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,
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;
76 * The Malloc area is immediately below the monitor copy in DRAM
78 static void mem_malloc_init (void)
80 ulong dest_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
82 mem_malloc_end = dest_addr;
83 mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
84 mem_malloc_brk = mem_malloc_start;
86 memset ((void *) mem_malloc_start,
88 mem_malloc_end - mem_malloc_start);
91 void *sbrk (ptrdiff_t increment)
93 ulong old = mem_malloc_brk;
94 ulong new = old + increment;
96 if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
100 return ((void *) old);
104 static int init_func_ram (void)
106 #ifdef CONFIG_BOARD_TYPES
107 int board_type = gd->board_type;
109 int board_type = 0; /* use dummy arg */
113 if ((gd->ram_size = initdram (board_type)) > 0) {
114 print_size (gd->ram_size, "\n");
121 static int display_banner(void)
124 printf ("\n\n%s\n\n", version_string);
128 #ifndef CONFIG_SYS_NO_FLASH
129 static void display_flash_config(ulong size)
132 print_size (size, "\n");
136 static int init_baudrate (void)
138 char tmp[64]; /* long enough for environment variables */
139 int i = getenv_r ("baudrate", tmp, sizeof (tmp));
141 gd->baudrate = (i > 0)
142 ? (int) simple_strtoul (tmp, NULL, 10)
150 * Breath some life into the board...
152 * The first part of initialization is running from Flash memory;
153 * its main purpose is to initialize the RAM so that we
154 * can relocate the monitor code to RAM.
158 * All attempts to come up with a "common" initialization sequence
159 * that works for all boards and architectures failed: some of the
160 * requirements are just _too_ different. To get rid of the resulting
161 * mess of board dependend #ifdef'ed code we now make the whole
162 * initialization sequence configurable to the user.
164 * The requirements for any new initalization function is simple: it
165 * receives a pointer to the "global data" structure as it's only
166 * argument, and returns an integer return code, where 0 means
167 * "continue" and != 0 means "fatal error, hang the system".
169 typedef int (init_fnc_t) (void);
171 init_fnc_t *init_sequence[] = {
173 env_init, /* initialize environment */
174 #ifdef CONFIG_INCA_IP
175 incaip_set_cpuclk, /* set cpu clock according to environment variable */
177 init_baudrate, /* initialze baudrate settings */
178 serial_init, /* serial communications setup */
180 display_banner, /* say that we are here */
187 void board_init_f(ulong bootflag)
191 init_fnc_t **init_fnc_ptr;
192 ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
195 void copy_code (ulong);
198 /* Pointer is writable since we allocated a register for it.
201 /* compiler optimization barrier needed for GCC >= 3.4 */
202 __asm__ __volatile__("": : :"memory");
204 memset ((void *)gd, 0, sizeof (gd_t));
206 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
207 if ((*init_fnc_ptr)() != 0) {
213 * Now that we have DRAM mapped and working, we can
214 * relocate the code and continue running from DRAM.
216 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
218 /* We can reserve some RAM "on top" here.
221 /* round down to next 4 kB limit.
224 debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
226 /* Reserve memory for U-Boot code, data & bss
227 * round down to next 16 kB limit
230 addr &= ~(16 * 1024 - 1);
232 debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
234 /* Reserve memory for malloc() arena.
236 addr_sp = addr - TOTAL_MALLOC_LEN;
237 debug ("Reserving %dk for malloc() at: %08lx\n",
238 TOTAL_MALLOC_LEN >> 10, addr_sp);
241 * (permanently) allocate a Board Info struct
242 * and a permanent copy of the "global" data
244 addr_sp -= sizeof(bd_t);
245 bd = (bd_t *)addr_sp;
247 debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
248 sizeof(bd_t), addr_sp);
250 addr_sp -= sizeof(gd_t);
251 id = (gd_t *)addr_sp;
252 debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
253 sizeof (gd_t), addr_sp);
255 /* Reserve memory for boot params.
