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Merge git://git.denx.de/u-boot-x86
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@@ -26,6 +26,7 @@ In this case, known as bare mode, from the fact that it runs on the
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are supported:
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- Bayley Bay CRB
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- Cherry Hill CRB
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- Congatec QEVAL 2.0 & conga-QA3/E3845
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- Cougar Canyon 2 CRB
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- Crown Bay CRB
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@@ -332,6 +333,35 @@ the default value 0xfffc0000.
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---
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Intel Cherry Hill specific instructions for bare mode:
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This uses Intel FSP for Braswell platform. Download it from Intel FSP website,
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put the .fd file to the board directory and rename it to fsp.bin.
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Extract descriptor.bin and me.bin from the original BIOS on the board using
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ifdtool and put them to the board directory as well.
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Note the FSP package for Braswell does not ship a traditional legacy VGA BIOS
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image for the integrated graphics device. Instead a new binary called Video
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BIOS Table (VBT) is shipped. Put it to the board directory and rename it to
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vbt.bin if you want graphics support in U-Boot.
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Now you can build U-Boot and obtain u-boot.rom
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$ make cherryhill_defconfig
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$ make all
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An important note for programming u-boot.rom to the on-board SPI flash is that
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you need make sure the SPI flash's 'quad enable' bit in its status register
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matches the settings in the descriptor.bin, otherwise the board won't boot.
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For the on-board SPI flash MX25U6435F, this can be done by writing 0x40 to the
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status register by DediProg in: Config > Modify Status Register > Write Status
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Register(s) > Register1 Value(Hex). This is is a one-time change. Once set, it
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persists in SPI flash part regardless of the u-boot.rom image burned.
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---
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Intel Galileo instructions for bare mode:
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Only one binary blob is needed for Remote Management Unit (RMU) within Intel
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