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-rw-r--r--drivers/cfi_flash.c1528
1 files changed, 0 insertions, 1528 deletions
diff --git a/drivers/cfi_flash.c b/drivers/cfi_flash.c
deleted file mode 100644
index 5579a1e..0000000
--- a/drivers/cfi_flash.c
+++ /dev/null
@@ -1,1528 +0,0 @@
-/*
- * (C) Copyright 2002-2004
- * Brad Kemp, Seranoa Networks, Brad.Kemp@seranoa.com
- *
- * Copyright (C) 2003 Arabella Software Ltd.
- * Yuli Barcohen <yuli@arabellasw.com>
- *
- * Copyright (C) 2004
- * Ed Okerson
- *
- * Copyright (C) 2006
- * Tolunay Orkun <listmember@orkun.us>
- *
- * 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
- *
- */
-
-/* The DEBUG define must be before common to enable debugging */
-/* #define DEBUG */
-
-#include <common.h>
-#include <asm/processor.h>
-#include <asm/io.h>
-#include <asm/byteorder.h>
-#include <environment.h>
-#ifdef CFG_FLASH_CFI_DRIVER
-
-/*
- * This file implements a Common Flash Interface (CFI) driver for U-Boot.
- * The width of the port and the width of the chips are determined at initialization.
- * These widths are used to calculate the address for access CFI data structures.
- *
- * References
- * JEDEC Standard JESD68 - Common Flash Interface (CFI)
- * JEDEC Standard JEP137-A Common Flash Interface (CFI) ID Codes
- * Intel Application Note 646 Common Flash Interface (CFI) and Command Sets
- * Intel 290667-008 3 Volt Intel StrataFlash Memory datasheet
- * AMD CFI Specification, Release 2.0 December 1, 2001
- * AMD/Spansion Application Note: Migration from Single-byte to Three-byte
- * Device IDs, Publication Number 25538 Revision A, November 8, 2001
- *
- * define CFG_WRITE_SWAPPED_DATA, if you have to swap the Bytes between
- * reading and writing ... (yes there is such a Hardware).
- */
-
-#ifndef CFG_FLASH_BANKS_LIST
-#define CFG_FLASH_BANKS_LIST { CFG_FLASH_BASE }
-#endif
-
-#define FLASH_CMD_CFI 0x98
-#define FLASH_CMD_READ_ID 0x90
-#define FLASH_CMD_RESET 0xff
-#define FLASH_CMD_BLOCK_ERASE 0x20
-#define FLASH_CMD_ERASE_CONFIRM 0xD0
-#define FLASH_CMD_WRITE 0x40
-#define FLASH_CMD_PROTECT 0x60
-#define FLASH_CMD_PROTECT_SET 0x01
-#define FLASH_CMD_PROTECT_CLEAR 0xD0
-#define FLASH_CMD_CLEAR_STATUS 0x50
-#define FLASH_CMD_WRITE_TO_BUFFER 0xE8
-#define FLASH_CMD_WRITE_BUFFER_CONFIRM 0xD0
-
-#define FLASH_STATUS_DONE 0x80
-#define FLASH_STATUS_ESS 0x40
-#define FLASH_STATUS_ECLBS 0x20
-#define FLASH_STATUS_PSLBS 0x10
-#define FLASH_STATUS_VPENS 0x08
-#define FLASH_STATUS_PSS 0x04
-#define FLASH_STATUS_DPS 0x02
-#define FLASH_STATUS_R 0x01
-#define FLASH_STATUS_PROTECT 0x01
-
-#define AMD_CMD_RESET 0xF0
-#define AMD_CMD_WRITE 0xA0
-#define AMD_CMD_ERASE_START 0x80
-#define AMD_CMD_ERASE_SECTOR 0x30
-#define AMD_CMD_UNLOCK_START 0xAA
-#define AMD_CMD_UNLOCK_ACK 0x55
-#define AMD_CMD_WRITE_TO_BUFFER 0x25
-#define AMD_CMD_WRITE_BUFFER_CONFIRM 0x29
-
-#define AMD_STATUS_TOGGLE 0x40
-#define AMD_STATUS_ERROR 0x20
-
-#define AMD_ADDR_ERASE_START ((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555)
-#define AMD_ADDR_START ((info->portwidth == FLASH_CFI_8BIT) ? 0xAAA : 0x555)
-#define AMD_ADDR_ACK ((info->portwidth == FLASH_CFI_8BIT) ? 0x555 : 0x2AA)
-
-#define FLASH_OFFSET_MANUFACTURER_ID 0x00
-#define FLASH_OFFSET_DEVICE_ID 0x01
-#define FLASH_OFFSET_DEVICE_ID2 0x0E
-#define FLASH_OFFSET_DEVICE_ID3 0x0F
-#define FLASH_OFFSET_CFI 0x55
-#define FLASH_OFFSET_CFI_ALT 0x555
-#define FLASH_OFFSET_CFI_RESP 0x10
-#define FLASH_OFFSET_PRIMARY_VENDOR 0x13
-#define FLASH_OFFSET_EXT_QUERY_T_P_ADDR 0x15 /* extended query table primary addr */
-#define FLASH_OFFSET_WTOUT 0x1F
-#define FLASH_OFFSET_WBTOUT 0x20
-#define FLASH_OFFSET_ETOUT 0x21
-#define FLASH_OFFSET_CETOUT 0x22
-#define FLASH_OFFSET_WMAX_TOUT 0x23
-#define FLASH_OFFSET_WBMAX_TOUT 0x24
-#define FLASH_OFFSET_EMAX_TOUT 0x25
-#define FLASH_OFFSET_CEMAX_TOUT 0x26
-#define FLASH_OFFSET_SIZE 0x27
-#define FLASH_OFFSET_INTERFACE 0x28
-#define FLASH_OFFSET_BUFFER_SIZE 0x2A
-#define FLASH_OFFSET_NUM_ERASE_REGIONS 0x2C
-#define FLASH_OFFSET_ERASE_REGIONS 0x2D
-#define FLASH_OFFSET_PROTECT 0x02
-#define FLASH_OFFSET_USER_PROTECTION 0x85
-#define FLASH_OFFSET_INTEL_PROTECTION 0x81
-
-#define CFI_CMDSET_NONE 0
-#define CFI_CMDSET_INTEL_EXTENDED 1
-#define CFI_CMDSET_AMD_STANDARD 2
-#define CFI_CMDSET_INTEL_STANDARD 3
-#define CFI_CMDSET_AMD_EXTENDED 4
-#define CFI_CMDSET_MITSU_STANDARD 256
-#define CFI_CMDSET_MITSU_EXTENDED 257
-#define CFI_CMDSET_SST 258
-
-#ifdef CFG_FLASH_CFI_AMD_RESET /* needed for STM_ID_29W320DB on UC100 */
-# undef FLASH_CMD_RESET
-# define FLASH_CMD_RESET AMD_CMD_RESET /* use AMD-Reset instead */
-#endif
-
-typedef union {
- unsigned char c;
- unsigned short w;
- unsigned long l;
- unsigned long long ll;
-} cfiword_t;
-
-typedef union {
- volatile unsigned char *cp;
- volatile unsigned short *wp;
- volatile unsigned long *lp;
- volatile unsigned long long *llp;
-} cfiptr_t;
-
-#define NUM_ERASE_REGIONS 4 /* max. number of erase regions */
-
-static uint flash_offset_cfi[2]={FLASH_OFFSET_CFI,FLASH_OFFSET_CFI_ALT};
-
-/* use CFG_MAX_FLASH_BANKS_DETECT if defined */
-#ifdef CFG_MAX_FLASH_BANKS_DETECT
-static ulong bank_base[CFG_MAX_FLASH_BANKS_DETECT] = CFG_FLASH_BANKS_LIST;
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS_DETECT]; /* FLASH chips info */
-#else
-static ulong bank_base[CFG_MAX_FLASH_BANKS] = CFG_FLASH_BANKS_LIST;
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* FLASH chips info */
-#endif
-
-/*
- * Check if chip width is defined. If not, start detecting with 8bit.
