ppc4xx: Add AMCC Kilauea/Haleakala NAND booting support

This patch adds NAND booting support for the AMCC 405EX(r) eval boards.
Again, only one image supports both targets.

Signed-off-by: Stefan Roese <sr@denx.de>

9 files changed, 457 insertions, 10 deletions

diff --git a/MAKEALL b/MAKEALL
index 67b39c3..ef181ba 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -181,6 +181,7 @@ LIST_4xx="		\
 	EXBITGEN	\
 	G2000		\
 	haleakala	\
+	haleakala_nand	\
 	hcu4		\
 	hcu5		\
 	HH405		\
@@ -189,6 +190,7 @@ LIST_4xx="		\
 	KAREF		\
 	katmai		\
 	kilauea		\
+	kilauea_nand	\
 	luan		\
 	lwmon5		\
 	makalu		\
diff --git a/Makefile b/Makefile
index 814bba8..35f8d31 100644
--- a/Makefile
+++ b/Makefile
@@ -1173,6 +1173,15 @@ kilauea_config \
 haleakala_config: unconfig
 	@$(MKCONFIG) -n $@ -a kilauea ppc ppc4xx kilauea amcc
 
+kilauea_nand_config \
+haleakala_nand_config: unconfig
+	@mkdir -p $(obj)include $(obj)board/amcc/kilauea
+	@mkdir -p $(obj)nand_spl/board/amcc/kilauea
+	@echo "#define CONFIG_NAND_U_BOOT" > $(obj)include/config.h
+	@$(MKCONFIG) -n $@ -a kilauea ppc ppc4xx kilauea amcc
+	@echo "TEXT_BASE = 0x01000000" > $(obj)board/amcc/kilauea/config.tmp
+	@echo "CONFIG_NAND_U_BOOT = y" >> $(obj)include/config.mk
+
 luan_config:	unconfig
 	@$(MKCONFIG) $(@:_config=) ppc ppc4xx luan amcc
 
diff --git a/board/amcc/kilauea/config.mk b/board/amcc/kilauea/config.mk
index a46b197..f5800eb 100644
--- a/board/amcc/kilauea/config.mk
+++ b/board/amcc/kilauea/config.mk
@@ -1,5 +1,5 @@
 #
-# (C) Copyright 2000
+# (C) Copyright 2007
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #
 # See file CREDITS for list of people who contributed to this
@@ -21,4 +21,12 @@
 # MA 02111-1307 USA
 #
 
+sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
+
+ifndef TEXT_BASE
 TEXT_BASE = 0xFFFA0000
+endif
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif
diff --git a/board/amcc/kilauea/init.S b/board/amcc/kilauea/init.S
index 96358c6..4338744 100644
--- a/board/amcc/kilauea/init.S
+++ b/board/amcc/kilauea/init.S
@@ -38,6 +38,7 @@
 
 	.globl  ext_bus_cntlr_init
 ext_bus_cntlr_init:
+#if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
 
 	/*
 	 * DDR2 setup
@@ -148,5 +149,6 @@ pll_wait:
 
 	/* Enable memory controller */
 	mtsdram_as(SDRAM_MCOPT2, 0x28000000);
+#endif /* #ifndef CONFIG_NAND_U_BOOT */
 
 	blr
diff --git a/board/amcc/kilauea/u-boot-nand.lds b/board/amcc/kilauea/u-boot-nand.lds
new file mode 100644
index 0000000..a5dae0e
--- /dev/null
+++ b/board/amcc/kilauea/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/include/configs/kilauea.h b/include/configs/kilauea.h
index caf8b52..07f7eff 100644
--- a/include/configs/kilauea.h
+++ b/include/configs/kilauea.h
@@ -50,7 +50,7 @@
 #define CFG_FPGA_BASE		0xF0000000
 #define CFG_PERIPHERAL_BASE	0xEF600000      /* internal peripherals*/
 #define CFG_MONITOR_LEN		(384 * 1024)	/* Reserve 384 kB for Monitor	*/
-#define CFG_MALLOC_LEN		(128 * 1024)	/* Reserve 128 kB for malloc()	*/
+#define CFG_MALLOC_LEN		(512 * 1024)	/* Reserve 512 kB for malloc()	*/
 #define CFG_MONITOR_BASE	(TEXT_BASE)
 
 /*-----------------------------------------------------------------------
@@ -117,6 +117,71 @@
 #define CFG_ENV_SIZE_REDUND	(CFG_ENV_SIZE)
 #endif /* CFG_ENV_IS_IN_FLASH */
 
