aboutsummaryrefslogtreecommitdiff
path: root/board/mousse
diff options
context:
space:
mode:
authorwdenk <wdenk>2002-11-02 22:58:18 +0000
committerwdenk <wdenk>2002-11-02 22:58:18 +0000
commitcc1c8a136f9813d0a9cb9a94d2f12206873ddc4e (patch)
tree912691be4a212b399eb470411acd27c8bb6375da /board/mousse
parent1a4d6164af8f79c0979a2af45d7f5e5353562b19 (diff)
downloadu-boot-linaro-stable-cc1c8a136f9813d0a9cb9a94d2f12206873ddc4e.tar.gz
Initial revision
Diffstat (limited to 'board/mousse')
-rw-r--r--board/mousse/flash.c944
-rw-r--r--board/mousse/m48t59y.c323
2 files changed, 1267 insertions, 0 deletions
diff --git a/board/mousse/flash.c b/board/mousse/flash.c
new file mode 100644
index 000000000..3c4a802da
--- /dev/null
+++ b/board/mousse/flash.c
@@ -0,0 +1,944 @@
+/*
+ * MOUSSE/MPC8240 Board definitions.
+ * Flash Routines for MOUSSE onboard AMD29LV106DB devices
+ *
+ * (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.
+ *
+ * (C) Copyright 1999, by Curt McDowell, 08-06-99, Broadcom Corp.
+ * (C) Copyright 2001, James Dougherty, 07/18/01, Broadcom Corp.
+ *
+ * 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>
+#include <malloc.h>
+#include "mousse.h"
+#include "flash.h"
+
+int flashLibDebug = 0;
+int flashLibInited = 0;
+
+#define OK 0
+#define ERROR -1
+#define STATUS int
+#define PRINTF if (flashLibDebug) printf
+#if 0
+#define PRIVATE static
+#else
+#define PRIVATE
+#endif
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+#define SLEEP_DELAY 166
+#define FLASH_SECTOR_SIZE (64*1024)
+/***********************************************************************
+ *
+ * Virtual Flash Devices on Mousse board
+ *
+ * These must be kept in sync with the definitions in flashLib.h.
+ *
+ ***********************************************************************/
+
+PRIVATE flash_dev_t flashDev[] = {
+ /* Bank 0 sector SA0 (16 kB) */
+ { "SA0",FLASH0_BANK, FLASH0_SEG0_START, 1, 14,
+ FLASH0_VENDOR_ID, FLASH0_DEVICE_ID
+ },
+ /* Bank 0 sector SA1 (8 kB) */
+ { "SA1", FLASH0_BANK, FLASH0_SEG0_START + 0x4000, 1, 13,
+ FLASH0_VENDOR_ID, FLASH0_DEVICE_ID
+ },
+ /* Bank 0 sector SA2 (8 kB) */
+ { "SA2", FLASH0_BANK, FLASH0_SEG0_START + 0x6000, 1, 13,
+ FLASH0_VENDOR_ID, FLASH0_DEVICE_ID
+ },
+ /* Bank 0 sector SA3 is occluded by Mousse I/O devices */
+ /* Bank 0 sectors SA4-SA18, after Mousse devices up to PLCC (960 kB) */
+ { "KERNEL", FLASH0_BANK, FLASH0_SEG1_START, 15, 16,
+ FLASH0_VENDOR_ID, FLASH0_DEVICE_ID
+ },
+ /* Bank 0 sectors SA19-SA26, jumper can occlude this by PLCC (512 kB) */
+ /* This is where the Kahlua boot vector and boot ROM code resides. */
+ { "BOOT",FLASH0_BANK, FLASH0_SEG2_START, 8, 16,
+ FLASH0_VENDOR_ID, FLASH0_DEVICE_ID
+ },
+ /* Bank 0 sectors SA27-SA34 (512 kB) */
+ { "RAMDISK",FLASH0_BANK, FLASH0_SEG3_START, 8, 16,
+ FLASH0_VENDOR_ID, FLASH0_DEVICE_ID
+ },
+};
+
+int flashDevCount = (sizeof (flashDev) / sizeof (flashDev[0]));
+
+#define DEV(no) (&flashDev[no])
+#define DEV_NO(dev) ((dev) - flashDev)
+
+/***********************************************************************
+ *
+ * Private Flash Routines
+ *
+ ***********************************************************************/
+
+/*
+ * The convention is:
+ *
+ * "addr" is always the PROM raw address, which is the address of an
+ * 8-bit quantity for flash 0 and 16-bit quantity for flash 1.
+ *
+ * "pos" is always a logical byte position from the PROM beginning.
