Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 934 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/board/amcc/common/flash.c b/qemu/roms/u-boot/board/amcc/common/flash.c
new file mode 100644
index 000000000..4b2300b2f
--- /dev/null
+++ b/qemu/roms/u-boot/board/amcc/common/flash.c
@@ -0,0 +1,934 @@
+/*
+ * (C) Copyright 2004-2005
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
+ * Add support for Am29F016D and dynamic switch setting.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Modified 4/5/2001
+ * Wait for completion of each sector erase command issued
+ * 4/5/2001
+ * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
+ */
+
+#include <common.h>
+#include <asm/ppc4xx.h>
+#include <asm/processor.h>
+
+flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];	/* info for FLASH chips */
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static int write_word(flash_info_t * info, ulong dest, ulong data);
+#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
+static int write_word_1(flash_info_t * info, ulong dest, ulong data);
+static int write_word_2(flash_info_t * info, ulong dest, ulong data);
+static int flash_erase_1(flash_info_t * info, int s_first, int s_last);
+static int flash_erase_2(flash_info_t * info, int s_first, int s_last);
+static ulong flash_get_size_1(vu_long * addr, flash_info_t * info);
+static ulong flash_get_size_2(vu_long * addr, flash_info_t * info);
+#endif
+
+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_STM:
+		printf("STM ");
+		break;
+	case FLASH_MAN_FUJ:
+		printf("FUJITSU ");
+		break;
+	case FLASH_MAN_SST:
+		printf("SST ");
+		break;
+	case FLASH_MAN_MX:
+		printf ("MACRONIX ");
+		break;
+	default:
+		printf("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM040:
+		printf("AM29F040 (512 Kbit, uniform sector size)\n");
+		break;
+	case FLASH_AM400B:
+		printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
+		break;
+	case FLASH_AM400T:
+		printf("AM29LV400T (4 Mbit, top boot sector)\n");
+		break;
+	case FLASH_AM800B:
+		printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
+		break;
+	case FLASH_AM800T:
+		printf("AM29LV800T (8 Mbit, top boot sector)\n");
+		break;
+	case FLASH_AMD016:
+		printf("AM29F016D (16 Mbit, uniform sector size)\n");
+		break;
+	case FLASH_AM160B:
+		printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
+		break;
+	case FLASH_AM160T:
+		printf("AM29LV160T (16 Mbit, top boot sector)\n");
+		break;
+	case FLASH_AM320B:
+		printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
+		break;
+	case FLASH_AM320T:
+		printf("AM29LV320T (32 Mbit, top boot sector)\n");
+		break;
+	case FLASH_AM033C:
+		printf("AM29LV033C (32 Mbit, top boot sector)\n");
+		break;
+	case FLASH_SST800A:
+		printf("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
+		break;
+	case FLASH_SST160A:
+		printf("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
+		break;
+	case FLASH_STMW320DT:
+		printf ("M29W320DT (32 M, top sector)\n");
+		break;
+	case FLASH_MXLV320T:
+		printf ("MXLV320T (32 Mbit, top sector)\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!
+ */
+#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
+static ulong flash_get_size(vu_long * addr, flash_info_t * info)
+{
+	/* bit 0 used for big flash marking */
+	if ((ulong)addr & 0x1) {
+		return flash_get_size_2((vu_long *)((ulong)addr & 0xfffffffe), info);
+	} else {
+		return flash_get_size_1(addr, info);
+	}
+}
+
+static ulong flash_get_size_1(vu_long * addr, flash_info_t * info)
+#else
+static ulong flash_get_size(vu_long * addr, flash_info_t * info)
+#endif
+{
+	short i;
+	CONFIG_SYS_FLASH_WORD_SIZE value;
+	ulong base = (ulong) addr;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
+
+	DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
+
+	/* Write auto select command: read Manufacturer ID */
+	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+	addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
+	udelay(1000);
+
+	value = addr2[0];
+	DEBUGF("FLASH MANUFACT: %x\n", value);
+
+	switch (value) {
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
+		info->flash_id = FLASH_MAN_AMD;
+		break;
+	case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
+		info->flash_id = FLASH_MAN_FUJ;
+		break;
+	case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
+		info->flash_id = FLASH_MAN_SST;
+		break;
+	case (CONFIG_SYS_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;
+		return (0);	/* no or unknown flash  */
+	}
+
+	value = addr2[1];	/* device ID */
+	DEBUGF("\nFLASH DEVICEID: %x\n", value);
+
+	switch (value) {
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV040B:
+		info->flash_id += FLASH_AM040;
+		info->sector_count = 8;
+		info->size = 0x0080000;		/* => 512 KiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F040B:
+		info->flash_id += FLASH_AM040;
+		info->sector_count = 8;
+		info->size = 0x0080000;		/* => 512 KiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) STM_ID_M29W040B:
+		info->flash_id += FLASH_AM040;
+		info->sector_count = 8;
+		info->size = 0x0080000;		/* => 512 KiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_F016D:
+		info->flash_id += FLASH_AMD016;
+		info->sector_count = 32;
+		info->size = 0x00200000;	/* => 2 MiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV033C:
+		info->flash_id += FLASH_AMDLV033C;
+		info->sector_count = 64;
+		info->size = 0x00400000;	/* => 4 MiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400T:
+		info->flash_id += FLASH_AM400T;
+		info->sector_count = 11;
+		info->size = 0x00080000;	/* => 512 KiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV400B:
+		info->flash_id += FLASH_AM400B;
+		info->sector_count = 11;
+		info->size = 0x00080000;	/* => 512 KiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800T:
+		info->flash_id += FLASH_AM800T;
+		info->sector_count = 19;
+		info->size = 0x00100000;	/* => 1 MiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV800B:
+		info->flash_id += FLASH_AM800B;
+		info->sector_count = 19;
+		info->size = 0x00100000;	/* => 1 MiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160T:
+		info->flash_id += FLASH_AM160T;
+		info->sector_count = 35;
+		info->size = 0x00200000;	/* => 2 MiB */
+		break;
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_ID_LV160B:
+		info->flash_id += FLASH_AM160B;
+		info->sector_count = 35;
+		info->size = 0x00200000;	/* => 2 MiB */
+		break;
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		return (0);	/* => no or unknown flash */
+	}
+
+	/* set up sector start address table */
+	if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
+		for (i = 0; i < info->sector_count; i++)
+			info->start[i] = base + (i * 0x00010000);
+	} else {
+		if (info->flash_id & FLASH_BTYPE) {
+			/* set sector offsets for bottom boot block type */
+			info->start[0] = base + 0x00000000;
+			info->start[1] = base + 0x00004000;
+			info->start[2] = base + 0x00006000;
+			info->start[3] = base + 0x00008000;
+			for (i = 4; i < info->sector_count; i++) {
+				info->start[i] =
+				    base + (i * 0x00010000) - 0x00030000;
+			}
+		} else {
+			/* set sector offsets for top boot block type */
+			i = info->sector_count - 1;
+			info->start[i--] = base + info->size - 0x00004000;
+			info->start[i--] = base + info->size - 0x00006000;
+			info->start[i--] = base + info->size - 0x00008000;
+			for (; i >= 0; i--) {
+				info->start[i] = base + i * 0x00010000;
+			}
+		}
+	}
+
+	/* 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 CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
+
+		/* For AMD29033C flash we need to resend the command of *
+		 * reading flash protection for upper 8 Mb of flash     */
+		if (i == 32) {
+			addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
+			addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
+			addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
+		}
+
+		if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
+			info->protect[i] = 0;
+		else
+			info->protect[i] = addr2[2] & 1;
+	}
+
+	/* issue bank reset to return to read mode */
+	addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
+
+	return (info->size);
+}
+
+static int wait_for_DQ7_1(flash_info_t * info, int sect)
+{
+	ulong start, now, last;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
+	    (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
+
+	start = get_timer(0);
+	last = start;
+	while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
+	       (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
+		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 */
+			putc('.');
+			last = now;
+		}
+	}
+	return 0;
+}
+
+#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
+int flash_erase(flash_info_t * info, int s_first, int s_last)
+{
+	if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
+		return flash_erase_2(info, s_first, s_last);
+	} else {
+		return flash_erase_1(info, s_first, s_last);
+	}
+}
+
+static int flash_erase_1(flash_info_t * info, int s_first, int s_last)
+#else
+int flash_erase(flash_info_t * info, int s_first, int s_last)
+#endif
+{
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
+	int flag, prot, 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 will not be erased!\n",
+		       prot);
+	} else {
+		printf("\n");
+	}
+
+	/* 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 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
+
+			if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+				addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;	/* block erase */
+				for (i = 0; i < 50; i++)
+					udelay(1000);	/* wait 1 ms */
+			} else {
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+				addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;	/* sector erase */
+			}
+			/*
+			 * 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_1(info, sect);
+		}
+	}
