x86: Align config.mk and linker scripts with other arches

3 files changed, 114 insertions, 8 deletions

diff --git a/arch/i386/config.mk b/arch/i386/config.mk
index 3fb97c1..fc6a313 100644
--- a/arch/i386/config.mk
+++ b/arch/i386/config.mk
@@ -21,8 +21,6 @@
 # MA 02111-1307 USA
 #
 
-CROSS_COMPILE ?= i386-linux-
-
 STANDALONE_LOAD_ADDR = 0x40000
 
 PLATFORM_CPPFLAGS += -fno-strict-aliasing
@@ -33,8 +31,12 @@ PLATFORM_CPPFLAGS += $(call cc-option, -ffreestanding)
 PLATFORM_CPPFLAGS += $(call cc-option, -fno-toplevel-reorder,  $(call cc-option, -fno-unit-at-a-time))
 PLATFORM_CPPFLAGS += $(call cc-option, -fno-stack-protector)
 PLATFORM_CPPFLAGS += $(call cc-option, -mpreferred-stack-boundary=2)
-PLATFORM_CPPFLAGS += -DCONFIG_I386 -D__I386__
+PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
+
+PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
+
+PLATFORM_LDFLAGS += --emit-relocs -Bsymbolic -Bsymbolic-functions
+
+LDFLAGS_u-boot += --gc-sections -pie
+LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds
 
-LDFLAGS += --cref
-LDFLAGS_u-boot += --gc-sections
-PLATFORM_RELFLAGS += -ffunction-sections
diff --git a/arch/i386/cpu/config.mk b/arch/i386/cpu/config.mk
index 16a160d..ec1d102 100644
--- a/arch/i386/cpu/config.mk
+++ b/arch/i386/cpu/config.mk
@@ -21,6 +21,6 @@
 # MA 02111-1307 USA
 #
 
-PLATFORM_RELFLAGS +=
+CROSS_COMPILE ?= i386-linux-
 
-PLATFORM_CPPFLAGS += -march=i386 -Werror
+PLATFORM_CPPFLAGS += -DCONFIG_I386 -D__I386__ -march=i386 -Werror
diff --git a/arch/i386/cpu/u-boot.lds b/arch/i386/cpu/u-boot.lds
new file mode 100644
index 0000000..3eeb2a2
--- /dev/null
+++ b/arch/i386/cpu/u-boot.lds
@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2002
+ * Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
+ *
+ * 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_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+ENTRY(_start)
+
+SECTIONS
+{
+	. = CONFIG_SYS_TEXT_BASE;	/* Location of bootcode in flash */
+	__text_start = .;
+	.text  : { *(.text*); }
+
+	. = ALIGN(4);
+	__u_boot_cmd_start = .;
+	.u_boot_cmd : { *(.u_boot_cmd) }
+	. = ALIGN(4);
+	__u_boot_cmd_end = .;
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
+
+	. = ALIGN(4);
+	.data : { *(.data*) }
+
+	. = ALIGN(4);
+	.dynsym : { *(.dynsym*) }
+
+	. = ALIGN(4);
+	.hash : { *(.hash*) }
+
+	. = ALIGN(4);
+	.got : { *(.got*) }
+
+	. = ALIGN(4);
+	__data_end = .;
+
+	. = ALIGN(4);
+	__bss_start = ABSOLUTE(.);
+	.bss (NOLOAD) : { *(.bss) }
+	. = ALIGN(4);
+	__bss_end = ABSOLUTE(.);
+
+	. = ALIGN(4);
+	__rel_dyn_start = .;
+	.rel.dyn : { *(.rel.dyn) }
+	__rel_dyn_end = .;
+
+	/DISCARD/ : { *(.dynstr*) }
+	/DISCARD/ : { *(.dynamic*) }
+	/DISCARD/ : { *(.plt*) }
+	/DISCARD/ : { *(.interp*) }
+	/DISCARD/ : { *(.gnu*) }
+
+	/* 16bit realmode trampoline code */
+	.realmode 0x7c0 : AT ( LOADADDR(.rel.dyn) + SIZEOF(.rel.dyn) ) { KEEP(*(.realmode)) }
+
+	__realmode_start = LOADADDR(.realmode);
+	__realmode_size = SIZEOF(.realmode);
+
+	/* 16bit BIOS emulation code (just enough to boot Linux) */
+	.bios 0 : AT ( LOADADDR(.realmode) + SIZEOF(.realmode) ) { KEEP(*(.bios)) }
+
+	__bios_start = LOADADDR(.bios);
+	__bios_size = SIZEOF(.bios);
+
+	/* The load addresses below assumes that the flash
+	 * will be mapped so that 0x387f0000 == 0xffff0000
+	 * at reset time
+	 *
+	 * The fe00 and ff00 offsets of the start32 and start16
+	 * segments are arbitrary, the just have to be mapped
+	 * at reset and the code have to fit.
+	 * The fff0 offset of resetvec is important, however.
+	 */
+	. = 0xfffffe00;
+	.start32 : AT (CONFIG_SYS_TEXT_BASE + 0x3fe00) { KEEP(*(.start32)); }
+
+	. = 0xf800;
+	.start16 : AT (CONFIG_SYS_TEXT_BASE + 0x3f800) { KEEP(*(.start16)); }
+
+	. = 0xfff0;
+	.resetvec : AT (CONFIG_SYS_TEXT_BASE + 0x3fff0) { KEEP(*(.resetvec)); }
+}