+ */
+
+#define FLASH0_ADDR(dev, addr) \
+ ((unsigned char *) ((dev)->base + (addr)))
+
+#define FLASH0_WRITE(dev, addr, value) \
+ (*FLASH0_ADDR(dev, addr) = (value))
+
+#define FLASH0_READ(dev, addr) \
+ (*FLASH0_ADDR(dev, addr))
+
+PRIVATE int flashCheck(flash_dev_t *dev)
+{
+ if (! flashLibInited) {
+ printf("flashCheck: flashLib not initialized\n");
+ return ERROR;
+ }
+
+ if (dev < &flashDev[0] || dev >= &flashDev[flashDevCount]) {
+ printf("flashCheck: Bad dev parameter\n");
+ return ERROR;
+ }
+
+ if (! dev->found) {
+ printf("flashCheck: Device %d not available\n", DEV_NO(dev));
+ return ERROR;
+ }
+
+ return OK;
+}
+
+PRIVATE void flashReset(flash_dev_t *dev)
+{
+ PRINTF("flashReset: dev=%d\n", DEV_NO(dev));
+
+ if (dev->bank == FLASH0_BANK) {
+ FLASH0_WRITE(dev, 0x555, 0xaa);
+ FLASH0_WRITE(dev, 0xaaa, 0x55);
+ FLASH0_WRITE(dev, 0x555, 0xf0);
+ }
+
+ udelay(SLEEP_DELAY);
+
+ PRINTF("flashReset: done\n");
+}
+
+PRIVATE int flashProbe(flash_dev_t *dev)
+{
+ int rv, deviceID, vendorID;
+
+ PRINTF("flashProbe: dev=%d\n", DEV_NO(dev));
+
+ if (dev->bank != FLASH0_BANK) {
+ rv = ERROR;
+ goto DONE;
+ }
+
+ FLASH0_WRITE(dev, 0xaaa, 0xaa);
+ FLASH0_WRITE(dev, 0x555, 0x55);
+ FLASH0_WRITE(dev, 0xaaa, 0x90);
+
+ udelay(SLEEP_DELAY);
+
+ vendorID = FLASH0_READ(dev, 0);
+ deviceID = FLASH0_READ(dev, 2);
+
+ FLASH0_WRITE(dev, 0, 0xf0);
+
+ PRINTF("flashProbe: vendor=0x%x device=0x%x\n", vendorID, deviceID);
+
+ if (vendorID == dev->vendorID && deviceID == dev->deviceID)
+ rv = OK;
+ else
+ rv = ERROR;
+
+DONE:
+ PRINTF("flashProbe: rv=%d\n", rv);
+
+ return rv;
+}
+
+PRIVATE int flashWait(flash_dev_t *dev, int addr, int expect, int erase)
+{
+ int rv = ERROR;
+ int i, data;
+ int polls;
+#if 0
+ PRINTF("flashWait: dev=%d addr=0x%x expect=0x%x erase=%d\n",
+ DEV_NO(dev), addr, expect, erase);
+#endif
+
+ if (dev->bank != FLASH0_BANK) {
+ rv = ERROR;
+ goto done;
+ }
+
+ if (erase)
+ polls = FLASH_ERASE_SECTOR_TIMEOUT; /* Ticks */
+ else
+ polls = FLASH_PROGRAM_POLLS; /* Loops */
+
+ for (i = 0; i < polls; i++) {
+ if (erase)
+ udelay(SLEEP_DELAY);
+
+ data = FLASH0_READ(dev, addr);
+
+ if (((data ^ expect) & 0x80) == 0) {
+ rv = OK;
+ goto done;
+ }
+
+ if (data & 0x20) {
+ /*
+ * If the 0x20 bit has come on, it could actually be because
+ * the operation succeeded, so check the done bit again.
+ */
+
+ data = FLASH0_READ(dev, addr);
+
+ if (((data ^ expect) & 0x80) == 0) {
+ rv = OK;
+ goto done;
+ }
+
+ printf("flashWait: Program error (dev: %d, addr: 0x%x)\n",
+ DEV_NO(dev), addr);
+
+ flashReset(dev);
+ rv = ERROR;
+ goto done;
+ }
+ }
+
+ printf("flashWait: Timeout %s (dev: %d, addr: 0x%x)\n",
+ erase ? "erasing sector" : "programming byte",
+ DEV_NO(dev), addr);
+
+done:
+
+#if 0
+ PRINTF("flashWait: rv=%d\n", rv);
+#endif
+
+ return rv;
+}
+
+/***********************************************************************
+ *
+ * Public Flash Routines
+ *
+ ***********************************************************************/
+
+STATUS flashLibInit(void)
+{
+ int i;
+
+ PRINTF("flashLibInit: devices=%d\n", flashDevCount);
+
+ for (i = 0; i < flashDevCount; i++) {
+ flash_dev_t *dev = &flashDev[i];
+ /*
+ * For bank 1, probe both without and with byte swappage,
+ * so that this module works on both old and new Mousse boards.
