/* * (C) Copyright 2001 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com * * 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 */ #include <common.h> #include <ppc4xx.h> #include <asm/processor.h> /* * include common flash code (for esd boards) */ #include "../common/flash.c" /*----------------------------------------------------------------------- * Functions */ static ulong flash_get_size (vu_long * addr, flash_info_t * info); static void flash_get_offsets (ulong base, flash_info_t * info); /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { unsigned long size_b0; int i; uint pbcr; unsigned long base_b0; int size_val = 0; /* Init: no FLASHes known */ for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { flash_info[i].flash_id = FLASH_UNKNOWN; } /* Static FLASH Bank configuration here - FIXME XXX */ size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]); if (flash_info[0].flash_id == FLASH_UNKNOWN) { printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", size_b0, size_b0<<20); } /* Setup offsets */ flash_get_offsets (-size_b0, &flash_info[0]); /* Re-do sizing to get full correct info */ mtdcr(EBC0_CFGADDR, PB0CR); pbcr = mfdcr(EBC0_CFGDATA); mtdcr(EBC0_CFGADDR, PB0CR); base_b0 = -size_b0; switch (size_b0) { case 1 << 20: size_val = 0; break; case 2 << 20: size_val = 1; break; case 4 << 20: size_val = 2; break; case 8 << 20: size_val = 3; break; case 16 << 20: size_val = 4; break; } pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17); mtdcr(EBC0_CFGDATA, pbcr); /* Monitor protection ON by default */ (void)flash_protect(FLAG_PROTECT_SET, -CONFIG_SYS_MONITOR_LEN, 0xffffffff, &flash_info[0]); flash_info[0].size = size_b0; return (size_b0); }