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is no longer maintained, now struggles to build modern kernels due to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

14 files changed, 0 insertions, 2530 deletions

diff --git a/arch/metag/mm/Kconfig b/arch/metag/mm/Kconfig
deleted file mode 100644
index 9d4b2c67dcc1..000000000000
--- a/arch/metag/mm/Kconfig
+++ /dev/null
@@ -1,147 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-menu "Memory management options"
-
-config PAGE_OFFSET
-	hex "Kernel page offset address"
-	default "0x40000000"
-	help
-	  This option allows you to set the virtual address at which the
-	  kernel will be mapped to.
-endmenu
-
-config KERNEL_4M_PAGES
-	bool "Map kernel with 4MB pages"
-	depends on METAG_META21_MMU
-	default y
-	help
-	  Map the kernel with large pages to reduce TLB pressure.
-
-choice
-	prompt "User page size"
-	default PAGE_SIZE_4K
-
-config PAGE_SIZE_4K
-	bool "4kB"
-	help
-	  This is the default page size used by all Meta cores.
-
-config PAGE_SIZE_8K
-	bool "8kB"
-	depends on METAG_META21_MMU
-	help
-	  This enables 8kB pages as supported by Meta 2.x and later MMUs.
-
-config PAGE_SIZE_16K
-	bool "16kB"
-	depends on METAG_META21_MMU
-	help
-	  This enables 16kB pages as supported by Meta 2.x and later MMUs.
-
-endchoice
-
-config NUMA
-	bool "Non Uniform Memory Access (NUMA) Support"
-	select ARCH_WANT_NUMA_VARIABLE_LOCALITY
-	help
-	  Some Meta systems have MMU-mappable on-chip memories with
-	  lower latencies than main memory. This enables support for
-	  these blocks by binding them to nodes and allowing
-	  memory policies to be used for prioritizing and controlling
-	  allocation behaviour.
-
-config FORCE_MAX_ZONEORDER
-	int "Maximum zone order"
-	range 10 32
-	default "10"
-	help
-	  The kernel memory allocator divides physically contiguous memory
-	  blocks into "zones", where each zone is a power of two number of
-	  pages.  This option selects the largest power of two that the kernel
-	  keeps in the memory allocator.  If you need to allocate very large
-	  blocks of physically contiguous memory, then you may need to
-	  increase this value.
-
-	  This config option is actually maximum order plus one. For example,
-	  a value of 11 means that the largest free memory block is 2^10 pages.
-
-	  The page size is not necessarily 4KB.  Keep this in mind
-	  when choosing a value for this option.
-
-config METAG_L2C
-	bool "Level 2 Cache Support"
-	depends on METAG_META21
-	help
-	  Press y here to enable support for the Meta Level 2 (L2) cache. This
-	  will enable the cache at start up if it hasn't already been enabled
-	  by the bootloader.
-
-	  If the bootloader enables the L2 you must press y here to ensure the
-	  kernel takes the appropriate actions to keep the cache coherent.
-
-config NODES_SHIFT
-	int
-	default "1"
-	depends on NEED_MULTIPLE_NODES
-
-config ARCH_FLATMEM_ENABLE
-	def_bool y
-	depends on !NUMA
-
-config ARCH_SPARSEMEM_ENABLE
-	def_bool y
-	select SPARSEMEM_STATIC
-
-config ARCH_SPARSEMEM_DEFAULT
-	def_bool y
-
-config ARCH_SELECT_MEMORY_MODEL
-	def_bool y
-
-config SYS_SUPPORTS_HUGETLBFS
-	def_bool y
-	depends on METAG_META21_MMU
-
-choice
-	prompt "HugeTLB page size"
-	depends on METAG_META21_MMU && HUGETLB_PAGE
-	default HUGETLB_PAGE_SIZE_1M
-
-config HUGETLB_PAGE_SIZE_8K
-	bool "8kB"
-	depends on PAGE_SIZE_4K
-
-config HUGETLB_PAGE_SIZE_16K
-	bool "16kB"
-	depends on PAGE_SIZE_4K || PAGE_SIZE_8K
-
-config HUGETLB_PAGE_SIZE_32K
-	bool "32kB"
-
-config HUGETLB_PAGE_SIZE_64K
-	bool "64kB"
-
-config HUGETLB_PAGE_SIZE_128K
-	bool "128kB"
-
-config HUGETLB_PAGE_SIZE_256K
-	bool "256kB"
-
-config HUGETLB_PAGE_SIZE_512K
-	bool "512kB"
-
-config HUGETLB_PAGE_SIZE_1M
-	bool "1MB"
-
-config HUGETLB_PAGE_SIZE_2M
-	bool "2MB"
-
-config HUGETLB_PAGE_SIZE_4M
-	bool "4MB"
-
-endchoice
-
-config METAG_COREMEM
-	bool
-	default y if SUSPEND
-
-source "mm/Kconfig"
diff --git a/arch/metag/mm/Makefile b/arch/metag/mm/Makefile
deleted file mode 100644
index 0c7c91ba9fb9..000000000000
--- a/arch/metag/mm/Makefile
+++ /dev/null
@@ -1,20 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the linux Meta-specific parts of the memory manager.
-#
-
-obj-y				+= cache.o
-obj-y				+= extable.o
-obj-y				+= fault.o
-obj-y				+= init.o
-obj-y				+= ioremap.o
-obj-y				+= maccess.o
-
-mmu-y				:= mmu-meta1.o
-mmu-$(CONFIG_METAG_META21_MMU)	:= mmu-meta2.o
-obj-y				+= $(mmu-y)
-
-obj-$(CONFIG_HIGHMEM)		+= highmem.o
-obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o
-obj-$(CONFIG_METAG_L2C)		+= l2cache.o
-obj-$(CONFIG_NUMA)		+= numa.o
diff --git a/arch/metag/mm/cache.c b/arch/metag/mm/cache.c
deleted file mode 100644
index a62285284ab8..000000000000
--- a/arch/metag/mm/cache.c
+++ /dev/null
@@ -1,521 +0,0 @@
-/*
- * arch/metag/mm/cache.c
- *
- * Copyright (C) 2001, 2002, 2005, 2007, 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.
- *
- * Cache control code
- */
-
-#include <linux/export.h>
-#include <linux/io.h>
-#include <asm/cacheflush.h>
-#include <asm/core_reg.h>
-#include <asm/global_lock.h>
-#include <asm/metag_isa.h>
-#include <asm/metag_mem.h>
-#include <asm/metag_regs.h>
-
-#define DEFAULT_CACHE_WAYS_LOG2	2
-
-/*
- * Size of a set in the caches. Initialised for default 16K stride, adjusted
- * according to values passed through TBI global heap segment via LDLK (on ATP)
- * or config registers (on HTP/MTP)
- */
-static int dcache_set_shift = METAG_TBI_CACHE_SIZE_BASE_LOG2
-					- DEFAULT_CACHE_WAYS_LOG2;
-static int icache_set_shift = METAG_TBI_CACHE_SIZE_BASE_LOG2
-					- DEFAULT_CACHE_WAYS_LOG2;
-/*
- * The number of sets in the caches. Initialised for HTP/ATP, adjusted
- * according to NOMMU setting in config registers
- */
-static unsigned char dcache_sets_log2 = DEFAULT_CACHE_WAYS_LOG2;
-static unsigned char icache_sets_log2 = DEFAULT_CACHE_WAYS_LOG2;
-
-#ifndef CONFIG_METAG_META12
-/**
- * metag_lnkget_probe() - Probe whether lnkget/lnkset go around the cache
- */
-static volatile u32 lnkget_testdata[16] __initdata __aligned(64);
-
-#define LNKGET_CONSTANT 0xdeadbeef
-
-static void __init metag_lnkget_probe(void)
-{
-	int temp;
-	long flags;
-
-	/*
-	 * It's conceivable the user has configured a globally coherent cache
-	 * shared with non-Linux hardware threads, so use LOCK2 to prevent them
-	 * from executing and causing cache eviction during the test.
-	 */
-	__global_lock2(flags);
-
-	/* read a value to bring it into the cache */
-	(void)lnkget_testdata[0];
-	lnkget_testdata[0] = 0;
-
-	/* lnkget/lnkset it to modify it */
-	asm volatile(
-		"1:	LNKGETD %0, [%1]\n"
-		"	LNKSETD [%1], %2\n"
-		"	DEFR	%0, TXSTAT\n"
-		"	ANDT	%0, %0, #HI(0x3f000000)\n"
-		"	CMPT	%0, #HI(0x02000000)\n"
-		"	BNZ	1b\n"
-		: "=&d" (temp)
-		: "da" (&lnkget_testdata[0]), "bd" (LNKGET_CONSTANT)
-		: "cc");
-
-	/* re-read it to see if the cached value changed */
-	temp = lnkget_testdata[0];
-
-	__global_unlock2(flags);
-
-	/* flush the cache line to fix any incoherency */
-	__builtin_dcache_flush((void *)&lnkget_testdata[0]);
-
-#if defined(CONFIG_METAG_LNKGET_AROUND_CACHE)
-	/* if the cache is right, LNKGET_AROUND_CACHE is unnecessary */
-	if (temp == LNKGET_CONSTANT)
-		pr_info("LNKGET/SET go through cache but CONFIG_METAG_LNKGET_AROUND_CACHE=y\n");
-#elif defined(CONFIG_METAG_ATOMICITY_LNKGET)
-	/*
-	 * if the cache is wrong, LNKGET_AROUND_CACHE is really necessary
-	 * because the kernel is configured to use LNKGET/SET for atomicity
-	 */
-	WARN(temp != LNKGET_CONSTANT,
-	     "LNKGET/SET go around cache but CONFIG_METAG_LNKGET_AROUND_CACHE=n\n"
-	     "Expect kernel failure as it's used for atomicity primitives\n");
-#elif defined(CONFIG_SMP)
-	/*
-	 * if the cache is wrong, LNKGET_AROUND_CACHE should be used or the
-	 * gateway page won't flush and userland could break.
-	 */
-	WARN(temp != LNKGET_CONSTANT,
-	     "LNKGET/SET go around cache but CONFIG_METAG_LNKGET_AROUND_CACHE=n\n"
-	     "Expect userland failure as it's used for user gateway page\n");
-#else
-	/*
-	 * if the cache is wrong, LNKGET_AROUND_CACHE is set wrong, but it
-	 * doesn't actually matter as it doesn't have any effect on !SMP &&
-	 * !ATOMICITY_LNKGET.
