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NEW MAINBOARD: ThinkPad T480S

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Added t480s delta to deguard, for MFS config.

Updated coreboot/next to latest t480 patch set,
which includes t480s. This porting was done by
Mate Kukri.

also includes experimental t480s support

Also added a data.vbt file (not in the gerrit patch)
for the T480s.

I had to turn on 8254 legacy timer on t480s, otherwise
SeaBIOS would hang. Same issue I saw on OptiPlex 3050 Micro.

Minor issue:

On S3 resume, nvme0n1 for example got renamed to nvme0n2.
This caused a crash if running Linux from the nvme. I confirmed
this via live USB distro. So this port will need some tweaking
before it can be considered stable.

Also uses libgfxinit, which Mate recently fixed. I'm
going to enable libgfxinit on regular T480 next.

Signed-off-by: Leah Rowe <leah@libreboot.org>
This commit is contained in:
Leah Rowe
2024-12-02 02:01:09 +00:00
parent 264928c6cd
commit c1b7326972
20 changed files with 2577 additions and 103 deletions
Download Patch File Download Diff File Expand all files Collapse all files
config/coreboot/t480_fsp_16mb/config/normal
+2
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@@ -177,6 +177,7 @@ CONFIG_HAVE_IFD_BIN=y
# CONFIG_BOARD_LENOVO_S230U is not set
# CONFIG_BOARD_LENOVO_E460 is not set
CONFIG_BOARD_LENOVO_T480=y
# CONFIG_BOARD_LENOVO_T480S is not set
# CONFIG_BOARD_LENOVO_T400 is not set
# CONFIG_BOARD_LENOVO_T500 is not set
# CONFIG_BOARD_LENOVO_R400 is not set
@@ -576,6 +577,7 @@ CONFIG_PCI_ALLOW_BUS_MASTER_ANY_DEVICE=y
CONFIG_SUBSYSTEM_VENDOR_ID=0x0000
CONFIG_SUBSYSTEM_DEVICE_ID=0x0000
# CONFIG_VGA_BIOS_DGPU is not set
CONFIG_INTEL_GMA_HAVE_VBT=y
# CONFIG_INTEL_GMA_ADD_VBT is not set
# CONFIG_SOFTWARE_I2C is not set
CONFIG_I2C_TRANSFER_TIMEOUT_US=500000