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-rw-r--r--arch/x86/boot/Makefile56
-rw-r--r--arch/x86/boot/compressed/Makefile22
-rw-r--r--arch/x86/boot/compressed/misc.c118
-rw-r--r--arch/x86/boot/header.S29
-rw-r--r--arch/x86/boot/memory.c39
-rw-r--r--arch/x86/boot/pm.c44
-rw-r--r--arch/x86/boot/pmjump.S1
-rw-r--r--arch/x86/boot/setup.ld3
-rw-r--r--arch/x86/boot/tools/build.c9
-rw-r--r--arch/x86/boot/video-vga.c22
10 files changed, 117 insertions, 226 deletions
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index c70eff69a1f..6633b6e7505 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -6,26 +6,24 @@
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
+# Changed by many, many contributors over the years.
#
# ROOT_DEV specifies the default root-device when making the image.
# This can be either FLOPPY, CURRENT, /dev/xxxx or empty, in which case
# the default of FLOPPY is used by 'build'.
-ROOT_DEV := CURRENT
+ROOT_DEV := CURRENT
# If you want to preset the SVGA mode, uncomment the next line and
# set SVGA_MODE to whatever number you want.
# Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode.
# The number is the same as you would ordinarily press at bootup.
-SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
+SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
-# If you want the RAM disk device, define this to be the size in blocks.
-
-#RAMDISK := -DRAMDISK=512
-
-targets := vmlinux.bin setup.bin setup.elf zImage bzImage
+targets := vmlinux.bin setup.bin setup.elf bzImage
+targets += fdimage fdimage144 fdimage288 image.iso mtools.conf
subdir- := compressed
setup-y += a20.o cmdline.o copy.o cpu.o cpucheck.o edd.o
@@ -59,6 +57,7 @@ $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
# How to compile the 16-bit code. Note we always compile for -march=i386,
# that way we can complain to the user if the CPU is insufficient.
KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
+ -DDISABLE_BRANCH_PROFILING \
-Wall -Wstrict-prototypes \
-march=i386 -mregparm=3 \
-include $(srctree)/$(src)/code16gcc.h \
@@ -68,20 +67,16 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \
$(call cc-option, -fno-unit-at-a-time)) \
$(call cc-option, -fno-stack-protector) \
$(call cc-option, -mpreferred-stack-boundary=2)
-KBUILD_CFLAGS += $(call cc-option,-m32)
+KBUILD_CFLAGS += $(call cc-option, -m32)
KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
-$(obj)/zImage: asflags-y := $(SVGA_MODE) $(RAMDISK)
-$(obj)/bzImage: ccflags-y := -D__BIG_KERNEL__
-$(obj)/bzImage: asflags-y := $(SVGA_MODE) $(RAMDISK) -D__BIG_KERNEL__
-$(obj)/bzImage: BUILDFLAGS := -b
+$(obj)/bzImage: asflags-y := $(SVGA_MODE)
quiet_cmd_image = BUILD $@
-cmd_image = $(obj)/tools/build $(BUILDFLAGS) $(obj)/setup.bin \
- $(obj)/vmlinux.bin $(ROOT_DEV) > $@
+cmd_image = $(obj)/tools/build $(obj)/setup.bin $(obj)/vmlinux.bin \
+ $(ROOT_DEV) > $@
-$(obj)/zImage $(obj)/bzImage: $(obj)/setup.bin \
- $(obj)/vmlinux.bin $(obj)/tools/build FORCE
+$(obj)/bzImage: $(obj)/setup.bin $(obj)/vmlinux.bin $(obj)/tools/build FORCE
$(call if_changed,image)
@echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
@@ -116,9 +111,11 @@ $(obj)/setup.bin: $(obj)/setup.elf FORCE
$(obj)/compressed/vmlinux: FORCE
$(Q)$(MAKE) $(build)=$(obj)/compressed $@
-# Set this if you want to pass append arguments to the zdisk/fdimage/isoimage kernel
+# Set this if you want to pass append arguments to the
+# bzdisk/fdimage/isoimage kernel
FDARGS =
-# Set this if you want an initrd included with the zdisk/fdimage/isoimage kernel
+# Set this if you want an initrd included with the