-	 */
-	if (temp != LNKGET_CONSTANT)
-		pr_warn("LNKGET/SET go around cache but CONFIG_METAG_LNKGET_AROUND_CACHE=n\n");
-#endif
-}
-#endif /* !CONFIG_METAG_META12 */
-
-/**
- * metag_cache_probe() - Probe L1 cache configuration.
- *
- * Probe the L1 cache configuration to aid the L1 physical cache flushing
- * functions.
- */
-void __init metag_cache_probe(void)
-{
-#ifndef CONFIG_METAG_META12
-	int coreid = metag_in32(METAC_CORE_ID);
-	int config = metag_in32(METAC_CORE_CONFIG2);
-	int cfgcache = coreid & METAC_COREID_CFGCACHE_BITS;
-
-	if (cfgcache == METAC_COREID_CFGCACHE_TYPE0 ||
-	    cfgcache == METAC_COREID_CFGCACHE_PRIVNOMMU) {
-		icache_sets_log2 = 1;
-		dcache_sets_log2 = 1;
-	}
-
-	/* For normal size caches, the smallest size is 4Kb.
-	   For small caches, the smallest size is 64b */
-	icache_set_shift = (config & METAC_CORECFG2_ICSMALL_BIT)
-				? 6 : 12;
-	icache_set_shift += (config & METAC_CORE_C2ICSZ_BITS)
-				>> METAC_CORE_C2ICSZ_S;
-	icache_set_shift -= icache_sets_log2;
-
-	dcache_set_shift = (config & METAC_CORECFG2_DCSMALL_BIT)
-				? 6 : 12;
-	dcache_set_shift += (config & METAC_CORECFG2_DCSZ_BITS)
-				>> METAC_CORECFG2_DCSZ_S;
-	dcache_set_shift -= dcache_sets_log2;
-
-	metag_lnkget_probe();
-#else
-	/* Extract cache sizes from global heap segment */
-	unsigned long val, u;
-	int width, shift, addend;
-	PTBISEG seg;
-
-	seg = __TBIFindSeg(NULL, TBID_SEG(TBID_THREAD_GLOBAL,
-					  TBID_SEGSCOPE_GLOBAL,
-					  TBID_SEGTYPE_HEAP));
-	if (seg != NULL) {
-		val = seg->Data[1];
-
-		/* Work out width of I-cache size bit-field */
-		u = ((unsigned long) METAG_TBI_ICACHE_SIZE_BITS)
-		       >> METAG_TBI_ICACHE_SIZE_S;
-		width = 0;
-		while (u & 1) {
-			width++;
-			u >>= 1;
-		}
-		/* Extract sign-extended size addend value */
-		shift = 32 - (METAG_TBI_ICACHE_SIZE_S + width);
-		addend = (long) ((val & METAG_TBI_ICACHE_SIZE_BITS)
-				 << shift)
-			>> (shift + METAG_TBI_ICACHE_SIZE_S);
-		/* Now calculate I-cache set size */
-		icache_set_shift = (METAG_TBI_CACHE_SIZE_BASE_LOG2
-				    - DEFAULT_CACHE_WAYS_LOG2)
-					+ addend;
-
-		/* Similarly for D-cache */
-		u = ((unsigned long) METAG_TBI_DCACHE_SIZE_BITS)
-		       >> METAG_TBI_DCACHE_SIZE_S;
-		width = 0;
-		while (u & 1) {
-			width++;
-			u >>= 1;
-		}
-		shift = 32 - (METAG_TBI_DCACHE_SIZE_S + width);
-		addend = (long) ((val & METAG_TBI_DCACHE_SIZE_BITS)
-				 << shift)
-			>> (shift + METAG_TBI_DCACHE_SIZE_S);
-		dcache_set_shift = (METAG_TBI_CACHE_SIZE_BASE_LOG2
-				    - DEFAULT_CACHE_WAYS_LOG2)
-					+ addend;
-	}
-#endif
-}
-
-static void metag_phys_data_cache_flush(const void *start)
-{
-	unsigned long flush0, flush1, flush2, flush3;
-	int loops, step;
-	int thread;
-	int part, offset;
-	int set_shift;
-
-	/* Use a sequence of writes to flush the cache region requested */
-	thread = (__core_reg_get(TXENABLE) & TXENABLE_THREAD_BITS)
-					  >> TXENABLE_THREAD_S;
-
-	/* Cache is broken into sets which lie in contiguous RAMs */
-	set_shift = dcache_set_shift;
-
-	/* Move to the base of the physical cache flush region */
-	flush0 = LINSYSCFLUSH_DCACHE_LINE;
-	step   = 64;
-
-	/* Get partition data for this thread */
-	part = metag_in32(SYSC_DCPART0 +
-			      (SYSC_xCPARTn_STRIDE * thread));
-
-	if ((int)start < 0)
-		/* Access Global vs Local partition */
-		part >>= SYSC_xCPARTG_AND_S
-			- SYSC_xCPARTL_AND_S;
-
-	/* Extract offset and move SetOff */
-	offset = (part & SYSC_xCPARTL_OR_BITS)
-			>> SYSC_xCPARTL_OR_S;
-	flush0 += (offset << (set_shift - 4));
-
-	/* Shrink size */
-	part = (part & SYSC_xCPARTL_AND_BITS)
-			>> SYSC_xCPARTL_AND_S;
-	loops = ((part + 1) << (set_shift - 4));
-
-	/* Reduce loops by step of cache line size */
-	loops /= step;
-
-	flush1 = flush0 + (1 << set_shift);
-	flush2 = flush0 + (2 << set_shift);
-	flush3 = flush0 + (3 << set_shift);
-
-	if (dcache_sets_log2 == 1) {
-		flush2 = flush1;
-		flush3 = flush1 + step;
-		flush1 = flush0 + step;
-		step  <<= 1;
-		loops >>= 1;
-	}
-
-	/* Clear loops ways in cache */
-	while (loops-- != 0) {
-		/* Clear the ways. */
-#if 0
-		/*
-		 * GCC doesn't generate very good code for this so we
-		 * provide inline assembly instead.
-		 */
-		metag_out8(0, flush0);
-		metag_out8(0, flush1);
-		metag_out8(0, flush2);
-		metag_out8(0, flush3);
-
-		flush0 += step;
-		flush1 += step;
-		flush2 += step;
-		flush3 += step;
-#else
-		asm volatile (
-			"SETB\t[%0+%4++],%5\n"
-			"SETB\t[%1+%4++],%5\n"
-			"SETB\t[%2+%4++],%5\n"
-			"SETB\t[%3+%4++],%5\n"
-			: "+e" (flush0),
-			  "+e" (flush1),
-			  "+e" (flush2),
-			  "+e" (flush3)
-			: "e" (step), "a" (0));
-#endif
-	}
-}
-
-void metag_data_cache_flush_all(const void *start)
-{
-	if ((metag_in32(SYSC_CACHE_MMU_CONFIG) & SYSC_CMMUCFG_DC_ON_BIT) == 0)
-		/* No need to flush the data cache it's not actually enabled */
-		return;
-
-	metag_phys_data_cache_flush(start);
-}
-
-void metag_data_cache_flush(const void *start, int bytes)
-{
-	unsigned long flush0;
-	int loops, step;
-
-	if ((metag_in32(SYSC_CACHE_MMU_CONFIG) & SYSC_CMMUCFG_DC_ON_BIT) == 0)
-		/* No need to flush the data cache it's not actually enabled */
-		return;
-
-	if (bytes >= 4096) {
-		metag_phys_data_cache_flush(start);
-		return;
-	}
-
-	/* Use linear cache flush mechanism on META IP */
-	flush0 = (int)start;
-	loops  = ((int)start & (DCACHE_LINE_BYTES - 1)) + bytes +
-					(DCACHE_LINE_BYTES - 1);
-	loops  >>= DCACHE_LINE_S;
-
-#define PRIM_FLUSH(addr, offset) do {			\
-	int __addr = ((int) (addr)) + ((offset) * 64);	\
-	__builtin_dcache_flush((void *)(__addr));	\
-	} while (0)
-
-#define LOOP_INC (4*64)
-
-	do {
-		/* By default stop */
-		step = 0;
-
-		switch (loops) {
-		/* Drop Thru Cases! */
-		default:
-			PRIM_FLUSH(flush0, 3);
-			loops -= 4;
-			step = 1;
-		case 3:
-			PRIM_FLUSH(flush0, 2);
-		case 2:
-			PRIM_FLUSH(flush0, 1);
-		case 1:
-			PRIM_FLUSH(flush0, 0);
-			flush0 += LOOP_INC;
-		case 0:
-			break;
-		}
-	} while (step);
-}
-EXPORT_SYMBOL(metag_data_cache_flush);
-
-static void metag_phys_code_cache_flush(const void *start, int bytes)
-{
-	unsigned long flush0, flush1, flush2, flush3, end_set;
-	int loops, step;
-	int thread;
-	int set_shift, set_size;
-	int part, offset;
-
-	/* Use a sequence of writes to flush the cache region requested */
-	thread = (__core_reg_get(TXENABLE) & TXENABLE_THREAD_BITS)
-					  >> TXENABLE_THREAD_S;
-	set_shift = icache_set_shift;
-
-	/* Move to the base of the physical cache flush region */
-	flush0 = LINSYSCFLUSH_ICACHE_LINE;
-	step   = 64;
-
-	/* Get partition code for this thread */
-	part = metag_in32(SYSC_ICPART0 +
-			  (SYSC_xCPARTn_STRIDE * thread));
-
-	if ((int)start < 0)
-		/* Access Global vs Local partition */
-		part >>= SYSC_xCPARTG_AND_S-SYSC_xCPARTL_AND_S;
-
-	/* Extract offset and move SetOff */
-	offset = (part & SYSC_xCPARTL_OR_BITS)
-			>> SYSC_xCPARTL_OR_S;
-	flush0 += (offset << (set_shift - 4));
-
-	/* Shrink size */
-	part = (part & SYSC_xCPARTL_AND_BITS)
-			>> SYSC_xCPARTL_AND_S;
-	loops = ((part + 1) << (set_shift - 4));
-
-	/* Where does the Set end? */
-	end_set = flush0 + loops;
-	set_size = loops;
-
-#ifdef CONFIG_METAG_META12
-	if ((bytes < 4096) && (bytes < loops)) {
-		/* Unreachable on HTP/MTP */
-		/* Only target the sets that could be relavent */
-		flush0 += (loops - step) & ((int) start);
-		loops = (((int) start) & (step-1)) + bytes + step - 1;
-	}
-#endif
-
-	/* Reduce loops by step of cache line size */
-	loops /= step;
-
-	flush1 = flush0 + (1<<set_shift);
-	flush2 = flush0 + (2<<set_shift);
-	flush3 = flush0 + (3<<set_shift);
-
-	if (icache_sets_log2 == 1) {
-		flush2 = flush1;
-		flush3 = flush1 + step;
-		flush1 = flush0 + step;
-#if 0
-		/* flush0 will stop one line early in this case
-		 * (flush1 will do the final line).