+ */
+
+ flashReset(dev);
+
+ if (flashProbe(dev) != ERROR)
+ dev->found = 1;
+
+ flashReset(dev);
+
+ if (flashProbe(dev) != ERROR)
+ dev->found = 1;
+
+ dev->swap = 0;
+
+ if(dev->found){
+ PRINTF("\n FLASH %s[%d]: iobase=0x%x - %d sectors %d KB",
+ flashDev[i].name,i,flashDev[i].base, flashDev[i].sectors,
+ (flashDev[i].sectors * FLASH_SECTOR_SIZE)/1024);
+
+ }
+ }
+
+ flashLibInited = 1;
+
+ PRINTF("flashLibInit: done\n");
+
+ return OK;
+}
+
+STATUS flashEraseSector(flash_dev_t *dev, int sector)
+{
+ int pos, addr;
+
+ PRINTF("flashErasesector: dev=%d sector=%d\n", DEV_NO(dev), sector);
+
+ if (flashCheck(dev) == ERROR)
+ return ERROR;
+
+ if (sector < 0 || sector >= dev->sectors) {
+ printf("flashEraseSector: Sector out of range (dev: %d, sector: %d)\n",
+ DEV_NO(dev), sector);
+ return ERROR;
+ }
+
+ pos = FLASH_SECTOR_POS(dev, sector);
+
+ if (dev->bank != FLASH0_BANK) {
+ return ERROR;
+ }
+
+ addr = pos;
+
+ FLASH0_WRITE(dev, 0xaaa, 0xaa);
+ FLASH0_WRITE(dev, 0x555, 0x55);
+ FLASH0_WRITE(dev, 0xaaa, 0x80);
+ FLASH0_WRITE(dev, 0xaaa, 0xaa);
+ FLASH0_WRITE(dev, 0x555, 0x55);
+ FLASH0_WRITE(dev, addr, 0x30);
+
+ return flashWait(dev, addr, 0xff, 1);
+}
+
+/*
+ * Note: it takes about as long to flash all sectors together with Chip
+ * Erase as it does to flash them one at a time (about 30 seconds for 2
+ * MB). Also since we want to be able to treat subsets of sectors as if
+ * they were complete devices, we don't use Chip Erase.
+ */
+
+STATUS flashErase(flash_dev_t *dev)
+{
+ int sector;
+
+ PRINTF("flashErase: dev=%d sectors=%d\n", DEV_NO(dev), dev->sectors);
+
+ if (flashCheck(dev) == ERROR)
+ return ERROR;
+
+ for (sector = 0; sector < dev->sectors; sector++) {
+ if (flashEraseSector(dev, sector) == ERROR)
+ return ERROR;
+ }
+ return OK;
+}
+
+/*
+ * Read and write bytes
+ */
+
+STATUS flashRead(flash_dev_t *dev, int pos, char *buf, int len)
+{
+ int addr, words;
+
+ PRINTF("flashRead: dev=%d pos=0x%x buf=0x%x len=0x%x\n",
+ DEV_NO(dev), pos, (int) buf, len);
+
+ if (flashCheck(dev) == ERROR)
+ return ERROR;
+
+ if (pos < 0 || len < 0 || pos + len > FLASH_MAX_POS(dev)) {
+ printf("flashRead: Position out of range "
+ "(dev: %d, pos: 0x%x, len: 0x%x)\n",
+ DEV_NO(dev), pos, len);
+ return ERROR;
+ }
+
+ if (len == 0)
+ return OK;
+
+ if (dev->bank == FLASH0_BANK) {
+ addr = pos;
+ words = len;
+
+ PRINTF("flashRead: memcpy(0x%x, 0x%x, 0x%x)\n",
+ (int) buf, (int) FLASH0_ADDR(dev, pos), len);
+
+ memcpy(buf, FLASH0_ADDR(dev, addr), words);
+
+ }
+ PRINTF("flashRead: rv=OK\n");
+
+ return OK;
+}
+
+STATUS flashWrite(flash_dev_t *dev, int pos, char *buf, int len)
+{
+ int addr, words;
+
+ PRINTF("flashWrite: dev=%d pos=0x%x buf=0x%x len=0x%x\n",
+ DEV_NO(dev), pos, (int) buf, len);
+
+ if (flashCheck(dev) == ERROR)
+ return ERROR;
+
+ if (pos < 0 || len < 0 || pos + len > FLASH_MAX_POS(dev)) {
+ printf("flashWrite: Position out of range "
+ "(dev: %d, pos: 0x%x, len: 0x%x)\n",
+ DEV_NO(dev), pos, len);
+ return ERROR;
+ }
+
+ if (len == 0)
+ return OK;
+
+ if (dev->bank == FLASH0_BANK) {
+ unsigned char tmp;
+
+ addr = pos;
+ words = len;
+
+ while (words--) {
+ tmp = *buf;
+ if (~FLASH0_READ(dev, addr) & tmp) {
+ printf("flashWrite: Attempt to program 0 to 1 "
+ "(dev: %d, addr: 0x%x, data: 0x%x)\n",
+ DEV_NO(dev), addr, tmp);
+ return ERROR;
+ }
+ FLASH0_WRITE(dev, 0xaaa, 0xaa);
+ FLASH0_WRITE(dev, 0x555, 0x55);
+ FLASH0_WRITE(dev, 0xaaa, 0xa0);
+ FLASH0_WRITE(dev, addr, tmp);
+ if (flashWait(dev, addr, tmp, 0) < 0)
+ return ERROR;
+ buf++;
+ addr++;
+ }
+ }
+
+ PRINTF("flashWrite: rv=OK\n");
+
+ return OK;
+}
+
+/*
+ * flashWritable returns TRUE if a range contains all F's.
