openwrt_chaos_calmer/package/boot/uboot-xburst/patches/0001-qi_lb60-add-nand-spl-support.patch

From 0329cf7965956a5a7044827e0ce88ae8d5150e54 Mon Sep 17 00:00:00 2001
From: Xiangfu <xiangfu@openmobilefree.net>
Date: Fri, 12 Oct 2012 09:46:58 +0800
Subject: [PATCH 1/6] qi_lb60: add nand spl support

  The JZ4740 CPU can load 8KB from two different addresses:
   1. the normal area up to 8KB starting from NAND flash address 0x00000000
   2. the backup area up to 8KB starting from NAND flash address 0x00002000

Signed-off-by: Xiangfu <xiangfu@openmobilefree.net>
---
 Makefile                          |   12 +++
 arch/mips/cpu/xburst/Makefile     |    7 +-
 arch/mips/cpu/xburst/cpu.c        |    4 +
 arch/mips/cpu/xburst/jz4740.c     |   82 +++++++----------
 arch/mips/cpu/xburst/spl/Makefile |   47 ++++++++++
 arch/mips/cpu/xburst/spl/start.S  |   63 +++++++++++++
 board/qi/qi_lb60/Makefile         |    4 +
 board/qi/qi_lb60/qi_lb60-spl.c    |   30 +++++++
 board/qi/qi_lb60/qi_lb60.c        |    8 +-
 board/qi/qi_lb60/u-boot-spl.lds   |   61 +++++++++++++
 drivers/mtd/nand/jz4740_nand.c    |   39 ++++++++-
 include/configs/qi_lb60.h         |  175 ++++++++++++++++++-------------------
 12 files changed, 386 insertions(+), 146 deletions(-)
 create mode 100644 arch/mips/cpu/xburst/spl/Makefile
 create mode 100644 arch/mips/cpu/xburst/spl/start.S
 create mode 100644 board/qi/qi_lb60/qi_lb60-spl.c
 create mode 100644 board/qi/qi_lb60/u-boot-spl.lds

diff --git a/Makefile b/Makefile
index 34d9075..a22778e 100644
--- a/Makefile
+++ b/Makefile
@@ -393,6 +393,10 @@ ALL-y += $(obj)u-boot-nodtb-tegra.bin
 endif
 endif
 
+ifeq ($(CPU),xburst)
+ALL-y += $(obj)u-boot-xburst.bin
+endif
+
 all:		$(ALL-y) $(SUBDIR_EXAMPLES)
 
 $(obj)u-boot.dtb:	$(obj)u-boot
@@ -506,6 +510,14 @@ $(obj)u-boot-nodtb-tegra.bin:	$(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
 endif
 endif
 
+ifeq ($(CPU),xburst)
+$(obj)u-boot-xburst.bin:	$(obj)spl/u-boot-spl.bin $(obj)u-boot.bin
+	        dd if=$(obj)spl/u-boot-spl.bin of=$(obj)spl/u-boot-pad.bin conv=sync bs=8192 count=1
+		dd if=$(obj)spl/u-boot-spl.bin of=$(obj)spl/u-boot-pad.bin conv=sync,notrunc oflag=append bs=8192 count=1
+	        tr '\0' '\377' < /dev/zero | dd of=$(obj)spl/u-boot-pad.bin conv=sync,notrunc oflag=append bs=16384 count=1
+	        cat $(obj)spl/u-boot-pad.bin u-boot.bin > $@
+endif
+
 ifeq ($(CONFIG_SANDBOX),y)
 GEN_UBOOT = \
 		cd $(LNDIR) && $(CC) $(SYMS) -T $(obj)u-boot.lds \
diff --git a/arch/mips/cpu/xburst/Makefile b/arch/mips/cpu/xburst/Makefile
index b1f2ae4..ec35e55 100644
--- a/arch/mips/cpu/xburst/Makefile
+++ b/arch/mips/cpu/xburst/Makefile
@@ -24,9 +24,12 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(CPU).o
 
+COBJS-y	= cpu.o jz_serial.o
+
+ifneq ($(CONFIG_SPL_BUILD),y)
 START	= start.o
-SOBJS-y	=
-COBJS-y	= cpu.o timer.o jz_serial.o
+COBJS-y += timer.o
+endif
 
 COBJS-$(CONFIG_JZ4740) += jz4740.o
 
diff --git a/arch/mips/cpu/xburst/cpu.c b/arch/mips/cpu/xburst/cpu.c
index ddcbfaa..1432838 100644
--- a/arch/mips/cpu/xburst/cpu.c
+++ b/arch/mips/cpu/xburst/cpu.c
@@ -42,6 +42,8 @@
 		:			\
 		: "i" (op), "R" (*(unsigned char *)(addr)))
 
