Hi Simon,
On Sat, Feb 9, 2013 at 3:42 AM, Simon Glass sjg@chromium.org wrote:
This code is pretty old and we want to support only 32-bit systems now.
Signed-off-by: Simon Glass sjg@chromium.org
README | 5 - arch/x86/config.mk | 1 - arch/x86/cpu/u-boot.lds | 25 -- arch/x86/include/asm/realmode.h | 36 --- arch/x86/lib/Makefile | 10 - arch/x86/lib/bios.S | 569 ---------------------------------------- arch/x86/lib/bios.h | 3 - arch/x86/lib/bios_pci.S | 447 ------------------------------- arch/x86/lib/bios_setup.c | 179 ------------- arch/x86/lib/realmode.c | 93 ------- arch/x86/lib/realmode_switch.S | 232 ---------------- arch/x86/lib/video.c | 6 - arch/x86/lib/video_bios.c | 196 -------------- arch/x86/lib/zimage.c | 23 -- 14 files changed, 1825 deletions(-) delete mode 100644 arch/x86/include/asm/realmode.h delete mode 100644 arch/x86/lib/bios.S delete mode 100644 arch/x86/lib/bios_pci.S delete mode 100644 arch/x86/lib/bios_setup.c delete mode 100644 arch/x86/lib/realmode.c delete mode 100644 arch/x86/lib/realmode_switch.S delete mode 100644 arch/x86/lib/video_bios.c
diff --git a/README b/README index 2352e38..103036f 100644 --- a/README +++ b/README @@ -3820,11 +3820,6 @@ Low Level (hardware related) configuration options: If defined, the x86 reset vector code is excluded. You will need to do this when U-Boot is running from Coreboot.
-- CONFIG_X86_NO_REAL_MODE
If defined, x86 real mode code is omitted. This assumes a32-bit environment where such code is not needed. You willneed to do this when U-Boot is running from Coreboot.Freescale QE/FMAN Firmware Support:
diff --git a/arch/x86/config.mk b/arch/x86/config.mk index 23cacff..8356577 100644 --- a/arch/x86/config.mk +++ b/arch/x86/config.mk @@ -34,7 +34,6 @@ PF_CPPFLAGS_X86 := $(call cc-option, -ffreestanding) \ $(call cc-option, -mpreferred-stack-boundary=2) PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86) PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm -PLATFORM_CPPFLAGS += -DREALMODE_BASE=0x7c0
PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
diff --git a/arch/x86/cpu/u-boot.lds b/arch/x86/cpu/u-boot.lds index 0c6f0e3..8f5e444 100644 --- a/arch/x86/cpu/u-boot.lds +++ b/arch/x86/cpu/u-boot.lds @@ -73,29 +73,4 @@ SECTIONS /DISCARD/ : { *(.plt*) } /DISCARD/ : { *(.interp*) } /DISCARD/ : { *(.gnu*) }
/* 16bit realmode trampoline code */.realmode REALMODE_BASE : 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);-#ifndef CONFIG_X86_NO_RESET_VECTOR
/** The following expressions place the 16-bit Real-Mode code and* Reset Vector at the end of the Flash ROM*/. = START_16;.start16 : AT (CONFIG_SYS_TEXT_BASE + (CONFIG_SYS_MONITOR_LEN - RESET_SEG_SIZE + START_16)) { KEEP(*(.start16)); }. = RESET_VEC_LOC;.resetvec : AT (CONFIG_SYS_TEXT_BASE + (CONFIG_SYS_MONITOR_LEN - RESET_SEG_SIZE + RESET_VEC_LOC)) { KEEP(*(.resetvec)); }-#endif
Can we please keep the reset vector and real-to-protected mode code. I know coreboot does not need it (and hence it is dead code) but it keeps alive the thought that U-Boot can actually boot an x86 from power-up
Apart from that, I'll be glad to see the back of this legacy crap :)
Regards,
Graeme