Patch by Tolunay Orkun, 14 May 2004:

Add support for Cogent CSB472 board (8MB Flash Rev)

1 files changed, 141 insertions, 0 deletions

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 */
+}