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authorwdenk <wdenk>2004-02-23 20:48:38 +0000
committerwdenk <wdenk>2004-02-23 20:48:38 +0000
commitcd0a9de68b03e5a54fd2a08f44be318e4397be01 (patch)
tree161762b51f26b604823009e2bcc1c7b3105c6361 /board/csb272
parent2d1a537d87727907bf4d888760cba4abc0b52ad3 (diff)
downloadu-boot-linaro-stable-cd0a9de68b03e5a54fd2a08f44be318e4397be01.tar.gz
* Patch by Laurent Mohin, 10 Feb 2004:
Fix buffer overflow in common/usb.c * Patch by Tolunay Orkun, 10 Feb 2004: Add support for Cogent CSB272 board * Code cleanup
Diffstat (limited to 'board/csb272')
-rw-r--r--board/csb272/Makefile51
-rw-r--r--board/csb272/config.mk36
-rw-r--r--board/csb272/csb272.c174
-rw-r--r--board/csb272/init.S216
-rw-r--r--board/csb272/u-boot.lds151
5 files changed, 628 insertions, 0 deletions
diff --git a/board/csb272/Makefile b/board/csb272/Makefile
new file mode 100644
index 000000000..926e06503
--- /dev/null
+++ b/board/csb272/Makefile
@@ -0,0 +1,51 @@
+#
+# (C) Copyright 2000-2004
+# 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
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = lib$(BOARD).a
+
+#OBJS = $(BOARD).o flash.o
+#OBJS = $(BOARD).o strataflash.o
+OBJS = $(BOARD).o
+
+SOBJS = init.o
+
+
+$(LIB): $(OBJS) $(SOBJS)
+ $(AR) crv $@ $^
+
+clean:
+ rm -f $(SOBJS) $(OBJS)
+
+distclean: clean
+ rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+.depend: Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/board/csb272/config.mk b/board/csb272/config.mk
new file mode 100644
index 000000000..4672f0817
--- /dev/null
+++ b/board/csb272/config.mk
@@ -0,0 +1,36 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2004
+# Tolunay Orkun, NextIO Inc., torkun@nextio.com.
+#
+# 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
+#
+
+#
+# Cogent CSB272 board
+#
+
+LDFLAGS += $(LINKER_UNDEFS)
+
+TEXT_BASE := 0xFFFC0000
+#TEXT_BASE := 0x00100000
+
+PLATFORM_RELFLAGS := $(PLATFORM_RELFLAGS)
diff --git a/board/csb272/csb272.c b/board/csb272/csb272.c
new file mode 100644
index 000000000..0604189be
--- /dev/null
+++ b/board/csb272/csb272.c
@@ -0,0 +1,174 @@
+/*
+ * (C) Copyright 2004
+ * Tolunay Orkun, Nextio Inc., torkun@nextio.com
+ *
+ * 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 <asm/u-boot.h>
+#include <asm/processor.h>
+#include <common.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <405gp_enet.h>
+
+/*
+ * Configuration data for AMIS FS6377-01 Programmable 3-PLL Clock Generator
+ *
+ * CLKA output => Epson LCD Controller
+ * CLKB output => Not Connected
+ * CLKC output => Ethernet
+ * CLKD output => UART external clock
+ *
+ * Note: these values are obtained from device after init by micromonitor
+*/
+uchar pll_fs6377_regs[16] = {
+ 0x28, 0xef, 0x53, 0x03, 0x4b, 0x80, 0x32, 0x80,
+ 0x94, 0x32, 0x80, 0xd4, 0x56, 0xf6, 0xf6, 0xe0 };
+
+/*
+ * pll_init: Initialize AMIS IC FS6377-01 PLL
+ *
+ * PLL supplies Epson LCD Clock, Ethernet Clock and UART external clock
+ *
+ */
+int pll_init(void)
+{
+ i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
+
+ return i2c_write(CFG_I2C_PLL_ADDR, 0, 1,
+ (uchar *) pll_fs6377_regs, sizeof(pll_fs6377_regs));
+}
+
+/*
+ * board_pre_init: do any preliminary board initialization
+ *
+ */
+int board_pre_init(void)
+{
+ /* initialize PLL so UART, LCD, Ethernet clocked at correctly */
+ (void) get_clocks();
+ pll_init();
+
+ /*-------------------------------------------------------------------------+
+ | Interrupt controller setup for the Walnut board.