-		 * However we don't correct end_set here at the moment
-		 * because it will never wrap on HTP/MTP
-		 */
-		end_set -= step;
-#endif
-		step  <<= 1;
-		loops >>= 1;
-	}
-
-	/* Clear loops ways in cache */
-	while (loops-- != 0) {
-#if 0
-		/*
-		 * GCC doesn't generate very good code for this so we
-		 * provide inline assembly instead.
-		 */
-		/* Clear the ways */
-		metag_out8(0, flush0);
-		metag_out8(0, flush1);
-		metag_out8(0, flush2);
-		metag_out8(0, flush3);
-
-		flush0 += step;
-		flush1 += step;
-		flush2 += step;
-		flush3 += step;
-#else
-		asm volatile (
-			"SETB\t[%0+%4++],%5\n"
-			"SETB\t[%1+%4++],%5\n"
-			"SETB\t[%2+%4++],%5\n"
-			"SETB\t[%3+%4++],%5\n"
-			: "+e" (flush0),
-			  "+e" (flush1),
-			  "+e" (flush2),
-			  "+e" (flush3)
-			: "e" (step), "a" (0));
-#endif
-
-		if (flush0 == end_set) {
-			/* Wrap within Set 0 */
-			flush0 -= set_size;
-			flush1 -= set_size;
-			flush2 -= set_size;
-			flush3 -= set_size;
-		}
-	}
-}
-
-void metag_code_cache_flush_all(const void *start)
-{
-	if ((metag_in32(SYSC_CACHE_MMU_CONFIG) & SYSC_CMMUCFG_IC_ON_BIT) == 0)
-		/* No need to flush the code cache it's not actually enabled */
-		return;
-
-	metag_phys_code_cache_flush(start, 4096);
-}
-EXPORT_SYMBOL(metag_code_cache_flush_all);
-
-void metag_code_cache_flush(const void *start, int bytes)
-{
-#ifndef CONFIG_METAG_META12
-	void *flush;
-	int loops, step;
-#endif /* !CONFIG_METAG_META12 */
-
-	if ((metag_in32(SYSC_CACHE_MMU_CONFIG) & SYSC_CMMUCFG_IC_ON_BIT) == 0)
-		/* No need to flush the code cache it's not actually enabled */
-		return;
-
-#ifdef CONFIG_METAG_META12
-	/* CACHEWD isn't available on Meta1, so always do full cache flush */
-	metag_phys_code_cache_flush(start, bytes);
-
-#else /* CONFIG_METAG_META12 */
-	/* If large size do full physical cache flush */
-	if (bytes >= 4096) {
-		metag_phys_code_cache_flush(start, bytes);
-		return;
-	}
-
-	/* Use linear cache flush mechanism on META IP */
-	flush = (void *)((int)start & ~(ICACHE_LINE_BYTES-1));
-	loops  = ((int)start & (ICACHE_LINE_BYTES-1)) + bytes +
-		(ICACHE_LINE_BYTES-1);
-	loops  >>= ICACHE_LINE_S;
-
-#define PRIM_IFLUSH(addr, offset) \
-	__builtin_meta2_cachewd(((addr) + ((offset) * 64)), CACHEW_ICACHE_BIT)
-
-#define LOOP_INC (4*64)
-
-	do {
-		/* By default stop */
-		step = 0;
-
-		switch (loops) {
-		/* Drop Thru Cases! */
-		default:
-			PRIM_IFLUSH(flush, 3);
-			loops -= 4;
-			step = 1;
-		case 3:
-			PRIM_IFLUSH(flush, 2);
-		case 2:
-			PRIM_IFLUSH(flush, 1);
-		case 1:
-			PRIM_IFLUSH(flush, 0);
-			flush += LOOP_INC;
-		case 0:
-			break;
-		}
-	} while (step);
-#endif /* !CONFIG_METAG_META12 */
-}
-EXPORT_SYMBOL(metag_code_cache_flush);
diff --git a/arch/metag/mm/extable.c b/arch/metag/mm/extable.c
deleted file mode 100644
index 9b92d3ad7f9c..000000000000
--- a/arch/metag/mm/extable.c
+++ /dev/null
@@ -1,15 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/extable.h>
-#include <linux/uaccess.h>
-
-int fixup_exception(struct pt_regs *regs)
-{
-	const struct exception_table_entry *fixup;
-	unsigned long pc = instruction_pointer(regs);
-
-	fixup = search_exception_tables(pc);
-	if (fixup)
-		regs->ctx.CurrPC = fixup->fixup;
-
-	return fixup != NULL;
-}
diff --git a/arch/metag/mm/fault.c b/arch/metag/mm/fault.c
deleted file mode 100644
index de54fe686080..000000000000
--- a/arch/metag/mm/fault.c
+++ /dev/null
@@ -1,247 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  Meta page fault handling.
- *
- *  Copyright (C) 2005-2012 Imagination Technologies Ltd.
- */
-
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/ptrace.h>
-#include <linux/sched/debug.h>
-#include <linux/interrupt.h>
-#include <linux/uaccess.h>
-
-#include <asm/tlbflush.h>
-#include <asm/mmu.h>
-#include <asm/traps.h>
-
-/* Clear any pending catch buffer state. */
-static void clear_cbuf_entry(struct pt_regs *regs, unsigned long addr,
-			     unsigned int trapno)
-{
-	PTBICTXEXTCB0 cbuf = regs->extcb0;
-
-	switch (trapno) {
-		/* Instruction fetch faults leave no catch buffer state. */
-	case TBIXXF_SIGNUM_IGF:
-	case TBIXXF_SIGNUM_IPF:
-		return;
-	default:
-		if (cbuf[0].CBAddr == addr) {
-			cbuf[0].CBAddr = 0;
-			cbuf[0].CBFlags &= ~TXCATCH0_FAULT_BITS;
-
-			/* And, as this is the ONLY catch entry, we
-			 * need to clear the cbuf bit from the context!
-			 */
-			regs->ctx.SaveMask &= ~(TBICTX_CBUF_BIT |
-						TBICTX_XCBF_BIT);
-
-			return;
-		}
-		pr_err("Failed to clear cbuf entry!\n");
-	}
-}
-
-int show_unhandled_signals = 1;
-
-int do_page_fault(struct pt_regs *regs, unsigned long address,
-		  unsigned int write_access, unsigned int trapno)
-{
-	struct task_struct *tsk;
-	struct mm_struct *mm;
-	struct vm_area_struct *vma, *prev_vma;
-	siginfo_t info;
-	int fault;
-	unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
-
-	tsk = current;
-
-	if ((address >= VMALLOC_START) && (address < VMALLOC_END)) {
-		/*
-		 * Synchronize this task's top level page-table
-		 * with the 'reference' page table.
-		 *
-		 * Do _not_ use "tsk" here. We might be inside
-		 * an interrupt in the middle of a task switch..
-		 */
-		int offset = pgd_index(address);
-		pgd_t *pgd, *pgd_k;
-		pud_t *pud, *pud_k;
-		pmd_t *pmd, *pmd_k;
-		pte_t *pte_k;
-
-		pgd = ((pgd_t *)mmu_get_base()) + offset;
-		pgd_k = swapper_pg_dir + offset;
-
-		/* This will never happen with the folded page table. */
-		if (!pgd_present(*pgd)) {
-			if (!pgd_present(*pgd_k))
-				goto bad_area_nosemaphore;
-			set_pgd(pgd, *pgd_k);
-			return 0;
-		}
-
-		pud = pud_offset(pgd, address);
-		pud_k = pud_offset(pgd_k, address);
-		if (!pud_present(*pud_k))
-			goto bad_area_nosemaphore;
-		set_pud(pud, *pud_k);
-
-		pmd = pmd_offset(pud, address);
-		pmd_k = pmd_offset(pud_k, address);
-		if (!pmd_present(*pmd_k))
-			goto bad_area_nosemaphore;
-		set_pmd(pmd, *pmd_k);
-
-		pte_k = pte_offset_kernel(pmd_k, address);
-		if (!pte_present(*pte_k))
-			goto bad_area_nosemaphore;
-
-		/* May only be needed on Chorus2 */
-		flush_tlb_all();
-		return 0;
-	}
-
-	mm = tsk->mm;
-
-	if (faulthandler_disabled() || !mm)
-		goto no_context;
-
-	if (user_mode(regs))
-		flags |= FAULT_FLAG_USER;
-retry:
-	down_read(&mm->mmap_sem);
-
-	vma = find_vma_prev(mm, address, &prev_vma);
-
-	if (!vma || address < vma->vm_start)
-		goto check_expansion;
-
-good_area:
-	if (write_access) {
-		if (!(vma->vm_flags & VM_WRITE))
-			goto bad_area;
-		flags |= FAULT_FLAG_WRITE;
-	} else {
-		if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))
-			goto bad_area;
-	}
-
-	/*
-	 * If for any reason at all we couldn't handle the fault,
-	 * make sure we exit gracefully rather than endlessly redo
-	 * the fault.
-	 */
-	fault = handle_mm_fault(vma, address, flags);
-
-	if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
-		return 0;
-
-	if (unlikely(fault & VM_FAULT_ERROR)) {
-		if (fault & VM_FAULT_OOM)
-			goto out_of_memory;
-		else if (fault & VM_FAULT_SIGSEGV)
-			goto bad_area;
-		else if (fault & VM_FAULT_SIGBUS)
-			goto do_sigbus;
-		BUG();
-	}
-	if (flags & FAULT_FLAG_ALLOW_RETRY) {
-		if (fault & VM_FAULT_MAJOR)
-			tsk->maj_flt++;
-		else
-			tsk->min_flt++;
-		if (fault & VM_FAULT_RETRY) {
-			flags &= ~FAULT_FLAG_ALLOW_RETRY;
-			flags |= FAULT_FLAG_TRIED;
-
-			/*
-			 * No need to up_read(&mm->mmap_sem) as we would
-			 * have already released it in __lock_page_or_retry
-			 * in mm/filemap.c.