+# bzdisk/fdimage/isoimage kernel
FDINITRD =
image_cmdline = default linux $(FDARGS) $(if $(FDINITRD),initrd=initrd.img,)
@@ -127,7 +124,7 @@ $(obj)/mtools.conf: $(src)/mtools.conf.in
sed -e 's|@OBJ@|$(obj)|g' < $< > $@
# This requires write access to /dev/fd0
-zdisk: $(BOOTIMAGE) $(obj)/mtools.conf
+bzdisk: $(obj)/bzImage $(obj)/mtools.conf
MTOOLSRC=$(obj)/mtools.conf mformat a: ; sync
syslinux /dev/fd0 ; sync
echo '$(image_cmdline)' | \
@@ -135,10 +132,10 @@ zdisk: $(BOOTIMAGE) $(obj)/mtools.conf
if [ -f '$(FDINITRD)' ] ; then \
MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' a:initrd.img ; \
fi
- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) a:linux ; sync
+ MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage a:linux ; sync
# These require being root or having syslinux 2.02 or higher installed
-fdimage fdimage144: $(BOOTIMAGE) $(obj)/mtools.conf
+fdimage fdimage144: $(obj)/bzImage $(obj)/mtools.conf
dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=1440
MTOOLSRC=$(obj)/mtools.conf mformat v: ; sync
syslinux $(obj)/fdimage ; sync
@@ -147,9 +144,9 @@ fdimage fdimage144: $(BOOTIMAGE) $(obj)/mtools.conf
if [ -f '$(FDINITRD)' ] ; then \
MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' v:initrd.img ; \
fi
- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) v:linux ; sync
+ MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage v:linux ; sync
-fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf
+fdimage288: $(obj)/bzImage $(obj)/mtools.conf
dd if=/dev/zero of=$(obj)/fdimage bs=1024 count=2880
MTOOLSRC=$(obj)/mtools.conf mformat w: ; sync
syslinux $(obj)/fdimage ; sync
@@ -158,9 +155,9 @@ fdimage288: $(BOOTIMAGE) $(obj)/mtools.conf
if [ -f '$(FDINITRD)' ] ; then \
MTOOLSRC=$(obj)/mtools.conf mcopy '$(FDINITRD)' w:initrd.img ; \
fi
- MTOOLSRC=$(obj)/mtools.conf mcopy $(BOOTIMAGE) w:linux ; sync
+ MTOOLSRC=$(obj)/mtools.conf mcopy $(obj)/bzImage w:linux ; sync
-isoimage: $(BOOTIMAGE)
+isoimage: $(obj)/bzImage
-rm -rf $(obj)/isoimage
mkdir $(obj)/isoimage
for i in lib lib64 share end ; do \
@@ -170,7 +167,7 @@ isoimage: $(BOOTIMAGE)
fi ; \
if [ $$i = end ] ; then exit 1 ; fi ; \
done
- cp $(BOOTIMAGE) $(obj)/isoimage/linux
+ cp $(obj)/bzImage $(obj)/isoimage/linux
echo '$(image_cmdline)' > $(obj)/isoimage/isolinux.cfg
if [ -f '$(FDINITRD)' ] ; then \
cp '$(FDINITRD)' $(obj)/isoimage/initrd.img ; \
@@ -181,12 +178,13 @@ isoimage: $(BOOTIMAGE)
isohybrid $(obj)/image.iso 2>/dev/null || true
rm -rf $(obj)/isoimage
-zlilo: $(BOOTIMAGE)
+bzlilo: $(obj)/bzImage
if [ -f $(INSTALL_PATH)/vmlinuz ]; then mv $(INSTALL_PATH)/vmlinuz $(INSTALL_PATH)/vmlinuz.old; fi
if [ -f $(INSTALL_PATH)/System.map ]; then mv $(INSTALL_PATH)/System.map $(INSTALL_PATH)/System.old; fi
- cat $(BOOTIMAGE) > $(INSTALL_PATH)/vmlinuz
+ cat $(obj)/bzImage > $(INSTALL_PATH)/vmlinuz
cp System.map $(INSTALL_PATH)/
if [ -x /sbin/lilo ]; then /sbin/lilo; else /etc/lilo/install; fi
install:
- sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
+ sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(obj)/bzImage \
+ System.map "$(INSTALL_PATH)"
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 1771c804e02..65551c9f857 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -4,10 +4,11 @@
# create a compressed vmlinux image from the original vmlinux
#
-targets := vmlinux vmlinux.bin vmlinux.bin.gz head_$(BITS).o misc.o piggy.o
+targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma head_$(BITS).o misc.o piggy.o
KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
+KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
cflags-$(CONFIG_X86_64) := -mcmodel=small
KBUILD_CFLAGS += $(cflags-y)
KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
@@ -47,18 +48,35 @@ ifeq ($(CONFIG_X86_32),y)
ifdef CONFIG_RELOCATABLE
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
$(call if_changed,gzip)
+$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin.all FORCE
+ $(call if_changed,bzip2)
+$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin.all FORCE
+ $(call if_changed,lzma)
else
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,gzip)
+$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,bzip2)
+$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,lzma)
endif
LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
else
+
$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
$(call if_changed,gzip)
+$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,bzip2)
+$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
+ $(call if_changed,lzma)
LDFLAGS_piggy.o := -r --format binary --oformat elf64-x86-64 -T
endif
-$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
+suffix_$(CONFIG_KERNEL_GZIP) = gz
+suffix_$(CONFIG_KERNEL_BZIP2) = bz2
+suffix_$(CONFIG_KERNEL_LZMA) = lzma
+
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix_y) FORCE
$(call if_changed,ld)
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index da062216948..e45be73684f 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -116,71 +116,13 @@
/*
* gzip declarations
*/
-
-#define OF(args) args
#define STATIC static
#undef memset
#undef memcpy
#define memzero(s, n) memset((s), 0, (n))
-typedef unsigned char uch;
-typedef unsigned short ush;
-typedef unsigned long ulg;
-
-/*
- * Window size must be at least 32k, and a power of two.
- * We don't actually have a window just a huge output buffer,
- * so we report a 2G window size, as that should always be
- * larger than our output buffer:
- */
-#define WSIZE 0x80000000
-
-/* Input buffer: */
-static unsigned char *inbuf;
-
-/* Sliding window buffer (and final output buffer): */
-static unsigned char *window;
-
-/* Valid bytes in inbuf: */
-static unsigned insize;
-
-/* Index of next byte to be processed in inbuf: */
-static unsigned inptr;
-
-/* Bytes in output buffer: */
-static unsigned outcnt;
-
-/* gzip flag byte */
-#define ASCII_FLAG 0x01 /* bit 0 set: file probably ASCII text */
-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gz file */
-#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
-#define ORIG_NAM 0x08 /* bit 3 set: original file name present */
-#define COMMENT 0x10 /* bit 4 set: file comment present */
-#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
-#define RESERVED 0xC0 /* bit 6, 7: reserved */
-
-#define get_byte() (inptr < insize ? inbuf[inptr++] : fill_inbuf())
-
-/* Diagnostic functions */
-#ifdef DEBUG
-# define Assert(cond, msg) do { if (!(cond)) error(msg); } while (0)
-# define Trace(x) do { fprintf x; } while (0)
-# define Tracev(x) do { if (verbose) fprintf x ; } while (0)
-# define Tracevv(x) do { if (verbose > 1) fprintf x ; } while (0)
-# define Tracec(c, x) do { if (verbose && (c)) fprintf x ; } while (0)
-# define Tracecv(c, x) do { if (verbose > 1 && (c)) fprintf x ; } while (0)
-#else
-# define Assert(cond, msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c, x)
-# define Tracecv(c, x)
-#endif
-static int fill_inbuf(void);
-static void flush_window(void);
static void error(char *m);
/*
@@ -189,13 +131,8 @@ static void error(char *m);
static struct boot_params *real_mode; /* Pointer to real-mode data */