+ | Note: IRQ 0-15 405GP internally generated; active high; level sensitive
+ | IRQ 16 405GP internally generated; active low; level sensitive
+ | IRQ 17-24 RESERVED
+ | IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive
+ | IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive
+ | IRQ 27 (EXT IRQ 2) Not Used
+ | IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
+ | IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
+ | IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
+ | IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
+ | Note for Walnut board:
+ | An interrupt taken for the FPGA (IRQ 25) indicates that either
+ | the Mouse, Keyboard, IRDA, or External Expansion caused the
+ | interrupt. The FPGA must be read to determine which device
+ | caused the interrupt. The default setting of the FPGA clears
+ |
+ +-------------------------------------------------------------------------*/
+
+ mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
+ mtdcr (uicer, 0x00000000); /* disable all ints */
+ mtdcr (uiccr, 0x00000000); /* set all to be non-critical */
+ mtdcr (uicpr, 0xFFFFFF83); /* set int polarities */
+ mtdcr (uictr, 0x10000000); /* set int trigger levels */
+ mtdcr (uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */
+ mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
+
+ mtebc (epcr, 0xa8400000); /* EBC always driven */
+
+ return 0; /* success */
+}
+
+/*
+ * checkboard: identify/verify the board we are running
+ *
+ * Remark: we just assume it is correct board here!
+ *
+ */
+int checkboard(void)
+{
+ printf("BOARD: Cogent CSB272\n");
+
+ return 0; /* success */
+}
+
+/*
+ * initram: Determine the size of mounted DRAM
+ *
+ * Size is determined by reading SDRAM configuration registers as
+ * configured by initialization code
+ *
+ */
+long initdram (int board_type)
+{
+ ulong tot_size;
+ ulong bank_size;
+ ulong tmp;
+
+ tot_size = 0;
+
+ mtdcr (memcfga, mem_mb0cf);
+ tmp = mfdcr (memcfgd);
+ if (tmp & 0x00000001) {
+ bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+ tot_size += bank_size;
+ }
+
+ mtdcr (memcfga, mem_mb1cf);
+ tmp = mfdcr (memcfgd);
+ if (tmp & 0x00000001) {
+ bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+ tot_size += bank_size;
+ }
+
+ mtdcr (memcfga, mem_mb2cf);
+ tmp = mfdcr (memcfgd);
+ if (tmp & 0x00000001) {
+ bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+ tot_size += bank_size;
+ }
+
+ mtdcr (memcfga, mem_mb3cf);
+ tmp = mfdcr (memcfgd);
+ if (tmp & 0x00000001) {
+ bank_size = 0x00400000 << ((tmp >> 17) & 0x7);
+ tot_size += bank_size;
+ }
+
+ return tot_size;
+}
+
+/*
+ * last_stage_init: final configurations (such as PHY etc)
+ *
+ */
+int last_stage_init(void)
+{
+ /* initialize the PHY */
+ miiphy_reset(CONFIG_PHY_ADDR);
+ miiphy_write(CONFIG_PHY_ADDR, PHY_BMCR,
+ PHY_BMCR_AUTON | PHY_BMCR_RST_NEG); /* AUTO neg */
+ miiphy_write(CONFIG_PHY_ADDR, PHY_FCSCR, 0x0d08); /* LEDs */
+
+ return 0; /* success */
+}
diff --git a/board/csb272/init.S b/board/csb272/init.S
new file mode 100644
index 000000000..e00ebf89c
--- /dev/null
+++ b/board/csb272/init.S
@@ -0,0 +1,216 @@
+/******************************************************************************
+ *
+ * This source code has been made available to you by IBM on an AS-IS
+ * basis. Anyone receiving this source is licensed under IBM
+ * copyrights to use it in any way he or she deems fit, including
+ * copying it, modifying it, compiling it, and redistributing it either
+ * with or without modifications. No license under IBM patents or
+ * patent applications is to be implied by the copyright license.
+ *
+ * Any user of this software should understand that IBM cannot provide
+ * technical support for this software and will not be responsible for
+ * any consequences resulting from the use of this software.
+ *
+ * Any person who transfers this source code or any derivative work
+ * must include the IBM copyright notice, this paragraph, and the
+ * preceding two paragraphs in the transferred software.
