diff options
Diffstat (limited to 'board/adderII/flash.c')
| -rw-r--r-- | board/adderII/flash.c | 501 |
1 files changed, 0 insertions, 501 deletions
diff --git a/board/adderII/flash.c b/board/adderII/flash.c deleted file mode 100644 index 77ab4f1..0000000 --- a/board/adderII/flash.c +++ /dev/null @@ -1,501 +0,0 @@ -/* - * (C) Copyright 2000-2003 - * 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 - */ -/****************************************************************************** -** Notes: AM29LV320DB - 90EI ( 32 Mbit device ) -** Sectors - Eight 8 Kb sector -** - Sixty three 64 Kb sector -** Bottom boot sector -******************************************************************************/ -#include <common.h> -#include <mpc8xx.h> - - -/****************************************************************************** -** Defines -******************************************************************************/ -#ifdef CONFIG_ADDERII - -#define ADDR0 0x0555 -#define ADDR1 0x02AA -#define FLASH_WORD_SIZE unsigned short - -#endif - -#if defined( CFG_ENV_IS_IN_FLASH ) -# ifndef CFG_ENV_ADDR -# define CFG_ENV_ADDR ( CFG_FLASH_BASE + CFG_ENV_OFFSET ) -# endif -# ifndef CFG_ENV_SIZE -# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE -# endif -# ifndef CFG_ENV_SECT_SIZE -# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE -# endif -#endif - -/****************************************************************************** -** Global Parameters -******************************************************************************/ -flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; - -/****************************************************************************** -** Function Prototypes -******************************************************************************/ -static ulong flash_get_size( vu_long *addr, flash_info_t *info ); - -static int write_word( flash_info_t *info, ulong dest, ulong data ); - -static void flash_get_offsets( ulong base, flash_info_t *info ); - -int wait_for_DQ7( flash_info_t *info, int sect ); - -/****************************************************************************** -** Function : flash_init -** Param : void -** Notes : Initializes the Flash Chip -******************************************************************************/ -ulong flash_init (void) -{ - ulong size_b0 = -1; - int i; - volatile immap_t *immap = (immap_t *) CFG_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - - /* Set Flash to unknown */ - for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { - flash_info[i].flash_id = FLASH_UNKNOWN; - } - - /* Get the Flash Bank Size */ - - size_b0 = flash_get_size ((vu_long *) (CFG_FLASH_BASE), - &flash_info[0]); - - if (flash_info[0].flash_id == FLASH_UNKNOWN) { - printf ("## UNKNOWN Flash on Bank 0 - Size = 0x%08lx = %ldMB\n", - size_b0, size_b0 >> 20); - } - - /* Remap Flash according to size detected */ - memctl->memc_or0 = 0xFF800774; - memctl->memc_br0 = CFG_BR0_PRELIM; - - /* Setup Flash Sector Offsets */ - - flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]); - - /* Monitor Protection ON - default */ - -#if ( CFG_MONITOR_BASE >= CFG_FLASH_BASE ) - flash_protect (FLAG_PROTECT_SET, CFG_MONITOR_BASE, - (CFG_MONITOR_BASE + monitor_flash_len - 1), - &flash_info[0]); -#endif - - /* Protect Environment Variables */ -#ifdef CFG_ENV_IS_IN_FLASH - flash_protect (FLAG_PROTECT_SET, CFG_ENV_ADDR, - (CFG_ENV_ADDR + CFG_ENV_SIZE - 1), &flash_info[0]); -#endif - - return size_b0; -} - -/****************************************************************************** -** Function : flash_get_offsets -** Param : ulong base, flash_into_t *info -** Notes : -******************************************************************************/ -static void flash_get_offsets (ulong base, flash_info_t * info) -{ - return; -} - - -/****************************************************************************** -** Function : flash_print_info -** Param : flash_info_t -** Notes : -******************************************************************************/ -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; - case FLASH_MAN_BM: - printf ("BRIGHT MICRO "); - break; - default: - printf ("Unknown Vendor "); - break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - 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; -} - -/****************************************************************************** -** Function : flash_get_size -** Param : vu_long *addr, flash_info_t *info -** Notes : -******************************************************************************/ -static ulong flash_get_size (vu_long * addr, flash_info_t * info) -{ - short i; - FLASH_WORD_SIZE manu_id, dev_id; - ulong base = (ulong) addr; - volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) addr; - - /* Write Auto Select Command and read Manufacturer's ID and Dev ID */ - - addr2[ADDR0] = (FLASH_WORD_SIZE) 0xAAAAAAAA; - addr2[ADDR1] = (FLASH_WORD_SIZE) 0x55555555; - addr2[ADDR0] = (FLASH_WORD_SIZE) 0x90909090; - - manu_id = addr2[0]; - - switch (manu_id) { - case (FLASH_WORD_SIZE) AMD_MANUFACT: - info->flash_id = FLASH_MAN_AMD; - break; - - default: - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - break; - } - - /* Read Device Id */ - dev_id = addr2[1]; - - switch (dev_id) { - case (FLASH_WORD_SIZE) AMD_ID_LV320B: - info->flash_id += FLASH_AM320B; - info->sector_count = 71; /* 8 - boot sec + 63 normal */ - info->size = 0x400000; /* 4MByte */ - break; - - default: - info->flash_id = FLASH_UNKNOWN; - break; - } - - /* Set up sector start Addresses */ - - if (info->flash_id & FLASH_BTYPE) { - /* set sector offsets for bottom boot block - ** Eight 8 Kb Boot sectors - ** Sixty Three 64Kb sectors - */ - for (i = 0; i < 8; i++) { - info->start[i] = base + (i * 0x00002000); - } - for (i = 8; i < info->sector_count; i++) { - info->start[i] = base + (i * 0x00010000) - 0x00070000; - } - } - - /* Reset To read mode */ - - if (info->flash_id != FLASH_UNKNOWN) { - addr = (ulong *) info->start[0]; - *addr = 0xF0F0F0F0; - } - return (info->size); -} - -/******************************************************************************* -** Function : flash_erase -** Param : flash_info_t *info, int s_first, int s_last -** Notes : -******************************************************************************/ -int flash_erase (flash_info_t * info, int s_first, int s_last) -{ - volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]); - volatile FLASH_WORD_SIZE *addr2; - int flag, prot, sect, l_sect; - int i; - - 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; - } - - if (info->flash_id == FLASH_UNKNOWN) { - printf ("Can't erase unknown flash type - aborted\n"); - return 1; - } - - 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"); - } - - l_sect = -1; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts (); - - /* Start erase on unprotected sectors */ - for (sect = s_first; sect <= s_last; sect++) { - - if (info->protect[sect] == 0) { /* not protected */ - addr2 = (FLASH_WORD_SIZE *) (info->start[sect]); - - if ((info->flash_id & FLASH_VENDMASK) == - FLASH_MAN_SST) { - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080; - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - addr2[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */ - for (i = 0; i < 50; i++) - udelay (1000); /* wait 1 ms */ - } else { - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080; - addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - addr2[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */ - } - l_sect = sect; - /* - * Wait for each sector to complete, it's more - * reliable. According to AMD Spec, you must - * issue all erase commands within a specified - * timeout. This has been seen to fail, especially - * if printf()s are included (for debug)!! - */ - wait_for_DQ7 (info, sect); - } - } - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts (); - - /* wait at least 80us - let's wait 1 ms */ - udelay (1000); - - /* reset to read mode */ - addr = (FLASH_WORD_SIZE *) info->start[0]; - addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ - - printf (" done\n"); - return 0; -} - -int wait_for_DQ7 (flash_info_t * info, int sect) -{ - ulong start, now, last; - volatile FLASH_WORD_SIZE *addr = - (FLASH_WORD_SIZE *) (info->start[sect]); - - start = get_timer (0); - last = start; - while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) != - (FLASH_WORD_SIZE) 0x00800080) { - if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) { - printf ("Timeout\n"); - return -1; - } - /* show that we're waiting */ - if ((now - last) > 1000) { - putc ('.'); - last = now; - } - } - return 0; -} - - -/****************************************************************************** -** Function : write_buff -** Param : flash_info_t *info, uchar *src, ulong addr, ulong cnt -** Notes : -******************************************************************************/ -int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) -{ - ulong cp, wp, data; - int i, l, rc; - - /* get lower word aligned address */ - wp = (addr & ~3); - - /* - * 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)); -} - - -/****************************************************************************** -** Function : write_word -** Param : flash_info_t *info, ulong dest, ulong data -** Notes : -******************************************************************************/ -static int write_word (flash_info_t * info, ulong dest, ulong data) -{ - volatile FLASH_WORD_SIZE *addr2 = - (FLASH_WORD_SIZE *) (info->start[0]); - volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest; - volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data; - ulong start; - int i; - - /* Check if Flash is (sufficiently) erased */ - if ((*((volatile FLASH_WORD_SIZE *) dest) & - (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) { - return (2); - } - - for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) { - int flag; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts (); - - addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA; - addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055; - addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0; - - dest2[i] = data2[i]; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts (); - - /* data polling for D7 */ - start = get_timer (0); - while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) != - (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) { - if (get_timer (start) > CFG_FLASH_WRITE_TOUT) { - return (1); - } - } - } - - return (0); -} |