3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <stdio_dev.h>
28 #include <timestamp.h>
31 #include <environment.h>
33 #include <onenand_uboot.h>
36 DECLARE_GLOBAL_DATA_PTR
;
38 #if ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
39 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
40 defined(CONFIG_ENV_IS_IN_NVRAM)
41 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
43 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
48 extern int timer_init(void);
50 extern int incaip_set_cpuclk(void);
52 extern ulong uboot_end_data
;
53 extern ulong uboot_end
;
55 ulong monitor_flash_len
;
57 const char version_string
[] =
58 U_BOOT_VERSION
" (" U_BOOT_DATE
" - " U_BOOT_TIME
")";
60 static char *failed
= "*** failed ***\n";
63 * Begin and End of memory area for malloc(), and current "brk"
65 static ulong mem_malloc_start
;
66 static ulong mem_malloc_end
;
67 static ulong mem_malloc_brk
;
70 * mips_io_port_base is the begin of the address space to which x86 style
71 * I/O ports are mapped.
73 unsigned long mips_io_port_base
= -1;
75 int __board_early_init_f(void)
78 * Nothing to do in this dummy implementation
82 int board_early_init_f(void) __attribute__((weak
, alias("__board_early_init_f")));
85 * The Malloc area is immediately below the monitor copy in DRAM
87 static void mem_malloc_init (void)
89 ulong dest_addr
= CONFIG_SYS_MONITOR_BASE
+ gd
->reloc_off
;
91 mem_malloc_end
= dest_addr
;
92 mem_malloc_start
= dest_addr
- TOTAL_MALLOC_LEN
;
93 mem_malloc_brk
= mem_malloc_start
;
95 memset ((void *) mem_malloc_start
,
97 mem_malloc_end
- mem_malloc_start
);
100 void *sbrk (ptrdiff_t increment
)
102 ulong old
= mem_malloc_brk
;
103 ulong
new = old
+ increment
;
105 if ((new < mem_malloc_start
) || (new > mem_malloc_end
)) {
108 mem_malloc_brk
= new;
109 return ((void *) old
);
113 static int init_func_ram (void)
115 #ifdef CONFIG_BOARD_TYPES
116 int board_type
= gd
->board_type
;
118 int board_type
= 0; /* use dummy arg */
122 if ((gd
->ram_size
= initdram (board_type
)) > 0) {
123 print_size (gd
->ram_size
, "\n");
130 static int display_banner(void)
133 printf ("\n\n%s\n\n", version_string
);
137 #ifndef CONFIG_SYS_NO_FLASH
138 static void display_flash_config(ulong size
)
141 print_size (size
, "\n");
145 static int init_baudrate (void)
147 char tmp
[64]; /* long enough for environment variables */
148 int i
= getenv_r ("baudrate", tmp
, sizeof (tmp
));
150 gd
->baudrate
= (i
> 0)
151 ? (int) simple_strtoul (tmp
, NULL
, 10)
159 * Breath some life into the board...
161 * The first part of initialization is running from Flash memory;
162 * its main purpose is to initialize the RAM so that we
163 * can relocate the monitor code to RAM.
167 * All attempts to come up with a "common" initialization sequence
168 * that works for all boards and architectures failed: some of the
169 * requirements are just _too_ different. To get rid of the resulting
170 * mess of board dependend #ifdef'ed code we now make the whole
171 * initialization sequence configurable to the user.
173 * The requirements for any new initalization function is simple: it
174 * receives a pointer to the "global data" structure as it's only
175 * argument, and returns an integer return code, where 0 means
176 * "continue" and != 0 means "fatal error, hang the system".
178 typedef int (init_fnc_t
) (void);
180 init_fnc_t
*init_sequence
[] = {
183 env_init
, /* initialize environment */
184 #ifdef CONFIG_INCA_IP
185 incaip_set_cpuclk
, /* set cpu clock according to environment variable */
187 init_baudrate
, /* initialze baudrate settings */
188 serial_init
, /* serial communications setup */
190 display_banner
, /* say that we are here */
197 void board_init_f(ulong bootflag
)
201 init_fnc_t
**init_fnc_ptr
;
202 ulong addr
, addr_sp
, len
= (ulong
)&uboot_end
- CONFIG_SYS_MONITOR_BASE
;
205 void copy_code (ulong
);
208 /* Pointer is writable since we allocated a register for it.
211 /* compiler optimization barrier needed for GCC >= 3.4 */
212 __asm__
__volatile__("": : :"memory");
214 memset ((void *)gd
, 0, sizeof (gd_t
));
216 for (init_fnc_ptr
= init_sequence
; *init_fnc_ptr
; ++init_fnc_ptr
) {
217 if ((*init_fnc_ptr
)() != 0) {
223 * Now that we have DRAM mapped and working, we can
224 * relocate the code and continue running from DRAM.
226 addr
= CONFIG_SYS_SDRAM_BASE
+ gd
->ram_size
;
228 /* We can reserve some RAM "on top" here.
231 /* round down to next 4 kB limit.
234 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr
);
236 /* Reserve memory for U-Boot code, data & bss
237 * round down to next 16 kB limit
240 addr
&= ~(16 * 1024 - 1);
242 debug ("Reserving %ldk for U-Boot at: %08lx\n", len
>> 10, addr
);
244 /* Reserve memory for malloc() arena.