+ */
+
+STATUS flashWritable(flash_dev_t *dev, int pos, int len)
+{
+ int addr, words;
+ int rv = ERROR;
+
+ PRINTF("flashWritable: dev=%d pos=0x%x len=0x%x\n",
+ DEV_NO(dev), pos, len);
+
+ if (flashCheck(dev) == ERROR)
+ goto done;
+
+ if (pos < 0 || len < 0 || pos + len > FLASH_MAX_POS(dev)) {
+ printf("flashWritable: Position out of range "
+ "(dev: %d, pos: 0x%x, len: 0x%x)\n",
+ DEV_NO(dev), pos, len);
+ goto done;
+ }
+
+ if (len == 0) {
+ rv = 1;
+ goto done;
+ }
+
+ if (dev->bank == FLASH0_BANK) {
+ addr = pos;
+ words = len;
+
+ while (words--) {
+ if (FLASH0_READ(dev, addr) != 0xff) {
+ rv = 0;
+ goto done;
+ }
+ addr++;
+ }
+ }
+
+ rv = 1;
+
+ done:
+ PRINTF("flashWrite: rv=%d\n", rv);
+ return rv;
+}
+
+
+/*
+ * NOTE: the below code cannot run from FLASH!!!
+ */
+/***********************************************************************
+ *
+ * Flash Diagnostics
+ *
+ ***********************************************************************/
+
+STATUS flashDiag(flash_dev_t *dev)
+{
+ unsigned int *buf = 0;
+ int i, len, sector;
+ int rv = ERROR;
+
+ if (flashCheck(dev) == ERROR)
+ return ERROR;
+
+ printf("flashDiag: Testing device %d, "
+ "base: 0x%x, %d sectors @ %d kB = %d kB\n",
+ DEV_NO(dev), dev->base,
+ dev->sectors,
+ 1 << (dev->lgSectorSize - 10),
+ dev->sectors << (dev->lgSectorSize - 10));
+
+ len = 1 << dev->lgSectorSize;
+
+ printf("flashDiag: Erasing\n");
+
+ if (flashErase(dev) == ERROR) {
+ printf("flashDiag: Erase failed\n");
+ goto done;
+ }
+ printf("%d bytes requested ...\n", len);
+ buf = malloc(len);
+ printf("allocated %d bytes ...\n", len);
+ if (buf == 0) {
+ printf("flashDiag: Out of memory\n");
+ goto done;
+ }
+
+ /*
+ * Write unique counting pattern to each sector
+ */
+
+ for (sector = 0; sector < dev->sectors; sector++) {
+ printf("flashDiag: Write sector %d\n", sector);
+
+ for (i = 0; i < len / 4; i++)
+ buf[i] = sector << 24 | i;
+
+ if (flashWrite(dev,
+ sector << dev->lgSectorSize,
+ (char *) buf,
+ len) == ERROR) {
+ printf("flashDiag: Write failed (dev: %d, sector: %d)\n",
+ DEV_NO(dev), sector);
+ goto done;
+ }
+ }
+
+ /*
+ * Verify
+ */
+
+ for (sector = 0; sector < dev->sectors; sector++) {
+ printf("flashDiag: Verify sector %d\n", sector);
+
+ if (flashRead(dev,
+ sector << dev->lgSectorSize,
+ (char *) buf,
+ len) == ERROR) {
+ printf("flashDiag: Read failed (dev: %d, sector: %d)\n",
+ DEV_NO(dev), sector);
+ goto done;
+ }
+
+ for (i = 0; i < len / 4; i++) {
+ if (buf[i] != (sector << 24 | i)) {
+ printf("flashDiag: Verify error "
+ "(dev: %d, sector: %d, offset: 0x%x)\n",
+ DEV_NO(dev), sector, i);
+ printf("flashDiag: Expected 0x%08x, got 0x%08x\n",
+ sector << 24 | i, buf[i]);
+
+ goto done;
+ }
+ }
+ }
+
+ printf("flashDiag: Erasing\n");
+
+ if (flashErase(dev) == ERROR) {
+ printf("flashDiag: Final erase failed\n");
+ goto done;
+ }
+
+ rv = OK;
+
+ done:
+ if (buf)
+ free(buf);
+
+ if (rv == OK)
+ printf("flashDiag: Device %d passed\n", DEV_NO(dev));
+ else
+ printf("flashDiag: Device %d failed\n", DEV_NO(dev));
+
+ return rv;
+}
+
+STATUS flashDiagAll(void)
+{
+ int i;
+ int rv = OK;
+
+ PRINTF("flashDiagAll: devices=%d\n", flashDevCount);
+
+ for (i = 0; i < flashDevCount; i++) {
+ flash_dev_t *dev = &flashDev[i];
+
+ if (dev->found && flashDiag(dev) == ERROR)
+ rv = ERROR;
+ }
+
+ if (rv == OK)
+ printf("flashDiagAll: Passed\n");
+ else
+ printf("flashDiagAll: Failed because of earlier errors\n");
+
+ return OK;
+}
+
+
+/*-----------------------------------------------------------------------
+ */
+unsigned long flash_init (void)
+{
+ unsigned long size = 0;
+ flash_dev_t *dev = NULL;
+ flashLibInit();
+
+ /*
+ * Provide info for FLASH (up to 960K) of Kernel Image data.
