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;
41 ulong monitor_flash_len;
43 static char *failed = "*** failed ***\n";
46 * mips_io_port_base is the begin of the address space to which x86 style
47 * I/O ports are mapped.
49 unsigned long mips_io_port_base = -1;
51 int __board_early_init_f(void)
54 * Nothing to do in this dummy implementation
58 int board_early_init_f(void)
59 __attribute__((weak, alias("__board_early_init_f")));
61 static int init_func_ram(void)
63 #ifdef CONFIG_BOARD_TYPES
64 int board_type = gd->board_type;
66 int board_type = 0; /* use dummy arg */
70 gd->ram_size = initdram(board_type);
71 if (gd->ram_size > 0) {
72 print_size(gd->ram_size, "\n");
79 static int display_banner(void)
82 printf("\n\n%s\n\n", version_string);
86 #ifndef CONFIG_SYS_NO_FLASH
87 static void display_flash_config(ulong size)
90 print_size(size, "\n");
94 static int init_baudrate(void)
96 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
102 * Breath some life into the board...
104 * The first part of initialization is running from Flash memory;
105 * its main purpose is to initialize the RAM so that we
106 * can relocate the monitor code to RAM.
110 * All attempts to come up with a "common" initialization sequence
111 * that works for all boards and architectures failed: some of the
112 * requirements are just _too_ different. To get rid of the resulting
113 * mess of board dependend #ifdef'ed code we now make the whole
114 * initialization sequence configurable to the user.
116 * The requirements for any new initalization function is simple: it
117 * receives a pointer to the "global data" structure as it's only
118 * argument, and returns an integer return code, where 0 means
119 * "continue" and != 0 means "fatal error, hang the system".
121 typedef int (init_fnc_t)(void);
123 init_fnc_t *init_sequence[] = {
126 env_init, /* initialize environment */
127 #ifdef CONFIG_INCA_IP
128 incaip_set_cpuclk, /* set cpu clock according to env. variable */
130 init_baudrate, /* initialize baudrate settings */
131 serial_init, /* serial communications setup */
133 display_banner, /* say that we are here */
140 void board_init_f(ulong bootflag)
144 init_fnc_t **init_fnc_ptr;
145 ulong addr, addr_sp, len = (ulong)&uboot_end - CONFIG_SYS_MONITOR_BASE;
148 /* Pointer is writable since we allocated a register for it.
151 /* compiler optimization barrier needed for GCC >= 3.4 */
152 __asm__ __volatile__("" : : : "memory");
154 memset((void *)gd, 0, sizeof(gd_t));
156 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
157 if ((*init_fnc_ptr)() != 0)
162 * Now that we have DRAM mapped and working, we can
163 * relocate the code and continue running from DRAM.
165 addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
167 /* We can reserve some RAM "on top" here.
170 /* round down to next 4 kB limit.
173 debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
175 /* Reserve memory for U-Boot code, data & bss
176 * round down to next 16 kB limit
179 addr &= ~(16 * 1024 - 1);
181 debug("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
183 /* Reserve memory for malloc() arena.
185 addr_sp = addr - TOTAL_MALLOC_LEN;
186 debug("Reserving %dk for malloc() at: %08lx\n",
187 TOTAL_MALLOC_LEN >> 10, addr_sp);
190 * (permanently) allocate a Board Info struct
191 * and a permanent copy of the "global" data
193 addr_sp -= sizeof(bd_t);
194 bd = (bd_t *)addr_sp;
196 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
197 sizeof(bd_t), addr_sp);
199 addr_sp -= sizeof(gd_t);
200 id = (gd_t *)addr_sp;
201 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
202 sizeof(gd_t), addr_sp);
204 /* Reserve memory for boot params.
206 addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
207 bd->bi_boot_params = addr_sp;
208 debug("Reserving %dk for boot params() at: %08lx\n",
209 CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
212 * Finally, we set up a new (bigger) stack.
214 * Leave some safety gap for SP, force alignment on 16 byte boundary
215 * Clear initial stack frame
219 s = (ulong *)addr_sp;
223 debug("Stack Pointer at: %08lx\n", addr_sp);
226 * Save local variables to board info struct
228 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of DRAM */
229 bd->bi_memsize = gd->ram_size; /* size of DRAM in bytes */
230 bd->bi_baudrate = gd->baudrate; /* Console Baudrate */
232 memcpy(id, (void *)gd, sizeof(gd_t));
234 relocate_code(addr_sp, id, addr);
236 /* NOTREACHED - relocate_code() does not return */
240 * This is the next part if the initialization sequence: we are now
241 * running from RAM and have a "normal" C environment, i. e. global
242 * data can be written, BSS has been cleared, the stack size in not
243 * that critical any more, etc.
246 void board_init_r(gd_t *id, ulong dest_addr)
248 #ifndef CONFIG_SYS_NO_FLASH
251 #ifndef CONFIG_ENV_IS_NOWHERE
252 extern char *env_name_spec;
257 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
259 debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
261 gd->reloc_off = dest_addr - CONFIG_SYS_MONITOR_BASE;
263 monitor_flash_len = (ulong)&uboot_end_data - dest_addr;
265 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
267 * We have to relocate the command table manually
269 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
270 ll_entry_count(cmd_tbl_t, cmd));
271 #endif /* defined(CONFIG_NEEDS_MANUAL_RELOC) */
273 /* there are some other pointer constants we must deal with */
274 #ifndef CONFIG_ENV_IS_NOWHERE
275 env_name_spec += gd->reloc_off;
280 /* The Malloc area is immediately below the monitor copy in DRAM */
281 mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
282 TOTAL_MALLOC_LEN, TOTAL_MALLOC_LEN);
285 #ifndef CONFIG_SYS_NO_FLASH
286 /* configure available FLASH banks */
288 display_flash_config(size);
289 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
290 bd->bi_flashsize = size;
292 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
293 bd->bi_flashoffset = monitor_flash_len; /* reserved area for U-Boot */
295 bd->bi_flashoffset = 0;
298 bd->bi_flashstart = 0;
299 bd->bi_flashsize = 0;
300 bd->bi_flashoffset = 0;
303 #ifdef CONFIG_CMD_NAND
305 nand_init(); /* go init the NAND */
308 #if defined(CONFIG_CMD_ONENAND)
312 /* relocate environment function pointers etc. */
315 #if defined(CONFIG_PCI)
317 * Do pci configuration
322 /** leave this here (after malloc(), environment and PCI are working) **/
323 /* Initialize stdio devices */
328 /* Initialize the console (after the relocation and devices init) */
330 /** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **/
332 /* Initialize from environment */
333 load_addr = getenv_ulong("loadaddr", 16, load_addr);
335 #ifdef CONFIG_CMD_SPI
337 spi_init(); /* go init the SPI */
341 #if defined(CONFIG_MISC_INIT_R)
342 /* miscellaneous platform dependent initialisations */
346 #ifdef CONFIG_BITBANGMII
349 #if defined(CONFIG_CMD_NET)
351 eth_initialize(gd->bd);
354 /* main_loop() can return to retry autoboot, if so just run it again. */
358 /* NOTREACHED - no way out of command loop except booting */
363 puts("### ERROR ### Please RESET the board ###\n");