mx31 litekit support

This patch adds support for the mx31 litekit board

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Guennadi Liakhovetski <lg@denx.de>

5 files changed, 278 insertions, 0 deletions

diff --git a/board/imx31_litekit/Makefile b/board/imx31_litekit/Makefile
new file mode 100644
index 0000000..aaaec69
--- /dev/null
+++ b/board/imx31_litekit/Makefile
@@ -0,0 +1,50 @@
+#
+# (C) Copyright 2000-2008
+# 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 Foundatio; 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	:= imx31_litekit.o
+SOBJS	:= lowlevel_init.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#######################################################################
+##
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
diff --git a/board/imx31_litekit/config.mk b/board/imx31_litekit/config.mk
new file mode 100644
index 0000000..d34dc02
--- /dev/null
+++ b/board/imx31_litekit/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0x87f00000
diff --git a/board/imx31_litekit/imx31_litekit.c b/board/imx31_litekit/imx31_litekit.c
new file mode 100644
index 0000000..8c6e6f5
--- /dev/null
+++ b/board/imx31_litekit/imx31_litekit.c
@@ -0,0 +1,65 @@
+/*
+ *
+ * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.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 <common.h>
+#include <asm/arch/mx31.h>
+#include <asm/arch/mx31-regs.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+	return 0;
+}
+
+int board_init(void)
+{
+	__REG(CSCR_U(0)) = 0x0000cf03; /* CS0: Nor Flash */
+	__REG(CSCR_L(0)) = 0xa0330d01;
+	__REG(CSCR_A(0)) = 0x00220800;
+
+	__REG(CSCR_U(4)) = 0x0000dcf6; /* CS4: Network Controller */
+	__REG(CSCR_L(4)) = 0x444a4541;
+	__REG(CSCR_A(4)) = 0x44443302;
+
+	/* setup pins for UART1 */
+	mx31_gpio_mux(MUX_RXD1__UART1_RXD_MUX);
+	mx31_gpio_mux(MUX_TXD1__UART1_TXD_MUX);
+	mx31_gpio_mux(MUX_RTS1__UART1_RTS_B);
+	mx31_gpio_mux(MUX_RTS1__UART1_CTS_B);
+
+	gd->bd->bi_arch_number = 447;		/* board id for linux */
+	gd->bd->bi_boot_params = (0x80000100);	/* adress of boot parameters */
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	printf("Board: i.MX31 Litekit\n");
+	return 0;
+}
diff --git a/board/imx31_litekit/lowlevel_init.S b/board/imx31_litekit/lowlevel_init.S
new file mode 100644
index 0000000..74d6067
--- /dev/null
+++ b/board/imx31_litekit/lowlevel_init.S
@@ -0,0 +1,103 @@
+/*
+ *
+ * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.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 <asm/arch/mx31-regs.h>
+
+.macro REG reg, val
+	ldr r2, =\reg
+	ldr r3, =\val
+	str r3, [r2]
+.endm
+
+.macro REG8 reg, val
+	ldr r2, =\reg
+	ldr r3, =\val
+	strb r3, [r2]
+.endm
+
+.macro DELAY loops
+	ldr r2, =\loops
+1:
+	subs	r2, r2, #1
+	nop
+	bcs 1b
+.endm
+
+.globl lowlevel_init
+lowlevel_init:
+
+	REG	IPU_CONF, IPU_CONF_DI_EN
+	REG	CCM_CCMR, 0x074B0BF5
+
+	DELAY 0x40000
+
+	REG	CCM_CCMR, 0x074B0BF5 | CCMR_MPE
+	REG	CCM_CCMR, (0x074B0BF5 | CCMR_MPE) & ~CCMR_MDS
+
+	REG	CCM_PDR0, PDR0_CSI_PODF(0x1ff) | PDR0_PER_PODF(7) |	\
+				PDR0_HSP_PODF(2) | PDR0_NFC_PODF(6) |	\
+				PDR0_IPG_PODF(1) | PDR0_MAX_PODF(2) |	\
+				PDR0_MCU_PODF(0)
+
+	REG	CCM_MPCTL, PLL_PD(0) | PLL_MFD(0x33) | PLL_MFI(7) |	\
+							PLL_MFN(0x23)
+	REG	CCM_SPCTL, PLL_PD(1) | PLL_MFD(4) | PLL_MFI(12) | PLL_MFN(1)
+
+	REG	0x43FAC26C, 0 /* SDCLK */
+	REG	0x43FAC270, 0 /* CAS */
+	REG	0x43FAC274, 0 /* RAS */
+	REG	0x43FAC27C, 0x1000 /* CS2 	CSD0) */
+	REG	0x43FAC284, 0 /* DQM3 */
+		/* DQM2, DQM1, DQM0, SD31-SD0, A25-A0, MA10 0x288..0x2DC) */
+	REG	0x43FAC288, 0
+	REG	0x43FAC28C, 0
+	REG	0x43FAC290, 0
+	REG	0x43FAC294, 0
+	REG	0x43FAC298, 0
+	REG	0x43FAC29C, 0
+	REG	0x43FAC2A0, 0
+	REG	0x43FAC2A4, 0
+	REG	0x43FAC2A8, 0
+	REG	0x43FAC2AC, 0
+	REG	0x43FAC2B0, 0
+	REG	0x43FAC2B4, 0
+	REG	0x43FAC2B8, 0
+	REG	0x43FAC2BC, 0
+	REG	0x43FAC2C0, 0
+	REG	0x43FAC2C4, 0
+	REG	0x43FAC2C8, 0
+	REG	0x43FAC2CC, 0
+	REG	0x43FAC2D0, 0
+	REG	0x43FAC2D4, 0
+	REG	0x43FAC2D8, 0
+	REG	0x43FAC2DC, 0
+	REG	0xB8001010, 0x00000004
+	REG	0xB8001004, 0x006ac73a
+	REG	0xB8001000, 0x92100000
+	REG	0x80000f00, 0x12344321
+	REG	0xB8001000, 0xa2100000
+	REG	0x80000000, 0x12344321
+	REG	0x80000000, 0x12344321
+	REG	0xB8001000, 0xb2100000
+	REG8	0x80000033, 0xda
+	REG8	0x81000000, 0xff
diff --git a/board/imx31_litekit/u-boot.lds b/board/imx31_litekit/u-boot.lds
new file mode 100644
index 0000000..1460adc
--- /dev/null
+++ b/board/imx31_litekit/u-boot.lds
@@ -0,0 +1,59 @@
+/*
+ * January 2004 - Changed to support H4 device
+ * Copyright (c) 2004 Texas Instruments
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@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
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text	   :
+	{
+	  cpu/arm1136/start.o	(.text)
+	  *(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(.rodata) }
+
+	. = ALIGN(4);
+	.data : { *(.data) }
+
+	. = ALIGN(4);
+	.got : { *(.got) }
+
+	. = .;
+	__u_boot_cmd_start = .;
+	.u_boot_cmd : { *(.u_boot_cmd) }
+	__u_boot_cmd_end = .;
+
+	. = ALIGN(4);
+	__bss_start = .;
+	.bss : { *(.bss) }
+	_end = .;
+}