to the user.
197 * The requirements for any new initalization function is simple: it
198 * receives a pointer to the "global data" structure as it's only
199 * argument, and returns an integer return code, where 0 means
200 * "continue" and != 0 means "fatal error, hang the system".
203 extern int watchdog_init(void);
204 extern int exception_init(void);
205 extern int irq_init(void);
206 extern int timer_init(void);
208 void board_init_f(ulong bootflag
)
213 #ifdef CONFIG_BOARD_EARLY_INIT_F
214 serial_early_puts("Board early init flash\n");
215 board_early_init_f();
218 serial_early_puts("Init CPLB tables\n");
221 serial_early_puts("Exceptions setup\n");
224 #ifndef CONFIG_ICACHE_OFF
225 serial_early_puts("Turn on ICACHE\n");
228 #ifndef CONFIG_DCACHE_OFF
229 serial_early_puts("Turn on DCACHE\n");
233 #ifdef CONFIG_WATCHDOG
234 serial_early_puts("Setting up external watchdog\n");
239 if (GENERATED_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, GENERATED_GBL_DATA_SIZE
);
246 bd
= (bd_t
*) (CONFIG_SYS_BD_INFO_ADDR
);
248 memset((void *)bd
, 0, GENERATED_BD_INFO_SIZE
);
250 bd
->bi_r_version
= version_string
;
251 bd
->bi_cpu
= MK_STR(CONFIG_BFIN_CPU
);
252 bd
->bi_board_name
= BFIN_BOARD_NAME
;
253 bd
->bi_vco
= get_vco();
254 bd
->bi_cclk
= get_cclk();
255 bd
->bi_sclk
= get_sclk();
256 bd
->bi_memstart
= CONFIG_SYS_SDRAM_BASE
;
257 bd
->bi_memsize
= CONFIG_SYS_MAX_RAM_SIZE
;
260 serial_early_puts("IRQ init\n");
262 serial_early_puts("Environment init\n");
264 serial_early_puts("Baudrate init\n");
266 serial_early_puts("Serial init\n");
268 serial_early_puts("Console init flash\n");
270 serial_early_puts("End of early debugging\n");
276 printf("Clock: VCO: %s MHz, ", strmhz(buf
, get_vco()));
277 printf("Core: %s MHz, ", strmhz(buf
, get_cclk()));
278 printf("System: %s MHz\n", strmhz(buf
, get_sclk()));
280 if (CONFIG_MEM_SIZE
) {
282 print_size(bd
->bi_memsize
, "\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 static void board_net_init_r(bd_t
*bd
)
296 #ifdef CONFIG_BITBANGMII
299 #ifdef CONFIG_CMD_NET
302 if ((s
= getenv("bootfile")) != NULL
)
303 copy_filename(BootFile
, s
, sizeof(BootFile
));
305 bd
->bi_ip_addr
= getenv_IPaddr("ipaddr");
308 eth_initialize(gd
->bd
);
312 void board_init_r(gd_t
* id
, ulong dest_addr
)
317 gd
->flags
|= GD_FLG_RELOC
; /* tell others: relocation done */
320 #if defined(CONFIG_POST)
321 post_output_backlog();
324 /* initialize malloc() area */
325 mem_malloc_init(CONFIG_SYS_MALLOC_BASE
, CONFIG_SYS_MALLOC_LEN
);
327 #if !defined(CONFIG_SYS_NO_FLASH)
328 /* Initialize the flash and protect u-boot by default */
329 extern flash_info_t flash_info
[];
331 ulong size
= flash_init();
332 print_size(size
, "\n");
333 flash_protect(FLAG_PROTECT_SET
, CONFIG_SYS_FLASH_BASE
,
334 CONFIG_SYS_FLASH_BASE
+ CONFIG_SYS_MONITOR_LEN
- 1,
336 bd
->bi_flashstart
= CONFIG_SYS_FLASH_BASE
;
337 bd
->bi_flashsize
= size
;
338 bd
->bi_flashoffset
= 0;
340 bd
->bi_flashstart
= 0;
341 bd
->bi_flashsize
= 0;
342 bd
->bi_flashoffset
= 0;
345 #ifdef CONFIG_CMD_NAND
347 nand_init(); /* go init the NAND */
350 #ifdef CONFIG_GENERIC_MMC
355 /* relocate environment function pointers etc. */
358 /* Initialize stdio devices */
362 /* Initialize the console (after the relocation and devices init) */
365 #ifdef CONFIG_CMD_KGDB
370 #ifdef CONFIG_STATUS_LED
371 status_led_set(STATUS_LED_BOOT
, STATUS_LED_BLINKING
);
372 status_led_set(STATUS_LED_CRASH
, STATUS_LED_OFF
);
375 /* Initialize from environment */
376 if ((s
= getenv("loadaddr")) != NULL
)
377 load_addr
= simple_strtoul(s
, NULL
, 16);
379 #if defined(CONFIG_MISC_INIT_R)
380 /* miscellaneous platform dependent initialisations */
384 board_net_init_r(bd
);
386 display_global_data();
388 #if defined(CONFIG_POST)
390 post_run(NULL
, POST_RAM
| post_bootmode_get(0));
393 if (bfin_os_log_check()) {
394 puts("\nLog buffer from operating system:\n");
399 /* main_loop() can return to retry autoboot, if so just run it again. */
406 #ifdef CONFIG_STATUS_LED
407 status_led_set(STATUS_LED_BOOT
, STATUS_LED_OFF
);
408 status_led_set(STATUS_LED_CRASH
, STATUS_LED_BLINKING
);
410 puts("### ERROR ### Please RESET the board ###\n");
412 /* If a JTAG emulator is hooked up, we'll automatically trigger
413 * a breakpoint in it. If one isn't, this is just a NOP.