+ */
+ dev = FLASH_DEV_BANK0_LOW;
+ flash_info[FLASH_BANK_KERNEL].flash_id =
+ (dev->vendorID << 16) | dev->deviceID;
+ flash_info[FLASH_BANK_KERNEL].sector_count = dev->sectors;
+ flash_info[FLASH_BANK_KERNEL].size =
+ flash_info[FLASH_BANK_KERNEL].sector_count * FLASH_SECTOR_SIZE;
+ flash_info[FLASH_BANK_KERNEL].start[FIRST_SECTOR] = dev->base;
+ size += flash_info[FLASH_BANK_KERNEL].size;
+
+ /*
+ * Provide info for 512K PLCC FLASH ROM (U-Boot)
+ */
+ dev = FLASH_DEV_BANK0_BOOT;
+ flash_info[FLASH_BANK_BOOT].flash_id =
+ (dev->vendorID << 16) | dev->deviceID;
+ flash_info[FLASH_BANK_BOOT].sector_count = dev->sectors;
+ flash_info[FLASH_BANK_BOOT].size =
+ flash_info[FLASH_BANK_BOOT].sector_count * FLASH_SECTOR_SIZE;
+ flash_info[FLASH_BANK_BOOT].start[FIRST_SECTOR] = dev->base;
+ size += flash_info[FLASH_BANK_BOOT].size;
+
+
+ /*
+ * Provide info for 512K FLASH0 segment (U-Boot)
+ */
+ dev = FLASH_DEV_BANK0_HIGH;
+ flash_info[FLASH_BANK_AUX].flash_id =
+ (dev->vendorID << 16) | dev->deviceID;
+ flash_info[FLASH_BANK_AUX].sector_count = dev->sectors;
+ flash_info[FLASH_BANK_AUX].size =
+ flash_info[FLASH_BANK_AUX].sector_count * FLASH_SECTOR_SIZE;
+ flash_info[FLASH_BANK_AUX].start[FIRST_SECTOR] = dev->base;
+ size += flash_info[FLASH_BANK_AUX].size;
+
+
+ return size;
+}
+
+/*
+ * Get flash device from U-Boot flash info.
+ */
+flash_dev_t*
+getFlashDevFromInfo(flash_info_t* info)
+{
+ int i;
+
+ if(!info)
+ return NULL;
+
+ for (i = 0; i < flashDevCount; i++) {
+ flash_dev_t *dev = &flashDev[i];
+ if(dev->found && (dev->base == info->start[0]))
+ return dev;
+ }
+ printf("ERROR: notice, no FLASH mapped at address 0x%x\n",
+ (unsigned int)info->start[0]);
+ return NULL;
+}
+
+ulong
+flash_get_size (vu_long *addr, flash_info_t *info)
+{
+ int i;
+ for(i = 0; i < flashDevCount; i++) {
+ flash_dev_t *dev = &flashDev[i];
+ if(dev->found){
+ if(dev->base == (unsigned int)addr){
+ info->flash_id = (dev->vendorID << 16) | dev->deviceID;
+ info->sector_count = dev->sectors;
+ info->size = info->sector_count * FLASH_SECTOR_SIZE;
+ return dev->sectors * FLASH_SECTOR_SIZE;
+ }
+ }
+ }
+ return 0;
+}
+
+void
+flash_print_info (flash_info_t *info)
+{
+ int i;
+ unsigned int chip;
+
+ if (info->flash_id == FLASH_UNKNOWN) {
+ printf ("missing or unknown FLASH type\n");
+ return;
+ }
+
+ switch ((info->flash_id >> 16) & 0xff) {
+ case 0x1:
+ printf ("AMD ");
+ break;
+ default:
+ printf ("Unknown Vendor ");
+ break;
+ }
+ chip = (unsigned int) info->flash_id & 0x000000ff;
+
+ switch (chip) {
+
+ case AMD_ID_F040B:
+ printf ("AM29F040B (4 Mbit)\n");
+ break;
+
+ case AMD_ID_LV160B:
+ case FLASH_AM160LV:
+ case 0x49:
+ printf ("AM29LV160B (16 Mbit / 2M x 8bit)\n");
+ break;
+
+ default:
+ printf ("Unknown Chip Type:0x%x\n", chip);
+ break;
+ }
+
+ printf (" Size: %ld bytes in %d Sectors\n",
+ info->size, 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[FIRST_SECTOR] + i*FLASH_SECTOR_SIZE,
+ info->protect[i] ? " (RO)" : " "
+ );
+ }
+ printf ("\n");
+}
+
+
+/*
+ * Erase a range of flash sectors.