+ *
+ * COPYRIGHT I B M CORPORATION 1995
+ * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M
+ *
+ *****************************************************************************/
+#include <config.h>
+#include <ppc4xx.h>
+
+#define _LINUX_CONFIG_H 1 /* avoid reading Linux autoconf.h file */
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+#define LI32(reg,val) \
+ addis reg,0,val@h;\
+ ori reg,reg,val@l
+
+#define WDCR_EBC(reg,val) \
+ addi r4,0,reg;\
+ mtdcr ebccfga,r4;\
+ addis r4,0,val@h;\
+ ori r4,r4,val@l;\
+ mtdcr ebccfgd,r4
+
+#define WDCR_SDRAM(reg,val) \
+ addi r4,0,reg;\
+ mtdcr memcfga,r4;\
+ addis r4,0,val@h;\
+ ori r4,r4,val@l;\
+ mtdcr memcfgd,r4
+
+/******************************************************************************
+ * Function: ext_bus_cntlr_init
+ *
+ * Description: Configures EBC Controller and a few basic chip selects.
+ *
+ * CS0 is setup to get the Boot Flash out of the addresss range
+ * so that we may setup a stack. CS7 is setup so that we can
+ * access and reset the hardware watchdog.
+ *
+ * IMPORTANT: For pass1 this code must run from
+ * cache since you can not reliably change a peripheral banks
+ * timing register (pbxap) while running code from that bank.
+ * For ex., since we are running from ROM on bank 0, we can NOT
+ * execute the code that modifies bank 0 timings from ROM, so
+ * we run it from cache.
+ *
+ * Notes: Does NOT use the stack.
+ *****************************************************************************/
+ .section ".text"
+ .align 2
+ .globl ext_bus_cntlr_init
+ .type ext_bus_cntlr_init, @function
+ext_bus_cntlr_init:
+ mflr r0
+ /********************************************************************
+ * Prefetch entire ext_bus_cntrl_init function into the icache.
+ * This is necessary because we are going to change the same CS we
+ * are executing from. Otherwise a CPU lockup may occur.
+ *******************************************************************/
+ bl ..getAddr
+..getAddr:
+ mflr r3 /* get address of ..getAddr */
+
+ /* Calculate number of cache lines for this function */
+ addi r4, 0, (((.Lfe0 - ..getAddr) / CFG_CACHELINE_SIZE) + 2)
+ mtctr r4
+..ebcloop:
+ icbt r0, r3 /* prefetch cache line for addr in r3*/
+ addi r3, r3, CFG_CACHELINE_SIZE /* move to next cache line */
+ bdnz ..ebcloop /* continue for $CTR cache lines */
+
+ /********************************************************************
+ * Delay to ensure all accesses to ROM are complete before changing
+ * bank 0 timings. 200usec should be enough.
+ * 200,000,000 (cycles/sec) X .000200 (sec) = 0x9C40 cycles.
+ *******************************************************************/
+ addis r3, 0, 0x0
+ ori r3, r3, 0xA000 /* wait 200us from reset */
+ mtctr r3
+..spinlp:
+ bdnz ..spinlp /* spin loop */
+
+ /********************************************************************
+ * SETUP CPC0_CR0
+ *******************************************************************/
+ LI32(r4, 0x007000c0)
+ mtdcr cntrl0, r4
+
+ /********************************************************************
+ * Setup CPC0_CR1: Change PCIINT signal to PerWE
+ *******************************************************************/
+ mfdcr r4, cntrl1
+ ori r4, r4, 0x4000
+ mtdcr cntrl1, r4
+
+ /********************************************************************
+ * Setup External Bus Controller (EBC).
