44 lines
2.0 KiB
ReStructuredText
44 lines
2.0 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
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.. sectionauthor:: Bin Meng <bmeng.cn@gmail.com>
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Crown Bay CRB
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=============
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U-Boot support of Intel `Crown Bay`_ board relies on a binary blob called
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Firmware Support Package (`FSP`_) to perform all the necessary initialization
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steps as documented in the BIOS Writer Guide, including initialization of the
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CPU, memory controller, chipset and certain bus interfaces.
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Download the Intel FSP for Atom E6xx series and Platform Controller Hub EG20T,
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install it on your host and locate the FSP binary blob. Note this platform
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also requires a Chipset Micro Code (CMC) state machine binary to be present in
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the SPI flash where u-boot.rom resides, and this CMC binary blob can be found
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in this FSP package too.
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* ./FSP/QUEENSBAY_FSP_GOLD_001_20-DECEMBER-2013.fd
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* ./Microcode/C0_22211.BIN
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Rename the first one to fsp.bin and second one to cmc.bin and put them in the
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board directory.
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Note the FSP release version 001 has a bug which could cause random endless
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loop during the FspInit call. This bug was published by Intel although Intel
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did not describe any details. We need manually apply the patch to the FSP
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binary using any hex editor (eg: bvi). Go to the offset 0x1fcd8 of the FSP
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binary, change the following five bytes values from orginally E8 42 FF FF FF
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to B8 00 80 0B 00.
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As for the video ROM, you need manually extract it from the Intel provided
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BIOS for Crown Bay `here`_, using the AMI `MMTool`_. Check PCI option
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ROM ID 8086:4108, extract and save it as vga.bin in the board directory.
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Now you can build U-Boot and obtain u-boot.rom::
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$ make crownbay_defconfig
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$ make all
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.. _`Crown Bay`: http://www.intel.com/content/www/us/en/embedded/design-tools/evaluation-platforms/atom-e660-eg20t-development-kit.html
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.. _`FSP`: http://www.intel.com/fsp
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.. _`here`: http://www.intel.com/content/www/us/en/secure/intelligent-systems/privileged/e6xx-35-b1-cmc22211.html
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.. _`MMTool`: http://www.ami.com/products/bios-uefi-tools-and-utilities/bios-uefi-utilities/
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