static int quiet;
-extern unsigned char input_data[];
-extern int input_len;
-
-static long bytes_out;
-
static void *memset(void *s, int c, unsigned n);
-static void *memcpy(void *dest, const void *src, unsigned n);
+void *memcpy(void *dest, const void *src, unsigned n);
static void __putstr(int, const char *);
#define putstr(__x) __putstr(0, __x)
@@ -213,7 +150,17 @@ static char *vidmem;
static int vidport;
static int lines, cols;
-#include "../../../../lib/inflate.c"
+#ifdef CONFIG_KERNEL_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
+
+#ifdef CONFIG_KERNEL_BZIP2
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZMA
+#include "../../../../lib/decompress_unlzma.c"
+#endif
static void scroll(void)
{
@@ -282,7 +229,7 @@ static void *memset(void *s, int c, unsigned n)
return s;
}
-static void *memcpy(void *dest, const void *src, unsigned n)
+void *memcpy(void *dest, const void *src, unsigned n)
{
int i;
const char *s = src;
@@ -293,38 +240,6 @@ static void *memcpy(void *dest, const void *src, unsigned n)
return dest;
}
-/* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
- * and at least one byte is really needed.
- */
-static int fill_inbuf(void)
-{
- error("ran out of input data");
- return 0;
-}
-
-/* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
- */
-static void flush_window(void)
-{
- /* With my window equal to my output buffer
- * I only need to compute the crc here.
- */
- unsigned long c = crc; /* temporary variable */
- unsigned n;
- unsigned char *in, ch;
-
- in = window;
- for (n = 0; n < outcnt; n++) {
- ch = *in++;
- c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
- }
- crc = c;
- bytes_out += (unsigned long)outcnt;
- outcnt = 0;
-}
static void error(char *x)
{
@@ -407,12 +322,8 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
lines = real_mode->screen_info.orig_video_lines;
cols = real_mode->screen_info.orig_video_cols;
- window = output; /* Output buffer (Normally at 1M) */
free_mem_ptr = heap; /* Heap */
free_mem_end_ptr = heap + BOOT_HEAP_SIZE;
- inbuf = input_data; /* Input buffer */
- insize = input_len;
- inptr = 0;
#ifdef CONFIG_X86_64
if ((unsigned long)output & (__KERNEL_ALIGN - 1))
@@ -430,10 +341,9 @@ asmlinkage void decompress_kernel(void *rmode, memptr heap,
#endif
#endif
- makecrc();
if (!quiet)
putstr("\nDecompressing Linux... ");
- gunzip();
+ decompress(input_data, input_len, NULL, NULL, output, NULL, error);
parse_elf(output);
if (!quiet)
putstr("done.\nBooting the kernel.\n");
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index 7ccff4884a2..5d84d1c74e4 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -24,12 +24,8 @@
#include "boot.h"
#include "offsets.h"
-SETUPSECTS = 4 /* default nr of setup-sectors */
BOOTSEG = 0x07C0 /* original address of boot-sector */
-SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
-SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
- /* to be loaded */
-ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
+SYSSEG = 0x1000 /* historical load address >> 4 */
#ifndef SVGA_MODE
#define SVGA_MODE ASK_VGA
@@ -97,12 +93,12 @@ bugger_off_msg:
.section ".header", "a"
.globl hdr
hdr:
-setup_sects: .byte SETUPSECTS
+setup_sects: .byte 0 /* Filled in by build.c */
root_flags: .word ROOT_RDONLY
-syssize: .long SYSSIZE
-ram_size: .word RAMDISK
+syssize: .long 0 /* Filled in by build.c */
+ram_size: .word 0 /* Obsolete */
vid_mode: .word SVGA_MODE
-root_dev: .word ROOT_DEV
+root_dev: .word 0 /* Filled in by build.c */
boot_flag: .word 0xAA55
# offset 512, entry point
@@ -123,14 +119,15 @@ _start:
# or else old loadlin-1.5 will fail)
.globl realmode_swtch
realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
-start_sys_seg: .word SYSSEG
+start_sys_seg: .word SYSSEG # obsolete and meaningless, but just
+ # in case something decided to "use" it
.word kernel_version-512 # pointing to kernel version string
# above section of header is compatible
# with loadlin-1.5 (header v1.5). Don't
# change it.
-type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin,
- # Bootlin, SYSLX, bootsect...)
+type_of_loader: .byte 0 # 0 means ancient bootloader, newer
+ # bootloaders know to change this.
# See Documentation/i386/boot.txt for
# assigned ids
@@ -142,11 +139,7 @@ CAN_USE_HEAP = 0x80 # If set, the loader also has set
# space behind setup.S can be used for
# heap purposes.
# Only the loader knows what is free
-#ifndef __BIG_KERNEL__
- .byte 0
-#else
.byte LOADED_HIGH
-#endif
setup_move_size: .word 0x8000 # size to move, when setup is not
# loaded at 0x90000. We will move setup
@@ -157,11 +150,7 @@ setup_move_size: .word 0x8000 # size to move, when setup is not
code32_start: # here loaders can put a different
# start address for 32-bit code.
-#ifndef __BIG_KERNEL__
- .long 0x1000 # 0x1000 = default for zImage
-#else
.long 0x100000 # 0x100000 = default for big kernel
-#endif
ramdisk_image: .long 0 # address of loaded ramdisk image
# Here the loader puts the 32-bit
diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c
index 8c3c25f3557..5054c2ddd1a 100644
--- a/arch/x86/boot/memory.c
+++ b/arch/x86/boot/memory.c
@@ -2,6 +2,7 @@
*
* Copyright (C) 1991, 1992 Linus Torvalds
* Copyright 2007 rPath, Inc. - All Rights Reserved
+ * Copyright 2009 Intel Corporation; author H. Peter Anvin
*
* This file is part of the Linux kernel, and is made available under
* the terms of the GNU General Public License version 2.
@@ -16,24 +17,38 @@
#define SMAP 0x534d4150 /* ASCII "SMAP" */
+struct e820_ext_entry {
+ struct e820entry std;
+ u32 ext_flags;
+} __attribute__((packed));
+
static int detect_memory_e820(void)
{
int count = 0;
u32 next = 0;
- u32 size, id;
+ u32 size, id, edi;
u8 err;
struct e820entry *desc = boot_params.e820_map;
+ static struct e820_ext_entry buf; /* static so it is zeroed */
+
+ /*
+ * Set this here so that if the BIOS doesn't change this field
+ * but still doesn't change %ecx, we're still okay...
