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is no longer maintained, now struggles to build modern kernels due to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, 82 deletions

diff --git a/arch/metag/mm/numa.c b/arch/metag/mm/numa.c
deleted file mode 100644
index 67b46c295072..000000000000
--- a/arch/metag/mm/numa.c
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- *  Multiple memory node support for Meta machines
- *
- *  Copyright (C) 2007  Paul Mundt
- *  Copyright (C) 2010  Imagination Technologies Ltd.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/export.h>
-#include <linux/bootmem.h>
-#include <linux/memblock.h>
-#include <linux/mm.h>
-#include <linux/numa.h>
-#include <linux/pfn.h>
-#include <asm/sections.h>
-
-struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
-EXPORT_SYMBOL_GPL(node_data);
-
-extern char _heap_start[];
-
-/*
- * On Meta machines the conventional approach is to stash system RAM
- * in node 0, and other memory blocks in to node 1 and up, ordered by
- * latency. Each node's pgdat is node-local at the beginning of the node,
- * immediately followed by the node mem map.
- */
-void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
-{
-	unsigned long bootmap_pages, bootmem_paddr;
-	unsigned long start_pfn, end_pfn;
-	unsigned long pgdat_paddr;
-
-	/* Don't allow bogus node assignment */
-	BUG_ON(nid >= MAX_NUMNODES || nid <= 0);
-
-	start_pfn = start >> PAGE_SHIFT;
-	end_pfn = end >> PAGE_SHIFT;
-
-	memblock_add(start, end - start);
-
-	memblock_set_node(PFN_PHYS(start_pfn),
-			  PFN_PHYS(end_pfn - start_pfn),
-			  &memblock.memory, nid);
-
-	/* Node-local pgdat */
-	pgdat_paddr = memblock_alloc_base(sizeof(struct pglist_data),
-					  SMP_CACHE_BYTES, end);
-	NODE_DATA(nid) = __va(pgdat_paddr);
-	memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
-
-	NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
-	NODE_DATA(nid)->node_start_pfn = start_pfn;
-	NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
-
-	/* Node-local bootmap */
-	bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
-	bootmem_paddr = memblock_alloc_base(bootmap_pages << PAGE_SHIFT,
-					    PAGE_SIZE, end);
-	init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT,
-			  start_pfn, end_pfn);
-
-	free_bootmem_with_active_regions(nid, end_pfn);
-
-	/* Reserve the pgdat and bootmap space with the bootmem allocator */
-	reserve_bootmem_node(NODE_DATA(nid), pgdat_paddr & PAGE_MASK,
-			     sizeof(struct pglist_data), BOOTMEM_DEFAULT);
-	reserve_bootmem_node(NODE_DATA(nid), bootmem_paddr,
-			     bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
-
-	/* It's up */
-	node_set_online(nid);
-
-	/* Kick sparsemem */
-	sparse_memory_present_with_active_regions(nid);
-}
-
-void __init __weak soc_mem_setup(void)
-{
-}