-			 */
-
-			goto retry;
-		}
-	}
-
-	up_read(&mm->mmap_sem);
-	return 0;
-
-check_expansion:
-	vma = prev_vma;
-	if (vma && (expand_stack(vma, address) == 0))
-		goto good_area;
-
-bad_area:
-	up_read(&mm->mmap_sem);
-
-bad_area_nosemaphore:
-	if (user_mode(regs)) {
-		info.si_signo = SIGSEGV;
-		info.si_errno = 0;
-		info.si_code = SEGV_MAPERR;
-		info.si_addr = (__force void __user *)address;
-		info.si_trapno = trapno;
-
-		if (show_unhandled_signals && unhandled_signal(tsk, SIGSEGV) &&
-		    printk_ratelimit()) {
-			printk("%s%s[%d]: segfault at %lx pc %08x sp %08x write %d trap %#x (%s)",
-			       task_pid_nr(tsk) > 1 ? KERN_INFO : KERN_EMERG,
-			       tsk->comm, task_pid_nr(tsk), address,
-			       regs->ctx.CurrPC, regs->ctx.AX[0].U0,
-			       write_access, trapno, trap_name(trapno));
-			print_vma_addr(" in ", regs->ctx.CurrPC);
-			print_vma_addr(" rtp in ", regs->ctx.DX[4].U1);
-			printk("\n");
-			show_regs(regs);
-		}
-		force_sig_info(SIGSEGV, &info, tsk);
-		return 1;
-	}
-	goto no_context;
-
-do_sigbus:
-	up_read(&mm->mmap_sem);
-
-	/*
-	 * Send a sigbus, regardless of whether we were in kernel
-	 * or user mode.
-	 */
-	info.si_signo = SIGBUS;
-	info.si_errno = 0;
-	info.si_code = BUS_ADRERR;
-	info.si_addr = (__force void __user *)address;
-	info.si_trapno = trapno;
-	force_sig_info(SIGBUS, &info, tsk);
-
-	/* Kernel mode? Handle exceptions or die */
-	if (!user_mode(regs))
-		goto no_context;
-
-	return 1;
-
-	/*
-	 * We ran out of memory, or some other thing happened to us that made
-	 * us unable to handle the page fault gracefully.
-	 */
-out_of_memory:
-	up_read(&mm->mmap_sem);
-	if (user_mode(regs)) {
-		pagefault_out_of_memory();
-		return 1;
-	}
-
-no_context:
-	/* Are we prepared to handle this kernel fault?  */
-	if (fixup_exception(regs)) {
-		clear_cbuf_entry(regs, address, trapno);
-		return 1;
-	}
-
-	die("Oops", regs, (write_access << 15) | trapno, address);
-	do_exit(SIGKILL);
-}
diff --git a/arch/metag/mm/highmem.c b/arch/metag/mm/highmem.c
deleted file mode 100644
index 83527fc7c8a7..000000000000
--- a/arch/metag/mm/highmem.c
+++ /dev/null
@@ -1,122 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-#include <linux/highmem.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/interrupt.h>
-#include <asm/fixmap.h>
-#include <asm/tlbflush.h>
-
-static pte_t *kmap_pte;
-
-unsigned long highstart_pfn, highend_pfn;
-
-void *kmap(struct page *page)
-{
-	might_sleep();
-	if (!PageHighMem(page))
-		return page_address(page);
-	return kmap_high(page);
-}
-EXPORT_SYMBOL(kmap);
-
-void kunmap(struct page *page)
-{
-	BUG_ON(in_interrupt());
-	if (!PageHighMem(page))
-		return;
-	kunmap_high(page);
-}
-EXPORT_SYMBOL(kunmap);
-
-/*
- * kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because
- * no global lock is needed and because the kmap code must perform a global TLB
- * invalidation when the kmap pool wraps.
- *
- * However when holding an atomic kmap is is not legal to sleep, so atomic
- * kmaps are appropriate for short, tight code paths only.
- */
-
-void *kmap_atomic(struct page *page)
-{
-	enum fixed_addresses idx;
-	unsigned long vaddr;
-	int type;
-
-	preempt_disable();
-	pagefault_disable();
-	if (!PageHighMem(page))
-		return page_address(page);
-
-	type = kmap_atomic_idx_push();
-	idx = type + KM_TYPE_NR * smp_processor_id();
-	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-#ifdef CONFIG_DEBUG_HIGHMEM
-	BUG_ON(!pte_none(*(kmap_pte - idx)));
-#endif
-	set_pte(kmap_pte - idx, mk_pte(page, PAGE_KERNEL));
-
-	return (void *)vaddr;
-}
-EXPORT_SYMBOL(kmap_atomic);
-
-void __kunmap_atomic(void *kvaddr)
-{
-	unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
-	int idx, type;
-
-	if (kvaddr >= (void *)FIXADDR_START) {
-		type = kmap_atomic_idx();
-		idx = type + KM_TYPE_NR * smp_processor_id();
-
-		/*
-		 * Force other mappings to Oops if they'll try to access this
-		 * pte without first remap it.  Keeping stale mappings around
-		 * is a bad idea also, in case the page changes cacheability
-		 * attributes or becomes a protected page in a hypervisor.
-		 */
-		pte_clear(&init_mm, vaddr, kmap_pte-idx);
-		flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE);
-
-		kmap_atomic_idx_pop();
-	}
-
-	pagefault_enable();
-	preempt_enable();
-}
-EXPORT_SYMBOL(__kunmap_atomic);
-
-/*
- * This is the same as kmap_atomic() but can map memory that doesn't
- * have a struct page associated with it.
- */
-void *kmap_atomic_pfn(unsigned long pfn)
-{
-	enum fixed_addresses idx;
-	unsigned long vaddr;
-	int type;
-
-	preempt_disable();
-	pagefault_disable();
-
-	type = kmap_atomic_idx_push();
-	idx = type + KM_TYPE_NR * smp_processor_id();
-	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-#ifdef CONFIG_DEBUG_HIGHMEM
-	BUG_ON(!pte_none(*(kmap_pte - idx)));
-#endif
-	set_pte(kmap_pte - idx, pfn_pte(pfn, PAGE_KERNEL));
-	flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE);
-
-	return (void *)vaddr;
-}
-
-void __init kmap_init(void)
-{
-	unsigned long kmap_vstart;
-
-	/* cache the first kmap pte */
-	kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN);
-	kmap_pte = kmap_get_fixmap_pte(kmap_vstart);
-}
diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c
deleted file mode 100644
index 012ee4c80dc7..000000000000
--- a/arch/metag/mm/hugetlbpage.c
+++ /dev/null
@@ -1,251 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * arch/metag/mm/hugetlbpage.c
- *
- * METAG HugeTLB page support.
- *
- * Cloned from SuperH
- *
- * Cloned from sparc64 by Paul Mundt.
- *
- * Copyright (C) 2002, 2003 David S. Miller (davem@redhat.com)
- */
-
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/hugetlb.h>
-#include <linux/pagemap.h>
-#include <linux/sysctl.h>
-
-#include <asm/mman.h>
-#include <asm/pgalloc.h>
-#include <asm/tlb.h>
-#include <asm/tlbflush.h>
-#include <asm/cacheflush.h>
-
-/*
- * If the arch doesn't supply something else, assume that hugepage
- * size aligned regions are ok without further preparation.
- */
-int prepare_hugepage_range(struct file *file, unsigned long addr,
-						unsigned long len)
-{
-	struct mm_struct *mm = current->mm;
-	struct hstate *h = hstate_file(file);
-	struct vm_area_struct *vma;
-
-	if (len & ~huge_page_mask(h))
-		return -EINVAL;
-	if (addr & ~huge_page_mask(h))
-		return -EINVAL;
-	if (TASK_SIZE - len < addr)
-		return -EINVAL;
-
-	vma = find_vma(mm, ALIGN_HUGEPT(addr));
-	if (vma && !(vma->vm_flags & MAP_HUGETLB))
-		return -EINVAL;
-
-	vma = find_vma(mm, addr);
-	if (vma) {
-		if (addr + len > vma->vm_start)
-			return -EINVAL;
-		if (!(vma->vm_flags & MAP_HUGETLB) &&
-		    (ALIGN_HUGEPT(addr + len) > vma->vm_start))
-			return -EINVAL;
-	}
-	return 0;
-}
-
-pte_t *huge_pte_alloc(struct mm_struct *mm,
-			unsigned long addr, unsigned long sz)
-{
-	pgd_t *pgd;
-	pud_t *pud;
-	pmd_t *pmd;
-	pte_t *pte;
-
-	pgd = pgd_offset(mm, addr);
-	pud = pud_offset(pgd, addr);
-	pmd = pmd_offset(pud, addr);
-	pte = pte_alloc_map(mm, pmd, addr);
-	pgd->pgd &= ~_PAGE_SZ_MASK;
-	pgd->pgd |= _PAGE_SZHUGE;
-
-	return pte;
-}
-
-pte_t *huge_pte_offset(struct mm_struct *mm,
-		       unsigned long addr, unsigned long sz)
-{
-	pgd_t *pgd;
-	pud_t *pud;
-	pmd_t *pmd;
-	pte_t *pte = NULL;
-
-	pgd = pgd_offset(mm, addr);
-	pud = pud_offset(pgd, addr);
-	pmd = pmd_offset(pud, addr);
-	pte = pte_offset_kernel(pmd, addr);
-
-	return pte;
-}
-
-int pmd_huge(pmd_t pmd)
-{
-	return pmd_page_shift(pmd) > PAGE_SHIFT;
-}
-
-int pud_huge(pud_t pud)
-{
-	return 0;
-}
-
-struct page *follow_huge_pmd(struct mm_struct *mm, unsigned long address,
-			     pmd_t *pmd, int write)
-{
-	return NULL;
-}
-
-#ifdef HAVE_ARCH_HUGETLB_UNMAPPED_AREA
-
-/*
- * Look for an unmapped area starting after another hugetlb vma.
- * There are guaranteed to be no huge pte's spare if all the huge pages are
- * full size (4MB), so in that case compile out this search.
