From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Add the "bzImage" compile target and the necessary code to generate
compressed kernel images. The old style uncompressed "image" target
is preserved, a simple make will build them both.
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
---
arch/s390/Kconfig | 3
arch/s390/Makefile | 13 ++
arch/s390/boot/Makefile | 8 +
arch/s390/boot/compressed/Makefile | 60 ++++++++++++
arch/s390/boot/compressed/head31.S | 51 ++++++++++
arch/s390/boot/compressed/head64.S | 48 +++++++++
arch/s390/boot/compressed/misc.c | 158 ++++++++++++++++++++++++++++++++
arch/s390/boot/compressed/vmlinux.lds.S | 55 +++++++++++
arch/s390/boot/compressed/vmlinux.scr | 10 ++
arch/s390/defconfig | 7 +
arch/s390/kernel/Makefile | 1
arch/s390/kernel/head.S | 41 ++++----
arch/s390/kernel/head31.S | 16 ++-
arch/s390/kernel/head64.S | 24 ++--
arch/s390/kernel/sclp.S | 36 ++++++-
15 files changed, 488 insertions(+), 43 deletions(-)
Index: quilt-2.6/arch/s390/boot/compressed/head31.S
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ quilt-2.6/arch/s390/boot/compressed/head31.S 2010-02-24 09:44:28.000000000 +0100
@@ -0,0 +1,51 @@
+/*
+ * Startup glue code to uncompress the kernel
+ *
+ * Copyright IBM Corp. 2010
+ *
+ * Author(s): Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
+ */
+
+#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
Index: quilt-2.6/arch/s390/boot/compressed/head64.S
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ quilt-2.6/arch/s390/boot/compressed/head64.S 2010-02-24 09:44:28.000000000 +0100
@@ -0,0 +1,48 @@
+/*
+ * Startup glue code to uncompress the kernel
+ *
+ * Copyright IBM Corp. 2010
+ *
+ * Author(s): Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
+ */
+
+#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
Index: quilt-2.6/arch/s390/boot/compressed/Makefile
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ quilt-2.6/arch/s390/boot/compressed/Makefile 2010-02-24 09:44:28.000000000 +0100
@@ -0,0 +1,60 @@
+#
+# linux/arch/s390/boot/compressed/Makefile
+#
+# create a compressed vmlinux image from the original vmlinux
+#
+
+BITS := $(if $(CONFIG_64BIT),64,31)
+
+targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
+ vmlinux.bin.lzma misc.o piggy.o sizes.h head$(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
+
+$(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)
+
+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)
Index: quilt-2.6/arch/s390/boot/compressed/misc.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ quilt-2.6/arch/s390/boot/compressed/misc.c 2010-02-24 09:44:28.000000000 +0100
@@ -0,0 +1,158 @@
+/*
+ * Definitions and wrapper functions for kernel decompressor
+ *
+ * Copyright IBM Corp. 2010
+ *
+ * Author(s): Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
+ */
+
+#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 int _text;
+extern int _end;
+
+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
+
+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;
+
+ free_mem_ptr = (unsigned long)&_end;
+ free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
+ output = (unsigned char *) ((free_mem_end_ptr + 4095UL) & -4096UL);
+
+ check_ipl_parmblock((void *) 0, (unsigned long) output + SZ__bss_start);
+
+#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;
+}
+
Index: quilt-2.6/arch/s390/boot/compressed/vmlinux.lds.S
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ quilt-2.6/arch/s390/boot/compressed/vmlinux.lds.S 2010-02-24 09:44:28.000000000 +0100
@@ -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 = .;
+}
Index: quilt-2.6/arch/s390/boot/compressed/vmlinux.scr
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ quilt-2.6/arch/s390/boot/compressed/vmlinux.scr 2010-02-24 09:44:28.000000000 +0100
