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 * mips_io_port_base is the begin of the address space to which x86 style
64 * I/O ports are mapped.
66 unsigned long mips_io_port_base = -1;
68 int __board_early_init_f(void)
71 * Nothing to do in this dummy implementation
75 int board_early_init_f(void) __attribute__((weak, alias("__board_early_init_f")));
78 static int init_func_ram (void)
80 #ifdef CONFIG_BOARD_TYPES
81 int board_type = gd->board_type;
83 int board_type = 0; /* use dummy arg */
87 if ((gd->ram_size = initdram (board_type)) > 0) {
88 print_size (gd->ram_size, "\n");
95 static int display_banner(void)
98 printf ("\n\n%s\n\n", version_string);
102 #ifndef CONFIG_SYS_NO_FLASH
103 static void display_flash_config(ulong size)
106 print_size (size, "\n");
110 static int init_baudrate (void)
112 char tmp[64]; /* long enough for environment variables */
113 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
115 gd->baudrate = (i > 0)
116 ? (int) simple_strtoul (tmp, NULL, 10)
124 * Breath some life into the board...
126 * The first part of initialization is running from Flash memory;
127 * its main purpose is to initialize the RAM so that we
128 * can relocate the monitor code to RAM.
132 * All attempts to come up with a "common" initialization sequence
133 * that works for all boards and architectures failed: some of the
134 * requirements are just _too_ different. To get rid of the resulting
135 * mess of board dependend #ifdef'ed code we now make the whole
136 * initialization sequence configurable to the user.
138 * The requirements for any new initalization function is simple: it
139 * receives a pointer to the "global data" structure as it's only
140 * argument, and returns an integer return code, where 0 means
141 * "continue" and != 0 means "fatal error, hang the system".
143 typedef int (init_fnc_t) (void);
145 init_fnc_t *init_sequence[] = {
148 env_init, /* initialize environment */
149 #ifdef CONFIG_INCA_IP
150 incaip_set_cpuclk, /* set cpu clock according to environment variable */
152 init_baudrate, /* initialze baudrate settings */
153 serial_init, /* serial communications setup */
155 display_banner, /* say that we are here */
162 void board_init_f(ulong bootflag)
166 init_fnc_t **init_fnc_ptr;
167 ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
170 void copy_code (ulong);
173 /* Pointer is writable since we allocated a register for it.
176 /* compiler optimization barrier needed for GCC >= 3.4 */
177 __asm__ __volatile__("": : :"memory");
179 memset ((void *)gd, 0, sizeof (gd_t));
181 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
182 if ((*init_fnc_ptr)() != 0) {
188 * Now that we have DRAM mapped and working, we can
189 * relocate the code and continue running from DRAM.
191 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
193 /* We can reserve some RAM "on top" here.
196 /* round down to next 4 kB limit.
199 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
201 /* Reserve memory for U-Boot code, data & bss
202 * round down to next 16 kB limit
205 addr &= ~(16 * 1024 - 1);
207 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
209 /* Reserve memory for malloc() arena.
211 addr_sp = addr - TOTAL_MALLOC_LEN;
212 debug ("Reserving %dk for malloc() at: %08lx\n",
213 TOTAL_MALLOC_LEN >> 10, addr_sp);
216 * (permanently) allocate a Board Info struct
217 * and a permanent copy of the "global" data
219 addr_sp -= sizeof(bd_t);
220 bd = (bd_t *)addr_sp;
222 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
223 sizeof(bd_t), addr_sp);
225 addr_sp -= sizeof(gd_t);
226 id = (gd_t *)addr_sp;
227 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
228 sizeof (gd_t), addr_sp);
230 /* Reserve memory for boot params.
232 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
233 bd->bi_boot_params = addr_sp;
234 debug ("Reserving %dk for boot params() at: %08lx\n",
235 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
238 * Finally, we set up a new (bigger) stack.
240 * Leave some safety gap for SP, force alignment on 16 byte boundary
241 * Clear initial stack frame
245 s = (ulong *)addr_sp;
249 debug ("Stack Pointer at: %08lx\n", addr_sp);
252 * Save local variables to board info struct
254 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
255 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
256 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
258 memcpy (id, (void *)gd, sizeof (gd_t));
260 /* On the purple board we copy the code in a special way
261 * in order to solve flash problems
267 relocate_code (addr_sp, id, addr);
269 /* NOTREACHED - relocate_code() does not return */
271 /************************************************************************
273 * This is the next part if the initialization sequence: we are now
274 * running from RAM and have a "normal" C environment, i. e. global
275 * data can be written, BSS has been cleared, the stack size in not
276 * that critical any more, etc.
278 ************************************************************************
281 void board_init_r (gd_t *id, ulong dest_addr)
284 #ifndef CONFIG_SYS_NO_FLASH
287 extern void malloc_bin_reloc (void);
288 #ifndef CONFIG_ENV_IS_NOWHERE
289 extern char * env_name_spec;
295 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
297 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
299 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
301 monitor_flash_len = (ulong)&uboot_end_data - dest_addr;
304 * We have to relocate the command table manually
306 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
309 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
311 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
312 cmdtp->name, (ulong) (cmdtp->cmd), addr);
315 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
317 addr = (ulong)(cmdtp->name) + gd->reloc_off;
318 cmdtp->name = (char *)addr;
321 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
322 cmdtp->usage = (char *)addr;
324 #ifdef CONFIG_SYS_LONGHELP
326 addr = (ulong)(cmdtp->help) + gd->reloc_off;
327 cmdtp->help = (char *)addr;
331 /* there are some other pointer constants we must deal with */
332 #ifndef CONFIG_ENV_IS_NOWHERE
333 env_name_spec += gd->reloc_off;
338 /* The Malloc area is immediately below the monitor copy in DRAM */
339 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
340 TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
343 #ifndef CONFIG_SYS_NO_FLASH
344 /* configure available FLASH banks */
346 display_flash_config (size);
347 bd->bi_flashsize = size;
350 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
351 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
352 bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
354 bd->bi_flashoffset = 0;
357 #ifdef CONFIG_CMD_NAND
359 nand_init (); /* go init the NAND */
362 #if defined(CONFIG_CMD_ONENAND)
366 /* relocate environment function pointers etc. */
370 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
372 #if defined(CONFIG_PCI)
374 * Do pci configuration
379 /** leave this here (after malloc(), environment and PCI are working) **/
380 /* Initialize stdio devices */
385 /* Initialize the console (after the relocation and devices init) */
387 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
389 /* Initialize from environment */
390 if ((s = getenv ("loadaddr")) != NULL) {
391 load_addr = simple_strtoul (s, NULL, 16);
393 #if defined(CONFIG_CMD_NET)
394 if ((s = getenv ("bootfile")) != NULL) {
395 copy_filename (BootFile, s, sizeof (BootFile));
399 #ifdef CONFIG_CMD_SPI
401 spi_init (); /* go init the SPI */
405 #if defined(CONFIG_MISC_INIT_R)
406 /* miscellaneous platform dependent initialisations */
410 #if defined(CONFIG_CMD_NET)
411 #if defined(CONFIG_NET_MULTI)
414 eth_initialize(gd->bd);
417 /* main_loop() can return to retry autoboot, if so just run it again. */
422 /* NOTREACHED - no way out of command loop except booting */
427 puts ("### ERROR ### Please RESET the board ###\n");