+++ /dev/null
-/*
- * (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 */
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