add thinkpad_acpi notices for the T440p, W541 and T480/T480s
ezntek
parent
0eb22b1fa8
commit
da5734ac34
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@ -99,6 +99,14 @@ You should now be able to see the two flash chips near the RAM.\
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You can now proceed to [flashing](/docs/install/spi.html) this machine.
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`thinkpad_acpi` issues {#thinkpad-acpi}
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---------------------------------------
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It has been reported by that `thinkpad_acpi` does not load correctly on the T440p.
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If you encounter this, check [this page](https://libreboot.org/faq#thinkpad-acpi)
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for details as to how to fix this.
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Errata
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======
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@ -1,9 +1,9 @@
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---
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title: Lenovo ThinkPad T480/T480S information
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title: Lenovo ThinkPad T480/T480s information
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x-toc-enable: true
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...
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Libreboot supports both the T480 and T480S variants. It is available in
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Libreboot supports both the T480 and T480s variants. It is available in
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the *Libreboot 20241206* release or later.
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**[PLEASE READ THESE INSTRUCTIONS BEFORE INSTALLING](../../news/safety.md),
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@ -16,19 +16,19 @@ OR YOU MIGHT BRICK YOUR MACHINE: [SAFETY PRECAUTIONS](../../news/safety.md)**
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| ***Specifications*** | |
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|----------------------------|------------------------------------------------|
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| **Manufacturer** | Lenovo |
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| **Name** | ThinkPad T480 |
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| **Variants** | ThinkPad T480, ThinkPad T480S |
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| **Manufacturer** | Lenovo |
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| **Name** | ThinkPad T480 |
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| **Variants** | ThinkPad T480, ThinkPad T480s |
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| **Released** | 2018 |
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| **Chipset** | Intel Kaby Lake Refresh |
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| **CPU** | Intel Kaby Lake Refresh |
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| **Graphics** | Intel or Intel+Nvidia |
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| **Memory** | DDR4 DIMMs; max 40GB (T480S), 64GB(T480) |
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| **Architecture** | x86\_64 |
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| **Original boot firmware** | Lenovo UEFI firmware |
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| **Intel ME/AMD PSP** | Present. Can be disabled with me\_cleaner. |
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| **Intel Boot Guard** | [Pwned](deguard.md). Disabled using the deguard utility. |
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| **Flash chip** | SOIC-8 16MB/128Mbit system firmware |
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| **Chipset** | Intel Kaby Lake Refresh |
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| **CPU** | Intel Kaby Lake Refresh |
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| **Graphics** | Intel or Intel+Nvidia |
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| **Memory** | DDR4 DIMMs; max 40GB (T480s), 64GB(T480) |
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| **Architecture** | x86\_64 |
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| **Original boot firmware** | Lenovo UEFI firmware |
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| **Intel ME/AMD PSP** | Present. Can be disabled with me\_cleaner. |
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| **Intel Boot Guard** | [Pwned](deguard.md). Disabled using the deguard utility.|
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| **Flash chip** | SOIC-8 16MB/128Mbit system firmware |
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```
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@ -43,9 +43,9 @@ P*: Partially works with blobs
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| ***Features*** | |
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|---------------------------------------------------|----|
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| **Internal flashing with original boot firmware** | N |
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| **Internal flashing with original boot firmware** | N |
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| **Display (if Intel GPU)** | W+ |
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| **Display (discrete CPU, SeaBIOS payload only)** | N |
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| **Display (discrete CPU, SeaBIOS payload only)** | N |
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| **Audio** | W+ |
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| **RAM Init** | W* |
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@ -56,7 +56,7 @@ P*: Partially works with blobs
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| **SeaBIOS with GRUB** | Works |
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</div>
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Regarding memory: T480S (S model) has 8GB onboard RAM, and an available DIMM
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Regarding memory: T480s (S model) has 8GB onboard RAM, and an available DIMM
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slot on which an additional 32GB SODIMM can be installed. The regular T480
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has two DIMM slots, allowing 2x32GB DDR4 SODIMMs.
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@ -74,10 +74,10 @@ source](../build/), or alternatively an image from Libreboot 20241206 or higher.
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Official information about the T480 can be found here:\
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<https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_T480/ThinkPad_T480_Spec.PDF>
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...and information about the T480S can be found here:\
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...and information about the T480s can be found here:\
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<https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_T480s/ThinkPad_T480s_Spec.pdf>
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This port is implemented in Libreboot by merging Mate Kukri's T480/T480S
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This port is implemented in Libreboot by merging Mate Kukri's T480/T480s
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patchset. See: <https://review.coreboot.org/c/coreboot/+/83274> - as of 5
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December 2024, Libreboot's code matches that of patchset 22.
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@ -118,6 +118,16 @@ you've inserted manually.
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If it says "Unplugged", try it anyway. The HDA Verb may be incorrect. This
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will be investigated and a hotfix patch made to the Libreboot 20241206 images.
