ppc4xx: HCU4/5. remove obsolete hcu_flash.c

Signed-off-by: Niklaus Giger <niklaus.giger@netstal.com>

board/netstal/common/hcu_flash.c

@@ -1,514 +0,0 @@
-/*
- * (C) Copyright 2000-2004
- * Wolfgang Denk, DENX Software Engineering, wd@denx.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>
-#include <ppc4xx.h>
-#include <asm/processor.h>
-
-#if CFG_MAX_FLASH_BANKS != 1
-#error "CFG_MAX_FLASH_BANKS must be 1"
-#endif
-flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips	*/
-
-/*-----------------------------------------------------------------------
- * Functions
- */
-static ulong flash_get_size (vu_long * addr, flash_info_t * info);
-static int write_word (flash_info_t * info, ulong dest, ulong data);
-static void flash_get_offsets (ulong base, flash_info_t * info);
-
-#define ADDR0		0x5555
-#define ADDR1		0x2aaa
-#define FLASH_WORD_SIZE unsigned char
-
-/*-----------------------------------------------------------------------*/
-
-unsigned long flash_init (void)
-{
-	unsigned long size_b0;
-
-	/* Init: no FLASHes known */
-	flash_info[0].flash_id = FLASH_UNKNOWN;
-
-	/* Static FLASH Bank configuration here - FIXME XXX */
-
-	size_b0 = flash_get_size ((vu_long *) FLASH_BASE0_PRELIM,
-				  &flash_info[0]);
-
-	if (flash_info[0].flash_id == FLASH_UNKNOWN) {
-		printf ("## Unknown FLASH on Bank 0- Size=0x%08lx=%ld MB\n",
-			size_b0, size_b0 << 20);
-	}
-
-	/* Only one bank */
-	/* Setup offsets */
-	flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
-
-	/* Monitor protection ON by default */
-	(void) flash_protect (FLAG_PROTECT_SET,
-			      FLASH_BASE0_PRELIM,
-			      FLASH_BASE0_PRELIM + monitor_flash_len - 1,
-			      &flash_info[0]);
-	flash_info[0].size = size_b0;
-
-	return size_b0;
-}
-
-
-/*-----------------------------------------------------------------------*/
-/*
- * This implementation assumes that the flash chips are uniform sector
- * devices. This is true for all likely flash devices on a HCUx.
- */
-static void flash_get_offsets (ulong base, flash_info_t * info)
-{
-	unsigned idx;
-	unsigned long sector_size = info->size / info->sector_count;
-
-	for (idx = 0; idx < info->sector_count; idx += 1) {
-		info->start[idx] = base + (idx * sector_size);
-	}
-}
-
-/*-----------------------------------------------------------------------*/
-void flash_print_info (flash_info_t * info)
-{
-	int i;
-	int k;
-	int size;
-	int erased;
-	volatile unsigned long *flash;
-
-	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;
-	case FLASH_MAN_FUJ:
-		printf ("FUJITSU ");
-		break;
-	case FLASH_MAN_SST:
-		printf ("SST ");
-		break;
-	case FLASH_MAN_STM:
-		printf ("ST Micro ");
-		break;
-	default:
-		printf ("Unknown Vendor ");
-		break;
-	}
-
-	  /* (Reduced table of only parts expected in HCUx boards.) */
-	switch (info->flash_id) {
-	case FLASH_MAN_AMD | FLASH_AM040:
-		printf ("AM29F040 (512 Kbit, uniform sector size)\n");
-		break;
-	case FLASH_MAN_STM | FLASH_AM040:
-		printf ("MM29W040W (512 Kbit, uniform sector size)\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) {
-		/*
-		 * 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;
-			}
-		}
-
-		if ((i % 5) == 0)
-			printf ("\n   ");
-		printf (" %08lX%s%s",
-			info->start[i],
-			erased ? " E" : "  ", info->protect[i] ? "RO " : "   "
-		);
-	}
-	printf ("\n");
-	return;
-}
-
-/*-----------------------------------------------------------------------*/
-
-/*
- * The following code cannot be run from FLASH!
- */
-static ulong flash_get_size (vu_long * addr, flash_info_t * info)
-{
-	short i;
-	FLASH_WORD_SIZE value;
-	ulong base = (ulong) addr;
-	volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) addr;
-
-	/* Write auto select command: read Manufacturer ID */
-	asm("isync");
-	addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
-	asm("isync");
-	addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
-	asm("isync");
-	addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00900090;
-	asm("isync");
-
-	value = addr2[0];
-	asm("isync");
-
-	switch (value) {
-	case (FLASH_WORD_SIZE) AMD_MANUFACT:
-		info->flash_id = FLASH_MAN_AMD;
-		break;
-	case (FLASH_WORD_SIZE) FUJ_MANUFACT:
-		info->flash_id = FLASH_MAN_FUJ;
-		break;
-	case (FLASH_WORD_SIZE) SST_MANUFACT:
-		info->flash_id = FLASH_MAN_SST;
-		break;
-	case (FLASH_WORD_SIZE)STM_MANUFACT:
-		info->flash_id = FLASH_MAN_STM;
-		break;
-	default:
-		info->flash_id = FLASH_UNKNOWN;
-		info->sector_count = 0;
-		info->size = 0;
-		printf("Unknown flash manufacturer code: 0x%x at %p\n",
-		       value, addr);
-		addr2[ADDR0] = (FLASH_WORD_SIZE) 0;
-		return (0);	/* no or unknown flash  */
-	}
-
-	value = addr2[1];	/* device ID		*/
-
-	switch (value) {
-	case (FLASH_WORD_SIZE) AMD_ID_F040B:
-		info->flash_id += FLASH_AM040;
-		info->sector_count = 8;
-		info->size = 0x0080000;	/* => 512 ko */
-		break;
-	case (FLASH_WORD_SIZE) AMD_ID_LV040B:
-		info->flash_id += FLASH_AM040;
-		info->sector_count = 8;
-		info->size = 0x0080000;	/* => 512 ko */
-		break;
-	case (FLASH_WORD_SIZE)STM_ID_M29W040B: /* most likele HCU5 chip */
-		info->flash_id += FLASH_AM040;
-		info->sector_count = 8;
-		info->size = 0x0080000; /* => 512 ko */
-		break;