+ */
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+ vu_long *addr = (vu_long*)(info->start[0]);
+ int prot, sect, l_sect;
+ flash_dev_t* dev = NULL;
+
+ 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;
+
+ /* Start erase on unprotected sectors */
+ dev = getFlashDevFromInfo(info);
+ if(dev){
+ printf("Erase FLASH[%s] -%d sectors:", dev->name, dev->sectors);
+ for (sect = s_first; sect<=s_last; sect++) {
+ if (info->protect[sect] == 0) { /* not protected */
+ addr = (vu_long*)(dev->base);
+ /* printf("erase_sector: sector=%d, addr=0x%x\n",
+ sect, addr); */
+ printf(".");
+ if(ERROR == flashEraseSector(dev, sect)){
+ printf("ERROR: could not erase sector %d on FLASH[%s]\n",
+ sect, dev->name);
+ return 1;
+ }
+ }
+ }
+ }
+ printf (" done\n");
+ return 0;
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static int
+write_word (flash_info_t *info, ulong dest, ulong data)
+{
+
+ flash_dev_t* dev = getFlashDevFromInfo(info);
+ int addr = dest - info->start[0];
+
+ if (! dev)
+ return 1;
+
+ if(OK != flashWrite(dev, addr, (char*)&data, sizeof(ulong))){
+ printf("ERROR: could not write to addr=0x%x, data=0x%x\n",
+ (unsigned int)addr, (unsigned)data);
+ return 1;
+ }
+
+ if((addr % FLASH_SECTOR_SIZE) == 0)
+ printf(".");
+
+
+ PRINTF("write_word:0x%x, base=0x%x, addr=0x%x, data=0x%x\n",
+ (unsigned)info->start[0],
+ (unsigned)dest,
+ (unsigned)(dest - info->start[0]),
+ (unsigned)data);
+
+
+
+ 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)
+{
+ ulong cp, wp, data;
+ int i, l, rc;
+ flash_dev_t* dev = getFlashDevFromInfo(info);
+
+ if( dev ) {
+ printf("FLASH[%s]:", dev->name);
+ wp = (addr & ~3); /* get lower word aligned address */
+
+ /*
+ * 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<4 && cnt>0; ++i) {
+ data = (data << 8) | *src++;
+ --cnt;
+ ++cp;
+ }
+ for (; cnt==0 && i<4; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
+ }
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ }
+
+ /*
+ * handle word aligned part
+ */
+ while (cnt >= 4) {
+ data = 0;
+ for (i=0; i<4; ++i) {
+ data = (data << 8) | *src++;
+ }
+ if ((rc = write_word(info, wp, data)) != 0) {
+ return (rc);
+ }
+ wp += 4;
+ cnt -= 4;
+ }
+
+ if (cnt == 0) {
+ return (0);
+ }
+
+ /*
+ * handle unaligned tail bytes
+ */
+ data = 0;
+ for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+ data = (data << 8) | *src++;
+ --cnt;
+ }
+ for (; i<4; ++i, ++cp) {
+ data = (data << 8) | (*(uchar *)cp);
+ }
+
+ return (write_word(info, wp, data));
+ }
+ return 1;
+}
+
+/*-----------------------------------------------------------------------
+ */
diff --git a/board/mousse/m48t59y.c b/board/mousse/m48t59y.c
new file mode 100644
index 000000000..7205a9636
--- /dev/null
+++ b/board/mousse/m48t59y.c
@@ -0,0 +1,323 @@
+/*
+ * SGS M48-T59Y TOD/NVRAM Driver
+ *
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 1999, by Curt McDowell, 08-06-99, Broadcom Corp.
+ *
+ * (C) Copyright 2001, James Dougherty, 07/18/01, Broadcom Corp.
+ *
+ * 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
+ */
+
+/*
+ * SGS M48-T59Y TOD/NVRAM Driver
+ *
+ * The SGS M48 an 8K NVRAM starting at offset M48_BASE_ADDR and
+ * continuing for 8176 bytes. After that starts the Time-Of-Day (TOD)
+ * registers which are used to set/get the internal date/time functions.