- */
-#if HPAGE_SHIFT == HUGEPT_SHIFT
-static inline unsigned long
-hugetlb_get_unmapped_area_existing(unsigned long len)
-{
-	return 0;
-}
-#else
-static unsigned long
-hugetlb_get_unmapped_area_existing(unsigned long len)
-{
-	struct mm_struct *mm = current->mm;
-	struct vm_area_struct *vma;
-	unsigned long start_addr, addr;
-	int after_huge;
-
-	if (mm->context.part_huge) {
-		start_addr = mm->context.part_huge;
-		after_huge = 1;
-	} else {
-		start_addr = TASK_UNMAPPED_BASE;
-		after_huge = 0;
-	}
-new_search:
-	addr = start_addr;
-
-	for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
-		if ((!vma && !after_huge) || TASK_SIZE - len < addr) {
-			/*
-			 * Start a new search - just in case we missed
-			 * some holes.
-			 */
-			if (start_addr != TASK_UNMAPPED_BASE) {
-				start_addr = TASK_UNMAPPED_BASE;
-				goto new_search;
-			}
-			return 0;
-		}
-		/* skip ahead if we've aligned right over some vmas */
-		if (vma && vma->vm_end <= addr)
-			continue;
-		/* space before the next vma? */
-		if (after_huge && (!vma || ALIGN_HUGEPT(addr + len)
-			    <= vma->vm_start)) {
-			unsigned long end = addr + len;
-			if (end & HUGEPT_MASK)
-				mm->context.part_huge = end;
-			else if (addr == mm->context.part_huge)
-				mm->context.part_huge = 0;
-			return addr;
-		}
-		if (vma->vm_flags & MAP_HUGETLB) {
-			/* space after a huge vma in 2nd level page table? */
-			if (vma->vm_end & HUGEPT_MASK) {
-				after_huge = 1;
-				/* no need to align to the next PT block */
-				addr = vma->vm_end;
-				continue;
-			}
-		}
-		after_huge = 0;
-		addr = ALIGN_HUGEPT(vma->vm_end);
-	}
-}
-#endif
-
-/* Do a full search to find an area without any nearby normal pages. */
-static unsigned long
-hugetlb_get_unmapped_area_new_pmd(unsigned long len)
-{
-	struct vm_unmapped_area_info info;
-
-	info.flags = 0;
-	info.length = len;
-	info.low_limit = TASK_UNMAPPED_BASE;
-	info.high_limit = TASK_SIZE;
-	info.align_mask = PAGE_MASK & HUGEPT_MASK;
-	info.align_offset = 0;
-	return vm_unmapped_area(&info);
-}
-
-unsigned long
-hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
-		unsigned long len, unsigned long pgoff, unsigned long flags)
-{
-	struct hstate *h = hstate_file(file);
-
-	if (len & ~huge_page_mask(h))
-		return -EINVAL;
-	if (len > TASK_SIZE)
-		return -ENOMEM;
-
-	if (flags & MAP_FIXED) {
-		if (prepare_hugepage_range(file, addr, len))
-			return -EINVAL;
-		return addr;
-	}
-
-	if (addr) {
-		addr = ALIGN(addr, huge_page_size(h));
-		if (!prepare_hugepage_range(file, addr, len))
-			return addr;
-	}
-
-	/*
-	 * Look for an existing hugetlb vma with space after it (this is to to
-	 * minimise fragmentation caused by huge pages.
-	 */
-	addr = hugetlb_get_unmapped_area_existing(len);
-	if (addr)
-		return addr;
-
-	/*
-	 * Find an unmapped naturally aligned set of 4MB blocks that we can use
-	 * for huge pages.
-	 */
-	return hugetlb_get_unmapped_area_new_pmd(len);
-}
-
-#endif /*HAVE_ARCH_HUGETLB_UNMAPPED_AREA*/
-
-/* necessary for boot time 4MB huge page allocation */
-static __init int setup_hugepagesz(char *opt)
-{
-	unsigned long ps = memparse(opt, &opt);
-	if (ps == (1 << HPAGE_SHIFT)) {
-		hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT);
-	} else {
-		hugetlb_bad_size();
-		pr_err("hugepagesz: Unsupported page size %lu M\n",
-		       ps >> 20);
-		return 0;
-	}
-	return 1;
-}
-__setup("hugepagesz=", setup_hugepagesz);
diff --git a/arch/metag/mm/init.c b/arch/metag/mm/init.c
deleted file mode 100644
index 0e2ca9058998..000000000000
--- a/arch/metag/mm/init.c
+++ /dev/null
@@ -1,408 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  Copyright (C) 2005,2006,2007,2008,2009,2010 Imagination Technologies
- *
- */
-
-#include <linux/export.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/pagemap.h>
-#include <linux/percpu.h>
-#include <linux/memblock.h>
-#include <linux/initrd.h>
-#include <linux/sched/task.h>
-
-#include <asm/setup.h>
-#include <asm/page.h>
-#include <asm/pgalloc.h>
-#include <asm/mmu.h>
-#include <asm/mmu_context.h>
-#include <asm/sections.h>
-#include <asm/tlb.h>
-#include <asm/user_gateway.h>
-#include <asm/mmzone.h>
-#include <asm/fixmap.h>
-
-unsigned long pfn_base;
-EXPORT_SYMBOL(pfn_base);
-
-pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_data;
-
-unsigned long empty_zero_page;
-EXPORT_SYMBOL(empty_zero_page);
-
-extern char __user_gateway_start;
-extern char __user_gateway_end;
-
-void *gateway_page;
-
-/*
- * Insert the gateway page into a set of page tables, creating the
- * page tables if necessary.
- */
-static void insert_gateway_page(pgd_t *pgd, unsigned long address)
-{
-	pud_t *pud;
-	pmd_t *pmd;
-	pte_t *pte;
-
-	BUG_ON(!pgd_present(*pgd));
-
-	pud = pud_offset(pgd, address);
-	BUG_ON(!pud_present(*pud));
-
-	pmd = pmd_offset(pud, address);
-	if (!pmd_present(*pmd)) {
-		pte = alloc_bootmem_pages(PAGE_SIZE);
-		set_pmd(pmd, __pmd(_PAGE_TABLE | __pa(pte)));
-	}
-
-	pte = pte_offset_kernel(pmd, address);
-	set_pte(pte, pfn_pte(__pa(gateway_page) >> PAGE_SHIFT, PAGE_READONLY));
-}
-
-/* Alloc and map a page in a known location accessible to userspace. */
-static void __init user_gateway_init(void)
-{
-	unsigned long address = USER_GATEWAY_PAGE;
-	int offset = pgd_index(address);
-	pgd_t *pgd;
-
-	gateway_page = alloc_bootmem_pages(PAGE_SIZE);
-
-	pgd = swapper_pg_dir + offset;
-	insert_gateway_page(pgd, address);
-
-#ifdef CONFIG_METAG_META12
-	/*
-	 * Insert the gateway page into our current page tables even
-	 * though we've already inserted it into our reference page
-	 * table (swapper_pg_dir). This is because with a META1 mmu we
-	 * copy just the user address range and not the gateway page
-	 * entry on context switch, see switch_mmu().
-	 */
-	pgd = (pgd_t *)mmu_get_base() + offset;
-	insert_gateway_page(pgd, address);
-#endif /* CONFIG_METAG_META12 */
-
-	BUG_ON((&__user_gateway_end - &__user_gateway_start) > PAGE_SIZE);
-
-	gateway_page += (address & ~PAGE_MASK);
-
-	memcpy(gateway_page, &__user_gateway_start,
-	       &__user_gateway_end - &__user_gateway_start);
-
-	/*
-	 * We don't need to flush the TLB here, there should be no mapping
-	 * present at boot for this address and only valid mappings are in
-	 * the TLB (apart from on Meta 1.x, but those cached invalid
-	 * mappings should be impossible to hit here).
-	 *
-	 * We don't flush the code cache here even though we have written
-	 * code through the data cache and they may not be coherent. At
-	 * this point we assume there is no stale data in the code cache
-	 * for this address so there is no need to flush.
-	 */
-}
-
-static void __init allocate_pgdat(unsigned int nid)
-{
-	unsigned long start_pfn, end_pfn;
-#ifdef CONFIG_NEED_MULTIPLE_NODES
-	unsigned long phys;
-#endif
-
-	get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
-
-#ifdef CONFIG_NEED_MULTIPLE_NODES
-	phys = __memblock_alloc_base(sizeof(struct pglist_data),
-				SMP_CACHE_BYTES, end_pfn << PAGE_SHIFT);
-	/* Retry with all of system memory */
-	if (!phys)
-		phys = __memblock_alloc_base(sizeof(struct pglist_data),
-					     SMP_CACHE_BYTES,
-					     memblock_end_of_DRAM());
-	if (!phys)
-		panic("Can't allocate pgdat for node %d\n", nid);
-
-	NODE_DATA(nid) = __va(phys);
-	memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
-
-	NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
-#endif
-
-	NODE_DATA(nid)->node_start_pfn = start_pfn;
-	NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
-}
-
-static void __init bootmem_init_one_node(unsigned int nid)
-{
-	unsigned long total_pages, paddr;
-	unsigned long end_pfn;
-	struct pglist_data *p;
-
-	p = NODE_DATA(nid);
-
-	/* Nothing to do.. */
-	if (!p->node_spanned_pages)
-		return;
-
-	end_pfn = pgdat_end_pfn(p);
-#ifdef CONFIG_HIGHMEM
-	if (end_pfn > max_low_pfn)
-		end_pfn = max_low_pfn;
-#endif
-
-	total_pages = bootmem_bootmap_pages(end_pfn - p->node_start_pfn);
-
-	paddr = memblock_alloc(total_pages << PAGE_SHIFT, PAGE_SIZE);
-	if (!paddr)
-		panic("Can't allocate bootmap for nid[%d]\n", nid);
-
-	init_bootmem_node(p, paddr >> PAGE_SHIFT, p->node_start_pfn, end_pfn);
-
-	free_bootmem_with_active_regions(nid, end_pfn);
-
-	/*
-	 * XXX Handle initial reservations for the system memory node
-	 * only for the moment, we'll refactor this later for handling
-	 * reservations in other nodes.