+#ifndef CONFIG_SPL_BUILD
+
 void __attribute__((weak)) _machine_restart(void)
 {
 	struct jz4740_wdt *wdt = (struct jz4740_wdt *)JZ4740_WDT_BASE;
@@ -109,6 +111,8 @@ void invalidate_dcache_range(ulong start_addr, ulong stop)
 		cache_op(Hit_Invalidate_D, addr);
 }
 
+#endif
+
 void flush_icache_all(void)
 {
 	u32 addr, t = 0;
diff --git a/arch/mips/cpu/xburst/jz4740.c b/arch/mips/cpu/xburst/jz4740.c
index c0b9817..8816aa3 100644
--- a/arch/mips/cpu/xburst/jz4740.c
+++ b/arch/mips/cpu/xburst/jz4740.c
@@ -32,31 +32,19 @@ int disable_interrupts(void)
 	return 0;
 }
 
-/*
- * PLL output clock = EXTAL * NF / (NR * NO)
- * NF = FD + 2, NR = RD + 2
- * NO = 1 (if OD = 0), NO = 2 (if OD = 1 or 2), NO = 4 (if OD = 3)
- */
 void pll_init(void)
 {
 	struct jz4740_cpm *cpm = (struct jz4740_cpm *)JZ4740_CPM_BASE;
 
-	register unsigned int cfcr, plcr1;
-	int n2FR[33] = {
-		0, 0, 1, 2, 3, 0, 4, 0, 5, 0, 0, 0, 6, 0, 0, 0,
-		7, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0,
-		9
-	};
-	int div[5] = {1, 3, 3, 3, 3}; /* divisors of I:S:P:L:M */
-	int nf, pllout2;
+	register unsigned int cfcr, plcr;
+	unsigned int nf, pllout2;
 
 	cfcr =	CPM_CPCCR_CLKOEN |
-		CPM_CPCCR_PCS |
-		(n2FR[div[0]] << CPM_CPCCR_CDIV_BIT) |
-		(n2FR[div[1]] << CPM_CPCCR_HDIV_BIT) |
-		(n2FR[div[2]] << CPM_CPCCR_PDIV_BIT) |
-		(n2FR[div[3]] << CPM_CPCCR_MDIV_BIT) |
-		(n2FR[div[4]] << CPM_CPCCR_LDIV_BIT);
+		(0 << CPM_CPCCR_CDIV_BIT) |
+		(2 << CPM_CPCCR_HDIV_BIT) |
+		(2 << CPM_CPCCR_PDIV_BIT) |
+		(2 << CPM_CPCCR_MDIV_BIT) |
+		(2 << CPM_CPCCR_LDIV_BIT);
 
 	pllout2 = (cfcr & CPM_CPCCR_PCS) ?
 		CONFIG_SYS_CPU_SPEED : (CONFIG_SYS_CPU_SPEED / 2);
@@ -65,15 +53,18 @@ void pll_init(void)
 	writel(pllout2 / 48000000 - 1, &cpm->uhccdr);
 
 	nf = CONFIG_SYS_CPU_SPEED * 2 / CONFIG_SYS_EXTAL;
-	plcr1 = ((nf - 2) << CPM_CPPCR_PLLM_BIT) | /* FD */
+	plcr = ((nf - 2) << CPM_CPPCR_PLLM_BIT) | /* FD */
 		(0 << CPM_CPPCR_PLLN_BIT) |	/* RD=0, NR=2 */
 		(0 << CPM_CPPCR_PLLOD_BIT) |	/* OD=0, NO=1 */
-		(0x20 << CPM_CPPCR_PLLST_BIT) |	/* PLL stable time */
+		(0x32 << CPM_CPPCR_PLLST_BIT) |	/* PLL stable time */
 		CPM_CPPCR_PLLEN;		/* enable PLL */
 
 	/* init PLL */
 	writel(cfcr, &cpm->cpccr);
-	writel(plcr1, &cpm->cppcr);
+	writel(plcr, &cpm->cppcr);
+
+	while (!(readl(&cpm->cppcr) & CPM_CPPCR_PLLS))
+		;
 }
 
 void sdram_init(void)
@@ -92,26 +83,12 @@ void sdram_init(void)
 		2 << EMC_DMCR_TCL_BIT	/* CAS latency is 3 */
 	};
 
-	int div[] = {1, 2, 3, 4, 6, 8, 12, 16, 24, 32};
-
 	cpu_clk = CONFIG_SYS_CPU_SPEED;
-	mem_clk = cpu_clk * div[__cpm_get_cdiv()] / div[__cpm_get_mdiv()];
+	mem_clk = 84000000;
 
 	writel(0, &emc->bcr);	/* Disable bus release */
 	writew(0, &emc->rtcsr);	/* Disable clock for counting */
 
-	/* Fault DMCR value for mode register setting*/
-#define SDRAM_ROW0	11
-#define SDRAM_COL0	8
-#define SDRAM_BANK40	0
-
-	dmcr0 = ((SDRAM_ROW0 - 11) << EMC_DMCR_RA_BIT) |
-		((SDRAM_COL0 - 8) << EMC_DMCR_CA_BIT) |
-		(SDRAM_BANK40 << EMC_DMCR_BA_BIT) |
-		(SDRAM_BW16 << EMC_DMCR_BW_BIT) |
-		EMC_DMCR_EPIN |
-		cas_latency_dmcr[((SDRAM_CASL == 3) ? 1 : 0)];
-
 	/* Basic DMCR value */
 	dmcr = ((SDRAM_ROW - 11) << EMC_DMCR_RA_BIT) |
 		((SDRAM_COL - 8) << EMC_DMCR_CA_BIT) |
@@ -128,31 +105,31 @@ void sdram_init(void)
 	if (tmp > 11)
 		tmp = 11;
 	dmcr |= (tmp - 4) << EMC_DMCR_TRAS_BIT;
-	tmp = SDRAM_RCD / ns;
 
+	tmp = SDRAM_RCD / ns;
 	if (tmp > 3)
 		tmp = 3;
 	dmcr |= tmp << EMC_DMCR_RCD_BIT;
-	tmp = SDRAM_TPC / ns;
 
+	tmp = SDRAM_TPC / ns;
 	if (tmp > 7)
 		tmp = 7;
 	dmcr |= tmp << EMC_DMCR_TPC_BIT;
-	tmp = SDRAM_TRWL / ns;
 
+	tmp = SDRAM_TRWL / ns;
 	if (tmp > 3)
 		tmp = 3;
 	dmcr |= tmp << EMC_DMCR_TRWL_BIT;
-	tmp = (SDRAM_TRAS + SDRAM_TPC) / ns;
 
+	tmp = (SDRAM_TRAS + SDRAM_TPC) / ns;
 	if (tmp > 14)
 		tmp = 14;
 	dmcr |= ((tmp + 1) >> 1) << EMC_DMCR_TRC_BIT;
 
 	/* SDRAM mode value */
-	sdmode = EMC_SDMR_BT_SEQ |
-		 EMC_SDMR_OM_NORMAL |
-		 EMC_SDMR_BL_4 |
+	sdmode = EMC_SDMR_BT_SEQ	|
+		 EMC_SDMR_OM_NORMAL	|
+		 EMC_SDMR_BL_4		|
 		 cas_latency_sdmr[((SDRAM_CASL == 3) ? 1 : 0)];
 
 	/* Stage 1. Precharge all banks by writing SDMR with DMCR.MRSET=0 */
@@ -172,8 +149,8 @@ void sdram_init(void)
 	if (tmp > 0xff)
 		tmp = 0xff;
 	writew(tmp, &emc->rtcor);
+
 	writew(0, &emc->rtcnt);
-	/* Divisor is 64, CKO/64 */
 	writew(EMC_RTCSR_CKS_64, &emc->rtcsr);
 
 	/* Wait for number of auto-refresh cycles */
@@ -182,13 +159,17 @@ void sdram_init(void)
 		;
 
 	/* Stage 3. Mode Register Set */
+	dmcr0 = (11 << EMC_DMCR_RA_BIT)	|
+		(8 << EMC_DMCR_CA_BIT)	|
+		(0 << EMC_DMCR_BA_BIT)	|
+		EMC_DMCR_EPIN		|
+		(SDRAM_BW16 << EMC_DMCR_BW_BIT) |
+		cas_latency_dmcr[((SDRAM_CASL == 3) ? 1 : 0)];
 	writel(dmcr0 | EMC_DMCR_RFSH | EMC_DMCR_MRSET, &emc->dmcr);
 	writeb(0, JZ4740_EMC_SDMR0 | sdmode);
 
 	/* Set back to basic DMCR value */
 	writel(dmcr | EMC_DMCR_RFSH | EMC_DMCR_MRSET, &emc->dmcr);
-
-	/* everything is ok now */
 }
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -232,9 +213,10 @@ void rtc_init(void)
 phys_size_t initdram(int board_type)
 {
 	struct jz4740_emc *emc = (struct jz4740_emc *)JZ4740_EMC_BASE;
-	u32 dmcr;
-	u32 rows, cols, dw, banks;
-	ulong size;
+
+	unsigned int dmcr;
+	unsigned int rows, cols, dw, banks;
+	unsigned long size;
 
 	dmcr = readl(&emc->dmcr);
 	rows = 11 + ((dmcr & EMC_DMCR_RA_MASK) >> EMC_DMCR_RA_BIT);
diff --git a/arch/mips/cpu/xburst/spl/Makefile b/arch/mips/cpu/xburst/spl/Makefile
new file mode 100644
index 0000000..f45e8c8
--- /dev/null
+++ b/arch/mips/cpu/xburst/spl/Makefile
@@ -0,0 +1,47 @@
+#
+# Copyright (C) 2011 Xiangfu Liu <xiangfu@openmobilefree.net>
+#
+# 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	= $(obj)lib$(CPU).o
+
+START	= start.o
+SOBJS-y	=
+COBJS-y	=
+
+SRCS	:= $(START:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
+START	:= $(addprefix $(obj),$(START))
+
+all:	$(obj).depend $(START) $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/mips/cpu/xburst/spl/start.S b/arch/mips/cpu/xburst/spl/start.S
new file mode 100644
index 0000000..e31c4c8
--- /dev/null
+++ b/arch/mips/cpu/xburst/spl/start.S
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2010 Xiangfu Liu <xiangfu@openmobilefree.net>
+ *
+ * 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 3 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/regdef.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/cacheops.h>
+
+#include <asm/jz4740.h>
+
+	.set noreorder
+
+	.globl _start
+	.text
+_start:
+	.word JZ4740_NANDBOOT_CFG /* fetched during NAND Boot */
+reset:
+	/*
+	 * STATUS register
+	 * CU0=UM=EXL=IE=0, BEV=ERL=1, IP2~7=1
+	 */
+	li	t0, 0x0040FC04
+	mtc0	t0, CP0_STATUS
+	/*
+	 * CAUSE register
+	 * IV=1, use the specical interrupt vector (0x200)
+	 */
+	li	t1, 0x00800000
+	mtc0	t1, CP0_CAUSE
+
+	bal     1f
+	 nop
+	.word   _GLOBAL_OFFSET_TABLE_
+1:
+	move    gp, ra
+	lw      t1, 0(ra)
+	move	gp, t1
+
+	la	sp, 0x80004000
+	la	t9, nand_spl_boot
+	j	t9
+	nop
diff --git a/board/qi/qi_lb60/Makefile b/board/qi/qi_lb60/Makefile
index 5dae11b..e399246 100644
--- a/board/qi/qi_lb60/Makefile
+++ b/board/qi/qi_lb60/Makefile
@@ -22,7 +22,11 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).o
 
+ifeq ($(CONFIG_SPL_BUILD),y)
+COBJS	:= $(BOARD)-spl.o
+else
 COBJS	:= $(BOARD).o
+endif
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/board/qi/qi_lb60/qi_lb60-spl.c b/board/qi/qi_lb60/qi_lb60-spl.c
new file mode 100644
index 0000000..3fe3fa3
--- /dev/null
+++ b/board/qi/qi_lb60/qi_lb60-spl.c
@@ -0,0 +1,30 @@
+/*
+ * Authors: Xiangfu Liu <xiangfu@openmobilefree.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 <nand.h>
+#include <asm/io.h>
+#include <asm/jz4740.h>
+
+void nand_spl_boot(void)
+{
+	__gpio_as_sdram_16bit_4720();
+	__gpio_as_uart0();
+	__gpio_jtag_to_uart0();
+
+	serial_init();
+
+	pll_init();
+	sdram_init();
+
+	nand_init();
+
+	puts("\nQi LB60 SPL: Starting U-Boot ...\n");
+	nand_boot();
+}
diff --git a/board/qi/qi_lb60/qi_lb60.c b/board/qi/qi_lb60/qi_lb60.c
index d975209..3bd4e2f 100644
--- a/board/qi/qi_lb60/qi_lb60.c
+++ b/board/qi/qi_lb60/qi_lb60.c
@@ -1,5 +1,5 @@
 /*
- * Authors: Xiangfu Liu <xiangfu@sharism.cc>
+ * Authors: Xiangfu Liu <xiangfu@openmobilefree.net>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -97,8 +97,10 @@ int board_early_init_f(void)
 /* U-Boot common routines */
 int checkboard(void)
 {
-	printf("Board: Qi LB60 (Ingenic XBurst Jz4740 SoC, Speed %ld MHz)\n",
-	       gd->cpu_clk / 1000000);
+	printf("Board: Qi LB60 (Ingenic XBurst Jz4740 SoC)\n");
+	printf(" CPU: %ld\n", gd->cpu_clk);
+	printf(" MEM: %ld\n", gd->mem_clk);
+	printf(" DEV: %ld\n", gd->dev_clk);
 
 	return 0;
 }
diff --git a/board/qi/qi_lb60/u-boot-spl.lds b/board/qi/qi_lb60/u-boot-spl.lds
new file mode 100644
index 0000000..930537f
--- /dev/null
+++ b/board/qi/qi_lb60/u-boot-spl.lds
@@ -0,0 +1,61 @@
+/*
+ * (C) Copyright 2012 Xiangfu Liu <xiangfu@openmobilefree.net>
+ *
+ * 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
+{
+	. = 0x80000000;
+	. = ALIGN(4);
+	.text :
+	{
+	  *(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata  : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
+
+	. = ALIGN(4);
+	.data  : { *(.data) }
+
+	. = ALIGN(4);
+	.sdata  : { *(.sdata) }
+
+	_gp = ALIGN(16);
+
+	__got_start = .;
+	.got  : { *(.got) }
+	__got_end = .;
+
+	. = .;
+	__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) }
+	uboot_end = .;
+}
+ASSERT(uboot_end <= 0x80002000, "NAND bootstrap too big");
diff --git a/drivers/mtd/nand/jz4740_nand.c b/drivers/mtd/nand/jz4740_nand.c
index 3ec34f3..24a4921 100644
--- a/drivers/mtd/nand/jz4740_nand.c
+++ b/drivers/mtd/nand/jz4740_nand.c
@@ -15,6 +15,9 @@
 #include <asm/io.h>
 #include <asm/jz4740.h>
 
+#ifdef CONFIG_SPL_BUILD
+#define printf(s) puts(s)
+#endif
 #define JZ_NAND_DATA_ADDR ((void __iomem *)0xB8000000)
 #define JZ_NAND_CMD_ADDR (JZ_NAND_DATA_ADDR + 0x8000)
 #define JZ_NAND_ADDR_ADDR (JZ_NAND_DATA_ADDR + 0x10000)
@@ -176,7 +179,7 @@ static int jz_nand_rs_correct_data(struct mtd_info *mtd, u_char *dat,
 		for (k = 0; k < 9; k++)
 			writeb(read_ecc[k], &emc->nfpar[k]);
 	}
-	/* Set PRDY */
+
 	writel(readl(&emc->nfecr) | EMC_NFECR_PRDY, &emc->nfecr);
 
 	/* Wait for completion */
@@ -184,7 +187,7 @@ static int jz_nand_rs_correct_data(struct mtd_info *mtd, u_char *dat,
 		status = readl(&emc->nfints);
 	} while (!(status & EMC_NFINTS_DECF));
 
-	/* disable ecc */
+	/* Disable ECC */
 	writel(readl(&emc->nfecr) & ~EMC_NFECR_ECCE, &emc->nfecr);
 
 	/* Check decoding */
@@ -192,7 +195,7 @@ static int jz_nand_rs_correct_data(struct mtd_info *mtd, u_char *dat,
 		return 0;
 
 	if (status & EMC_NFINTS_UNCOR) {
-		printf("uncorrectable ecc\n");
+		printf("JZ4740 uncorrectable ECC\n");
 		return -1;
 	}
 
@@ -230,6 +233,32 @@ static int jz_nand_rs_correct_data(struct mtd_info *mtd, u_char *dat,
 	return errcnt;
 }
 
+#ifdef CONFIG_SPL_BUILD
+static void jz_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
+{
+	int i;
+	struct nand_chip *this = mtd->priv;
+
+#if (JZ4740_NANDBOOT_CFG == JZ4740_NANDBOOT_B16R3) || \
+	(JZ4740_NANDBOOT_CFG == JZ4740_NANDBOOT_B16R2)
+	for (i = 0; i < len; i += 2)
+		buf[i] = readw(this->IO_ADDR_R);
+#elif (JZ4740_NANDBOOT_CFG == JZ4740_NANDBOOT_B8R3) || \
+	(JZ4740_NANDBOOT_CFG == JZ4740_NANDBOOT_B8R2)
+	for (i = 0; i < len; i++)
+		buf[i] = readb(this->IO_ADDR_R);
+#else
+	#error JZ4740_NANDBOOT_CFG not defined or wrong
+#endif
+}
+
+static uint8_t jz_nand_read_byte(struct mtd_info *mtd)
+{
+	struct nand_chip *this = mtd->priv;
+	return readb(this->IO_ADDR_R);
+}
+#endif
+
 /*
  * Main initialization routine
  */
@@ -254,6 +283,10 @@ int board_nand_init(struct nand_chip *nand)
 	nand->ecc.size		= CONFIG_SYS_NAND_ECCSIZE;
 	nand->ecc.bytes		= CONFIG_SYS_NAND_ECCBYTES;
 	nand->ecc.layout	= &qi_lb60_ecclayout_2gb;
+#ifdef CONFIG_SPL_BUILD
+	nand->read_byte		= jz_nand_read_byte;
+	nand->read_buf		= jz_nand_read_buf;
+#endif
 	nand->chip_delay	= 50;
 	nand->options		= NAND_USE_FLASH_BBT;
 
diff --git a/include/configs/qi_lb60.h b/include/configs/qi_lb60.h
index 4bb5bbc..7bff444 100644
--- a/include/configs/qi_lb60.h
+++ b/include/configs/qi_lb60.h
@@ -1,5 +1,5 @@
 /*
- * Authors: Xiangfu Liu <xiangfu.z@gmail.com>
+ * Authors: Xiangfu Liu <xiangfu@openmobilefree.net>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -14,7 +14,6 @@
 #define CONFIG_SYS_LITTLE_ENDIAN
 #define CONFIG_JZSOC		/* Jz SoC */
 #define CONFIG_JZ4740		/* Jz4740 SoC */
-#define CONFIG_NAND_JZ4740
 
 #define CONFIG_SYS_CPU_SPEED	336000000	/* CPU clock: 336 MHz */
 #define CONFIG_SYS_EXTAL	12000000	/* EXTAL freq: 12 MHz */
@@ -24,24 +23,43 @@
 #define CONFIG_SYS_UART_BASE	JZ4740_UART0_BASE /* Base of the UART channel */
 #define CONFIG_BAUDRATE		57600
 
+#define CONFIG_BOOTP_MASK	(CONFIG_BOOTP_DEFAUL)
+#define CONFIG_BOOTDELAY	0
+#define CONFIG_BOOTARGS "mem=32M console=tty0 console=ttyS0,57600n8 ubi.mtd=2 rootfstype=ubifs root=ubi0:rootfs rw rootwait"
+#define CONFIG_BOOTCOMMAND	"nand read 0x80600000 0x400000 0x280000;bootm"
+
+/*
+ * Miscellaneous configurable options
+ */
+#define CONFIG_SYS_SDRAM_BASE		0x80000000	/* Cached addr */
+#define CONFIG_SYS_INIT_SP_OFFSET	0x400000
+#define CONFIG_SYS_LOAD_ADDR		0x80600000
+#define CONFIG_SYS_MEMTEST_START	0x80100000
+#define CONFIG_SYS_MEMTEST_END		0x80A00000
+#define CONFIG_SYS_TEXT_BASE		0x80100000
+#define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE
+
+#define CONFIG_SYS_MALLOC_LEN		(4 * 1024 * 1024)
+#define CONFIG_SYS_BOOTPARAMS_LEN	(128 * 1024)
+
+#define CONFIG_SYS_CBSIZE	256 /* Console I/O Buffer Size */
+#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
+
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_SYS_MAXARGS	16
+#define CONFIG_SYS_PROMPT	"NanoNote# "
+
 #define CONFIG_SKIP_LOWLEVEL_INIT
 #define CONFIG_BOARD_EARLY_INIT_F
 #define CONFIG_SYS_NO_FLASH
 #define CONFIG_SYS_FLASH_BASE	0 /* init flash_base as 0 */
-#define CONFIG_ENV_OVERWRITE
-
-#define CONFIG_BOOTP_MASK	(CONFIG_BOOTP_DEFAUL)
-#define CONFIG_BOOTDELAY	0
-#define CONFIG_BOOTARGS		"mem=32M console=tty0 console=ttyS0,57600n8 ubi.mtd=2 rootfstype=ubifs root=ubi0:rootfs rw rootwait"
-#define CONFIG_BOOTCOMMAND	"nand read 0x80600000 0x400000 0x200000;bootm"
 
 /*
- * Command line configuration.
+ * Command line configuration
  */
 #define CONFIG_CMD_BOOTD	/* bootd			*/
 #define CONFIG_CMD_CONSOLE	/* coninfo			*/
 #define CONFIG_CMD_ECHO		/* echo arguments		*/
-
 #define CONFIG_CMD_LOADB	/* loadb			*/
 #define CONFIG_CMD_LOADS	/* loads			*/
 #define CONFIG_CMD_MEMORY	/* md mm nm mw cp cmp crc base loop mtest */
@@ -58,45 +76,16 @@
 #define CONFIG_LOADS_ECHO	1	/* echo on for serial download */
 
 /*
- * Miscellaneous configurable options
- */
-#define CONFIG_SYS_MAXARGS 16
-#define CONFIG_SYS_LONGHELP
-#define CONFIG_SYS_PROMPT "NanoNote# "
-#define CONFIG_SYS_CBSIZE 256 /* Console I/O Buffer Size */
-#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
-
-#define CONFIG_SYS_MALLOC_LEN		(4 * 1024 * 1024)
-#define CONFIG_SYS_BOOTPARAMS_LEN	(128 * 1024)
-
-#define CONFIG_SYS_SDRAM_BASE		0x80000000	/* Cached addr */
-#define CONFIG_SYS_INIT_SP_OFFSET	0x400000
-#define CONFIG_SYS_LOAD_ADDR		0x80600000
-#define CONFIG_SYS_MEMTEST_START	0x80100000
-#define CONFIG_SYS_MEMTEST_END		0x80800000
-
-/*
- * Environment
+ * NAND driver configuration
  */
-#define CONFIG_ENV_IS_IN_NAND		/* use NAND for environment vars */
-
-#define CONFIG_SYS_NAND_5_ADDR_CYCLE
-/*
- * if board nand flash is 1GB, set to 1
- * if board nand flash is 2GB, set to 2
- * for change the PAGE_SIZE and BLOCK_SIZE
- * will delete when there is no 1GB flash
- */
-#define NANONOTE_NAND_SIZE	2
-
-#define CONFIG_SYS_NAND_PAGE_SIZE	(2048 * NANONOTE_NAND_SIZE)
-#define CONFIG_SYS_NAND_BLOCK_SIZE	(256 * NANONOTE_NAND_SIZE << 10)
-/* nand bad block was marked at this page in a block, start from 0 */
+#define CONFIG_NAND_JZ4740
+#define CONFIG_SYS_NAND_PAGE_SIZE	4096
+#define CONFIG_SYS_NAND_BLOCK_SIZE	(512 << 10)
+/* NAND bad block was marked at this page in a block, start from 0 */
 #define CONFIG_SYS_NAND_BADBLOCK_PAGE	127
 #define CONFIG_SYS_NAND_PAGE_COUNT	128
 #define CONFIG_SYS_NAND_BAD_BLOCK_POS	0
-/* ECC offset position in oob area, default value is 6 if it isn't defined */
-#define CONFIG_SYS_NAND_ECC_POS		(6 * NANONOTE_NAND_SIZE)
+#define CONFIG_SYS_NAND_ECC_POS		12
 #define CONFIG_SYS_NAND_ECCSIZE		512
 #define CONFIG_SYS_NAND_ECCBYTES	9
 #define CONFIG_SYS_NAND_ECCPOS		\
@@ -115,10 +104,9 @@
 #define CONFIG_SYS_ONENAND_BASE		CONFIG_SYS_NAND_BASE
 #define CONFIG_SYS_MAX_NAND_DEVICE	1
 #define CONFIG_SYS_NAND_SELECT_DEVICE	1 /* nand driver supports mutipl.*/
-#define CONFIG_NAND_SPL_TEXT_BASE	0x80000000
 
 /*
- * IPL (Initial Program Loader, integrated inside CPU)
+ * IPL (Initial Program Loader, integrated inside Ingenic Xburst JZ4740 CPU)
  * Will load first 8k from NAND (SPL) into cache and execute it from there.
  *
  * SPL (Secondary Program Loader)
@@ -130,77 +118,88 @@
  * NUB (NAND U-Boot)
  * This NAND U-Boot (NUB) is a special U-Boot version which can be started
  * from RAM. Therefore it mustn't (re-)configure the SDRAM controller.
- *
  */
+
+/*
+ * NAND SPL configuration
+ */
+#define CONFIG_SPL
+#define CONFIG_SPL_LIBGENERIC_SUPPORT
+#define CONFIG_SPL_LIBCOMMON_SUPPORT
+#define CONFIG_SPL_NAND_LOAD
+#define CONFIG_SPL_NAND_SIMPLE
+#define CONFIG_SPL_NAND_SUPPORT
+#define CONFIG_SPL_TEXT_BASE	0x80000000
+#define CONFIG_SPL_START_S_PATH	"arch/mips/cpu/xburst/spl"
+
+#define CONFIG_SYS_NAND_5_ADDR_CYCLE
+#define CONFIG_SYS_NAND_HW_ECC_OOBFIRST
+#define JZ4740_NANDBOOT_CFG		JZ4740_NANDBOOT_B8R3
+
 #define CONFIG_SYS_NAND_U_BOOT_DST	0x80100000 /* Load NUB to this addr */
 #define CONFIG_SYS_NAND_U_BOOT_START	CONFIG_SYS_NAND_U_BOOT_DST
-/* Start NUB from this addr*/
+					/* Start NUB from this addr */
+#define CONFIG_SYS_NAND_U_BOOT_OFFS (32  << 10) /* Offset of NUB */
+#define CONFIG_SYS_NAND_U_BOOT_SIZE (256 << 10) /* Size of NUB */
 
 /*
- * Define the partitioning of the NAND chip (only RAM U-Boot is needed here)
+ * Environment configuration
  */
-#define CONFIG_SYS_NAND_U_BOOT_OFFS (256 << 10) /* Offset to RAM U-Boot image */
-#define CONFIG_SYS_NAND_U_BOOT_SIZE (512 << 10) /* Size of RAM U-Boot image */
-
+#define CONFIG_ENV_OVERWRITE
+#define CONFIG_ENV_IS_IN_NAND
 #define CONFIG_ENV_SIZE		(4 << 10)
 #define CONFIG_ENV_OFFSET	\
 	(CONFIG_SYS_NAND_BLOCK_SIZE + CONFIG_SYS_NAND_U_BOOT_SIZE)
 #define CONFIG_ENV_OFFSET_REDUND \
 	(CONFIG_ENV_OFFSET  + CONFIG_SYS_NAND_BLOCK_SIZE)
 