- */
-#ifndef CFG_FLASH_CFI_WIDTH
-#define CFG_FLASH_CFI_WIDTH FLASH_CFI_8BIT
-#endif
-
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-
-typedef unsigned long flash_sect_t;
-
-static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c);
-static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf);
-static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
-static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect);
-static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
-static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
-static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd);
-static void flash_read_jedec_ids (flash_info_t * info);
-static int flash_detect_cfi (flash_info_t * info);
-static int flash_write_cfiword (flash_info_t * info, ulong dest, cfiword_t cword);
-static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
- ulong tout, char *prompt);
-ulong flash_get_size (ulong base, int banknum);
-#if defined(CFG_ENV_IS_IN_FLASH) || defined(CFG_ENV_ADDR_REDUND) || (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
-static flash_info_t *flash_get_info(ulong base);
-#endif
-#ifdef CFG_FLASH_USE_BUFFER_WRITE
-static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp, int len);
-#endif
-
-/*-----------------------------------------------------------------------
- * create an address based on the offset and the port width
- */
-inline uchar *flash_make_addr (flash_info_t * info, flash_sect_t sect, uint offset)
-{
- return ((uchar *) (info->start[sect] + (offset * info->portwidth)));
-}
-
-#ifdef DEBUG
-/*-----------------------------------------------------------------------
- * Debug support
- */
-void print_longlong (char *str, unsigned long long data)
-{
- int i;
- char *cp;
-
- cp = (unsigned char *) &data;
- for (i = 0; i < 8; i++)
- sprintf (&str[i * 2], "%2.2x", *cp++);
-}
-static void flash_printqry (flash_info_t * info, flash_sect_t sect)
-{
- cfiptr_t cptr;
- int x, y;
-
- for (x = 0; x < 0x40; x += 16U / info->portwidth) {
- cptr.cp =
- flash_make_addr (info, sect,
- x + FLASH_OFFSET_CFI_RESP);
- debug ("%p : ", cptr.cp);
- for (y = 0; y < 16; y++) {
- debug ("%2.2x ", cptr.cp[y]);
- }
- debug (" ");
- for (y = 0; y < 16; y++) {
- if (cptr.cp[y] >= 0x20 && cptr.cp[y] <= 0x7e) {
- debug ("%c", cptr.cp[y]);
- } else {
- debug (".");
- }
- }
- debug ("\n");
- }
-}
-#endif
-
-
-/*-----------------------------------------------------------------------
- * read a character at a port width address
- */
-inline uchar flash_read_uchar (flash_info_t * info, uint offset)
-{
- uchar *cp;
-
- cp = flash_make_addr (info, 0, offset);
-#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
- return (cp[0]);
-#else
- return (cp[info->portwidth - 1]);
-#endif
-}
-
-/*-----------------------------------------------------------------------
- * read a short word by swapping for ppc format.
- */
-ushort flash_read_ushort (flash_info_t * info, flash_sect_t sect, uint offset)
-{
- uchar *addr;
- ushort retval;
-
-#ifdef DEBUG
- int x;
-#endif
- addr = flash_make_addr (info, sect, offset);
-
-#ifdef DEBUG
- debug ("ushort addr is at %p info->portwidth = %d\n", addr,
- info->portwidth);
- for (x = 0; x < 2 * info->portwidth; x++) {
- debug ("addr[%x] = 0x%x\n", x, addr[x]);
- }
-#endif
-#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
- retval = ((addr[(info->portwidth)] << 8) | addr[0]);
-#else
- retval = ((addr[(2 * info->portwidth) - 1] << 8) |
- addr[info->portwidth - 1]);
-#endif
-
- debug ("retval = 0x%x\n", retval);
- return retval;
-}
-
-/*-----------------------------------------------------------------------
- * read a long word by picking the least significant byte of each maximum
- * port size word. Swap for ppc format.