-	 */
-	if (nid == 0) {
-		struct memblock_region *reg;
-
-		/* Reserve the sections we're already using. */
-		for_each_memblock(reserved, reg) {
-			unsigned long size = reg->size;
-
-#ifdef CONFIG_HIGHMEM
-			/* ...but not highmem */
-			if (PFN_DOWN(reg->base) >= highstart_pfn)
-				continue;
-
-			if (PFN_UP(reg->base + size) > highstart_pfn)
-				size = (highstart_pfn - PFN_DOWN(reg->base))
-				       << PAGE_SHIFT;
-#endif
-
-			reserve_bootmem(reg->base, size, BOOTMEM_DEFAULT);
-		}
-	}
-
-	sparse_memory_present_with_active_regions(nid);
-}
-
-static void __init do_init_bootmem(void)
-{
-	struct memblock_region *reg;
-	int i;
-
-	/* Add active regions with valid PFNs. */
-	for_each_memblock(memory, reg) {
-		unsigned long start_pfn, end_pfn;
-		start_pfn = memblock_region_memory_base_pfn(reg);
-		end_pfn = memblock_region_memory_end_pfn(reg);
-		memblock_set_node(PFN_PHYS(start_pfn),
-				  PFN_PHYS(end_pfn - start_pfn),
-				  &memblock.memory, 0);
-	}
-
-	/* All of system RAM sits in node 0 for the non-NUMA case */
-	allocate_pgdat(0);
-	node_set_online(0);
-
-	soc_mem_setup();
-
-	for_each_online_node(i)
-		bootmem_init_one_node(i);
-
-	sparse_init();
-}
-
-extern char _heap_start[];
-
-static void __init init_and_reserve_mem(void)
-{
-	unsigned long start_pfn, heap_start;
-	u64 base = min_low_pfn << PAGE_SHIFT;
-	u64 size = (max_low_pfn << PAGE_SHIFT) - base;
-
-	heap_start = (unsigned long) &_heap_start;
-
-	memblock_add(base, size);
-
-	/*
-	 * Partially used pages are not usable - thus
-	 * we are rounding upwards:
-	 */
-	start_pfn = PFN_UP(__pa(heap_start));
-
-	/*
-	 * Reserve the kernel text.
-	 */
-	memblock_reserve(base, (PFN_PHYS(start_pfn) + PAGE_SIZE - 1) - base);
-
-#ifdef CONFIG_HIGHMEM
-	/*
-	 * Add & reserve highmem, so page structures are initialised.
-	 */
-	base = highstart_pfn << PAGE_SHIFT;
-	size = (highend_pfn << PAGE_SHIFT) - base;
-	if (size) {
-		memblock_add(base, size);
-		memblock_reserve(base, size);
-	}
-#endif
-}
-
-#ifdef CONFIG_HIGHMEM
-/*
- * Ensure we have allocated page tables in swapper_pg_dir for the
- * fixed mappings range from 'start' to 'end'.
- */
-static void __init allocate_pgtables(unsigned long start, unsigned long end)
-{
-	pgd_t *pgd;
-	pmd_t *pmd;
-	pte_t *pte;
-	int i, j;
-	unsigned long vaddr;
-
-	vaddr = start;
-	i = pgd_index(vaddr);
-	j = pmd_index(vaddr);
-	pgd = swapper_pg_dir + i;
-
-	for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
-		pmd = (pmd_t *)pgd;
-		for (; (j < PTRS_PER_PMD) && (vaddr != end); pmd++, j++) {
-			vaddr += PMD_SIZE;
-
-			if (!pmd_none(*pmd))
-				continue;
-
-			pte = (pte_t *)alloc_bootmem_low_pages(PAGE_SIZE);
-			pmd_populate_kernel(&init_mm, pmd, pte);
-		}
-		j = 0;
-	}
-}
-
-static void __init fixedrange_init(void)
-{
-	unsigned long vaddr, end;
-	pgd_t *pgd;
-	pud_t *pud;
-	pmd_t *pmd;
-	pte_t *pte;
-
-	/*
-	 * Fixed mappings:
-	 */
-	vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
-	end = (FIXADDR_TOP + PMD_SIZE - 1) & PMD_MASK;
-	allocate_pgtables(vaddr, end);
-
-	/*
-	 * Permanent kmaps:
-	 */
-	vaddr = PKMAP_BASE;
-	allocate_pgtables(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP);
-
-	pgd = swapper_pg_dir + pgd_index(vaddr);
-	pud = pud_offset(pgd, vaddr);
-	pmd = pmd_offset(pud, vaddr);
-	pte = pte_offset_kernel(pmd, vaddr);
-	pkmap_page_table = pte;
-}
-#endif /* CONFIG_HIGHMEM */
-
-/*
- * paging_init() continues the virtual memory environment setup which
- * was begun by the code in arch/metag/kernel/setup.c.
- */
-void __init paging_init(unsigned long mem_end)
-{
-	unsigned long max_zone_pfns[MAX_NR_ZONES];
-	int nid;
-
-	init_and_reserve_mem();
-
-	memblock_allow_resize();
-
-	memblock_dump_all();
-
-	nodes_clear(node_online_map);
-
-	init_new_context(&init_task, &init_mm);
-
-	memset(swapper_pg_dir, 0, sizeof(swapper_pg_dir));
-
-	do_init_bootmem();
-	mmu_init(mem_end);
-
-#ifdef CONFIG_HIGHMEM
-	fixedrange_init();
-	kmap_init();
-#endif
-
-	/* Initialize the zero page to a bootmem page, already zeroed. */
-	empty_zero_page = (unsigned long)alloc_bootmem_pages(PAGE_SIZE);
-
-	user_gateway_init();
-
-	memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
-
-	for_each_online_node(nid) {
-		pg_data_t *pgdat = NODE_DATA(nid);
-		unsigned long low, start_pfn;
-
-		start_pfn = pgdat->bdata->node_min_pfn;
-		low = pgdat->bdata->node_low_pfn;
-
-		if (max_zone_pfns[ZONE_NORMAL] < low)
-			max_zone_pfns[ZONE_NORMAL] = low;
-
-#ifdef CONFIG_HIGHMEM
-		max_zone_pfns[ZONE_HIGHMEM] = highend_pfn;
-#endif
-		pr_info("Node %u: start_pfn = 0x%lx, low = 0x%lx\n",
-			nid, start_pfn, low);
-	}
-
-	free_area_init_nodes(max_zone_pfns);
-}
-
-void __init mem_init(void)
-{
-#ifdef CONFIG_HIGHMEM
-	unsigned long tmp;
-
-	/*
-	 * Explicitly reset zone->managed_pages because highmem pages are
-	 * freed before calling free_all_bootmem();
-	 */
-	reset_all_zones_managed_pages();
-	for (tmp = highstart_pfn; tmp < highend_pfn; tmp++)
-		free_highmem_page(pfn_to_page(tmp));
-#endif /* CONFIG_HIGHMEM */
-
-	free_all_bootmem();
-	mem_init_print_info(NULL);
-}
-
-void free_initmem(void)
-{
-	free_initmem_default(POISON_FREE_INITMEM);
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
-			   "initrd");
-}
-#endif
diff --git a/arch/metag/mm/ioremap.c b/arch/metag/mm/ioremap.c
deleted file mode 100644
index df2b59cb02eb..000000000000
--- a/arch/metag/mm/ioremap.c
+++ /dev/null
@@ -1,90 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Re-map IO memory to kernel address space so that we can access it.
- * Needed for memory-mapped I/O devices mapped outside our normal DRAM
- * window (that is, all memory-mapped I/O devices).
- *
- * Copyright (C) 1995,1996 Linus Torvalds
- *
- * Meta port based on CRIS-port by Axis Communications AB
- */
-
-#include <linux/vmalloc.h>
-#include <linux/io.h>
-#include <linux/export.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-
-#include <asm/pgtable.h>
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- */
-void __iomem *__ioremap(unsigned long phys_addr, size_t size,
-			unsigned long flags)
-{
-	unsigned long addr;
-	struct vm_struct *area;
-	unsigned long offset, last_addr;
-	pgprot_t prot;
-
-	/* Don't allow wraparound or zero size */
-	last_addr = phys_addr + size - 1;
-	if (!size || last_addr < phys_addr)
-		return NULL;
-
-	/* Custom region addresses are accessible and uncached by default. */
-	if (phys_addr >= LINSYSCUSTOM_BASE &&
-	    phys_addr < (LINSYSCUSTOM_BASE + LINSYSCUSTOM_LIMIT))
-		return (__force void __iomem *) phys_addr;
-
-	/*
-	 * Mappings have to be page-aligned
-	 */
-	offset = phys_addr & ~PAGE_MASK;
-	phys_addr &= PAGE_MASK;
-	size = PAGE_ALIGN(last_addr+1) - phys_addr;
-	prot = __pgprot(_PAGE_PRESENT | _PAGE_WRITE | _PAGE_DIRTY |
-			_PAGE_ACCESSED | _PAGE_KERNEL | _PAGE_CACHE_WIN0 |
-			flags);
-
-	/*
-	 * Ok, go for it..
-	 */
-	area = get_vm_area(size, VM_IOREMAP);
-	if (!area)
-		return NULL;
-	area->phys_addr = phys_addr;
-	addr = (unsigned long) area->addr;
-	if (ioremap_page_range(addr, addr + size, phys_addr, prot)) {
-		vunmap((void *) addr);
-		return NULL;
-	}
-	return (__force void __iomem *) (offset + (char *)addr);
-}
-EXPORT_SYMBOL(__ioremap);
-
-void __iounmap(void __iomem *addr)
-{
-	struct vm_struct *p;
-
-	if ((__force unsigned long)addr >= LINSYSCUSTOM_BASE &&
-	    (__force unsigned long)addr < (LINSYSCUSTOM_BASE +
-					   LINSYSCUSTOM_LIMIT))
-		return;
-
-	p = remove_vm_area((void *)(PAGE_MASK & (unsigned long __force)addr));
-	if (unlikely(!p)) {
-		pr_err("iounmap: bad address %p\n", addr);
-		return;
-	}
-
-	kfree(p);
-}
-EXPORT_SYMBOL(__iounmap);
diff --git a/arch/metag/mm/l2cache.c b/arch/metag/mm/l2cache.c
deleted file mode 100644
index addffc58989c..000000000000
--- a/arch/metag/mm/l2cache.c
+++ /dev/null
@@ -1,193 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-
-#include <asm/l2cache.h>
-#include <asm/metag_isa.h>
-
-/* If non-0, then initialise the L2 cache */
-static int l2cache_init = 1;
-/* If non-0, then initialise the L2 cache prefetch */
-static int l2cache_init_pf = 1;
-
-int l2c_pfenable;
-
-static volatile u32 l2c_testdata[16] __initdata __aligned(64);
-
-static int __init parse_l2cache(char *p)
-{
-	char *cp = p;
-
-	if (get_option(&cp, &l2cache_init) != 1) {
-		pr_err("Bad l2cache parameter (%s)\n", p);
-		return 1;
-	}
-	return 0;
-}
-early_param("l2cache", parse_l2cache);
-
-static int __init parse_l2cache_pf(char *p)
-{
-	char *cp = p;
-
-	if (get_option(&cp, &l2cache_init_pf) != 1) {
-		pr_err("Bad l2cache_pf parameter (%s)\n", p);
-		return 1;
-	}
-	return 0;
-}
-early_param("l2cache_pf", parse_l2cache_pf);
-
-static int __init meta_l2c_setup(void)
-{
-	/*
-	 * If the L2 cache isn't even present, don't do anything, but say so in
-	 * the log.
