PXA: ZipitZ2 support

This patch adds support for Aeronix Zipit Z2 handheld.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>

5 files changed, 364 insertions, 0 deletions

diff --git a/board/zipitz2/Makefile b/board/zipitz2/Makefile
new file mode 100644
index 0000000..2673835
--- /dev/null
+++ b/board/zipitz2/Makefile
@@ -0,0 +1,54 @@
+
+#
+# Copyright (C) 2009
+# Marek Vasut <marek.vasut@gmail.com>
+#
+# Heavily based on pxa255_idp platform
+#
+# 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	:= zipitz2.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 $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/zipitz2/config.mk b/board/zipitz2/config.mk
new file mode 100644
index 0000000..1d650ac
--- /dev/null
+++ b/board/zipitz2/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0xa1000000
diff --git a/board/zipitz2/lowlevel_init.S b/board/zipitz2/lowlevel_init.S
new file mode 100644
index 0000000..82a52e8
--- /dev/null
+++ b/board/zipitz2/lowlevel_init.S
@@ -0,0 +1,40 @@
+/*
+ * Aeronix Zipit Z2 Lowlevel Hardware Initialization
+ *
+ * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.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 <config.h>
+#include <version.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/macro.h>
+
+.globl lowlevel_init
+lowlevel_init:
+	pxa_gpio_setup
+	pxa_wait_ticks	0x8000
+	pxa_mem_setup
+	pxa_wakeup
+	pxa_intr_setup
+	pxa_clock_setup
+
+	mov	pc, lr
diff --git a/board/zipitz2/u-boot.lds b/board/zipitz2/u-boot.lds
new file mode 100644
index 0000000..fb4358b
--- /dev/null
+++ b/board/zipitz2/u-boot.lds
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2000-2005
+ * 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
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text      :
+	{
+	  cpu/pxa/start.o	(.text)
+	  *(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.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 (NOLOAD) : { *(.bss) . = ALIGN(4); }
+	_end = .;
+}
diff --git a/board/zipitz2/zipitz2.c b/board/zipitz2/zipitz2.c
new file mode 100644
index 0000000..14d1d76
--- /dev/null
+++ b/board/zipitz2/zipitz2.c
@@ -0,0 +1,213 @@
+/*
+ * Copyright (C) 2009
+ * Marek Vasut <marek.vasut@gmail.com>
+ *
+ * Heavily based on pxa255_idp platform
+ *
+ * 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 <command.h>
+#include <serial.h>
+#include <asm/arch/hardware.h>
+#include <spi.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef	CONFIG_CMD_SPI
+void lcd_start(void);
+#else
+inline void lcd_start(void) {};
+#endif
+
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+int board_init (void)
+{
+	/* memory and cpu-speed are setup before relocation */
+	/* so we do _nothing_ here */
+
+	/* arch number of Lubbock-Board */
+	gd->bd->bi_arch_number = MACH_TYPE_ZIPIT2;
+
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = 0xa0000100;
+
+	/* Enable LCD */
+	lcd_start();
+
+	return 0;
+}
+