- */
-ulong flash_read_long (flash_info_t * info, flash_sect_t sect, uint offset)
-{
- uchar *addr;
- ulong retval;
-
-#ifdef DEBUG
- int x;
-#endif
- addr = flash_make_addr (info, sect, offset);
-
-#ifdef DEBUG
- debug ("long addr is at %p info->portwidth = %d\n", addr,
- info->portwidth);
- for (x = 0; x < 4 * info->portwidth; x++) {
- debug ("addr[%x] = 0x%x\n", x, addr[x]);
- }
-#endif
-#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
- retval = (addr[0] << 16) | (addr[(info->portwidth)] << 24) |
- (addr[(2 * info->portwidth)]) | (addr[(3 * info->portwidth)] << 8);
-#else
- retval = (addr[(2 * info->portwidth) - 1] << 24) |
- (addr[(info->portwidth) - 1] << 16) |
- (addr[(4 * info->portwidth) - 1] << 8) |
- addr[(3 * info->portwidth) - 1];
-#endif
- return retval;
-}
-
-
-/*-----------------------------------------------------------------------
- */
-unsigned long flash_init (void)
-{
- unsigned long size = 0;
- int i;
-
-#ifdef CFG_FLASH_PROTECTION
- char *s = getenv("unlock");
-#endif
-
- /* Init: no FLASHes known */
- for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- size += flash_info[i].size = flash_get_size (bank_base[i], i);
- if (flash_info[i].flash_id == FLASH_UNKNOWN) {
-#ifndef CFG_FLASH_QUIET_TEST
- printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
- i+1, flash_info[i].size, flash_info[i].size << 20);
-#endif /* CFG_FLASH_QUIET_TEST */
- }
-#ifdef CFG_FLASH_PROTECTION
- else if ((s != NULL) && (strcmp(s, "yes") == 0)) {
- /*
- * Only the U-Boot image and it's environment is protected,
- * all other sectors are unprotected (unlocked) if flash
- * hardware protection is used (CFG_FLASH_PROTECTION) and
- * the environment variable "unlock" is set to "yes".
- */
- if (flash_info[i].legacy_unlock) {
- int k;
-
- /*
- * Disable legacy_unlock temporarily, since
- * flash_real_protect would relock all other sectors
- * again otherwise.
- */
- flash_info[i].legacy_unlock = 0;
-
- /*
- * Legacy unlocking (e.g. Intel J3) -> unlock only one
- * sector. This will unlock all sectors.
- */
- flash_real_protect (&flash_info[i], 0, 0);
-
- flash_info[i].legacy_unlock = 1;
-
- /*
- * Manually mark other sectors as unlocked (unprotected)
- */
- for (k = 1; k < flash_info[i].sector_count; k++)
- flash_info[i].protect[k] = 0;
- } else {
- /*
- * No legancy unlocking -> unlock all sectors
- */
- flash_protect (FLAG_PROTECT_CLEAR,
- flash_info[i].start[0],
- flash_info[i].start[0] + flash_info[i].size - 1,
- &flash_info[i]);
- }
- }
-#endif /* CFG_FLASH_PROTECTION */
- }
-
- /* Monitor protection ON by default */
-#if (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
- flash_protect (FLAG_PROTECT_SET,
- CFG_MONITOR_BASE,
- CFG_MONITOR_BASE + monitor_flash_len - 1,
- flash_get_info(CFG_MONITOR_BASE));
-#endif
-
- /* Environment protection ON by default */
-#ifdef CFG_ENV_IS_IN_FLASH
- flash_protect (FLAG_PROTECT_SET,
- CFG_ENV_ADDR,
- CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
- flash_get_info(CFG_ENV_ADDR));
-#endif
-
- /* Redundant environment protection ON by default */
-#ifdef CFG_ENV_ADDR_REDUND
- flash_protect (FLAG_PROTECT_SET,
- CFG_ENV_ADDR_REDUND,
- CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
- flash_get_info(CFG_ENV_ADDR_REDUND));
-#endif
- return (size);
-}
-
-/*-----------------------------------------------------------------------
- */
-#if defined(CFG_ENV_IS_IN_FLASH) || defined(CFG_ENV_ADDR_REDUND) || (CFG_MONITOR_BASE >= CFG_FLASH_BASE)
-static flash_info_t *flash_get_info(ulong base)
-{
- int i;
- flash_info_t * info = 0;
-
- for (i = 0; i < CFG_MAX_FLASH_BANKS; i ++) {
- info = & flash_info[i];
- if (info->size && info->start[0] <= base &&
- base <= info->start[0] + info->size - 1)
- break;
- }
-
- return i == CFG_MAX_FLASH_BANKS ? 0 : info;
-}
-#endif
-
-/*-----------------------------------------------------------------------
- */
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
- int rcode = 0;
- int prot;
- flash_sect_t sect;
-
- if (info->flash_id != FLASH_MAN_CFI) {
- puts ("Can't erase unknown flash type - aborted\n");
- return 1;
- }
- if ((s_first < 0) || (s_first > s_last)) {
- puts ("- no sectors to erase\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 {
- putc ('\n');
- }
-
-
- for (sect = s_first; sect <= s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- case CFI_CMDSET_INTEL_EXTENDED:
- flash_write_cmd (info, sect, 0, FLASH_CMD_CLEAR_STATUS);
- flash_write_cmd (info, sect, 0, FLASH_CMD_BLOCK_ERASE);
- flash_write_cmd (info, sect, 0, FLASH_CMD_ERASE_CONFIRM);
- break;
- case CFI_CMDSET_AMD_STANDARD:
- case CFI_CMDSET_AMD_EXTENDED:
- flash_unlock_seq (info, sect);
- flash_write_cmd (info, sect, AMD_ADDR_ERASE_START,
- AMD_CMD_ERASE_START);
- flash_unlock_seq (info, sect);
- flash_write_cmd (info, sect, 0, AMD_CMD_ERASE_SECTOR);
- break;
- default:
- debug ("Unkown flash vendor %d\n",
- info->vendor);
- break;
- }
-
- if (flash_full_status_check
- (info, sect, info->erase_blk_tout, "erase")) {
- rcode = 1;
- } else
- putc ('.');
- }
- }
- puts (" done\n");
- return rcode;
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_print_info (flash_info_t * info)
-{
- int i;
-
- if (info->flash_id != FLASH_MAN_CFI) {
- puts ("missing or unknown FLASH type\n");
- return;
- }
-
- printf ("CFI conformant FLASH (%d x %d)",
- (info->portwidth << 3), (info->chipwidth << 3));
- printf (" Size: %ld MB in %d Sectors\n",
- info->size >> 20, info->sector_count);
- printf (" ");
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- printf ("Intel Standard");
- break;
- case CFI_CMDSET_INTEL_EXTENDED:
- printf ("Intel Extended");
- break;
- case CFI_CMDSET_AMD_STANDARD:
- printf ("AMD Standard");
- break;
- case CFI_CMDSET_AMD_EXTENDED:
- printf ("AMD Extended");
- break;
- default:
- printf ("Unknown (%d)", info->vendor);
- break;
- }
- printf (" command set, Manufacturer ID: 0x%02X, Device ID: 0x%02X",
- info->manufacturer_id, info->device_id);
- if (info->device_id == 0x7E) {
- printf("%04X", info->device_id2);
- }
- printf ("\n Erase timeout: %ld ms, write timeout: %ld ms\n",
- info->erase_blk_tout,