+/*
+ * 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	0x00800000	/* 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	*/
+#define CFG_NAND_4_ADDR_CYCLE	1		/* 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
+
+/*-----------------------------------------------------------------------
+ * NAND FLASH
+ *----------------------------------------------------------------------*/
+#define CFG_MAX_NAND_DEVICE	1
+#define NAND_MAX_CHIPS		1
+#define CFG_NAND_BASE		(CFG_NAND_ADDR + CFG_NAND_CS)
+#define CFG_NAND_SELECT_DEVICE  1	/* nand driver supports mutipl. chips	*/
+
 /*-----------------------------------------------------------------------
  * DDR SDRAM
  *----------------------------------------------------------------------*/
@@ -332,6 +397,18 @@
 /*-----------------------------------------------------------------------
  * External Bus Controller (EBC) Setup
  *----------------------------------------------------------------------*/
+#if defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
+/* booting from NAND, so NAND chips select has to be on CS 0 */
+#define CFG_NAND_CS		0		/* NAND chip connected to CSx	*/
+
+/* Memory Bank 1 (NOR-FLASH) initialization					*/
+#define CFG_EBC_PB1AP		0x05806500
+#define CFG_EBC_PB1CR           0xFC0DA000  /* BAS=0xFC0,BS=64MB,BU=R/W,BW=16bit*/
+
+/* Memory Bank 0 (NAND-FLASH) initialization					*/
+#define CFG_EBC_PB0AP		0x018003c0
+#define CFG_EBC_PB0CR		(CFG_NAND_ADDR | 0x1e000)
+#else
 #define CFG_NAND_CS		1		/* NAND chip connected to CSx	*/
 
 /* Memory Bank 0 (NOR-FLASH) initialization					*/
@@ -341,6 +418,7 @@
 /* Memory Bank 1 (NAND-FLASH) initialization					*/
 #define CFG_EBC_PB1AP		0x018003c0
 #define CFG_EBC_PB1CR		(CFG_NAND_ADDR | 0x1e000)
+#endif
 
 /* Memory Bank 2 (FPGA) initialization						*/
 #define CFG_EBC_PB2AP           0x9400C800
@@ -349,14 +427,6 @@
 #define CFG_EBC_CFG		0x7FC00000 /*  EBC0_CFG */
 
 /*-----------------------------------------------------------------------
- * NAND FLASH
- *----------------------------------------------------------------------*/
-#define CFG_MAX_NAND_DEVICE	1
-#define NAND_MAX_CHIPS		1
-#define CFG_NAND_BASE		(CFG_NAND_ADDR + CFG_NAND_CS)
-#define CFG_NAND_SELECT_DEVICE  1	/* nand driver supports mutipl. chips	*/
-
-/*-----------------------------------------------------------------------
  * GPIO Setup
  *----------------------------------------------------------------------*/
 /*-----------------------------------------------------------------------
diff --git a/nand_spl/board/amcc/kilauea/Makefile b/nand_spl/board/amcc/kilauea/Makefile
new file mode 100644
index 0000000..98f2775
--- /dev/null
+++ b/nand_spl/board/amcc/kilauea/Makefile
@@ -0,0 +1,108 @@
+#
+# (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 cache.o
+COBJS	= memory.o nand_boot.o nand_ecc.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)cache.S:
+	@rm -f $(obj)cache.S
+	ln -s $(SRCTREE)/cpu/ppc4xx/cache.S $(obj)cache.S
+
+$(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/kilauea/init.S $(obj)init.S
+
+$(obj)memory.c:
+	@rm -f $(obj)memory.c
+	ln -s $(SRCTREE)/board/amcc/kilauea/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 $(obj).depend
+
+#########################################################################
diff --git a/nand_spl/board/amcc/kilauea/config.mk b/nand_spl/board/amcc/kilauea/config.mk
new file mode 100644
index 0000000..2249091
--- /dev/null
+++ b/nand_spl/board/amcc/kilauea/config.mk
@@ -0,0 +1,47 @@
+#
+# (C) Copyright 2007
+# Stefan Roese, DENX Software Engineering, sr@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+#
+# AMCC 405EX Reference Platform (Kilauea) board
+#
+
+#
+# TEXT_BASE for SPL:
+#
+# On 4xx platforms the SPL is located at 0xfffff000...0xffffffff,
+# in the last 4kBytes of memory space in cache.
+# We will copy this SPL into instruction-cache in start.S. So we set
+# TEXT_BASE to starting address in i-cache here.
+#
+TEXT_BASE = 0x00800000
+
+# PAD_TO used to generate a 16kByte binary needed for the combined image
+# -> PAD_TO = TEXT_BASE + 0x4000
+PAD_TO	= 0x00804000
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif
+
+ifeq ($(dbcr),1)
+PLATFORM_CPPFLAGS += -DCFG_INIT_DBCR=0x8cff0000
+endif
diff --git a/nand_spl/board/amcc/kilauea/u-boot.lds b/nand_spl/board/amcc/kilauea/u-boot.lds
new file mode 100644
index 0000000..24df32d
--- /dev/null
+++ b/nand_spl/board/amcc/kilauea/u-boot.lds
@@ -0,0 +1,64 @@
+/*
+ * (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)
+    ndfc.o	(.text)
+
+    *(.text)
+    *(.fixup)
+  }
+  _etext = .;
+
+  .data    :
+  {
+    *(.rodata*)
+    *(.data*)
+    *(.sdata*)
+    __got2_start = .;
+    *(.got2)
+    __got2_end = .;
+  }
+
+  _edata  =  .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss)
+   *(.bss)
+  }
+
+  _end = . ;
+}