@@ -0,0 +1,10 @@
+SECTIONS
+{
+ .rodata.compressed : {
+ input_len = .;
+ LONG(input_data_end - input_data) input_data = .;
+ *(.data)
+ output_len = . - 4;
+ input_data_end = .;
+ }
+}
Index: quilt-2.6/arch/s390/boot/Makefile
===================================================================
--- quilt-2.6.orig/arch/s390/boot/Makefile 2010-02-24 09:28:13.000000000 +0100
+++ quilt-2.6/arch/s390/boot/Makefile 2010-02-24 09:44:28.000000000 +0100
@@ -9,10 +9,18 @@
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)"
Index: quilt-2.6/arch/s390/defconfig
===================================================================
--- quilt-2.6.orig/arch/s390/defconfig 2010-02-24 09:28:13.000000000 +0100
+++ quilt-2.6/arch/s390/defconfig 2010-02-24 09:44:28.000000000 +0100
@@ -36,6 +36,13 @@
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
+CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_BZIP2=y
+CONFIG_HAVE_KERNEL_LZMA=y
+CONFIG_KERNEL_GZIP=y
+# CONFIG_KERNEL_BZIP2 is not set
+# CONFIG_KERNEL_LZMA is not set
+# CONFIG_KERNEL_LZO is not set
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
Index: quilt-2.6/arch/s390/Kconfig
===================================================================
--- quilt-2.6.orig/arch/s390/Kconfig 2010-02-24 09:44:27.000000000 +0100
+++ quilt-2.6/arch/s390/Kconfig 2010-02-24 09:44:28.000000000 +0100
@@ -98,6 +98,9 @@
select HAVE_ARCH_TRACEHOOK
select INIT_ALL_POSSIBLE
select HAVE_PERF_EVENTS
+ select HAVE_KERNEL_GZIP
+ select HAVE_KERNEL_BZIP2
+ select HAVE_KERNEL_LZMA
select ARCH_INLINE_SPIN_TRYLOCK
select ARCH_INLINE_SPIN_TRYLOCK_BH
select ARCH_INLINE_SPIN_LOCK
Index: quilt-2.6/arch/s390/kernel/head31.S
===================================================================
--- quilt-2.6.orig/arch/s390/kernel/head31.S 2010-02-24 09:28:13.000000000 +0100
+++ quilt-2.6/arch/s390/kernel/head31.S 2010-02-24 09:44:28.000000000 +0100
@@ -1,7 +1,7 @@
/*
* arch/s390/kernel/head31.S
*
- * Copyright (C) IBM Corp. 2005,2006
+ * Copyright (C) IBM Corp. 2005,2010
*
* Author(s): Hartmut Penner <hp@xxxxxxxxxx>
* Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
@@ -10,13 +10,19 @@
*
*/
- .org 0x11000
+#include <linux/init.h>
+#include <asm/asm-offsets.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+__HEAD
+ .globl startup_continue
startup_continue:
basr %r13,0 # get base
.LPG1:
- mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
+ l %r1,.Lbase_cc-.LPG1(%r13)
+ mvc 0(8,%r1),__LC_LAST_UPDATE_CLOCK
lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
# move IPL device to lowcore
@@ -69,10 +75,12 @@
.Lduald:.rept 8
.long 0x80000000,0,0,0 # invalid access-list entries
.endr
+.Lbase_cc:
+ .long sched_clock_base_cc
- .org 0x12000
.globl _ehead
_ehead:
+
#ifdef CONFIG_SHARED_KERNEL
.org 0x100000
#endif
Index: quilt-2.6/arch/s390/kernel/head64.S
===================================================================
--- quilt-2.6.orig/arch/s390/kernel/head64.S 2010-02-24 09:44:24.000000000 +0100
+++ quilt-2.6/arch/s390/kernel/head64.S 2010-02-24 09:44:28.000000000 +0100
@@ -1,7 +1,7 @@
/*
* arch/s390/kernel/head64.S
*
- * Copyright (C) IBM Corp. 1999,2006
+ * Copyright (C) IBM Corp. 1999,2010
*
* Author(s): Hartmut Penner <hp@xxxxxxxxxx>
* Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
@@ -10,18 +10,17 @@
*
*/
- .org 0x11000
+#include <linux/init.h>
+#include <asm/asm-offsets.h>
+#include <asm/thread_info.h>
+#include <asm/page.h>
+__HEAD
+ .globl startup_continue
startup_continue:
- basr %r13,0 # get base
-.LPG1: sll %r13,1 # remove high order bit
- srl %r13,1
- mvi __LC_AR_MODE_ID,1 # set esame flag
- slr %r0,%r0 # set cpuid to zero
- lhi %r1,2 # mode 2 = esame (dump)
