2 * (C) Copyright 2007 Michal Simek
3 * (C) Copyright 2004 Atmark Techno, Inc.
5 * Michal SIMEK <monstr@monstr.eu>
6 * Yasushi SHOJI <yashi@atmark-techno.com>
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 #include <stdio_dev.h>
35 #include <linux/compiler.h>
36 #include <asm/processor.h>
37 #include <asm/microblaze_intc.h>
40 DECLARE_GLOBAL_DATA_PTR;
43 * All attempts to come up with a "common" initialization sequence
44 * that works for all boards and architectures failed: some of the
45 * requirements are just _too_ different. To get rid of the resulting
46 * mess of board dependend #ifdef'ed code we now make the whole
47 * initialization sequence configurable to the user.
49 * The requirements for any new initalization function is simple: it
50 * receives a pointer to the "global data" structure as it's only
51 * argument, and returns an integer return code, where 0 means
52 * "continue" and != 0 means "fatal error, hang the system".
54 typedef int (init_fnc_t) (void);
56 init_fnc_t *init_sequence[] = {
58 #ifdef CONFIG_OF_CONTROL
68 unsigned long monitor_flash_len;
70 void board_init_f(ulong not_used)
73 init_fnc_t **init_fnc_ptr;
74 gd = (gd_t *) (CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET);
75 bd = (bd_t *) (CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET \
76 - GENERATED_BD_INFO_SIZE);
77 __maybe_unused char *s;
78 #if defined(CONFIG_CMD_FLASH)
81 asm ("nop"); /* FIXME gd is not initialize - wait */
82 memset ((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
83 memset ((void *)bd, 0, GENERATED_BD_INFO_SIZE);
85 gd->baudrate = CONFIG_BAUDRATE;
86 bd->bi_baudrate = CONFIG_BAUDRATE;
87 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
88 bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
89 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
91 monitor_flash_len = __end - __text_start;
93 #ifdef CONFIG_OF_EMBED
94 /* Get a pointer to the FDT */
95 gd->fdt_blob = _binary_dt_dtb_start;
96 #elif defined CONFIG_OF_SEPARATE
97 /* FDT is at end of image */
98 gd->fdt_blob = (void *)__end;
100 /* Allow the early environment to override the fdt address */
101 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
102 (uintptr_t)gd->fdt_blob);
105 * The Malloc area is immediately below the monitor copy in DRAM
106 * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off
107 * as our monitory code is run from SDRAM
109 mem_malloc_init (CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
113 for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
115 if ((*init_fnc_ptr) () != 0) {
120 #ifdef CONFIG_OF_CONTROL
121 /* For now, put this check after the console is ready */
122 if (fdtdec_prepare_fdt()) {
123 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
124 "doc/README.fdt-control");
126 printf("DTB: 0x%x\n", (u32)gd->fdt_blob);
130 printf ("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF");
131 printf ("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF");
132 printf ("\tU-Boot Start:0x%08x\n", CONFIG_SYS_TEXT_BASE);
134 #if defined(CONFIG_CMD_FLASH)
136 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
137 flash_size = flash_init();
138 if (bd->bi_flashstart && flash_size > 0) {
139 # ifdef CONFIG_SYS_FLASH_CHECKSUM
140 print_size (flash_size, "");
142 * Compute and print flash CRC if flashchecksum is set to 'y'
144 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
146 s = getenv ("flashchecksum");
147 if (s && (*s == 'y')) {
148 printf (" CRC: %08X",
149 crc32(0, (const u8 *)bd->bi_flashstart,
154 # else /* !CONFIG_SYS_FLASH_CHECKSUM */
155 print_size (flash_size, "\n");
156 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
157 bd->bi_flashsize = flash_size;
158 bd->bi_flashoffset = bd->bi_flashstart + flash_size;
160 puts ("Flash init FAILED");
161 bd->bi_flashstart = 0;
162 bd->bi_flashsize = 0;
163 bd->bi_flashoffset = 0;
167 /* relocate environment function pointers etc. */
170 /* Initialize stdio devices */
173 /* Initialize the jump table for applications */
176 /* Initialize the console (after the relocation and devices init) */
181 /* Initialize from environment */
182 load_addr = getenv_ulong("loadaddr", 16, load_addr);
184 #if defined(CONFIG_CMD_NET)
186 eth_initialize(gd->bd);
189 eth_getenv_enetaddr("ethaddr", enetaddr);
190 printf("MAC: %pM\n", enetaddr);
202 puts ("### ERROR ### Please RESET the board ###\n");