Merge commit 'v2.6.35' into kbuild/kbuild

Conflicts:
	arch/powerpc/Makefile

7 files changed, 397 insertions, 0 deletions

diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile
index 4d97eef36b8d..8800cf090694 100644
--- a/arch/s390/boot/Makefile
+++ b/arch/s390/boot/Makefile
@@ -9,10 +9,18 @@ COMPILE_VERSION := __linux_compile_version_id__`hostname |  \
 EXTRA_CFLAGS  := -DCOMPILE_VERSION=$(COMPILE_VERSION) -gstabs -I.
 
 targets := image
+targets += bzImage
+subdir- := compressed
 
 $(obj)/image: vmlinux FORCE
         $(call if_changed,objcopy)
 
+$(obj)/bzImage: $(obj)/compressed/vmlinux FORCE
+        $(call if_changed,objcopy)
+
+$(obj)/compressed/vmlinux: FORCE
+        $(Q)$(MAKE) $(build)=$(obj)/compressed $@
+
 install: $(CONFIGURE) $(obj)/image
         sh -x  $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/image \
               System.map Kerntypes "$(INSTALL_PATH)"
diff --git a/arch/s390/boot/compressed/Makefile b/arch/s390/boot/compressed/Makefile
new file mode 100644
index 000000000000..1c999f726a58
--- /dev/null
+++ b/arch/s390/boot/compressed/Makefile
@@ -0,0 +1,63 @@
+#
+# linux/arch/s390/boot/compressed/Makefile
+#
+# create a compressed vmlinux image from the original vmlinux
+#
+
+BITS := $(if $(CONFIG_64BIT),64,31)
+
+targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
+           vmlinux.bin.lzma vmlinux.bin.lzo misc.o piggy.o sizes.h head$(BITS).o
+
+KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
+KBUILD_CFLAGS += $(cflags-y)
+KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
+KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
+
+GCOV_PROFILE := n
+
+OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o sclp.o ebcdic.o)
+OBJECTS += $(obj)/head$(BITS).o $(obj)/misc.o $(obj)/piggy.o
+
+LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
+$(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS)
+        $(call if_changed,ld)
+        @:
+
+sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\)$$/\#define SZ\2 0x\1/p'
+
+quiet_cmd_sizes = GEN $@
+      cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@
+
+$(obj)/sizes.h: vmlinux
+        $(call if_changed,sizes)
+
+AFLAGS_head$(BITS).o += -I$(obj)
+$(obj)/head$(BITS).o: $(obj)/sizes.h
+
+CFLAGS_misc.o += -I$(obj)
+$(obj)/misc.o: $(obj)/sizes.h
+
+OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
+$(obj)/vmlinux.bin: vmlinux
+        $(call if_changed,objcopy)
+
+vmlinux.bin.all-y := $(obj)/vmlinux.bin
+
+suffix-$(CONFIG_KERNEL_GZIP)  := gz
+suffix-$(CONFIG_KERNEL_BZIP2) := bz2
+suffix-$(CONFIG_KERNEL_LZMA)  := lzma
+suffix-$(CONFIG_KERNEL_LZO)  := lzo
+
+$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
+        $(call if_changed,gzip)
+$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y)
+        $(call if_changed,bzip2)
+$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
+        $(call if_changed,lzma)
+$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
+        $(call if_changed,lzo)
+
+LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)
+        $(call if_changed,ld)
diff --git a/arch/s390/boot/compressed/head31.S b/arch/s390/boot/compressed/head31.S
new file mode 100644
index 000000000000..2a5523a32bcc
--- /dev/null
+++ b/arch/s390/boot/compressed/head31.S
@@ -0,0 +1,51 @@
+/*
+ * Startup glue code to uncompress the kernel
+ *
+ * Copyright IBM Corp. 2010
+ *
+ *   Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#include <linux/init.h>
+#include <asm/asm-offsets.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+#include "sizes.h"
+
+__HEAD
+        .globl  startup_continue
+startup_continue:
+        basr    %r13,0                  # get base
+.LPG1:
+        # setup stack
+        l       %r15,.Lstack-.LPG1(%r13)
+        ahi     %r15,-96
+        l       %r1,.Ldecompress-.LPG1(%r13)
+        basr    %r14,%r1
+        # setup registers for memory mover & branch to target
+        lr      %r4,%r2
+        l       %r2,.Loffset-.LPG1(%r13)
+        la      %r4,0(%r2,%r4)
+        l       %r3,.Lmvsize-.LPG1(%r13)
+        lr      %r5,%r3
+        # move the memory mover someplace safe
