/* * (C) Copyright 2004-2005 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2002 Jun Gu <jung@artesyncp.com> * Add support for Am29F016D and dynamic switch setting. * * 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., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ /* * Modified 4/5/2001 * Wait for completion of each sector erase command issued * 4/5/2001 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com */ #include <common.h> #include <ppc4xx.h> #include <asm/processor.h> #undef DEBUG #ifdef DEBUG #define DEBUGF(x...) printf(x) #else #define DEBUGF(x...) #endif /* DEBUG */ #define BOOT_SMALL_FLASH 0x40 /* 01000000 */ #define FLASH_ONBD_N 2 /* 00000010 */ #define FLASH_SRAM_SEL 1 /* 00000001 */ #define FLASH_ONBD_N 2 /* 00000010 */ #define FLASH_SRAM_SEL 1 /* 00000001 */ #define BOOT_SMALL_FLASH_VAL 4 #define FLASH_ONBD_N_VAL 2 #define FLASH_SRAM_SEL_VAL 1 flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = { {0xFF800000, 0xFF880000, 0xFFC00000}, /* 0:000: configuraton 4 */ {0xFF900000, 0xFF980000, 0xFFC00000}, /* 1:001: configuraton 3 */ {0x00000000, 0x00000000, 0x00000000}, /* 2:010: configuraton 8 */ {0x00000000, 0x00000000, 0x00000000}, /* 3:011: configuraton 7 */ {0xFFE00000, 0xFFF00000, 0xFF800000}, /* 4:100: configuraton 2 */ {0xFFF00000, 0xFFF80000, 0xFF800000}, /* 5:101: configuraton 1 */ {0x00000000, 0x00000000, 0x00000000}, /* 6:110: configuraton 6 */ {0x00000000, 0x00000000, 0x00000000} /* 7:111: configuraton 5 */ }; /* * include common flash code (for amcc boards) */ #include "../common/flash.c" /*----------------------------------------------------------------------- * Functions */ static ulong flash_get_size(vu_long * addr, flash_info_t * info); static int write_word(flash_info_t * info, ulong dest, ulong data); /*----------------------------------------------------------------------- */ unsigned long flash_init(void) { unsigned long total_b = 0; unsigned long size_b[CFG_MAX_FLASH_BANKS]; unsigned char *fpga_base = (unsigned char *)CFG_FPGA_BASE; unsigned char switch_status; unsigned short index = 0; int i; /* read FPGA base register FPGA_REG0 */ switch_status = *fpga_base; /* check the bitmap of switch status */ if (switch_status & BOOT_SMALL_FLASH) { index += BOOT_SMALL_FLASH_VAL; } if (switch_status & FLASH_ONBD_N) { index += FLASH_ONBD_N_VAL; } if (switch_status & FLASH_SRAM_SEL) { index += FLASH_SRAM_SEL_VAL; } DEBUGF("\n"); DEBUGF("FLASH: Index: %d\n", index); /* Init: no FLASHes known */ for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; flash_info[i].sector_count = -1; flash_info[i].size = 0; /* check whether the address is 0 */ if (flash_addr_table[index][i] == 0) { continue; } /* call flash_get_size() to initialize sector address */ size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i], &flash_info[i]); flash_info[i].size = size_b[i]; if (flash_info[i].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", i, size_b[i], size_b[i] << 20); flash_info[i].sector_count = -1; flash_info[i].size = 0; } /* Monitor protection ON by default */ (void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE, CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1, &flash_info[i]); #ifdef CFG_ENV_IS_IN_FLASH (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1, &flash_info[i]); (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND, CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1, &flash_info[i]); #endif total_b += flash_info[i].size; } return total_b; }