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 #ifdef CONFIG_BITBANGMII
40 DECLARE_GLOBAL_DATA_PTR;
42 #if ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
43 (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
44 defined(CONFIG_ENV_IS_IN_NVRAM)
45 #define TOTAL_MALLOC_LEN (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
47 #define TOTAL_MALLOC_LEN CONFIG_SYS_MALLOC_LEN
52 extern int timer_init(void);
54 extern int incaip_set_cpuclk(void);
56 extern ulong uboot_end_data;
57 extern ulong uboot_end;
59 ulong monitor_flash_len;
61 const char version_string[] =
62 U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";
64 static char *failed = "*** failed ***\n";
67 * mips_io_port_base is the begin of the address space to which x86 style
68 * I/O ports are mapped.
70 unsigned long mips_io_port_base = -1;
72 int __board_early_init_f(void)
75 * Nothing to do in this dummy implementation
79 int board_early_init_f(void) __attribute__((weak, alias("__board_early_init_f")));
82 static int init_func_ram (void)
84 #ifdef CONFIG_BOARD_TYPES
85 int board_type = gd->board_type;
87 int board_type = 0; /* use dummy arg */
91 if ((gd->ram_size = initdram (board_type)) > 0) {
92 print_size (gd->ram_size, "\n");
99 static int display_banner(void)
102 printf ("\n\n%s\n\n", version_string);
106 #ifndef CONFIG_SYS_NO_FLASH
107 static void display_flash_config(ulong size)
110 print_size (size, "\n");
114 static int init_baudrate (void)
116 char tmp[64]; /* long enough for environment variables */
117 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
119 gd->baudrate = (i > 0)
120 ? (int) simple_strtoul (tmp, NULL, 10)
128 * Breath some life into the board...
130 * The first part of initialization is running from Flash memory;
131 * its main purpose is to initialize the RAM so that we
132 * can relocate the monitor code to RAM.
136 * All attempts to come up with a "common" initialization sequence
137 * that works for all boards and architectures failed: some of the
138 * requirements are just _too_ different. To get rid of the resulting
139 * mess of board dependend #ifdef'ed code we now make the whole
140 * initialization sequence configurable to the user.
142 * The requirements for any new initalization function is simple: it
143 * receives a pointer to the "global data" structure as it's only
144 * argument, and returns an integer return code, where 0 means
145 * "continue" and != 0 means "fatal error, hang the system".
147 typedef int (init_fnc_t) (void);
149 init_fnc_t *init_sequence[] = {
152 env_init, /* initialize environment */
153 #ifdef CONFIG_INCA_IP
154 incaip_set_cpuclk, /* set cpu clock according to environment variable */
156 init_baudrate, /* initialze baudrate settings */
157 serial_init, /* serial communications setup */
159 display_banner, /* say that we are here */
166 void board_init_f(ulong bootflag)
170 init_fnc_t **init_fnc_ptr;
171 ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
174 void copy_code (ulong);
177 /* Pointer is writable since we allocated a register for it.
180 /* compiler optimization barrier needed for GCC >= 3.4 */
181 __asm__ __volatile__("": : :"memory");
183 memset ((void *)gd, 0, sizeof (gd_t));
185 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
186 if ((*init_fnc_ptr)() != 0) {
192 * Now that we have DRAM mapped and working, we can
193 * relocate the code and continue running from DRAM.
195 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
197 /* We can reserve some RAM "on top" here.
200 /* round down to next 4 kB limit.
203 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
205 /* Reserve memory for U-Boot code, data & bss
206 * round down to next 16 kB limit
209 addr &= ~(16 * 1024 - 1);
211 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
213 /* Reserve memory for malloc() arena.
215 addr_sp = addr - TOTAL_MALLOC_LEN;
216 debug ("Reserving %dk for malloc() at: %08lx\n",
217 TOTAL_MALLOC_LEN >> 10, addr_sp);
220 * (permanently) allocate a Board Info struct
221 * and a permanent copy of the "global" data
223 addr_sp -= sizeof(bd_t);
224 bd = (bd_t *)addr_sp;
226 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
227 sizeof(bd_t), addr_sp);
229 addr_sp -= sizeof(gd_t);
230 id = (gd_t *)addr_sp;
231 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
232 sizeof (gd_t), addr_sp);
234 /* Reserve memory for boot params.
