10 files changed, 117 insertions, 226 deletions

diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index c70eff69a1fb..6633b6e7505a 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 1771c804e02f..65551c9f8571 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 da062216948a..e45be73684ff 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 7ccff4884a23..5d84d1c74e4c 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 8c3c25f35578..5054c2ddd1a0 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 85a1cd8a8ff8..8062f8915250 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 019c17a75851..3e0edc6d2a20 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 df9234b3a5e0..bb8dc2de7969 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 44dc1923c0e3..ee3a4ea923ac 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 5d4742ed4aa2..95d86ce0421c 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)