246 addr_sp
= addr
- TOTAL_MALLOC_LEN
;
247 debug ("Reserving %dk for malloc() at: %08lx\n",
248 TOTAL_MALLOC_LEN
>> 10, addr_sp
);
251 * (permanently) allocate a Board Info struct
252 * and a permanent copy of the "global" data
254 addr_sp
-= sizeof(bd_t
);
255 bd
= (bd_t
*)addr_sp
;
257 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
258 sizeof(bd_t
), addr_sp
);
260 addr_sp
-= sizeof(gd_t
);
261 id
= (gd_t
*)addr_sp
;
262 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
263 sizeof (gd_t
), addr_sp
);
265 /* Reserve memory for boot params.
267 addr_sp
-= CONFIG_SYS_BOOTPARAMS_LEN
;
268 bd
->bi_boot_params
= addr_sp
;
269 debug ("Reserving %dk for boot params() at: %08lx\n",
270 CONFIG_SYS_BOOTPARAMS_LEN
>> 10, addr_sp
);
273 * Finally, we set up a new (bigger) stack.
275 * Leave some safety gap for SP, force alignment on 16 byte boundary
276 * Clear initial stack frame
280 s
= (ulong
*)addr_sp
;
284 debug ("Stack Pointer at: %08lx\n", addr_sp
);
287 * Save local variables to board info struct
289 bd
->bi_memstart
= CONFIG_SYS_SDRAM_BASE
; /* start of DRAM memory */
290 bd
->bi_memsize
= gd
->ram_size
; /* size of DRAM memory in bytes */
291 bd
->bi_baudrate
= gd
->baudrate
; /* Console Baudrate */
293 memcpy (id
, (void *)gd
, sizeof (gd_t
));
295 /* On the purple board we copy the code in a special way
296 * in order to solve flash problems
302 relocate_code (addr_sp
, id
, addr
);
304 /* NOTREACHED - relocate_code() does not return */
306 /************************************************************************
308 * This is the next part if the initialization sequence: we are now
309 * running from RAM and have a "normal" C environment, i. e. global
310 * data can be written, BSS has been cleared, the stack size in not
311 * that critical any more, etc.
313 ************************************************************************
316 void board_init_r (gd_t
*id
, ulong dest_addr
)
319 #ifndef CONFIG_SYS_NO_FLASH
322 extern void malloc_bin_reloc (void);
323 #ifndef CONFIG_ENV_IS_NOWHERE
324 extern char * env_name_spec
;
330 gd
->flags
|= GD_FLG_RELOC
; /* tell others: relocation done */
332 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr
);
334 gd
->reloc_off
= dest_addr
- CONFIG_SYS_MONITOR_BASE
;
336 monitor_flash_len
= (ulong
)&uboot_end_data
- dest_addr
;
339 * We have to relocate the command table manually
341 for (cmdtp
= &__u_boot_cmd_start
; cmdtp
!= &__u_boot_cmd_end
; cmdtp
++) {
344 addr
= (ulong
) (cmdtp
->cmd
) + gd
->reloc_off
;
346 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
347 cmdtp
->name
, (ulong
) (cmdtp
->cmd
), addr
);
350 (int (*)(struct cmd_tbl_s
*, int, int, char *[]))addr
;
352 addr
= (ulong
)(cmdtp
->name
) + gd
->reloc_off
;
353 cmdtp
->name
= (char *)addr
;
356 addr
= (ulong
)(cmdtp
->usage
) + gd
->reloc_off
;
357 cmdtp
->usage
= (char *)addr
;
359 #ifdef CONFIG_SYS_LONGHELP
361 addr
= (ulong
)(cmdtp
->help
) + gd
->reloc_off
;
362 cmdtp
->help
= (char *)addr
;
366 /* there are some other pointer constants we must deal with */
367 #ifndef CONFIG_ENV_IS_NOWHERE
368 env_name_spec
+= gd
->reloc_off
;
373 /* initialize malloc() area */
377 #ifndef CONFIG_SYS_NO_FLASH
378 /* configure available FLASH banks */
380 display_flash_config (size
);
381 bd
->bi_flashsize
= size
;
384 bd
->bi_flashstart
= CONFIG_SYS_FLASH_BASE
;
385 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
386 bd
->bi_flashoffset
= monitor_flash_len
; /* reserved area for U-Boot */
388 bd
->bi_flashoffset
= 0;
391 #ifdef CONFIG_CMD_NAND
393 nand_init (); /* go init the NAND */
396 #if defined(CONFIG_CMD_ONENAND)
400 /* relocate environment function pointers etc. */
404 bd
->bi_ip_addr
= getenv_IPaddr("ipaddr");
406 #if defined(CONFIG_PCI)
408 * Do pci configuration
413 /** leave this here (after malloc(), environment and PCI are working) **/
414 /* Initialize stdio devices */
419 /* Initialize the console (after the relocation and devices init) */
421 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
423 /* Initialize from environment */
424 if ((s
= getenv ("loadaddr")) != NULL
) {
425 load_addr
= simple_strtoul (s
, NULL
, 16);
427 #if defined(CONFIG_CMD_NET)
428 if ((s
= getenv ("bootfile")) != NULL
) {
429 copy_filename (BootFile
, s
, sizeof (BootFile
));
433 #ifdef CONFIG_CMD_SPI
435 spi_init (); /* go init the SPI */
439 #if defined(CONFIG_MISC_INIT_R)
440 /* miscellaneous platform dependent initialisations */
444 #if defined(CONFIG_CMD_NET)
445 #if defined(CONFIG_NET_MULTI)
448 eth_initialize(gd
->bd
);
451 /* main_loop() can return to retry autoboot, if so just run it again. */
456 /* NOTREACHED - no way out of command loop except booting */
461 puts ("### ERROR ### Please RESET the board ###\n");