- info->write_tout);
- if (info->buffer_size > 1) {
- printf (" Buffer write timeout: %ld ms, buffer size: %d bytes\n",
- info->buffer_write_tout,
- info->buffer_size);
- }
-
- puts ("\n Sector Start Addresses:");
- for (i = 0; i < info->sector_count; ++i) {
- if ((i % 5) == 0)
- printf ("\n");
-#ifdef CFG_FLASH_EMPTY_INFO
- int k;
- int size;
- int erased;
- volatile unsigned long *flash;
-
- /*
- * Check if whole sector is erased
- */
- if (i != (info->sector_count - 1))
- size = info->start[i + 1] - info->start[i];
- else
- size = info->start[0] + info->size - info->start[i];
- erased = 1;
- flash = (volatile unsigned long *) info->start[i];
- size = size >> 2; /* divide by 4 for longword access */
- for (k = 0; k < size; k++) {
- if (*flash++ != 0xffffffff) {
- erased = 0;
- break;
- }
- }
-
- /* print empty and read-only info */
- printf (" %08lX %c %s ",
- info->start[i],
- erased ? 'E' : ' ',
- info->protect[i] ? "RO" : " ");
-#else /* ! CFG_FLASH_EMPTY_INFO */
- printf (" %08lX %s ",
- info->start[i],
- info->protect[i] ? "RO" : " ");
-#endif
- }
- putc ('\n');
- return;
-}
-
-/*-----------------------------------------------------------------------
- * 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 wp;
- ulong cp;
- int aln;
- cfiword_t cword;
- int i, rc;
-
-#ifdef CFG_FLASH_USE_BUFFER_WRITE
- int buffered_size;
-#endif
- /* get lower aligned address */
- /* get lower aligned address */
- wp = (addr & ~(info->portwidth - 1));
-
- /* handle unaligned start */
- if ((aln = addr - wp) != 0) {
- cword.l = 0;
- cp = wp;
- for (i = 0; i < aln; ++i, ++cp)
- flash_add_byte (info, &cword, (*(uchar *) cp));
-
- for (; (i < info->portwidth) && (cnt > 0); i++) {
- flash_add_byte (info, &cword, *src++);
- cnt--;
- cp++;
- }
- for (; (cnt == 0) && (i < info->portwidth); ++i, ++cp)
- flash_add_byte (info, &cword, (*(uchar *) cp));
- if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
- return rc;
- wp = cp;
- }
-
- /* handle the aligned part */
-#ifdef CFG_FLASH_USE_BUFFER_WRITE
- buffered_size = (info->portwidth / info->chipwidth);
- buffered_size *= info->buffer_size;
- while (cnt >= info->portwidth) {
- /* prohibit buffer write when buffer_size is 1 */
- if (info->buffer_size == 1) {
- cword.l = 0;
- for (i = 0; i < info->portwidth; i++)
- flash_add_byte (info, &cword, *src++);
- if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
- return rc;
- wp += info->portwidth;
- cnt -= info->portwidth;
- continue;
- }
-
- /* write buffer until next buffered_size aligned boundary */
- i = buffered_size - (wp % buffered_size);
- if (i > cnt)
- i = cnt;
- if ((rc = flash_write_cfibuffer (info, wp, src, i)) != ERR_OK)
- return rc;
- i -= i & (info->portwidth - 1);
- wp += i;
- src += i;
- cnt -= i;
- }
-#else
- while (cnt >= info->portwidth) {
- cword.l = 0;
- for (i = 0; i < info->portwidth; i++) {
- flash_add_byte (info, &cword, *src++);
- }
- if ((rc = flash_write_cfiword (info, wp, cword)) != 0)
- return rc;
- wp += info->portwidth;
- cnt -= info->portwidth;
- }
-#endif /* CFG_FLASH_USE_BUFFER_WRITE */
- if (cnt == 0) {
- return (0);
- }
-
- /*
- * handle unaligned tail bytes
- */
- cword.l = 0;
- for (i = 0, cp = wp; (i < info->portwidth) && (cnt > 0); ++i, ++cp) {
- flash_add_byte (info, &cword, *src++);
- --cnt;
- }
- for (; i < info->portwidth; ++i, ++cp) {
- flash_add_byte (info, &cword, (*(uchar *) cp));
- }
-
- return flash_write_cfiword (info, wp, cword);
-}
-
-/*-----------------------------------------------------------------------
- */
-#ifdef CFG_FLASH_PROTECTION
-
-int flash_real_protect (flash_info_t * info, long sector, int prot)
-{
- int retcode = 0;
-
- flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
- flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT);
- if (prot)
- flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_SET);
- else
- flash_write_cmd (info, sector, 0, FLASH_CMD_PROTECT_CLEAR);
-
- if ((retcode =
- flash_full_status_check (info, sector, info->erase_blk_tout,
- prot ? "protect" : "unprotect")) == 0) {
-
- info->protect[sector] = prot;
-
- /*
- * On some of Intel's flash chips (marked via legacy_unlock)
- * unprotect unprotects all locking.
- */
- if ((prot == 0) && (info->legacy_unlock)) {
- flash_sect_t i;
-
- for (i = 0; i < info->sector_count; i++) {
- if (info->protect[i])
- flash_real_protect (info, i, 1);
- }
- }
- }
- return retcode;
-}
-
-/*-----------------------------------------------------------------------
- * flash_read_user_serial - read the OneTimeProgramming cells
- */
-void flash_read_user_serial (flash_info_t * info, void *buffer, int offset,
- int len)
-{
- uchar *src;
- uchar *dst;
-
- dst = buffer;
- src = flash_make_addr (info, 0, FLASH_OFFSET_USER_PROTECTION);
- flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
- memcpy (dst, src + offset, len);
- flash_write_cmd (info, 0, 0, info->cmd_reset);
-}
-
-/*
- * flash_read_factory_serial - read the device Id from the protection area
- */
-void flash_read_factory_serial (flash_info_t * info, void *buffer, int offset,
- int len)
-{
- uchar *src;
-
- src = flash_make_addr (info, 0, FLASH_OFFSET_INTEL_PROTECTION);
- flash_write_cmd (info, 0, 0, FLASH_CMD_READ_ID);
- memcpy (buffer, src + offset, len);
- flash_write_cmd (info, 0, 0, info->cmd_reset);
-}
-
-#endif /* CFG_FLASH_PROTECTION */
-
-/*
- * flash_is_busy - check to see if the flash is busy
- * This routine checks the status of the chip and returns true if the chip is busy
- */
-static int flash_is_busy (flash_info_t * info, flash_sect_t sect)
-{
- int retval;
-
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- case CFI_CMDSET_INTEL_EXTENDED:
- retval = !flash_isset (info, sect, 0, FLASH_STATUS_DONE);
- break;
- case CFI_CMDSET_AMD_STANDARD:
- case CFI_CMDSET_AMD_EXTENDED:
- retval = flash_toggle (info, sect, 0, AMD_STATUS_TOGGLE);
- break;
- default:
- retval = 0;
- }
- debug ("flash_is_busy: %d\n", retval);
- return retval;
-}
-
-/*-----------------------------------------------------------------------
- * wait for XSR.7 to be set. Time out with an error if it does not.
