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Diffstat (limited to 'board/freescale/m5329evb/flash.c')
-rw-r--r-- | board/freescale/m5329evb/flash.c | 643 |
1 files changed, 0 insertions, 643 deletions
diff --git a/board/freescale/m5329evb/flash.c b/board/freescale/m5329evb/flash.c deleted file mode 100644 index 7d3b0e84d22..00000000000 --- a/board/freescale/m5329evb/flash.c +++ /dev/null @@ -1,643 +0,0 @@ -/* - * (C) Copyright 2000-2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. - * TsiChung Liew (Tsi-Chung.Liew@freescale.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> - -#ifndef CFG_FLASH_CFI - -typedef unsigned short FLASH_PORT_WIDTH; -typedef volatile unsigned short FLASH_PORT_WIDTHV; - -#define PHYS_FLASH_1 CFG_FLASH_BASE -#define FLASH_BANK_SIZE 0x200000 - -#define FPW FLASH_PORT_WIDTH -#define FPWV FLASH_PORT_WIDTHV - -/* Intel-compatible flash commands */ -#define INTEL_PROGRAM 0x00100010 -#define INTEL_ERASE 0x00200020 -#define INTEL_WRSETUP 0x00400040 -#define INTEL_CLEAR 0x00500050 -#define INTEL_LOCKBIT 0x00600060 -#define INTEL_PROTECT 0x00010001 -#define INTEL_STATUS 0x00700070 -#define INTEL_READID 0x00900090 -#define INTEL_CFIQRY 0x00980098 -#define INTEL_SUSERASE 0x00B000B0 -#define INTEL_PROTPROG 0x00C000C0 -#define INTEL_CONFIRM 0x00D000D0 -#define INTEL_RESET 0x00FF00FF - -/* Intel-compatible flash status bits */ -#define INTEL_FINISHED 0x00800080 -#define INTEL_OK 0x00800080 -#define INTEL_ERASESUS 0x00600060 -#define INTEL_WSM_SUS (INTEL_FINISHED | INTEL_ERASESUS) - -/* 28F160C3B CFI Data offset - This could vary */ -#define INTEL_CFI_MFG 0x00 /* Manufacturer ID */ -#define INTEL_CFI_PART 0x01 /* Product ID */ -#define INTEL_CFI_LOCK 0x02 /* */ -#define INTEL_CFI_TWPRG 0x1F /* Typical Single Word Program Timeout 2^n us */ -#define INTEL_CFI_MBUFW 0x20 /* Typical Max Buffer Write Timeout 2^n us */ -#define INTEL_CFI_TERB 0x21 /* Typical Block Erase Timeout 2^n ms */ -#define INTEL_CFI_MWPRG 0x23 /* Maximum Word program timeout 2^n us */ -#define INTEL_CFI_MERB 0x25 /* Maximum Block Erase Timeout 2^n s */ -#define INTEL_CFI_SIZE 0x27 /* Device size 2^n bytes */ -#define INTEL_CFI_BANK 0x2C /* Number of Bank */ -#define INTEL_CFI_SZ1A 0x2F /* Block Region Size */ -#define INTEL_CFI_SZ1B 0x30 -#define INTEL_CFI_SZ2A 0x33 -#define INTEL_CFI_SZ2B 0x34 -#define INTEL_CFI_BLK1 0x2D /* Number of Blocks */ -#define INTEL_CFI_BLK2 0x31 - -#define WR_BLOCK 0x20 - -#define SYNC __asm__("nop") - -/*----------------------------------------------------------------------- - * Functions - */ - -ulong flash_get_size(FPWV * addr, flash_info_t * info); -int flash_get_offsets(ulong base, flash_info_t * info); -int flash_cmd_rd(FPWV * addr, int index); -int write_data(flash_info_t * info, ulong dest, FPW data); -void flash_sync_real_protect(flash_info_t * info); -uchar intel_sector_protected(flash_info_t * info, ushort sector); - -flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; - -ulong flash_init(void) -{ - FPWV *flash_addr[CFG_MAX_FLASH_BANKS]; - ulong size; - int i; - - flash_addr[0] = (FPW *) CFG_FLASH0_BASE; -#ifdef CFG_FLASH1_BASE - flash_addr[1] = (FPW *) CFG_FLASH1_BASE; -#endif - - for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) { - memset(&flash_info[i], 0, sizeof(flash_info_t)); - - size = flash_get_size(flash_addr[i], &flash_info[i]); - flash_protect(FLAG_PROTECT_CLEAR, - flash_info[i].start[0], - flash_info[i].start[0] + size - 1, - &flash_info[0]); - /* get the h/w and s/w protection status in sync */ - flash_sync_real_protect(&flash_info[i]); - } - - /* Protect monitor and environment sectors */ - flash_protect(FLAG_PROTECT_SET, - CFG_MONITOR_BASE, - CFG_MONITOR_BASE + monitor_flash_len - 1, &flash_info[0]); - - return size; -} - -void