[meta-freescale] [meta-fsl-ppc][PATCH] linux: fix 64bit kernel builds with binutils 2.24
ting.liu at freescale.com
ting.liu at freescale.com
Wed Jun 25 02:09:46 PDT 2014
From: Ting Liu <ting.liu at freescale.com>
backported from:
http://permalink.gmane.org/gmane.linux.ports.ppc.embedded/70273
Signed-off-by: Ting Liu <ting.liu at freescale.com>
---
...erpc-Fix-64-bit-builds-with-binutils-2.24.patch | 84 ++++++++++++++++++++++
recipes-kernel/linux/linux-qoriq-sdk.inc | 4 +-
2 files changed, 87 insertions(+), 1 deletion(-)
create mode 100644 recipes-kernel/linux/files/powerpc-Fix-64-bit-builds-with-binutils-2.24.patch
diff --git a/recipes-kernel/linux/files/powerpc-Fix-64-bit-builds-with-binutils-2.24.patch b/recipes-kernel/linux/files/powerpc-Fix-64-bit-builds-with-binutils-2.24.patch
new file mode 100644
index 0000000..b55f66b
--- /dev/null
+++ b/recipes-kernel/linux/files/powerpc-Fix-64-bit-builds-with-binutils-2.24.patch
@@ -0,0 +1,84 @@
+From 7092c1143fc10d748bb124624568848409338d89 Mon Sep 17 00:00:00 2001
+From: Guenter Roeck <linux at roeck-us.net>
+Date: Thu, 15 May 2014 09:33:42 -0700
+Subject: [PATCH] powerpc: Fix 64 bit builds with binutils 2.24
+
+commit 7998eb3dc700aaf499f93f50b3d77da834ef9e1d upstream.
+
+With binutils 2.24, various 64 bit builds fail with relocation errors
+such as
+
+arch/powerpc/kernel/built-in.o: In function `exc_debug_crit_book3e':
+ (.text+0x165ee): relocation truncated to fit: R_PPC64_ADDR16_HI
+ against symbol `interrupt_base_book3e' defined in .text section
+ in arch/powerpc/kernel/built-in.o
+arch/powerpc/kernel/built-in.o: In function `exc_debug_crit_book3e':
+ (.text+0x16602): relocation truncated to fit: R_PPC64_ADDR16_HI
+ against symbol `interrupt_end_book3e' defined in .text section
+ in arch/powerpc/kernel/built-in.o
+
+The assembler maintainer says:
+
+ I changed the ABI, something that had to be done but unfortunately
+ happens to break the booke kernel code. When building up a 64-bit
+ value with lis, ori, shl, oris, ori or similar sequences, you now
+ should use @high and @higha in place of @h and @ha. @h and @ha
+ (and their associated relocs R_PPC64_ADDR16_HI and R_PPC64_ADDR16_HA)
+ now report overflow if the value is out of 32-bit signed range.
+ ie. @h and @ha assume you're building a 32-bit value. This is needed
+ to report out-of-range -mcmodel=medium toc pointer offsets in @toc at h
+ and @toc at ha expressions, and for consistency I did the same for all
+ other @h and @ha relocs.
+
+Replacing @h with @high in one strategic location fixes the relocation
+errors. This has to be done conditionally since the assembler either
+supports @h or @high but not both.
+
+Signed-off-by: Guenter Roeck <linux at roeck-us.net>
+Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
+Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
+---
+ arch/powerpc/Makefile | 4 +++-
+ arch/powerpc/include/asm/ppc_asm.h | 7 ++++++-
+ 2 files changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
+index 1893fb9..df0cd0c 100644
+--- a/arch/powerpc/Makefile
++++ b/arch/powerpc/Makefile
+@@ -100,7 +100,9 @@ CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7)
+
+ CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell)
+
+-KBUILD_CPPFLAGS += -Iarch/$(ARCH)
++asinstr := $(call as-instr,lis 9$(comma)foo at high,-DHAVE_AS_ATHIGH=1)
++
++KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr)
+ KBUILD_AFLAGS += -msoft-float -Iarch/$(ARCH)
+ KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
+ CPP = $(CC) -E $(KBUILD_CFLAGS)
+diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h
+index 3a853ae..b3205e6 100644
+--- a/arch/powerpc/include/asm/ppc_asm.h
++++ b/arch/powerpc/include/asm/ppc_asm.h
+@@ -309,11 +309,16 @@ n:
+ * ld rY,ADDROFF(name)(rX)
+ */
+ #ifdef __powerpc64__
++#ifdef HAVE_AS_ATHIGH
++#define __AS_ATHIGH high
++#else
++#define __AS_ATHIGH h
++#endif
+ #define LOAD_REG_IMMEDIATE(reg,expr) \
+ lis reg,(expr)@highest; \
+ ori reg,reg,(expr)@higher; \
+ rldicr reg,reg,32,31; \
+- oris reg,reg,(expr)@h; \
++ oris reg,reg,(expr)@__AS_ATHIGH; \
+ ori reg,reg,(expr)@l;
+
+ #define LOAD_REG_ADDR(reg,name) \
+--
+1.7.9.5
+
diff --git a/recipes-kernel/linux/linux-qoriq-sdk.inc b/recipes-kernel/linux/linux-qoriq-sdk.inc
index 83c632e..e6831a3 100644
--- a/recipes-kernel/linux/linux-qoriq-sdk.inc
+++ b/recipes-kernel/linux/linux-qoriq-sdk.inc
@@ -3,7 +3,9 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
PV = "3.8"
INC_PR = "r11"
-SRC_URI = "git://git.freescale.com/ppc/sdk/linux.git;nobranch=1"
+SRC_URI = "git://git.freescale.com/ppc/sdk/linux.git;nobranch=1 \
+ file://powerpc-Fix-64-bit-builds-with-binutils-2.24.patch \
+"
SRCREV = "3edd71eeb4e4ae27baf539e0a5f0c8e8261bf65b"
SRCREV_t2080qds = "47914f6cf77197921c648c6ea8977974fa54d03a"
SRCREV_t2080qds-64b = "47914f6cf77197921c648c6ea8977974fa54d03a"
--
1.8.3.2
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