-	 */
-	if (!meta_l2c_is_present()) {
-		pr_info("L2 Cache: Not present\n");
-		return 0;
-	}
-
-	/*
-	 * Check whether the line size is recognised.
-	 */
-	if (!meta_l2c_linesize()) {
-		pr_warn_once("L2 Cache: unknown line size id (config=0x%08x)\n",
-			     meta_l2c_config());
-	}
-
-	/*
-	 * Initialise state.
-	 */
-	l2c_pfenable = _meta_l2c_pf_is_enabled();
-
-	/*
-	 * Enable the L2 cache and print to log whether it was already enabled
-	 * by the bootloader.
-	 */
-	if (l2cache_init) {
-		pr_info("L2 Cache: Enabling... ");
-		if (meta_l2c_enable())
-			pr_cont("already enabled\n");
-		else
-			pr_cont("done\n");
-	} else {
-		pr_info("L2 Cache: Not enabling\n");
-	}
-
-	/*
-	 * Enable L2 cache prefetch.
-	 */
-	if (l2cache_init_pf) {
-		pr_info("L2 Cache: Enabling prefetch... ");
-		if (meta_l2c_pf_enable(1))
-			pr_cont("already enabled\n");
-		else
-			pr_cont("done\n");
-	} else {
-		pr_info("L2 Cache: Not enabling prefetch\n");
-	}
-
-	return 0;
-}
-core_initcall(meta_l2c_setup);
-
-int meta_l2c_disable(void)
-{
-	unsigned long flags;
-	int en;
-
-	if (!meta_l2c_is_present())
-		return 1;
-
-	/*
-	 * Prevent other threads writing during the writeback, otherwise the
-	 * writes will get "lost" when the L2 is disabled.
-	 */
-	__global_lock2(flags);
-	en = meta_l2c_is_enabled();
-	if (likely(en)) {
-		_meta_l2c_pf_enable(0);
-		wr_fence();
-		_meta_l2c_purge();
-		_meta_l2c_enable(0);
-	}
-	__global_unlock2(flags);
-
-	return !en;
-}
-
-int meta_l2c_enable(void)
-{
-	unsigned long flags;
-	int en;
-
-	if (!meta_l2c_is_present())
-		return 0;
-
-	/*
-	 * Init (clearing the L2) can happen while the L2 is disabled, so other
-	 * threads are safe to continue executing, however we must not init the
-	 * cache if it's already enabled (dirty lines would be discarded), so
-	 * this operation should still be atomic with other threads.
-	 */
-	__global_lock1(flags);
-	en = meta_l2c_is_enabled();
-	if (likely(!en)) {
-		_meta_l2c_init();
-		_meta_l2c_enable(1);
-		_meta_l2c_pf_enable(l2c_pfenable);
-	}
-	__global_unlock1(flags);
-
-	return en;
-}
-
-int meta_l2c_pf_enable(int pfenable)
-{
-	unsigned long flags;
-	int en = l2c_pfenable;
-
-	if (!meta_l2c_is_present())
-		return 0;
-
-	/*
-	 * We read modify write the enable register, so this operation must be
-	 * atomic with other threads.
-	 */
-	__global_lock1(flags);
-	en = l2c_pfenable;
-	l2c_pfenable = pfenable;
-	if (meta_l2c_is_enabled())
-		_meta_l2c_pf_enable(pfenable);
-	__global_unlock1(flags);
-
-	return en;
-}
-
-int meta_l2c_flush(void)
-{
-	unsigned long flags;
-	int en;
-
-	/*
-	 * Prevent other threads writing during the writeback. This also
-	 * involves read modify writes.
-	 */
-	__global_lock2(flags);
-	en = meta_l2c_is_enabled();
-	if (likely(en)) {
-		_meta_l2c_pf_enable(0);
-		wr_fence();
-		_meta_l2c_purge();
-		_meta_l2c_enable(0);
-		_meta_l2c_init();
-		_meta_l2c_enable(1);
-		_meta_l2c_pf_enable(l2c_pfenable);
-	}
-	__global_unlock2(flags);
-
-	return !en;
-}
diff --git a/arch/metag/mm/maccess.c b/arch/metag/mm/maccess.c
deleted file mode 100644
index c22755165df9..000000000000
--- a/arch/metag/mm/maccess.c
+++ /dev/null
@@ -1,69 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * safe read and write memory routines callable while atomic
- *
- * Copyright 2012 Imagination Technologies
- */
-
-#include <linux/uaccess.h>
-#include <asm/io.h>
-
-/*
- * The generic probe_kernel_write() uses the user copy code which can split the
- * writes if the source is unaligned, and repeats writes to make exceptions
- * precise. We override it here to avoid these things happening to memory mapped
- * IO memory where they could have undesired effects.
- * Due to the use of CACHERD instruction this only works on Meta2 onwards.
- */
-#ifdef CONFIG_METAG_META21
-long probe_kernel_write(void *dst, const void *src, size_t size)
-{
-	unsigned long ldst = (unsigned long)dst;
-	void __iomem *iodst = (void __iomem *)dst;
-	unsigned long lsrc = (unsigned long)src;
-	const u8 *psrc = (u8 *)src;
-	unsigned int pte, i;
-	u8 bounce[8] __aligned(8);
-
-	if (!size)
-		return 0;
-
-	/* Use the write combine bit to decide is the destination is MMIO. */
-	pte = __builtin_meta2_cacherd(dst);
-
-	/* Check the mapping is valid and writeable. */
-	if ((pte & (MMCU_ENTRY_WR_BIT | MMCU_ENTRY_VAL_BIT))
-	    != (MMCU_ENTRY_WR_BIT | MMCU_ENTRY_VAL_BIT))
-		return -EFAULT;
-
-	/* Fall back to generic version for cases we're not interested in. */
-	if (pte & MMCU_ENTRY_WRC_BIT	|| /* write combined memory */
-	    (ldst & (size - 1))		|| /* destination unaligned */
-	    size > 8			|| /* more than max write size */
-	    (size & (size - 1)))	   /* non power of 2 size */
-		return __probe_kernel_write(dst, src, size);
-
-	/* If src is unaligned, copy to the aligned bounce buffer first. */
-	if (lsrc & (size - 1)) {
-		for (i = 0; i < size; ++i)
-			bounce[i] = psrc[i];
-		psrc = bounce;
-	}
-
-	switch (size) {
-	case 1:
-		writeb(*psrc, iodst);
-		break;
-	case 2:
-		writew(*(const u16 *)psrc, iodst);
-		break;
-	case 4:
-		writel(*(const u32 *)psrc, iodst);
-		break;
-	case 8:
-		writeq(*(const u64 *)psrc, iodst);
-		break;
-	}
-	return 0;
-}
-#endif
diff --git a/arch/metag/mm/mmu-meta1.c b/arch/metag/mm/mmu-meta1.c
deleted file mode 100644
index 53190b13dc54..000000000000
--- a/arch/metag/mm/mmu-meta1.c
+++ /dev/null
@@ -1,157 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  Copyright (C) 2005,2006,2007,2008,2009 Imagination Technologies
- *
- * Meta 1 MMU handling code.
- *
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/io.h>
-
-#include <asm/mmu.h>
-
-#define DM3_BASE (LINSYSDIRECT_BASE + (MMCU_DIRECTMAPn_ADDR_SCALE * 3))
-
-/*
- * This contains the physical address of the top level 2k pgd table.
- */
-static unsigned long mmu_base_phys;
-
-/*
- * Given a physical address, return a mapped virtual address that can be used
- * to access that location.
- * In practice, we use the DirectMap region to make this happen.
- */
-static unsigned long map_addr(unsigned long phys)
-{
-	static unsigned long dm_base = 0xFFFFFFFF;
-	int offset;
-
-	offset = phys - dm_base;
-
-	/* Are we in the current map range ? */
-	if ((offset < 0) || (offset >= MMCU_DIRECTMAPn_ADDR_SCALE)) {
-		/* Calculate new DM area */
-		dm_base = phys & ~(MMCU_DIRECTMAPn_ADDR_SCALE - 1);
-
-		/* Actually map it in! */
-		metag_out32(dm_base, MMCU_DIRECTMAP3_ADDR);
-
-		/* And calculate how far into that area our reference is */
-		offset = phys - dm_base;
-	}
-
-	return DM3_BASE + offset;
-}
-
-/*
- * Return the physical address of the base of our pgd table.
- */
-static inline unsigned long __get_mmu_base(void)
-{
-	unsigned long base_phys;
-	unsigned int stride;
-
-	if (is_global_space(PAGE_OFFSET))
-		stride = 4;
-	else
-		stride = hard_processor_id();	/* [0..3] */
-
-	base_phys = metag_in32(MMCU_TABLE_PHYS_ADDR);
-	base_phys += (0x800 * stride);
-
-	return base_phys;
-}
-
-/* Given a virtual address, return the virtual address of the relevant pgd */
-static unsigned long pgd_entry_addr(unsigned long virt)
-{
-	unsigned long pgd_phys;
-	unsigned long pgd_virt;
-
-	if (!mmu_base_phys)
-		mmu_base_phys = __get_mmu_base();
-
-	/*
-	 * Are we trying to map a global address.  If so, then index
-	 * the global pgd table instead of our local one.
