diff mbox

[U-Boot,2/2] powerpc/p1022ds: Add support for NAND and NAND boot

Message ID 1337357058-30322-2-git-send-email-timur@freescale.com
State Rejected
Delegated to: Andy Fleming
Headers show

Commit Message

Timur Tabi May 18, 2012, 4:04 p.m. UTC
From: Matthew McClintock <msm@freescale.com>

Add defines needed to access NAND, remove second flash bank that is
actually connected to NAND.

Add nand booting support for P1022DS with hardcoded DDR config

Signed-off-by: Matthew McClintock <msm@freescale.com>
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Jiang Yutang <b14898@freescale.com>
---
 board/freescale/p1022ds/law.c                |    3 +
 board/freescale/p1022ds/tlb.c                |   25 +++--
 boards.cfg                                   |    2 +
 include/configs/P1022DS.h                    |  121 +++++++++++++++++++++--
 nand_spl/board/freescale/p1022ds/Makefile    |  137 ++++++++++++++++++++++++++
 nand_spl/board/freescale/p1022ds/nand_boot.c |  132 +++++++++++++++++++++++++
 6 files changed, 401 insertions(+), 19 deletions(-)
 create mode 100644 nand_spl/board/freescale/p1022ds/Makefile
 create mode 100644 nand_spl/board/freescale/p1022ds/nand_boot.c

Comments

Scott Wood May 18, 2012, 4:45 p.m. UTC | #1
On 05/18/2012 11:04 AM, Timur Tabi wrote:
> +/* These are used when DDR doesn't use SPD.  */
> +#define CONFIG_SYS_SDRAM_SIZE		2048
> +#define CONFIG_SYS_SDRAM_SIZE_LAW	LAW_SIZE_2G
> +#define CONFIG_SYS_DDR_CS0_BNDS		0x0000003F
> +#define CONFIG_SYS_DDR_CS0_CONFIG	0x80014202
> +#define CONFIG_SYS_DDR_CS1_BNDS		0x0040007F
> +#define CONFIG_SYS_DDR_CS1_CONFIG	0x80014202
> +#define CONFIG_SYS_DDR_TIMING_3		0x00010000
> +#define CONFIG_SYS_DDR_TIMING_0		0x40110104
> +#define CONFIG_SYS_DDR_TIMING_1		0x5c5bd746
> +#define CONFIG_SYS_DDR_TIMING_2		0x0fa8d4ca

NACK, please use SPD.

Also please use the new SPL infrastructure.

-Scott
Timur Tabi May 18, 2012, 5:08 p.m. UTC | #2
Scott Wood wrote:
> NACK, please use SPD.
> 
> Also please use the new SPL infrastructure.

I'm just taking the patches as they are on the SDK and posting them.  I
have no idea how the new SPL infrastructure works.

If you're going to NACK this patch set, then I'm just going to drop them
and work on something else.
McClintock Matthew-B29882 May 18, 2012, 6:17 p.m. UTC | #3
On Fri, May 18, 2012 at 12:08 PM, Timur Tabi <timur@freescale.com> wrote:
> Scott Wood wrote:
>> NACK, please use SPD.
>>
>> Also please use the new SPL infrastructure.
>
> I'm just taking the patches as they are on the SDK and posting them.  I
> have no idea how the new SPL infrastructure works.
>
> If you're going to NACK this patch set, then I'm just going to drop them
> and work on something else.

Upstream would need these... it's not trivial task.

-M
diff mbox

Patch

diff --git a/board/freescale/p1022ds/law.c b/board/freescale/p1022ds/law.c
index b23b8f9..476069c 100644
--- a/board/freescale/p1022ds/law.c
+++ b/board/freescale/p1022ds/law.c
@@ -16,6 +16,9 @@ 
 struct law_entry law_table[] = {
 	SET_LAW(CONFIG_SYS_FLASH_BASE_PHYS, LAW_SIZE_256M, LAW_TRGT_IF_LBC),
 	SET_LAW(PIXIS_BASE_PHYS, LAW_SIZE_4K, LAW_TRGT_IF_LBC),
+#ifdef CONFIG_SYS_NAND_BASE_PHYS
+	SET_LAW(CONFIG_SYS_NAND_BASE_PHYS, LAW_SIZE_1M, LAW_TRGT_IF_LBC),
+#endif
 };
 
 int num_law_entries = ARRAY_SIZE(law_table);
diff --git a/board/freescale/p1022ds/tlb.c b/board/freescale/p1022ds/tlb.c
index 71e71f7..1301c78 100644
--- a/board/freescale/p1022ds/tlb.c
+++ b/board/freescale/p1022ds/tlb.c
@@ -41,6 +41,18 @@  struct fsl_e_tlb_entry tlb_table[] = {
 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		      0, 1, BOOKE_PAGESZ_1M, 1),
 
+#ifdef CONFIG_SYS_NAND_BASE
+	/* *I*G - NAND */
+	SET_TLB_ENTRY(1, CONFIG_SYS_NAND_BASE, CONFIG_SYS_NAND_BASE_PHYS,
+			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+			0, 10, BOOKE_PAGESZ_1M, 1),
+#endif
+
+	SET_TLB_ENTRY(1, PIXIS_BASE, PIXIS_BASE_PHYS,
+		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+		      0, 7, BOOKE_PAGESZ_4K, 1),
+
+#ifndef CONFIG_NAND_SPL
 	/* W**G* - Flash/promjet, localbus */
 	/* This will be changed to *I*G* after relocation to RAM. */
 	SET_TLB_ENTRY(1, CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE_PHYS,
@@ -67,24 +79,19 @@  struct fsl_e_tlb_entry tlb_table[] = {
 	SET_TLB_ENTRY(1, CONFIG_SYS_PCIE3_IO_VIRT, CONFIG_SYS_PCIE3_IO_PHYS,
 		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
 		      0, 6, BOOKE_PAGESZ_256K, 1),
-
-	SET_TLB_ENTRY(1, PIXIS_BASE, PIXIS_BASE_PHYS,
-		      MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
-		      0, 7, BOOKE_PAGESZ_4K, 1),
+#endif
 
 #ifdef CONFIG_SYS_RAMBOOT
 	/* *I*G - eSDHC/eSPI/NAND boot */
 	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE, CONFIG_SYS_DDR_SDRAM_BASE,
 			MAS3_SX|MAS3_SW|MAS3_SR, 0,
 			0, 8, BOOKE_PAGESZ_1G, 1),
-
-	/* map the second 1G */
+	/* *I*G - eSDHC/eSPI/NAND boot - second 1GB of memory */
 	SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE + 0x40000000,
-			CONFIG_SYS_DDR_SDRAM_BASE + 0x40000000,
-			MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
+			 CONFIG_SYS_DDR_SDRAM_BASE + 0x40000000,
+			MAS3_SX|MAS3_SW|MAS3_SR, 0,
 			0, 9, BOOKE_PAGESZ_1G, 1),
 #endif
-#
 };
 
 int num_tlb_entries = ARRAY_SIZE(tlb_table);
diff --git a/boards.cfg b/boards.cfg
index 42e5ae0..418e5fe 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -699,6 +699,8 @@  P1021RDB-PC_NAND             powerpc     mpc85xx     p1_p2_rdb_pc        freesca
 P1021RDB-PC_SDCARD           powerpc     mpc85xx     p1_p2_rdb_pc        freescale      -           p1_p2_rdb_pc:P1021RDB,SDCARD
 P1021RDB-PC_SPIFLASH         powerpc     mpc85xx     p1_p2_rdb_pc        freescale      -           p1_p2_rdb_pc:P1021RDB,SPIFLASH
 P1022DS                      powerpc     mpc85xx     p1022ds             freescale
+P1022DS_NAND                 powerpc     mpc85xx     p1022ds             freescale	-	    P1022DS:NAND
+P1022DS_36BIT_NAND           powerpc     mpc85xx     p1022ds             freescale	-	    P1022DS:36BIT,NAND
 P1022DS_SPIFLASH             powerpc     mpc85xx     p1022ds             freescale	-	    P1022DS:SPIFLASH
 P1022DS_36BIT_SPIFLASH       powerpc     mpc85xx     p1022ds             freescale	-	    P1022DS:36BIT,SPIFLASH
 P1022DS_SDCARD               powerpc     mpc85xx     p1022ds             freescale	-	    P1022DS:SDCARD
diff --git a/include/configs/P1022DS.h b/include/configs/P1022DS.h
index ea1d19f..de48e55 100644
--- a/include/configs/P1022DS.h
+++ b/include/configs/P1022DS.h
@@ -34,6 +34,20 @@ 
 #define CONFIG_RESET_VECTOR_ADDRESS	0x1107fffc
 #endif
 
+#define CONFIG_NAND_FSL_ELBC
+#if defined(CONFIG_NAND) && defined(CONFIG_NAND_FSL_ELBC)
+#define CONFIG_NAND_U_BOOT
+#define CONFIG_RAMBOOT_NAND
+#define CONFIG_SYS_EXTRA_ENV_RELOC
+#define CONFIG_SYS_RAMBOOT
+#define CONFIG_SYS_TEXT_BASE_SPL	0xff800000
+#ifdef CONFIG_NAND_SPL
+#define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE_SPL
+#else
+#define CONFIG_SYS_TEXT_BASE		0x11001000
+#endif /* CONFIG_NAND_SPL */
+#endif
+
 /* High Level Configuration Options */
 #define CONFIG_BOOKE			/* BOOKE */
 #define CONFIG_E500			/* BOOKE e500 family */
@@ -84,6 +98,12 @@ 
 #define CONFIG_SYS_CCSRBAR		0xffe00000
 #define CONFIG_SYS_CCSRBAR_PHYS_LOW	CONFIG_SYS_CCSRBAR
 
+/* IN case of NAND bootloader relocate CCSRBAR in RAMboot code not in the 4k
+       SPL code*/
+#if defined(CONFIG_NAND_U_BOOT) && defined(CONFIG_NAND_SPL)
+#define CONFIG_SYS_CCSR_DO_NOT_RELOCATE
+#endif
+
 /* DDR Setup */
 #define CONFIG_DDR_SPD
 #define CONFIG_VERY_BIG_RAM
@@ -105,6 +125,30 @@ 
 #define CONFIG_SYS_SPD_BUS_NUM		1
 #define SPD_EEPROM_ADDRESS		0x51	/* CTLR 0 DIMM 0 */
 
+/* These are used when DDR doesn't use SPD.  */
+#define CONFIG_SYS_SDRAM_SIZE		2048
+#define CONFIG_SYS_SDRAM_SIZE_LAW	LAW_SIZE_2G
+#define CONFIG_SYS_DDR_CS0_BNDS		0x0000003F
+#define CONFIG_SYS_DDR_CS0_CONFIG	0x80014202
+#define CONFIG_SYS_DDR_CS1_BNDS		0x0040007F
+#define CONFIG_SYS_DDR_CS1_CONFIG	0x80014202
+#define CONFIG_SYS_DDR_TIMING_3		0x00010000
+#define CONFIG_SYS_DDR_TIMING_0		0x40110104
+#define CONFIG_SYS_DDR_TIMING_1		0x5c5bd746
+#define CONFIG_SYS_DDR_TIMING_2		0x0fa8d4ca
+#define CONFIG_SYS_DDR_MODE_1		0x00441221
+#define CONFIG_SYS_DDR_MODE_2		0x00000000
+#define CONFIG_SYS_DDR_INTERVAL		0x0a280100
+#define CONFIG_SYS_DDR_DATA_INIT	0xdeadbeef
+#define CONFIG_SYS_DDR_CLK_CTRL		0x02800000
+#define CONFIG_SYS_DDR_CONTROL		0xc7000008
+#define CONFIG_SYS_DDR_CONTROL_2	0x24401041
+#define	CONFIG_SYS_DDR_TIMING_4		0x00220001
+#define	CONFIG_SYS_DDR_TIMING_5		0x02401400
+#define	CONFIG_SYS_DDR_ZQ_CONTROL	0x89080600
+#define CONFIG_SYS_DDR_WRLVL_CONTROL	0x8675f608
+
+
 /*
  * Memory map
  *
@@ -118,6 +162,7 @@ 
  * Localbus non-cacheable
  * 0xe000_0000	0xe80f_ffff	Promjet/free		128M non-cacheable
  * 0xe800_0000	0xefff_ffff	FLASH			128M non-cacheable
+ * 0xff80_0000	0xff8f_ffff	NAND			1M non-cacheable
  * 0xffdf_0000	0xffdf_7fff	PIXIS			32K non-cacheable TLB0
  * 0xffd0_0000	0xffd0_3fff	L1 for stack		16K Cacheable TLB0
  * 0xffe0_0000	0xffef_ffff	CCSR			1M non-cacheable
@@ -126,38 +171,89 @@ 
 /*
  * Local Bus Definitions
  */
-#define CONFIG_SYS_FLASH_BASE		0xe0000000 /* start of FLASH 128M */
+#define CONFIG_SYS_FLASH_BASE		0xe8000000 /* start of FLASH 128M */
 #ifdef CONFIG_PHYS_64BIT
-#define CONFIG_SYS_FLASH_BASE_PHYS	0xfe0000000ull
+#define CONFIG_SYS_FLASH_BASE_PHYS	0xfe8000000ull
 #else
 #define CONFIG_SYS_FLASH_BASE_PHYS	CONFIG_SYS_FLASH_BASE
 #endif
 
 #define CONFIG_FLASH_BR_PRELIM  \
-	(BR_PHYS_ADDR((CONFIG_SYS_FLASH_BASE_PHYS + 0x8000000)) | BR_PS_16 | BR_V)
+	(BR_PHYS_ADDR(CONFIG_SYS_FLASH_BASE_PHYS) | BR_PS_16 | BR_V)
 #define CONFIG_FLASH_OR_PRELIM	(OR_AM_128MB | 0xff7)
 
+#ifdef CONFIG_NAND_U_BOOT
+#define CONFIG_SYS_BR1_PRELIM	CONFIG_FLASH_BR_PRELIM	/* NOR Base Address */
+#define CONFIG_SYS_OR1_PRELIM	CONFIG_FLASH_OR_PRELIM	/* NOR Options */
+#else
 #define CONFIG_SYS_BR0_PRELIM	CONFIG_FLASH_BR_PRELIM  /* NOR Base Address */
 #define CONFIG_SYS_OR0_PRELIM	CONFIG_FLASH_OR_PRELIM  /* NOR Options */
+#endif
 
-#define CONFIG_SYS_BR1_PRELIM	\
-	(BR_PHYS_ADDR(CONFIG_SYS_FLASH_BASE_PHYS) | BR_PS_16 | BR_V)
-#define CONFIG_SYS_OR1_PRELIM	CONFIG_FLASH_OR_PRELIM
-
-#define CONFIG_SYS_FLASH_BANKS_LIST	\
-	{CONFIG_SYS_FLASH_BASE_PHYS + 0x8000000, CONFIG_SYS_FLASH_BASE_PHYS}
+#define CONFIG_SYS_FLASH_BANKS_LIST	{CONFIG_SYS_FLASH_BASE_PHYS}
 #define CONFIG_SYS_FLASH_QUIET_TEST
 #define CONFIG_FLASH_SHOW_PROGRESS	45 /* count down from 45/5: 9..1 */
 
-#define CONFIG_SYS_MAX_FLASH_BANKS	2
+#define CONFIG_SYS_MAX_FLASH_BANKS	1
 #define CONFIG_SYS_MAX_FLASH_SECT	1024
 
+#ifndef CONFIG_SYS_MONITOR_BASE
 #define CONFIG_SYS_MONITOR_BASE		CONFIG_SYS_TEXT_BASE	/* start of monitor */
+#endif
 
 #define CONFIG_FLASH_CFI_DRIVER
 #define CONFIG_SYS_FLASH_CFI
 #define CONFIG_SYS_FLASH_EMPTY_INFO
 
+/* Nand Flash */
+#ifdef CONFIG_NAND_FSL_ELBC
+#define CONFIG_SYS_NAND_BASE		0xff800000
+#ifdef CONFIG_PHYS_64BIT
+#define CONFIG_SYS_NAND_BASE_PHYS	0xfff800000ull
+#else
+#define CONFIG_SYS_NAND_BASE_PHYS	CONFIG_SYS_NAND_BASE
+#endif
+
+#define CONFIG_SYS_NAND_BASE_LIST     { CONFIG_SYS_NAND_BASE, }
+#define CONFIG_SYS_MAX_NAND_DEVICE	1
+#define CONFIG_MTD_NAND_VERIFY_WRITE
+#define CONFIG_CMD_NAND			1
+#define CONFIG_SYS_NAND_BLOCK_SIZE    (256 * 1024)
+#define CONFIG_ELBC_NAND_SPL_STATIC_PGSIZE
+
+/* NAND boot: 4K NAND loader config */
+#define CONFIG_SYS_NAND_SPL_SIZE	0x1000
+#define CONFIG_SYS_NAND_U_BOOT_SIZE	((512 << 10) + CONFIG_SYS_NAND_SPL_SIZE)
+#define CONFIG_SYS_NAND_U_BOOT_DST	(0x11000000 - CONFIG_SYS_NAND_SPL_SIZE)
+#define CONFIG_SYS_NAND_U_BOOT_START	0x11000000
+#define CONFIG_SYS_NAND_U_BOOT_OFFS	(0)
+#define CONFIG_SYS_NAND_U_BOOT_RELOC	0x00010000
+#define CONFIG_SYS_NAND_U_BOOT_RELOC_SP	(CONFIG_SYS_NAND_U_BOOT_RELOC + 0x10000)
+
+/* NAND flash config */
+#define CONFIG_SYS_NAND_BR_PRELIM  (BR_PHYS_ADDR(CONFIG_SYS_NAND_BASE_PHYS) \
+			       | (2<<BR_DECC_SHIFT)    /* Use HW ECC */ \
+			       | BR_PS_8	       /* Port Size = 8 bit */ \
+			       | BR_MS_FCM	       /* MSEL = FCM */ \
+			       | BR_V)		       /* valid */
+#define CONFIG_SYS_NAND_OR_PRELIM  ( OR_AM_256KB	       /* length 256K */ \
+			       | OR_FCM_PGS	       /* Large Page*/ \
+			       | OR_FCM_CSCT \
+			       | OR_FCM_CST \
+			       | OR_FCM_CHT \
+			       | OR_FCM_SCY_1 \
+			       | OR_FCM_TRLX \
+			       | OR_FCM_EHTR)
+#ifdef CONFIG_NAND_U_BOOT
+#define CONFIG_SYS_BR0_PRELIM	CONFIG_SYS_NAND_BR_PRELIM /* NAND Base Address */
+#define CONFIG_SYS_OR0_PRELIM	CONFIG_SYS_NAND_OR_PRELIM /* NAND Options */
+#else
+#define CONFIG_SYS_BR1_PRELIM	CONFIG_SYS_NAND_BR_PRELIM /* NAND Base Address */
+#define CONFIG_SYS_OR1_PRELIM	CONFIG_SYS_NAND_OR_PRELIM /* NAND Options */
+#endif
+
+#endif /* CONFIG_NAND_FSL_ELBC */
+
 #define CONFIG_BOARD_EARLY_INIT_F
 #define CONFIG_BOARD_EARLY_INIT_R
 #define CONFIG_MISC_INIT_R
@@ -177,6 +273,8 @@ 
 #define PIXIS_LBMAP_SWITCH	7
 #define PIXIS_LBMAP_MASK	0xF0
 #define PIXIS_LBMAP_ALTBANK	0x20
+#define PIXIS_SPD		0x07
+#define PIXIS_SPD_SYSCLK_MASK	0x07
 #define PIXIS_ELBC_SPI_MASK	0xc0
 #define PIXIS_SPI		0x80
 
@@ -199,6 +297,9 @@ 
 #define CONFIG_SYS_NS16550_SERIAL
 #define CONFIG_SYS_NS16550_REG_SIZE	1
 #define CONFIG_SYS_NS16550_CLK		get_bus_freq(0)
+#ifdef CONFIG_NAND_SPL
+#define CONFIG_NS16550_MIN_FUNCTIONS
+#endif
 
 #define CONFIG_SYS_BAUDRATE_TABLE	\
 	{300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200}
diff --git a/nand_spl/board/freescale/p1022ds/Makefile b/nand_spl/board/freescale/p1022ds/Makefile
new file mode 100644
index 0000000..475cc49
--- /dev/null
+++ b/nand_spl/board/freescale/p1022ds/Makefile
@@ -0,0 +1,137 @@ 
+#
+# (C) Copyright 2007
+# Stefan Roese, DENX Software Engineering, sr@denx.de.
+#
+# Copyright 2011 Freescale Semiconductor, Inc.
+#
+# 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
+#
+
+NAND_SPL := y
+CONFIG_SYS_TEXT_BASE_SPL := 0xfff00000
+PAD_TO := 0xff801000
+
+include $(TOPDIR)/config.mk
+
+nandobj	:= $(OBJTREE)/nand_spl/
+
+LDSCRIPT= $(TOPDIR)/$(CPUDIR)/u-boot-nand_spl.lds
+LDFLAGS := -T $(nandobj)u-boot-nand_spl.lds -Ttext $(CONFIG_SYS_TEXT_BASE_SPL) \
+		$(LDFLAGS) $(LDFLAGS_FINAL)
+AFLAGS	+= -DCONFIG_NAND_SPL
+CFLAGS	+= -DCONFIG_NAND_SPL
+
+SOBJS	= start.o resetvec.o
+COBJS	= cache.o cpu_init_early.o cpu_init_nand.o fsl_law.o law.o \
+	  nand_boot.o nand_boot_fsl_elbc.o ns16550.o tlb.o tlb_table.o
+
+SRCS	:= $(addprefix $(obj),$(SOBJS:.o=.S) $(COBJS:.o=.c))
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+__OBJS	:= $(SOBJS) $(COBJS)
+LNDIR	:= $(nandobj)board/$(BOARDDIR)
+
+ALL	= $(nandobj)u-boot-spl $(nandobj)u-boot-spl.bin $(nandobj)u-boot-spl-16k.bin
+
+all:	$(obj).depend $(ALL)
+
+$(nandobj)u-boot-spl-16k.bin: $(nandobj)u-boot-spl
+	$(OBJCOPY) ${OBJCFLAGS} --pad-to=$(PAD_TO) -O binary $< $@
+
+$(nandobj)u-boot-spl.bin:	$(nandobj)u-boot-spl
+	$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@
+
+$(nandobj)u-boot-spl:	$(OBJS) $(nandobj)u-boot-nand_spl.lds
+	cd $(LNDIR) && $(LD) $(LDFLAGS) $(__OBJS) $(PLATFORM_LIBS) \
+		-Map $(nandobj)u-boot-spl.map \
+		-o $(nandobj)u-boot-spl
+
+$(nandobj)u-boot-nand_spl.lds: $(LDSCRIPT)
+	$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -ansi -D__ASSEMBLY__ -P - <$^ >$@
+
+# create symbolic links for common files
+
+$(obj)cache.c:
+	@rm -f $(obj)cache.c
+	ln -sf $(SRCTREE)/arch/powerpc/lib/cache.c $(obj)cache.c
+
+$(obj)cpu_init_early.c:
+	@rm -f $(obj)cpu_init_early.c
+	ln -sf $(SRCTREE)/$(CPUDIR)/cpu_init_early.c $(obj)cpu_init_early.c
+
+$(obj)cpu_init_nand.c:
+	@rm -f $(obj)cpu_init_nand.c
+	ln -sf $(SRCTREE)/$(CPUDIR)/cpu_init_nand.c $(obj)cpu_init_nand.c
+
+$(obj)fsl_law.c:
+	@rm -f $(obj)fsl_law.c
+	ln -sf $(SRCTREE)/drivers/misc/fsl_law.c $(obj)fsl_law.c
+
+$(obj)law.c:
+	@rm -f $(obj)law.c
+	ln -sf $(SRCTREE)/board/$(BOARDDIR)/law.c $(obj)law.c
+
+$(obj)nand_boot_fsl_elbc.c:
+	@rm -f $(obj)nand_boot_fsl_elbc.c
+	ln -sf $(SRCTREE)/nand_spl/nand_boot_fsl_elbc.c \
+	       $(obj)nand_boot_fsl_elbc.c
+
+$(obj)ns16550.c:
+	@rm -f $(obj)ns16550.c
+	ln -sf $(SRCTREE)/drivers/serial/ns16550.c $(obj)ns16550.c
+
+$(obj)resetvec.S:
+	@rm -f $(obj)resetvec.S
+	ln -s $(SRCTREE)/$(CPUDIR)/resetvec.S $(obj)resetvec.S
+
+$(obj)fixed_ivor.S:
+	@rm -f $(obj)fixed_ivor.S
+	ln -sf $(SRCTREE)/$(CPUDIR)/fixed_ivor.S $(obj)fixed_ivor.S
+
+$(obj)start.S: $(obj)fixed_ivor.S
+	@rm -f $(obj)start.S
+	ln -sf $(SRCTREE)/$(CPUDIR)/start.S $(obj)start.S
+
+$(obj)tlb.c:
+	@rm -f $(obj)tlb.c
+	ln -sf $(SRCTREE)/$(CPUDIR)/tlb.c $(obj)tlb.c
+
+$(obj)tlb_table.c:
+	@rm -f $(obj)tlb_table.c
+	ln -sf $(SRCTREE)/board/$(BOARDDIR)/tlb.c $(obj)tlb_table.c
+
+ifneq ($(OBJTREE), $(SRCTREE))
+$(obj)nand_boot.c:
+	@rm -f $(obj)nand_boot.c
+	ln -s $(SRCTREE)/nand_spl/board/$(BOARDDIR)/nand_boot.c $(obj)nand_boot.c
+endif
+
+#########################################################################
+
+$(obj)%.o:	$(obj)%.S
+	$(CC) $(AFLAGS) -c -o $@ $<
+
+$(obj)%.o:	$(obj)%.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/nand_spl/board/freescale/p1022ds/nand_boot.c b/nand_spl/board/freescale/p1022ds/nand_boot.c
new file mode 100644
index 0000000..b2aaf2b
--- /dev/null
+++ b/nand_spl/board/freescale/p1022ds/nand_boot.c
@@ -0,0 +1,132 @@ 
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ *
+ * 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 <ns16550.h>
+#include <asm/io.h>
+#include <nand.h>
+#include <asm/fsl_law.h>
+#include <asm/fsl_ddr_sdram.h>
+
+#define udelay(x) {int i, j; for (i = 0; i < x; i++) for (j = 0; j < 10000; j++); }
+
+/*
+ * Fixed sdram init -- doesn't use serial presence detect.
+ */
+void sdram_init(void)
+{
+	volatile ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC85xx_DDR_ADDR;
+
+	out_be32(&ddr->cs0_bnds, CONFIG_SYS_DDR_CS0_BNDS);
+	out_be32(&ddr->cs0_config, CONFIG_SYS_DDR_CS0_CONFIG);
+#if CONFIG_CHIP_SELECTS_PER_CTRL > 1
+	out_be32(&ddr->cs1_bnds, CONFIG_SYS_DDR_CS1_BNDS);
+	out_be32(&ddr->cs1_config, CONFIG_SYS_DDR_CS1_CONFIG);
+#endif
+	out_be32(&ddr->timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
+	out_be32(&ddr->timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
+	out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