257 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
258 bd->bi_boot_params = addr_sp;
259 debug ("Reserving %dk for boot params() at: %08lx\n",
260 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
263 * Finally, we set up a new (bigger) stack.
265 * Leave some safety gap for SP, force alignment on 16 byte boundary
266 * Clear initial stack frame
270 s = (ulong *)addr_sp;
274 debug ("Stack Pointer at: %08lx\n", addr_sp);
277 * Save local variables to board info struct
279 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM memory */
280 bd->bi_memsize = gd->ram_size; /* size of DRAM memory in bytes */
281 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
283 memcpy (id, (void *)gd, sizeof (gd_t));
285 /* On the purple board we copy the code in a special way
286 * in order to solve flash problems
292 relocate_code (addr_sp, id, addr);
294 /* NOTREACHED - relocate_code() does not return */
296 /************************************************************************
298 * This is the next part if the initialization sequence: we are now
299 * running from RAM and have a "normal" C environment, i. e. global
300 * data can be written, BSS has been cleared, the stack size in not
301 * that critical any more, etc.
303 ************************************************************************
306 void board_init_r (gd_t *id, ulong dest_addr)
309 #ifndef CONFIG_SYS_NO_FLASH
312 extern void malloc_bin_reloc (void);
313 #ifndef CONFIG_ENV_IS_NOWHERE
314 extern char * env_name_spec;
321 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
323 debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
325 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
327 monitor_flash_len = (ulong)&uboot_end_data - dest_addr;
330 * We have to relocate the command table manually
332 for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
335 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
337 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
338 cmdtp->name, (ulong) (cmdtp->cmd), addr);
341 (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
343 addr = (ulong)(cmdtp->name) + gd->reloc_off;
344 cmdtp->name = (char *)addr;
347 addr = (ulong)(cmdtp->usage) + gd->reloc_off;
348 cmdtp->usage = (char *)addr;
350 #ifdef CONFIG_SYS_LONGHELP
352 addr = (ulong)(cmdtp->help) + gd->reloc_off;
353 cmdtp->help = (char *)addr;
357 /* there are some other pointer constants we must deal with */
358 #ifndef CONFIG_ENV_IS_NOWHERE
359 env_name_spec += gd->reloc_off;
364 #ifndef CONFIG_SYS_NO_FLASH
365 /* configure available FLASH banks */
367 display_flash_config (size);
368 bd->bi_flashsize = size;
371 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
372 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
373 bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
375 bd->bi_flashoffset = 0;
378 /* initialize malloc() area */
382 #ifdef CONFIG_CMD_NAND
384 nand_init (); /* go init the NAND */
387 #if defined(CONFIG_CMD_ONENAND)
391 /* relocate environment function pointers etc. */
394 /* board MAC address */
395 s = getenv ("ethaddr");
396 for (i = 0; i < 6; ++i) {
397 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
399 s = (*e) ? e + 1 : e;
403 bd->bi_ip_addr = getenv_IPaddr("ipaddr");
405 #if defined(CONFIG_PCI)
407 * Do pci configuration
412 /** leave this here (after malloc(), environment and PCI are working) **/
413 /* Initialize devices */
418 /* Initialize the console (after the relocation and devices init) */
420 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
422 /* Initialize from environment */
423 if ((s = getenv ("loadaddr")) != NULL) {
424 load_addr = simple_strtoul (s, NULL, 16);
426 #if defined(CONFIG_CMD_NET)
427 if ((s = getenv ("bootfile")) != NULL) {
428 copy_filename (BootFile, s, sizeof (BootFile));
432 #ifdef CONFIG_CMD_SPI
434 spi_init (); /* go init the SPI */
438 #if defined(CONFIG_MISC_INIT_R)
439 /* miscellaneous platform dependent initialisations */
443 #if defined(CONFIG_CMD_NET)
444 #if defined(CONFIG_NET_MULTI)
447 eth_initialize(gd->bd);
450 /* main_loop() can return to retry autoboot, if so just run it again. */
455 /* NOTREACHED - no way out of command loop except booting */
460 puts ("### ERROR ### Please RESET the board ###\n");