+ *
+ * This module implements Y2K compliance by taking full year numbers
+ * and translating back and forth from the TOD 2-digit year.
+ *
+ * NOTE: for proper interaction with an operating system, the TOD should
+ * be used to store Universal Coordinated Time (GMT) and timezone
+ * conversions should be used.
+ *
+ * Here is a diagram of the memory layout:
+ *
+ * +---------------------------------------------+ 0xffe0a000
+ * | Non-volatile memory | .
+ * | | .
+ * | (8176 bytes of Non-volatile memory) | .
+ * | | .
+ * +---------------------------------------------+ 0xffe0bff0
+ * | Flags |
+ * +---------------------------------------------+ 0xffe0bff1
+ * | Unused |
+ * +---------------------------------------------+ 0xffe0bff2
+ * | Alarm Seconds |
+ * +---------------------------------------------+ 0xffe0bff3
+ * | Alarm Minutes |
+ * +---------------------------------------------+ 0xffe0bff4
+ * | Alarm Date |
+ * +---------------------------------------------+ 0xffe0bff5
+ * | Interrupts |
+ * +---------------------------------------------+ 0xffe0bff6
+ * | WatchDog |
+ * +---------------------------------------------+ 0xffe0bff7
+ * | Calibration |
+ * +---------------------------------------------+ 0xffe0bff8
+ * | Seconds |
+ * +---------------------------------------------+ 0xffe0bff9
+ * | Minutes |
+ * +---------------------------------------------+ 0xffe0bffa
+ * | Hours |
+ * +---------------------------------------------+ 0xffe0bffb
+ * | Day |
+ * +---------------------------------------------+ 0xffe0bffc
+ * | Date |
+ * +---------------------------------------------+ 0xffe0bffd
+ * | Month |
+ * +---------------------------------------------+ 0xffe0bffe
+ * | Year (2 digits only) |
+ * +---------------------------------------------+ 0xffe0bfff
+ */
+#include <common.h>
+#include <rtc.h>
+#include "mousse.h"
+
+/*
+ * Imported from mousse.h:
+ *
+ * TOD_REG_BASE Base of m48t59y TOD registers
+ * SYS_TOD_UNPROTECT() Disable NVRAM write protect
+ * SYS_TOD_PROTECT() Re-enable NVRAM write protect
+ */
+
+#define YEAR 0xf
+#define MONTH 0xe
+#define DAY 0xd
+#define DAY_OF_WEEK 0xc
+#define HOUR 0xb
+#define MINUTE 0xa
+#define SECOND 0x9
+#define CONTROL 0x8
+#define WATCH 0x7
+#define INTCTL 0x6
+#define WD_DATE 0x5
+#define WD_HOUR 0x4
+#define WD_MIN 0x3
+#define WD_SEC 0x2
+#define _UNUSED 0x1
+#define FLAGS 0x0
+
+#define M48_ADDR ((volatile unsigned char *) TOD_REG_BASE)
+
+int m48_tod_init(void)
+{
+ SYS_TOD_UNPROTECT();
+
+ M48_ADDR[CONTROL] = 0;
+ M48_ADDR[WATCH] = 0;
+ M48_ADDR[INTCTL] = 0;
+
+ /*
+ * If the oscillator is currently stopped (as on a new part shipped
+ * from the factory), start it running.
+ *
+ * Here is an example of the TOD bytes on a brand new M48T59Y part:
+ * 00 00 00 00 00 00 00 00 00 88 8c c3 bf c8 f5 01
+ */
+
+ if (M48_ADDR[SECOND] & 0x80)
+ M48_ADDR[SECOND] = 0;
+
+ /* Is battery low */
+ if ( M48_ADDR[FLAGS] & 0x10) {
+ printf("NOTICE: Battery low on Real-Time Clock (replace SNAPHAT).\n");
+ }
+
+ SYS_TOD_PROTECT();
+
+ return 0;
+}
+
+/*
+ * m48_tod_set
+ */
+
+static int to_bcd(int value)
+{
+ return value / 10 * 16 + value % 10;
+}
+
+static int from_bcd(int value)
+{
+ return value / 16 * 10 + value % 16;
+}
+
+static int day_of_week(int y, int m, int d) /* 0-6 ==> Sun-Sat */
+{
+ static int t[] = {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4};
+ y -= m < 3;
+ return (y + y/4 - y/100 + y/400 + t[m-1] + d) % 7;
+}
+
+/*
