ARMV7: Add support for TI OMAP4 Panda

OMAP4 Panda is a reference board based on OMAP4430, an ARMV7 Cortex A9 CPU

This patch adds basic support for booting the board. It includes i2c and mmc
support. It assumes U-boot is loaded to SDRAM with the help of another small
bootloader (x-load) running from SRAM. U-boot currently relies on x-load for
clock, mux, and SDRAM initialization

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

MAINTAINERS

@@ -751,6 +751,7 @@ Nomadik Linux Team <STN_WMM_nomadik_linux@list.st.com>
 Steve Sakoman <sakoman@gmail.com>
 
 	omap3_overo	ARM ARMV7 (OMAP3xx SoC)
+	omap4_panda	ARM ARMV7 (OMAP4xx SoC)
 	omap4_sdp4430	ARM ARMV7 (OMAP4xx SoC)
 
 Jens Scharsig <esw@bus-elektronik.de>

MAKEALL

@@ -657,6 +657,7 @@ LIST_ARMV7="		\
 	omap3_sdp3430		\
 	omap3_zoom1		\
 	omap3_zoom2		\
+	omap4_panda		\
 	omap4_sdp4430		\
 	s5p_goni		\
 	smdkc100		\

board/ti/panda/Makefile

@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2000, 2001, 2002
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).a
+
+COBJS	:= panda.o
+
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+clean:
+	rm -f $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

board/ti/panda/config.mk

@@ -0,0 +1,32 @@
+#
+# (C) Copyright 2006-2009
+# Texas Instruments Incorporated, <www.ti.com>
+#
+# OMAP 4430 SDP
+# see http://www.ti.com/ for more information on Texas Instruments
+#
+# 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
+#
+# SDRAM Address Space:
+# 8000'0000 - 9fff'ffff (512 MB)
+# Linux-Kernel is expected to be at 8000'8000, entry 8000'8000
+# (mem base + reserved)
+
+# Let's place u-boot 1MB before the end of SDRAM.
+TEXT_BASE = 0x9ff00000

board/ti/panda/panda.c

@@ -0,0 +1,61 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments Incorporated, <www.ti.com>
+ * Steve Sakoman  <steve@sakoman.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/arch/sys_proto.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+const struct omap_sysinfo sysinfo = {
+	"Board: OMAP4 Panda\n"
+};
+
+/**
+ * @brief board_init
+ *
+ * @return 0
+ */
+int board_init(void)
+{
+	gd->bd->bi_arch_number = MACH_TYPE_OMAP4_PANDA;
+	gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	return 0;
+}
+
+/**
+ * @brief misc_init_r - Configure Panda board specific configurations
+ * such as power configurations, ethernet initialization as phase2 of
+ * boot sequence
+ *
+ * @return 0
+ */
+int misc_init_r(void)
+{
+	return 0;
+}

boards.cfg

@@ -262,6 +262,7 @@ omap3_zoom2	arm	armv7		zoom2		logicpd		omap3
 omap3_beagle	arm	armv7		beagle		ti		omap3
 omap3_evm	arm	armv7		evm		ti		omap3
 omap3_sdp3430	arm	armv7		sdp3430		ti		omap3
+omap4_panda	arm	armv7		panda		ti		omap4
 omap4_sdp4430	arm	armv7		sdp4430		ti		omap4
 am3517_evm	arm	armv7		am3517evm	logicpd		omap3
 devkit8000	arm	armv7		devkit8000	timll		omap3

