MIPS Boston Development Board
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About
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The MIPS Boston development board is built around an FPGA & 3 PCIe controllers,
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one of which is connected to an Intel EG20T Platform Controller Hub which
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provides most connectivity to the board. It is used during the development &
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testing of both new CPUs and the software support for them. It is essentially
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the successor of the older MIPS Malta board.
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--------
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QEMU
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--------
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U-Boot can be run on a currently out-of-tree branch of QEMU with support for
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the Boston board added. This QEMU code can currently be found in the "boston"
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branch of git://git.linux-mips.org/pub/scm/paul/qemu.git and used like so:
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$ git clone git://git.linux-mips.org/pub/scm/paul/qemu.git -b boston
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$ cd qemu
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$ ./configure --target-list=mips64el-softmmu
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$ make
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$ ./mips64el-softmmu/qemu-system-mips64el -M boston -m 2G \
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-bios u-boot.bin -serial stdio
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Please note that QEMU will default to emulating the I6400 CPU which implements
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the MIPS64r6 ISA, and at the time of writing doesn't implement any earlier CPUs
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with support for the CPS features the Boston board relies upon. You will
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therefore need to configure U-Boot to build for MIPSr6 in order to obtain a
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binary that will work in QEMU.
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Toolchain
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-------------
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If building for MIPSr6 then you will need a toolchain including GCC 5.x or
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newer, or the Codescape toolchain available for download from Imagination
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Technologies:
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http://codescape-mips-sdk.imgtec.com/components/toolchain/2015.06-05/
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The "IMG GNU Linux Toolchain" is capable of building for all current MIPS ISAs,
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architecture revisions & both endiannesses.
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--------
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TODO
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--------
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- AHCI support
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- CPU driver
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- Exception handling (+UHI?)
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- Flash support
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- IOCU support
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- L2 cache support
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- More general LCD display driver
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- Multi-arch-variant multi-endian fat binary
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