Hi Pavel,
On 15 December 2014 at 15:34, Pavel Machek pavel@denx.de wrote:
Hi!
+Status +------ +U-Boot supports running as a coreboot [1] payload on x86. So far only link +(Chromebook pixel) has been tested, but it should work with minimal adjustments
Link is codeword for Chromebook Pixel? I'd write "Chromebook Pixel (Link)" if so.
+on other x86 boards since coreboot deals with most of the low-level details.
+U-Boot also supports booting directly from x86 reset vector without coreboot, +aka raw support or bare support. Currently Google Chromebook link and Intel
Should this me "Chromebook Pixel"?
Yes we should either say 'Chromebook Pixel' or link. I will tidy this up when applying.
+Building rom version U-Boot (hereafter referred to as u-boot.rom) is a little
"ROM version of" ?
+bit tricky, as generally it requires several binary blobs which are not shipped +in the U-Boot source tree. Due to this reason, the u-boot.rom build is not +turned on by default in the U-Boot source tree. Firstly, you need turn it on +by uncommenting the following line in the main U-Boot Makefile:
+# ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
+Google Chromebook link specific instructions:
"link -> Pixel"?
+Firstly, you need the following binary blobs:
Firstly->First
+You can get these binary blobs by:
+$ git clone http://review.coreboot.org/p/blobs.git +$ cd blobs
+Find the following files:
+* ./mainboard/google/link/descriptor.bin +* ./mainboard/google/link/me.bin +* ./northbridge/intel/sandybridge/systemagent-ivybridge.bin
+The 3rd one should be renamed to mrc.bin.
Should there be instruction where to put those files? Perhaps a script doing this and getting ROM would be nice?
+As for the video ROM, you can get it here [2].
+Now you can build U-Boot and obtain u-boot.rom:
+$ make chromebook_link_defconfig +$ make all
+Intel Crown Bay specific instructions:
+U-Boot support of Intel Crown Bay board [3] relies on a binary blob called +Firmware Support Package [4] to perform all the necessary initialization steps +as documented in the BIOS Writer Guide including initialization of the CPU,
"Guide, "
+Downalod the Intel FSP for Atom E6xx series and Platform Controller
-> Download.
Regards, Simon