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Timothy Pidashev
2026-04-14 08:56:51 -07:00
parent 9965bd3529
commit de546d6ff0
2 changed files with 12 additions and 7 deletions
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public/scripts

Submodule public/scripts updated: aaa53d6a09...21af45674e

17
src/content/blog/thinkpad-t440p-coreboot-guide.mdx
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@@ -119,7 +119,7 @@ If the diff checks pass, combine both files into one ROM.
<Command
description="Combine 4MB & 8MB into one ROM"
command="cat 8mb_backup_1.bin 4mb_backup1.bin > t440p-original.rom"
command="cat 8mb_backup1.bin 4mb_backup1.bin > t440p-original.rom"
client:load
/>
@@ -140,7 +140,7 @@ a new bios image.
client:load
/>
We will need to build `idftool`, which will be used to export all necessary blobs
We will need to build `ifdtool`, which will be used to export all necessary blobs
from our original bios, and `cbfstool`, which will be used to extract __mrc.bin__(a blob
from a haswell chromebook peppy image).
@@ -258,9 +258,14 @@ Then open the configuration menu:
Key settings to configure:
- **Mainboard** &rarr; Mainboard vendor: **Lenovo** &rarr; Mainboard model: **ThinkPad T440p**
- **Chipset** &rarr; Add Intel descriptor.bin, ME firmware, and GbE configuration (set paths to your blobs)
- **Chipset** &rarr; Add haswell MRC file (set path to mrc.bin)
- **Payload** &rarr; Choose your preferred payload (GRUB2, SeaBIOS, or edk2)
(`CONFIG_BOARD_LENOVO_THINKPAD_T440P=y`)
- **Chipset** &rarr; Add Intel descriptor.bin (`CONFIG_HAVE_IFD_BIN`), ME firmware (`CONFIG_HAVE_ME_BIN`),
and GbE configuration (`CONFIG_HAVE_GBE_BIN`) — set paths to your extracted blobs.
- **Chipset** &rarr; Add Haswell MRC file (`CONFIG_HAVE_MRC` / `CONFIG_MRC_FILE`) — set path to `mrc.bin`.
- **Payload** &rarr; Choose your preferred payload: GRUB2 (`CONFIG_PAYLOAD_GRUB2`), SeaBIOS
(`CONFIG_PAYLOAD_SEABIOS`), or Tianocore/edk2 (`CONFIG_PAYLOAD_TIANOCORE`).
- **Devices** &rarr; (optional, GT730M only) Enable `CONFIG_VGA_BIOS_DGPU` and set
`CONFIG_VGA_BIOS_DGPU_FILE` to your extracted GT730M VBIOS (PCI ID `10de,1292`).
## Building and Flashing
@@ -344,7 +349,7 @@ Reboot to apply `iomem=relaxed`
<Command
description="Flash the original bios"
command="sudo flashrom -p internal:laptop=force_I_want_a_brick -r ~/t440p-coreboot/t440p-original.rom"
command="sudo flashrom -p internal:laptop=force_I_want_a_brick -w ~/t440p-coreboot/t440p-original.rom"
/>
And that about wraps it up! If you liked the guide, leave a reaction or comment any changes or fixes