Lenovo ThinkPad W541
laptop/lenovo/w541 (platform)
| Property | Description |
|---|---|
| Manufacturer | Lenovo |
| Model | ThinkPad W541 |
| Year | 2015 |
| Max CPU | Intel Core i7-4940MX |
| Max RAM | 32GB 4x8GB DDR3L-1600 SODIMM |
| Image | credit to laptopid.ee (https://laptopid.ee/images/product/141/213/original.png) |
| Software: User-Facing Environment | Free |
| Software: Operating System | Free |
| Software: Bootloader/Recovery | Free |
| Firmware: Persistent Privileged Code (e.g. x86 SMM) | Free (Coreboot) |
| Firmware: Late Boot/Payload | Free (SeaBIOS, etc.) |
| Firmware: Platform Initialization | Free (Coreboot) |
| Firmware: Memory Initialization | Free (Coreboot Haswell NRI) |
| Firmware: Early Boot (incl. RoT) | Free (Coreboot) |
| Firmware: Boot ROM | None x86 CPUs don't have true "software" boot ROMs in mask ROM (such as those in many ARM SoCs).
Most x86 platforms map the firmware in SPI flash directly into address space at the reset vector, where it can be executed in-place. Prior to this, some early
initialization may be performed by the ROM microcode, or by coprocessors (such as the ME/PSP) if present. |
| Firmware Signing | For ME Only |
| CPU Microcode | Proprietary All current x86 CPUs use proprietary microcode, stored in mask ROM in the CPU itself.
Additional updates to this microcode can be temporarily loaded by firmware and/or the OS. |
| Management Coprocessor: Firmware | Proprietary, mostly disabled (ME Gen2) On ME versions between 5 and 11 (Nehalem to Broadwell), sometimes called "ME Generation 2", nearly the entire ME image can be removed, leaving only two modules - ROMP and BUP - totaling 90 kB out of a normal 1.5 - 5 MB.
With these modules removed, the ME remains in its BUP state and does not execute its kernel or normal ME functions, leaving it effectively disabled.
The AltMeDisable ("HAP") bit can also be used on these MEs. |
| Communications Coprocessor: Internal Firmware | WLAN proprietary, but card is removable |
| Communications Coprocessor: Host-Loaded Firmware | Unnecessary with some cards (e.g. ath9k) |
| Security Coprocessor: Firmware | Proprietary, but use of it is optional (TPM) |
| Embedded Controller: Firmware | Proprietary |
| Hardware: Board Electrical Schematic | Proprietary, but often available online |
| Hardware: Board PCB Design | Proprietary, but boardview often available |
| Hardware: CPU Instruction Set | Proprietary (x86_64) |
| Hardware: CPU/SoC Implementation | Proprietary (Intel Haswell) |
| Hardware: CPU/SoC Synthesis Toolchain | Proprietary |
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