- * This routine does not set the flash to read-array mode.
- */
-static int flash_status_check (flash_info_t * info, flash_sect_t sector,
- ulong tout, char *prompt)
-{
- ulong start;
-
-#if CFG_HZ != 1000
- tout *= CFG_HZ/1000;
-#endif
-
- /* Wait for command completion */
- start = get_timer (0);
- while (flash_is_busy (info, sector)) {
- if (get_timer (start) > tout) {
- printf ("Flash %s timeout at address %lx data %lx\n",
- prompt, info->start[sector],
- flash_read_long (info, sector, 0));
- flash_write_cmd (info, sector, 0, info->cmd_reset);
- return ERR_TIMOUT;
- }
- udelay (1); /* also triggers watchdog */
- }
- return ERR_OK;
-}
-
-/*-----------------------------------------------------------------------
- * Wait for XSR.7 to be set, if it times out print an error, otherwise do a full status check.
- * This routine sets the flash to read-array mode.
- */
-static int flash_full_status_check (flash_info_t * info, flash_sect_t sector,
- ulong tout, char *prompt)
-{
- int retcode;
-
- retcode = flash_status_check (info, sector, tout, prompt);
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_EXTENDED:
- case CFI_CMDSET_INTEL_STANDARD:
- if ((retcode == ERR_OK)
- && !flash_isequal (info, sector, 0, FLASH_STATUS_DONE)) {
- retcode = ERR_INVAL;
- printf ("Flash %s error at address %lx\n", prompt,
- info->start[sector]);
- if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS | FLASH_STATUS_PSLBS)) {
- puts ("Command Sequence Error.\n");
- } else if (flash_isset (info, sector, 0, FLASH_STATUS_ECLBS)) {
- puts ("Block Erase Error.\n");
- retcode = ERR_NOT_ERASED;
- } else if (flash_isset (info, sector, 0, FLASH_STATUS_PSLBS)) {
- puts ("Locking Error\n");
- }
- if (flash_isset (info, sector, 0, FLASH_STATUS_DPS)) {
- puts ("Block locked.\n");
- retcode = ERR_PROTECTED;
- }
- if (flash_isset (info, sector, 0, FLASH_STATUS_VPENS))
- puts ("Vpp Low Error.\n");
- }
- flash_write_cmd (info, sector, 0, info->cmd_reset);
- break;
- default:
- break;
- }
- return retcode;
-}
-
-/*-----------------------------------------------------------------------
- */
-static void flash_add_byte (flash_info_t * info, cfiword_t * cword, uchar c)
-{
-#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
- unsigned short w;
- unsigned int l;
- unsigned long long ll;
-#endif
-
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- cword->c = c;
- break;
- case FLASH_CFI_16BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
- w = c;
- w <<= 8;
- cword->w = (cword->w >> 8) | w;
-#else
- cword->w = (cword->w << 8) | c;
-#endif
- break;
- case FLASH_CFI_32BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
- l = c;
- l <<= 24;
- cword->l = (cword->l >> 8) | l;
-#else
- cword->l = (cword->l << 8) | c;
-#endif
- break;
- case FLASH_CFI_64BIT:
-#if defined(__LITTLE_ENDIAN) && !defined(CFG_WRITE_SWAPPED_DATA)
- ll = c;
- ll <<= 56;
- cword->ll = (cword->ll >> 8) | ll;
-#else
- cword->ll = (cword->ll << 8) | c;
-#endif
- break;
- }
-}
-
-
-/*-----------------------------------------------------------------------
- * make a proper sized command based on the port and chip widths
- */
-static void flash_make_cmd (flash_info_t * info, uchar cmd, void *cmdbuf)
-{
- int i;
- uchar *cp = (uchar *) cmdbuf;
-
-#if defined(__LITTLE_ENDIAN) || defined(CFG_WRITE_SWAPPED_DATA)
- for (i = info->portwidth; i > 0; i--)
-#else
- for (i = 1; i <= info->portwidth; i++)
-#endif
- *cp++ = (i & (info->chipwidth - 1)) ? '\0' : cmd;
-}
-
-/*
- * Write a proper sized command to the correct address
- */
-static void flash_write_cmd (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
-{
-
- volatile cfiptr_t addr;
- cfiword_t cword;
-
- addr.cp = flash_make_addr (info, sect, offset);
- flash_make_cmd (info, cmd, &cword);
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- debug ("fwc addr %p cmd %x %x 8bit x %d bit\n", addr.cp, cmd,
- cword.c, info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- *addr.cp = cword.c;
- break;
- case FLASH_CFI_16BIT:
- debug ("fwc addr %p cmd %x %4.4x 16bit x %d bit\n", addr.wp,
- cmd, cword.w,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- *addr.wp = cword.w;
- break;
- case FLASH_CFI_32BIT:
- debug ("fwc addr %p cmd %x %8.8lx 32bit x %d bit\n", addr.lp,
- cmd, cword.l,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- *addr.lp = cword.l;
- break;
- case FLASH_CFI_64BIT:
-#ifdef DEBUG
- {
- char str[20];
-
- print_longlong (str, cword.ll);
-
- debug ("fwrite addr %p cmd %x %s 64 bit x %d bit\n",
- addr.llp, cmd, str,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- }
-#endif
- *addr.llp = cword.ll;
- break;
- }
-
- /* Ensure all the instructions are fully finished */
- sync();
-}
-
-static void flash_unlock_seq (flash_info_t * info, flash_sect_t sect)
-{
- flash_write_cmd (info, sect, AMD_ADDR_START, AMD_CMD_UNLOCK_START);
- flash_write_cmd (info, sect, AMD_ADDR_ACK, AMD_CMD_UNLOCK_ACK);
-}
-
-/*-----------------------------------------------------------------------
- */
-static int flash_isequal (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
-{
- cfiptr_t cptr;
- cfiword_t cword;
- int retval;
-
- cptr.cp = flash_make_addr (info, sect, offset);
- flash_make_cmd (info, cmd, &cword);
-
- debug ("is= cmd %x(%c) addr %p ", cmd, cmd, cptr.cp);
