Nios II - Add Altera EP1C20, EP1S10 and EP1S40 boards

  Patch by Scott McNutt, 08 Jun 2006

1 files changed, 190 insertions, 0 deletions

diff --git a/board/altera/common/AMDLV065D.c b/board/altera/common/AMDLV065D.c
new file mode 100644
index 0000000..8a7b14e
--- /dev/null
+++ b/board/altera/common/AMDLV065D.c
@@ -0,0 +1,190 @@
+/*
+ * (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>
+#if defined(CONFIG_NIOS)
+#include <nios.h>
+#else
+#include <asm/io.h>
+#endif
+
+#define SECTSZ		(64 * 1024)
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+/*----------------------------------------------------------------------*/
+unsigned long flash_init (void)
+{
+	int i;
+	unsigned long addr;
+	flash_info_t *fli = &flash_info[0];
+
+	fli->size = CFG_FLASH_SIZE;
+	fli->sector_count = CFG_MAX_FLASH_SECT;
+	fli->flash_id = FLASH_MAN_AMD + FLASH_AMDLV065D;
+
+	addr = CFG_FLASH_BASE;
+	for (i = 0; i < fli->sector_count; ++i) {
+		fli->start[i] = addr;
+		addr += SECTSZ;
+		fli->protect[i] = 1;
+	}
+
+	return (CFG_FLASH_SIZE);
+}
+/*--------------------------------------------------------------------*/
+void flash_print_info (flash_info_t * info)
+{
+	int i, k;
+	int erased;
+	unsigned long *addr;
+
+	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 */
+		erased = 1;
+		addr = (unsigned long *) info->start[i];
+		for (k = 0; k < SECTSZ/sizeof(unsigned long); k++) {
+			if ( readl(addr++) != (unsigned long)-1) {
+				erased = 0;
+				break;
+			}
+		}
+
+		/* Print the info */
+		if ((i % 5) == 0)
+			printf ("\n   ");
+		printf (" %08lX%s%s",
+			info->start[i],
+			erased ? " E" : "  ",
+			info->protect[i] ? "RO " : "   ");
+	}
+	printf ("\n");
+}
+
+/*-------------------------------------------------------------------*/
+
+
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+	unsigned char *addr = (unsigned char *) info->start[0];
+	unsigned char *addr2;
+	int prot, sect;
+	ulong start;
+
+	/* Some sanity checking */
+	if ((s_first < 0) || (s_first > s_last)) {
+		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");
+	}
+
+	/* It's ok to erase multiple sectors provided we don't delay more
+	 * than 50 usec between cmds ... at which point the erase time-out
+	 * occurs. So don't go and put printf() calls in the loop ... it
+	 * won't be very helpful ;-)
+	 */
+	for (sect = s_first; sect <= s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			addr2 = (unsigned char *) info->start[sect];
+			writeb (addr, 0xaa);
+			writeb (addr,  0x55);
+			writeb (addr,  0x80);
+			writeb (addr,  0xaa);
+			writeb (addr,  0x55);
+			writeb (addr2, 0x30);
+			/* Now just wait for 0xff & provide some user
+			 * feedback while we wait.
+			 */
+			start = get_timer (0);
+			while ( readb (addr2) != 0xff) {
+				udelay (1000 * 1000);
+				putc ('.');
+				if (get_timer (start) > CFG_FLASH_ERASE_TOUT) {
+					printf ("timeout\n");
+					return 1;
+				}
+			}
+		}
+	}
+	printf ("\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)
+{
+
+	vu_char *cmd = (vu_char *) info->start[0];
+	vu_char *dst = (vu_char *) addr;
+	unsigned char b;
+	ulong start;
+
+	while (cnt) {
+		/* Check for sufficient erase */
+		b = *src;
+		if ((readb (dst) & b) != b) {
+			printf ("%02x : %02x\n", readb (dst), b);
+			return (2);
+		}
+
+		writeb (cmd,  0xaa);
+		writeb (cmd,  0x55);
+		writeb (cmd,  0xa0);
+		writeb (dst, b);
+
+		/* Verify write */
+		start = get_timer (0);
+		while (readb (dst) != b) {
+			if (get_timer (start) > CFG_FLASH_WRITE_TOUT) {
+				return 1;
+			}
+		}
+		dst++;
+		src++;
+		cnt--;
+	}
+
+	return (0);
+}