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* wait at least 80us - let's wait 1 ms */
+	udelay(1000);
+
+	/* reset to read mode */
+	addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
+	addr[0] = (CONFIG_SYS_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));
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
+static int write_word(flash_info_t * info, ulong dest, ulong data)
+{
+	if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT)) {
+		return write_word_2(info, dest, data);
+	} else {
+		return write_word_1(info, dest, data);
+	}
+}
+
+static int write_word_1(flash_info_t * info, ulong dest, ulong data)
+#else
+static int write_word(flash_info_t * info, ulong dest, ulong data)
+#endif
+{
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *) & data;
+	ulong start;
+	int i;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*((vu_long *)dest) & data) != data) {
+		return (2);
+	}
+
+	for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
+		int flag;
+
+		/* Disable interrupts which might cause a timeout here */
+		flag = disable_interrupts();
+
+		addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+		addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+		addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_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] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
+		       (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
+
+			if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
+				return (1);
+			}
+		}
+	}
+
+	return (0);
+}
+
+#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
+
+#undef  CONFIG_SYS_FLASH_WORD_SIZE
+#define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+static ulong flash_get_size_2(vu_long * addr, flash_info_t * info)
+{
+	short i;
+	int n;
+	CONFIG_SYS_FLASH_WORD_SIZE value;
+	ulong base = (ulong) addr;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
+
+	DEBUGF("FLASH ADDR: %08x\n", (unsigned)addr);
+
+	/* Write auto select command: read Manufacturer ID */
+	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+	addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+	addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
+	udelay(1000);
+
+	value = addr2[0];
+	DEBUGF("FLASH MANUFACT: %x\n", value);
+
+	switch (value) {
+	case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
+		info->flash_id = FLASH_MAN_AMD;
+		break;
+	case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
+		info->flash_id = FLASH_MAN_FUJ;
+		break;
+	case (CONFIG_SYS_FLASH_WORD_SIZE) SST_MANUFACT:
+		info->flash_id = FLASH_MAN_SST;
+		break;
+	case (CONFIG_SYS_FLASH_WORD_SIZE) STM_MANUFACT:
+		info->flash_id = FLASH_MAN_STM;
+		break;
+	case (CONFIG_SYS_FLASH_WORD_SIZE) MX_MANUFACT:
+		info->flash_id = FLASH_MAN_MX;
+		break;
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		return (0);	/* no or unknown flash  */
+	}
+
+	value = addr2[1];	/* device ID */
+
+	DEBUGF("\nFLASH DEVICEID: %x\n", value);
+
+	switch (value) {
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
+		info->flash_id += FLASH_AM320T;
+		info->sector_count = 71;
+		info->size = 0x00400000;  break;	/* => 4 MiB	*/
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
+		info->flash_id += FLASH_AM320B;
+		info->sector_count = 71;
+		info->size = 0x00400000;  break;	/* => 4 MiB	*/
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
+		info->flash_id += FLASH_STMW320DT;
+		info->sector_count = 67;
+		info->size = 0x00400000;  break;	/* => 4 MiB	*/
+
+	case (CONFIG_SYS_FLASH_WORD_SIZE)MX_ID_LV320T:
+		info->flash_id += FLASH_MXLV320T;
+		info->sector_count = 71;
+		info->size = 0x00400000;
+		break;	/* => 4 MB	*/
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		return (0);	/* => no or unknown flash */
+	}
+
+	/* set up sector start address table */
+	if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) ||
+	    ((info->flash_id & FLASH_TYPEMASK) == FLASH_AMD016)) {
+		for (i = 0; i < info->sector_count; i++)
+			info->start[i] = base + (i * 0x00010000);
+	} else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
+		/* set sector offsets for top boot block type		*/
+		base += info->size;
+		i = info->sector_count;
+		/*  1 x 16k boot sector */
+		base -= 16 << 10;
+		--i;
+		info->start[i] = base;
+		/*  2 x 8k  boot sectors */
+		for (n=0; n<2; ++n) {
+			base -= 8 << 10;
+			--i;
+			info->start[i] = base;
+		}
+		/*  1 x 32k boot sector */
+		base -= 32 << 10;
+		--i;
+		info->start[i] = base;
+
+		while (i > 0) {			/* 64k regular sectors	*/
+			base -= 64 << 10;
+			--i;
+			info->start[i] = base;
+		}
+	} else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_MXLV320T) {
+		i = info->sector_count - 1;
+		info->start[i--] = base + info->size - 0x00002000;
+		info->start[i--] = base + info->size - 0x00004000;
+		info->start[i--] = base + info->size - 0x00006000;
+		info->start[i--] = base + info->size - 0x00008000;
+		info->start[i--] = base + info->size - 0x0000a000;