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- debug ("is= %x %x\n", cptr.cp[0], cword.c);
- retval = (cptr.cp[0] == cword.c);
- break;
- case FLASH_CFI_16BIT:
- debug ("is= %4.4x %4.4x\n", cptr.wp[0], cword.w);
- retval = (cptr.wp[0] == cword.w);
- break;
- case FLASH_CFI_32BIT:
- debug ("is= %8.8lx %8.8lx\n", cptr.lp[0], cword.l);
- retval = (cptr.lp[0] == cword.l);
- break;
- case FLASH_CFI_64BIT:
-#ifdef DEBUG
- {
- char str1[20];
- char str2[20];
-
- print_longlong (str1, cptr.llp[0]);
- print_longlong (str2, cword.ll);
- debug ("is= %s %s\n", str1, str2);
- }
-#endif
- retval = (cptr.llp[0] == cword.ll);
- break;
- default:
- retval = 0;
- break;
- }
- return retval;
-}
-
-/*-----------------------------------------------------------------------
- */
-static int flash_isset (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
-{
- cfiptr_t cptr;
- cfiword_t cword;
- int retval;
-
- cptr.cp = flash_make_addr (info, sect, offset);
- flash_make_cmd (info, cmd, &cword);
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- retval = ((cptr.cp[0] & cword.c) == cword.c);
- break;
- case FLASH_CFI_16BIT:
- retval = ((cptr.wp[0] & cword.w) == cword.w);
- break;
- case FLASH_CFI_32BIT:
- retval = ((cptr.lp[0] & cword.l) == cword.l);
- break;
- case FLASH_CFI_64BIT:
- retval = ((cptr.llp[0] & cword.ll) == cword.ll);
- break;
- default:
- retval = 0;
- break;
- }
- return retval;
-}
-
-/*-----------------------------------------------------------------------
- */
-static int flash_toggle (flash_info_t * info, flash_sect_t sect, uint offset, uchar cmd)
-{
- cfiptr_t cptr;
- cfiword_t cword;
- int retval;
-
- cptr.cp = flash_make_addr (info, sect, offset);
- flash_make_cmd (info, cmd, &cword);
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- retval = ((cptr.cp[0] & cword.c) != (cptr.cp[0] & cword.c));
- break;
- case FLASH_CFI_16BIT:
- retval = ((cptr.wp[0] & cword.w) != (cptr.wp[0] & cword.w));
- break;
- case FLASH_CFI_32BIT:
- retval = ((cptr.lp[0] & cword.l) != (cptr.lp[0] & cword.l));
- break;
- case FLASH_CFI_64BIT:
- retval = ((cptr.llp[0] & cword.ll) !=
- (cptr.llp[0] & cword.ll));
- break;
- default:
- retval = 0;
- break;
- }
- return retval;
-}
-
-/*-----------------------------------------------------------------------
- * read jedec ids from device and set corresponding fields in info struct
- *
- * Note: assume cfi->vendor, cfi->portwidth and cfi->chipwidth are correct
- *
-*/
-static void flash_read_jedec_ids (flash_info_t * info)
-{
- info->manufacturer_id = 0;
- info->device_id = 0;
- info->device_id2 = 0;
-
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- case CFI_CMDSET_INTEL_EXTENDED:
- flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
- flash_write_cmd(info, 0, 0, FLASH_CMD_READ_ID);
- udelay(1000); /* some flash are slow to respond */
- info->manufacturer_id = flash_read_uchar (info,
- FLASH_OFFSET_MANUFACTURER_ID);
- info->device_id = flash_read_uchar (info,
- FLASH_OFFSET_DEVICE_ID);
- flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
- break;
- case CFI_CMDSET_AMD_STANDARD:
- case CFI_CMDSET_AMD_EXTENDED:
- flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
- flash_unlock_seq(info, 0);
- flash_write_cmd(info, 0, AMD_ADDR_START, FLASH_CMD_READ_ID);
- udelay(1000); /* some flash are slow to respond */
- info->manufacturer_id = flash_read_uchar (info,
- FLASH_OFFSET_MANUFACTURER_ID);
- info->device_id = flash_read_uchar (info,
- FLASH_OFFSET_DEVICE_ID);
- if (info->device_id == 0x7E) {
- /* AMD 3-byte (expanded) device ids */
- info->device_id2 = flash_read_uchar (info,
- FLASH_OFFSET_DEVICE_ID2);
- info->device_id2 <<= 8;
- info->device_id2 |= flash_read_uchar (info,
- FLASH_OFFSET_DEVICE_ID3);
- }
- flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
- break;
- default:
- break;
- }
-}
-
-/*-----------------------------------------------------------------------
- * detect if flash is compatible with the Common Flash Interface (CFI)
- * http://www.jedec.org/download/search/jesd68.pdf
- *
-*/
-static int flash_detect_cfi (flash_info_t * info)
-{
- int cfi_offset;
- debug ("flash detect cfi\n");
-
- for (info->portwidth = CFG_FLASH_CFI_WIDTH;
- info->portwidth <= FLASH_CFI_64BIT; info->portwidth <<= 1) {
- for (info->chipwidth = FLASH_CFI_BY8;
- info->chipwidth <= info->portwidth;
- info->chipwidth <<= 1) {
- flash_write_cmd (info, 0, 0, info->cmd_reset);
- for (cfi_offset=0; cfi_offset < sizeof(flash_offset_cfi)/sizeof(uint); cfi_offset++) {
- flash_write_cmd (info, 0, flash_offset_cfi[cfi_offset], FLASH_CMD_CFI);
- if (flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP, 'Q')
- && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 1, 'R')
- && flash_isequal (info, 0, FLASH_OFFSET_CFI_RESP + 2, 'Y')) {
- info->interface = flash_read_ushort (info, 0, FLASH_OFFSET_INTERFACE);
- info->cfi_offset=flash_offset_cfi[cfi_offset];
- debug ("device interface is %d\n",
- info->interface);
- debug ("found port %d chip %d ",
- info->portwidth, info->chipwidth);
- debug ("port %d bits chip %d bits\n",
- info->portwidth << CFI_FLASH_SHIFT_WIDTH,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- return 1;
- }
- }
- }
- }
- debug ("not found\n");
- return 0;
-}
-
-/*
- * The following code cannot be run from FLASH!
