arch: remove m32r port

The Mitsubishi/Renesas m32r architecture has been around for many years,
but the Linux port has been obsolete for a very long time as well, with
the last significant updates done for linux-2.6.14.

While some m32r microcontrollers are still being marketed by Renesas,
those are apparently no longer possible to support, mainly due to the
lack of an external memory interface.

Hirokazu Takata was the maintainer until the architecture got marked
Orphaned in 2014.

Link: http://www.linux-m32r.org/
Link: https://www.renesas.com/en-eu/products/microcontrollers-microprocessors/m32r.html
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 98 deletions

diff --git a/arch/m32r/include/asm/tlbflush.h b/arch/m32r/include/asm/tlbflush.h
deleted file mode 100644
index f6c7237316d0..000000000000
--- a/arch/m32r/include/asm/tlbflush.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_M32R_TLBFLUSH_H
-#define _ASM_M32R_TLBFLUSH_H
-
-#include <asm/m32r.h>
-
-/*
- * TLB flushing:
- *
- *  - flush_tlb() flushes the current mm struct TLBs
- *  - flush_tlb_all() flushes all processes TLBs
- *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
- *  - flush_tlb_page(vma, vmaddr) flushes one page
- *  - flush_tlb_range(vma, start, end) flushes a range of pages
- *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
- */
-
-extern void local_flush_tlb_all(void);
-extern void local_flush_tlb_mm(struct mm_struct *);
-extern void local_flush_tlb_page(struct vm_area_struct *, unsigned long);
-extern void local_flush_tlb_range(struct vm_area_struct *, unsigned long,
-	unsigned long);
-
-#ifndef CONFIG_SMP
-#ifdef CONFIG_MMU
-#define flush_tlb_all()			local_flush_tlb_all()
-#define flush_tlb_mm(mm)		local_flush_tlb_mm(mm)
-#define flush_tlb_page(vma, page)	local_flush_tlb_page(vma, page)
-#define flush_tlb_range(vma, start, end)	\
-	local_flush_tlb_range(vma, start, end)
-#define flush_tlb_kernel_range(start, end)	local_flush_tlb_all()
-#else	/* CONFIG_MMU */
-#define flush_tlb_all()			do { } while (0)
-#define flush_tlb_mm(mm)		do { } while (0)
-#define flush_tlb_page(vma, vmaddr)	do { } while (0)
-#define flush_tlb_range(vma, start, end)	do { } while (0)
-#endif	/* CONFIG_MMU */
-#else	/* CONFIG_SMP */
-extern void smp_flush_tlb_all(void);
-extern void smp_flush_tlb_mm(struct mm_struct *);
-extern void smp_flush_tlb_page(struct vm_area_struct *, unsigned long);
-extern void smp_flush_tlb_range(struct vm_area_struct *, unsigned long,
-	unsigned long);
-
-#define flush_tlb_all()			smp_flush_tlb_all()
-#define flush_tlb_mm(mm)		smp_flush_tlb_mm(mm)
-#define flush_tlb_page(vma, page)	smp_flush_tlb_page(vma, page)
-#define flush_tlb_range(vma, start, end)	\
-	smp_flush_tlb_range(vma, start, end)
-#define flush_tlb_kernel_range(start, end)	smp_flush_tlb_all()
-#endif	/* CONFIG_SMP */
-
-static __inline__ void __flush_tlb_page(unsigned long page)
-{
-	unsigned int tmpreg0, tmpreg1, tmpreg2;
-
-	__asm__ __volatile__ (
-		"seth	%0, #high(%4)	\n\t"
-		"st	%3, @(%5, %0)	\n\t"
-		"ldi	%1, #1		\n\t"
-		"st	%1, @(%6, %0)	\n\t"
-		"add3	%1, %0, %7	\n\t"
-		".fillinsn		\n"
-		"1:			\n\t"
-		"ld	%2, @(%6, %0)	\n\t"
-		"bnez	%2, 1b		\n\t"
-		"ld	%0, @%1+	\n\t"
-		"ld	%1, @%1		\n\t"
-		"st	%2, @+%0	\n\t"
-		"st	%2, @+%1	\n\t"
-		: "=&r" (tmpreg0), "=&r" (tmpreg1), "=&r" (tmpreg2)
-		: "r" (page), "i" (MMU_REG_BASE), "i" (MSVA_offset),
-		"i" (MTOP_offset), "i" (MIDXI_offset)
-		: "memory"
-	);
-}
-
-static __inline__ void __flush_tlb_all(void)
-{
-	unsigned int tmpreg0, tmpreg1;
-
-	__asm__ __volatile__ (
-		"seth	%0, #high(%2)		\n\t"
-		"or3	%0, %0, #low(%2)	\n\t"
-		"ldi	%1, #0xc		\n\t"
-		"st	%1, @%0			\n\t"
-		".fillinsn			\n"
-		"1:				\n\t"
-		"ld	%1, @%0			\n\t"
-		"bnez	%1, 1b			\n\t"
-		: "=&r" (tmpreg0), "=&r" (tmpreg1)
-		: "i" (MTOP) : "memory"
-	);
-}
-
-extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t *);
-
-#endif	/* _ASM_M32R_TLBFLUSH_H */