From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>
Subject: [patch 28/32] [PATCH] add support for compressed kernels
Date: Wed, 24 Feb 2010 09:44:58 +0100 [thread overview]
Message-ID: <20100224084453.013858935@de.ibm.com> (raw)
In-Reply-To: 20100224084430.193562869@de.ibm.com
[-- Attachment #1: 127-kernel-compression.diff --]
[-- Type: text/plain, Size: 23541 bytes --]
From: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@de.ibm.com>
---
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@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
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@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
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@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 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@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
@@ -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@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
@@ -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@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
@@ -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
next prev parent reply other threads:[~2010-02-24 8:44 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-24 8:44 [patch 00/32] s390 patch queue for 2.6.34 Martin Schwidefsky
2010-02-24 8:44 ` [patch 01/32] [PATCH] uaccess: implement strict user copy checks Martin Schwidefsky
2010-02-24 8:44 ` [patch 02/32] [PATCH] adapt text to cu3088-removal Martin Schwidefsky
2010-02-24 8:44 ` [patch 03/32] [PATCH] cio: consolidate workqueues Martin Schwidefsky
2010-02-24 8:44 ` [patch 04/32] [PATCH] cio: introduce cio_settle Martin Schwidefsky
2010-02-24 8:44 ` [patch 05/32] [PATCH] cio: wait for channel report Martin Schwidefsky
2010-02-24 8:44 ` [patch 06/32] [PATCH] cio: make wait_events interruptible Martin Schwidefsky
2010-02-24 8:44 ` [patch 07/32] [PATCH] use inline assembly contraints available with gcc 3.3.3 Martin Schwidefsky
2010-02-24 8:44 ` [patch 08/32] [PATCH] zfcpdump: remove cross arch dump support Martin Schwidefsky
2010-02-24 8:44 ` [patch 09/32] [PATCH] smp: rename and add lowcore defines Martin Schwidefsky
2010-02-24 8:44 ` [patch 10/32] [PATCH] smp: always reboot on cpu 0 Martin Schwidefsky
2010-02-24 8:44 ` [patch 11/32] [PATCH] qdio: account processed SBAL during queue scan Martin Schwidefsky
2010-02-24 8:44 ` [patch 12/32] [PATCH] qdio: optimize cache line usage of struct qdio_irq Martin Schwidefsky
2010-02-24 8:44 ` [patch 13/32] [PATCH] add MACHINE_IS_LPAR flag Martin Schwidefsky
2010-02-24 8:44 ` [patch 14/32] [PATCH] sysinfo: fix SYSIB 3,2,2 structure Martin Schwidefsky
2010-02-24 8:44 ` [patch 15/32] [PATCH] spinlock: check virtual cpu running status Martin Schwidefsky
2010-02-24 8:44 ` [patch 16/32] [PATCH] smp: rework sigp code Martin Schwidefsky
2010-02-24 8:44 ` [patch 17/32] [PATCH] Replace ENOTSUPP usage with EOPNOTSUPP Martin Schwidefsky
2010-02-24 8:44 ` [patch 18/32] [PATCH] free_initmem: reduce code duplication Martin Schwidefsky
2010-02-24 8:44 ` [patch 19/32] [PATCH] ccw_device_notify: improve return codes Martin Schwidefsky
2010-02-24 8:44 ` [patch 20/32] [PATCH] Cleanup struct _lowcore usage and defines Martin Schwidefsky
2010-02-24 8:44 ` [patch 21/32] [PATCH] bug: use relative pointers in bug table entries Martin Schwidefsky
2010-02-24 8:44 ` [patch 22/32] [PATCH] use kprobes_built_in() in mm/fault code Martin Schwidefsky
2010-02-24 8:44 ` [patch 23/32] [PATCH] dasd: fix online/offline race Martin Schwidefsky
2010-02-24 8:44 ` [patch 24/32] [PATCH] add z9-ec/z10 instruction to kernel disassembler Martin Schwidefsky
2010-02-24 8:44 ` [patch 25/32] [PATCH] seq_file: convert drivers/s390/ Martin Schwidefsky
2010-02-24 8:44 ` [patch 26/32] [PATCH] codepage conversion of kernel parameter line Martin Schwidefsky
2010-02-24 8:44 ` [patch 27/32] [PATCH] Define new s390 ELF note sections in elf.h Martin Schwidefsky
2010-02-24 8:44 ` Martin Schwidefsky [this message]
2010-02-24 8:44 ` [patch 29/32] [PATCH] correct vdso version string Martin Schwidefsky
2010-02-24 8:45 ` [patch 30/32] [PATCH] dasd: fix refcounting Martin Schwidefsky
2010-02-24 8:45 ` [patch 31/32] [PATCH] dasd: correct offline processing Martin Schwidefsky
2010-02-24 8:45 ` [patch 32/32] [PATCH] cio: trigger subchannel event at resume time Martin Schwidefsky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100224084453.013858935@de.ibm.com \
--to=schwidefsky@de.ibm.com \
--cc=heiko.carstens@de.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.