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| author |   Cédric Le Goater <clg@fr.ibm.com> | 2014-04-24 09:23:39 +0200 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-04-28 17:36:21 +1000 |
| commit | 147c05168fc86e824ccd1c0a02b40843e3cbca88 (patch) | |
| tree | b11fef2a92755918913b6c630d4fdb8f64af394a /arch/powerpc/platforms | |
| parent | powerpc/boot: Add a global entry point for pseries (diff) | |
| download | linux-dev-147c05168fc86e824ccd1c0a02b40843e3cbca88.tar.xz linux-dev-147c05168fc86e824ccd1c0a02b40843e3cbca88.zip | |
powerpc/boot: Add support for 64bit little endian wrapper
The code is only slightly modified : entry points now use the
FIXUP_ENDIAN trampoline to switch endian order. The 32bit wrapper
is kept for big endian kernels and 64bit is enforced for little
endian kernels with a PPC64_BOOT_WRAPPER config option.
The linker script is generated using the kernel preprocessor flags
to make use of the CONFIG_* definitions and the wrapper script is
modified to take into account the new elf64ppc format.
Finally, the zImage file is compiled as a position independent
executable (-pie) which makes it loadable at any address by the
firmware.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig.cputype | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index d9e2b19b7c8d..43b65ad1970a 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -422,6 +422,7 @@ config CPU_BIG_ENDIAN config CPU_LITTLE_ENDIAN bool "Build little endian kernel" + select PPC64_BOOT_WRAPPER help Build a little endian kernel. @@ -430,3 +431,7 @@ config CPU_LITTLE_ENDIAN little endian powerpc. endchoice + +config PPC64_BOOT_WRAPPER + def_bool n + depends on CPU_LITTLE_ENDIAN |