Add support for AMCC Bamboo PPC440EP eval board

Patch by Stefan Roese, 04 Aug 2005

1 files changed, 166 insertions, 0 deletions

diff --git a/board/amcc/bamboo/flash.c b/board/amcc/bamboo/flash.c
new file mode 100644
index 0000000..97a4b98
--- /dev/null
+++ b/board/amcc/bamboo/flash.c
@@ -0,0 +1,166 @@
+/*
+ * (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.
+ *
+ * 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
+ */
+
+/*
+ * 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 <ppc4xx.h>
+#include <asm/processor.h>
+#include <ppc440.h>
+#include "bamboo.h"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DEBUGF(x...) printf(x)
+#else
+#define DEBUGF(x...)
+#endif				/* DEBUG */
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips        */
+
+/*
+ * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
+ */
+static unsigned long flash_addr_table[8][CFG_MAX_FLASH_BANKS] = {
+	{0x87800001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
+	{0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
+	{0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash  */
+	{0x87800000, 0x87880000, 0xFF800001}, /* 3:boot from big flash 33*/
+	{0x87800000, 0x87880000, 0xFF800001}, /* 4:boot from big flash 66*/
+	{0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
+	{0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66      */
+	{0x00000000, 0x00000000, 0x00000000}, /* 7:boot from             */
+};
+
+/*
+ * include common flash code (for amcc boards)
+ */
+#include "../common/flash.c"
+
+/*-----------------------------------------------------------------------
+ * 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)
+{
+	unsigned long total_b = 0;
+	unsigned long size_b[CFG_MAX_FLASH_BANKS];
+	unsigned short index = 0;
+	int i;
+	unsigned long val;
+	unsigned long ebc_boot_size;
+	unsigned long boot_selection;
+
+	mfsdr(sdr_pstrp0, val);
+	index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 29;
+
+	if ((index == 5) || (index == 7)) {
+		/*
+		 * Boot Settings in IIC EEprom address 0xA8 or 0xA4
+		 * Read Serial Device Strap Register1 in PPC440EP
+		 */
+		mfsdr(sdr_sdstp1, val);
+		boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
+		ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
+
+		switch(boot_selection) {
+		case SDR0_SDSTP1_BOOT_SEL_EBC:
+			switch(ebc_boot_size) {
+			case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
+				index = 3;
+				break;
+			case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
+				index = 0;
+				break;
+			}
+			break;
+
+		case SDR0_SDSTP1_BOOT_SEL_PCI:
+			index = 1;
+			break;
+
+		case SDR0_SDSTP1_BOOT_SEL_NDFC:
+			index = 2;
+			break;
+		}
+	}
+
+	DEBUGF("\n");
+	DEBUGF("FLASH: Index: %d\n", index);
+
+	/* Init: no FLASHes known */
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
+		flash_info[i].flash_id = FLASH_UNKNOWN;
+		flash_info[i].sector_count = -1;
+		flash_info[i].size = 0;
+
+		/* check whether the address is 0 */
+		if (flash_addr_table[index][i] == 0) {
+			continue;
+		}
+
+		/* call flash_get_size() to initialize sector address */
+		size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
+				   &flash_info[i]);
+		flash_info[i].size = size_b[i];
+		if (flash_info[i].flash_id == FLASH_UNKNOWN) {
+			printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
+			       i, size_b[i], size_b[i] << 20);
+			flash_info[i].sector_count = -1;
+			flash_info[i].size = 0;
+		}
+
+		/* Monitor protection ON by default */
+		(void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
+				    CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
+				    &flash_info[i]);
+#if defined(CFG_ENV_IS_IN_FLASH)
+		(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
+				    CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
+				    &flash_info[i]);
+#if defined(CFG_ENV_IS_IN_FLASH) && defined(CFG_ENV_ADDR_REDUND)
+		(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
+				    CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
+				    &flash_info[i]);
+#endif
+#endif
+
+		total_b += flash_info[i].size;
+	}
+
+	return total_b;
+}