avr32: remove support for AVR32 architecture

This patch drops support for AVR32 architecture from the Linux kernel.

The AVR32 architecture is not keeping up with the development of the
kernel, and since it shares so much of the drivers with Atmel ARM SoC,
it is starting to hinder these drivers to develop swiftly.

Also, all AVR32 AP7 SoC processors are end of lifed from Atmel (now
Microchip).

Finally, the GCC toolchain is stuck at version 4.2.x, and has not
received any patches since the last release from Atmel;
4.2.4-atmel.1.1.3.avr32linux.1. When building kernel v4.10, this
toolchain is no longer able to properly link the network stack.

Haavard and I have came to the conclusion that we feel keeping AVR32 on
life support offers more obstacles for Atmel ARMs, than it gives joy to
AVR32 users. I also suspect there are very few AVR32 users left today,
if anybody at all.

Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Håvard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>

1 files changed, 0 insertions, 102 deletions

diff --git a/arch/avr32/include/asm/pgalloc.h b/arch/avr32/include/asm/pgalloc.h
deleted file mode 100644
index db039cb..0000000
--- a/arch/avr32/include/asm/pgalloc.h
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * 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.
- */
-#ifndef __ASM_AVR32_PGALLOC_H
-#define __ASM_AVR32_PGALLOC_H
-
-#include <linux/mm.h>
-#include <linux/quicklist.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-
-#define QUICK_PGD	0	/* Preserve kernel mappings over free */
-#define QUICK_PT	1	/* Zero on free */
-
-static inline void pmd_populate_kernel(struct mm_struct *mm,
-				       pmd_t *pmd, pte_t *pte)
-{
-	set_pmd(pmd, __pmd((unsigned long)pte));
-}
-
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
-				    pgtable_t pte)
-{
-	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
-}
-#define pmd_pgtable(pmd) pmd_page(pmd)
-
-static inline void pgd_ctor(void *x)
-{
-	pgd_t *pgd = x;
-
-	memcpy(pgd + USER_PTRS_PER_PGD,
-		swapper_pg_dir + USER_PTRS_PER_PGD,
-		(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
-}
-
-/*
- * Allocate and free page tables
- */
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
-	return quicklist_alloc(QUICK_PGD, GFP_KERNEL, pgd_ctor);
-}
-
-static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
-	quicklist_free(QUICK_PGD, NULL, pgd);
-}
-
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
-					  unsigned long address)
-{
-	return quicklist_alloc(QUICK_PT, GFP_KERNEL, NULL);
-}
-
-static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
-					 unsigned long address)
-{
-	struct page *page;
-	void *pg;
-
-	pg = quicklist_alloc(QUICK_PT, GFP_KERNEL, NULL);
-	if (!pg)
-		return NULL;
-
-	page = virt_to_page(pg);
-	if (!pgtable_page_ctor(page)) {
-		quicklist_free(QUICK_PT, NULL, pg);
-		return NULL;
-	}
-
-	return page;
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
-	quicklist_free(QUICK_PT, NULL, pte);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
-	pgtable_page_dtor(pte);
-	quicklist_free_page(QUICK_PT, NULL, pte);
-}
-
-#define __pte_free_tlb(tlb,pte,addr)			\
-do {							\
-	pgtable_page_dtor(pte);				\
-	tlb_remove_page((tlb), pte);			\
-} while (0)
-
-static inline void check_pgt_cache(void)
-{
-	quicklist_trim(QUICK_PGD, NULL, 25, 16);
-	quicklist_trim(QUICK_PT, NULL, 25, 16);
-}
-
-#endif /* __ASM_AVR32_PGALLOC_H */