- sigp %r1,%r0,0x12 # switch to esame mode
- sam64 # switch to 64 bit mode
- llgfr %r13,%r13 # clear high-order half of base reg
+ larl %r1,sched_clock_base_cc
+ mvc 0(8,%r1),__LC_LAST_UPDATE_CLOCK
+ larl %r13,.LPG1 # get base
lmh %r0,%r15,.Lzero64-.LPG1(%r13) # clear high-order half
lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
lg %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
@@ -46,6 +45,7 @@
lpswe .Lentry-.LPG1(13) # jump to _stext in primary-space,
# virtual and never return ...
.align 16
+.LPG1:
.Lentry:.quad 0x0000000180000000,_stext
.Lctl: .quad 0x04350002 # cr0: various things
.quad 0 # cr1: primary space segment table
@@ -78,9 +78,9 @@
.long 0x80000000,0,0,0 # invalid access-list entries
.endr
- .org 0x12000
.globl _ehead
_ehead:
+
#ifdef CONFIG_SHARED_KERNEL
.org 0x100000
#endif
Index: quilt-2.6/arch/s390/kernel/head.S
===================================================================
--- quilt-2.6.orig/arch/s390/kernel/head.S 2010-02-24 09:44:28.000000000 +0100
+++ quilt-2.6/arch/s390/kernel/head.S 2010-02-24 09:44:28.000000000 +0100
@@ -1,5 +1,5 @@
/*
- * Copyright IBM Corp. 1999,2009
+ * Copyright IBM Corp. 1999,2010
*
* Author(s): Hartmut Penner <hp@xxxxxxxxxx>
* Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
@@ -22,11 +22,9 @@
*/
#include <linux/init.h>
-#include <asm/setup.h>
#include <asm/asm-offsets.h>
#include <asm/thread_info.h>
#include <asm/page.h>
-#include <asm/cpu.h>
#ifdef CONFIG_64BIT
#define ARCH_OFFSET 4
@@ -450,16 +448,15 @@
# or linload or SALIPL
#
.org 0x10000
-startup:basr %r13,0 # get base
+ .globl startup
+startup:
+ basr %r13,0 # get base
.LPG0:
xc 0x200(256),0x200 # partially clear lowcore
xc 0x300(256),0x300
- l %r1,5f-.LPG0(%r13)
- stck 0(%r1)
- spt 6f-.LPG0(%r13)
- mvc __LC_LAST_UPDATE_CLOCK(8),0(%r1)
- mvc __LC_LAST_UPDATE_TIMER(8),6f-.LPG0(%r13)
- mvc __LC_EXIT_TIMER(8),5f-.LPG0(%r13)
+ stck __LC_LAST_UPDATE_CLOCK
+ spt 5f-.LPG0(%r13)
+ mvc __LC_LAST_UPDATE_TIMER(8),5f-.LPG0(%r13)
#ifndef CONFIG_MARCH_G5
# check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10}
xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST
@@ -477,7 +474,6 @@
cl %r0,2f+12-.LPG0(%r13)
je 3f
1: l %r15,.Lstack-.LPG0(%r13)
- ahi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE
ahi %r15,-96
la %r2,.Lals_string-.LPG0(%r13)
l %r3,.Lsclp_print-.LPG0(%r13)
@@ -488,7 +484,7 @@
.Lsclp_print:
.long _sclp_print_early
.Lstack:
- .long init_thread_union
+ .long 0x8000 + (1<<(PAGE_SHIFT+THREAD_ORDER))
.align 16
2: .long 0x000a0000,0x8badcccc
#if defined(CONFIG_64BIT)
@@ -515,13 +511,22 @@
3:
#endif
+#ifdef CONFIG_64BIT