- *
- */
-ulong flash_get_size (ulong base, int banknum)
-{
- flash_info_t *info = &flash_info[banknum];
- int i, j;
- flash_sect_t sect_cnt;
- unsigned long sector;
- unsigned long tmp;
- int size_ratio;
- uchar num_erase_regions;
- int erase_region_size;
- int erase_region_count;
- int geometry_reversed = 0;
-
- info->ext_addr = 0;
- info->cfi_version = 0;
-#ifdef CFG_FLASH_PROTECTION
- info->legacy_unlock = 0;
-#endif
-
- info->start[0] = base;
-
- if (flash_detect_cfi (info)) {
- info->vendor = flash_read_ushort (info, 0,
- FLASH_OFFSET_PRIMARY_VENDOR);
- flash_read_jedec_ids (info);
- flash_write_cmd (info, 0, info->cfi_offset, FLASH_CMD_CFI);
- num_erase_regions = flash_read_uchar (info,
- FLASH_OFFSET_NUM_ERASE_REGIONS);
- info->ext_addr = flash_read_ushort (info, 0,
- FLASH_OFFSET_EXT_QUERY_T_P_ADDR);
- if (info->ext_addr) {
- info->cfi_version = (ushort) flash_read_uchar (info,
- info->ext_addr + 3) << 8;
- info->cfi_version |= (ushort) flash_read_uchar (info,
- info->ext_addr + 4);
- }
-#ifdef DEBUG
- flash_printqry (info, 0);
-#endif
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- case CFI_CMDSET_INTEL_EXTENDED:
- default:
- info->cmd_reset = FLASH_CMD_RESET;
-#ifdef CFG_FLASH_PROTECTION
- /* read legacy lock/unlock bit from intel flash */
- if (info->ext_addr) {
- info->legacy_unlock = flash_read_uchar (info,
- info->ext_addr + 5) & 0x08;
- }
-#endif
- break;
- case CFI_CMDSET_AMD_STANDARD:
- case CFI_CMDSET_AMD_EXTENDED:
- info->cmd_reset = AMD_CMD_RESET;
- /* check if flash geometry needs reversal */
- if (num_erase_regions <= 1)
- break;
- /* reverse geometry if top boot part */
- if (info->cfi_version < 0x3131) {
- /* CFI < 1.1, try to guess from device id */
- if ((info->device_id & 0x80) != 0) {
- geometry_reversed = 1;
- }
- break;
- }
- /* CFI >= 1.1, deduct from top/bottom flag */
- /* note: ext_addr is valid since cfi_version > 0 */
- if (flash_read_uchar(info, info->ext_addr + 0xf) == 3) {
- geometry_reversed = 1;
- }
- break;
- }
-
- debug ("manufacturer is %d\n", info->vendor);
- debug ("manufacturer id is 0x%x\n", info->manufacturer_id);
- debug ("device id is 0x%x\n", info->device_id);
- debug ("device id2 is 0x%x\n", info->device_id2);
- debug ("cfi version is 0x%04x\n", info->cfi_version);
-
- size_ratio = info->portwidth / info->chipwidth;
- /* if the chip is x8/x16 reduce the ratio by half */
- if ((info->interface == FLASH_CFI_X8X16)
- && (info->chipwidth == FLASH_CFI_BY8)) {
- size_ratio >>= 1;
- }
- debug ("size_ratio %d port %d bits chip %d bits\n",
- size_ratio, info->portwidth << CFI_FLASH_SHIFT_WIDTH,
- info->chipwidth << CFI_FLASH_SHIFT_WIDTH);
- debug ("found %d erase regions\n", num_erase_regions);
- sect_cnt = 0;
- sector = base;
- for (i = 0; i < num_erase_regions; i++) {
- if (i > NUM_ERASE_REGIONS) {
- printf ("%d erase regions found, only %d used\n",
- num_erase_regions, NUM_ERASE_REGIONS);
- break;
- }
- if (geometry_reversed)
- tmp = flash_read_long (info, 0,
- FLASH_OFFSET_ERASE_REGIONS +
- (num_erase_regions - 1 - i) * 4);
- else
- tmp = flash_read_long (info, 0,
- FLASH_OFFSET_ERASE_REGIONS +
- i * 4);
- erase_region_size =
- (tmp & 0xffff) ? ((tmp & 0xffff) * 256) : 128;
- tmp >>= 16;
- erase_region_count = (tmp & 0xffff) + 1;
- debug ("erase_region_count = %d erase_region_size = %d\n",
- erase_region_count, erase_region_size);
- for (j = 0; j < erase_region_count; j++) {
- info->start[sect_cnt] = sector;
- sector += (erase_region_size * size_ratio);
-
- /*
- * Only read protection status from supported devices (intel...)