-	 */
-	if (is_global_space(virt)) {
-		/* Scale into 2gig map */
-		virt &= ~0x80000000;
-	}
-
-	/* Base of the pgd table plus our 4Meg entry, 4bytes each */
-	pgd_phys = mmu_base_phys + ((virt >> PGDIR_SHIFT) * 4);
-
-	pgd_virt = map_addr(pgd_phys);
-
-	return pgd_virt;
-}
-
-/* Given a virtual address, return the virtual address of the relevant pte */
-static unsigned long pgtable_entry_addr(unsigned long virt)
-{
-	unsigned long pgtable_phys;
-	unsigned long pgtable_virt, pte_virt;
-
-	/* Find the physical address of the 4MB page table*/
-	pgtable_phys = metag_in32(pgd_entry_addr(virt)) & MMCU_ENTRY_ADDR_BITS;
-
-	/* Map it to a virtual address */
-	pgtable_virt = map_addr(pgtable_phys);
-
-	/* And index into it for our pte */
-	pte_virt = pgtable_virt + ((virt >> PAGE_SHIFT) & 0x3FF) * 4;
-
-	return pte_virt;
-}
-
-unsigned long mmu_read_first_level_page(unsigned long vaddr)
-{
-	return metag_in32(pgd_entry_addr(vaddr));
-}
-
-unsigned long mmu_read_second_level_page(unsigned long vaddr)
-{
-	return metag_in32(pgtable_entry_addr(vaddr));
-}
-
-unsigned long mmu_get_base(void)
-{
-	static unsigned long __base;
-
-	/* Find the base of our MMU pgd table */
-	if (!__base)
-		__base = pgd_entry_addr(0);
-
-	return __base;
-}
-
-void __init mmu_init(unsigned long mem_end)
-{
-	unsigned long entry, addr;
-	pgd_t *p_swapper_pg_dir;
-
-	/*
-	 * Now copy over any MMU pgd entries already in the mmu page tables
-	 * over to our root init process (swapper_pg_dir) map.  This map is
-	 * then inherited by all other processes, which means all processes
-	 * inherit a map of the kernel space.
-	 */
-	addr = PAGE_OFFSET;
-	entry = pgd_index(PAGE_OFFSET);
-	p_swapper_pg_dir = pgd_offset_k(0) + entry;
-
-	while (addr <= META_MEMORY_LIMIT) {
-		unsigned long pgd_entry;
-		/* copy over the current MMU value */
-		pgd_entry = mmu_read_first_level_page(addr);
-		pgd_val(*p_swapper_pg_dir) = pgd_entry;
-
-		p_swapper_pg_dir++;
-		addr += PGDIR_SIZE;
-	}
-}
diff --git a/arch/metag/mm/mmu-meta2.c b/arch/metag/mm/mmu-meta2.c
deleted file mode 100644
index 8b668a69c980..000000000000
--- a/arch/metag/mm/mmu-meta2.c
+++ /dev/null
@@ -1,208 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 2008,2009,2010,2011 Imagination Technologies Ltd.
- *
- * Meta 2 enhanced mode MMU handling code.
- *
- */
-
-#include <linux/mm.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/io.h>
-#include <linux/bootmem.h>
-#include <linux/syscore_ops.h>
-
-#include <asm/mmu.h>
-#include <asm/mmu_context.h>
-
-unsigned long mmu_read_first_level_page(unsigned long vaddr)
-{
-	unsigned int cpu = hard_processor_id();
-	unsigned long offset, linear_base, linear_limit;
-	unsigned int phys0;
-	pgd_t *pgd, entry;
-
-	if (is_global_space(vaddr))
-		vaddr &= ~0x80000000;
-
-	offset = vaddr >> PGDIR_SHIFT;
-
-	phys0 = metag_in32(mmu_phys0_addr(cpu));
-
-	/* Top bit of linear base is always zero. */
-	linear_base = (phys0 >> PGDIR_SHIFT) & 0x1ff;
-
-	/* Limit in the range 0 (4MB) to 9 (2GB). */
-	linear_limit = 1 << ((phys0 >> 8) & 0xf);
-	linear_limit += linear_base;
-
-	/*
-	 * If offset is below linear base or above the limit then no
-	 * mapping exists.
-	 */
-	if (offset < linear_base || offset > linear_limit)
-		return 0;
-
-	offset -= linear_base;
-	pgd = (pgd_t *)mmu_get_base();
-	entry = pgd[offset];
-
-	return pgd_val(entry);
-}
-
-unsigned long mmu_read_second_level_page(unsigned long vaddr)
-{
-	return __builtin_meta2_cacherd((void *)(vaddr & PAGE_MASK));
-}
-
-unsigned long mmu_get_base(void)
-{
-	unsigned int cpu = hard_processor_id();
-	unsigned long stride;
-
-	stride = cpu * LINSYSMEMTnX_STRIDE;
-
-	/*
-	 * Bits 18:2 of the MMCU_TnLocal_TABLE_PHYS1 register should be
-	 * used as an offset to the start of the top-level pgd table.
-	 */
-	stride += (metag_in32(mmu_phys1_addr(cpu)) & 0x7fffc);
-
-	if (is_global_space(PAGE_OFFSET))
-		stride += LINSYSMEMTXG_OFFSET;
-
-	return LINSYSMEMT0L_BASE + stride;
-}
-
-#define FIRST_LEVEL_MASK	0xffffffc0
-#define SECOND_LEVEL_MASK	0xfffff000
-#define SECOND_LEVEL_ALIGN	64
-
-static void repriv_mmu_tables(void)
-{
-	unsigned long phys0_addr;
-	unsigned int g;
-
-	/*
-	 * Check that all the mmu table regions are priv protected, and if not
-	 * fix them and emit a warning. If we left them without priv protection
-	 * then userland processes would have access to a 2M window into
-	 * physical memory near where the page tables are.
-	 */
-	phys0_addr = MMCU_T0LOCAL_TABLE_PHYS0;
-	for (g = 0; g < 2; ++g) {
-		unsigned int t, phys0;
-		unsigned long flags;
-		for (t = 0; t < 4; ++t) {
-			__global_lock2(flags);
-			phys0 = metag_in32(phys0_addr);
-			if ((phys0 & _PAGE_PRESENT) && !(phys0 & _PAGE_PRIV)) {
-				pr_warn("Fixing priv protection on T%d %s MMU table region\n",
-					t,
-					g ? "global" : "local");
-				phys0 |= _PAGE_PRIV;
-				metag_out32(phys0, phys0_addr);
-			}
-			__global_unlock2(flags);
-
-			phys0_addr += MMCU_TnX_TABLE_PHYSX_STRIDE;
-		}
-
-		phys0_addr += MMCU_TXG_TABLE_PHYSX_OFFSET
-			    - 4*MMCU_TnX_TABLE_PHYSX_STRIDE;
-	}
-}
-
-#ifdef CONFIG_METAG_SUSPEND_MEM
-static void mmu_resume(void)
-{
-	/*
-	 * If a full suspend to RAM has happened then the original bad MMU table
-	 * priv may have been restored, so repriv them again.
-	 */
-	repriv_mmu_tables();
-}
-#else
-#define mmu_resume NULL
-#endif	/* CONFIG_METAG_SUSPEND_MEM */
-
-static struct syscore_ops mmu_syscore_ops = {
-	.resume  = mmu_resume,
-};
-
-void __init mmu_init(unsigned long mem_end)
-{
-	unsigned long entry, addr;
-	pgd_t *p_swapper_pg_dir;
-#ifdef CONFIG_KERNEL_4M_PAGES
-	unsigned long mem_size = mem_end - PAGE_OFFSET;
-	unsigned int pages = DIV_ROUND_UP(mem_size, 1 << 22);
-	unsigned int second_level_entry = 0;
-	unsigned long *second_level_table;
-#endif
-
-	/*
-	 * Now copy over any MMU pgd entries already in the mmu page tables
-	 * over to our root init process (swapper_pg_dir) map.  This map is
-	 * then inherited by all other processes, which means all processes
-	 * inherit a map of the kernel space.
-	 */
-	addr = META_MEMORY_BASE;
-	entry = pgd_index(META_MEMORY_BASE);
-	p_swapper_pg_dir = pgd_offset_k(0) + entry;
-
-	while (entry < (PTRS_PER_PGD - pgd_index(META_MEMORY_BASE))) {
-		unsigned long pgd_entry;
-		/* copy over the current MMU value */
-		pgd_entry = mmu_read_first_level_page(addr);
-		pgd_val(*p_swapper_pg_dir) = pgd_entry;
-
-		p_swapper_pg_dir++;
-		addr += PGDIR_SIZE;
-		entry++;
-	}
-
-#ifdef CONFIG_KERNEL_4M_PAGES
-	/*
-	 * At this point we can also map the kernel with 4MB pages to
-	 * reduce TLB pressure.
-	 */
-	second_level_table = alloc_bootmem_pages(SECOND_LEVEL_ALIGN * pages);
-
-	addr = PAGE_OFFSET;
-	entry = pgd_index(PAGE_OFFSET);
-	p_swapper_pg_dir = pgd_offset_k(0) + entry;
-
-	while (pages > 0) {
-		unsigned long phys_addr, second_level_phys;
-		pte_t *pte = (pte_t *)&second_level_table[second_level_entry];
-
-		phys_addr = __pa(addr);
-
-		second_level_phys = __pa(pte);
-
-		pgd_val(*p_swapper_pg_dir) = ((second_level_phys &
-					       FIRST_LEVEL_MASK) |
-					      _PAGE_SZ_4M |
-					      _PAGE_PRESENT);
-
-		pte_val(*pte) = ((phys_addr & SECOND_LEVEL_MASK) |
-				 _PAGE_PRESENT | _PAGE_DIRTY |
-				 _PAGE_ACCESSED | _PAGE_WRITE |
-				 _PAGE_CACHEABLE | _PAGE_KERNEL);
-
-		p_swapper_pg_dir++;
-		addr += PGDIR_SIZE;
-		/* Second level pages must be 64byte aligned. */
-		second_level_entry += (SECOND_LEVEL_ALIGN /
-				       sizeof(unsigned long));
-		pages--;
-	}
-	load_pgd(swapper_pg_dir, hard_processor_id());
-	flush_tlb_all();
-#endif
-
-	repriv_mmu_tables();
-	register_syscore_ops(&mmu_syscore_ops);
-}
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)
-{
-}