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Diffstat (limited to 'board/emk/top5200/flash.c')
-rw-r--r--board/emk/top5200/flash.c502
1 files changed, 0 insertions, 502 deletions
diff --git a/board/emk/top5200/flash.c b/board/emk/top5200/flash.c
deleted file mode 100644
index 216bce3a884..00000000000
--- a/board/emk/top5200/flash.c
+++ /dev/null
@@ -1,502 +0,0 @@
-/*
- * (C) Copyright 2003
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2003
- * Reinhard Meyer, EMK Elektronik GmbH, r.meyer@emk-elektronik.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>
-
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-typedef unsigned char FLASH_PORT_WIDTH;
-typedef volatile unsigned char FLASH_PORT_WIDTHV;
-#define FLASH_ID_MASK 0xFF
-
-#define FPW FLASH_PORT_WIDTH
-#define FPWV FLASH_PORT_WIDTHV
-
-#define FLASH_CYCLE1 0x0aaa
-#define FLASH_CYCLE2 0x0555
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static ulong flash_get_size(FPWV *addr, flash_info_t *info);
-static void flash_reset(flash_info_t *info);
-static int write_word_amd(flash_info_t *info, FPWV *dest, FPW data);
-static flash_info_t *flash_get_info(ulong base);
-
-/*-----------------------------------------------------------------------
- * flash_init()
- *
- * sets up flash_info and returns size of FLASH (bytes)
- */
-unsigned long flash_init (void)
-{
- unsigned long size = 0;
- int i = 0;
- extern void flash_preinit(void);
- extern void flash_afterinit(uint, ulong, ulong);
- ulong flashbase = CFG_FLASH_BASE;
-
- flash_preinit();
-
- /* There is only ONE FLASH device */
- memset(&flash_info[i], 0, sizeof(flash_info_t));
- flash_info[i].size =
- flash_get_size((FPW *)flashbase, &flash_info[i]);
- size += flash_info[i].size;
-
-#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_get_info(CFG_MONITOR_BASE));
-#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_get_info(CFG_ENV_ADDR));
-#endif
-
-
- flash_afterinit(i, flash_info[i].start[0], flash_info[i].size);
- return size ? size : 1;
-}
-
-/*-----------------------------------------------------------------------
- */
-static void flash_reset(flash_info_t *info)
-{
- FPWV *base = (FPWV *)(info->start[0]);
-
- /* Put FLASH back in read mode */
- if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL)
- *base = (FPW)0x00FF00FF; /* Intel Read Mode */
- else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD)
- *base = (FPW)0x00F000F0; /* AMD Read Mode */
-}
-
-/*-----------------------------------------------------------------------
- */
-
-static flash_info_t *flash_get_info(ulong base)
-{
- int i;
- flash_info_t * info;
-
- 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;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-void flash_print_info (flash_info_t *info)
-{
- int i;
- uchar *boottype;
- uchar *bootletter;
- uchar *fmt;
- uchar botbootletter[] = "B";
- uchar topbootletter[] = "T";
- uchar botboottype[] = "bottom boot sector";
- uchar topboottype[] = "top boot sector";
-
- 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;
-#if 0
- case FLASH_MAN_BM: printf ("BRIGHT MICRO "); break;
- case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
- case FLASH_MAN_SST: printf ("SST "); break;
- case FLASH_MAN_STM: printf ("STM "); break;
- case FLASH_MAN_INTEL: printf ("INTEL "); break;
-#endif
- default: printf ("Unknown Vendor "); break;
- }
-
- /* check for top or bottom boot, if it applies */
- if (info->flash_id & FLASH_BTYPE) {
- boottype = botboottype;
- bootletter = botbootletter;
- }
- else {
- boottype = topboottype;
- bootletter = topbootletter;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AM160T:
- case FLASH_AM160B:
- fmt = "29LV160%s (16 Mbit, %s)\n";
- break;
- case FLASH_AMDLV065D:
- fmt = "29LV065 (64 Mbit, uniform sectors)\n";
- break;
- default:
- fmt = "Unknown Chip Type\n";
- break;
- }
-
- printf (fmt, bootletter, boottype);
-
- 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");
-}
-
-/*-----------------------------------------------------------------------
- */
-
-/*
- * The following code cannot be run from FLASH!
- */
-
-ulong flash_get_size (FPWV *addr, flash_info_t *info)
-{
- int i;
- ulong offset;
-
- /* Write auto select command: read Manufacturer ID */
- /* Write auto select command sequence and test FLASH answer */
- addr[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* for AMD, Intel ignores this */
- addr[FLASH_CYCLE2] = (FPW)0x00550055; /* for AMD, Intel ignores this */
- addr[FLASH_CYCLE1] = (FPW)0x00900090; /* selects Intel or AMD */
-
- /* The manufacturer codes are only 1 byte, so just use 1 byte.
- * This works for any bus width and any FLASH device width.
