diff options
Diffstat (limited to 'arch/microblaze')
| -rw-r--r-- | arch/microblaze/Kconfig | 112 |
1 files changed, 109 insertions, 3 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index f8e0722df0cf..b50b845fdd50 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" |