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+ =======================================
+ FUJITSU FR-V LINUX KERNEL CONFIGURATION
+ =======================================
+
+=====================
+CONFIGURATION OPTIONS
+=====================
+
+The most important setting is in the "MMU support options" tab (the first
+presented in the configuration tools available):
+
+ (*) "Kernel Type"
+
+ This options allows selection of normal, MMU-requiring linux, and uClinux
+ (which doesn't require an MMU and doesn't have inter-process protection).
+
+There are a number of settings in the "Processor type and features" section of
+the kernel configuration that need to be considered.
+
+ (*) "CPU"
+
+ The register and instruction sets at the core of the processor. This can
+ only be set to "FR40x/45x/55x" at the moment - but this permits usage of
+ the kernel with MB93091 CB10, CB11, CB30, CB41, CB60, CB70 and CB451
+ CPU boards, and with the MB93093 PDK board.
+
+ (*) "System"
+
+ This option allows a choice of basic system. This governs the peripherals
+ that are expected to be available.
+
+ (*) "Motherboard"
+
+ This specifies the type of motherboard being used, and the peripherals
+ upon it. Currently only "MB93090-MB00" can be set here.
+
+ (*) "Default cache-write mode"
+
+ This controls the initial data cache write management mode. By default
+ Write-Through is selected, but Write-Back (Copy-Back) can also be
+ selected. This can be changed dynamically once the kernel is running (see
+ features.txt).
+
+There are some architecture specific configuration options in the "General
+Setup" section of the kernel configuration too:
+
+ (*) "Reserve memory uncached for (PCI) DMA"
+
+ This requests that a uClinux kernel set aside some memory in an uncached
+ window for the use as consistent DMA memory (mainly for PCI). At least a
+ megabyte will be allocated in this way, possibly more. Any memory so
+ reserved will not be available for normal allocations.
+
+ (*) "Kernel support for ELF-FDPIC binaries"
+
+ This enables the binary-format driver for the new FDPIC ELF binaries that
+ this platform normally uses. These binaries are totally relocatable -
+ their separate sections can relocated independently, allowing them to be
+ shared on uClinux where possible. This should normally be enabled.
+
+ (*) "Kernel image protection"
+
+ This makes the protection register governing access to the core kernel
+ image prohibit access by userspace programs. This option is available on
+ uClinux only.
+
+There are also a number of settings in the "Kernel Hacking" section of the
+kernel configuration especially for debugging a kernel on this
+architecture. See the "gdbstub.txt" file for information about those.
+
+
+======================
+DEFAULT CONFIGURATIONS
+======================
+
+The kernel sources include a number of example default configurations:
+
+ (*) defconfig-mb93091
+
+ Default configuration for the MB93091-VDK with both CPU board and
+ MB93090-MB00 motherboard running uClinux.
+
+
+ (*) defconfig-mb93091-fb
+
+ Default configuration for the MB93091-VDK with CPU board,
+ MB93090-MB00 motherboard, and DAV board running uClinux.
+ Includes framebuffer driver.
+
+
+ (*) defconfig-mb93093
+
+ Default configuration for the MB93093-PDK board running uClinux.
+
+
+ (*) defconfig-cb70-standalone
+
+ Default configuration for the MB93091-VDK with only CB70 CPU board
+ running uClinux. This will use the CB70's DM9000 for network access.
+
+
+ (*) defconfig-mmu
+
+ Default configuration for the MB93091-VDK with both CB451 CPU board and
+ MB93090-MB00 motherboard running MMU linux.
+
+ (*) defconfig-mmu-audio
+
+ Default configuration for the MB93091-VDK with CB451 CPU board, DAV
+ board, and MB93090-MB00 motherboard running MMU linux. Includes
+ audio driver.
+
+ (*) defconfig-mmu-fb
+
+ Default configuration for the MB93091-VDK with CB451 CPU board, DAV
+ board, and MB93090-MB00 motherboard running MMU linux. Includes
+ framebuffer driver.
+
+ (*) defconfig-mmu-standalone
+
+ Default configuration for the MB93091-VDK with only CB451 CPU board
+ running MMU linux.
+
+
+
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