init commit via android 4.4 uboot

1 files changed, 560 insertions, 0 deletions

diff --git a/board/fads/flash.c b/board/fads/flash.c
new file mode 100755
index 0000000..f0fb621
--- /dev/null
+++ b/board/fads/flash.c
@@ -0,0 +1,560 @@
+/*
+ * (C) Copyright 2000
+ * 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 <mpc8xx.h>
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips */
+
+#if defined(CFG_ENV_IS_IN_FLASH)
+# ifndef  CFG_ENV_ADDR
+#  define CFG_ENV_ADDR	(CFG_FLASH_BASE + CFG_ENV_OFFSET)
+# endif
+# ifndef  CFG_ENV_SIZE
+#  define CFG_ENV_SIZE	CFG_ENV_SECT_SIZE
+# endif
+# ifndef  CFG_ENV_SECT_SIZE
+#  define CFG_ENV_SECT_SIZE  CFG_ENV_SIZE
+# endif
+#endif
+
+#define QUAD_ID(id)	((((ulong)(id) & 0xFF) << 24) | \
+			 (((ulong)(id) & 0xFF) << 16) | \
+			 (((ulong)(id) & 0xFF) << 8)  | \
+			 (((ulong)(id) & 0xFF) << 0)    \
+			)
+
+/*-----------------------------------------------------------------------
+ * 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);
+
+/*-----------------------------------------------------------------------
+ */
+unsigned long flash_init (void)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	vu_long *bcsr = (vu_long *)BCSR_ADDR;
+	unsigned long pd_size, total_size, bsize, or_am;
+	int i;
+
+	/* Init: no FLASHes known */
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
+		flash_info[i].flash_id = FLASH_UNKNOWN;
+		flash_info[i].size = 0;
+		flash_info[i].sector_count = 0;
+		flash_info[i].start[0] = 0xFFFFFFFF; /* For TFTP */
+	}
+
+	switch ((bcsr[2] & BCSR2_FLASH_PD_MASK) >> BCSR2_FLASH_PD_SHIFT) {
+	case 2:
+	case 4:
+	case 6:
+		pd_size = 0x800000;
+		or_am = 0xFF800000;
+		break;
+
+	case 5:
+	case 7:
+		pd_size = 0x400000;
+		or_am = 0xFFC00000;
+		break;
+
+	case 8:
+		pd_size = 0x200000;
+		or_am = 0xFFE00000;
+		break;
+
+	default:
+		pd_size = 0;
+		or_am = 0xFFE00000;
+		printf("## Unsupported flash detected by BCSR: 0x%08X\n", bcsr[2]);
+	}
+
+	total_size = 0;
+	for (i = 0; i < CFG_MAX_FLASH_BANKS && total_size < pd_size; ++i) {
+		bsize = flash_get_size((vu_long *)(CFG_FLASH_BASE + total_size),
+				       &flash_info[i]);
+
+		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
+			printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
+				i, bsize, bsize >> 20);
+		}
+
+		total_size += bsize;
+	}
+
+	if (total_size != pd_size) {
+		printf("## Detected flash size %lu conflicts with PD data %lu\n",
+		       total_size, pd_size);
+	}
+
+	/* Remap FLASH according to real size */
+	memctl->memc_or0 = or_am | CFG_OR_TIMING_FLASH;
+
+	for (i = 0; i < CFG_MAX_FLASH_BANKS && flash_info[i].size != 0; ++i) {
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+		/* monitor protection ON by default */
+		if (CFG_MONITOR_BASE >= flash_info[i].start[0])
+			flash_protect (FLAG_PROTECT_SET,
+				       CFG_MONITOR_BASE,
+				       CFG_MONITOR_BASE + monitor_flash_len - 1,
+				       &flash_info[i]);
+#endif
+
+#ifdef	CFG_ENV_IS_IN_FLASH
+		/* ENV protection ON by default */
+		if (CFG_ENV_ADDR >= flash_info[i].start[0])
+			flash_protect (FLAG_PROTECT_SET,
+				       CFG_ENV_ADDR,
+				       CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
+				       &flash_info[i]);
+#endif
+	}
+
+	return total_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_AMD:
+		printf ("AMD ");
+		break;
+	case FLASH_MAN_FUJ:
+		printf ("FUJITSU ");
+		break;
+	case FLASH_MAN_BM:
+		printf ("BRIGHT MICRO ");
+		break;
+	default:
+		printf ("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM040:
+		printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n");
+		break;
+	case FLASH_AM080:
+		printf ("29F080 or 29LV080 (8 Mbit, uniform sectors)\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_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;
+	default:
+		printf ("Unknown Chip Type\n");
+		break;
+	}
+
+	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 can not run from flash!