flash_print_info(flash_info_t * info) -{ - int i; - - switch (info->flash_id & FLASH_VENDMASK) { - case FLASH_MAN_INTEL: - printf("INTEL "); - break; - default: - printf("Unknown Vendor "); - break; - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_28F160C3B: - printf("28F160C3B\n"); - break; - case FLASH_28F160C3T: - printf("28F160C3T\n"); - break; - case FLASH_28F320C3B: - printf("28F320C3B\n"); - break; - case FLASH_28F320C3T: - printf("28F320C3T\n"); - break; - case FLASH_28F640C3B: - printf("28F640C3B\n"); - break; - case FLASH_28F640C3T: - printf("28F640C3T\n"); - break; - default: - printf("Unknown Chip Type\n"); - return; - } - - if (info->size > 0x100000) { - int remainder; - - printf(" Size: %ld", info->size >> 20); - - remainder = (info->size % 0x100000); - if (remainder) { - remainder >>= 10; - remainder = (int)((float) - (((float)remainder / (float)1024) * - 10000)); - printf(".%d ", remainder); - } - - printf("MB in %d Sectors\n", info->sector_count); - } else - printf(" Size: %ld KB in %d Sectors\n", - info->size >> 10, 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"); -} - -/* - * The following code cannot be run from FLASH! - */ -ulong flash_get_size(FPWV * addr, flash_info_t * info) -{ - int intel = 0; - u16 value; - static int bank = 0; - - /* Write auto select command: read Manufacturer ID */ - /* Write auto select command sequence and test FLASH answer */ - *addr = (FPW) INTEL_RESET; /* restore read mode */ - *addr = (FPW) INTEL_READID; - - switch (addr[INTEL_CFI_MFG] & 0xff) { - case (ushort) INTEL_MANUFACT: - info->flash_id = FLASH_MAN_INTEL; - value = addr[INTEL_CFI_PART]; - intel = 1; - break; - default: - printf("Unknown Flash\n"); - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - *addr = (FPW) INTEL_RESET; /* restore read mode */ - return (0); /* no or unknown flash */ - } - - switch (value) { - case (u16) INTEL_ID_28F160C3B: - info->flash_id += FLASH_28F160C3B; - break; - case (u16) INTEL_ID_28F160C3T: - info->flash_id += FLASH_28F160C3T; - break; - case (u16) INTEL_ID_28F320C3B: - info->flash_id += FLASH_28F320C3B; - break; - case (u16) INTEL_ID_28F320C3T: - info->flash_id += FLASH_28F320C3T; - break; - case (u16) INTEL_ID_28F640C3B: - info->flash_id += FLASH_28F640C3B; - break; - case (u16) INTEL_ID_28F640C3T: - info->flash_id += FLASH_28F640C3T; - break; - default: - info->flash_id = FLASH_UNKNOWN; - break; - } - - if (intel) { - /* Intel spec. under CFI section */ - u32 sz, size, offset; - int sec, sectors, bs; - int part, i, j, cnt; - - part = flash_cmd_rd(addr, INTEL_CFI_BANK); - - /* Geometry y1 = y1 + 1, y2 = y2 + 1, CFI spec. - * To be exact, Z = [0x2f 0x30] (LE) * 256 bytes * [0x2D 0x2E] block count - * Z = [0x33 0x34] (LE) * 256 bytes * [0x31 0x32] block count - */ - offset = (u32) addr; - sectors = sec = 0; - size = sz = cnt = 0; - for (i = 0; i < part; i++) { - bs = (((addr[INTEL_CFI_SZ1B + i * 4] << 8) | - addr[INTEL_CFI_SZ1A + i * 4]) * 0x100); - sec = addr[INTEL_CFI_BLK1 + i * 4] + 1; - sz = bs * sec; - - for (j = 0; j < sec; j++) { - info->start[cnt++] = offset; - offset += bs; - } - - sectors += sec; - size += sz; - } - info->sector_count = sectors; - info->size = size; - } - - if (info->sector_count > CFG_MAX_FLASH_SECT) { - printf("** ERROR: sector count %d > max (%d) **\n", - info->sector_count, CFG_MAX_FLASH_SECT); - info->sector_count = CFG_MAX_FLASH_SECT; - } - - *addr = (FPW) INTEL_RESET; /* restore read mode */ - - return (info->size); -} - -int flash_cmd_rd(FPWV * addr, int index) -{ - return (int)addr[index]; -} - -/* - * This function gets the u-boot flash sector protection status - * (flash_info_t.protect[]) in sync with the sector protection - * status stored in hardware. - */ -void flash_sync_real_protect(flash_info_t * info) -{ - int i; - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_28F160C3B: - case FLASH_28F160C3T: - case FLASH_28F320C3B: - case FLASH_28F320C3T: - case FLASH_28F640C3B: - case FLASH_28F640C3T: - for (i = 0; i < info->sector_count; ++i) { - info->protect[i] = intel_sector_protected(info, i); - } - break; - default: - /* no h/w protect support */ - break; - } -} - -/* - * checks if "sector" in bank "info" is protected. Should work on intel - * strata flash chips 28FxxxJ3x in 8-bit mode. - * Returns 1 if sector is protected (or timed-out while trying to read - * protection status), 0 if it is not. - */ -uchar intel_sector_protected(flash_info_t * info, ushort sector) -{ - FPWV *addr; - FPWV *lock_conf_addr; - ulong start; - unsigned char ret; - - /* - * first, wait for the WSM to be finished. The rationale for - * waiting for the WSM to become idle for at most - * CFG_FLASH_ERASE_TOUT is as follows. The WSM can be busy - * because of: (1) erase, (2) program or (3) lock bit - * configuration. So we just wait for the longest timeout of - * the (1)-(3), i.e. the erase timeout. - */ - - /* wait at least 35ns (W12) before issuing Read Status Register */ - /*udelay(1); */ - addr = (FPWV *) info->start[sector]; - *addr = (FPW) INTEL_STATUS; - - start = get_timer(0); - while ((*addr & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED) { - if (get_timer(start) > CFG_FLASH_UNLOCK_TOUT) { - *addr = (FPW) INTEL_RESET; /* restore read mode */ - printf("WSM busy too long, can't get prot status\n"); - return 1; - } - } - - /* issue the Read Identifier Codes command */ - *addr = (FPW) INTEL_READID; - - /* Intel example code uses offset of 4 for 8-bit flash */ - lock_conf_addr = (FPWV *) info->start[sector]; - ret = (lock_conf_addr[INTEL_CFI_LOCK] & (FPW) INTEL_PROTECT) ? 1 : 0; - - /* put flash back in read mode */ - *addr = (FPW) INTEL_RESET; - - return ret; -} - -int flash_erase(flash_info_t * info, int s_first, int s_last) -{ - int flag, prot, sect; - ulong type, start, last; - int rcode = 0; - - 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; - } - - type = (info->flash_id & FLASH_VENDMASK); - if ((type != FLASH_MAN_INTEL)) { - type = (info->flash_id & FLASH_VENDMASK); - printf("Can't erase unknown flash type %08lx - aborted\n", - info->flash_id); - 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"); - - start = get_timer(0); - last = start; - - /* 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 */ - - FPWV *addr = (FPWV *) (info->start[sect]); - int min = 0; - - printf("Erasing sector %2d ... ", sect); - - /* arm simple, non interrupt dependent timer */ - start = get_timer(0); - - *addr = (FPW) INTEL_READID; - min = addr[INTEL_CFI_TERB]; - min = 1 << min; /* ms */ - min = (min / info->sector_count) * 1000; - - /* start erase block */ - *addr = (FPW) INTEL_CLEAR; /* clear status register */ - *addr = (FPW) INTEL_ERASE; /* erase setup */ - *addr = (FPW) INTEL_CONFIRM; /* erase confirm */ - - while ((*addr & (FPW) INTEL_FINISHED) != - (FPW) INTEL_FINISHED) { - - if (get_timer(start) > CFG_FLASH_ERASE_TOUT) { - printf("Timeout\n"); - *addr = (FPW) INTEL_SUSERASE; /* suspend erase */ - *addr = (FPW) INTEL_RESET; /* reset to read mode */ - - rcode = 1; - break; - } - } - - *addr = (FPW) INTEL_RESET; /* resest to read mode */ - - printf(" done\n"); - } - } - - return rcode; -} - -int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) -{ - if (info->flash_id == FLASH_UNKNOWN) - return 4; - - switch (info->flash_id & FLASH_VENDMASK) { - case FLASH_MAN_INTEL: - { - ulong cp, wp; - FPW data; - int i, l, rc, port_width; - - /* get lower word aligned address */ - wp = addr; - port_width = 1; - - /* - * 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 < port_width && cnt > 0; ++i) { - data = (data << 8) | *src++; - --cnt; - ++cp; - } - - for (; cnt == 0 && i < port_width; ++i, ++cp) - data = (data << 8) | (*(uchar *) cp); - - if ((rc = write_data(info, wp, data)) != 0) - return (rc); - - wp += port_width; - } - - /* handle word aligned part */ - while (cnt >= 2) { - data = *((FPW *) src); - - if ((rc = - write_data(info, (ulong) ((FPWV *) wp), - (FPW) data)) != 0) { - return (rc); - } - - src += sizeof(FPW); - wp += sizeof(FPW); - cnt -= sizeof(FPW); - } - - if (cnt == 0) - return ERR_OK; - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) { - data = (data >> 8) | (*src++ << 8); - --cnt; - } - for (; i < 2; ++i, ++cp) { - data |= (*(uchar *) cp); - } - - return write_data(info, (ulong) ((FPWV *) wp), - (FPW) data); - - } /* case FLASH_MAN_INTEL */ - - } /* switch */ - - return ERR_OK; -} - -/*----------------------------------------------------------------------- - * Write a word or halfword to Flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -int write_data(flash_info_t * info, ulong dest, FPW data) -{ - FPWV *addr = (FPWV *) dest; - ulong start; - int flag; - - /* Check if Flash is (sufficiently) erased */ - if ((*addr & data) != data) { - printf("not erased at %08lx (%lx)\n", (ulong) addr, - (ulong) * addr); - return (2); - } - - /* Disable interrupts which might cause a timeout here */ - flag = (int)disable_interrupts(); - - *addr = (FPW) INTEL_CLEAR; - *addr = (FPW) INTEL_RESET; - - *addr = (FPW) INTEL_WRSETUP; /* write setup */ - *addr = data; - - /* arm simple, non interrupt dependent timer */ - start = get_timer(0); - - /* wait while polling the status register */ - while ((*addr & (FPW) INTEL_OK) != (FPW) INTEL_OK) { - if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { - *addr = (FPW) INTEL_SUSERASE; /* suspend mode */ - *addr = (FPW) INTEL_CLEAR; /* clear status */ - *addr = (FPW) INTEL_RESET; /* reset */ - return (1); - } - } - - *addr = (FPW) INTEL_CLEAR; /* clear status */ - *addr = (FPW) INTEL_RESET; /* restore read mode */ - - return (0); -} - -#ifdef CFG_FLASH_PROTECTION -/*----------------------------------------------------------------------- - */ -int flash_real_protect(flash_info_t * info, long sector, int prot) -{ - int rcode = 0; /* assume success */ - FPWV *addr; /* address of sector */ - FPW value; - - addr = (FPWV *) (info->start[sector]); - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_28F160C3B: - case FLASH_28F160C3T: - case FLASH_28F320C3B: - case FLASH_28F320C3T: - case FLASH_28F640C3B: - case FLASH_28F640C3T: - *addr = (FPW) INTEL_RESET; /* make sure in read mode */ - *addr = (FPW) INTEL_LOCKBIT; /* lock command setup */ - - if (prot) - *addr = (FPW) INTEL_PROTECT; /* lock sector */ - else - *addr = (FPW) INTEL_CONFIRM; /* unlock sector */ - - /* now see if it really is locked/unlocked as requested */ - *addr = (FPW) INTEL_READID; - - /* read sector protection at sector address, (A7 .. A0) = 0x02. - * D0 = 1 for each device if protected. - * If at least one device is protected the sector is marked - * protected, but return failure. Mixed protected and - * unprotected devices within a sector should never happen. - */ - value = addr[2] & (FPW) INTEL_PROTECT; - if (value == 0) - info->protect[sector] = 0; - else if (value == (FPW) INTEL_PROTECT) - info->protect[sector] = 1; - else { - /* error, mixed protected and unprotected */ - rcode = 1; - info->protect[sector] = 1; - } - if (info->protect[sector] != prot) - rcode = 1; /* failed to protect/unprotect as requested */ - - /* reload all protection bits from hardware for now */ - flash_sync_real_protect(info); - break; - - default: - /* no hardware protect that we support */ - info->protect[sector] = prot; - break; - } - - return rcode; -} -#endif /* CFG_FLASH_PROTECTION */ -#endif /* CFG_FLASH_CFI */ |