openembedded-core.git/meta/classes/kernel-arch.bbclass, branch jethro

Revert "kernel/kernel-arch: Explicitly mapping between, i386/x86_64 and x86 for kernel ARCH"

2016-05-11T02:59:39+00:00

This reverts commit a6f52930a68d8462e23486d51cdda715072dd752.

In addition to also causing the problem in [YOCTO #9579], this commit
was reverted in krogoth and master but wasn't reverted in jethro but
should be.  The original revert message was:

This reverts commit 8d310b24927d0f348fb431895f0583733db2aad0.

That commit completely breaks KBUILD_DEFCONFIG because it relies on
$ARCH to match between the target OE arch and the kernel subdirectory
containing the defconfigs. In the kernel all defconfigs for everything
x86-based (including x86_64) is stored in dir arch/x86/configs/

kernel-yocto.bbclass correctly searches for all the defconfigs inside
${S}/arch/${ARCH}/configs/${KBUILD_DEFCONFIG}

Commit 8d310b249 makes it search in wrong places and _only_ if you
define TARGET_ARCH = "athlon" will it search x86 which is nonsensical.

The commit further adds an if clause to hack the mungled kernel arches
back to their original values (ugh) in do_shared_workdir which is run
after do compile, but of course the build breaks before that in
do_kernel_metadata because of the KBUILD_DEFCONFIG mentioned above (so
that hack is useless).

Please fix that corner case bug in another way which does not completely
screw up the kernel arch mapping & defconfig logic. If 64bit configs are
generated in the kernel for 32bit machines because the host is asked,
then it it a bug in the kernel, it is of no use to hack around it in OE.

(From OE-Core rev: bc02a478a5d4a5de7b3943ed809d5c22711f5b1f)

Signed-off-by: Ioan-Adrian Ratiu 
Signed-off-by: Ross Burton 
Signed-off-by: Richard Purdie 

Signed-off-by: Tom Zanussi

kernel/kernel-arch: Explicitly mapping between i386/x86_64 and x86 for kernel ARCH

2016-01-15T15:44:00+00:00

For a bare-bone kernel recipe which specifies 32 bit x86 target,
a 64 bit .config will be generated from do_configure task when
building 32-bit qemux86, once all of these conditions are true:

* arch of host is x86_64
* kernel source tree used in build has commit ffee0de41 which
  actually chooses i386 or x86_64 defconfig by asking host when
  ARCH is "x86" (arch/x86/Makefile)
* bare-bone kernel recipe inherits directly from kernel without
  other special treatments.

Build will fail because of the mismatched kernel architecture.

The patch sets ARCH i386 or x86_64 explicitly to configure
task to avoid this host contamination. Kernel artifact is also
changed so that it can map i386 and x64 back to arch/x86 when
needed.

Signed-off-by: Jianxun Zhang 
Signed-off-by: Richard Purdie

kernel-arch: Add nios2 to valid archs

2015-09-21T22:05:44+00:00

Add nios2 target to valid arch list definition.

Based on previous work by Walter Goossens 
at https://github.com/wgoossens/meta-nios2 .

Signed-off-by: Marek Vasut 
Cc: Walter Goossens 
Signed-off-by: Ross Burton

kernel-arch: Force BFD kernel when using gcc for linking

2015-08-24T22:43:27+00:00

We redefine LD to point to ld.bfd when building kernel, which works in
most cases since kbuild system calls out for bare LD most of the time,
however some of newer kernels e.g. 4.1+ have some code added which can
call gcc directly to do the linking job e.g. arm vdso code

This causes build failures when we have configured the default cross
toolchain to use gold linker as default. Errors like

BFD: arch/arm/vdso/vdso.so: Not enough room for program headers, try
linking with -N
| arm-angstrom-linux-gnueabi-objcopy:arch/arm/vdso/vdso.so[.hash]: Bad
value

start happening.

With this patch we force gcc to choose bfd linker as well

Signed-off-by: Khem Raj 
Signed-off-by: Ross Burton

kernel-arch: Update mapping for MicroBlaze architectures

2015-05-05T21:14:09+00:00

* Add pattern matching for the 'microblazeeb' architecture which maps to
  'microblaze' in the same way as 'microblazeel'

Signed-off-by: Nathan Rossi 
Signed-off-by: Richard Purdie

Revert "kernel-arch.bbclass: add arm64 support to U-Boot architecture map"

2015-02-21T22:04:24+00:00

This reverts commit 0b891265716c414ade29d587fc1a3c4ea7beadbe.

U-Boot does support AArch64, this however was only added to newer
versions of U-Boot and at the time of this original commit the U-Boot in
OE-Core did not support the 'arm64' architecture. OE-Core now has a
newer version of U-Boot for the mkimage recipe and thus supports the
'arm64' architecture.

Signed-off-by: Nathan Rossi 
Signed-off-by: Ross Burton

kernel-arch.bbclass: add arm64 support to U-Boot architecture map

2014-03-21T12:05:32+00:00

to define UBOOT_ARCH, we map kernel architectures to U-Boot architectures.
In the case of arm64 kernel, we should map to arm U-boot architecture.

This patch add the exception rule to the map_uboot_arch function.

Signed-off-by: Fathi Boudra 
Signed-off-by: Richard Purdie

classes: add aarch64_be target

2013-10-14T15:54:36+00:00

Add big endian ARMv8 target to OE infrastructure

Signed-off-by: Victor Kamensky 
Signed-off-by: Koen Kooi 
Signed-off-by: Richard Purdie

kernel-arch: Always use ld.bfd to link the kernel

2013-04-28T11:03:49+00:00

The kernel's penchant for custom linker scripts means that it doesn't
generally get on very well with gold.  Make sure we are using the BFD
linker here no matter what the distro default is set to.

Signed-off-by: Phil Blundell 
Signed-off-by: Saul Wold

kernel-arch.bbclass: don't pass extra args to KERNEL_{CC, LD, AR}

2013-03-04T10:08:03+00:00

Commit a3ca06c3b45c791dd38dbf154ad0fc62b4063475 added extra args to
KERNEL_CC, these revert that bit while maintaining machine additions
in TARGET_??_KERNEL_ARCH

Producing incorrect instructions and generating the following errors:

   CC      arch/powerpc/kernel/init_task.o
| {standard input}: Assembler messages:
| {standard input}:384: Error: junk at end of line: `1'
| {standard input}:949: Error: junk at end of line: `1'
| {standard input}:1428: Error: junk at end of line: `1'
| {standard input}:1526: Error: junk at end of line: `1'
| {standard input}:1626: Error: junk at end of line: `1'
| {standard input}:1685: Error: junk at end of line: `1'
| {standard input}:1973: Error: junk at end of line: `1'
| {standard input}:2001: Error: junk at end of line: `1'
| {standard input}:2100: Error: junk at end of line: `1'
| {standard input}:2168: Error: junk at end of line: `1'
| {standard input}:2520: Error: junk at end of line: `1'
|   CC      arch/powerpc/lib/locks.o

Signed-off-by: Matthew McClintock 
Signed-off-by: Richard Purdie