2 * U-boot - stamp.c STAMP board specific routines
4 * Copyright (c) 2005 blackfin.uclinux.org
6 * (C) Copyright 2000-2004
7 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
9 * See file CREDITS for list of people who contributed to this
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.
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.
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,
29 #include <asm/mem_init.h>
32 #define STATUS_LED_OFF 0
33 #define STATUS_LED_ON 1
35 #ifdef CONFIG_SHOW_BOOT_PROGRESS
36 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
38 # define SHOW_BOOT_PROGRESS(arg)
43 printf("CPU: ADSP BF533 Rev.: 0.%d\n", *pCHIPID >> 28);
44 printf("Board: ADI BF533 Stamp board\n");
45 printf(" Support: http://blackfin.uclinux.org/\n");
46 printf(" Richard Klingler <richard@uclinux.net>\n");
50 long int initdram(int board_type)
52 DECLARE_GLOBAL_DATA_PTR;
54 printf("SDRAM attributes:\n");
55 printf(" tRCD:%d Cycles; tRP:%d Cycles; tRAS:%d Cycles; tWR:%d Cycles; "
56 "CAS Latency:%d cycles\n", (SDRAM_tRCD >> 15), (SDRAM_tRP >> 11),
57 (SDRAM_tRAS >> 6), ( SDRAM_tWR >> 19), (SDRAM_CL >> 2 ));
58 printf("SDRAM Begin: 0x%x\n", CFG_SDRAM_BASE);
59 printf("Bank size = %d MB\n", 128);
61 gd->bd->bi_memstart = CFG_SDRAM_BASE;
62 gd->bd->bi_memsize = CFG_MAX_RAM_SIZE;
63 return (gd->bd->bi_memsize);
66 void swap_to(int device_id)
69 if (device_id == ETHERNET)
76 else if (device_id == FLASH)
78 *pFIO_DIR = (PF4 | PF3 | PF2 | PF1 | PF0);
79 *pFIO_FLAG_S = (PF4 | PF3 | PF2 );
80 *pFIO_MASKA_D = (PF8 | PF6 | PF5);
81 *pFIO_MASKB_D = (PF7);
82 *pFIO_POLAR = (PF8 | PF6 | PF5 );
83 *pFIO_EDGE = (PF8 | PF7 | PF6 | PF5);
84 *pFIO_INEN = (PF8 | PF7 | PF6 | PF5);
85 *pFIO_FLAG_D = (PF4 | PF3 | PF2 );
89 printf("Unknown bank to switch\n");
95 #if defined(CONFIG_MISC_INIT_R)
96 /* miscellaneous platform dependent initialisations */
102 /* Check whether CF card is inserted */
103 *pFIO_EDGE = FIO_EDGE_CF_BITS;
104 *pFIO_POLAR = FIO_POLAR_CF_BITS;
105 for (i=0; i < 0x300 ; i++) asm("nop;");
107 if ( (*pFIO_FLAG_S) & CF_STAT_BITS)
116 *pFIO_EDGE = FIO_EDGE_BITS;
117 *pFIO_POLAR = FIO_POLAR_BITS;
122 printf ("Booting from COMPACT flash\n");
124 /* Set cycle time for CF */
125 *(volatile unsigned long *) ambctl1 = CF_AMBCTL1VAL;
127 for (i=0; i < 0x1000 ; i++) asm("nop;");
128 for (i=0; i < 0x1000 ; i++) asm("nop;");
129 for (i=0; i < 0x1000 ; i++) asm("nop;");
134 setenv ("bootargs", "");
135 setenv ("bootcmd", "fatload ide 0:1 0x1000000 uImage-stamp;bootm 0x1000000;bootm 0x20100000" );
139 printf ("Booting from FLASH\n");
146 #ifdef CONFIG_STAMP_CF
148 void cf_outb(unsigned char val, volatile unsigned char* addr)
151 * Set PF1 PF0 respectively to 0 1 to divert address
152 * to the expansion memory banks
154 *pFIO_FLAG_S = CF_PF0;
155 *pFIO_FLAG_C = CF_PF1;
161 /* Setback PF1 PF0 to 0 0 to address external
163 *(volatile unsigned short *) pFIO_FLAG_C = CF_PF1_PF0;
167 unsigned char cf_inb(volatile unsigned char *addr)
169 volatile unsigned char c;
171 *pFIO_FLAG_S = CF_PF0;
172 *pFIO_FLAG_C = CF_PF1;
178 *pFIO_FLAG_C = CF_PF1_PF0;
184 void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
188 *pFIO_FLAG_S = CF_PF0;
189 *pFIO_FLAG_C = CF_PF1;
192 for (i = 0;i < words; i++)
194 *(sect_buf + i) = *(addr);
198 *pFIO_FLAG_C = CF_PF1_PF0;
202 void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
206 *pFIO_FLAG_S = CF_PF0;
207 *pFIO_FLAG_C = CF_PF1;
210 for (i = 0;i < words; i++)
212 *(addr) = *(sect_buf + i);
216 *pFIO_FLAG_C = CF_PF1_PF0;
221 void stamp_led_set(int LED1, int LED2, int LED3)
223 *pFIO_INEN &= ~( PF2 | PF3 | PF4);
224 *pFIO_DIR |= ( PF2 | PF3 | PF4);
226 if(LED1 == STATUS_LED_OFF)
230 if(LED2 == STATUS_LED_OFF)
234 if(LED3 == STATUS_LED_OFF)
241 void show_boot_progress(int status)
245 stamp_led_set(STATUS_LED_OFF,STATUS_LED_OFF,STATUS_LED_ON);
248 stamp_led_set(STATUS_LED_OFF,STATUS_LED_ON,STATUS_LED_OFF);
251 stamp_led_set(STATUS_LED_OFF,STATUS_LED_ON,STATUS_LED_ON);
254 stamp_led_set(STATUS_LED_ON,STATUS_LED_OFF,STATUS_LED_OFF);
258 stamp_led_set(STATUS_LED_ON,STATUS_LED_OFF,STATUS_LED_ON);
262 stamp_led_set(STATUS_LED_ON,STATUS_LED_ON,STATUS_LED_OFF);
271 stamp_led_set(STATUS_LED_OFF,STATUS_LED_OFF,STATUS_LED_OFF);
274 stamp_led_set(STATUS_LED_ON,STATUS_LED_ON,STATUS_LED_ON);