+ * Note: the TOD should store the current GMT
+ */
+
+int m48_tod_set(int year, /* 1980-2079 */
+ int month, /* 01-12 */
+ int day, /* 01-31 */
+ int hour, /* 00-23 */
+ int minute, /* 00-59 */
+ int second) /* 00-59 */
+
+{
+ SYS_TOD_UNPROTECT();
+
+ M48_ADDR[CONTROL] |= 0x80; /* Set WRITE bit */
+
+ M48_ADDR[YEAR] = to_bcd(year % 100);
+ M48_ADDR[MONTH] = to_bcd(month);
+ M48_ADDR[DAY] = to_bcd(day);
+ M48_ADDR[DAY_OF_WEEK] = day_of_week(year, month, day) + 1;
+ M48_ADDR[HOUR] = to_bcd(hour);
+ M48_ADDR[MINUTE] = to_bcd(minute);
+ M48_ADDR[SECOND] = to_bcd(second);
+
+ M48_ADDR[CONTROL] &= ~0x80; /* Clear WRITE bit */
+
+ SYS_TOD_PROTECT();
+
+ return 0;
+}
+
+/*
+ * Note: the TOD should store the current GMT
+ */
+
+int m48_tod_get(int *year, /* 1980-2079 */
+ int *month, /* 01-12 */
+ int *day, /* 01-31 */
+ int *hour, /* 00-23 */
+ int *minute, /* 00-59 */
+ int *second) /* 00-59 */
+{
+ int y;
+
+ SYS_TOD_UNPROTECT();
+
+ M48_ADDR[CONTROL] |= 0x40; /* Set READ bit */
+
+ y = from_bcd(M48_ADDR[YEAR]);
+ *year = y < 80 ? 2000 + y : 1900 + y;
+ *month = from_bcd(M48_ADDR[MONTH]);
+ *day = from_bcd(M48_ADDR[DAY]);
+ /* day_of_week = M48_ADDR[DAY_OF_WEEK] & 0xf; */
+ *hour = from_bcd(M48_ADDR[HOUR]);
+ *minute = from_bcd(M48_ADDR[MINUTE]);
+ *second = from_bcd(M48_ADDR[SECOND] & 0x7f);
+
+ M48_ADDR[CONTROL] &= ~0x40; /* Clear READ bit */
+
+ SYS_TOD_PROTECT();
+
+ return 0;
+}
+
+int m48_tod_get_second(void)
+{
+ return from_bcd(M48_ADDR[SECOND] & 0x7f);
+}
+
+/*
+ * Watchdog function
+ *
+ * If usec is 0, the watchdog timer is disarmed.
+ *
+ * If usec is non-zero, the watchdog timer is armed (or re-armed) for
+ * approximately usec microseconds (if the exact requested usec is
+ * not supported by the chip, the next higher available value is used).
+ *
+ * Minimum watchdog timeout = 62500 usec
+ * Maximum watchdog timeout = 124 sec (124000000 usec)
+ */
+
+void m48_watchdog_arm(int usec)
+{
+ int mpy, res;
+
+ SYS_TOD_UNPROTECT();
+
+ if (usec == 0) {
+ res = 0;
+ mpy = 0;
+ } else if (usec < 2000000) { /* Resolution: 1/16s if below 2s */
+ res = 0;
+ mpy = (usec + 62499) / 62500;
+ } else if (usec < 8000000) { /* Resolution: 1/4s if below 8s */
+ res = 1;
+ mpy = (usec + 249999) / 250000;
+ } else if (usec < 32000000) { /* Resolution: 1s if below 32s */
+ res = 2;
+ mpy = (usec + 999999) / 1000000;
+ } else { /* Resolution: 4s up to 124s */
+ res = 3;
+ mpy = (usec + 3999999) / 4000000;
+ if (mpy > 31)
+ mpy = 31;
+ }
+
+ M48_ADDR[WATCH] = (0x80 | /* Steer to RST signal (IRQ = N/C) */
+ mpy << 2 |
+ res);
+
+ SYS_TOD_PROTECT();
+}
+
+/*
+ * U-Boot RTC support.
+ */
+void
+rtc_get( struct rtc_time *tmp )
+{
+ m48_tod_get(&tmp->tm_year,
+ &tmp->tm_mon,
+ &tmp->tm_mday,
+ &tmp->tm_hour,
+ &tmp->tm_min,
+ &tmp->tm_sec);
+ tmp->tm_yday = 0;
+ tmp->tm_isdst= 0;
+
+#ifdef RTC_DEBUG
+ printf( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
+ tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+ tmp->tm_hour, tmp->tm_min, tmp->tm_sec );
+#endif
+}
+
+void
+rtc_set( struct rtc_time *tmp )
+{
+ m48_tod_set(tmp->tm_year, /* 1980-2079 */
+ tmp->tm_mon, /* 01-12 */
+ tmp->tm_mday, /* 01-31 */
+ tmp->tm_hour, /* 00-23 */
+ tmp->tm_min, /* 00-59 */
+ tmp->tm_sec); /* 00-59 */
+
+#ifdef RTC_DEBUG
+ printf( "Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n",
+ tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+ tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+#endif
+
+}
+
+void
+rtc_reset (void)
+{
+ m48_tod_init();
+}
+