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is no longer maintained, now struggles to build modern kernels due to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, 87 deletions

diff --git a/arch/metag/tbx/tbiroot.S b/arch/metag/tbx/tbiroot.S
deleted file mode 100644
index 7d84daf1340b..000000000000
--- a/arch/metag/tbx/tbiroot.S
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * tbiroot.S
- *
- * Copyright (C) 2001, 2002, 2012 Imagination Technologies.
- *
- * This program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU General Public License version 2 as published by the
- * Free Software Foundation.
- *
- * Module that creates and via ___TBI function returns a TBI Root Block for
- * interrupt and background processing on the current thread.
- */
-
-	.file	"tbiroot.S"
-#include <asm/metag_regs.h>
-
-/*
- * Get data structures and defines from the TBI C header
- */
-#include <asm/tbx.h>
-
-
-/* If signals need to be exchanged we must create a TBI Root Block */
-
-	.data
-	.balign	8
-	.global	___pTBIs
-	.type	___pTBIs,object
-___pTBIs:
-	.long	0 /* Bgnd+Int root block ptrs */
-	.long	0
-	.size	___pTBIs,.-___pTBIs
-
-
-/*
- * Return ___pTBIs value specific to execution level with promotion/demotion
- *
- * Register Usage: D1Ar1 is Id, D0Re0 is the primary result
- *                 D1Re0 is secondary result (___pTBIs for other exec level)
- */
-	.text
-	.balign	4
-	.global	___TBI
-	.type	___TBI,function
-___TBI:
-	TSTT	D1Ar1,#HI(TBID_ISTAT_BIT)	/* Bgnd or Int level? */
-	MOVT	A1LbP,#HI(___pTBIs)
-	ADD	A1LbP,A1LbP,#LO(___pTBIs)
-	GETL	D0Re0,D1Re0,[A1LbP] /* Base of root block table */
-	SWAPNZ	D0Re0,D1Re0			/* Swap if asked */
-	MOV	PC,D1RtP
-	.size	___TBI,.-___TBI
-
-
-/*
- * Return identifier of the current thread in TBI segment or signal format with
- * secondary mask to indicate privilege and interrupt level of thread
- */
-	.text
-	.balign	4
-	.global	___TBIThrdPrivId
-	.type	___TBIThrdPrivId,function
-___TBIThrdPrivId:
-	.global	___TBIThreadId
-	.type	___TBIThreadId,function
-___TBIThreadId:
-#ifndef METAC_0_1
-	MOV	D1Re0,TXSTATUS			/* Are we privileged or int? */
-	MOV	D0Re0,TXENABLE			/* Which thread are we? */
-/* Disable privilege adaption for now */
-	ANDT	D1Re0,D1Re0,#HI(TXSTATUS_ISTAT_BIT) /* +TXSTATUS_PSTAT_BIT) */
-	LSL	D1Re0,D1Re0,#TBID_ISTAT_S-TXSTATUS_ISTAT_S
-	AND	D0Re0,D0Re0,#TXENABLE_THREAD_BITS
-	LSL	D0Re0,D0Re0,#TBID_THREAD_S-TXENABLE_THREAD_S
-#else
-/* Thread 0 only */
-	XOR	D0Re0,D0Re0,D0Re0
-	XOR	D1Re0,D1Re0,D1Re0
-#endif
-	MOV 	PC,D1RtP			/* Return */
-	.size	___TBIThrdPrivId,.-___TBIThrdPrivId
-	.size	___TBIThreadId,.-___TBIThreadId 
-
-
-/*
- * End of tbiroot.S
- */