| /* |
| * (C) Copyright 2002 |
| * 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 32 /* 00100000 */ |
| #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 |
| |
| static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = { |
| {0xffc00000, 0xffe00000, 0xff880000}, /* 0:000: configuraton 3 */ |
| {0xffc00000, 0xffe00000, 0xff800000}, /* 1:001: configuraton 4 */ |
| {0xffc00000, 0xffe00000, 0x00000000}, /* 2:010: configuraton 7 */ |
| {0xffc00000, 0xffe00000, 0x00000000}, /* 3:011: configuraton 8 */ |
| {0xff800000, 0xffa00000, 0xfff80000}, /* 4:100: configuraton 1 */ |
| {0xff800000, 0xffa00000, 0xfff00000}, /* 5:101: configuraton 2 */ |
| {0xffc00000, 0xffe00000, 0x00000000}, /* 6:110: configuraton 5 */ |
| {0xffc00000, 0xffe00000, 0x00000000} /* 7:111: configuraton 6 */ |
| }; |
| |
| /* |
| * include common flash code (for amcc boards) |
| */ |
| #include "../common/flash.c" |
| |
| /*----------------------------------------------------------------------- |
| * Functions |
| */ |
| static ulong flash_get_size(vu_long * addr, flash_info_t * info); |
| |
| 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[2]); |
| #ifdef CONFIG_ENV_IS_IN_FLASH |
| (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, |
| CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1, |
| &flash_info[2]); |
| (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND, |
| CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1, |
| &flash_info[2]); |
| #endif |
| |
| total_b += flash_info[i].size; |
| } |
| |
| return total_b; |
| } |