-	default:
-		info->flash_id = FLASH_UNKNOWN;
-		return (0);	/* => no or unknown flash */
-
-	}
-
-	  /* Calculate the sector offsets (Use HCUx Optimized code). */
-	flash_get_offsets(base, info);
-
-	/* check for protected sectors */
-	for (i = 0; i < info->sector_count; i++) {
-		/* read sector protection at sector address,
-		 *(A7 .. A0) = 0x02
-		 * D0 = 1 if protected
-		 */
-		addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]);
-		if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
-			info->protect[i] = 0;
-		else
-			info->protect[i] = addr2[2] & 1;
-	}
-
-	/*
-	 * Prevent writes to uninitialized FLASH.
-	 */
-	if (info->flash_id != FLASH_UNKNOWN) {
-		addr2 = (FLASH_WORD_SIZE *) info->start[0];
-		*addr2 = (FLASH_WORD_SIZE) 0x00F000F0;	/* reset bank */
-	}
-
-	return (info->size);
-}
-
-int wait_for_DQ7 (flash_info_t * info, int sect)
-{
-	ulong start, now, last;
-	volatile FLASH_WORD_SIZE *addr =
-		(FLASH_WORD_SIZE *) (info->start[sect]);
-
-	start = get_timer (0);
-	last = start;
-	while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) !=
-	       (FLASH_WORD_SIZE) 0x00800080) {
-		if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
-			printf ("Timeout\n");
-			return -1;
-		}
-		/* show that we're waiting */
-		if ((now - last) > 1000) {	/* every second */
-			putc ('.');
-			last = now;
-		}
-	}
-	return 0;
-}
-
-/*-----------------------------------------------------------------------*/
-
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
-	volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]);
-	volatile FLASH_WORD_SIZE *addr2;
-	int flag, prot, sect, l_sect;
-	int i;
-
-	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;
-	}
-
-	if (info->flash_id == FLASH_UNKNOWN) {
-		printf ("Can't erase unknown flash type - aborted\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 not erased!\n",
-			prot);
-	} else {
-		printf ("\n");
-	}
-
-	l_sect = -1;
-
-	/* Disable interrupts which might cause a timeout here */
-	flag = disable_interrupts ();
-
-	/* Start erase on unprotected sectors */
-	for (sect = s_first; sect <= s_last; sect++) {
-		if (info->protect[sect] == 0) {	/* not protected */
-			addr2 = (FLASH_WORD_SIZE *) (info->start[sect]);
-			printf ("Erasing sector %p\n", addr2);	/* CLH */
-
-			if ((info->flash_id & FLASH_VENDMASK) ==
-			    FLASH_MAN_SST) {
-				addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
-				addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
-				addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080;
-				addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
-				addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
-				/* block erase */
-				addr2[0] = (FLASH_WORD_SIZE) 0x00500050;
-				for (i = 0; i < 50; i++) udelay (1000);
-			} else {
-				addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
-				addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
-				addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080;
-				addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
-				addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
-				/* sector erase */
-				addr2[0] = (FLASH_WORD_SIZE) 0x00300030;
-			}
-			l_sect = sect;
-			/*
-			 * Wait for each sector to complete, it's more
-			 * reliable.  According to AMD Spec, you must
-			 * issue all erase commands within a specified
-			 * timeout.  This has been seen to fail, especially
-			 * if printf()s are included (for debug)!!
-			 */
-			wait_for_DQ7 (info, 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;
-	wait_for_DQ7 (info, l_sect);
-
-DONE:
-	/* reset to read mode */
-	addr = (FLASH_WORD_SIZE *) info->start[0];
-	addr[0] = (FLASH_WORD_SIZE) 0x00F000F0;	/* 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)
-{
-	ulong cp, wp, data;
-	int i, l, rc;
-
-	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));
-}
-
-/*-----------------------------------------------------------------------
- * 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)
-{
-	volatile FLASH_WORD_SIZE *addr2 =
-		(FLASH_WORD_SIZE *) (info->start[0]);
-	volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest;
-	volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
-	ulong start;
-	int i;
-
-	/* Check if Flash is (sufficiently) erased */
-	if ((*((volatile FLASH_WORD_SIZE *) dest) &
-	    (FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
-		return (2);
-	}
-
-	for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
-		int flag;
-
-		/* Disable interrupts which might cause a timeout here */
-		flag = disable_interrupts ();
-
-		addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
-		addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
-		addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0;
-
-		dest2[i] = data2[i];
-
-		/* re-enable interrupts if necessary */
-		if (flag)
-			enable_interrupts ();
-
-		/* data polling for D7 */
-		start = get_timer (0);
-		while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) !=
-		       (data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
-
-			if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
-				return (1);
-			}
-		}
-	}
-
-	return (0);
-}