diff options
Diffstat (limited to 'board/kup4k/flash.c')
| -rw-r--r-- | board/kup4k/flash.c | 515 |
1 files changed, 0 insertions, 515 deletions
diff --git a/board/kup4k/flash.c b/board/kup4k/flash.c deleted file mode 100644 index 619ccb9..0000000 --- a/board/kup4k/flash.c +++ /dev/null @@ -1,515 +0,0 @@ -/* - * (C) Copyright 2000-2002 - * 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., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <common.h> -#include <mpc8xx.h> - -#ifndef CFG_ENV_ADDR -#define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET) -#endif - -#define CONFIG_FLASH_16BIT - -flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ - -/*----------------------------------------------------------------------- - * 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) -{ - volatile immap_t *immap = (immap_t *)CFG_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - unsigned long size_b0; - int i; - - /* Init: no FLASHes known */ - for (i=0; i<CFG_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); - } - - - /* Remap FLASH according to real size */ - memctl->memc_or0 = CFG_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK); - memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V | BR_PS_16; - - /* Re-do sizing to get full correct info */ - size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]); - -#if CFG_MONITOR_BASE >= CFG_FLASH_BASE - /* monitor protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - CFG_MONITOR_BASE, - CFG_MONITOR_BASE+monitor_flash_len-1, - &flash_info[0]); -#endif - -#ifdef CFG_ENV_IS_IN_FLASH - /* ENV protection ON by default */ - flash_protect(FLAG_PROTECT_SET, - CFG_ENV_ADDR, - CFG_ENV_ADDR+CFG_ENV_SIZE-1, - &flash_info[0]); -#endif - - flash_info[0].size = size_b0; - - return (size_b0); -} - -/*----------------------------------------------------------------------- - */ -void flash_print_info (flash_info_t *info) -{ - int i; - - if (info->flash_id == FLASH_UNKNOWN) { - printf ("missing or unknown FLASH type\n"); - return; - } - - switch (info->flash_id & FLASH_VENDMASK) { - case FLASH_MAN_AMD: printf ("AMD "); break; - case FLASH_MAN_FUJ: printf ("FUJITSU "); break; - default: printf ("Unknown Vendor "); break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); - break; - case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); - break; - case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); - break; - case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); - break; - case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); - break; - case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); - break; - case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); - break; - case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); - break; - default: printf ("Unknown Chip Type\n"); - break; - } - - printf (" Size: %ld MB in %d Sectors\n", - info->size >> 20, info->sector_count); - - printf (" Sector Start Addresses:"); - for (i=0; i<info->sector_count; ++i) { - if ((i % 5) == 0) - printf ("\n "); - printf (" %08lX%s", - info->start[i], - info->protect[i] ? " (RO)" : " " - ); - } - printf ("\n"); - return; -} - -/*----------------------------------------------------------------------- - */ - - -/*----------------------------------------------------------------------- - */ - -/* - * The following code cannot be run from FLASH! - */ - -static ulong flash_get_size (vu_long *addr, flash_info_t *info) -{ - short i; - ulong value; - ulong base = (ulong)addr; - - /* Write auto select command: read Manufacturer ID */ - vu_short *s_addr=(vu_short*)addr; - s_addr[0x5555] = 0x00AA; - s_addr[0x2AAA] = 0x0055; - s_addr[0x5555] = 0x0090; - - value = s_addr[0]; - value = value|(value<<16); - - switch (value) { - case AMD_MANUFACT: - info->flash_id = FLASH_MAN_AMD; - break; - case FUJ_MANUFACT: - info->flash_id = FLASH_MAN_FUJ; - break; - default: - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - return (0); /* no or unknown flash */ - } - - value = s_addr[1]; - value = value|(value<<16); - - switch (value) { - case FUJI_ID_29F800BA: - info->flash_id += FLASH_AM400T; - info->sector_count = 19; - info->size = 0x00100000; - break; /* => 1 MB */ - case AMD_ID_LV800T: - info->flash_id += FLASH_AM800T; - info->sector_count = 19; - info->size = 0x00200000; - break; /* => 2 MB */ - case AMD_ID_LV800B: - info->flash_id += FLASH_AM800B; - info->sector_count = 19; - info->size = 0x00200000; - break; /* => 2 MB */ - default: - info->flash_id = FLASH_UNKNOWN; - return (0); /* => no or unknown flash */ - } - - /* set up sector start address table */ - /* set sector offsets for bottom boot block type */ - info->start[0] = base + 0x00000000; - info->start[1] = base + 0x00004000; - info->start[2] = base + 0x00006000; - info->start[3] = base + 0x00008000; - for (i = 4; i < info->sector_count; i++) { - info->start[i] = base + (i * 0x00010000) - 0x00030000; - } - - - /* check for protected sectors */ - for (i = 0; i < info->sector_count; i++) { - /* read sector protection at sector address, (A7 .. A0) = 0x02 */ - /* D0 = 1 if protected */ - s_addr = (volatile unsigned short *)(info->start[i]); - info->protect[i] = s_addr[2] & 1; - } - - /* - * Prevent writes to uninitialized FLASH. - */ - if (info->flash_id != FLASH_UNKNOWN) { - s_addr = (volatile unsigned short *)info->start[0]; - *s_addr = 0x00F0; /* reset bank */ - } - return (info->size); -} - - -/*----------------------------------------------------------------------- - */ - - -int flash_erase (flash_info_t *info, int s_first, int s_last) -{ - vu_long *addr = (vu_long*)(info->start[0]); - int flag, prot, sect; - ulong start, now, last; -#ifdef CONFIG_FLASH_16BIT - vu_short *s_addr = (vu_short*)addr; -#endif - - if ((s_first < 0) || (s_first > s_last)) { - if (info->flash_id == FLASH_UNKNOWN) { - printf ("- missing\n"); - } else { - printf ("- no sectors to erase\n"); - } - return 1; - } -/*#ifndef CONFIG_FLASH_16BIT - ulong type; - type = (info->flash_id & FLASH_VENDMASK); - if ((type != FLASH_MAN_SST) && (type != FLASH_MAN_STM)) { - printf ("Can't erase unknown flash type %08lx - aborted\n", - info->flash_id); - return; - } -#endif*/ - prot = 0; - for (sect=s_first; sect<=s_last; ++sect) { - if (info->protect[sect]) { - prot++; - } - } - - if (prot) { - printf ("- Warning: %d protected sectors will not be erased!\n", - prot); - } else { - printf ("\n"); - } - - start = get_timer (0); - last = start; - /* Start erase on unprotected sectors */ - for (sect = s_first; sect<=s_last; sect++) { - if (info->protect[sect] == 0) { /* not protected */ -#ifdef CONFIG_FLASH_16BIT - vu_short *s_sect_addr = (vu_short*)(info->start[sect]); -#else - vu_long *sect_addr = (vu_long*)(info->start[sect]); -#endif - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - -#ifdef CONFIG_FLASH_16BIT - - /*printf("\ns_sect_addr=%x",s_sect_addr);*/ - s_addr[0x5555] = 0x00AA; - s_addr[0x2AAA] = 0x0055; - s_addr[0x5555] = 0x0080; - s_addr[0x5555] = 0x00AA; - s_addr[0x2AAA] = 0x0055; - s_sect_addr[0] = 0x0030; -#else - addr[0x5555] = 0x00AA00AA; - addr[0x2AAA] = 0x00550055; - addr[0x5555] = 0x00800080; - addr[0x5555] = 0x00AA00AA; - addr[0x2AAA] = 0x00550055; - sect_addr[0] = 0x00300030; -#endif - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* wait at least 80us - let's wait 1 ms */ - udelay (1000); - -#ifdef CONFIG_FLASH_16BIT - while ((s_sect_addr[0] & 0x0080) != 0x0080) { -#else - while ((sect_addr[0] & 0x00800080) != 0x00800080) { -#endif - if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - return 1; - } - /* show that we're waiting */ - if ((now - last) > 1000) { /* every second */ - putc ('.'); - last = now; - } - } - } - } - - /* reset to read mode */ - addr = (volatile unsigned long *)info->start[0]; -#ifdef CONFIG_FLASH_16BIT - s_addr[0] = 0x00F0; /* reset bank */ -#else - addr[0] = 0x00F000F0; /* reset bank */ -#endif - - printf (" done\n"); - return 0; -} - - -/*----------------------------------------------------------------------- - * Copy memory to flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ - -int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) -{ - ulong cp, wp, data; - int i, l, rc; - - wp = (addr & ~3); /* get lower word aligned address */ - - /* - * handle unaligned start bytes - */ - if ((l = addr - wp) != 0) { - data = 0; - for (i=0, cp=wp; i<l; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - for (; i<4 && cnt>0; ++i) { - data = (data << 8) | *src++; - --cnt; - ++cp; - } - for (; cnt==0 && i<4; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - - if ((rc = write_word(info, wp, data)) != 0) { - return (rc); - } - wp += 4; - } - - /* - * handle word aligned part - */ - while (cnt >= 4) { - data = 0; - for (i=0; i<4; ++i) { - data = (data << 8) | *src++; - } - if ((rc = write_word(info, wp, data)) != 0) { - return (rc); - } - wp += 4; - cnt -= 4; - } - - if (cnt == 0) { - return (0); - } - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) { - data = (data << 8) | *src++; - --cnt; - } - for (; i<4; ++i, ++cp) { - data = (data << 8) | (*(uchar *)cp); - } - - return (write_word(info, wp, data)); -} - - -/*----------------------------------------------------------------------- - * Write a word to Flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_word (flash_info_t *info, ulong dest, ulong data) -{ - vu_long *addr = (vu_long*)(info->start[0]); - -#ifdef CONFIG_FLASH_16BIT - vu_short high_data; - vu_short low_data; - vu_short *s_addr = (vu_short*)addr; -#endif - ulong start; - int flag; - - /* Check if Flash is (sufficiently) erased */ - if ((*((vu_long *)dest) & data) != data) { - return (2); - } - -#ifdef CONFIG_FLASH_16BIT - /* Write the 16 higher-bits */ - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - high_data = ((data>>16) & 0x0000ffff); - - s_addr[0x5555] = 0x00AA; - s_addr[0x2AAA] = 0x0055; - s_addr[0x5555] = 0x00A0; - - *((vu_short *)dest) = high_data; - - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* data polling for D7 */ - start = get_timer (0); - while ((*((vu_short *)dest) & 0x0080) != (high_data & 0x0080)) { - if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { - return (1); - } - } - - - /* Write the 16 lower-bits */ -#endif - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); -#ifdef CONFIG_FLASH_16BIT - dest += 0x2; - low_data = (data & 0x0000ffff); - - s_addr[0x5555] = 0x00AA; - s_addr[0x2AAA] = 0x0055; - s_addr[0x5555] = 0x00A0; - *((vu_short *)dest) = low_data; - -#else - addr[0x5555] = 0x00AA00AA; - addr[0x2AAA] = 0x00550055; - addr[0x5555] = 0x00A000A0; - *((vu_long *)dest) = data; -#endif - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* data polling for D7 */ - start = get_timer (0); - -#ifdef CONFIG_FLASH_16BIT - while ((*((vu_short *)dest) & 0x0080) != (low_data & 0x0080)) { -#else - while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) { -#endif - - if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { - return (1); - } - } - return (0); -} |