diff options
| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-21 21:45:08 -0400 |
|---|---|---|
| committer | Alan Tull <alan.tull@freescale.com> | 2011-11-03 12:08:04 -0500 |
| commit | 8754213393526ae07d32c53703b9b6884a8a238d (patch) | |
| tree | 7e7e53ccec8ecbad690cea0a7e514c88d112ccc0 /arch/arm/boot | |
| parent | 044d8df726a8196881e9d45b94ab21e081514956 (diff) | |
ARM: zImage: make sure the stack is 64-bit aligned
commit 3bd2cbb95543acf44fe123eb9f038de54e655eb4 upstream.
With ARMv5+ and EABI, the compiler expects a 64-bit aligned stack so
instructions like STRD and LDRD can be used. Without this, mysterious
boot failures were seen semi randomly with the LZMA decompressor.
While at it, let's align .bss as well.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
(cherry picked from commit 1da3e2d35573b23ae38aa0f1b096cb978ecef445)
Diffstat (limited to 'arch/arm/boot')
| -rw-r--r-- | arch/arm/boot/compressed/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/boot/compressed/vmlinux.lds.in | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 0a8f748e506a..e1bea82284ae 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -59,7 +59,7 @@ ZTEXTADDR := $(CONFIG_ZBOOT_ROM_TEXT) ZBSSADDR := $(CONFIG_ZBOOT_ROM_BSS) else ZTEXTADDR := 0 -ZBSSADDR := ALIGN(4) +ZBSSADDR := ALIGN(8) endif SEDFLAGS = s/TEXT_START/$(ZTEXTADDR)/;s/BSS_START/$(ZBSSADDR)/ diff --git a/arch/arm/boot/compressed/vmlinux.lds.in b/arch/arm/boot/compressed/vmlinux.lds.in index 366a924019ac..7ece7056ba0e 100644 --- a/arch/arm/boot/compressed/vmlinux.lds.in +++ b/arch/arm/boot/compressed/vmlinux.lds.in @@ -57,6 +57,7 @@ SECTIONS .bss : { *(.bss) } _end = .; + . = ALIGN(8); /* the stack must be 64-bit aligned */ .stack : { *(.stack) } .stab 0 : { *(.stab) } |