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

6 files changed, 369 insertions, 41 deletions

diff --git a/nand_spl/board/amcc/bamboo/Makefile b/nand_spl/board/amcc/bamboo/Makefile
new file mode 100644
index 00000000000..0df86f99d45
--- /dev/null
+++ b/nand_spl/board/amcc/bamboo/Makefile
@@ -0,0 +1,100 @@
+#
+# (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 init.o resetvec.o
+COBJS	= nand_boot.o nand_ecc.o ndfc.o sdram.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)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)init.S:
+	@rm -f $(obj)init.S
+	ln -s $(SRCTREE)/board/amcc/bamboo/init.S $(obj)init.S
+
+# from nand_spl directory
+$(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 $(obj).depend
+
+#########################################################################
diff --git a/nand_spl/board/amcc/bamboo/config.mk b/nand_spl/board/amcc/bamboo/config.mk
new file mode 100644
index 00000000000..f7ec7514f00
--- /dev/null
+++ b/nand_spl/board/amcc/bamboo/config.mk
@@ -0,0 +1,49 @@
+#
+# (C) Copyright 2007
+# Stefan Roese, DENX Software Engineering, sr@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+#
+# AMCC 440EP Reference Platform (Bamboo) board
+#
+
+#
+# TEXT_BASE for SPL:
+#
+# On 440EP(x) platforms the SPL is located at 0xfffff000...0xffffffff,
+# in the last 4kBytes of memory space in cache.
+# We will copy this SPL into instruction-cache in start.S. So we set
+# TEXT_BASE to starting address in i-cache here.
+#
+TEXT_BASE = 0x00800000
+
+# PAD_TO used to generate a 16kByte binary needed for the combined image
+# -> PAD_TO = TEXT_BASE + 0x4000
+PAD_TO	= 0x00804000
+
+PLATFORM_CPPFLAGS += -DCONFIG_440=1
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif
+
+ifeq ($(dbcr),1)
+PLATFORM_CPPFLAGS += -DCFG_INIT_DBCR=0x8cff0000
+endif
diff --git a/nand_spl/board/amcc/bamboo/sdram.c b/nand_spl/board/amcc/bamboo/sdram.c
new file mode 100644
index 00000000000..4f09072df08
--- /dev/null
+++ b/nand_spl/board/amcc/bamboo/sdram.c
@@ -0,0 +1,92 @@
+/*
+ * (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 <ppc4xx.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+static void wait_init_complete(void)
+{
+	u32 val;
+
+	do {
+		mfsdram(mem_mcsts, val);
+	} while (!(val & 0x80000000));
+}
+
+/*
+ * early_sdram_init()
+ *
+ * As the name already indicates, this function is called very early
+ * from start.S and configures the SDRAM with fixed values. This is needed,
+ * since the 440EP has no internal SRAM and the 4kB NAND_SPL loader has
+ * not enough free space to implement the complete I2C SPD DDR autodetection
+ * routines. Therefore the Bamboo only supports the onboard 64MBytes of SDRAM
+ * when booting from NAND flash.
+ */
+void early_sdram_init(void)
+{
+	/*
+	 * Soft-reset SDRAM controller.
+	 */
+	mtsdr(sdr_srst, SDR0_SRST_DMC);
+	mtsdr(sdr_srst, 0x00000000);
+
+	/*
+	 * Disable memory controller.
+	 */
+	mtsdram(mem_cfg0, 0x00000000);
+
+	/*
+	 * Setup some default
+	 */
+	mtsdram(mem_uabba, 0x00000000); /* ubba=0 (default)		*/
+	mtsdram(mem_slio, 0x00000000);	/* rdre=0 wrre=0 rarw=0		*/
+	mtsdram(mem_devopt, 0x00000000); /* dll=0 ds=0 (normal)		*/
+	mtsdram(mem_wddctr, 0x00000000); /* wrcp=0 dcd=0		*/
+	mtsdram(mem_clktr, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0	*/
+
+	/*
+	 * Following for CAS Latency = 2.5 @ 133 MHz PLB
+	 */
+	mtsdram(mem_b0cr, 0x00082001);
+	mtsdram(mem_tr0, 0x41094012);
+	mtsdram(mem_tr1, 0x8080083d);	/* SS=T2 SL=STAGE 3 CD=1 CT=0x00*/
+	mtsdram(mem_rtr, 0x04100000);	/* Interval 7.8µs @ 133MHz PLB	*/
+	mtsdram(mem_cfg1, 0x00000000);	/* Self-refresh exit, disable PM*/
+
+	/*
+	 * Enable the controller, then wait for DCEN to complete
+	 */
+	mtsdram(mem_cfg0, 0x80000000); /* DCEN=1, PMUD=0*/
+	wait_init_complete();
+}
+
+long int initdram(int board_type)
+{
+	/*
+	 * Nothing to do here, just return size of fixed SDRAM setup
+	 */
+	return CFG_MBYTES_SDRAM << 20;
+}
diff --git a/nand_spl/board/amcc/bamboo/u-boot.lds b/nand_spl/board/amcc/bamboo/u-boot.lds
new file mode 100644
index 00000000000..28228f84ddc
--- /dev/null
+++ b/nand_spl/board/amcc/bamboo/u-boot.lds
@@ -0,0 +1,65 @@
+/*
+ * (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 0x00800FFC :
+  {
+    *(.resetvec)
+  } = 0xffff
+
+  .text      :
+  {
+    start.o	(.text)
+    init.o	(.text)
+    nand_boot.o	(.text)
+    sdram.o	(.text)
+    ndfc.o	(.text)
+
+    *(.text)
+    *(.fixup)
+  }
+  _etext = .;
+
+  .data    :
+  {
+    *(.rodata*)
+    *(.data*)
+    *(.sdata*)
+    __got2_start = .;
+    *(.got2)
+    __got2_end = .;
+  }
+
+  _edata  =  .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss)
+   *(.bss)
+  }
+
+  _end = . ;
+}
diff --git a/nand_spl/board/amcc/sequoia/Makefile b/nand_spl/board/amcc/sequoia/Makefile
index b42da8cf682..ec1be5a768a 100644
--- a/nand_spl/board/amcc/sequoia/Makefile
+++ b/nand_spl/board/amcc/sequoia/Makefile
@@ -1,5 +1,5 @@
 #
-# (C) Copyright 2006
+# (C) Copyright 2006-2007
 # Stefan Roese, DENX Software Engineering, sr@denx.de.
 #
 # See file CREDITS for list of people who contributed to this
@@ -30,7 +30,7 @@ AFLAGS	+= -DCONFIG_NAND_SPL
 CFLAGS	+= -DCONFIG_NAND_SPL
 