236 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
237 bd->bi_boot_params = addr_sp;
238 debug ("Reserving %dk for boot params() at: %08lx\n",
239 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
242 * Finally, we set up a new (bigger) stack.
244 * Leave some safety gap for SP, force alignment on 16 byte boundary
245 * Clear initial stack frame
249 s = (ulong *)addr_sp;
253 debug ("Stack Pointer at: %08lx\n", addr_sp);
256 * Save local variables to board info struct
258 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
259 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
260 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
262 memcpy (id, (void *)gd, sizeof (gd_t));
264 /* On the purple board we copy the code in a special way
265 * in order to solve flash problems
271 relocate_code (addr_sp, id, addr);
273 /* NOTREACHED - relocate_code() does not return */
275 /************************************************************************
277 * This is the next part if the initialization sequence: we are now
278 * running from RAM and have a "normal" C environment, i. e. global
279 * data can be written, BSS has been cleared, the stack size in not
280 * that critical any more, etc.
282 ************************************************************************
285 void board_init_r (gd_t *id, ulong dest_addr)
288 #ifndef CONFIG_SYS_NO_FLASH
291 extern void malloc_bin_reloc (void);
292 #ifndef CONFIG_ENV_IS_NOWHERE
293 extern char * env_name_spec;
299 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
301 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
303 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
305 monitor_flash_len = (ulong)&uboot_end_data - dest_addr;
308 * We have to relocate the command table manually
310 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
313 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
315 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
316 cmdtp->name, (ulong) (cmdtp->cmd), addr);
319 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
321 addr = (ulong)(cmdtp->name) + gd->reloc_off;
322 cmdtp->name = (char *)addr;
325 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
326 cmdtp->usage = (char *)addr;
328 #ifdef CONFIG_SYS_LONGHELP
330 addr = (ulong)(cmdtp->help) + gd->reloc_off;
331 cmdtp->help = (char *)addr;
335 /* there are some other pointer constants we must deal with */
336 #ifndef CONFIG_ENV_IS_NOWHERE
337 env_name_spec += gd->reloc_off;
342 /* The Malloc area is immediately below the monitor copy in DRAM */
343 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
344 TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
347 #ifndef CONFIG_SYS_NO_FLASH
348 /* configure available FLASH banks */
350 display_flash_config (size);
351 bd->bi_flashsize = size;
354 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
355 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
356 bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
358 bd->bi_flashoffset = 0;
361 #ifdef CONFIG_CMD_NAND
363 nand_init (); /* go init the NAND */
366 #if defined(CONFIG_CMD_ONENAND)
370 /* relocate environment function pointers etc. */
374 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
376 #if defined(CONFIG_PCI)
378 * Do pci configuration
383 /** leave this here (after malloc(), environment and PCI are working) **/
384 /* Initialize stdio devices */
389 /* Initialize the console (after the relocation and devices init) */
391 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
393 /* Initialize from environment */
394 if ((s = getenv ("loadaddr")) != NULL) {
395 load_addr = simple_strtoul (s, NULL, 16);
397 #if defined(CONFIG_CMD_NET)
398 if ((s = getenv ("bootfile")) != NULL) {
399 copy_filename (BootFile, s, sizeof (BootFile));
403 #ifdef CONFIG_CMD_SPI
405 spi_init (); /* go init the SPI */
409 #if defined(CONFIG_MISC_INIT_R)
410 /* miscellaneous platform dependent initialisations */
414 #ifdef CONFIG_BITBANGMII
417 #if defined(CONFIG_CMD_NET)
418 #if defined(CONFIG_NET_MULTI)
421 eth_initialize(gd->bd);
424 /* main_loop() can return to retry autoboot, if so just run it again. */
429 /* NOTREACHED - no way out of command loop except booting */
434 puts ("### ERROR ### Please RESET the board ###\n");