+ mvi __LC_AR_MODE_ID,1 # set esame flag
+ slr %r0,%r0 # set cpuid to zero
+ lhi %r1,2 # mode 2 = esame (dump)
+ sigp %r1,%r0,0x12 # switch to esame mode
+ sam64 # switch to 64 bit mode
+ jg startup_continue
+#else
+ mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
l %r13,4f-.LPG0(%r13)
b 0(%r13)
- .align 4
+ .align 8
4: .long startup_continue
-5: .long sched_clock_base_cc
+#endif
.align 8
-6: .long 0x7fffffff,0xffffffff
+5: .long 0x7fffffff,0xffffffff
#
# params at 10400 (setup.h)
@@ -535,8 +540,4 @@
.byte "root=/dev/ram0 ro"
.byte 0
-#ifdef CONFIG_64BIT
-#include "head64.S"
-#else
-#include "head31.S"
-#endif
+ .org 0x11000
Index: quilt-2.6/arch/s390/kernel/Makefile
===================================================================
--- quilt-2.6.orig/arch/s390/kernel/Makefile 2010-02-24 09:44:24.000000000 +0100
+++ quilt-2.6/arch/s390/kernel/Makefile 2010-02-24 09:44:28.000000000 +0100
@@ -29,6 +29,7 @@
obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
extra-y += head.o init_task.o vmlinux.lds
+extra-y += $(if $(CONFIG_64BIT),head64.o,head31.o)
obj-$(CONFIG_MODULES) += s390_ksyms.o module.o
obj-$(CONFIG_SMP) += smp.o topology.o
Index: quilt-2.6/arch/s390/kernel/sclp.S
===================================================================
--- quilt-2.6.orig/arch/s390/kernel/sclp.S 2010-02-24 09:28:13.000000000 +0100
+++ quilt-2.6/arch/s390/kernel/sclp.S 2010-02-24 09:44:28.000000000 +0100
@@ -9,8 +9,10 @@
*/
LC_EXT_NEW_PSW = 0x58 # addr of ext int handler
+LC_EXT_NEW_PSW_64 = 0x1b0 # addr of ext int handler 64 bit
LC_EXT_INT_PARAM = 0x80 # addr of ext int parameter
LC_EXT_INT_CODE = 0x86 # addr of ext int code
+LC_AR_MODE_ID = 0xa3
#
# Subroutine which waits synchronously until either an external interruption
@@ -30,8 +32,16 @@
.LbaseS1:
ahi %r15,-96 # create stack frame
la %r8,LC_EXT_NEW_PSW # register int handler
- mvc .LoldpswS1-.LbaseS1(8,%r13),0(%r8)
- mvc 0(8,%r8),.LextpswS1-.LbaseS1(%r13)
+ la %r9,.LextpswS1-.LbaseS1(%r13)
+#ifdef CONFIG_64BIT
+ tm LC_AR_MODE_ID,1
+ jno .Lesa1
+ la %r8,LC_EXT_NEW_PSW_64 # register int handler 64 bit
+ la %r9,.LextpswS1_64-.LbaseS1(%r13)
+.Lesa1:
+#endif
+ mvc .LoldpswS1-.LbaseS1(16,%r13),0(%r8)
+ mvc 0(16,%r8),0(%r9)
lhi %r6,0x0200 # cr mask for ext int (cr0.54)
ltr %r2,%r2
jz .LsetctS1
@@ -64,15 +74,19 @@
.LtimeoutS1:
lctl %c0,%c0,.LctlS1-.LbaseS1(%r13) # restore interrupt setting
# restore old handler
- mvc 0(8,%r8),.LoldpswS1-.LbaseS1(%r13)
+ mvc 0(16,%r8),.LoldpswS1-.LbaseS1(%r13)
lm %r6,%r15,120(%r15) # restore registers
br %r14 # return to caller
.align 8
.LoldpswS1:
- .long 0, 0 # old ext int PSW