+        la      %r1,0x200
+        mvc     0(mover_end-mover,%r1),mover-.LPG1(%r13)
+        # decompress image is started at 0x11000
+        lr      %r6,%r2
+        br      %r1
+mover:
+        mvcle   %r2,%r4,0
+        jo      mover
+        br      %r6
+mover_end:
+
+        .align  8
+.Lstack:
+        .long   0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
+.Ldecompress:
+        .long   decompress_kernel
+.Loffset:
+        .long   0x11000
+.Lmvsize:
+        .long   SZ__bss_start
diff --git a/arch/s390/boot/compressed/head64.S b/arch/s390/boot/compressed/head64.S
new file mode 100644
index 000000000000..2982cb140550
--- /dev/null
+++ b/arch/s390/boot/compressed/head64.S
@@ -0,0 +1,48 @@
+/*
+ * Startup glue code to uncompress the kernel
+ *
+ * Copyright IBM Corp. 2010
+ *
+ *   Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#include <linux/init.h>
+#include <asm/asm-offsets.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+#include "sizes.h"
+
+__HEAD
+        .globl  startup_continue
+startup_continue:
+        basr    %r13,0                  # get base
+.LPG1:
+        # setup stack
+        lg      %r15,.Lstack-.LPG1(%r13)
+        aghi    %r15,-160
+        brasl   %r14,decompress_kernel
+        # setup registers for memory mover & branch to target
+        lgr     %r4,%r2
+        lg      %r2,.Loffset-.LPG1(%r13)
+        la      %r4,0(%r2,%r4)
+        lg      %r3,.Lmvsize-.LPG1(%r13)
+        lgr     %r5,%r3
+        # move the memory mover someplace safe
+        la      %r1,0x200
+        mvc     0(mover_end-mover,%r1),mover-.LPG1(%r13)
+        # decompress image is started at 0x11000
+        lgr     %r6,%r2
+        br      %r1
+mover:
+        mvcle   %r2,%r4,0
+        jo      mover
+        br      %r6
+mover_end:
+
+        .align  8
+.Lstack:
+        .quad   0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
+.Loffset:
+        .quad   0x11000
+.Lmvsize:
+        .quad   SZ__bss_start
diff --git a/arch/s390/boot/compressed/misc.c b/arch/s390/boot/compressed/misc.c
new file mode 100644
index 000000000000..0851eb1e919e
--- /dev/null
+++ b/arch/s390/boot/compressed/misc.c
@@ -0,0 +1,162 @@
+/*
+ * Definitions and wrapper functions for kernel decompressor
+ *
+ * Copyright IBM Corp. 2010
+ *
+ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/ipl.h>
+#include "sizes.h"
+
+/*
+ * gzip declarations
+ */
+#define STATIC static
+
+#undef memset
+#undef memcpy
+#undef memmove
+#define memzero(s, n) memset((s), 0, (n))
+
+/* Symbols defined by linker scripts */
+extern char input_data[];
+extern int input_len;
+extern char _text, _end;
+extern char _bss, _ebss;
+
+static void error(char *m);
+
+static unsigned long free_mem_ptr;
+static unsigned long free_mem_end_ptr;
+
+#ifdef CONFIG_HAVE_KERNEL_BZIP2
+#define HEAP_SIZE       0x400000
+#else
+#define HEAP_SIZE       0x10000
+#endif
+
+#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
+
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
+extern _sclp_print_early(const char *);
+
+int puts(const char *s)
+{
+        _sclp_print_early(s);
+        return 0;
+}
+
+void *memset(void *s, int c, size_t n)
+{
+        char *xs;
+
+        if (c == 0)
+                return __builtin_memset(s, 0, n);
+
+        xs = (char *) s;
+        if (n > 0)
+                do {
+                        *xs++ = c;
+                } while (--n > 0);
+        return s;
+}
+
+void *memcpy(void *__dest, __const void *__src, size_t __n)
+{
+        return __builtin_memcpy(__dest, __src, __n);
+}
+
+void *memmove(void *__dest, __const void *__src, size_t __n)
+{
+        char *d;
+        const char *s;
+
+        if (__dest <= __src)
+                return __builtin_memcpy(__dest, __src, __n);
+        d = __dest + __n;
+        s = __src + __n;
+        while (__n--)
+                *--d = *--s;
+        return __dest;
+}
+
+static void error(char *x)
+{
+        unsigned long long psw = 0x000a0000deadbeefULL;
+
+        puts("\n\n");
+        puts(x);
+        puts("\n\n -- System halted");
+
+        asm volatile("lpsw %0" : : "Q" (psw));
+}
+