+ *******************************************************************/
+ WDCR_EBC(epcr, 0xd84c0000)
+ /********************************************************************
+ * Memory Bank 0 (Intel 28F128J3 Flash) initialization
+ *******************************************************************/
+ /*WDCR_EBC(pb0ap, 0x02869200)*/
+ WDCR_EBC(pb0ap, 0x07869200)
+ WDCR_EBC(pb0cr, 0xfe0bc000)
+ /********************************************************************
+ * Memory Bank 1 (Holtek HT6542B PS/2) initialization
+ *******************************************************************/
+ WDCR_EBC(pb1ap, 0x1f869200)
+ WDCR_EBC(pb1cr, 0xf0818000)
+ /********************************************************************
+ * Memory Bank 2 (Epson S1D13506) initialization
+ *******************************************************************/
+ WDCR_EBC(pb2ap, 0x05860300)
+ WDCR_EBC(pb2cr, 0xf045a000)
+ /********************************************************************
+ * Memory Bank 3 (Philips SJA1000 CAN Controllers) initialization
+ *******************************************************************/
+ WDCR_EBC(pb3ap, 0x0387d200)
+ WDCR_EBC(pb3cr, 0xf021c000)
+ /********************************************************************
+ * Memory Bank 4-7 (Unused) initialization
+ *******************************************************************/
+ WDCR_EBC(pb4ap, 0)
+ WDCR_EBC(pb4cr, 0)
+ WDCR_EBC(pb5ap, 0)
+ WDCR_EBC(pb5cr, 0)
+ WDCR_EBC(pb6ap, 0)
+ WDCR_EBC(pb6cr, 0)
+ WDCR_EBC(pb7ap, 0)
+ WDCR_EBC(pb7cr, 0)
+
+ /* We are all done */
+ mtlr r0 /* Restore link register */
+ blr /* Return to calling function */
+.Lfe0: .size ext_bus_cntlr_init,.Lfe0-ext_bus_cntlr_init
+/* end ext_bus_cntlr_init() */
+
+/******************************************************************************
+ * Function: sdram_init
+ *
+ * Description: Configures SDRAM memory banks.
+ *
+ * Notes: Does NOT use the stack.
+ *****************************************************************************/
+ .section ".text"
+ .align 2
+ .globl sdram_init
+ .type sdram_init, @function
+sdram_init:
+
+ /*
+ * Disable memory controller to allow
+ * values to be changed.
+ */
+ WDCR_SDRAM(mem_mcopt1, 0x00000000)
+
+ /*
+ * Configure Memory Banks
+ */
+ WDCR_SDRAM(mem_mb0cf, 0x00084001)
+ WDCR_SDRAM(mem_mb1cf, 0x00000000)
+ WDCR_SDRAM(mem_mb2cf, 0x00000000)
+ WDCR_SDRAM(mem_mb3cf, 0x00000000)
+
+ /*
+ * Set up SDTR1 (SDRAM Timing Register)
+ */
+ WDCR_SDRAM(mem_sdtr1, 0x00854009)
+
+ /*
+ * Set RTR (Refresh Timing Register)
+ */
+ WDCR_SDRAM(mem_rtr, 0x10000000)
+ /* WDCR_SDRAM(mem_rtr, 0x05f00000) */
+
+ /********************************************************************
+ * Delay to ensure 200usec have elapsed since reset. Assume worst
+ * case that the core is running 200Mhz:
+ * 200,000,000 (cycles/sec) X .000200 (sec) = 0x9C40 cycles
+ *******************************************************************/
+ addis r3, 0, 0x0000
+ ori r3, r3, 0xA000 /* Wait >200us from reset */
+ mtctr r3
+..spinlp2:
+ bdnz ..spinlp2 /* spin loop */
+
+ /********************************************************************
+ * Set memory controller options reg, MCOPT1.
+ *******************************************************************/
+ WDCR_SDRAM(mem_mcopt1,0x80800000)
+
+..sdri_done:
+ blr /* Return to calling function */
+.Lfe1: .size sdram_init,.Lfe1-sdram_init
+/* end sdram_init() */
diff --git a/board/csb272/u-boot.lds b/board/csb272/u-boot.lds
new file mode 100644
index 000000000..8dbc5927a
--- /dev/null
+++ b/board/csb272/u-boot.lds
@@ -0,0 +1,151 @@
+/*
+ * (C) Copyright 2000-2004
+ * 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);
+/* Do we need any of these for elf?
+ __DYNAMIC = 0; */
+SECTIONS
+{
+ .resetvec 0xFFFFFFFC :
+ {
+ *(.resetvec)
+ } = 0xffff
+
+ /* 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)
+ board/csb272/init.o (.text)
+ cpu/ppc4xx/kgdb.o (.text)
+ cpu/ppc4xx/traps.o (.text)
+ cpu/ppc4xx/interrupts.o (.text)
+ cpu/ppc4xx/serial.o (.text)
+ cpu/ppc4xx/cpu_init.o (.text)
+ cpu/ppc4xx/speed.o (.text)
+ cpu/ppc4xx/405gp_enet.o (.text)
+ common/dlmalloc.o (.text)
+ lib_generic/crc32.o (.text)
+
+ lib_ppc/extable.o (.text)
+ lib_ppc/board.o (.text)
+ lib_generic/zlib.o (.text)
+/* . = env_offset;*/
+/* common/environment.o(.text)*/
+
+ *(.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 = .);
+}