+ .long 0, 0, 0, 0 # old ext int PSW
.LextpswS1:
.long 0x00080000, 0x80000000+.LwaitS1 # PSW to handle ext int
+#ifdef CONFIG_64BIT
+.LextpswS1_64:
+ .quad 0x0000000180000000, .LwaitS1 # PSW to handle ext int, 64 bit
+#endif
.LwaitpswS1:
.long 0x010a0000, 0x00000000+.LloopS1 # PSW to wait for ext int
.LtimeS1:
@@ -250,6 +264,13 @@
_sclp_print_early:
stm %r6,%r15,24(%r15) # save registers
ahi %r15,-96 # create stack frame
+#ifdef CONFIG_64BIT
+ tm LC_AR_MODE_ID,1
+ jno .Lesa2
+ ahi %r15,-80
+ stmh %r6,%r15,96(%r15) # store upper register halves
+.Lesa2:
+#endif
lr %r10,%r2 # save string pointer
lhi %r2,0
bras %r14,_sclp_setup # enable console
@@ -262,6 +283,13 @@
lhi %r2,1
bras %r14,_sclp_setup # disable console
.LendS5:
+#ifdef CONFIG_64BIT
+ tm LC_AR_MODE_ID,1
+ jno .Lesa3
+ lmh %r6,%r15,96(%r15) # store upper register halves
+ ahi %r15,80
+.Lesa3:
+#endif
lm %r6,%r15,120(%r15) # restore registers
br %r14
Index: quilt-2.6/arch/s390/Makefile
===================================================================
--- quilt-2.6.orig/arch/s390/Makefile 2010-02-24 09:28:13.000000000 +0100
+++ quilt-2.6/arch/s390/Makefile 2010-02-24 09:44:28.000000000 +0100
@@ -14,6 +14,7 @@
#
ifndef CONFIG_64BIT
+LD_BFD := elf32-s390
LDFLAGS := -m elf_s390
KBUILD_CFLAGS += -m31
KBUILD_AFLAGS += -m31
@@ -21,6 +22,7 @@
STACK_SIZE := 8192
CHECKFLAGS += -D__s390__ -msize-long
else
+LD_BFD := elf64-s390
LDFLAGS := -m elf64_s390
MODFLAGS += -fpic -D__PIC__
KBUILD_CFLAGS += -m64
@@ -30,6 +32,8 @@
CHECKFLAGS += -D__s390__ -D__s390x__
endif
+export LD_BFD
+
cflags-$(CONFIG_MARCH_G5) += $(call cc-option,-march=g5)
cflags-$(CONFIG_MARCH_Z900) += $(call cc-option,-march=z900)
cflags-$(CONFIG_MARCH_Z990) += $(call cc-option,-march=z990)
@@ -85,7 +89,9 @@
OBJCOPYFLAGS := -O binary
LDFLAGS_vmlinux := -e start
-head-y := arch/s390/kernel/head.o arch/s390/kernel/init_task.o
+head-y := arch/s390/kernel/head.o
+head-y += arch/s390/kernel/$(if $(CONFIG_64BIT),head64.o,head31.o)
+head-y += arch/s390/kernel/init_task.o
core-y += arch/s390/mm/ arch/s390/kernel/ arch/s390/crypto/ \
arch/s390/appldata/ arch/s390/hypfs/ arch/s390/kvm/
@@ -99,12 +105,12 @@
boot := arch/s390/boot
-all: image
+all: image bzImage
install: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
-image: vmlinux
+image bzImage: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
zfcpdump:
@@ -116,4 +122,5 @@
# Don't use tabs in echo arguments
define archhelp
echo '* image - Kernel image for IPL ($(boot)/image)'
+ echo '* bzImage - Compressed kernel image for IPL ($(boot)/bzImage)'
endef
--
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