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1 | /* |
2 | * U-boot - board.c First C file to be called contains init routines | |
3 | * | |
4 | * Copyright (c) 2005 blackfin.uclinux.org | |
5 | * | |
6 | * (C) Copyright 2000-2004 | |
7 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
8 | * | |
9 | * See file CREDITS for list of people who contributed to this | |
10 | * project. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or | |
13 | * modify it under the terms of the GNU General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of | |
15 | * the License, or (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
25 | * MA 02111-1307 USA | |
26 | */ | |
27 | ||
28 | #include <common.h> | |
29 | #include <command.h> | |
30 | #include <malloc.h> | |
31 | #include <devices.h> | |
32 | #include <version.h> | |
33 | #include <net.h> | |
34 | #include <environment.h> | |
35 | #include "blackfin_board.h" | |
36 | #include "../drivers/smc91111.h" | |
37 | ||
38 | extern flash_info_t flash_info[]; | |
39 | ||
40 | ||
41 | static void mem_malloc_init(void) | |
42 | { | |
43 | mem_malloc_start = CFG_MALLOC_BASE; | |
44 | mem_malloc_end = (CFG_MALLOC_BASE + CFG_MALLOC_LEN); | |
45 | mem_malloc_brk = mem_malloc_start; | |
46 | memset((void *) mem_malloc_start, 0, | |
47 | mem_malloc_end - mem_malloc_start); | |
48 | } | |
49 | ||
50 | void *sbrk(ptrdiff_t increment) | |
51 | { | |
52 | ulong old = mem_malloc_brk; | |
53 | ulong new = old + increment; | |
54 | ||
55 | if ((new < mem_malloc_start) || (new > mem_malloc_end)) { | |
56 | return (NULL); | |
57 | } | |
58 | mem_malloc_brk = new; | |
59 | ||
60 | return ((void *) old); | |
61 | } | |
62 | ||
63 | static int display_banner(void) | |
64 | { | |
65 | sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING); | |
66 | printf("%s\n", version_string); | |
67 | return (0); | |
68 | } | |
69 | ||
70 | static void display_flash_config(ulong size) | |
71 | { | |
72 | puts("FLASH: "); | |
73 | print_size(size, "\n"); | |
74 | return; | |
75 | } | |
76 | ||
77 | static int init_baudrate(void) | |
78 | { | |
79 | DECLARE_GLOBAL_DATA_PTR; | |
80 | ||
81 | uchar tmp[64]; | |
82 | int i = getenv_r("baudrate", tmp, sizeof(tmp)); | |
83 | gd->bd->bi_baudrate = gd->baudrate = (i > 0) | |
84 | ? (int) simple_strtoul(tmp, NULL, 10) | |
85 | : CONFIG_BAUDRATE; | |
86 | return (0); | |
87 | } | |
88 | ||
89 | #ifdef DEBUG | |
90 | static void display_global_data(void) | |
91 | { | |
92 | DECLARE_GLOBAL_DATA_PTR; | |
93 | bd_t *bd; | |
94 | bd = gd->bd; | |
95 | printf("--flags:%x\n", gd->flags); | |
96 | printf("--board_type:%x\n", gd->board_type); | |
97 | printf("--baudrate:%x\n", gd->baudrate); | |
98 | printf("--have_console:%x\n", gd->have_console); | |
99 | printf("--ram_size:%x\n", gd->ram_size); | |
100 | printf("--reloc_off:%x\n", gd->reloc_off); | |
101 | printf("--env_addr:%x\n", gd->env_addr); | |
102 | printf("--env_valid:%x\n", gd->env_valid); | |
103 | printf("--bd:%x %x\n", gd->bd, bd); | |
104 | printf("---bi_baudrate:%x\n", bd->bi_baudrate); | |
105 | printf("---bi_ip_addr:%x\n", bd->bi_ip_addr); | |
