MIPS: Jz4740: Add qi_lb60 board support

Add support for the qi_lb60 (a.k.a QI Ben NanoNote) clamshell device
from Qi hardware:

http://en.qi-hardware.com/wiki/Ben_NanoNote
http://en.qi-hardware.com/wiki/Main_Page
http://en.wikipedia.org/wiki/Qi_hardware

This Jz4740-based clamshell device does not use NOR flash to boot.
The initial bring-up assumes that U-Boot is directly loaded into SDRAM
using USB boot tool, and starts from 0x80100000.

About USB boot tool
-------------------

Jz4740 is one of the XBurst processors with USB boot functionality
supported.  The CPU can boot from a small ROM in the LSI, initialize
CPU and USB module, then wait for USB commands from the USB host.
We can send 8 KB binary data to the CPU cache using USB boot tool.

USB boot tool is available to the public at Ingenic website.  Also
there is an alternative Debian package named xburst-tools.

Signed-off-by: Xiangfu Liu <xiangfu@openmobilefree.net>
Acked-by: Daniel <zpxu@ingenic.cn>
Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>

4 files changed, 241 insertions, 0 deletions

diff --git a/board/qi/qi_lb60/Makefile b/board/qi/qi_lb60/Makefile
new file mode 100644
index 0000000..2f5b4be
--- /dev/null
+++ b/board/qi/qi_lb60/Makefile
@@ -0,0 +1,45 @@
+#
+# (C) Copyright 2006
+# Ingenic Semiconductor, <jlwei@ingenic.cn>
+#
+# 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	:= $(BOARD).o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+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/qi/qi_lb60/config.mk b/board/qi/qi_lb60/config.mk
new file mode 100644
index 0000000..858e6a2
--- /dev/null
+++ b/board/qi/qi_lb60/config.mk
@@ -0,0 +1,31 @@
+#
+# (C) Copyright 2006 Qi Hardware, Inc.
+# Author: Xiangfu Liu <xiangfu.z@gmail.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
+#
+
+#
+# Qi Hardware, Inc. Ben NanoNote (QI_LB60)
+#
+
+ifndef TEXT_BASE
+# ROM version
+# TEXT_BASE = 0x88000000
+
+# RAM version
+TEXT_BASE = 0x80100000
+endif
diff --git a/board/qi/qi_lb60/qi_lb60.c b/board/qi/qi_lb60/qi_lb60.c
new file mode 100644
index 0000000..3583d01
--- /dev/null
+++ b/board/qi/qi_lb60/qi_lb60.c
@@ -0,0 +1,104 @@
+/*
+ * Authors: Xiangfu Liu <xiangfu@sharism.cc>
+ *
+ * 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
+ * 3 of the License, or (at your option) any later version.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/jz4740.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void gpio_init(void)
+{
+	unsigned int i;
+
+	/* Initialize NAND Flash Pins */
+	__gpio_as_nand();
+
+	/* Initialize SDRAM pins */
+	__gpio_as_sdram_16bit_4720();
+
+	/* Initialize LCD pins */
+	__gpio_as_lcd_18bit();
+
+	/* Initialize MSC pins */
+	__gpio_as_msc();
+
+	/* Initialize Other pins */
+	for (i = 0; i < 7; i++) {
+		__gpio_as_input(GPIO_KEYIN_BASE + i);
+		__gpio_enable_pull(GPIO_KEYIN_BASE + i);
+	}
+
+	for (i = 0; i < 8; i++) {
+		__gpio_as_output(GPIO_KEYOUT_BASE + i);
+		__gpio_clear_pin(GPIO_KEYOUT_BASE + i);
+	}
+
+	__gpio_as_input(GPIO_KEYIN_8);
+	__gpio_enable_pull(GPIO_KEYIN_8);
+
+	/* enable the TP4, TP5 as UART0 */
+	__gpio_jtag_to_uart0();
+
+	__gpio_as_output(GPIO_AUDIO_POP);
+	__gpio_set_pin(GPIO_AUDIO_POP);
+
+	__gpio_as_output(GPIO_LCD_CS);
+	__gpio_clear_pin(GPIO_LCD_CS);
+
+	__gpio_as_output(GPIO_AMP_EN);
+	__gpio_clear_pin(GPIO_AMP_EN);
+
+	__gpio_as_output(GPIO_SDPW_EN);
+	__gpio_disable_pull(GPIO_SDPW_EN);
+	__gpio_clear_pin(GPIO_SDPW_EN);
+
+	__gpio_as_input(GPIO_SD_DETECT);
+	__gpio_disable_pull(GPIO_SD_DETECT);
+
+	__gpio_as_input(GPIO_USB_DETECT);
+	__gpio_enable_pull(GPIO_USB_DETECT);
+}
+
+static void cpm_init(void)
+{
+	struct jz4740_cpm *cpm = (struct jz4740_cpm *)JZ4740_CPM_BASE;
+	uint32_t reg = readw(&cpm->clkgr);
+
+	reg |=	CPM_CLKGR_IPU |
+		CPM_CLKGR_CIM |
+		CPM_CLKGR_I2C |
+		CPM_CLKGR_SSI |
+		CPM_CLKGR_UART1 |
+		CPM_CLKGR_SADC |
+		CPM_CLKGR_UHC |
+		CPM_CLKGR_UDC |
+		CPM_CLKGR_AIC1;
+
+	writew(reg, &cpm->clkgr);
+}
+
+int board_early_init_f(void)
+{
+	gpio_init();
+	cpm_init();
+	calc_clocks();	/* calc the clocks */
+	rtc_init();	/* init rtc on any reset */
+
+	return 0;
+}
+
+/* U-Boot common routines */
+int checkboard(void)
+{
+	printf("Board: Qi LB60 (Ingenic XBurst Jz4740 SoC, Speed %ld MHz)\n",
+	       gd->cpu_clk / 1000000);
+
+	return 0;
+}
diff --git a/board/qi/qi_lb60/u-boot.lds b/board/qi/qi_lb60/u-boot.lds
new file mode 100644
index 0000000..7317652
--- /dev/null
+++ b/board/qi/qi_lb60/u-boot.lds
@@ -0,0 +1,61 @@
+/*
+ * (C) Copyright 2006
+ * Ingenic Semiconductor, <jlwei@ingenic.cn>
+ *
+ * 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-tradlittlemips", "elf32-tradlittlemips", "elf32-tradlittlemips")
+
+OUTPUT_ARCH(mips)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text :
+	{
+	  *(.text*)
+	}
+
+	. = ALIGN(4);
+	.rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
+
+	. = ALIGN(4);
+	.data  : { *(.data*) }
+
+	. = .;
+	_gp = ALIGN(16) + 0x7ff0;
+
+	__got_start = .;
+	.got  : { *(.got) }
+	__got_end = .;
+
+	.sdata  : { *(.sdata*) }
+
+	__u_boot_cmd_start = .;
+	.u_boot_cmd : { *(.u_boot_cmd) }
+	__u_boot_cmd_end = .;
+
+	uboot_end_data = .;
+	num_got_entries = (__got_end - __got_start) >> 2;
+
+	. = ALIGN(4);
+	.sbss  : { *(.sbss*) }
+	.bss  : { *(.bss*) . = ALIGN(4); }
+	uboot_end = .;
+}