From 2e1aecb970b7662cf3d53d2d18a54c17f1eb55b8 Mon Sep 17 00:00:00 2001 From: Greentime Hu Date: Tue, 24 Oct 2017 14:53:31 +0800 Subject: nds32: MMU definitions This patch includes virtual memory layout, PHYS_OFFSET is defined as 0x0. It also includes the 4KB/8KB page size configurations and pte operations. Signed-off-by: Vincent Chen Signed-off-by: Greentime Hu Acked-by: Arnd Bergmann --- arch/nds32/include/asm/shmparam.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 arch/nds32/include/asm/shmparam.h (limited to 'arch/nds32/include/asm/shmparam.h') diff --git a/arch/nds32/include/asm/shmparam.h b/arch/nds32/include/asm/shmparam.h new file mode 100644 index 000000000000..fd1cff64b68e --- /dev/null +++ b/arch/nds32/include/asm/shmparam.h @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef _ASMNDS32_SHMPARAM_H +#define _ASMNDS32_SHMPARAM_H + +/* + * This should be the size of the virtually indexed cache/ways, + * whichever is greater since the cache aliases every size/ways + * bytes. + */ +#define SHMLBA (4 * SZ_8K) /* attach addr a multiple of this */ + +/* + * Enforce SHMLBA in shmat + */ +#define __ARCH_FORCE_SHMLBA + +#endif /* _ASMNDS32_SHMPARAM_H */ -- cgit v1.2.3