-#define CONFIG_SYS_TEXT_BASE	0x80100000
-#define CONFIG_SYS_MONITOR_BASE	CONFIG_SYS_TEXT_BASE
-
 /*
- * SDRAM Info.
+ * CPU cache configuration
  */
-#define CONFIG_NR_DRAM_BANKS	1
+#define CONFIG_SYS_DCACHE_SIZE		16384
+#define CONFIG_SYS_ICACHE_SIZE		16384
+#define CONFIG_SYS_CACHELINE_SIZE	32
 
 /*
- * Cache Configuration
+ * SDRAM configuration
  */
-#define CONFIG_SYS_DCACHE_SIZE	16384
-#define CONFIG_SYS_ICACHE_SIZE	16384
-#define CONFIG_SYS_CACHELINE_SIZE	32
+#define CONFIG_NR_DRAM_BANKS	1
+
+#define SDRAM_BW16		1	/* Data bus width: 0-32bit, 1-16bit */
+#define SDRAM_BANK4		1	/* Banks each chip: 0-2bank, 1-4bank */
+#define SDRAM_ROW		13	/* Row address: 11 to 13 */
+#define SDRAM_COL		9	/* Column address: 8 to 12 */
+#define SDRAM_CASL		2	/* CAS latency: 2 or 3 */
+#define SDRAM_TRAS		45	/* RAS# Active Time */
+#define SDRAM_RCD		20	/* RAS# to CAS# Delay */
+#define SDRAM_TPC		20	/* RAS# Precharge Time */
+#define SDRAM_TRWL		7	/* Write Latency Time */
+#define SDRAM_TREF		15625	/* Refresh period: 8192 cycles/64ms */
 
 /*
- * GPIO definition
+ * GPIO configuration
  */
-#define GPIO_LCD_CS	(2 * 32 + 21)
-#define GPIO_AMP_EN	(3 * 32 + 4)
+#define GPIO_LCD_CS		(2 * 32 + 21)
+#define GPIO_AMP_EN		(3 * 32 + 4)
 
-#define GPIO_SDPW_EN	(3 * 32 + 2)
-#define GPIO_SD_DETECT	(3 * 32 + 0)
+#define GPIO_SDPW_EN		(3 * 32 + 2)
+#define GPIO_SD_DETECT		(3 * 32 + 0)
 
-#define GPIO_BUZZ_PWM	(3 * 32 + 27)
-#define GPIO_USB_DETECT	(3 * 32 + 28)
+#define GPIO_BUZZ_PWM		(3 * 32 + 27)
+#define GPIO_USB_DETECT		(3 * 32 + 28)
 
-#define GPIO_AUDIO_POP	(1 * 32 + 29)
-#define GPIO_COB_TEST	(1 * 32 + 30)
+#define GPIO_AUDIO_POP		(1 * 32 + 29)
+#define GPIO_COB_TEST		(1 * 32 + 30)
 
 #define GPIO_KEYOUT_BASE	(2 * 32 + 10)
-#define GPIO_KEYIN_BASE	(3 * 32 + 18)
-#define GPIO_KEYIN_8	(3 * 32 + 26)
+#define GPIO_KEYIN_BASE		(3 * 32 + 18)
+#define GPIO_KEYIN_8		(3 * 32 + 26)
 
-#define GPIO_SD_CD_N	GPIO_SD_DETECT		/* SD Card insert detect */
+#define GPIO_SD_CD_N		GPIO_SD_DETECT	/* SD Card insert detect */
 #define GPIO_SD_VCC_EN_N	GPIO_SDPW_EN	/* SD Card Power Enable */
 
 #define SPEN	GPIO_LCD_CS	/* LCDCS :Serial command enable      */
 #define SPDA	(2 * 32 + 22)	/* LCDSCL:Serial command clock input */
 #define SPCK	(2 * 32 + 23)	/* LCDSDA:Serial command data input  */
 
-/* SDRAM paramters */
-#define SDRAM_BW16		1	/* Data bus width: 0-32bit, 1-16bit */
-#define SDRAM_BANK4		1	/* Banks each chip: 0-2bank, 1-4bank */
-#define SDRAM_ROW		13	/* Row address: 11 to 13 */
-#define SDRAM_COL		9	/* Column address: 8 to 12 */
-#define SDRAM_CASL		2	/* CAS latency: 2 or 3 */
-
-/* SDRAM Timings, unit: ns */
-#define SDRAM_TRAS		45	/* RAS# Active Time */
-#define SDRAM_RCD		20	/* RAS# to CAS# Delay */
-#define SDRAM_TPC		20	/* RAS# Precharge Time */
-#define SDRAM_TRWL		7	/* Write Latency Time */
-#define SDRAM_TREF		15625	/* Refresh period: 8192 cycles/64ms */
-
 #endif
-- 
1.7.9.5