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`thinkpad_acpi` issues {#thinkpad-acpi}
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---------------------------------------
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It has been reported that `thinkpad_acpi` does not load correctly on the T480.
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This should also be the case for the T480s.
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If you encounter this issue, check
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[this page](https://libreboot.org/faq#thinkpad-acpi) for details at so how
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to fix this.
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Build ROM image from source
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---------------------------
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@ -126,7 +136,7 @@ The build target, when building from source, is thus:
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./mk -b coreboot t480_fsp_16mb
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./mk -b coreboot t480s_fsp_16mb
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**NOTE: The T480 and T480S may be similar, but they do have several critical
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**NOTE: The T480 and T480s may be similar, but they do have several critical
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differences in their wiring, so you MUST flash the correct image. Please
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choose one of the above build targets accordingly.**
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@ -161,7 +171,7 @@ Absolutely unsigned Intel ME!
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-----------------------------
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Libreboot already disables the Intel ME by default, using `me_cleaner`, but
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the T480/T480S specifically have an additional quirk:
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the T480/T480s specifically have an additional quirk:
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One of the benefits of [deguard](deguard.md) for Intel MEv11 is that it sets
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the ME in such a state where you can run unsigned code in there. This is how
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@ -170,7 +180,7 @@ restrictions; more information about deguard is available on a dedicated page.
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The deguard utility could also be used to enable the red-unlock hack, which
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would permit unsigned execution of new CPU microcode, though much more
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research is needed. Because of these two facts, this makes the T480/T480S the
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research is needed. Because of these two facts, this makes the T480/T480s the
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most freedom-feasible of all relatively modern x86 laptops.
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With deguard, you have complete control of the flash. This is unprecedented on
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@ -279,12 +289,12 @@ which then allows you to see the inner mainboard:
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<img tabindex=1 alt="ThinkPad T480 PCB" class="p" src="https://av.libreboot.org/t480/t480pcb.jpg" /><span class="f"><img src="https://av.libreboot.org/t480/t480pcb.jpg" /></span>
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**WARNING: PLEASE MAKE SURE to remove the battery before flashing. The T480
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and T480S can both contain INTERNAL batteries, and the T480 has an additional
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and T480s can both contain INTERNAL batteries, and the T480 has an additional
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external battery. Remove the internal battery via the connector, like so (T480):**
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<img tabindex=1 alt="ThinkPad T480 internal battery" class="p" src="https://av.libreboot.org/t480/t480battery.jpg" /><span class="f"><img src="https://av.libreboot.org/t480/t480battery.jpg" /></span>
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On the T480S (S model) the internal battery is much larger, and the connector
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On the T480s (S model) the internal battery is much larger, and the connector
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on it is built into the battery, so it is necessary to carefully remove the
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entire battery; on regular T480 (non-S model) the internal battery can be
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isolated via the connector as depicted above.
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@ -302,7 +312,7 @@ To be clear: the system flash (16MB) is what you put Libreboot on. The
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Thunderbolt firmware flash is much smaller, so you'll know because flashprog
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will complain about wrong flash size if you're trying to flash the wrong one.
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On the T480S (S model), the flashes are in slightly different places but in
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On the T480s (S model), the flashes are in slightly different places but in
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both machines, the system flash (for Libreboot) is toward the centre, near
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the memory.
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@ -320,7 +330,7 @@ UART
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----
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A serial console is possible via the line-out (headphone jack). Not yet tested
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on the T480S (S model), nor implemented, but it is working on the regular
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on the T480s (S model), nor implemented, but it is working on the regular
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T480 (non-S model).
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**TODO: show photo and wiring diagram here.**
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@ -343,7 +353,7 @@ TX/RX lines as you wish, to a suitable UART adapter; any 3.3v-rated TTL
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adapter should work. The Raspberry Pi Pico can be used for this, which is handy
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because that can also be used as a serprog-based NOR flasher!
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The T480S (S model) schematics is a bit different and the signals are
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The T480s (S model) schematics is a bit different and the signals are
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properly muxed. Note that this is not to be confused with `spkmodem`, which
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has not been tested on these boards (but could theoretically be possible too).
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@ -359,7 +369,7 @@ possible, quite feasible to design/manufacture and already supported in the
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Libreboot firmware in principle, since than PCI-E lane is enabled in the devicetree)
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Mate Kukri came up with this idea. It's a great idea, so it's written here.
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This mod is possible on both the T480 and T480S, though on T480S there would
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This mod is possible on both the T480 and T480s, though on T480s there would
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be less clearance; using a smaller internal battery and having a makeshift
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NVMe caddy in the remaining space would be how to go about it there. On the
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regular T480, the existing caddy area could easily fit two NVMe drives.
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@ -367,7 +377,7 @@ regular T480, the existing caddy area could easily fit two NVMe drives.
