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    Subject[PATCH 28/29] microblaze_mmu_v2: Kconfig update
    Date
    Signed-off-by: Michal Simek <monstr@monstr.eu>
    ---
    arch/microblaze/Kconfig | 112 +++++++++++++++++++++++++++++++++++++++++++++-
    1 files changed, 109 insertions(+), 3 deletions(-)

    diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
    index f8e0722..b50b845 100644
    --- a/arch/microblaze/Kconfig
    +++ b/arch/microblaze/Kconfig
    @@ -54,11 +54,9 @@ config GENERIC_GPIO
    def_bool y

    config PCI
    - depends on !MMU
    def_bool n

    config NO_DMA
    - depends on !MMU
    def_bool y

    source "init/Kconfig"
    @@ -76,7 +74,8 @@ source "kernel/Kconfig.preempt"
    source "kernel/Kconfig.hz"

    config MMU
    - def_bool n
    + bool "MMU support"
    + default n

    config NO_MMU
    bool
    @@ -119,6 +118,113 @@ config PROC_DEVICETREE

    endmenu

    +menu "Advanced setup"
    +
    +config ADVANCED_OPTIONS
    + bool "Prompt for advanced kernel configuration options"
    + depends on MMU
    + help
    + This option will enable prompting for a variety of advanced kernel
    + configuration options. These options can cause the kernel to not
    + work if they are set incorrectly, but can be used to optimize certain
    + aspects of kernel memory management.
    +
    + Unless you know what you are doing, say N here.
    +
    +comment "Default settings for advanced configuration options are used"
    + depends on !ADVANCED_OPTIONS
    +
    +config HIGHMEM_START_BOOL
    + bool "Set high memory pool address"
    + depends on ADVANCED_OPTIONS && HIGHMEM
    + help
    + This option allows you to set the base address of the kernel virtual
    + area used to map high memory pages. This can be useful in
    + optimizing the layout of kernel virtual memory.
    +
    + Say N here unless you know what you are doing.
    +
    +config HIGHMEM_START
    + hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
    + depends on MMU
    + default "0xfe000000"
    +
    +config LOWMEM_SIZE_BOOL
    + bool "Set maximum low memory"
    + depends on ADVANCED_OPTIONS
    + help
    + This option allows you to set the maximum amount of memory which
    + will be used as "low memory", that is, memory which the kernel can
    + access directly, without having to set up a kernel virtual mapping.
    + This can be useful in optimizing the layout of kernel virtual
    + memory.
    +
    + Say N here unless you know what you are doing.
    +
    +config LOWMEM_SIZE
    + hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
    + depends on MMU
    + default "0x30000000"
    +
    +config KERNEL_START_BOOL
    + bool "Set custom kernel base address"
    + depends on ADVANCED_OPTIONS
    + help
    + This option allows you to set the kernel virtual address at which
    + the kernel will map low memory (the kernel image will be linked at
    + this address). This can be useful in optimizing the virtual memory
    + layout of the system.
    +
    + Say N here unless you know what you are doing.
    +
    +config KERNEL_START
    + hex "Virtual address of kernel base" if KERNEL_START_BOOL
    + default "0xc0000000" if MMU
    + default KERNEL_BASE_ADDR if !MMU
    +
    +config TASK_SIZE_BOOL
    + bool "Set custom user task size"
    + depends on ADVANCED_OPTIONS
    + help
    + This option allows you to set the amount of virtual address space
    + allocated to user tasks. This can be useful in optimizing the
    + virtual memory layout of the system.
    +
    + Say N here unless you know what you are doing.
    +
    +config TASK_SIZE
    + hex "Size of user task space" if TASK_SIZE_BOOL
    + depends on MMU
    + default "0x80000000"
    +
    +config CONSISTENT_START_BOOL
    + bool "Set custom consistent memory pool address"
    + depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
    + help
    + This option allows you to set the base virtual address
    + of the the consistent memory pool. This pool of virtual
    + memory is used to make consistent memory allocations.
    +
    +config CONSISTENT_START
    + hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
    + depends on MMU
    + default "0xff100000" if NOT_COHERENT_CACHE
    +
    +config CONSISTENT_SIZE_BOOL
    + bool "Set custom consistent memory pool size"
    + depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
    + help
    + This option allows you to set the size of the the
    + consistent memory pool. This pool of virtual memory
    + is used to make consistent memory allocations.
    +
    +config CONSISTENT_SIZE
    + hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
    + depends on MMU
    + default "0x00200000" if NOT_COHERENT_CACHE
    +
    +endmenu
    +
    source "mm/Kconfig"

    menu "Exectuable file formats"
    --
    1.5.5.1


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