metag: Remove arch/metag/

The earliest Meta architecture port of Linux I have a record of was an
import of a Meta port of Linux v2.4.1 in February 2004, which was worked
on significantly over the next few years by Graham Whaley, Will Newton,
Matt Fleming, myself and others.

Eventually the port was merged into mainline in v3.9 in March 2013, not
long after Imagination Technologies bought MIPS Technologies and shifted
its CPU focus over to the MIPS architecture.

As a result, though the port was maintained for a while, kept on life
support for a while longer, and useful for testing a few specific
drivers for which I don't have ready access to the equivalent MIPS
hardware, it is now essentially dead with no users.

It is also stuck using an out-of-tree toolchain based on GCC 4.2.4 which
is no longer maintained, now struggles to build modern kernels due to
toolchain bugs, and doesn't itself build with a modern GCC. The latest
buildroot port is still using an old uClibc snapshot which is no longer
served, and the latest uClibc doesn't build with GCC 4.2.4.

So lets call it a day and drop the Meta architecture port from the
kernel. RIP Meta.

Signed-off-by: James Hogan <jhogan@kernel.org>
Link: https://lkml.kernel.org/r/95906b76-6ce1-3f84-eaba-c29b4ae952eb@roeck-us.net
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Graham Whaley <graham.whaley@gmail.com>
Cc: linux-metag@vger.kernel.org

1 files changed, 0 insertions, 66 deletions

diff --git a/arch/metag/kernel/head.S b/arch/metag/kernel/head.S
deleted file mode 100644
index 3ed2781..0000000
--- a/arch/metag/kernel/head.S
+++ /dev/null
@@ -1,66 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-	! Copyright 2005,2006,2007,2009 Imagination Technologies
-
-#include <linux/init.h>
-#include <asm/metag_mem.h>
-#include <generated/asm-offsets.h>
-#undef __exit
-
-	__HEAD
-	! Setup the stack and get going into _metag_start_kernel
-	.global	__start
-	.type   __start,function
-__start:
-	! D1Ar1 contains pTBI (ISTAT)
-	! D0Ar2 contains pTBI
-	! D1Ar3 contains __pTBISegs
-	! D0Ar4 contains kernel arglist pointer
-
-	MOVT    D0Re0,#HI(___pTBIs)
-	ADD     D0Re0,D0Re0,#LO(___pTBIs)
-	SETL    [D0Re0],D0Ar2,D1Ar1
-	MOVT    D0Re0,#HI(___pTBISegs)
-	ADD     D0Re0,D0Re0,#LO(___pTBISegs)
-	SETD    [D0Re0],D1Ar3
-	MOV	A0FrP,#0
-	MOV	D0Re0,#0
-	MOV	D1Re0,#0
-	MOV	D1Ar3,#0
-	MOV	D1Ar1,D0Ar4			!Store kernel boot params
-	MOV	D1Ar5,#0
-	MOV	D0Ar6,#0
-#ifdef CONFIG_METAG_DSP
-	MOV	D0.8,#0
-#endif
-	MOVT    A0StP,#HI(_init_thread_union)
-	ADD	A0StP,A0StP,#LO(_init_thread_union)
-	ADD     A0StP,A0StP,#THREAD_INFO_SIZE
-	MOVT	D1RtP,#HI(_metag_start_kernel)
-	CALL	D1RtP,#LO(_metag_start_kernel)
-	.size	__start,.-__start
-
-	!! Needed by TBX
-	.global	__exit
-	.type   __exit,function
-__exit:
-	XOR     TXENABLE,D0Re0,D0Re0
-	.size	__exit,.-__exit
-
-#ifdef CONFIG_SMP
-	.global _secondary_startup
-	.type _secondary_startup,function
-_secondary_startup:
-#if CONFIG_PAGE_OFFSET < LINGLOBAL_BASE
-	! In case GCOn has just been turned on we need to fence any writes that
-	! the boot thread might have performed prior to coherency taking effect.
-	MOVT	D0Re0,#HI(LINSYSEVENT_WR_ATOMIC_UNLOCK)
-	MOV	D1Re0,#0
-	SETD	[D0Re0], D1Re0
-#endif
-	MOVT	A0StP,#HI(_secondary_data_stack)
-	ADD	A0StP,A0StP,#LO(_secondary_data_stack)
-	GETD	A0StP,[A0StP]
-	ADD	A0StP,A0StP,#THREAD_INFO_SIZE
-	B	_secondary_start_kernel
-	.size	_secondary_startup,.-_secondary_startup
-#endif