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NEW MAINBOARD: HP EliteBook 820 G2

Browse Source 
This is of Broadwell platform, one generation above Haswell.

Of note: this uses HP Sure Start. Although the flash is 16MB,
our CBFS section (and IFD configuration) assumes 12MB flash,
so the final 4MB will be left unflashed on installation,
after blanking the private flash. The coreboot documents have
more information about this.

Some minor design changes in lbmk were made, to accomodate
this port:

Support for extracting refcode binaries added (pulled from
Google recovery images). The refcode file is an ELF that
initialises the MRC and the PCH. It is also responsible for
enabling or disabling the Intel GbE device, where Google
does not enable it, but lbmk modifies it per the instructions
on the coreboot documentation, so as to enable Intel GbE.

Google's recovery image stores the refcode as a stage file,
but coreboot changed the format (for CBFS files) after 4.13
so coreboot 4.13's cbfstool is used to extract refcode. This
realisation made me also change the script logic to use a
cbfstool and ifdtool version matching the coreboot tree, for
all parts of lbmk, whereas lbmk previously used only the
default tree for cbfstool/ifdtool, on insertion and deletion
of vendor files - it was 81dc20e744 that broke extraction of
refcode on google's recovery images, where google used an older
version of cbfstool to insert the files in their coreboot ROMs.
A further backported patch has been added, copying coreboot
revision f22f408956 which is a build fix from Nico Huber.

Iru Cai submitted an ACPI bugfix after the revision lbmk
currently uses, for coreboot/default, and this fix is
needed for rebooting to work on Linux 6.1 or higher. This
patch has been backported to lbmk, while it still uses the
same October 2023 revision of coreboot.

Broadwell MRC is inserted at the same offset as Haswell,
so I didn't need to tweak that.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2024-01-07 13:25:33 +00:00
parent a8a7a51b9b
commit 401c0882aa
15 changed files with 1638 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
config/vendor/sources
Vendored
+12
View File
@@ -33,6 +33,18 @@
MRC_board peppy
}
{hp820g2}{
DL_hash 1ac05a3e4f46426eeb77f89c4aca25ed1ad64479d8fcba6a3ab63a944512bacbc5d148cc7b9c4ff4b8c90a1fb1de4776e46f14aca8021900e0df37246aa0b717
DL_url https://download.lenovo.com/pccbbs/mobiles/n10rg50w.exe
DL_url_bkup https://download.lenovo.com/pccbbs/mobiles/n10rg50w.exe
MRC_url https://dl.google.com/dl/edgedl/chromeos/recovery/chromeos_13904.77.0_samus_recovery_stable-channel_mp-v3.bin.zip
MRC_url_bkup https://web.archive.org/web/20220310155922/https://dl.google.com/dl/edgedl/chromeos/recovery/chromeos_13904.77.0_samus_recovery_stable-channel_mp-v3.bin.zip
MRC_hash 3ff1599c52539f0707a07a8664a84ce51cd3fed1569df4bb7aa6722fc8dec0af1754250333b6ca1a9794d970a4de7b29a5cf2499f5b61e4c3eab64d1314aaea9
MRC_board samus
MRC_refcode_cbtree coreboot413
MRC_refcode_gbe 131253
}
{hp8200sff}{
DL_hash 8fcb691bf84dc1feefc3c84f7cc59eadaabb200477bb3ecba1b050f23f133b0a8c2539015a523f676544c2dff64599bcba7e844e8c31757b90d70bb4485b5664
DL_url https://ftp.ext.hp.com/pub/softpaq/sp96001-96500/sp96026.exe