+ */
+ buf.ext_flags = 1;
do {
- size = sizeof(struct e820entry);
+ size = sizeof buf;
- /* Important: %edx is clobbered by some BIOSes,
- so it must be either used for the error output
- or explicitly marked clobbered. */
- asm("int $0x15; setc %0"
+ /* Important: %edx and %esi are clobbered by some BIOSes,
+ so they must be either used for the error output
+ or explicitly marked clobbered. Given that, assume there
+ is something out there clobbering %ebp and %edi, too. */
+ asm("pushl %%ebp; int $0x15; popl %%ebp; setc %0"
: "=d" (err), "+b" (next), "=a" (id), "+c" (size),
- "=m" (*desc)
- : "D" (desc), "d" (SMAP), "a" (0xe820));
+ "=D" (edi), "+m" (buf)
+ : "D" (&buf), "d" (SMAP), "a" (0xe820)
+ : "esi");
/* BIOSes which terminate the chain with CF = 1 as opposed
to %ebx = 0 don't always report the SMAP signature on
@@ -51,8 +66,14 @@ static int detect_memory_e820(void)
break;
}
+ /* ACPI 3.0 added the extended flags support. If bit 0
+ in the extended flags is zero, we're supposed to simply
+ ignore the entry -- a backwards incompatible change! */
+ if (size > 20 && !(buf.ext_flags & 1))
+ continue;
+
+ *desc++ = buf.std;
count++;
- desc++;
} while (next && count < ARRAY_SIZE(boot_params.e820_map));
return boot_params.e820_entries = count;
diff --git a/arch/x86/boot/pm.c b/arch/x86/boot/pm.c
index 85a1cd8a8ff..8062f891525 100644
--- a/arch/x86/boot/pm.c
+++ b/arch/x86/boot/pm.c
@@ -33,47 +33,6 @@ static void realmode_switch_hook(void)
}
/*
- * A zImage kernel is loaded at 0x10000 but wants to run at 0x1000.
- * A bzImage kernel is loaded and runs at 0x100000.
- */
-static void move_kernel_around(void)
-{
- /* Note: rely on the compile-time option here rather than
- the LOADED_HIGH flag. The Qemu kernel loader unconditionally
- sets the loadflags to zero. */
-#ifndef __BIG_KERNEL__
- u16 dst_seg, src_seg;
- u32 syssize;
-
- dst_seg = 0x1000 >> 4;
- src_seg = 0x10000 >> 4;
- syssize = boot_params.hdr.syssize; /* Size in 16-byte paragraphs */
-
- while (syssize) {
- int paras = (syssize >= 0x1000) ? 0x1000 : syssize;
- int dwords = paras << 2;
-
- asm volatile("pushw %%es ; "
- "pushw %%ds ; "
- "movw %1,%%es ; "
- "movw %2,%%ds ; "
- "xorw %%di,%%di ; "
- "xorw %%si,%%si ; "
- "rep;movsl ; "
- "popw %%ds ; "
- "popw %%es"
- : "+c" (dwords)
- : "r" (dst_seg), "r" (src_seg)
- : "esi", "edi");
-
- syssize -= paras;
- dst_seg += paras;
- src_seg += paras;
- }
-#endif
-}
-
-/*
* Disable all interrupts at the legacy PIC.
*/
static void mask_all_interrupts(void)
@@ -147,9 +106,6 @@ void go_to_protected_mode(void)
/* Hook before leaving real mode, also disables interrupts */
realmode_switch_hook();
- /* Move the kernel/setup to their final resting places */
- move_kernel_around();
-
/* Enable the A20 gate */
if (enable_a20()) {
puts("A20 gate not responding, unable to boot...\n");
diff --git a/arch/x86/boot/pmjump.S b/arch/x86/boot/pmjump.S
index 019c17a7585..3e0edc6d2a2 100644
--- a/arch/x86/boot/pmjump.S
+++ b/arch/x86/boot/pmjump.S
@@ -47,6 +47,7 @@ GLOBAL(protected_mode_jump)
ENDPROC(protected_mode_jump)
.code32
+ .section ".text32","ax"
GLOBAL(in_pm32)
# Set up data segments for flat 32-bit mode
movl %ecx, %ds
diff --git a/arch/x86/boot/setup.ld b/arch/x86/boot/setup.ld
index df9234b3a5e..bb8dc2de796 100644
--- a/arch/x86/boot/setup.ld
+++ b/arch/x86/boot/setup.ld
@@ -17,7 +17,8 @@ SECTIONS
.header : { *(.header) }
.inittext : { *(.inittext) }
.initdata : { *(.initdata) }
- .text : { *(.text*) }
+ .text : { *(.text) }
+ .text32 : { *(.text32) }
. = ALIGN(16);
.rodata : { *(.rodata*) }
diff --git a/arch/x86/boot/tools/build.c b/arch/x86/boot/tools/build.c
index 44dc1923c0e..ee3a4ea923a 100644
--- a/arch/x86/boot/tools/build.c
+++ b/arch/x86/boot/tools/build.c
@@ -130,7 +130,7 @@ static void die(const char * str, ...)
