* Patches by Richard Woodruff, 01 Oct 2004:

  add support for the TI OMAP2420 processor and its H4 reference
  board

* Patch by Christian Pellegrin, 24 Sep 2004:
  Added support for NE2000 compatible (DP8390, DP83902) NICs.

1 files changed, 202 insertions, 0 deletions

diff --git a/board/omap2420h4/sys_info.c b/board/omap2420h4/sys_info.c
new file mode 100644
index 0000000..b5fe9e3
--- /dev/null
+++ b/board/omap2420h4/sys_info.c
@@ -0,0 +1,202 @@
+/*
+ * (C) Copyright 2004
+ * Texas Instruments, <www.ti.com>
+ * Richard Woodruff <r-woodruff2@ti.com>
+ *
+ * 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/omap2420.h>
+#include <asm/io.h>
+#include <asm/arch/bits.h>
+#include <asm/arch/mem.h>  /* get mem tables */
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/sys_info.h>
+#include <i2c.h>
+
+/**************************************************************************
+ * get_cpu_type() - low level get cpu type
+ * - no C globals yet.
+ * - just looking to say if this is a 2422 or 2420 or ...
+ * - to start with we will look at switch settings..
+ * - 2422 id's same as 2420 for ES1 will rely on H4 board characteristics
+ *   (mux for 2420, non-mux for 2422).
+ ***************************************************************************/
+u32 get_cpu_type(void)
+{
+	u32 v;
+
+	v = __raw_readl(TAP_IDCODE_REG);
+	v &= CPU_24XX_ID_MASK;
+	if (v == CPU_2420_CHIPID) {	  /* currently 2420 and 2422 have same id */
+		if (is_gpmc_muxed() == GPMC_MUXED)	  /* if mux'ed */
+			return(CPU_2420);
+		else
+			return(CPU_2422);
+	} else
+		return(CPU_2420); /* don't know, say 2420 */
+}
+
+/******************************************
+ * get_cpu_rev(void) - extract version info
+ ******************************************/
+u32 get_cpu_rev(void)
+{
+	u32 v;
+	v = __raw_readl(TAP_IDCODE_REG);
+	v = v >> 28;
+	return(v+1);  /* currently 2422 and 2420 match up */
+}
+
+/***********************************************************
+ * get_mem_type() - identify type of mDDR part used.
+ * 2422 uses stacked DDR, 2 parts CS0/CS1.
+ * 2420 may have 1 or 2, no good way to know...only init 1...
+ * when eeprom data is up we can select 1 more.
+ *************************************************************/
+u32 get_mem_type(void)
+{
+	if (get_cpu_type() == CPU_2422)
+		return(DDR_STACKED);
+
+	if (get_board_type() == BOARD_H4_MENELAUS)
+		return(DDR_COMBO);
+	else
+		return(DDR_DISCRETE);
+}
+
+/***********************************************************************
+ * get_board_type() - get board type based on current production stats.
+ *  --- NOTE: 2 I2C EEPROMs will someday be populated with proper info.
+ *      when they are available we can get info from there.  This should
+ *      be correct of all known boards up until today.
+ ************************************************************************/
+u32 get_board_type(void)
+{
+	if (i2c_probe(I2C_MENELAUS) == 0)
+		return(BOARD_H4_MENELAUS);
+	else
+		return(BOARD_H4_SDP);
+}
+
+/******************************************************************
+ * get_sysboot_value() - get init word settings (dip switch on h4)
+ ******************************************************************/
+u32 get_sysboot_value(void)
+{
+	return(0x00000FFF & __raw_readl(CONTROL_STATUS));
+}
+
+/***************************************************************************
+ *  get_gpmc0_base() - Return current address hardware will be
+ *     fetching from. The below effectively gives what is correct, its a bit
+ *   mis-leading compared to the TRM.  For the most general case the mask
+ *   needs to be also taken into account this does work in practice.
+ *   - for u-boot we currently map:
+ *       -- 0 to nothing,
+ *       -- 4 to flash
+ *       -- 8 to enent
+ *       -- c to wifi
+ ****************************************************************************/
+u32 get_gpmc0_base(void)
+{
+	u32 b;
+
+	b = __raw_readl(GPMC_CONFIG7_0);
+	b &= 0x1F;	 /* keep base [5:0] */
+	b = b << 24; /* ret 0x0b000000 */
+	return(b);
+}
+
+/*****************************************************************
+ *  is_gpmc_muxed() - tells if address/data lines are multiplexed
+ *****************************************************************/
+u32 is_gpmc_muxed(void)
+{
+	u32 mux;
+	mux = get_sysboot_value();
+	if (mux & BIT1)	   /* if mux'ed */
+		return(GPMC_MUXED);
+	else
+		return(GPMC_NONMUXED);
+}
+
+/************************************************************************
+ *  get_gpmc0_type() - read sysboot lines to see type of memory attached
+ ************************************************************************/
+u32 get_gpmc0_type(void)
+{
+	u32 type;
+	type = get_sysboot_value();
+	if ((type & (BIT3|BIT2)) == (BIT3|BIT2))
+		return(TYPE_NAND);
+	else
+		return(TYPE_NOR);
+}
+
+/*******************************************************************
+ * get_gpmc0_width() - See if bus is in x8 or x16 (mainly for nand)
+ *******************************************************************/
+u32 get_gpmc0_width(void)
+{
+	u32 width;
+	width = get_sysboot_value();
+	if ((width & 0xF) == (BIT3|BIT2))
+		return(WIDTH_8BIT);
+	else
+		return(WIDTH_16BIT);
+}
+
+/*********************************************************************
+ * wait_on_value() - common routine to allow waiting for changes in
+ *   volatile regs.
+ *********************************************************************/
+u32 wait_on_value(u32 read_bit_mask, u32 match_value, u32 read_addr, u32 bound)
+{
+	u32 i = 0, val;
+	do {
+		++i;
+		val = __raw_readl(read_addr) & read_bit_mask;
+		if (val == match_value)
+			return(1);
+		if (i==bound)
+			return(0);
+	} while (1);
+}
+
+/*********************************************************************
+ *  display_board_info() - print banner with board info.
+ *********************************************************************/
+void display_board_info(u32 btype)
+{
+	char cpu_2420[] = "2420";
+	char cpu_2422[] = "2422";
+	char db_men[] = "Menelaus";
+	char db_ip[]= "IP";
+	char *cpu_s, *db_s;
+	u32 cpu = get_cpu_type();
+
+	if(cpu == CPU_2420)
+		cpu_s = cpu_2420;
+	else
+		cpu_s = cpu_2422;
+	if(btype ==  BOARD_H4_MENELAUS)
+		db_s = db_men;
+	else
+		db_s = db_ip;
+	printf("TI H4 SDP Base Board with OMAP%s %s Daughter Board\n",cpu_s, db_s);
+}