 SOBJS	= start.o init.o resetvec.o
-COBJS	= nand_boot.o ndfc.o sdram.o
+COBJS	= nand_boot.o nand_ecc.o ndfc.o sdram.o
 
 SRCS	:= $(addprefix $(obj),$(SOBJS:.o=.S) $(COBJS:.o=.c))
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
@@ -85,6 +85,11 @@ $(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
diff --git a/nand_spl/nand_boot.c b/nand_spl/nand_boot.c
index a136fb70745..840a5965967 100644
--- a/nand_spl/nand_boot.c
+++ b/nand_spl/nand_boot.c
@@ -1,5 +1,5 @@
 /*
- * (C) Copyright 2006
+ * (C) Copyright 2006-2007
  * Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -24,27 +24,28 @@
 #define CFG_NAND_READ_DELAY \
 	{ volatile int dummy; int i; for (i=0; i<10000; i++) dummy = i; }
 
+static int nand_ecc_pos[] = CFG_NAND_ECCPOS;
+
 extern void board_nand_init(struct nand_chip *nand);
-extern void ndfc_hwcontrol(struct mtd_info *mtdinfo, int cmd);
-extern void ndfc_write_byte(struct mtd_info *mtdinfo, u_char byte);
-extern u_char ndfc_read_byte(struct mtd_info *mtdinfo);
-extern int ndfc_dev_ready(struct mtd_info *mtdinfo);
-extern int jump_to_ram(ulong delta);
-extern int jump_to_uboot(ulong addr);
 
-static int nand_is_bad_block(struct mtd_info *mtd, int block)
+static int nand_command(struct mtd_info *mtd, int block, int page, int offs, u8 cmd)
 {
 	struct nand_chip *this = mtd->priv;
-	int page_addr = block * CFG_NAND_PAGE_COUNT;
+	int page_addr = page + block * CFG_NAND_PAGE_COUNT;
+
+	if (this->dev_ready)
+		this->dev_ready(mtd);
+	else
+		CFG_NAND_READ_DELAY;
 