+ */
+static ulong flash_get_size (vu_long * addr, flash_info_t * info)
+{
+	short i;
+
+	/* Write auto select command: read Manufacturer ID */
+	addr[0x0555] = 0xAAAAAAAA;
+	addr[0x02AA] = 0x55555555;
+	addr[0x0555] = 0x90909090;
+
+	switch (addr[0]) {
+	case QUAD_ID(AMD_MANUFACT):
+		info->flash_id = FLASH_MAN_AMD;
+		break;
+
+	case QUAD_ID(FUJ_MANUFACT):
+		info->flash_id = FLASH_MAN_FUJ;
+		break;
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		break;
+	}
+
+	switch (addr[1]) {	/* device ID            */
+	case QUAD_ID(AMD_ID_F040B):
+	case QUAD_ID(AMD_ID_LV040B):
+		info->flash_id += FLASH_AM040;
+		info->sector_count = 8;
+		info->size = 0x00200000;
+		break;		/* => 2 MB              */
+
+	case QUAD_ID(AMD_ID_F080B):
+		info->flash_id += FLASH_AM080;
+		info->sector_count = 16;
+		info->size = 0x00400000;
+		break;		/* => 4 MB              */
+#if 0
+	case AMD_ID_LV400T:
+		info->flash_id += FLASH_AM400T;
+		info->sector_count = 11;
+		info->size = 0x00100000;
+		break;		/* => 1 MB              */
+
+	case AMD_ID_LV400B:
+		info->flash_id += FLASH_AM400B;
+		info->sector_count = 11;
+		info->size = 0x00100000;
+		break;		/* => 1 MB              */
+
+	case AMD_ID_LV800T:
+		info->flash_id += FLASH_AM800T;
+		info->sector_count = 19;
+		info->size = 0x00200000;
+		break;		/* => 2 MB              */
+
+	case AMD_ID_LV800B:
+		info->flash_id += FLASH_AM800B;
+		info->sector_count = 19;
+		info->size = 0x00200000;
+		break;		/* => 2 MB              */
+
+	case AMD_ID_LV160T:
+		info->flash_id += FLASH_AM160T;
+		info->sector_count = 35;
+		info->size = 0x00400000;
+		break;		/* => 4 MB              */
+
+	case AMD_ID_LV160B:
+		info->flash_id += FLASH_AM160B;
+		info->sector_count = 35;
+		info->size = 0x00400000;
+		break;		/* => 4 MB              */
+
+	case AMD_ID_LV320T:
+		info->flash_id += FLASH_AM320T;
+		info->sector_count = 67;
+		info->size = 0x00800000;
+		break;		/* => 8 MB              */
+
+	case AMD_ID_LV320B:
+		info->flash_id += FLASH_AM320B;
+		info->sector_count = 67;
+		info->size = 0x00800000;
+		break;		/* => 8 MB              */
+#endif /* 0 */
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		return (0);	/* => no or unknown flash */
+	}
+
+#if 0
+	/* set up sector start address table */
+	if (info->flash_id & FLASH_BTYPE) {
+		/* set sector offsets for bottom boot block type        */
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00008000;
+		info->start[2] = base + 0x0000C000;
+		info->start[3] = base + 0x00010000;
+		for (i = 4; i < info->sector_count; i++) {
+			info->start[i] = base + (i * 0x00020000) - 0x00060000;
+		}
+	} else {
+		/* set sector offsets for top boot block type           */
+		i = info->sector_count - 1;
+		info->start[i--] = base + info->size - 0x00008000;
+		info->start[i--] = base + info->size - 0x0000C000;
+		info->start[i--] = base + info->size - 0x00010000;
+		for (; i >= 0; i--) {
+			info->start[i] = base + i * 0x00020000;
+		}
+	}
+#else
+	/* set sector offsets for uniform sector type */
+	for (i = 0; i < info->sector_count; i++)
+		info->start[i] = (ulong)addr + (i * 0x00040000);
+#endif
+
+	/* 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 */
+		addr = (volatile unsigned long *) (info->start[i]);
+		info->protect[i] = addr[2] & 1;
+	}
+
+	if (info->flash_id != FLASH_UNKNOWN) {
+		addr = (volatile unsigned long *) info->start[0];
+		*addr = 0xF0F0F0F0;	/* reset bank */
+	}
+
+	return (info->size);
+}
+
+/*-----------------------------------------------------------------------
+ */
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+	vu_long *addr = (vu_long *) (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 ERR_INVAL;
+	}
+
+	if ((info->flash_id == FLASH_UNKNOWN) ||
+	    (info->flash_id > FLASH_AMD_COMP)) {
+		printf ("Can't erase unknown flash type - aborted\n");
+		return ERR_UNKNOWN_FLASH_TYPE;
+	}
+
+	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[0x0555] = 0xAAAAAAAA;
+	addr[0x02AA] = 0x55555555;
+	addr[0x0555] = 0x80808080;
+	addr[0x0555] = 0xAAAAAAAA;
+	addr[0x02AA] = 0x55555555;
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect <= s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			addr = (vu_long *) (info->start[sect]);
+			addr[0] = 0x30303030;
+			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_long *) (info->start[l_sect]);
+	while ((addr[0] & 0xFFFFFFFF) != 0xFFFFFFFF)
+	{
+		if ((now = get_timer (start)) > CFG_FLASH_ERASE_TOUT) {
+			printf ("Timeout\n");
+			return ERR_TIMOUT;
+		}
+		/* show that we're waiting */
+		if ((now - last) > 1000) {	/* every second */
+			putc ('.');
+			last = now;
+		}
+	}
+
+      DONE:
+	/* reset to read mode */
+	addr = (volatile unsigned long *) info->start[0];
+	addr[0] = 0xF0F0F0F0;	/* 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)
+{
+	vu_long *addr = (vu_long *) (info->start[0]);
+	ulong start;
+	int flag;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*((vu_long *) dest) & data) != data) {
+		return ERR_NOT_ERASED;
+	}
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts ();
+
+	addr[0x0555] = 0xAAAAAAAA;
+	addr[0x02AA] = 0x55555555;
+	addr[0x0555] = 0xA0A0A0A0;
+
+	*((vu_long *) dest) = data;
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts ();
+
+	/* data polling for D7 */
+	start = get_timer (0);
+	while ((*((vu_long *) dest) & 0x80808080) != (data & 0x80808080))
+	{
+		if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
+			return ERR_TIMOUT;
+		}
+	}
+	return (0);
+}