Patch by Tolunay Orkun, 14 May 2004:
Add support for Cogent CSB472 board (8MB Flash Rev)
diff --git a/board/csb472/csb472.c b/board/csb472/csb472.c
new file mode 100644
index 0000000..97de0fd
--- /dev/null
+++ b/board/csb472/csb472.c
@@ -0,0 +1,141 @@
+/*
+ * (C) Copyright 2004
+ * Tolunay Orkun, Nextio Inc., torkun@nextio.com
+ *
+ * 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/processor.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <405gp_enet.h>
+
+/*
+ * board_early_init_f: do early board initialization
+ *
+ */
+int board_early_init_f(void)
+{
+ /*-------------------------------------------------------------------------+
+ | Interrupt controller setup for the Walnut board.
+ | Note: IRQ 0-15 405GP internally generated; active high; level sensitive
+ | IRQ 16 405GP internally generated; active low; level sensitive
+ | IRQ 17-24 RESERVED
+ | IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive
+ | IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive
+ | IRQ 27 (EXT IRQ 2) Not Used
+ | IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
+ | IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
+ | IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
+ | IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
+ | Note for Walnut board:
+ | An interrupt taken for the FPGA (IRQ 25) indicates that either
+ | the Mouse, Keyboard, IRDA, or External Expansion caused the
+ | interrupt. The FPGA must be read to determine which device
+ | caused the interrupt. The default setting of the FPGA clears
+ |
+ +-------------------------------------------------------------------------*/
+
+ mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
+ mtdcr (uicer, 0x00000000); /* disable all ints */
+ mtdcr (uiccr, 0x00000000); /* set all to be non-critical */
+ mtdcr (uicpr, 0xFFFFFF83); /* set int polarities */
+ mtdcr (uictr, 0x10000000); /* set int trigger levels */
+ mtdcr (uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */
+ mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
+
+ mtebc (epcr, 0xa8400000); /* EBC always driven */
+
+ return 0; /* success */
+}
+
+/*
+ * checkboard: identify/verify the board we are running
+ *
+ * Remark: we just assume it is correct board here!
+ *
+ */
+int checkboard(void)
+{
+ printf("BOARD: Cogent CSB472\n");
+
+ return 0; /* success */
+}
+
+/*
+ * initram: Determine the size of mounted DRAM
+ *
+ * Size is determined by reading SDRAM configuration registers as
+ * configured by initialization code
+ *
+ */
+long initdram (int board_type)
+{
+ ulong tot_size;
+ ulong bank_size;
+ ulong tmp;
+
+ tot_size = 0;
+
+ mtdcr (memcfga, mem_mb0cf);
+ tmp = mfdcr (memcfgd);
+ if (tmp & 0x00000001) {
+ bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+ tot_size += bank_size;
+ }
+
+ mtdcr (memcfga, mem_mb1cf);
+ tmp = mfdcr (memcfgd);
+ if (tmp & 0x00000001) {
+ bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+ tot_size += bank_size;
+ }
+
+ mtdcr (memcfga, mem_mb2cf);
+ tmp = mfdcr (memcfgd);
+ if (tmp & 0x00000001) {
+ bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+ tot_size += bank_size;
+ }
+
+ mtdcr (memcfga, mem_mb3cf);
+ tmp = mfdcr (memcfgd);
+ if (tmp & 0x00000001) {
+ bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+ tot_size += bank_size;
+ }
+
+ return tot_size;
+}
+
+/*
+ * last_stage_init: final configurations (such as PHY etc)
+ *
+ */
+int last_stage_init(void)
+{
+ /* initialize the PHY */
+ miiphy_reset(CONFIG_PHY_ADDR);
+ miiphy_write(CONFIG_PHY_ADDR, PHY_BMCR,
+ PHY_BMCR_AUTON | PHY_BMCR_RST_NEG); /* AUTO neg */
+ miiphy_write(CONFIG_PHY_ADDR, PHY_FCSCR, 0x0d08); /* LEDs */
+
+ return 0; /* success */
+}