From 74fcc77982e703fe85d8bd5437130fd94c61daee Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 3 Jun 2008 18:52:11 +0900 Subject: sh: Support variable page sizes on nommu. PAGE_SIZE doesn't need to be fixed at 4096 on nommu, so stub in a !MMU case for the various PAGE_SIZE Kconfig options. Signed-off-by: Paul Mundt --- arch/sh/mm/Kconfig | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/sh/mm/Kconfig') diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 5fd218430b19..5267c434d6eb 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -145,19 +145,19 @@ choice config PAGE_SIZE_4KB bool "4kB" - depends on !X2TLB + depends on !MMU || !X2TLB help This is the default page size used by all SuperH CPUs. config PAGE_SIZE_8KB bool "8kB" - depends on X2TLB + depends on !MMU || X2TLB help This enables 8kB pages as supported by SH-X2 and later MMUs. config PAGE_SIZE_64KB bool "64kB" - depends on CPU_SH4 || CPU_SH5 + depends on !MMU || CPU_SH4 || CPU_SH5 help This enables support for 64kB pages, possible on all SH-4 CPUs and later. -- cgit v1.2.1 From 66dfe18114839a7297f56f43f03125f4121de79b Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 3 Jun 2008 18:54:02 +0900 Subject: sh: Add support for 16kB PAGE_SIZE. 16kB is a useful size on nommu, while 64kB still tends to be too big to be useful. Newer MMUs are likely to support this as well, so plug it in in anticipation of those, too. Signed-off-by: Paul Mundt --- arch/sh/mm/Kconfig | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/sh/mm/Kconfig') diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 5267c434d6eb..29d8e3c58b34 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -155,6 +155,12 @@ config PAGE_SIZE_8KB help This enables 8kB pages as supported by SH-X2 and later MMUs. +config PAGE_SIZE_16KB + bool "16kB" + depends on !MMU + help + This enables 16kB pages on MMU-less SH systems. + config PAGE_SIZE_64KB bool "64kB" depends on !MMU || CPU_SH4 || CPU_SH5 -- cgit v1.2.1 From 82cb1f6fb3f69518eaa4ab9c0fa7eabc253ad26f Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Wed, 23 Jul 2008 16:49:06 +0900 Subject: sh: fix uImage Entry Point fix the problem that cannot boot using uImage when PAGE_SIZE is 8kbyte or 64kbyte. Signed-off-by: Yoshihiro Shimoda Signed-off-by: Paul Mundt --- arch/sh/mm/Kconfig | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/sh/mm/Kconfig') diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 29d8e3c58b34..56d0a7daa34b 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -170,6 +170,14 @@ config PAGE_SIZE_64KB endchoice +config ENTRY_OFFSET + hex + default "0x00001000" if PAGE_SIZE_4KB + default "0x00002000" if PAGE_SIZE_8KB + default "0x00004000" if PAGE_SIZE_16KB + default "0x00010000" if PAGE_SIZE_64KB + default "0x00000000" + choice prompt "HugeTLB page size" depends on HUGETLB_PAGE && (CPU_SH4 || CPU_SH5) && MMU -- cgit v1.2.1 From cce2d453e4940d3fccd42a6917d01027148e11c3 Mon Sep 17 00:00:00 2001 From: Yoshinori Sato Date: Mon, 4 Aug 2008 16:33:47 +0900 Subject: SH2(A) cache update Includes: - SH2 (7619) Writeback support. - SH2A cache handling fix. Signed-off-by: Yoshinori Sato Signed-off-by: Paul Mundt --- arch/sh/mm/Kconfig | 1 - 1 file changed, 1 deletion(-) (limited to 'arch/sh/mm/Kconfig') diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 56d0a7daa34b..9c131cac91a4 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -237,7 +237,6 @@ choice config CACHE_WRITEBACK bool "Write-back" - depends on CPU_SH2A || CPU_SH3 || CPU_SH4 || CPU_SH5 config CACHE_WRITETHROUGH bool "Write-through" -- cgit v1.2.1 From 68b7c24cf9c699ed93c4a70f958b5bb3943723bc Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 6 Aug 2008 15:10:49 +0900 Subject: sh: Disable 64kB hugetlbpage size when using 64kB PAGE_SIZE. Presently we oops in mm/hugetlb.c:1325, which is the order == 0 test in hugetlb_add_hstate() called at initialization time. So, disable 64kB huge pages when we're using a 64kB PAGE_SIZE. On most parts this will force the default to be 1MB huge pages. Signed-off-by: Paul Mundt --- arch/sh/mm/Kconfig | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/sh/mm/Kconfig') diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 9c131cac91a4..8a03926ea84f 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -181,10 +181,12 @@ config ENTRY_OFFSET choice prompt "HugeTLB page size" depends on HUGETLB_PAGE && (CPU_SH4 || CPU_SH5) && MMU + default HUGETLB_PAGE_SIZE_1MB if PAGE_SIZE_64KB default HUGETLB_PAGE_SIZE_64K config HUGETLB_PAGE_SIZE_64K bool "64kB" + depends on !PAGE_SIZE_64KB config HUGETLB_PAGE_SIZE_256K bool "256kB" -- cgit v1.2.1 From 3159e7d62ad13f71ef3fe029c145594d8caa580d Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Fri, 5 Sep 2008 15:39:12 +0900 Subject: sh: Add support for memory hot-remove. Signed-off-by: Paul Mundt --- arch/sh/mm/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/sh/mm/Kconfig') diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index 8a03926ea84f..f8e6dc5e056f 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -134,6 +134,10 @@ config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y depends on SPARSEMEM +config ARCH_ENABLE_MEMORY_HOTREMOVE + def_bool y + depends on SPARSEMEM + config ARCH_MEMORY_PROBE def_bool y depends on MEMORY_HOTPLUG -- cgit v1.2.1 From b85641bdde340f683e5baa7688832e185548c9bd Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 17 Sep 2008 23:13:27 +0900 Subject: sh: Make memory hot-add and hot-remove depend on MMU. Cleans up link numerous build issues with page migration and so on when enabled on nommu builds. Signed-off-by: Paul Mundt --- arch/sh/mm/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/sh/mm/Kconfig') diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index f8e6dc5e056f..555ec9714b9e 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -132,11 +132,11 @@ config ARCH_SELECT_MEMORY_MODEL config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y - depends on SPARSEMEM + depends on SPARSEMEM && MMU config ARCH_ENABLE_MEMORY_HOTREMOVE def_bool y - depends on SPARSEMEM + depends on SPARSEMEM && MMU config ARCH_MEMORY_PROBE def_bool y -- cgit v1.2.1