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Errata
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======
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On ThinkPad T480/T480S, headphone output works; the internal speaker is disabled
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On ThinkPad T480/T480s, headphone output works; the internal speaker is disabled
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but audio is not automatically redirected to the headphone jack. This switching
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can be done manually, for example in the `pavucontrol` utility:
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@ -3,8 +3,8 @@ title: ThinkPad W541/W540 external flashing
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x-toc-enable: true
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...
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NOTE: The same image for W541 also works on W541, as it's the exact same
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mainboard.
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NOTE: The same image for W541 also works on the W540, as the motherboard is
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identical.
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Buy Libreboot preinstalled
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==========================
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@ -117,6 +117,16 @@ used when flashing either of the chips.
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You can now proceed to [flashing](/docs/install/spi.html) this machine.
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`thinkpad_acpi` issues {#thinkpad-acpi}
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---------------------------------------
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It has been reported by a user that `thinkpad_acpi` does not load correctly on
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the T440p. Since the W541/W540/T540p are also haswell machines, you may be
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affected by this issue.
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If you encounter this, check [this page](https://libreboot.org/faq#thinkpad-acpi)
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for details as to how to fix this.
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Errata
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======
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45
site/faq.md
45
site/faq.md
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@ -17,7 +17,7 @@ sure to re-enable them after you're finished.
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See: [Disabling /dev/mem protection](docs/install/devmem.md)
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Buy Libreboot pre-installed
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==========
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=============================
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If you want professional installation, Minifree Ltd sells [Libreboot
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pre-installed](https://minifree.org/) on select hardware, and it also provides
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@ -169,7 +169,7 @@ Hardware compatibility
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======================
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What systems are compatible with libreboot?
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-----------------------------------------------------------------------------------
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--------------------------------------------
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Any system can easily be added, so *compatibility* merely refers to whatever
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boards are integrated in the `lbmk` build system, which libreboot uses.
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@ -576,7 +576,7 @@ This will change the default inside that ROM image, and then you can
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re-flash it.
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How do I pad a ROM before flashing?
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--------------------------------------
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-------------------------------------
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It is advisable to simply use a larger ROM image. This section was written
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mostly for ASUS KCMA-D8 and KGPE-D16 mainboards, where previously we only
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@ -616,7 +616,7 @@ padded 16MiB image do the following:
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With padding removed cbfstool will be able to operate on the image as usual.
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Do I need to install a bootloader when installing a distribution?
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---------------------------------------------------------------------------------------------------
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-----------------------------------------------------------------
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Most libreboot setups integrate the GRUB bootloader already, as a
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*[payload](http://www.coreboot.org/Payloads)*. This means that the GRUB
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@ -635,7 +635,7 @@ then the normal MBR bootsector is used on your HDD or SSD, like you would
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expect. So the above paragraphs only apply to the GRUB payload.
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Do I need to re-flash when I re-install a distribution?
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-------------------------------------------------------------------------------------------
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-------------------------------------------------------
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Not anymore. Recent versions of libreboot (using the GRUB payload) will
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automatically switch to a GRUB configuration on the HDD or SSD, if it
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@ -653,26 +653,39 @@ What does a flash chip look like?
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You can find photos of various chip types on the following page:\
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[External 25xx NOR flashing guide](docs/install/spi.md)
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Inability to modprobe thinkpad\_acpi on Haswell
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===============================================
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Inability to load `thinkpad_acpi` on post-haswell systems {#thinkpad-acpi}
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==========================================================================
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This was reported by a user, running Debian 11 with
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kernel `5.19.0-0.deb11.2-amd64`. The `thinkpad_acpi` module was not loading,
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with the following message:
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Reported by a user on Debian 11 (on a ThinkPad T440p) and a user
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on Void Linux (ThinkPad T480), Linux may fail to load `thinkpad_acpi`.
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```
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modprobe: ERROR: could not insert 'thinkpad_acpi': "No such device"
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```
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It is suspected that at least these mainboards are affected:
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Battery info in `/sys` was absent, because of this. The user reported that
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the following workaround was effective (in Debian).
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* [ThinkPad W541](https://libreboot.org/docs/install/w541_external.html)
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* [ThinkPad T440p](https://libreboot.org/docs/install/t440p_external.html)
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* [ThinkPad T480/T480s](https://libreboot.org/docs/install/t480.html)
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Add this line to `/etc/modprobe.d/thinkpad_acpi.conf`:
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This may result the following effects, including or not limited to:
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* Temperature reporting not working
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* Battery info not working.
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* Fan speed reporting not working
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* Fan control not working
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For these systems, add the line
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```
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options thinkpad_acpi force_load=1
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```
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to any file in `/etc/modprobe.d`. You can also add
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```
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thinkpad_acpi.force_load=1
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```
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to your kernel parameters (in GRUB, or your preferred linux-capable bootloader).
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tlp
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---
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