[U-Boot] [PATCH 02/31] iMX28: Add basic support for DENX M28EVK board

[Marek Vasut <marek.vasut@gmail.com>]

This contains support for booting the board and output via DUART.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Detlev Zundel <dzu@denx.de>
---
 MAINTAINERS                |    1 +
 board/denx/m28evk/Makefile |   49 ++++++++++++++++++++
 board/denx/m28evk/m28evk.c |   69 ++++++++++++++++++++++++++++
 boards.cfg                 |    1 +
 include/configs/m28evk.h   |  108 ++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 228 insertions(+), 0 deletions(-)
 create mode 100644 board/denx/m28evk/Makefile
 create mode 100644 board/denx/m28evk/m28evk.c
 create mode 100644 include/configs/m28evk.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 2f60a60..61a55a8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -847,6 +847,7 @@ Marek Vasut <marek.vasut@gmail.com>
 	palmtc		xscale/pxa
 	vpac270		xscale/pxa
 	zipitz2		xscale/pxa
+	m28evk		i.MX28
  	efikamx		i.MX51
 
 Hugo Villeneuve <hugo.villeneuve@lyrtech.com>
diff --git a/board/denx/m28evk/Makefile b/board/denx/m28evk/Makefile
new file mode 100644
index 0000000..4037199
--- /dev/null
+++ b/board/denx/m28evk/Makefile
@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd at 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).o
+
+COBJS	:= m28evk.o
+
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+clean:
+	rm -f $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/denx/m28evk/m28evk.c b/board/denx/m28evk/m28evk.c
new file mode 100644
index 0000000..5f4f787
--- /dev/null
+++ b/board/denx/m28evk/m28evk.c
@@ -0,0 +1,69 @@
+/*
+ * DENX M28 module
+ *
+ * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * 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/io.h>
+#include <asm/arch/regs-common.h>
+#include <asm/arch/regs-base.h>
+#include <asm/arch/regs-clkctrl.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/mx28.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Functions
+ */
+int board_early_init_f(void)
+{
+	/* IO0 clock at 480MHz */
+	mx28_set_ioclk(0, 480000);
+	/* IO1 clock at 480MHz */
+	mx28_set_ioclk(1, 480000);
+
+	/* SSP0 clock at 96MHz */
+	mx28_set_sspclk(0, 96000, 0);
+	/* SSP2 clock at 96MHz */
+	mx28_set_sspclk(2, 96000, 0);
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* Will change it for MX28 EVK later */
+	gd->bd->bi_arch_number = CONFIG_M28_MACHID;
+	/* Adress of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	/* dram_init must store complete ramsize in gd->ram_size */
+	gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE);
+	return 0;
+}
diff --git a/boards.cfg b/boards.cfg
index 8a5bfc1..c5d8a90 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -147,6 +147,7 @@ jadecpu                      arm         arm926ejs   jadecpu             syteco
 zmx25                        arm         arm926ejs   zmx25               syteco         mx25
 imx27lite                    arm         arm926ejs   imx27lite           logicpd        mx27
 magnesium                    arm         arm926ejs   imx27lite           logicpd        mx27
+m28evk                       arm         arm926ejs   -                   denx           mx28
 nhk8815                      arm         arm926ejs   nhk8815             st             nomadik
 nhk8815_onenand              arm         arm926ejs   nhk8815             st             nomadik       nhk8815:BOOT_ONENAND
 omap5912osk                  arm         arm926ejs   -                   ti             omap
diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h
new file mode 100644
index 0000000..4f41e26
--- /dev/null
+++ b/include/configs/m28evk.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ * 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 __M28_H__
+#define __M28_H__
+
+#include <asm/arch/regs-base.h>
+
+/*
+ * SoC configurations
+ */
+#define	CONFIG_MX28				/* i.MX28 SoC */
+#define	CONFIG_MX28_TO1_2
+#define	CONFIG_SYS_HZ		1000		/* Ticks per second */
+
+#define	CONFIG_M28_MACHID	MACH_TYPE_M28EVK
+
+#define	CONFIG_SYS_NO_FLASH
+#define	CONFIG_SYS_ICACHE_OFF
+#define	CONFIG_SYS_DCACHE_OFF
+#define	CONFIG_BOARD_EARLY_INIT_F
+
+/*
+ * U-Boot Commands
+ */
+#include <config_cmd_default.h>
+#define	CONFIG_DISPLAY_CPUINFO
+#define	CONFIG_CMD_CACHE
+#undef	CONFIG_CMD_DHCP
+#undef	CONFIG_CMD_NET
+#undef	CONFIG_CMD_NFS
+#undef	CONFIG_CMD_PING
+#define	CONFIG_CMD_SETEXPR
+
+/*
+ * Memory configurations
+ */
+#define	CONFIG_NR_DRAM_BANKS		1		/* 2 banks of DRAM */
+#define	PHYS_SDRAM_1			0x40000000	/* Base address */
+#define	PHYS_SDRAM_1_SIZE		0x10000000	/* 256 MB */
+#define	CONFIG_STACKSIZE		0x00010000	/* 128 KB stack */
+#define	CONFIG_SYS_MALLOC_LEN		0x00400000	/* 4 MB for malloc */
+#define	CONFIG_SYS_GBL_DATA_SIZE	128		/* Initial data */
+#define	CONFIG_SYS_MEMTEST_START	0x40000000	/* Memtest start adr */
+#define	CONFIG_SYS_MEMTEST_END		0x40400000	/* 4 MB RAM test */
+#define	CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM_1
+#define	CONFIG_SYS_INIT_SP_ADDR		0x18000
+#define	CONFIG_SYS_TEXT_BASE		0x40000000
+
+/*
+ * U-Boot general configurations
+ */
+#define	CONFIG_SYS_LONGHELP
+#define	CONFIG_SYS_PROMPT	"=> "
+#define	CONFIG_SYS_CBSIZE	1024		/* Console I/O buffer size */
+#define	CONFIG_SYS_PBSIZE	\
+	(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+						/* Print buffer size */
+#define	CONFIG_SYS_MAXARGS	32		/* Max number of command args */
+#define	CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE
+						/* Boot argument buffer size */
+#define	CONFIG_VERSION_VARIABLE			/* U-BOOT version */
+#define	CONFIG_AUTO_COMPLETE			/* Command auto complete */
+#define	CONFIG_CMDLINE_EDITING			/* Command history etc */
+#define	CONFIG_SYS_HUSH_PARSER
+#define	CONFIG_SYS_PROMPT_HUSH_PS2	"> "
+
+/*
+ * Serial Driver
+ */
+#define	CONFIG_PL011_SERIAL
+#define	CONFIG_PL011_CLOCK		24000000
+#define	CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
+#define	CONFIG_CONS_INDEX		0
+#define	CONFIG_BAUDRATE			115200	/* Default baud rate */
+#define	CONFIG_SYS_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }
+
+/*
+ * Boot Linux
+ */
+#define	CONFIG_CMDLINE_TAG
+#define	CONFIG_SETUP_MEMORY_TAGS
+#define	CONFIG_BOOTDELAY	3
+#define	CONFIG_BOOTFILE		"uImage"
+#define	CONFIG_BOOTARGS		"console=ttyAM0,115200n8 "
+#define	CONFIG_BOOTCOMMAND	"run bootcmd_net"
+#define	CONFIG_LOADADDR		0x42000000
+#define	CONFIG_SYS_LOAD_ADDR	CONFIG_LOADADDR
+
+#define	CONFIG_ENV_IS_NOWHERE	1
+
+#endif /* __M28_H__ */
-- 
1.7.5.4