- */
- udelay(100);
- switch (addr[0] & 0xff) {
-
- case (uchar)AMD_MANUFACT:
- info->flash_id = FLASH_MAN_AMD;
- break;
-
-#if 0
- case (uchar)INTEL_MANUFACT:
- info->flash_id = FLASH_MAN_INTEL;
- break;
-#endif
-
- default:
- printf ("unknown vendor=%x ", addr[0] & 0xff);
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- break;
- }
-
- /* Check 16 bits or 32 bits of ID so work on 32 or 16 bit bus. */
- if (info->flash_id != FLASH_UNKNOWN) switch ((FPW)addr[2]) {
-
- case (FPW)AMD_ID_LV160B:
- info->flash_id += FLASH_AM160B;
- info->sector_count = 35;
- info->size = 0x00200000;
-#ifdef CFG_LOWBOOT
- offset = 0;
-#else
- offset = 0x00e00000;
-#endif
- info->start[0] = (ulong)addr + offset;
- info->start[1] = (ulong)addr + offset + 0x4000;
- info->start[2] = (ulong)addr + offset + 0x6000;
- info->start[3] = (ulong)addr + offset + 0x8000;
- for (i = 4; i < info->sector_count; i++)
- {
- info->start[i] = (ulong)addr + offset + 0x10000 * (i-3);
- }
- break;
-
- case (FPW)AMD_ID_LV065D:
- info->flash_id += FLASH_AMDLV065D;
- info->sector_count = 128;
- info->size = 0x00800000;
-#ifdef CFG_LOWBOOT
- offset = 0;
-#else
- offset = 0x00800000;
-#endif
- for( i = 0; i < info->sector_count; i++ )
- info->start[i] = (ulong)addr + offset + (i * 0x10000);
- break; /* => 8 or 16 MB */
-
- default:
- printf ("unknown AMD device=%x ", (FPW)addr[2]);
- info->flash_id = FLASH_UNKNOWN;
- info->sector_count = 0;
- info->size = 0;
- return (0); /* => no or unknown flash */
- }
-
- /* Put FLASH back in read mode */
- flash_reset(info);
-
- return (info->size);
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- FPWV *addr;
- int flag, prot, sect;
- int intel = (info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL;
- ulong start, now, 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;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_AMDLV065D:
- break;
- case FLASH_UNKNOWN:
- default:
- 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");
- }
-
- last = get_timer(0);
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last && rcode == 0; sect++) {
-
- if (info->protect[sect] != 0) /* protected, skip it */
- continue;
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- addr = (FPWV *)(info->start[sect]);
- if (intel) {
- *addr = (FPW)0x00500050; /* clear status register */
- *addr = (FPW)0x00200020; /* erase setup */
- *addr = (FPW)0x00D000D0; /* erase confirm */
- }
- else {
- /* must be AMD style if not Intel */
- FPWV *base; /* first address in bank */
-
- base = (FPWV *)(info->start[0]);
- base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
- base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
- base[FLASH_CYCLE1] = (FPW)0x00800080; /* erase mode */
- base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
- base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
- *addr = (FPW)0x00300030; /* erase sector */
- }
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- start = get_timer(0);
-
- /* wait at least 50us for AMD, 80us for Intel.
- * Let's wait 1 ms.
- */
- udelay (1000);
-
- while ((*addr & (FPW)0x00800080) != (FPW)0x00800080) {
- if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
-
- if (intel) {
- /* suspend erase */
- *addr = (FPW)0x00B000B0;
- }
-
- flash_reset(info); /* reset to read mode */
- rcode = 1; /* failed */
- break;
- }
-
- /* show that we're waiting */
- if ((get_timer(last)) > CFG_HZ) {/* every second */
- putc ('.');
- last = get_timer(0);
- }
- }
-
- /* show that we're waiting */
- if ((get_timer(last)) > CFG_HZ) { /* every second */
- putc ('.');
- last = get_timer(0);
- }
-
- flash_reset(info); /* reset to read mode */
- }
-
- printf (" done\n");
- return rcode;
-}
-
-/*-----------------------------------------------------------------------
- * 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)
-{
- FPW data = 0; /* 16 or 32 bit word, matches flash bus width on MPC8XX */
- int bytes; /* number of bytes to program in current word */
- int left; /* number of bytes left to program */
- int i, res;
-
- for (left = cnt, res = 0;
- left > 0 && res == 0;
- addr += sizeof(data), left -= sizeof(data) - bytes) {
-
- bytes = addr & (sizeof(data) - 1);
- addr &= ~(sizeof(data) - 1);
-
- /* combine source and destination data so can program
- * an entire word of 16 or 32 bits
- */
- for (i = 0; i < sizeof(data); i++) {
- data <<= 8;
- if (i < bytes || i - bytes >= left )
- data += *((uchar *)addr + i);
- else
- data += *src++;
- }
-
- /* write one word to the flash */
- switch (info->flash_id & FLASH_VENDMASK) {
- case FLASH_MAN_AMD:
- res = write_word_amd(info, (FPWV *)addr, data);
- break;
- default:
- /* unknown flash type, error! */
- printf ("missing or unknown FLASH type\n");
- res = 1; /* not really a timeout, but gives error */
- break;
- }
- }
-
- return (res);
-}
-
-/*-----------------------------------------------------------------------
- * Write a word to Flash for AMD FLASH
- * A word is 16 or 32 bits, whichever the bus width of the flash bank
- * (not an individual chip) is.
- *
- * returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int write_word_amd (flash_info_t *info, FPWV *dest, FPW data)
-{
- ulong start;
- int flag;
- int res = 0; /* result, assume success */
- FPWV *base; /* first address in flash bank */
-
- /* Check if Flash is (sufficiently) erased */
- if ((*dest & data) != data) {
- return (2);
- }
-
-
- base = (FPWV *)(info->start[0]);
-
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
- base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
- base[FLASH_CYCLE1] = (FPW)0x00A000A0; /* selects program mode */
-
- *dest = data; /* start programming the data */
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- start = get_timer (0);
-
- /* data polling for D7 */
- while (res == 0 && (*dest & (FPW)0x00800080) != (data & (FPW)0x00800080)) {
- if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
- *dest = (FPW)0x00F000F0; /* reset bank */
- res = 1;
- }
- }
-
- return (res);
-}
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