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Diffstat (limited to 'board/prodrive/pdnb3/flash.c')
-rw-r--r--board/prodrive/pdnb3/flash.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/board/prodrive/pdnb3/flash.c b/board/prodrive/pdnb3/flash.c
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+++ b/board/prodrive/pdnb3/flash.c
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+/*
+ * (C) Copyright 2006
+ * Stefan Roese, DENX Software Engineering, sr@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 <asm/arch/ixp425.h>
+
+/*
+ * include common flash code (for esd boards)
+ */
+#include "../common/flash.c"
+
+/*
+ * Prototypes
+ */
+static ulong flash_get_size (vu_long * addr, flash_info_t * info);
+
+static inline ulong ld(ulong x)
+{
+ ulong k = 0;
+
+ while (x >>= 1)
+ ++k;
+
+ return k;
+}
+
+unsigned long flash_init(void)
+{
+ unsigned long size;
+ int i;
+
+ /* Init: no FLASHes known */
+ for (i=0; i<CFG_MAX_FLASH_BANKS; i++)
+ flash_info[i].flash_id = FLASH_UNKNOWN;
+
+ size = 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, size<<20);
+
+ /* Reconfigure CS0 to actual FLASH size */
+ *IXP425_EXP_CS0 = (*IXP425_EXP_CS0 & ~0x00003C00) | ((ld(size) - 9) << 10);
+
+ /* Monitor protection ON by default */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1,
+ &flash_info[CFG_MAX_FLASH_BANKS - 1]);
+
+ /* Environment protection ON by default */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR,
+ CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
+ &flash_info[CFG_MAX_FLASH_BANKS - 1]);
+
+ /* Redundant environment protection ON by default */
+ flash_protect(FLAG_PROTECT_SET,
+ CFG_ENV_ADDR_REDUND,
+ CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
+ &flash_info[CFG_MAX_FLASH_BANKS - 1]);
+
+ flash_info[0].size = size;
+
+ return size;
+}