diff options
Diffstat (limited to 'u-boot/board/dave/PPChameleonEVB/flash.c')
| -rw-r--r-- | u-boot/board/dave/PPChameleonEVB/flash.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/u-boot/board/dave/PPChameleonEVB/flash.c b/u-boot/board/dave/PPChameleonEVB/flash.c new file mode 100644 index 0000000..2e1a9ab --- /dev/null +++ b/u-boot/board/dave/PPChameleonEVB/flash.c @@ -0,0 +1,114 @@ +/* + * (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 <asm/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) +{ +#ifdef __DEBUG_START_FROM_SRAM__ + return CONFIG_SYS_DUMMY_FLASH_SIZE; +#else + unsigned long size; + int i; + uint pbcr; + unsigned long base; + int size_val = 0; + + debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__); + debug("[%s, %d] flash_info = 0x%08X ...\n", __FUNCTION__, __LINE__, flash_info); + + /* 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 */ + + debug("[%s, %d] Calling flash_get_size ...\n", __FUNCTION__, __LINE__); + size = 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, size<<20); + } + + debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__); + + /* Setup offsets */ + flash_get_offsets (-size, &flash_info[0]); + debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__); + + /* Re-do sizing to get full correct info */ + mtdcr(EBC0_CFGADDR, PB0CR); + pbcr = mfdcr(EBC0_CFGDATA); + mtdcr(EBC0_CFGADDR, PB0CR); + base = -size; + switch (size) { + 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 | (size_val << 17); + mtdcr(EBC0_CFGDATA, pbcr); + debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__); + + /* Monitor protection ON by default */ + (void)flash_protect(FLAG_PROTECT_SET, + -CONFIG_SYS_MONITOR_LEN, + 0xffffffff, + &flash_info[0]); + + debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__); + flash_info[0].size = size; + + return (size); +#endif +} |