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-rw-r--r--arch/x86/Kbuild2
-rw-r--r--arch/x86/realmode/Makefile20
-rw-r--r--arch/x86/realmode/rm/.gitignore3
-rw-r--r--arch/x86/realmode/rm/Makefile63
-rw-r--r--arch/x86/realmode/rm/header.S16
-rw-r--r--arch/x86/realmode/rm/realmode.lds.S68
-rw-r--r--arch/x86/realmode/rmpiggy.S18
7 files changed, 189 insertions, 1 deletions
diff --git a/arch/x86/Kbuild b/arch/x86/Kbuild
index 0e9dec6..e5287d8 100644
--- a/arch/x86/Kbuild
+++ b/arch/x86/Kbuild
@@ -1,4 +1,3 @@
-
obj-$(CONFIG_KVM) += kvm/
# Xen paravirtualization support
@@ -7,6 +6,7 @@ obj-$(CONFIG_XEN) += xen/
# lguest paravirtualization support
obj-$(CONFIG_LGUEST_GUEST) += lguest/
+obj-y += realmode/
obj-y += kernel/
obj-y += mm/
diff --git a/arch/x86/realmode/Makefile b/arch/x86/realmode/Makefile
new file mode 100644
index 0000000..f22a4f8
--- /dev/null
+++ b/arch/x86/realmode/Makefile
@@ -0,0 +1,20 @@
+#
+# arch/x86/realmode/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+#
+
+subdir- := rm
+
+obj-y += rmpiggy.o
+
+$(obj)/rmpiggy.o: $(obj)/rm/realmode.relocs $(obj)/rm/realmode.bin
+
+$(obj)/rm/realmode.bin: FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/rm $@
+
+$(obj)/rm/realmode.relocs: FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/rm $@
diff --git a/arch/x86/realmode/rm/.gitignore b/arch/x86/realmode/rm/.gitignore
new file mode 100644
index 0000000..b6ed3a2
--- /dev/null
+++ b/arch/x86/realmode/rm/.gitignore
@@ -0,0 +1,3 @@
+pasyms.h
+realmode.lds
+realmode.relocs
diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
new file mode 100644
index 0000000..7c3f202
--- /dev/null
+++ b/arch/x86/realmode/rm/Makefile
@@ -0,0 +1,63 @@
+#
+# arch/x86/realmode/Makefile
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License. See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+#
+
+subdir- := wakeup
+
+always := realmode.bin
+
+realmode-y += header.o
+
+targets += $(realmode-y)
+
+REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y))
+
+sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/pa_\2 = \2;/p'
+
+quiet_cmd_pasyms = PASYMS $@
+ cmd_pasyms = $(NM) $(filter-out FORCE,$^) | \
+ sed $(sed-pasyms) | sort | uniq > $@
+
+$(obj)/pasyms.h: $(REALMODE_OBJS) FORCE
+ $(call if_changed,pasyms)
+
+$(obj)/realmode.lds: $(obj)/pasyms.h
+
+LDFLAGS_realmode.elf := --emit-relocs -T
+CPPFLAGS_realmode.lds += -P -C -I$(obj)
+
+$(obj)/realmode.elf: $(obj)/realmode.lds $(REALMODE_OBJS) FORCE
+ $(call if_changed,ld)
+
+OBJCOPYFLAGS_realmode.bin := -O binary
+
+$(obj)/realmode.bin: $(obj)/realmode.elf
+ $(call if_changed,objcopy)
+
+quiet_cmd_relocs = RELOCS $@
+ cmd_relocs = scripts/x86-relocs --realmode $< > $@
+$(obj)/realmode.relocs: $(obj)/realmode.elf FORCE
+ $(call if_changed,relocs)
+
+# ---------------------------------------------------------------------------
+
+# 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) -m32 -g -Os -D_SETUP -D__KERNEL__ \
+ -DDISABLE_BRANCH_PROFILING \
+ -Wall -Wstrict-prototypes \
+ -march=i386 -mregparm=3 \
+ -include $(srctree)/$(src)/../../boot/code16gcc.h \
+ -fno-strict-aliasing -fomit-frame-pointer \
+ $(call cc-option, -ffreestanding) \
+ $(call cc-option, -fno-toplevel-reorder,\
+ $(call cc-option, -fno-unit-at-a-time)) \
+ $(call cc-option, -fno-stack-protector) \
+ $(call cc-option, -mpreferred-stack-boundary=2)
+KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
+GCOV_PROFILE := n
diff --git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S
new file mode 100644
index 0000000..7be17f2
--- /dev/null
+++ b/arch/x86/realmode/rm/header.S
@@ -0,0 +1,16 @@
+/*
+ * Real-mode blob header; this should match realmode.h and be
+ * readonly; for mutable data instead add pointers into the .data
+ * or .bss sections as appropriate.
+ */
+
+#include <linux/linkage.h>
+#include <asm/page_types.h>
+
+ .section ".header", "a"
+
+ENTRY(real_mode_header)
+ .long pa_text_start
+ .long pa_ro_end
+ .long pa_end
+END(real_mode_header)
diff --git a/arch/x86/realmode/rm/realmode.lds.S b/arch/x86/realmode/rm/realmode.lds.S
new file mode 100644
index 0000000..c5b8a4f
--- /dev/null
+++ b/arch/x86/realmode/rm/realmode.lds.S
@@ -0,0 +1,68 @@
+/*
+ * realmode.lds.S
+ *
+ * Linker script for the real-mode code
+ */
+
+#include <asm/page_types.h>
+
+#undef i386
+
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+
+SECTIONS
+{
+ real_mode_seg = 0;
+
+ . = 0;
+ .header : {
+ pa_real_mode_base = .;
+ *(.header)
+ }
+
+ . = ALIGN(4);
+ .rodata : {
+ *(.rodata)
+ *(.rodata.*)
+ }
+
+ . = ALIGN(PAGE_SIZE);
+ .text : {
+ pa_text_start = .;
+ *(.text)
+ *(.text.*)
+ }
+
+ .text32 : {
+ *(.text32)
+ *(.text32.*)
+ pa_ro_end = .;
+ }
+
+ . = ALIGN(PAGE_SIZE);
+ .data : {
+ *(.data)
+ *(.data.*)
+ }
+
+ . = ALIGN(128);
+ .bss : {
+ *(.bss*)
+ }
+
+ /* End signature for integrity checking */
+ . = ALIGN(4);
+ .signature : {
+ *(.signature)
+ pa_end = .;
+ }
+
+ /DISCARD/ : {
+ *(.note*)
+ *(.debug*)
+ *(.eh_frame*)
+ }
+
+#include "pasyms.h"
+}
diff --git a/arch/x86/realmode/rmpiggy.S b/arch/x86/realmode/rmpiggy.S
new file mode 100644
index 0000000..6047d7f
--- /dev/null
+++ b/arch/x86/realmode/rmpiggy.S
@@ -0,0 +1,18 @@
+/*
+ * Wrapper script for the realmode binary as a transport object
+ * before copying to low memory.
+ */
+#include <linux/linkage.h>
+#include <asm/page_types.h>
+
+ .section ".init.data","aw"
+
+ .balign PAGE_SIZE
+
+ENTRY(real_mode_blob)
+ .incbin "arch/x86/realmode/rm/realmode.bin"
+END(real_mode_blob)
+
+ENTRY(real_mode_relocs)
+ .incbin "arch/x86/realmode/rm/realmode.relocs"
+END(real_mode_relocs)
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