Add support for AMCC Bamboo PPC440EP eval board
Patch by Stefan Roese, 04 Aug 2005
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;
+}