diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/config.mk | 14 | ||||
| -rw-r--r-- | arch/i386/cpu/config.mk | 4 | ||||
| -rw-r--r-- | arch/i386/cpu/u-boot.lds | 104 |
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)); } +} |