diff options
author | Arnd Bergmann <arnd@arndb.de> | 2020-04-20 11:37:12 +0200 |
---|---|---|
committer | Rich Felker <dalias@libc.org> | 2020-06-01 14:48:52 -0400 |
commit | 37744feebc086908fd89760650f458ab19071750 (patch) | |
tree | 15e16a15e2800c72e37ffee315f17ea9792f3ea6 /arch/sh/include/asm/mmu_context_64.h | |
parent | d1f56f318d234fc5db230af2f3e0088f689ab3c0 (diff) |
sh: remove sh5 support
sh5 never became a product and has probably never really worked.
Remove it by recursively deleting all associated Kconfig options
and all corresponding files.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rich Felker <dalias@libc.org>
Diffstat (limited to 'arch/sh/include/asm/mmu_context_64.h')
-rw-r--r-- | arch/sh/include/asm/mmu_context_64.h | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/arch/sh/include/asm/mmu_context_64.h b/arch/sh/include/asm/mmu_context_64.h deleted file mode 100644 index bacafe0b887d..000000000000 --- a/arch/sh/include/asm/mmu_context_64.h +++ /dev/null @@ -1,75 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef __ASM_SH_MMU_CONTEXT_64_H -#define __ASM_SH_MMU_CONTEXT_64_H - -/* - * sh64-specific mmu_context interface. - * - * Copyright (C) 2000, 2001 Paolo Alberelli - * Copyright (C) 2003 - 2007 Paul Mundt - */ -#include <cpu/registers.h> -#include <asm/cacheflush.h> - -#define SR_ASID_MASK 0xffffffffff00ffffULL -#define SR_ASID_SHIFT 16 - -/* - * Destroy context related info for an mm_struct that is about - * to be put to rest. - */ -static inline void destroy_context(struct mm_struct *mm) -{ - /* Well, at least free TLB entries */ - flush_tlb_mm(mm); -} - -static inline unsigned long get_asid(void) -{ - unsigned long long sr; - - asm volatile ("getcon " __SR ", %0\n\t" - : "=r" (sr)); - - sr = (sr >> SR_ASID_SHIFT) & MMU_CONTEXT_ASID_MASK; - return (unsigned long) sr; -} - -/* Set ASID into SR */ -static inline void set_asid(unsigned long asid) -{ - unsigned long long sr, pc; - - asm volatile ("getcon " __SR ", %0" : "=r" (sr)); - - sr = (sr & SR_ASID_MASK) | (asid << SR_ASID_SHIFT); - - /* - * It is possible that this function may be inlined and so to avoid - * the assembler reporting duplicate symbols we make use of the - * gas trick of generating symbols using numerics and forward - * reference. - */ - asm volatile ("movi 1, %1\n\t" - "shlli %1, 28, %1\n\t" - "or %0, %1, %1\n\t" - "putcon %1, " __SR "\n\t" - "putcon %0, " __SSR "\n\t" - "movi 1f, %1\n\t" - "ori %1, 1 , %1\n\t" - "putcon %1, " __SPC "\n\t" - "rte\n" - "1:\n\t" - : "=r" (sr), "=r" (pc) : "0" (sr)); -} - -/* arch/sh/kernel/cpu/sh5/entry.S */ -extern unsigned long switch_and_save_asid(unsigned long new_asid); - -/* No spare register to twiddle, so use a software cache */ -extern pgd_t *mmu_pdtp_cache; - -#define set_TTB(pgd) (mmu_pdtp_cache = (pgd)) -#define get_TTB() (mmu_pdtp_cache) - -#endif /* __ASM_SH_MMU_CONTEXT_64_H */ |