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Diffstat (limited to 'doc/board/intel/cherryhill.rst')
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diff --git a/doc/board/intel/cherryhill.rst b/doc/board/intel/cherryhill.rst new file mode 100644 index 0000000000..151f0613f8 --- /dev/null +++ b/doc/board/intel/cherryhill.rst @@ -0,0 +1,30 @@ +.. SPDX-License-Identifier: GPL-2.0+ +.. sectionauthor:: Bin Meng <bmeng.cn@gmail.com> + +Cherry Hill CRB +=============== + +This uses Intel FSP for Braswell platform. Download it from Intel FSP website, +put the .fd file to the board directory and rename it to fsp.bin. + +Extract descriptor.bin and me.bin from the original BIOS on the board using +ifdtool and put them to the board directory as well. + +Note the FSP package for Braswell does not ship a traditional legacy VGA BIOS +image for the integrated graphics device. Instead a new binary called Video +BIOS Table (VBT) is shipped. Put it to the board directory and rename it to +vbt.bin if you want graphics support in U-Boot. + +Now you can build U-Boot and obtain u-boot.rom:: + + $ make cherryhill_defconfig + $ make all + +An important note for programming u-boot.rom to the on-board SPI flash is that +you need make sure the SPI flash's 'quad enable' bit in its status register +matches the settings in the descriptor.bin, otherwise the board won't boot. + +For the on-board SPI flash MX25U6435F, this can be done by writing 0x40 to the +status register by DediProg in: Config > Modify Status Register > Write Status +Register(s) > Register1 Value(Hex). This is is a one-time change. Once set, it +persists in SPI flash part regardless of the u-boot.rom image burned. |