+/*
+ * Safe guard the ipl parameter block against a memory area that will be
+ * overwritten. The validity check for the ipl parameter block is complex
+ * (see cio_get_iplinfo and ipl_save_parameters) but if the pointer to
+ * the ipl parameter block intersects with the passed memory area we can
+ * safely assume that we can read from that memory. In that case just copy
+ * the memory to IPL_PARMBLOCK_ORIGIN even if there is no ipl parameter
+ * block.
+ */
+static void check_ipl_parmblock(void *start, unsigned long size)
+{
+        void *src, *dst;
+
+        src = (void *)(unsigned long) S390_lowcore.ipl_parmblock_ptr;
+        if (src + PAGE_SIZE <= start || src >= start + size)
+                return;
+        dst = (void *) IPL_PARMBLOCK_ORIGIN;
+        memmove(dst, src, PAGE_SIZE);
+        S390_lowcore.ipl_parmblock_ptr = IPL_PARMBLOCK_ORIGIN;
+}
+
+unsigned long decompress_kernel(void)
+{
+        unsigned long output_addr;
+        unsigned char *output;
+
+        check_ipl_parmblock((void *) 0, (unsigned long) output + SZ__bss_start);
+        memset(&_bss, 0, &_ebss - &_bss);
+        free_mem_ptr = (unsigned long)&_end;
+        free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
+        output = (unsigned char *) ((free_mem_end_ptr + 4095UL) & -4096UL);
+
+#ifdef CONFIG_BLK_DEV_INITRD
+        /*
+         * Move the initrd right behind the end of the decompressed
+         * kernel image.
+         */
+        if (INITRD_START && INITRD_SIZE &&
+            INITRD_START < (unsigned long) output + SZ__bss_start) {
+                check_ipl_parmblock(output + SZ__bss_start,
+                                    INITRD_START + INITRD_SIZE);
+                memmove(output + SZ__bss_start,
+                        (void *) INITRD_START, INITRD_SIZE);
+                INITRD_START = (unsigned long) output + SZ__bss_start;
+        }
+#endif
+
+        puts("Uncompressing Linux... ");
+        decompress(input_data, input_len, NULL, NULL, output, NULL, error);
+        puts("Ok, booting the kernel.\n");
+        return (unsigned long) output;
+}
+
diff --git a/arch/s390/boot/compressed/vmlinux.lds.S b/arch/s390/boot/compressed/vmlinux.lds.S
new file mode 100644
index 000000000000..d80f79d8dd9c
--- /dev/null
+++ b/arch/s390/boot/compressed/vmlinux.lds.S
@@ -0,0 +1,55 @@
+#include <asm-generic/vmlinux.lds.h>
+
+#ifdef CONFIG_64BIT
+OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
+OUTPUT_ARCH(s390:64-bit)
+#else
+OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
+OUTPUT_ARCH(s390)
+#endif
+
+ENTRY(startup)
+
+SECTIONS
+{
+        /* Be careful parts of head_64.S assume startup_32 is at
+         * address 0.
+         */
+        . = 0;
+        .head.text : {
+                _head = . ;
+                HEAD_TEXT
+                _ehead = . ;
+        }
+        .rodata.compressed : {
+                *(.rodata.compressed)
+        }
+        .text : {
+                _text = .;      /* Text */
+                *(.text)
+                *(.text.*)
+                _etext = . ;
+        }
+        .rodata : {
+                _rodata = . ;
+                *(.rodata)       /* read-only data */
+                *(.rodata.*)
+                _erodata = . ;
+        }
+        .data : {
+                _data = . ;
+                *(.data)
+                *(.data.*)
+                _edata = . ;
+        }
+        . = ALIGN(256);
+        .bss : {
+                _bss = . ;
+                *(.bss)
+                *(.bss.*)
+                *(COMMON)
+                . = ALIGN(8);   /* For convenience during zeroing */
+                _ebss = .;
+        }
+        _end = .;
+}
diff --git a/arch/s390/boot/compressed/vmlinux.scr b/arch/s390/boot/compressed/vmlinux.scr
new file mode 100644
index 000000000000..f02382ae5c48
--- /dev/null
+++ b/arch/s390/boot/compressed/vmlinux.scr
@@ -0,0 +1,10 @@
+SECTIONS
+{
+  .rodata.compressed : {
+        input_len = .;
+        LONG(input_data_end - input_data) input_data = .;
+        *(.data)
+        output_len = . - 4;
+        input_data_end = .;
+        }
+}