2 * U-boot - stamp.c STAMP board specific routines
4 * Copyright (c) 2005-2007 Analog Devices Inc.
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., 51 Franklin St, Fifth Floor, Boston,
30 #include "bf533-stamp.h"
32 DECLARE_GLOBAL_DATA_PTR;
34 #define STATUS_LED_OFF 0
35 #define STATUS_LED_ON 1
37 #ifdef CONFIG_SHOW_BOOT_PROGRESS
38 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
40 # define SHOW_BOOT_PROGRESS(arg)
45 printf("Board: ADI BF533 Stamp board\n");
46 printf(" Support: http://blackfin.uclinux.org/\n");
50 phys_size_t initdram(int board_type)
52 gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
53 gd->bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE;
54 return gd->bd->bi_memsize;
57 /* PF0 and PF1 are used to switch between the ethernet and flash:
62 void swap_to(int device_id)
64 bfin_write_FIO_DIR(bfin_read_FIO_DIR() | PF1 | PF0);
66 bfin_write_FIO_FLAG_C(PF1);
67 if (device_id == ETHERNET)
68 bfin_write_FIO_FLAG_S(PF0);
69 else if (device_id == FLASH)
70 bfin_write_FIO_FLAG_C(PF0);
72 printf("Unknown device to switch\n");
76 #if defined(CONFIG_MISC_INIT_R)
77 /* miscellaneous platform dependent initialisations */
83 /* Check whether CF card is inserted */
84 *pFIO_EDGE = FIO_EDGE_CF_BITS;
85 *pFIO_POLAR = FIO_POLAR_CF_BITS;
86 for (i = 0; i < 0x300; i++)
89 if ((*pFIO_FLAG_S) & CF_STAT_BITS) {
95 *pFIO_EDGE = FIO_EDGE_BITS;
96 *pFIO_POLAR = FIO_POLAR_BITS;
99 printf("Booting from COMPACT flash\n");
101 for (i = 0; i < 0x1000; i++)
103 for (i = 0; i < 0x1000; i++)
105 for (i = 0; i < 0x1000; i++)
111 setenv("bootargs", "");
113 "fatload ide 0:1 0x1000000 uImage-stamp;bootm 0x1000000;bootm 0x20100000");
115 printf("Booting from FLASH\n");
122 #ifdef CONFIG_STAMP_CF
124 void cf_outb(unsigned char val, volatile unsigned char *addr)
127 * Set PF1 PF0 respectively to 0 1 to divert address
128 * to the expansion memory banks
130 *pFIO_FLAG_S = CF_PF0;
131 *pFIO_FLAG_C = CF_PF1;
137 /* Setback PF1 PF0 to 0 0 to address external
139 *(volatile unsigned short *)pFIO_FLAG_C = CF_PF1_PF0;
143 unsigned char cf_inb(volatile unsigned char *addr)
145 volatile unsigned char c;
147 *pFIO_FLAG_S = CF_PF0;
148 *pFIO_FLAG_C = CF_PF1;
154 *pFIO_FLAG_C = CF_PF1_PF0;
160 void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
164 *pFIO_FLAG_S = CF_PF0;
165 *pFIO_FLAG_C = CF_PF1;
168 for (i = 0; i < words; i++) {
169 *(sect_buf + i) = *(addr);
173 *pFIO_FLAG_C = CF_PF1_PF0;
177 void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
181 *pFIO_FLAG_S = CF_PF0;
182 *pFIO_FLAG_C = CF_PF1;
185 for (i = 0; i < words; i++) {
186 *(addr) = *(sect_buf + i);
190 *pFIO_FLAG_C = CF_PF1_PF0;
195 void stamp_led_set(int LED1, int LED2, int LED3)
197 *pFIO_INEN &= ~(PF2 | PF3 | PF4);
198 *pFIO_DIR |= (PF2 | PF3 | PF4);
200 if (LED1 == STATUS_LED_OFF)
204 if (LED2 == STATUS_LED_OFF)
208 if (LED3 == STATUS_LED_OFF)
215 void show_boot_progress(int status)
219 stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_ON);
222 stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_OFF);
225 stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_ON);
228 stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_OFF);
232 stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_ON);
236 stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_OFF);
245 stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_OFF);
248 stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_ON);