/* * U-boot - stamp.c STAMP board specific routines * * Copyright (c) 2005-2007 Analog Devices Inc. * * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, * MA 02110-1301 USA */ #include <common.h> #include <asm/io.h> #include "bf533-stamp.h" DECLARE_GLOBAL_DATA_PTR; #define STATUS_LED_OFF 0 #define STATUS_LED_ON 1 #ifdef CONFIG_SHOW_BOOT_PROGRESS # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) #else # define SHOW_BOOT_PROGRESS(arg) #endif int checkboard(void) { printf("Board: ADI BF533 Stamp board\n"); printf(" Support: http://blackfin.uclinux.org/\n"); return 0; } phys_size_t initdram(int board_type) { #ifdef DEBUG printf("SDRAM attributes:\n"); printf (" tRCD:%d Cycles; tRP:%d Cycles; tRAS:%d Cycles; tWR:%d Cycles; " "CAS Latency:%d cycles\n", (SDRAM_tRCD >> 15), (SDRAM_tRP >> 11), (SDRAM_tRAS >> 6), (SDRAM_tWR >> 19), (SDRAM_CL >> 2)); printf("SDRAM Begin: 0x%x\n", CONFIG_SYS_SDRAM_BASE); printf("Bank size = %d MB\n", 128); #endif gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; gd->bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE; return (gd->bd->bi_memsize); } void swap_to(int device_id) { if (device_id == ETHERNET) { *pFIO_DIR = PF0; SSYNC(); *pFIO_FLAG_S = PF0; SSYNC(); } else if (device_id == FLASH) { *pFIO_DIR = (PF4 | PF3 | PF2 | PF1 | PF0); *pFIO_FLAG_S = (PF4 | PF3 | PF2); *pFIO_MASKA_D = (PF8 | PF6 | PF5); *pFIO_MASKB_D = (PF7); *pFIO_POLAR = (PF8 | PF6 | PF5); *pFIO_EDGE = (PF8 | PF7 | PF6 | PF5); *pFIO_INEN = (PF8 | PF7 | PF6 | PF5); *pFIO_FLAG_D = (PF4 | PF3 | PF2); SSYNC(); } else { printf("Unknown bank to switch\n"); } return; } #if defined(CONFIG_MISC_INIT_R) /* miscellaneous platform dependent initialisations */ int misc_init_r(void) { int i; int cf_stat = 0; /* Check whether CF card is inserted */ *pFIO_EDGE = FIO_EDGE_CF_BITS; *pFIO_POLAR = FIO_POLAR_CF_BITS; for (i = 0; i < 0x300; i++) asm("nop;"); if ((*pFIO_FLAG_S) & CF_STAT_BITS) { cf_stat = 0; } else { cf_stat = 1; } *pFIO_EDGE = FIO_EDGE_BITS; *pFIO_POLAR = FIO_POLAR_BITS; if (cf_stat) { printf("Booting from COMPACT flash\n"); /* Set cycle time for CF */ *(volatile unsigned long *)ambctl1 = CF_AMBCTL1VAL; for (i = 0; i < 0x1000; i++) asm("nop;"); for (i = 0; i < 0x1000; i++) asm("nop;"); for (i = 0; i < 0x1000; i++) asm("nop;"); serial_setbrg(); ide_init(); setenv("bootargs", ""); setenv("bootcmd", "fatload ide 0:1 0x1000000 uImage-stamp;bootm 0x1000000;bootm 0x20100000"); } else { printf("Booting from FLASH\n"); } return 0; } #endif #ifdef CONFIG_STAMP_CF void cf_outb(unsigned char val, volatile unsigned char *addr) { /* * Set PF1 PF0 respectively to 0 1 to divert address * to the expansion memory banks */ *pFIO_FLAG_S = CF_PF0; *pFIO_FLAG_C = CF_PF1; SSYNC(); *(addr) = val; SSYNC(); /* Setback PF1 PF0 to 0 0 to address external * memory banks */ *(volatile unsigned short *)pFIO_FLAG_C = CF_PF1_PF0; SSYNC(); } unsigned char cf_inb(volatile unsigned char *addr) { volatile unsigned char c; *pFIO_FLAG_S = CF_PF0; *pFIO_FLAG_C = CF_PF1; SSYNC(); c = *(addr); SSYNC(); *pFIO_FLAG_C = CF_PF1_PF0; SSYNC(); return c; } void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words) { int i; *pFIO_FLAG_S = CF_PF0; *pFIO_FLAG_C = CF_PF1; SSYNC(); for (i = 0; i < words; i++) { *(sect_buf + i) = *(addr); SSYNC(); } *pFIO_FLAG_C = CF_PF1_PF0; SSYNC(); } void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words) { int i; *pFIO_FLAG_S = CF_PF0; *pFIO_FLAG_C = CF_PF1; SSYNC(); for (i = 0; i < words; i++) { *(addr) = *(sect_buf + i); SSYNC(); } *pFIO_FLAG_C = CF_PF1_PF0; SSYNC(); } #endif void stamp_led_set(int LED1, int LED2, int LED3) { *pFIO_INEN &= ~(PF2 | PF3 | PF4); *pFIO_DIR |= (PF2 | PF3 | PF4); if (LED1 == STATUS_LED_OFF) *pFIO_FLAG_S = PF2; else *pFIO_FLAG_C = PF2; if (LED2 == STATUS_LED_OFF) *pFIO_FLAG_S = PF3; else *pFIO_FLAG_C = PF3; if (LED3 == STATUS_LED_OFF) *pFIO_FLAG_S = PF4; else *pFIO_FLAG_C = PF4; SSYNC(); } void show_boot_progress(int status) { switch (status) { case 1: stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_ON); break; case 2: stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_OFF); break; case 3: stamp_led_set(STATUS_LED_OFF, STATUS_LED_ON, STATUS_LED_ON); break; case 4: stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_OFF); break; case 5: case 6: stamp_led_set(STATUS_LED_ON, STATUS_LED_OFF, STATUS_LED_ON); break; case 7: case 8: stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_OFF); break; case 9: case 10: case 11: case 12: case 13: case 14: case 15: stamp_led_set(STATUS_LED_OFF, STATUS_LED_OFF, STATUS_LED_OFF); break; default: stamp_led_set(STATUS_LED_ON, STATUS_LED_ON, STATUS_LED_ON); break; } }