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-rw-r--r--board/oxc/flash.c372
1 files changed, 0 insertions, 372 deletions
diff --git a/board/oxc/flash.c b/board/oxc/flash.c
deleted file mode 100644
index 36e0fca..0000000
--- a/board/oxc/flash.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * (C) Copyright 2000
- * Marius Groeger <mgroeger@sysgo.de>
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- *
- * (C) Copyright 2000
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * Flash Routines for STM29W320DB/STM29W800D flash chips
- *
- *--------------------------------------------------------------------
- * 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>
-#include <mpc8xx.h>
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-
-static ulong flash_get_size (vu_char *addr, flash_info_t *info);
-static int write_byte (flash_info_t *info, ulong dest, uchar data);
-
-/*-----------------------------------------------------------------------
- */
-
-unsigned long flash_init (void)
-{
- unsigned long size;
- int i;
-
- /* Init: no FLASHes known */
- for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
- flash_info[i].flash_id = FLASH_UNKNOWN;
- }
-
- /*
- * We use the following trick here: since flash is cyclically
- * mapped in the 0xFF800000-0xFFFFFFFF area, we detect the type
- * and the size of flash using 0xFF800000 as the base address,
- * and then call flash_get_size() again to fill flash_info.
- */
- size = flash_get_size((vu_char *)CONFIG_SYS_FLASH_PRELIMBASE, &flash_info[0]);
- if (size)
- {
- flash_get_size((vu_char *)(-size), &flash_info[0]);
- }
-
-#if (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_PRELIMBASE)
- /* monitor protection ON by default */
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_MONITOR_BASE,
- CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
- &flash_info[0]);
-#endif
-
-#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
-# ifndef CONFIG_ENV_SIZE
-# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
-# endif
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
- &flash_info[0]);
-#endif
-
- return (size);
-}
-
-/*-----------------------------------------------------------------------
- */
-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_STM:
- printf ("ST ");
- break;
- default:
- printf ("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case FLASH_STM320DB:
- printf ("M29W320DB (32 Mbit)\n");
- break;
- case FLASH_STM800DB:
- printf ("M29W800DB (8 Mbit, bottom boot block)\n");
- break;
- case FLASH_STM800DT:
- printf ("M29W800DT (8 Mbit, top boot block)\n");
- break;
- default:
- printf ("Unknown Chip Type\n");
- break;
- }
-
- 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");
- return;
-}
-
-/*
- * The following code cannot be run from FLASH!
- */
-
-static ulong flash_get_size (vu_char *addr, flash_info_t *info)
-{
- short i;
- uchar vendor, devid;
- ulong base = (ulong)addr;
-
- /* Write auto select command: read Manufacturer ID */
- addr[0x0AAA] = 0xAA;
- addr[0x0555] = 0x55;
- addr[0x0AAA] = 0x90;
-
- udelay(1000);
-
- vendor = addr[0];
- devid = addr[2];
-
- /* only support STM */
- if ((vendor << 16) != FLASH_MAN_STM) {
- return 0;
- }
-
- if (devid == FLASH_STM320DB) {
- /* MPC8240 can address maximum 2Mb of flash, that is why the MSB
- * lead is grounded and we can access only 2 first Mb */
- info->flash_id = vendor << 16 | devid;
- info->sector_count = 32;
- info->size = info->sector_count * 0x10000;
- for (i = 0; i < info->sector_count; i++) {
- info->start[i] = base + i * 0x10000;
- }
- }
- else if (devid == FLASH_STM800DB) {
- info->flash_id = vendor << 16 | devid;
- info->sector_count = 19;
- info->size = 0x100000;
- info->start[0] = 0x0000;
- info->start[1] = 0x4000;
- info->start[2] = 0x6000;
- info->start[3] = 0x8000;
- for (i = 4; i < info->sector_count; i++) {
- info->start[i] = base + (i-3) * 0x10000;
- }
- }
- else if (devid == FLASH_STM800DT) {
- info->flash_id = vendor << 16 | devid;
- info->sector_count = 19;
- info->size = 0x100000;
- for (i = 0; i < info->sector_count-4; i++) {
- info->start[i] = base + i * 0x10000;
- }
- info->start[i] = base + i * 0x10000;
- info->start[i+1] = base + i * 0x10000 + 0x8000;
- info->start[i+2] = base + i * 0x10000 + 0xa000;
- info->start[i+3] = base + i * 0x10000 + 0xc000;
- }
- else {
- return 0;
- }
-
- /* mark all sectors as unprotected */
- for (i = 0; i < info->sector_count; i++) {
- info->protect[i] = 0;
- }
-
- /* Issue the reset command */
- if (info->flash_id != FLASH_UNKNOWN) {
- addr[0] = 0xF0; /* reset bank */
- }
-
- return (info->size);
-}
-
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t *info, int s_first, int s_last)
-{
- vu_char *addr = (vu_char *)(info->start[0]);
- int flag, prot, sect, l_sect;
- ulong start, now, last;
-
- 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;
- }
-
- 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();
-
- addr[0x0AAA] = 0xAA;
- addr[0x0555] = 0x55;
- addr[0x0AAA] = 0x80;
- addr[0x0AAA] = 0xAA;
- addr[0x0555] = 0x55;
-
- /* wait at least 80us - let's wait 1 ms */
- udelay (1000);
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last; sect++) {
- if (info->protect[sect] == 0) { /* not protected */
- addr = (vu_char *)(info->start[sect]);
- addr[0] = 0x30;
- l_sect = sect;
- }
- }
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- /* wait at least 80us - let's wait 1 ms */
- udelay (1000);
-
- /*
- * We wait for the last triggered sector
- */
- if (l_sect < 0)
- goto DONE;
-
- start = get_timer (0);
- last = start;
- addr = (vu_char *)(info->start[l_sect]);
- while ((addr[0] & 0x80) != 0x80) {
- if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- printf ("Timeout\n");
- return 1;
- }
- /* show that we're waiting */
- if ((now - last) > 1000) { /* every second */
- serial_putc ('.');
- last = now;
- }
- }
-
- DONE:
- /* reset to read mode */
- addr = (volatile unsigned char *)info->start[0];
- addr[0] = 0xF0; /* reset bank */
-
- printf (" done\n");
- return 0;
-}
-
-/*-----------------------------------------------------------------------
- * 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)
-{
- int rc;
-
- while (cnt > 0) {
- if ((rc = write_byte(info, addr, *src)) != 0) {
- return (rc);
- }
- addr++;
- src++;
- cnt--;
- }
-
- return (0);
-}
-
-/*-----------------------------------------------------------------------
- * Write a byte to Flash, returns:
- * 0 - OK
- * 1 - write timeout
- * 2 - Flash not erased
- */
-static int write_byte (flash_info_t *info, ulong dest, uchar data)
-{
- vu_char *addr = (vu_char *)(info->start[0]);
- ulong start;
- int flag;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*((vu_char *)dest) & data) != data) {
- return (2);
- }
- /* Disable interrupts which might cause a timeout here */
- flag = disable_interrupts();
-
- addr[0x0AAA] = 0xAA;
- addr[0x0555] = 0x55;
- addr[0x0AAA] = 0xA0;
-
- *((vu_char *)dest) = data;
-
- /* re-enable interrupts if necessary */
- if (flag)
- enable_interrupts();
-
- /* data polling for D7 */
- start = get_timer (0);
- while ((*((vu_char *)dest) & 0x80) != (data & 0x80)) {
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- return (1);
- }
- }
- return (0);
-}
-
-/*-----------------------------------------------------------------------
- */
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