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| author | Max Filippov <jcmvbkbc@gmail.com> | 2014-06-16 07:25:06 +0400 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2014-08-14 11:59:08 +0400 |
| commit | 420ae9518404c4aeda3abc8e017c8fdcc3a13d6b (patch) | |
| tree | 36c40eae5e715e35a8cb77899154d9e1398fa95f | |
| parent | 64aa90f26c06e1cb2aacfb98a7d0eccfbd6c1a91 (diff) | |
| download | linux-420ae9518404c4aeda3abc8e017c8fdcc3a13d6b.tar.xz | |
xtensa: simplify addition of new core variants
Instead of adding new Kconfig options and Makefile rules for each new
core variant provide XTENSA_VARIANT_CUSTOM variant and record variant
name in the XTENSA_VARIANT_NAME variable. Adding new core variant now
means providing directory structure under arch/xtensa/variant and
specifying correct name in kernel configuration.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
| -rw-r--r-- | arch/xtensa/Kconfig | 36 | ||||
| -rw-r--r-- | arch/xtensa/Makefile | 7 |
2 files changed, 37 insertions, 6 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 3a617af60d46..7feca8dfdff2 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -62,7 +62,9 @@ config TRACE_IRQFLAGS_SUPPORT def_bool y config MMU - def_bool n + bool + default n if !XTENSA_VARIANT_CUSTOM + default XTENSA_VARIANT_MMU if XTENSA_VARIANT_CUSTOM config VARIANT_IRQ_SWITCH def_bool n @@ -102,8 +104,40 @@ config XTENSA_VARIANT_S6000 select VARIANT_IRQ_SWITCH select ARCH_REQUIRE_GPIOLIB select XTENSA_CALIBRATE_CCOUNT + +config XTENSA_VARIANT_CUSTOM + bool "Custom Xtensa processor configuration" + select MAY_HAVE_SMP + select HAVE_XTENSA_GPIO32 + help + Select this variant to use a custom Xtensa processor configuration. + You will be prompted for a processor variant CORENAME. endchoice +config XTENSA_VARIANT_CUSTOM_NAME + string "Xtensa Processor Custom Core Variant Name" + depends on XTENSA_VARIANT_CUSTOM + help + Provide the name of a custom Xtensa processor variant. + This CORENAME selects arch/xtensa/variant/CORENAME. + Dont forget you have to select MMU if you have one. + +config XTENSA_VARIANT_NAME + string + default "dc232b" if XTENSA_VARIANT_DC232B + default "dc233c" if XTENSA_VARIANT_DC233C + default "fsf" if XTENSA_VARIANT_FSF + default "s6000" if XTENSA_VARIANT_S6000 + default XTENSA_VARIANT_CUSTOM_NAME if XTENSA_VARIANT_CUSTOM + +config XTENSA_VARIANT_MMU + bool "Core variant has a Full MMU (TLB, Pages, Protection, etc)" + depends on XTENSA_VARIANT_CUSTOM + default y + help + Build a Conventional Kernel with full MMU support, + ie: it supports a TLB with auto-loading, page protection. + config XTENSA_UNALIGNED_USER bool "Unaligned memory access in use space" help diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile index 81250ece3062..472533064b46 100644 --- a/arch/xtensa/Makefile +++ b/arch/xtensa/Makefile @@ -4,6 +4,7 @@ # for more details. # # Copyright (C) 2001 - 2005 Tensilica Inc. +# Copyright (C) 2014 Cadence Design Systems Inc. # # This file is included by the global makefile so that you can add your own # architecture-specific flags and dependencies. Remember to do have actions @@ -13,11 +14,7 @@ # Core configuration. # (Use VAR=<xtensa_config> to use another default compiler.) -variant-$(CONFIG_XTENSA_VARIANT_FSF) := fsf -variant-$(CONFIG_XTENSA_VARIANT_DC232B) := dc232b -variant-$(CONFIG_XTENSA_VARIANT_DC233C) := dc233c -variant-$(CONFIG_XTENSA_VARIANT_S6000) := s6000 -variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom +variant-y := $(patsubst "%",%,$(CONFIG_XTENSA_VARIANT_NAME)) VARIANT = $(variant-y) export VARIANT |