- */
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_EXTENDED:
- case CFI_CMDSET_INTEL_STANDARD:
- info->protect[sect_cnt] =
- flash_isset (info, sect_cnt,
- FLASH_OFFSET_PROTECT,
- FLASH_STATUS_PROTECT);
- break;
- default:
- info->protect[sect_cnt] = 0; /* default: not protected */
- }
-
- sect_cnt++;
- }
- }
-
- info->sector_count = sect_cnt;
- /* multiply the size by the number of chips */
- info->size = (1 << flash_read_uchar (info, FLASH_OFFSET_SIZE)) * size_ratio;
- info->buffer_size = (1 << flash_read_ushort (info, 0, FLASH_OFFSET_BUFFER_SIZE));
- tmp = 1 << flash_read_uchar (info, FLASH_OFFSET_ETOUT);
- info->erase_blk_tout = (tmp * (1 << flash_read_uchar (info, FLASH_OFFSET_EMAX_TOUT)));
- tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WBTOUT)) *
- (1 << flash_read_uchar (info, FLASH_OFFSET_WBMAX_TOUT));
- info->buffer_write_tout = tmp / 1000 + (tmp % 1000 ? 1 : 0); /* round up when converting to ms */
- tmp = (1 << flash_read_uchar (info, FLASH_OFFSET_WTOUT)) *
- (1 << flash_read_uchar (info, FLASH_OFFSET_WMAX_TOUT));
- info->write_tout = tmp / 1000 + (tmp % 1000 ? 1 : 0); /* round up when converting to ms */
- info->flash_id = FLASH_MAN_CFI;
- if ((info->interface == FLASH_CFI_X8X16) && (info->chipwidth == FLASH_CFI_BY8)) {
- info->portwidth >>= 1; /* XXX - Need to test on x8/x16 in parallel. */
- }
- }
-
- flash_write_cmd (info, 0, 0, info->cmd_reset);
- return (info->size);
-}
-
-/* loop through the sectors from the highest address
- * when the passed address is greater or equal to the sector address
- * we have a match
- */
-static flash_sect_t find_sector (flash_info_t * info, ulong addr)
-{
- flash_sect_t sector;
-
- for (sector = info->sector_count - 1; sector >= 0; sector--) {
- if (addr >= info->start[sector])
- break;
- }
- return sector;
-}
-
-/*-----------------------------------------------------------------------
- */
-static int flash_write_cfiword (flash_info_t * info, ulong dest,
- cfiword_t cword)
-{
- cfiptr_t ctladdr;
- cfiptr_t cptr;
- int flag;
-
- ctladdr.cp = flash_make_addr (info, 0, 0);
- cptr.cp = (uchar *) dest;
-
- /* Check if Flash is (sufficiently) erased */
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- flag = ((cptr.cp[0] & cword.c) == cword.c);
- break;
- case FLASH_CFI_16BIT:
- flag = ((cptr.wp[0] & cword.w) == cword.w);
- break;
- case FLASH_CFI_32BIT:
- flag = ((cptr.lp[0] & cword.l) == cword.l);
- break;
- case FLASH_CFI_64BIT:
- flag = ((cptr.llp[0] & cword.ll) == cword.ll);
- break;
- default:
- return 2;
- }
- if (!flag)
- return 2;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts ();
-
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_EXTENDED:
- case CFI_CMDSET_INTEL_STANDARD:
- flash_write_cmd (info, 0, 0, FLASH_CMD_CLEAR_STATUS);
- flash_write_cmd (info, 0, 0, FLASH_CMD_WRITE);
- break;
- case CFI_CMDSET_AMD_EXTENDED:
- case CFI_CMDSET_AMD_STANDARD:
- flash_unlock_seq (info, 0);
- flash_write_cmd (info, 0, AMD_ADDR_START, AMD_CMD_WRITE);
- break;
- }
-
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- cptr.cp[0] = cword.c;
- break;
- case FLASH_CFI_16BIT:
- cptr.wp[0] = cword.w;
- break;
- case FLASH_CFI_32BIT:
- cptr.lp[0] = cword.l;
- break;
- case FLASH_CFI_64BIT:
- cptr.llp[0] = cword.ll;
- break;
- }
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts ();
-
- return flash_full_status_check (info, find_sector (info, dest),
- info->write_tout, "write");
-}
-
-#ifdef CFG_FLASH_USE_BUFFER_WRITE
-
-static int flash_write_cfibuffer (flash_info_t * info, ulong dest, uchar * cp,
- int len)
-{
- flash_sect_t sector;
- int cnt;
- int retcode;
- volatile cfiptr_t src;
- volatile cfiptr_t dst;
-
- switch (info->vendor) {
- case CFI_CMDSET_INTEL_STANDARD:
- case CFI_CMDSET_INTEL_EXTENDED:
- src.cp = cp;
- dst.cp = (uchar *) dest;
- sector = find_sector (info, dest);
- flash_write_cmd (info, sector, 0, FLASH_CMD_CLEAR_STATUS);
- flash_write_cmd (info, sector, 0, FLASH_CMD_WRITE_TO_BUFFER);
- if ((retcode = flash_status_check (info, sector, info->buffer_write_tout,
- "write to buffer")) == ERR_OK) {
- /* reduce the number of loops by the width of the port */
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- cnt = len;
- break;
- case FLASH_CFI_16BIT:
- cnt = len >> 1;
- break;
- case FLASH_CFI_32BIT:
- cnt = len >> 2;
- break;
- case FLASH_CFI_64BIT:
- cnt = len >> 3;
- break;
- default:
- return ERR_INVAL;
- break;
- }
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) {
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- *dst.cp++ = *src.cp++;
- break;
- case FLASH_CFI_16BIT:
- *dst.wp++ = *src.wp++;
- break;
- case FLASH_CFI_32BIT:
- *dst.lp++ = *src.lp++;
- break;
- case FLASH_CFI_64BIT:
- *dst.llp++ = *src.llp++;
- break;
- default:
- return ERR_INVAL;
- break;
- }
- }
- flash_write_cmd (info, sector, 0,
- FLASH_CMD_WRITE_BUFFER_CONFIRM);
- retcode = flash_full_status_check (info, sector,
- info->buffer_write_tout,
- "buffer write");
- }
- return retcode;
-
- case CFI_CMDSET_AMD_STANDARD:
- case CFI_CMDSET_AMD_EXTENDED:
- src.cp = cp;
- dst.cp = (uchar *) dest;
- sector = find_sector (info, dest);
-
- flash_unlock_seq(info,0);
- flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_TO_BUFFER);
-
- switch (info->portwidth) {
- case FLASH_CFI_8BIT:
- cnt = len;
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) *dst.cp++ = *src.cp++;
- break;
- case FLASH_CFI_16BIT:
- cnt = len >> 1;
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) *dst.wp++ = *src.wp++;
- break;
- case FLASH_CFI_32BIT:
- cnt = len >> 2;
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) *dst.lp++ = *src.lp++;
- break;
- case FLASH_CFI_64BIT:
- cnt = len >> 3;
- flash_write_cmd (info, sector, 0, (uchar) cnt - 1);
- while (cnt-- > 0) *dst.llp++ = *src.llp++;
- break;
- default:
- return ERR_INVAL;
- }
-
- flash_write_cmd (info, sector, 0, AMD_CMD_WRITE_BUFFER_CONFIRM);
- retcode = flash_full_status_check (info, sector, info->buffer_write_tout,
- "buffer write");
- return retcode;
-
- default:
- debug ("Unknown Command Set\n");
- return ERR_INVAL;
- }
-}
-#endif /* CFG_FLASH_USE_BUFFER_WRITE */
-
-#endif /* CFG_FLASH_CFI */