arch/microblaze/Kconfig v5.13-rc1

MICROBLAZE

Endianness selection

microblaze architectures can be configured for either little or
big endian formats. Be sure to select the appropriate mode.

arch/microblaze/Kconfig.platform


Menu: Processor type and features

kernel/Kconfig.hz

Boot options

CMDLINE

Default kernel command string

On some architectures there is currently no way for the boot loader
to pass arguments to the kernel. For these architectures, you should
supply some command-line options at build time by entering them
here.

CMDLINE_FORCE

Force default kernel command string

Set this to have arguments from the default kernel command string
override those passed by the boot loader.



Menu: Kernel features

ADVANCED_OPTIONS

Prompt for advanced kernel configuration options

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.

Default settings for advanced configuration options are used

HIGHMEM

High memory support

The address space of Microblaze processors is only 4 Gigabytes large
and it has to accommodate user address space, kernel address
space as well as some memory mapped IO. That means that, if you
have a large amount of physical memory and/or IO, not all of the
memory can be "permanently mapped" by the kernel. The physical
memory that is not permanently mapped is called "high memory".

If unsure, say n.

LOWMEM_SIZE_BOOL

Set maximum low memory

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.

MANUAL_RESET_VECTOR

Microblaze reset vector address setup

Set this option to have the kernel override the CPU Reset vector.
If zero, no change will be made to the MicroBlaze reset vector at
address 0x0.
If non-zero, a jump instruction to this address, will be written
to the reset vector at address 0x0.
If you are unsure, set it to default value 0x0.

KERNEL_START_BOOL

Set custom kernel base address

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.

TASK_SIZE_BOOL

Set custom user task size

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.



Menu: Bus Options