+int board_late_init(void)
+{
+	setenv("stdout", "serial");
+	setenv("stderr", "serial");
+	return 0;
+}
+
+struct serial_device *default_serial_console (void)
+{
+	return &serial_stuart_device;
+}
+
+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;
+}
+
+#ifdef	CONFIG_CMD_SPI
+
+struct {
+	unsigned char	reg;
+	unsigned short	data;
+	unsigned char	mdelay;
+} lcd_data[] = {
+	{ 0x07,	0x0000,	0 },
+	{ 0x13,	0x0000,	10 },
+	{ 0x11,	0x3004,	0 },
+	{ 0x14,	0x200F,	0 },
+	{ 0x10,	0x1a20,	0 },
+	{ 0x13,	0x0040,	50 },
+	{ 0x13,	0x0060,	0 },
+	{ 0x13,	0x0070,	200 },
+	{ 0x01,	0x0127,	0 },
+	{ 0x02,	0x0700,	0 },
+	{ 0x03,	0x1030,	0 },
+	{ 0x08,	0x0208,	0 },
+	{ 0x0B,	0x0620,	0 },
+	{ 0x0C,	0x0110,	0 },
+	{ 0x30,	0x0120,	0 },
+	{ 0x31,	0x0127,	0 },
+	{ 0x32,	0x0000,	0 },
+	{ 0x33,	0x0503,	0 },
+	{ 0x34,	0x0727,	0 },
+	{ 0x35,	0x0124,	0 },
+	{ 0x36,	0x0706,	0 },
+	{ 0x37,	0x0701,	0 },
+	{ 0x38,	0x0F00,	0 },
+	{ 0x39,	0x0F00,	0 },
+	{ 0x40,	0x0000,	0 },
+	{ 0x41,	0x0000,	0 },
+	{ 0x42,	0x013f,	0 },
+	{ 0x43,	0x0000,	0 },
+	{ 0x44,	0x013f,	0 },
+	{ 0x45,	0x0000,	0 },
+	{ 0x46,	0xef00,	0 },
+	{ 0x47,	0x013f,	0 },
+	{ 0x48,	0x0000,	0 },
+	{ 0x07,	0x0015,	30 },
+	{ 0x07,	0x0017,	0 },
+	{ 0x20,	0x0000,	0 },
+	{ 0x21,	0x0000,	0 },
+	{ 0x22,	0x0000,	0 },
+};
+
+void zipitz2_spi_sda(int set)
+{
+	/* GPIO 13 */
+	if (set)
+		GPSR0 = (1 << 13);
+	else
+		GPCR0 = (1 << 13);
+}
+
+void zipitz2_spi_scl(int set)
+{
+	/* GPIO 22 */
+	if (set)
+		GPCR0 = (1 << 22);
+	else
+		GPSR0 = (1 << 22);
+}
+
+unsigned char zipitz2_spi_read(void)
+{
+	/* GPIO 40 */
+	return !!(GPLR1 & (1 << 8));
+}
+
+int spi_cs_is_valid(unsigned int bus, unsigned int cs)
+{
+	/* Always valid */
+	return 1;
+}
+
+void spi_cs_activate(struct spi_slave *slave)
+{
+	/* GPIO 88 low */
+	GPCR2 = (1 << 24);
+}
+
+void spi_cs_deactivate(struct spi_slave *slave)
+{
+	/* GPIO 88 high */
+	GPSR2 = (1 << 24);
+
+}
+
+void lcd_start(void)
+{
+	int i;
+	unsigned char reg[3] = { 0x74, 0x00, 0 };
+	unsigned char data[3] = { 0x76, 0, 0 };
+	unsigned char dummy[3] = { 0, 0, 0 };
+
+	/* PWM2 AF */
+	GAFR0_L |= 0x00800000;
+	/* Enable clock to all PWM */
+	CKEN |= 0x3;
+	/* Configure PWM2 */
+	PWM_CTRL2 = 0x4f;
+	PWM_PWDUTY2 = 0x2ff;
+	PWM_PERVAL2 = 792;
+
+	/* Toggle the reset pin to reset the LCD */
+	GPSR0 = (1 << 19);
+	udelay(100000);
+	GPCR0 = (1 << 19);
+	udelay(20000);
+	GPSR0 = (1 << 19);
+	udelay(20000);
+
+	/* Program the LCD init sequence */
+	for (i = 0; i < sizeof(lcd_data) / sizeof(lcd_data[0]); i++) {
+		reg[0] = 0x74;
+		reg[1] = 0x0;
+		reg[2] = lcd_data[i].reg;
+		spi_xfer(NULL, 24, reg, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
+
+		data[0] = 0x76;
+		data[1] = lcd_data[i].data >> 8;
+		data[2] = lcd_data[i].data & 0xff;
+		spi_xfer(NULL, 24, data, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
+
+		if (lcd_data[i].mdelay)
+			udelay(lcd_data[i].mdelay * 1000);
+	}
+
+	GPSR0 = (1 << 11);
+}
+#endif