+		info->start[i--] = base + info->size - 0x0000c000;
+		info->start[i--] = base + info->size - 0x0000e000;
+		info->start[i--] = base + info->size - 0x00010000;
+
+		for (; i >= 0; i--)
+			info->start[i] = base + i * 0x00010000;
+	} else {
+		if (info->flash_id & FLASH_BTYPE) {
+			/* set sector offsets for bottom boot block type */
+			info->start[0] = base + 0x00000000;
+			info->start[1] = base + 0x00002000;
+			info->start[2] = base + 0x00004000;
+			info->start[3] = base + 0x00006000;
+			info->start[4] = base + 0x00008000;
+			info->start[5] = base + 0x0000a000;
+			info->start[6] = base + 0x0000c000;
+			info->start[7] = base + 0x0000e000;
+			for (i = 8; i < info->sector_count; i++) {
+				info->start[i] =
+				    base + ((i-7) * 0x00010000);
+			}
+		} else {
+			/* set sector offsets for top boot block type */
+			i = info->sector_count - 1;
+			info->start[i--] = base + info->size - 0x00002000;
+			info->start[i--] = base + info->size - 0x00004000;
+			info->start[i--] = base + info->size - 0x00006000;
+			info->start[i--] = base + info->size - 0x00008000;
+			info->start[i--] = base + info->size - 0x0000a000;
+			info->start[i--] = base + info->size - 0x0000c000;
+			info->start[i--] = base + info->size - 0x0000e000;
+			for (; i >= 0; i--) {
+				info->start[i] = base + i * 0x00010000;
+			}
+		}
+	}
+
+	/* 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 CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
+
+		/* For AMD29033C flash we need to resend the command of *
+		 * reading flash protection for upper 8 Mb of flash     */
+		if (i == 32) {
+			addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAAAAAAAA;
+			addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55555555;
+			addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90909090;
+		}
+
+		if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
+			info->protect[i] = 0;
+		else
+			info->protect[i] = addr2[2] & 1;
+	}
+
+	/* issue bank reset to return to read mode */
+	addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
+
+	return (info->size);
+}
+
+static int wait_for_DQ7_2(flash_info_t * info, int sect)
+{
+	ulong start, now, last;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
+	    (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
+
+	start = get_timer(0);
+	last = start;
+	while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
+	       (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) {
+		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 */
+			putc('.');
+			last = now;
+		}
+	}
+	return 0;
+}
+
+static int flash_erase_2(flash_info_t * info, int s_first, int s_last)
+{
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
+	int flag, prot, 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 will not be erased!\n",
+		       prot);
+	} else {
+		printf("\n");
+	}
+
+	/* 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 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
+
+			if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+				addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00500050;	/* block erase */
+				for (i = 0; i < 50; i++)
+					udelay(1000);	/* wait 1 ms */
+			} else {
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
+				addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+				addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+				addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030;	/* sector erase */
+			}
+			/*
+			 * 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_2(info, sect);
+		}
+	}
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* wait at least 80us - let's wait 1 ms */
+	udelay(1000);
+
+	/* reset to read mode */
+	addr = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
+	addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;	/* reset bank */
+
+	printf(" done\n");
+	return 0;
+}
+
+static int write_word_2(flash_info_t * info, ulong dest, ulong data)
+{
+	ulong *data_ptr = &data;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
+	volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
+	ulong start;
+	int i;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*((vu_long *)dest) & data) != data) {
+		return (2);
+	}
+
+	for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
+		int flag;
+
+		/* Disable interrupts which might cause a timeout here */
+		flag = disable_interrupts();
+
+		addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
+		addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
+		addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_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] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
+		       (data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
+
+			if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
+				return (1);
+			}
+		}
+	}
+
+	return (0);
+}
+#endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */