Merge with /home/stefan/git/u-boot/acadia-nand-boot

14 files changed, 685 insertions, 70 deletions

diff --git a/MAKEALL b/MAKEALL
index 81f5dfc..67d39a7 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -75,22 +75,23 @@ LIST_8xx="	\
 #########################################################################
 
 LIST_4xx="	\
-	acadia		ADCIOP		alpr		AP1000		\
-	AR405		ASH405		bamboo		bamboo_nand	\
-	bubinga		CANBT		CMS700		CPCI2DP		\
-	CPCI405		CPCI4052	CPCI405AB	CPCI405DT	\
-	CPCI440		CPCIISER4	CRAYL1		csb272		\
-	csb472		DASA_SIM	DP405		DU405		\
-	ebony		ERIC		EXBITGEN	G2000		\
-	HH405		HUB405		JSE		KAREF		\
-	katmai		luan		METROBOX	MIP405		\
-	MIP405T		ML2		ml300		ocotea		\
-	OCRTC		ORSG		p3p440		PCI405		\
-	pcs440ep	PIP405		PLU405		PMC405		\
-	PPChameleonEVB	sbc405		sc3		sequoia		\
-	sequoia_nand	taishan		VOH405		VOM405		\
-	W7OLMC		W7OLMG		walnut		WUH405		\
-	XPEDITE1K	yellowstone	yosemite	yucca		\
+	acadia		acadia_nand	ADCIOP		alpr		\
+	AP1000		AR405		ASH405		bamboo		\
+	bamboo_nand	bubinga		CANBT		CMS700		\
+	CPCI2DP		CPCI405		CPCI4052	CPCI405AB	\
+	CPCI405DT	CPCI440		CPCIISER4	CRAYL1		\
+	csb272		csb472		DASA_SIM	DP405		\
+	DU405		ebony		ERIC		EXBITGEN	\
+	G2000		HH405		HUB405		JSE		\
+	KAREF		katmai		luan		METROBOX	\
+	MIP405		MIP405T		ML2		ml300		\
+	ocotea		OCRTC		ORSG		p3p440		\
+	PCI405		pcs440ep	PIP405		PLU405		\
+	PMC405		PPChameleonEVB	sbc405		sc3		\
+	sequoia		sequoia_nand	taishan		VOH405		\
+	VOM405		W7OLMC		W7OLMG		walnut		\
+	WUH405		XPEDITE1K	yellowstone	yosemite	\
+	yucca								\
 "
 
 #########################################################################
diff --git a/Makefile b/Makefile
index dd017d6..4dc7c45 100644
--- a/Makefile
+++ b/Makefile
@@ -1017,6 +1017,15 @@ xtract_4xx = $(subst _25,,$(subst _33,,$(subst _BA,,$(subst _ME,,$(subst _HI,,$(
 acadia_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx acadia amcc
 
+acadia_nand_config:	unconfig
+	@mkdir -p $(obj)include
+	@mkdir -p $(obj)nand_spl
+	@mkdir -p $(obj)board/amcc/acadia
+	@echo "#define CONFIG_NAND_U_BOOT" > $(obj)include/config.h
+	@$(MKCONFIG) -n $@ -a acadia ppc ppc4xx acadia amcc
+	@echo "TEXT_BASE = 0x01000000" > $(obj)board/amcc/acadia/config.tmp
+	@echo "CONFIG_NAND_U_BOOT = y" >> $(obj)include/config.mk
+
 ADCIOP_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx adciop esd
 
diff --git a/board/amcc/acadia/Makefile b/board/amcc/acadia/Makefile
index abcbf3e..ddbcb80 100644
--- a/board/amcc/acadia/Makefile
+++ b/board/amcc/acadia/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	= $(BOARD).o cpr.o memory.o
+COBJS	= $(BOARD).o cmd_acadia.o cpr.o memory.o
 SOBJS	=
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/board/amcc/acadia/acadia.c b/board/amcc/acadia/acadia.c
index 3b63c8a..46d63e6 100644
--- a/board/amcc/acadia/acadia.c
+++ b/board/amcc/acadia/acadia.c
@@ -63,8 +63,14 @@ int board_early_init_f(void)
 	acadia_gpio_init();
 
 	/* Configure 405EZ for NAND usage */
-	mtsdr(sdrnand0, 0x80c00000);
-	mtsdr(sdrultra0, 0x8d110000);
+	mtsdr(sdrnand0, SDR_NAND0_NDEN | SDR_NAND0_NDAREN | SDR_NAND0_NDRBEN);
+	mfsdr(sdrultra0, reg);
+	reg &= ~SDR_ULTRA0_CSN_MASK;
+	reg |= (SDR_ULTRA0_CSNSEL0 >> CFG_NAND_CS) |
+		SDR_ULTRA0_NDGPIOBP |
+		SDR_ULTRA0_EBCRDYEN |
+		SDR_ULTRA0_NFSRSTEN;
+	mtsdr(sdrultra0, reg);
 
 	/* USB Host core needs this bit set */
 	mfsdr(sdrultra1, reg);
diff --git a/board/amcc/acadia/cmd_acadia.c b/board/amcc/acadia/cmd_acadia.c
new file mode 100644
index 0000000..fb7ea35
--- /dev/null
+++ b/board/amcc/acadia/cmd_acadia.c
@@ -0,0 +1,101 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@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
+ *
+ */
+
+#include <common.h>
+#include <command.h>
+#include <i2c.h>
+
+static u8 boot_267_nor[] = {
+	0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x8e, 0x00,
+	0x14, 0xc0, 0x36, 0xcc, 0x00, 0x0c, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00
+};
+
+static u8 boot_267_nand[] = {
+	0xd0, 0x38, 0xc3, 0x50, 0x13, 0x88, 0x8e, 0x00,
+	0x14, 0xc0, 0x36, 0xcc, 0x00, 0x0c, 0x00, 0x00,
+	0x00, 0x00, 0x00, 0x00
+};
+
+static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	u8 chip;
+	u8 *buf;
+	int cpu_freq;
+
+	if (argc < 3) {
+		printf("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	cpu_freq = simple_strtol(argv[1], NULL, 10);
+	if (cpu_freq != 267) {
+		printf("Unsupported cpu-frequency - only 267 supported\n");
+		return 1;
+	}
+
+	/* use 0x50 as I2C EEPROM address for now */
+	chip = 0x50;
+
+	if ((strcmp(argv[2], "nor") != 0) &&
+	    (strcmp(argv[2], "nand") != 0)) {
+		printf("Unsupported boot-device - only nor|nand support\n");
+		return 1;
+	}
+
+	if (strcmp(argv[2], "nand") == 0) {
+		switch (cpu_freq) {
+		case 267:
+			buf = boot_267_nand;
+			break;
+		default:
+			break;
+		}
+	} else {
+		switch (cpu_freq) {
+		case 267:
+			buf = boot_267_nor;
+			break;
+		default:
+			break;
+		}
+	}
+
+	if (i2c_write(chip, 0, 1, buf, 16) != 0)
+		printf("Error writing to EEPROM at address 0x%x\n", chip);
+	udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
+	if (i2c_write(chip, 0x10, 1, buf+16, 4) != 0)
+		printf("Error2 writing to EEPROM at address 0x%x\n", chip);
+
+	printf("Done\n");
+	printf("Please power-cycle the board for the changes to take effect\n");
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	bootstrap,	3,	0,	do_bootstrap,
+	"bootstrap - program the I2C bootstrap EEPROM\n",
+	"<cpu-freq> <nor|nand> - program the I2C bootstrap EEPROM\n"
+	);
diff --git a/board/amcc/acadia/config.mk b/board/amcc/acadia/config.mk
index c8566ec..af5a46c 100644
--- a/board/amcc/acadia/config.mk
+++ b/board/amcc/acadia/config.mk
@@ -21,6 +21,12 @@
 # MA 02111-1307 USA
 #
 
+#
+# AMCC 405EZ Reference Platform (Acadia) board
+#
+
+sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
+
 ifndef TEXT_BASE
 TEXT_BASE = 0xFFFC0000
 endif
diff --git a/board/amcc/acadia/memory.c b/board/amcc/acadia/memory.c
index 5375d36..25904d3 100644
--- a/board/amcc/acadia/memory.c
+++ b/board/amcc/acadia/memory.c
@@ -39,6 +39,7 @@ void sdram_init(void)
 	return;
 }
 
+#if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
 static void cram_bcr_write(u32 wr_val)
 {
 	wr_val <<= 2;
@@ -62,9 +63,12 @@ static void cram_bcr_write(u32 wr_val)
 
 	return;
 }
+#endif
 
 long int initdram(int board_type)
 {
+#if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
+	int i;
 	u32 val;
 
 	/* 1. EBC need to program READY, CLK, ADV for ASync mode */
@@ -92,7 +96,12 @@ long int initdram(int board_type)
 
 	/* Config EBC to use RDY */
 	mfsdr(sdrultra0, val);
-	mtsdr(sdrultra0, val | 0x04000000);
+	mtsdr(sdrultra0, val | SDR_ULTRA0_EBCRDYEN);
+
+	/* Wait a short while, since for NAND booting this is too fast */
+	for (i=0; i<200000; i++)
+		;
+#endif
 
 	return (CFG_MBYTES_RAM << 20);
 }
diff --git a/board/amcc/acadia/u-boot-nand.lds b/board/amcc/acadia/u-boot-nand.lds
new file mode 100644
index 0000000..a5dae0e
--- /dev/null
+++ b/board/amcc/acadia/u-boot-nand.lds
@@ -0,0 +1,137 @@
+/*
+ * (C) Copyright 2007
+ * 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_ARCH(powerpc)
+SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib);
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  . = + SIZEOF_HEADERS;
+  .interp : { *(.interp) }
+  .hash          : { *(.hash)		}
+  .dynsym        : { *(.dynsym)		}
+  .dynstr        : { *(.dynstr)		}
+  .rel.text      : { *(.rel.text)		}
+  .rela.text     : { *(.rela.text) 	}
+  .rel.data      : { *(.rel.data)		}
+  .rela.data     : { *(.rela.data) 	}
+  .rel.rodata    : { *(.rel.rodata) 	}
+  .rela.rodata   : { *(.rela.rodata) 	}
+  .rel.got       : { *(.rel.got)		}
+  .rela.got      : { *(.rela.got)		}
+  .rel.ctors     : { *(.rel.ctors)	}
+  .rela.ctors    : { *(.rela.ctors)	}
+  .rel.dtors     : { *(.rel.dtors)	}
+  .rela.dtors    : { *(.rela.dtors)	}
+  .rel.bss       : { *(.rel.bss)		}
+  .rela.bss      : { *(.rela.bss)		}
+  .rel.plt       : { *(.rel.plt)		}
+  .rela.plt      : { *(.rela.plt)		}
+  .init          : { *(.init)	}
+  .plt : { *(.plt) }
+  .text      :
+  {
+    /* WARNING - the following is hand-optimized to fit within	*/
+    /* the sector layout of our flash chips!	XXX FIXME XXX	*/
+
+    cpu/ppc4xx/start.o	(.text)
+
+    /* Align to next NAND block */
+    . = ALIGN(0x4000);
+    common/environment.o  (.ppcenv)
+    /* Keep some space here for redundant env and potential bad env blocks */
+    . = ALIGN(0x10000);
+
+    *(.text)
+    *(.fixup)
+    *(.got1)
+  }
+  _etext = .;
+  PROVIDE (etext = .);
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata1)
+    *(.rodata.str1.4)
+  }
+  .fini      : { *(.fini)    } =0
+  .ctors     : { *(.ctors)   }
+  .dtors     : { *(.dtors)   }
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x00FF) & 0xFFFFFF00;
+  _erotext = .;
+  PROVIDE (erotext = .);
+  .reloc   :
+  {
+    *(.got)
+    _GOT2_TABLE_ = .;
+    *(.got2)
+    _FIXUP_TABLE_ = .;
+    *(.fixup)
+  }
+  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >>2;
+  __fixup_entries = (. - _FIXUP_TABLE_)>>2;
+
+  .data    :
+  {
+    *(.data)
+    *(.data1)
+    *(.sdata)
+    *(.sdata2)
+    *(.dynamic)
+    CONSTRUCTORS
+  }
+  _edata  =  .;
+  PROVIDE (edata = .);
+
+  . = .;
+  __u_boot_cmd_start = .;
+  .u_boot_cmd : { *(.u_boot_cmd) }
+  __u_boot_cmd_end = .;
+
+
+  . = .;
+  __start___ex_table = .;
+  __ex_table : { *(__ex_table) }
+  __stop___ex_table = .;
+
+  . = ALIGN(256);
+  __init_begin = .;
+  .text.init : { *(.text.init) }
+  .data.init : { *(.data.init) }
+  . = ALIGN(256);
+  __init_end = .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss) *(.scommon)
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+  }
+
+  _end = . ;
+  PROVIDE (end = .);
+}
diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S
index 78de300..78d0042 100644
--- a/cpu/ppc4xx/start.S
+++ b/cpu/ppc4xx/start.S
@@ -155,7 +155,9 @@
 	 * NAND U-Boot image is started from offset 0
 	 */
 	.text
+#if defined(CONFIG_440)
 	bl	reconfig_tlb0
+#endif
 	GET_GOT
 	bl	cpu_init_f	/* run low-level CPU init code	   (from Flash) */
 	bl	board_init_f
@@ -857,6 +859,38 @@ _start:
 #endif /* CONFIG_405EZ */
 #endif
 
+#ifdef CONFIG_NAND_SPL
+	/*
+	 * Copy SPL from cache into internal SRAM
+	 */
+	li	r4,(CFG_NAND_BOOT_SPL_SIZE >> 2) - 1
+	mtctr	r4
+	lis	r2,CFG_NAND_BOOT_SPL_SRC@h
+	ori	r2,r2,CFG_NAND_BOOT_SPL_SRC@l
+	lis	r3,CFG_NAND_BOOT_SPL_DST@h
+	ori	r3,r3,CFG_NAND_BOOT_SPL_DST@l
+spl_loop:
+	lwzu	r4,4(r2)
+	stwu	r4,4(r3)
+	bdnz	spl_loop
+
+	/*
+	 * Jump to code in RAM
+	 */
+	bl	00f
+00:	mflr	r10
+	lis	r3,(CFG_NAND_BOOT_SPL_SRC - CFG_NAND_BOOT_SPL_DST)@h
+	ori	r3,r3,(CFG_NAND_BOOT_SPL_SRC - CFG_NAND_BOOT_SPL_DST)@l
+	sub	r10,r10,r3
+	addi	r10,r10,28
+	mtlr	r10
+	blr
+
+start_ram:
+	sync
+	isync
+#endif /* CONFIG_NAND_SPL */
+
 	/*----------------------------------------------------------------------- */
 	/* Setup temporary stack in DCACHE or OCM if needed for SDRAM SPD. */
 	/*----------------------------------------------------------------------- */
@@ -967,12 +1001,16 @@ _start:
 	stw	r0, +12(r1)		/* Save return addr (underflow vect) */
 #endif /* !(CFG_INIT_DCACHE_CS	|| !CFG_TEM_STACK_OCM) */
 
+#ifdef CONFIG_NAND_SPL
+	bl	nand_boot		/* will not return */
+#else
 	GET_GOT			/* initialize GOT access			*/
 
 	bl	cpu_init_f	/* run low-level CPU init code	   (from Flash) */
 
 	/* NEVER RETURNS! */
 	bl	board_init_f	/* run first part of init code (from Flash)	*/
+#endif /* CONFIG_NAND_SPL */
 
 #endif	/* CONFIG_405GP || CONFIG_405CR || CONFIG_405 || CONFIG_405EP */
 	/*----------------------------------------------------------------------- */
@@ -1187,23 +1225,6 @@ crit_return:
 
 /* Cache functions.
 */
-invalidate_icache:
-	iccci	r0,r0			/* for 405, iccci invalidates the */
-	blr				/*   entire I cache */
-
-invalidate_dcache:
-	addi	r6,0,0x0000		/* clear GPR 6 */
-	/* Do loop for # of dcache congruence classes. */
-	lis	r7, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@ha	/* TBS for large sized cache */
-	ori	r7, r7, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@l
-					/* NOTE: dccci invalidates both */
-	mtctr	r7			/* ways in the D cache */
-..dcloop:
-	dccci	0,r6			/* invalidate line */
-	addi	r6,r6, CFG_CACHELINE_SIZE /* bump to next line */
-	bdnz	..dcloop
-	blr
-
 flush_dcache:
 	addis	r9,r0,0x0002		/* set mask for EE and CE msr bits */
 	ori	r9,r9,0x8000
@@ -1734,6 +1755,23 @@ in32:
 	lwz	3,0x0000(3)
 	blr
 
+invalidate_icache:
+	iccci	r0,r0			/* for 405, iccci invalidates the */
+	blr				/*   entire I cache */
+
+invalidate_dcache:
+	addi	r6,0,0x0000		/* clear GPR 6 */
+	/* Do loop for # of dcache congruence classes. */
+	lis	r7, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@ha	/* TBS for large sized cache */
+	ori	r7, r7, (CFG_DCACHE_SIZE / CFG_CACHELINE_SIZE / 2)@l
+					/* NOTE: dccci invalidates both */
+	mtctr	r7			/* ways in the D cache */
+..dcloop:
+	dccci	0,r6			/* invalidate line */
+	addi	r6,r6, CFG_CACHELINE_SIZE /* bump to next line */
+	bdnz	..dcloop
+	blr
+
 /**************************************************************************/
 /* PPC405EP specific stuff						  */
 /**************************************************************************/
diff --git a/include/configs/acadia.h b/include/configs/acadia.h
index c72d933..0f447b0 100644
--- a/include/configs/acadia.h
+++ b/include/configs/acadia.h
@@ -109,6 +109,7 @@
 /*-----------------------------------------------------------------------
  * FLASH related
  *----------------------------------------------------------------------*/
+#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
 #define CFG_FLASH_CFI			/* The flash is CFI compatible	*/
 #define CFG_FLASH_CFI_DRIVER		/* Use common CFI driver	*/
 
@@ -122,6 +123,12 @@
 #define CFG_FLASH_USE_BUFFER_WRITE 1	/* use buffered writes (20x faster)	*/
 #define CFG_FLASH_EMPTY_INFO		/* print 'E' for empty sector on flinfo */
 
+#define	_CFG_CMD_INCLUDE	(CFG_CMD_ALL)
+#else
+#define	CFG_NO_FLASH		1	/* No NOR on Acadia when NAND-booting	*/
+#define	_CFG_CMD_INCLUDE	((CFG_CMD_ALL) & ~(CFG_CMD_FLASH | CFG_CMD_IMLS))
+#endif
+
 #ifdef CFG_ENV_IS_IN_FLASH
 #define CFG_ENV_SECT_SIZE	0x40000 /* size of one complete sector	*/
 #define CFG_ENV_ADDR		(CFG_MONITOR_BASE-CFG_ENV_SECT_SIZE)
@@ -132,6 +139,63 @@
 #define CFG_ENV_SIZE_REDUND	(CFG_ENV_SIZE)
 #endif
 
+/*
+ * IPL (Initial Program Loader, integrated inside CPU)
+ * Will load first 4k from NAND (SPL) into cache and execute it from there.
+ *
+ * SPL (Secondary Program Loader)
+ * Will load special U-Boot version (NUB) from NAND and execute it. This SPL
+ * has to fit into 4kByte. It sets up the CPU and configures the SDRAM
+ * controller and the NAND controller so that the special U-Boot image can be
+ * loaded from NAND to SDRAM.
+ *
+ * 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.
+ *
+ * On 440EPx the SPL is copied to SDRAM before the NAND controller is
+ * set up. While still running from cache, I experienced problems accessing
+ * the NAND controller.	sr - 2006-08-25
+ */
+#define CFG_NAND_BOOT_SPL_SRC	0xfffff000	/* SPL location			*/
+#define CFG_NAND_BOOT_SPL_SIZE	(4 << 10)	/* SPL size			*/
+#define CFG_NAND_BOOT_SPL_DST	(CFG_OCM_DATA_ADDR + (12 << 10)) /* Copy SPL here*/
+#define CFG_NAND_U_BOOT_DST	0x01000000	/* Load NUB to this addr	*/
+#define CFG_NAND_U_BOOT_START	CFG_NAND_U_BOOT_DST /* Start NUB from this addr	*/
+#define CFG_NAND_BOOT_SPL_DELTA	(CFG_NAND_BOOT_SPL_SRC - CFG_NAND_BOOT_SPL_DST)
+
+/*
+ * Define the partitioning of the NAND chip (only RAM U-Boot is needed here)
+ */
+#define CFG_NAND_U_BOOT_OFFS	(16 << 10)	/* Offset to RAM U-Boot image	*/
+#define CFG_NAND_U_BOOT_SIZE	(384 << 10)	/* Size of RAM U-Boot image	*/
+
+/*
+ * Now the NAND chip has to be defined (no autodetection used!)
+ */
+#define CFG_NAND_PAGE_SIZE	512		/* NAND chip page size		*/
+#define CFG_NAND_BLOCK_SIZE	(16 << 10)	/* NAND chip block size		*/
+#define CFG_NAND_PAGE_COUNT	32		/* NAND chip page count		*/
+#define CFG_NAND_BAD_BLOCK_POS	5		/* Location of bad block marker	*/
+#undef CFG_NAND_4_ADDR_CYCLE			/* No fourth addr used (<=32MB)	*/
+
+#define CFG_NAND_ECCSIZE	256
+#define CFG_NAND_ECCBYTES	3
+#define CFG_NAND_ECCSTEPS	(CFG_NAND_PAGE_SIZE / CFG_NAND_ECCSIZE)
+#define CFG_NAND_OOBSIZE	16
+#define CFG_NAND_ECCTOTAL	(CFG_NAND_ECCBYTES * CFG_NAND_ECCSTEPS)
+#define CFG_NAND_ECCPOS		{0, 1, 2, 3, 6, 7}
+
+#ifdef CFG_ENV_IS_IN_NAND
+/*
+ * For NAND booting the environment is embedded in the U-Boot image. Please take
+ * look at the file board/amcc/sequoia/u-boot-nand.lds for details.
+ */
+#define CFG_ENV_SIZE		CFG_NAND_BLOCK_SIZE
+#define CFG_ENV_OFFSET		(CFG_NAND_U_BOOT_OFFS + CFG_ENV_SIZE)
+#define CFG_ENV_OFFSET_REDUND	(CFG_ENV_OFFSET + CFG_ENV_SIZE)
+#endif
+
 /*-----------------------------------------------------------------------
  * RAM (CRAM)
  *----------------------------------------------------------------------*/
@@ -209,7 +273,11 @@
 	"update=protect off fffc0000 ffffffff;era fffc0000 ffffffff;"	\
 		"cp.b ${fileaddr} fffc0000 ${filesize};"		\
 		"setenv filesize;saveenv\0"				\
-	"upd=run load;run update\0"					\
+	"upd=run load update\0"						\
+	"nload=tftp 200000 acadia/u-boot-nand.bin\0"			\
+	"nupdate=nand erase 0 60000;nand write 200000 0 60000;"		\
+		"setenv filesize;saveenv\0"				\
+	"nupd=run nload nupdate\0"					\
 	"kozio=bootm ffc60000\0"					\
 	""
 #define CONFIG_BOOTCOMMAND	"run flash_self"
@@ -233,24 +301,24 @@
 
 #define CONFIG_SUPPORT_VFAT
 
-#define CONFIG_COMMANDS       (CONFIG_CMD_DFL	|	\
-			       CFG_CMD_ASKENV	|	\
-			       CFG_CMD_DHCP	|	\
-			       CFG_CMD_DTT	|	\
-			       CFG_CMD_DIAG	|	\
-			       CFG_CMD_EEPROM	|	\
-			       CFG_CMD_ELF	|	\
-			       CFG_CMD_FAT	|	\
-			       CFG_CMD_I2C	|	\
-			       CFG_CMD_IRQ	|	\
-			       CFG_CMD_MII	|	\
-			       CFG_CMD_NAND	|	\
-			       CFG_CMD_NET	|	\
-			       CFG_CMD_NFS	|	\
-			       CFG_CMD_PCI	|	\
-			       CFG_CMD_PING	|	\
-			       CFG_CMD_REGINFO	|	\
-			       CFG_CMD_USB)
+#define CONFIG_COMMANDS	((CONFIG_CMD_DFL & _CFG_CMD_INCLUDE)	|	\
+			 CFG_CMD_ASKENV	|				\
+			 CFG_CMD_DHCP	|				\
+			 CFG_CMD_DTT	|				\
+			 CFG_CMD_DIAG	|				\
+			 CFG_CMD_EEPROM	|				\
+			 CFG_CMD_ELF	|				\
+			 CFG_CMD_FAT	|				\
+			 CFG_CMD_I2C	|				\
+			 CFG_CMD_IRQ	|				\
+			 CFG_CMD_MII	|				\
+			 CFG_CMD_NAND	|				\
+			 CFG_CMD_NET	|				\
+			 CFG_CMD_NFS	|				\
+			 CFG_CMD_PCI	|				\
+			 CFG_CMD_PING	|				\
+			 CFG_CMD_REGINFO |				\
+			 CFG_CMD_USB)
 
 /* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
 #include <cmd_confdefs.h>
@@ -312,12 +380,16 @@
 /*-----------------------------------------------------------------------
  * External Bus Controller (EBC) Setup
  *----------------------------------------------------------------------*/
-#define CFG_NAND_CS		3		/* NAND chip connected to CSx	*/
-
+#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+#define CFG_NAND_CS		3
 /* Memory Bank 0 (Flash) initialization						*/
 #define CFG_EBC_PB0AP		0x03337200
 #define CFG_EBC_PB0CR		0xfe0bc000
 
+/* Memory Bank 3 (NAND-FLASH) initialization					*/
+#define CFG_EBC_PB3AP		0x018003c0
+#define CFG_EBC_PB3CR		(CFG_NAND_ADDR | 0x1c000)
+
 /* Just initial configuration for CRAM. Will be changed in memory.c to sync mode*/
 /* Memory Bank 1 (CRAM) initialization						*/
 #define CFG_EBC_PB1AP		0x030400c0
@@ -326,10 +398,24 @@
 /* Memory Bank 2 (CRAM) initialization						*/
 #define CFG_EBC_PB2AP		0x030400c0
 #define CFG_EBC_PB2CR		0x020bc000
+#else
+#define CFG_NAND_CS		0		/* NAND chip connected to CSx	*/
+/* Memory Bank 0 (NAND-FLASH) initialization					*/
+#define CFG_EBC_PB0AP		0x018003c0
+#define CFG_EBC_PB0CR		(CFG_NAND_ADDR | 0x1c000)
 
-/* Memory Bank 3 (NAND-FLASH) initialization					*/
-#define CFG_EBC_PB3AP		0x018003c0
-#define CFG_EBC_PB3CR		(CFG_NAND_ADDR | 0x1c000)
+/*
+ * When NAND-booting the CRAM EBC setup must be done in sync mode, since the
+ * NAND-SPL already initialized the CRAM and EBC to sync mode.
+ */
+/* Memory Bank 1 (CRAM) initialization						*/
+#define CFG_EBC_PB1AP		0x9C0201C0
+#define CFG_EBC_PB1CR		0x000bc000
+
+/* Memory Bank 2 (CRAM) initialization						*/
+#define CFG_EBC_PB2AP		0x9C0201C0
+#define CFG_EBC_PB2CR		0x020bc000
+#endif
 
 /* Memory Bank 4 (CPLD) initialization						*/
 #define CFG_EBC_PB4AP		0x04006000
@@ -341,9 +427,9 @@
  * GPIO Setup
  *----------------------------------------------------------------------*/
 #define CFG_GPIO_CRAM_CLK	8
-#define CFG_GPIO_CRAM_WAIT	9
+#define CFG_GPIO_CRAM_WAIT	9		/* GPIO-In		*/
 #define CFG_GPIO_CRAM_ADV	10
-#define CFG_GPIO_CRAM_CRE	(32 + 21)
+#define CFG_GPIO_CRAM_CRE	(32 + 21)	/* GPIO-Out		*/
 
 /*-----------------------------------------------------------------------
  * Definitions for GPIO_0 setup (PPC405EZ specific)
@@ -365,10 +451,10 @@
  * GPIO0[28-30]	- Trace Outputs / PWM Inputs
  * GPIO0[31]	- PWM_8 I/O
  */
-#define CFG_GPIO0_TCR		0xC0000000
-#define CFG_GPIO0_OSRL		0x50000000
+#define CFG_GPIO0_TCR		0xC0A00000
+#define CFG_GPIO0_OSRL		0x50004400
 #define CFG_GPIO0_OSRH		0x02000055
-#define CFG_GPIO0_ISR1L		0x00000000
+#define CFG_GPIO0_ISR1L		0x00001000
 #define CFG_GPIO0_ISR1H		0x00000055
 #define CFG_GPIO0_TSRL		0x02000000
 #define CFG_GPIO0_TSRH		0x00000055
@@ -387,13 +473,13 @@
  * GPIO1[16]	- SPI_SS_1_N Output
  * GPIO1[17-20]	- Trace Output/External Interrupts IRQ0 - IRQ3 inputs
  */
-#define CFG_GPIO1_OSRH		0x55455555
+#define CFG_GPIO1_TCR		0xFFFF8414
 #define CFG_GPIO1_OSRL		0x40000110
-#define CFG_GPIO1_ISR1H		0x00000000
+#define CFG_GPIO1_OSRH		0x55455555
 #define CFG_GPIO1_ISR1L		0x15555445
-#define CFG_GPIO1_TSRH		0x00000000
+#define CFG_GPIO1_ISR1H		0x00000000
 #define CFG_GPIO1_TSRL		0x00000000
-#define CFG_GPIO1_TCR		0xFFFF8014
+#define CFG_GPIO1_TSRH		0x00000000
 
 /*
  * Internal Definitions
diff --git a/include/ppc405.h b/include/ppc405.h
index fffae4d..71ad12e 100644
--- a/include/ppc405.h
+++ b/include/ppc405.h
@@ -556,6 +556,11 @@
 #define sdricintstat	0x4510
 
 #define SDR_NAND0_NDEN		0x80000000
+#define SDR_NAND0_NDBTEN	0x40000000
+#define SDR_NAND0_NDBADR_MASK	0x30000000
+#define SDR_NAND0_NDBPG_MASK	0x0f000000
+#define SDR_NAND0_NDAREN	0x00800000
+#define SDR_NAND0_NDRBEN	0x00400000
 
 #define SDR_ULTRA0_NDGPIOBP	0x80000000
 #define SDR_ULTRA0_CSN_MASK	0x78000000
@@ -563,6 +568,9 @@
 #define SDR_ULTRA0_CSNSEL1	0x20000000
 #define SDR_ULTRA0_CSNSEL2	0x10000000
 #define SDR_ULTRA0_CSNSEL3	0x08000000
+#define SDR_ULTRA0_EBCRDYEN	0x04000000
+#define SDR_ULTRA0_SPISSINEN	0x02000000
+#define SDR_ULTRA0_NFSRSTEN	0x01000000
 
 #define SDR_ULTRA1_LEDNENABLE	0x40000000
 
diff --git a/nand_spl/board/amcc/acadia/Makefile b/nand_spl/board/amcc/acadia/Makefile
new file mode 100644
index 0000000..0d6828a
--- /dev/null
+++ b/nand_spl/board/amcc/acadia/Makefile
@@ -0,0 +1,104 @@
+#
+# (C) Copyright 2007
+# Stefan Roese, DENX Software Engineering, sr@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
+#
+
+include $(TOPDIR)/config.mk
+include $(TOPDIR)/nand_spl/board/$(BOARDDIR)/config.mk
+
+LDSCRIPT= $(TOPDIR)/nand_spl/board/$(BOARDDIR)/u-boot.lds
+LDFLAGS	= -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
+AFLAGS	+= -DCONFIG_NAND_SPL
+CFLAGS	+= -DCONFIG_NAND_SPL
+
+SOBJS	= start.o resetvec.o
+COBJS	= gpio.o nand_boot.o nand_ecc.o memory.o ndfc.o
+
+SRCS	:= $(addprefix $(obj),$(SOBJS:.o=.S) $(COBJS:.o=.c))
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+__OBJS	:= $(SOBJS) $(COBJS)
+LNDIR	:= $(OBJTREE)/nand_spl/board/$(BOARDDIR)
+
+nandobj	:= $(OBJTREE)/nand_spl/
+
+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)
+	cd $(LNDIR) && $(LD) $(LDFLAGS) $$UNDEF_SYM $(__OBJS) \
+		-Map $(nandobj)u-boot-spl.map \
+		-o $(nandobj)u-boot-spl
+
+# create symbolic links for common files
+
+# from cpu directory
+$(obj)gpio.c:
+	@rm -f $(obj)gpio.c
+	ln -s $(SRCTREE)/cpu/ppc4xx/gpio.c $(obj)gpio.c
+
+$(obj)ndfc.c:
+	@rm -f $(obj)ndfc.c
+	ln -s $(SRCTREE)/cpu/ppc4xx/ndfc.c $(obj)ndfc.c
+
+$(obj)resetvec.S:
+	@rm -f $(obj)resetvec.S
+	ln -s $(SRCTREE)/cpu/ppc4xx/resetvec.S $(obj)resetvec.S
+
+$(obj)start.S:
+	@rm -f $(obj)start.S
+	ln -s $(SRCTREE)/cpu/ppc4xx/start.S $(obj)start.S
+
+# from board directory
+$(obj)memory.c:
+	@rm -f $(obj)memory.c
+	ln -s $(SRCTREE)/board/amcc/acadia/memory.c $(obj)memory.c
+
+# from nand_spl directory
+$(obj)nand_boot.c:
+	@rm -f $(obj)nand_boot.c
+	ln -s $(SRCTREE)/nand_spl/nand_boot.c $(obj)nand_boot.c
+
+# from drivers/nand directory
+$(obj)nand_ecc.c:
+	@rm -f $(obj)nand_ecc.c
+	ln -s $(SRCTREE)/drivers/nand/nand_ecc.c $(obj)nand_ecc.c
+
+#########################################################################
+
+$(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 $(obj).depend
+
+#########################################################################
diff --git a/nand_spl/board/amcc/acadia/config.mk b/nand_spl/board/amcc/acadia/config.mk
new file mode 100644
index 0000000..55069b4
--- /dev/null
+++ b/nand_spl/board/amcc/acadia/config.mk
@@ -0,0 +1,47 @@
+#
+# (C) Copyright 2007
+# Stefan Roese, DENX Software Engineering, sr@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+#
+# AMCC 405EZ Reference Platform (Acadia) board
+#
+
+#
+# TEXT_BASE for SPL:
+#
+# On 4xx platforms the SPL is located at 0xfffff000...0xffffffff,
+# in the last 4kBytes of memory space in cache.
+# We will copy this SPL into internal SRAM in start.S. So we set
+# TEXT_BASE to starting address in internal SRAM here.
+#
+TEXT_BASE = 0xF8003000
+
+# PAD_TO used to generate a 16kByte binary needed for the combined image
+# -> PAD_TO = TEXT_BASE + 0x4000
+PAD_TO	= 0xF8007000
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif
+
+ifeq ($(dbcr),1)
+PLATFORM_CPPFLAGS += -DCFG_INIT_DBCR=0x8cff0000
+endif
diff --git a/nand_spl/board/amcc/acadia/u-boot.lds b/nand_spl/board/amcc/acadia/u-boot.lds
new file mode 100644
index 0000000..018def1
--- /dev/null
+++ b/nand_spl/board/amcc/acadia/u-boot.lds
@@ -0,0 +1,63 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@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_ARCH(powerpc:common)
+SECTIONS
+{
+  .resetvec 0xF8003FFC :
+  {
+    *(.resetvec)
+  } = 0xffff
+
+  .text      :
+  {
+    start.o	(.text)
+    nand_boot.o	(.text)
+    ndfc.o	(.text)
+
+    *(.text)
+    *(.fixup)
+  }
+  _etext = .;
+
+  .data    :
+  {
+    *(.rodata*)
+    *(.data*)
+    *(.sdata*)
+    __got2_start = .;
+    *(.got2)
+    __got2_end = .;
+  }
+
+  _edata  =  .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss)
+   *(.bss)
+  }
+
+  _end = . ;
+}