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git.ipfire.org Git - people/ms/u-boot.git/blob - lib_blackfin/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.
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
) " "
74 "(Detected Rev: 0.%d) "
77 get_bfin_boot_mode(CONFIG_BFIN_BOOT_MODE
));
81 static int init_baudrate(void)
84 int i
= getenv_r("baudrate", baudrate
, sizeof(baudrate
));
85 gd
->bd
->bi_baudrate
= gd
->baudrate
= (i
> 0)
86 ? simple_strtoul(baudrate
, NULL
, 10)
91 static void display_global_data(void)
93 #ifdef CONFIG_DEBUG_EARLY_SERIAL
96 printf(" gd: %x\n", gd
);
97 printf(" |-flags: %x\n", gd
->flags
);
98 printf(" |-board_type: %x\n", gd
->board_type
);
99 printf(" |-baudrate: %i\n", gd
->baudrate
);
100 printf(" |-have_console: %x\n", gd
->have_console
);
101 printf(" |-ram_size: %x\n", gd
->ram_size
);
102 printf(" |-reloc_off: %x\n", gd
->reloc_off
);
103 printf(" |-env_addr: %x\n", gd
->env_addr
);
104 printf(" |-env_valid: %x\n", gd
->env_valid
);
105 printf(" |-jt(%x): %x\n", gd
->jt
, *(gd
->jt
));
106 printf(" \\-bd: %x\n", gd
->bd
);
107 printf(" |-bi_baudrate: %x\n", bd
->bi_baudrate
);
108 printf(" |-bi_ip_addr: %x\n", bd
->bi_ip_addr
);
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 static void board_net_init_r(bd_t
*bd
)
296 #ifdef CONFIG_CMD_NET
300 if ((s
= getenv("bootfile")) != NULL
)
301 copy_filename(BootFile
, s
, sizeof(BootFile
));
303 bd
->bi_ip_addr
= getenv_IPaddr("ipaddr");
306 eth_initialize(gd
->bd
);
308 eth_getenv_enetaddr("ethaddr", enetaddr
);
309 printf("MAC: %pM\n", enetaddr
);
313 void board_init_r(gd_t
* id
, ulong dest_addr
)
315 extern void malloc_bin_reloc(void);
319 gd
->flags
|= GD_FLG_RELOC
; /* tell others: relocation done */
322 #if defined(CONFIG_POST)
323 post_output_backlog();
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;
344 /* initialize malloc() area */
348 #ifdef CONFIG_CMD_NAND
350 nand_init(); /* go init the NAND */
353 /* relocate environment function pointers etc. */
356 /* Initialize devices */
360 /* Initialize the console (after the relocation and devices init) */
363 #ifdef CONFIG_STATUS_LED
364 status_led_set(STATUS_LED_BOOT
, STATUS_LED_BLINKING
);
365 status_led_set(STATUS_LED_CRASH
, STATUS_LED_OFF
);
368 /* Initialize from environment */
369 if ((s
= getenv("loadaddr")) != NULL
)
370 load_addr
= simple_strtoul(s
, NULL
, 16);
372 #if defined(CONFIG_MISC_INIT_R)
373 /* miscellaneous platform dependent initialisations */
377 board_net_init_r(bd
);
379 display_global_data();
381 #if defined(CONFIG_POST)
383 post_run(NULL
, POST_RAM
| post_bootmode_get(0));
386 /* main_loop() can return to retry autoboot, if so just run it again. */
393 #ifdef CONFIG_STATUS_LED
394 status_led_set(STATUS_LED_BOOT
, STATUS_LED_OFF
);
395 status_led_set(STATUS_LED_CRASH
, STATUS_LED_BLINKING
);
397 puts("### ERROR ### Please RESET the board ###\n");
399 /* If a JTAG emulator is hooked up, we'll automatically trigger
400 * a breakpoint in it. If one isn't, this is just a NOP.