106 | printf("---bi_enetaddr:%x %x %x %x %x %x\n", | |
107 | bd->bi_enetaddr[0], | |
108 | bd->bi_enetaddr[1], | |
109 | bd->bi_enetaddr[2], | |
110 | bd->bi_enetaddr[3], | |
111 | bd->bi_enetaddr[4], | |
112 | bd->bi_enetaddr[5]); | |
113 | printf("---bi_arch_number:%x\n", bd->bi_arch_number); | |
114 | printf("---bi_boot_params:%x\n", bd->bi_boot_params); | |
115 | printf("---bi_memstart:%x\n", bd->bi_memstart); | |
116 | printf("---bi_memsize:%x\n", bd->bi_memsize); | |
117 | printf("---bi_flashstart:%x\n", bd->bi_flashstart); | |
118 | printf("---bi_flashsize:%x\n", bd->bi_flashsize); | |
119 | printf("---bi_flashoffset:%x\n", bd->bi_flashoffset); | |
120 | printf("--jt:%x *:%x\n", gd->jt, *(gd->jt)); | |
121 | } | |
122 | #endif | |
123 | ||
124 | /* | |
125 | * All attempts to come up with a "common" initialization sequence | |
126 | * that works for all boards and architectures failed: some of the | |
127 | * requirements are just _too_ different. To get rid of the resulting | |
128 | * mess of board dependend #ifdef'ed code we now make the whole | |
129 | * initialization sequence configurable to the user. | |
130 | * | |
131 | * The requirements for any new initalization function is simple: it | |
132 | * receives a pointer to the "global data" structure as it's only | |
133 | * argument, and returns an integer return code, where 0 means | |
134 | * "continue" and != 0 means "fatal error, hang the system". | |
135 | */ | |
136 | ||
137 | void board_init_f(ulong bootflag) | |
138 | { | |
139 | DECLARE_GLOBAL_DATA_PTR; | |
140 | ulong addr; | |
141 | bd_t *bd; | |
142 | ||
143 | gd = (gd_t *) (CFG_GBL_DATA_ADDR); | |
144 | memset((void *) gd, 0, sizeof(gd_t)); | |
145 | ||
146 | /* Board data initialization */ | |
147 | addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t)); | |
148 | ||
149 | /* Align to 4 byte boundary */ | |
150 | addr &= ~(4 - 1); | |
151 | bd = (bd_t*)addr; | |
152 | gd->bd = bd; | |
153 | memset((void *) bd, 0, sizeof(bd_t)); | |
154 | ||
155 | /* Initialize */ | |
156 | init_IRQ(); | |
157 | env_init(); /* initialize environment */ | |
158 | init_baudrate(); /* initialze baudrate settings */ | |
159 | serial_init(); /* serial communications setup */ | |
160 | console_init_f(); | |
161 | display_banner(); /* say that we are here */ | |
162 | checkboard(); | |
163 | #if defined(CONFIG_RTC_BF533) && (CONFIG_COMMANDS & CFG_CMD_DATE) | |
164 | rtc_init(); | |
165 | #endif | |
166 | timer_init(); | |
167 | printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n", \ | |
168 | CONFIG_VCO_HZ/1000000, CONFIG_CCLK_HZ/1000000, CONFIG_SCLK_HZ/1000000); | |
169 | printf("SDRAM: "); | |
170 | print_size(initdram(0), "\n"); | |
171 | board_init_r((gd_t *) gd, 0x20000010); | |
172 | } | |
173 | ||
174 | void board_init_r(gd_t * id, ulong dest_addr) | |
175 | { | |
176 | DECLARE_GLOBAL_DATA_PTR; | |
177 | ulong size; | |
178 | extern void malloc_bin_reloc(void); | |
179 | char *s, *e; | |
180 | bd_t *bd; | |
181 | int i; | |
182 | gd = id; | |
183 | gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ | |
184 | bd = gd->bd; | |
185 | ||
186 | #if CONFIG_STAMP | |
187 | /* There are some other pointer constants we must deal with */ | |
188 | /* configure available FLASH banks */ | |
189 | size = flash_init(); | |
190 | display_flash_config(size); | |
191 | flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE, CFG_FLASH_BASE + 0x1ffff, &flash_info[0]); | |
192 | bd->bi_flashstart = CFG_FLASH_BASE; | |
193 | bd->bi_flashsize = size; | |
194 | bd->bi_flashoffset = 0; | |
195 | #else | |
196 | bd->bi_flashstart = 0; | |
197 | bd->bi_flashsize = 0; | |
198 | bd->bi_flashoffset = 0; | |
199 | #endif | |
200 | /* initialize malloc() area */ | |
201 | mem_malloc_init(); | |
202 | malloc_bin_reloc(); | |
203 | ||
204 | /* relocate environment function pointers etc. */ | |
205 | env_relocate(); | |
206 | ||
207 | /* board MAC address */ | |
208 | s = getenv("ethaddr"); | |
209 | for (i = 0; i < 6; ++i) { | |
210 | bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0; | |
211 | if (s) | |
212 | s = (*e) ? e + 1 : e; | |
213 | } | |
214 | ||
215 | /* IP Address */ | |
216 | bd->bi_ip_addr = getenv_IPaddr("ipaddr"); | |
217 | ||
218 | /* Initialize devices */ | |
219 | devices_init(); | |
220 | jumptable_init(); | |
221 | ||
222 | /* Initialize the console (after the relocation and devices init) */ | |
223 | console_init_r(); | |
224 | ||
225 | /* Initialize from environment */ | |
226 | if ((s = getenv("loadaddr")) != NULL) { | |
227 | load_addr = simple_strtoul(s, NULL, 16); | |
228 | } | |
229 | #if (CONFIG_COMMANDS & CFG_CMD_NET) | |
230 | if ((s = getenv("bootfile")) != NULL) { | |
231 | copy_filename(BootFile, s, sizeof(BootFile)); | |
232 | } | |
233 | #endif | |
234 | #if defined(CONFIG_MISC_INIT_R) | |
235 | /* miscellaneous platform dependent initialisations */ | |
236 | misc_init_r(); | |
237 | #endif | |
238 | ||
239 | #ifdef CONFIG_DRIVER_SMC91111 | |
240 | #ifdef SHARED_RESOURCES | |
241 | /* Switch to Ethernet */ | |
242 | swap_to(ETHERNET); | |
243 | #endif | |
244 | if ( (SMC_inw(BANK_SELECT) & UPPER_BYTE_MASK) != SMC_IDENT ) { | |
245 | printf("ERROR: Can't find SMC91111 at address %x\n", SMC_BASE_ADDRESS); | |
246 | } else { | |
247 | printf("Net: SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS); | |
248 | } | |
249 | ||
250 | #ifdef SHARED_RESOURCES | |
251 | swap_to(FLASH); | |
252 | #endif | |
253 | #endif | |
254 | #ifdef CONFIG_SOFT_I2C | |
255 | init_func_i2c(); | |
256 | #endif | |
257 | ||
258 | #ifdef DEBUG | |
259 | display_global_data(void); | |
260 | #endif | |
261 | ||
262 | /* main_loop() can return to retry autoboot, if so just run it again. */ | |
263 | for (;;) { | |
264 | main_loop(); | |
265 | } | |
266 | } | |
267 | ||
268 | #ifdef CONFIG_SOFT_I2C | |
269 | static int init_func_i2c (void) | |
270 | { | |
271 | puts ("I2C: "); | |
272 | i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); | |
273 | puts ("ready\n"); | |
274 | return (0); | |
275 | } | |
276 | #endif | |
277 | ||
278 | void hang(void) | |
279 | { | |
280 | puts("### ERROR ### Please RESET the board ###\n"); | |
281 | for (;;); | |
282 | } |