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>
30 #include <environment.h>
32 #include <onenand_uboot.h>
35 #ifdef CONFIG_BITBANGMII
39 DECLARE_GLOBAL_DATA_PTR;
43 extern int timer_init(void);
45 extern int incaip_set_cpuclk(void);
47 extern ulong uboot_end_data;
48 extern ulong uboot_end;
50 ulong monitor_flash_len;
52 static char *failed = "*** failed ***\n";
55 * mips_io_port_base is the begin of the address space to which x86 style
56 * I/O ports are mapped.
58 unsigned long mips_io_port_base = -1;
60 int __board_early_init_f(void)
63 * Nothing to do in this dummy implementation
67 int board_early_init_f(void) __attribute__((weak, alias("__board_early_init_f")));
70 static int init_func_ram (void)
72 #ifdef CONFIG_BOARD_TYPES
73 int board_type = gd->board_type;
75 int board_type = 0; /* use dummy arg */
79 if ((gd->ram_size = initdram (board_type)) > 0) {
80 print_size (gd->ram_size, "\n");
87 static int display_banner(void)
90 printf ("\n\n%s\n\n", version_string);
94 #ifndef CONFIG_SYS_NO_FLASH
95 static void display_flash_config(ulong size)
98 print_size (size, "\n");
102 static int init_baudrate (void)
104 char tmp[64]; /* long enough for environment variables */
105 int i = getenv_f("baudrate", tmp, sizeof (tmp));
107 gd->baudrate = (i > 0)
108 ? (int) simple_strtoul (tmp, NULL, 10)
116 * Breath some life into the board...
118 * The first part of initialization is running from Flash memory;
119 * its main purpose is to initialize the RAM so that we
120 * can relocate the monitor code to RAM.
124 * All attempts to come up with a "common" initialization sequence
125 * that works for all boards and architectures failed: some of the
126 * requirements are just _too_ different. To get rid of the resulting
127 * mess of board dependend #ifdef'ed code we now make the whole
128 * initialization sequence configurable to the user.
130 * The requirements for any new initalization function is simple: it
131 * receives a pointer to the "global data" structure as it's only
132 * argument, and returns an integer return code, where 0 means
133 * "continue" and != 0 means "fatal error, hang the system".
135 typedef int (init_fnc_t) (void);
137 init_fnc_t *init_sequence[] = {
140 env_init, /* initialize environment */
141 #ifdef CONFIG_INCA_IP
142 incaip_set_cpuclk, /* set cpu clock according to environment variable */
144 init_baudrate, /* initialze baudrate settings */
145 serial_init, /* serial communications setup */
147 display_banner, /* say that we are here */
154 void board_init_f(ulong bootflag)
158 init_fnc_t **init_fnc_ptr;
159 ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
162 /* Pointer is writable since we allocated a register for it.
165 /* compiler optimization barrier needed for GCC >= 3.4 */
166 __asm__ __volatile__("": : :"memory");
168 memset ((void *)gd, 0, sizeof (gd_t));
170 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
171 if ((*init_fnc_ptr)() != 0) {
177 * Now that we have DRAM mapped and working, we can
178 * relocate the code and continue running from DRAM.
180 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
182 /* We can reserve some RAM "on top" here.
185 /* round down to next 4 kB limit.
188 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
190 /* Reserve memory for U-Boot code, data & bss
191 * round down to next 16 kB limit
194 addr &= ~(16 * 1024 - 1);
196 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
198 /* Reserve memory for malloc() arena.
200 addr_sp = addr - TOTAL_MALLOC_LEN;
201 debug ("Reserving %dk for malloc() at: %08lx\n",
202 TOTAL_MALLOC_LEN >> 10, addr_sp);
205 * (permanently) allocate a Board Info struct
206 * and a permanent copy of the "global" data
208 addr_sp -= sizeof(bd_t);
209 bd = (bd_t *)addr_sp;
211 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
212 sizeof(bd_t), addr_sp);
214 addr_sp -= sizeof(gd_t);
215 id = (gd_t *)addr_sp;
216 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
217 sizeof (gd_t), addr_sp);
219 /* Reserve memory for boot params.
221 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
222 bd->bi_boot_params = addr_sp;
223 debug ("Reserving %dk for boot params() at: %08lx\n",
224 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
227 * Finally, we set up a new (bigger) stack.
229 * Leave some safety gap for SP, force alignment on 16 byte boundary
230 * Clear initial stack frame
234 s = (ulong *)addr_sp;
238 debug ("Stack Pointer at: %08lx\n", addr_sp);
241 * Save local variables to board info struct
243 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
244 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
245 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
247 memcpy (id, (void *)gd, sizeof (gd_t));
249 relocate_code (addr_sp, id, addr);
251 /* NOTREACHED - relocate_code() does not return */
253 /************************************************************************
255 * This is the next part if the initialization sequence: we are now
256 * running from RAM and have a "normal" C environment, i. e. global
257 * data can be written, BSS has been cleared, the stack size in not
258 * that critical any more, etc.
260 ************************************************************************
263 void board_init_r (gd_t *id, ulong dest_addr)
265 #ifndef CONFIG_SYS_NO_FLASH
268 extern void malloc_bin_reloc (void);
269 #ifndef CONFIG_ENV_IS_NOWHERE
270 extern char * env_name_spec;
276 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
278 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
280 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
282 monitor_flash_len = (ulong)&uboot_end_data - dest_addr;
284 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
286 * We have to relocate the command table manually
288 fixup_cmdtable(&__u_boot_cmd_start,
289 (ulong)(&__u_boot_cmd_end - &__u_boot_cmd_start));
290 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
292 /* there are some other pointer constants we must deal with */
293 #ifndef CONFIG_ENV_IS_NOWHERE
294 env_name_spec += gd->reloc_off;
299 /* The Malloc area is immediately below the monitor copy in DRAM */
300 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
301 TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
304 #ifndef CONFIG_SYS_NO_FLASH
305 /* configure available FLASH banks */
307 display_flash_config (size);
308 bd->bi_flashsize = size;
311 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
312 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
313 bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
315 bd->bi_flashoffset = 0;
318 #ifdef CONFIG_CMD_NAND
320 nand_init (); /* go init the NAND */
323 #if defined(CONFIG_CMD_ONENAND)
327 /* relocate environment function pointers etc. */
331 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
333 #if defined(CONFIG_PCI)
335 * Do pci configuration
340 /** leave this here (after malloc(), environment and PCI are working) **/
341 /* Initialize stdio devices */
346 /* Initialize the console (after the relocation and devices init) */
348 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
350 /* Initialize from environment */
351 if ((s = getenv ("loadaddr")) != NULL) {
352 load_addr = simple_strtoul (s, NULL, 16);
354 #if defined(CONFIG_CMD_NET)
355 if ((s = getenv ("bootfile")) != NULL) {
356 copy_filename (BootFile, s, sizeof (BootFile));
360 #ifdef CONFIG_CMD_SPI
362 spi_init (); /* go init the SPI */
366 #if defined(CONFIG_MISC_INIT_R)
367 /* miscellaneous platform dependent initialisations */
371 #ifdef CONFIG_BITBANGMII
374 #if defined(CONFIG_CMD_NET)
375 #if defined(CONFIG_NET_MULTI)
378 eth_initialize(gd->bd);
381 /* main_loop() can return to retry autoboot, if so just run it again. */
386 /* NOTREACHED - no way out of command loop except booting */
391 puts ("### ERROR ### Please RESET the board ###\n");