include/configs/omap4_panda.h

@@ -0,0 +1,220 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments Incorporated.
+ * Steve Sakoman  <steve@sakoman.com>
+ *
+ * Configuration settings for the TI OMAP4 Panda board.
+ *
+ * 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
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * High Level Configuration Options
+ */
+#define CONFIG_ARMV7		1	/* This is an ARM V7 CPU core */
+#define CONFIG_OMAP		1	/* in a TI OMAP core */
+#define CONFIG_OMAP44XX		1	/* which is a 44XX */
+#define CONFIG_OMAP4430		1	/* which is in a 4430 */
+#define CONFIG_PANDA		1	/* working with Panda */
+
+/* Get CPU defs */
+#include <asm/arch/cpu.h>
+#include <asm/arch/omap4.h>
+
+/* Display CPU and Board Info */
+#define CONFIG_DISPLAY_CPUINFO		1
+#define CONFIG_DISPLAY_BOARDINFO	1
+
+/* Keep L2 Cache Disabled */
+#define CONFIG_L2_OFF			1
+
+/* Clock Defines */
+#define V_OSCK			38400000	/* Clock output from T2 */
+#define V_SCLK                   V_OSCK
+
+#undef CONFIG_USE_IRQ				/* no support for IRQs */
+#define CONFIG_MISC_INIT_R
+
+#define CONFIG_CMDLINE_TAG		1	/* enable passing of ATAGs */
+#define CONFIG_SETUP_MEMORY_TAGS	1
+#define CONFIG_INITRD_TAG		1
+#define CONFIG_REVISION_TAG		1
+
+/*
+ * Size of malloc() pool
+ * Total Size Environment - 256k
+ * Malloc - add 256k
+ */
+#define CONFIG_ENV_SIZE			(256 << 10)
+#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + (256 << 10))
+#define CONFIG_SYS_GBL_DATA_SIZE	128	/* bytes reserved for */
+						/* initial data */
+/* Vector Base */
+#define CONFIG_SYS_CA9_VECTOR_BASE	SRAM_ROM_VECT_BASE
+
+/*
+ * Hardware drivers
+ */
+
+/*
+ * serial port - NS16550 compatible
+ */
+#define V_NS16550_CLK			48000000
+
+#define CONFIG_SYS_NS16550
+#define CONFIG_SYS_NS16550_SERIAL
+#define CONFIG_SYS_NS16550_REG_SIZE	(-4)
+#define CONFIG_SYS_NS16550_CLK		V_NS16550_CLK
+#define CONFIG_CONS_INDEX		3
+#define CONFIG_SYS_NS16550_COM3		UART3_BASE
+
+#define CONFIG_ENV_IS_NOWHERE
+#define CONFIG_ENV_OVERWRITE
+#define CONFIG_BAUDRATE			115200
+#define CONFIG_SYS_BAUDRATE_TABLE	{4800, 9600, 19200, 38400, 57600,\
+					115200}
+
+/* I2C  */
+#define CONFIG_HARD_I2C			1
+#define CONFIG_SYS_I2C_SPEED		100000
+#define CONFIG_SYS_I2C_SLAVE		1
+#define CONFIG_SYS_I2C_BUS		0
+#define CONFIG_SYS_I2C_BUS_SELECT	1
+#define CONFIG_DRIVER_OMAP34XX_I2C	1
+#define CONFIG_I2C_MULTI_BUS		1
+
+/* MMC */
+#define CONFIG_MMC			1
+#define CONFIG_OMAP3_MMC		1
+#define CONFIG_SYS_MMC_SET_DEV		1
+#define CONFIG_DOS_PARTITION		1
+
+/* Flash */
+#define CONFIG_SYS_NO_FLASH	1
+
+/* commands to include */
+#include <config_cmd_default.h>
+
+/* Enabled commands */
+#define CONFIG_CMD_EXT2		/* EXT2 Support                 */
+#define CONFIG_CMD_FAT		/* FAT support                  */
+#define CONFIG_CMD_I2C		/* I2C serial bus support	*/
+#define CONFIG_CMD_MMC		/* MMC support                  */
+
+/* Disabled commands */
+#undef CONFIG_CMD_NET
+#undef CONFIG_CMD_FPGA		/* FPGA configuration Support   */
+#undef CONFIG_CMD_IMLS		/* List all found images        */
+
+/*
+ * Enabling relocation of u-boot by default
+ * Relocation can be skipped if u-boot is copied to the TEXT_BASE
+ */
+#undef CONFIG_SKIP_RELOCATE_UBOOT
+
+/*
+ * Environment setup
+ */
+
+/* allow overwriting serial config and ethaddr */
+#define CONFIG_ENV_OVERWRITE
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"loadaddr=0x82000000\0" \
+	"console=ttyS2,115200n8\0" \
+	"mmcdev=1\0" \
+	"mmcroot=/dev/mmcblk0p2 rw\0" \
+	"mmcrootfstype=ext3 rootwait\0" \
+	"mmcargs=setenv bootargs console=${console} " \
+		"root=${mmcroot} " \
+		"rootfstype=${mmcrootfstype}\0" \
+	"loadbootscript=fatload mmc ${mmcdev} ${loadaddr} boot.scr\0" \
+	"bootscript=echo Running bootscript from mmc${mmcdev} ...; " \
+		"source ${loadaddr}\0" \
+	"loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage\0" \
+	"mmcboot=echo Booting from mmc${mmcdev} ...; " \
+		"run mmcargs; " \
+		"bootm ${loadaddr}\0" \
+
+#define CONFIG_BOOTCOMMAND \
+	"if mmc init ${mmcdev}; then " \
+		"if run loadbootscript; then " \
+			"run bootscript; " \
+		"else " \
+			"if run loaduimage; then " \
+				"run mmcboot; " \
+			"else run nandboot; " \
+			"fi; " \
+		"fi; " \
+	"fi"
+
+#define CONFIG_AUTO_COMPLETE		1
+
+/*
+ * Miscellaneous configurable options
+ */
+
+#define CONFIG_SYS_LONGHELP	/* undef to save memory */
+#define CONFIG_SYS_HUSH_PARSER	/* use "hush" command parser */
+#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
+#define CONFIG_SYS_PROMPT		"Panda # "
+#define CONFIG_SYS_CBSIZE		256
+/* Print Buffer Size */
+#define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + \
+					sizeof(CONFIG_SYS_PROMPT) + 16)
+#define CONFIG_SYS_MAXARGS		16
+/* Boot Argument Buffer Size */
+#define CONFIG_SYS_BARGSIZE		(CONFIG_SYS_CBSIZE)
+
+/*
+ * memtest setup
+ */
+#define CONFIG_SYS_MEMTEST_START	0x80000000
+#define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_MEMTEST_START + (32 << 20))
+
+/* Default load address */
+#define CONFIG_SYS_LOAD_ADDR		0x80000000
+
+/* Use General purpose timer 1 */
+#define CONFIG_SYS_TIMERBASE		GPT1_BASE
+#define CONFIG_SYS_PTV			2	/* Divisor: 2^(PTV+1) => 8 */
+#define CONFIG_SYS_HZ			1000
+
+/*
+ * Stack sizes
+ *
+ * The stack sizes are set up in start.S using the settings below
+ */
+#define CONFIG_STACKSIZE	(128 << 10)	/* Regular stack */
+#ifdef CONFIG_USE_IRQ
+#define CONFIG_STACKSIZE_IRQ	(4 << 10)	/* IRQ stack */
+#define CONFIG_STACKSIZE_FIQ	(4 << 10)	/* FIQ stack */
+#endif
+
+/*
+ * SDRAM Memory Map
+ * Even though we use two CS all the memory
+ * is mapped to one contiguous block
+ */
+#define CONFIG_NR_DRAM_BANKS	1
+
+#endif /* __CONFIG_H */