 	/* Begin command latch cycle */
 	this->hwcontrol(mtd, NAND_CTL_SETCLE);
-	this->write_byte(mtd, NAND_CMD_READOOB);
+	this->write_byte(mtd, cmd);
 	/* Set ALE and clear CLE to start address cycle */
 	this->hwcontrol(mtd, NAND_CTL_CLRCLE);
 	this->hwcontrol(mtd, NAND_CTL_SETALE);
 	/* Column address */
-	this->write_byte(mtd, CFG_NAND_BAD_BLOCK_POS);			/* A[7:0] */
+	this->write_byte(mtd, offs);					/* A[7:0] */
 	this->write_byte(mtd, (uchar)(page_addr & 0xff));		/* A[16:9] */
 	this->write_byte(mtd, (uchar)((page_addr >> 8) & 0xff));	/* A[24:17] */
 #ifdef CFG_NAND_4_ADDR_CYCLE
@@ -62,6 +63,15 @@ static int nand_is_bad_block(struct mtd_info *mtd, int block)
 	else
 		CFG_NAND_READ_DELAY;
 
+	return 0;
+}
+
+static int nand_is_bad_block(struct mtd_info *mtd, int block)
+{
+	struct nand_chip *this = mtd->priv;
+
+	nand_command(mtd, block, 0, CFG_NAND_BAD_BLOCK_POS, NAND_CMD_READOOB);
+
 	/*
 	 * Read on byte
 	 */
@@ -74,39 +84,46 @@ static int nand_is_bad_block(struct mtd_info *mtd, int block)
 static int nand_read_page(struct mtd_info *mtd, int block, int page, uchar *dst)
 {
 	struct nand_chip *this = mtd->priv;
-	int page_addr = page + block * CFG_NAND_PAGE_COUNT;
+	u_char *ecc_calc;
+	u_char *ecc_code;
+	u_char *oob_data;
 	int i;
+	int eccsize = CFG_NAND_ECCSIZE;
+	int eccbytes = CFG_NAND_ECCBYTES;
+	int eccsteps = CFG_NAND_ECCSTEPS;
+	uint8_t *p = dst;
+	int stat;
 
-	/* Begin command latch cycle */
-	this->hwcontrol(mtd, NAND_CTL_SETCLE);
-	this->write_byte(mtd, NAND_CMD_READ0);
-	/* Set ALE and clear CLE to start address cycle */
-	this->hwcontrol(mtd, NAND_CTL_CLRCLE);
-	this->hwcontrol(mtd, NAND_CTL_SETALE);
-	/* Column address */
-	this->write_byte(mtd, 0);					/* A[7:0] */
-	this->write_byte(mtd, (uchar)(page_addr & 0xff));		/* A[16:9] */
-	this->write_byte(mtd, (uchar)((page_addr >> 8) & 0xff));	/* A[24:17] */
-#ifdef CFG_NAND_4_ADDR_CYCLE
-	/* One more address cycle for devices > 32MiB */
-	this->write_byte(mtd, (uchar)((page_addr >> 16) & 0x0f));	/* A[xx:25] */
-#endif
-	/* Latch in address */
-	this->hwcontrol(mtd, NAND_CTL_CLRALE);
+	nand_command(mtd, block, page, 0, NAND_CMD_READ0);
 
-	/*
-	 * Wait a while for the data to be ready
+	/* No malloc available for now, just use some temporary locations
+	 * in SDRAM
 	 */
-	if (this->dev_ready)
-		this->dev_ready(mtd);
-	else
-		CFG_NAND_READ_DELAY;
+	ecc_calc = (u_char *)(CFG_SDRAM_BASE + 0x10000);
+	ecc_code = ecc_calc + 0x100;
+	oob_data = ecc_calc + 0x200;
+
+	for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+		this->enable_hwecc(mtd, NAND_ECC_READ);
+		this->read_buf(mtd, p, eccsize);
+		this->calculate_ecc(mtd, p, &ecc_calc[i]);
+	}
+	this->read_buf(mtd, oob_data, CFG_NAND_OOBSIZE);
 
-	/*
-	 * Read page into buffer
-	 */
-	for (i=0; i<CFG_NAND_PAGE_SIZE; i++)
-		*dst++ = this->read_byte(mtd);
+	/* Pick the ECC bytes out of the oob data */
+	for (i = 0; i < CFG_NAND_ECCTOTAL; i++)
+		ecc_code[i] = oob_data[nand_ecc_pos[i]];
+
+	eccsteps = CFG_NAND_ECCSTEPS;
+	p = dst;
+
+	for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+		/* No chance to do something with the possible error message
+		 * from correct_data(). We just hope that all possible errors
+		 * are corrected by this routine.
+		 */
+		stat = this->correct_data(mtd, p, &ecc_code[i], &ecc_calc[i]);
+	}
 
 	return 0;
 }