static void usage(void)
{
- die("Usage: build [-b] setup system [rootdev] [> image]");
+ die("Usage: build setup system [rootdev] [> image]");
}
int main(int argc, char ** argv)
@@ -145,11 +145,6 @@ int main(int argc, char ** argv)
void *kernel;
u32 crc = 0xffffffffUL;
- if (argc > 2 && !strcmp(argv[1], "-b"))
- {
- is_big_kernel = 1;
- argc--, argv++;
- }
if ((argc < 3) || (argc > 4))
usage();
if (argc > 3) {
@@ -216,8 +211,6 @@ int main(int argc, char ** argv)
die("Unable to mmap '%s': %m", argv[2]);
/* Number of 16-byte paragraphs, including space for a 4-byte CRC */
sys_size = (sz + 15 + 4) / 16;
- if (!is_big_kernel && sys_size > DEF_SYSSIZE)
- die("System is too big. Try using bzImage or modules.");
/* Patch the setup code with the appropriate size parameters */
buf[0x1f1] = setup_sectors-1;
diff --git a/arch/x86/boot/video-vga.c b/arch/x86/boot/video-vga.c
index 5d4742ed4aa..95d86ce0421 100644
--- a/arch/x86/boot/video-vga.c
+++ b/arch/x86/boot/video-vga.c
@@ -129,41 +129,45 @@ u16 vga_crtc(void)
return (inb(0x3cc) & 1) ? 0x3d4 : 0x3b4;
}
-static void vga_set_480_scanlines(int end)
+static void vga_set_480_scanlines(int lines)
{
- u16 crtc;
- u8 csel;
+ u16 crtc; /* CRTC base address */
+ u8 csel; /* CRTC miscellaneous output register */
+ u8 ovfw; /* CRTC overflow register */
+ int end = lines-1;
crtc = vga_crtc();
+ ovfw = 0x3c | ((end >> (8-1)) & 0x02) | ((end >> (9-6)) & 0x40);
+
out_idx(0x0c, crtc, 0x11); /* Vertical sync end, unlock CR0-7 */
out_idx(0x0b, crtc, 0x06); /* Vertical total */
- out_idx(0x3e, crtc, 0x07); /* Vertical overflow */
+ out_idx(ovfw, crtc, 0x07); /* Vertical overflow */
out_idx(0xea, crtc, 0x10); /* Vertical sync start */
- out_idx(end, crtc, 0x12); /* Vertical display end */
+ out_idx(end, crtc, 0x12); /* Vertical display end */
out_idx(0xe7, crtc, 0x15); /* Vertical blank start */
out_idx(0x04, crtc, 0x16); /* Vertical blank end */
csel = inb(0x3cc);
csel &= 0x0d;
csel |= 0xe2;
- outb(csel, 0x3cc);
+ outb(csel, 0x3c2);
}
static void vga_set_80x30(void)
{
- vga_set_480_scanlines(0xdf);
+ vga_set_480_scanlines(30*16);
}
static void vga_set_80x34(void)
{
vga_set_14font();
- vga_set_480_scanlines(0xdb);
+ vga_set_480_scanlines(34*14);
}
static void vga_set_80x60(void)
{
vga_set_8font();
- vga_set_480_scanlines(0xdf);
+ vga_set_480_scanlines(60*8);
}
static int vga_set_mode(struct mode_info *mode)
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2025-01-05 17:56:35 +0000