+	out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
+
+	out_be32(&ddr->sdram_cfg_2, CONFIG_SYS_DDR_CONTROL_2);
+	out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1);
+	out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2);
+
+	out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL);
+	out_be32(&ddr->sdram_data_init, CONFIG_SYS_DDR_DATA_INIT);
+	out_be32(&ddr->sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CTRL);
+
+	out_be32(&ddr->timing_cfg_4, CONFIG_SYS_DDR_TIMING_4);
+	out_be32(&ddr->timing_cfg_5, CONFIG_SYS_DDR_TIMING_5);
+	out_be32(&ddr->ddr_zq_cntl, CONFIG_SYS_DDR_ZQ_CONTROL);
+	out_be32(&ddr->ddr_wrlvl_cntl, CONFIG_SYS_DDR_WRLVL_CONTROL);
+
+	/* Set, but do not enable the memory */
+	out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN);
+
+	asm volatile("sync;isync");
+	udelay(500);
+
+	/* Let the controller go */
+	out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN);
+
+	set_next_law(0, CONFIG_SYS_SDRAM_SIZE_LAW, LAW_TRGT_IF_DDR_1);
+}
+
+u32 sysclk_tbl[] = {
+	66666000, 7499900, 83332500, 8999900,
+	99999000, 11111000, 12499800, 13333200
+};
+
+void board_init_f(ulong bootflag)
+{
+	int px_spd;
+	u32 plat_ratio, bus_clk, sys_clk;
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+#if defined(CONFIG_SYS_BR2_PRELIM) && defined(CONFIG_SYS_OR2_PRELIM)
+	/* for FPGA */
+	set_lbc_br(2, CONFIG_SYS_BR2_PRELIM);
+	set_lbc_or(2, CONFIG_SYS_OR2_PRELIM);
+#else
+#error CONFIG_SYS_BR2_PRELIM, CONFIG_SYS_OR2_PRELIM must be defined
+#endif
+
+	/* initialize selected port with appropriate baud rate */
+	px_spd = in_8((unsigned char *)(PIXIS_BASE + PIXIS_SPD));
+	sys_clk = sysclk_tbl[px_spd & PIXIS_SPD_SYSCLK_MASK];
+	plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
+	bus_clk = sys_clk * plat_ratio / 2;
+
+	NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
+			bus_clk / 16 / CONFIG_BAUDRATE);
+
+	puts("\nNAND boot... ");
+
+	/* Initialize the DDR3 */
+	sdram_init();
+
+	/* copy code to RAM and jump to it - this should not return */
+	/* NOTE - code has to be copied out of NAND buffer before
+	 * other blocks can be read.
+	 */
+	relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC_SP, 0,
+			CONFIG_SYS_NAND_U_BOOT_RELOC);
+}
+
+void board_init_r(gd_t *gd, ulong dest_addr)
+{
+	nand_boot();
+}
+
+void putc(char c)
+{
+	if (c == '\n')
+		NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
+
+	NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
+}
+
+void puts(const char *str)
+{
+	while (*str)
+		putc(*str++);
+}