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;
44 extern int timer_init(void);
46 extern int incaip_set_cpuclk(void);
48 extern ulong uboot_end_data;
49 extern ulong uboot_end;
51 ulong monitor_flash_len;
53 const char version_string[] =
54 U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")";
56 static char *failed = "*** failed ***\n";
59 * mips_io_port_base is the begin of the address space to which x86 style
60 * I/O ports are mapped.
62 unsigned long mips_io_port_base = -1;
64 int __board_early_init_f(void)
67 * Nothing to do in this dummy implementation
71 int board_early_init_f(void) __attribute__((weak, alias("__board_early_init_f")));
74 static int init_func_ram (void)
76 #ifdef CONFIG_BOARD_TYPES
77 int board_type = gd->board_type;
79 int board_type = 0; /* use dummy arg */
83 if ((gd->ram_size = initdram (board_type)) > 0) {
84 print_size (gd->ram_size, "\n");
91 static int display_banner(void)
94 printf ("\n\n%s\n\n", version_string);
98 #ifndef CONFIG_SYS_NO_FLASH
99 static void display_flash_config(ulong size)
102 print_size (size, "\n");
106 static int init_baudrate (void)
108 char tmp[64]; /* long enough for environment variables */
109 int i = getenv_f("baudrate", tmp, sizeof (tmp));
111 gd->baudrate = (i > 0)
112 ? (int) simple_strtoul (tmp, NULL, 10)
120 * Breath some life into the board...
122 * The first part of initialization is running from Flash memory;
123 * its main purpose is to initialize the RAM so that we
124 * can relocate the monitor code to RAM.
128 * All attempts to come up with a "common" initialization sequence
129 * that works for all boards and architectures failed: some of the
130 * requirements are just _too_ different. To get rid of the resulting
131 * mess of board dependend #ifdef'ed code we now make the whole
132 * initialization sequence configurable to the user.
134 * The requirements for any new initalization function is simple: it
135 * receives a pointer to the "global data" structure as it's only
136 * argument, and returns an integer return code, where 0 means
137 * "continue" and != 0 means "fatal error, hang the system".
139 typedef int (init_fnc_t) (void);
141 init_fnc_t *init_sequence[] = {
144 env_init, /* initialize environment */
145 #ifdef CONFIG_INCA_IP
146 incaip_set_cpuclk, /* set cpu clock according to environment variable */
148 init_baudrate, /* initialze baudrate settings */
149 serial_init, /* serial communications setup */
151 display_banner, /* say that we are here */
158 void board_init_f(ulong bootflag)
162 init_fnc_t **init_fnc_ptr;
163 ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
166 void copy_code (ulong);
169 /* Pointer is writable since we allocated a register for it.
172 /* compiler optimization barrier needed for GCC >= 3.4 */
173 __asm__ __volatile__("": : :"memory");
175 memset ((void *)gd, 0, sizeof (gd_t));
177 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
178 if ((*init_fnc_ptr)() != 0) {
184 * Now that we have DRAM mapped and working, we can
185 * relocate the code and continue running from DRAM.
187 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
189 /* We can reserve some RAM "on top" here.
192 /* round down to next 4 kB limit.
195 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
197 /* Reserve memory for U-Boot code, data & bss
198 * round down to next 16 kB limit
201 addr &= ~(16 * 1024 - 1);
203 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
205 /* Reserve memory for malloc() arena.
207 addr_sp = addr - TOTAL_MALLOC_LEN;
208 debug ("Reserving %dk for malloc() at: %08lx\n",
209 TOTAL_MALLOC_LEN >> 10, addr_sp);
212 * (permanently) allocate a Board Info struct
213 * and a permanent copy of the "global" data
215 addr_sp -= sizeof(bd_t);
216 bd = (bd_t *)addr_sp;
218 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
219 sizeof(bd_t), addr_sp);
221 addr_sp -= sizeof(gd_t);
222 id = (gd_t *)addr_sp;
223 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
224 sizeof (gd_t), addr_sp);
226 /* Reserve memory for boot params.
228 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
229 bd->bi_boot_params = addr_sp;
230 debug ("Reserving %dk for boot params() at: %08lx\n",
231 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
234 * Finally, we set up a new (bigger) stack.
236 * Leave some safety gap for SP, force alignment on 16 byte boundary
237 * Clear initial stack frame
241 s = (ulong *)addr_sp;
245 debug ("Stack Pointer at: %08lx\n", addr_sp);
248 * Save local variables to board info struct
250 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
251 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
252 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
254 memcpy (id, (void *)gd, sizeof (gd_t));
256 /* On the purple board we copy the code in a special way
257 * in order to solve flash problems
263 relocate_code (addr_sp, id, addr);
265 /* NOTREACHED - relocate_code() does not return */
267 /************************************************************************
269 * This is the next part if the initialization sequence: we are now
270 * running from RAM and have a "normal" C environment, i. e. global
271 * data can be written, BSS has been cleared, the stack size in not
272 * that critical any more, etc.
274 ************************************************************************
277 void board_init_r (gd_t *id, ulong dest_addr)
279 #ifndef CONFIG_SYS_NO_FLASH
282 extern void malloc_bin_reloc (void);
283 #ifndef CONFIG_ENV_IS_NOWHERE
284 extern char * env_name_spec;
290 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
292 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
294 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
296 monitor_flash_len = (ulong)&uboot_end_data - dest_addr;
298 #if !defined(CONFIG_RELOC_FIXUP_WORKS)
300 * We have to relocate the command table manually
302 fixup_cmdtable(&__u_boot_cmd_start,
303 (ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
304 #endif /* !defined(CONFIG_RELOC_FIXUP_WORKS) */
306 /* there are some other pointer constants we must deal with */
307 #ifndef CONFIG_ENV_IS_NOWHERE
308 env_name_spec += gd->reloc_off;
313 /* The Malloc area is immediately below the monitor copy in DRAM */
314 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
315 TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
318 #ifndef CONFIG_SYS_NO_FLASH
319 /* configure available FLASH banks */
321 display_flash_config (size);
322 bd->bi_flashsize = size;
325 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
326 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
327 bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
329 bd->bi_flashoffset = 0;
332 #ifdef CONFIG_CMD_NAND
334 nand_init (); /* go init the NAND */
337 #if defined(CONFIG_CMD_ONENAND)
341 /* relocate environment function pointers etc. */
345 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
347 #if defined(CONFIG_PCI)
349 * Do pci configuration
354 /** leave this here (after malloc(), environment and PCI are working) **/
355 /* Initialize stdio devices */
360 /* Initialize the console (after the relocation and devices init) */
362 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
364 /* Initialize from environment */
365 if ((s = getenv ("loadaddr")) != NULL) {
366 load_addr = simple_strtoul (s, NULL, 16);
368 #if defined(CONFIG_CMD_NET)
369 if ((s = getenv ("bootfile")) != NULL) {
370 copy_filename (BootFile, s, sizeof (BootFile));
374 #ifdef CONFIG_CMD_SPI
376 spi_init (); /* go init the SPI */
380 #if defined(CONFIG_MISC_INIT_R)
381 /* miscellaneous platform dependent initialisations */
385 #ifdef CONFIG_BITBANGMII
388 #if defined(CONFIG_CMD_NET)
389 #if defined(CONFIG_NET_MULTI)
392 eth_initialize(gd->bd);
395 /* main_loop() can return to retry autoboot, if so just run it again. */
400 /* NOTREACHED - no way out of command loop except booting */
405 puts ("### ERROR ### Please RESET the board ###\n");