Board:lenovo/t420s: Difference between revisions
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Issues: | Issues: | ||
* yellow USB port isn't powered in power-off state. | * yellow USB port isn't powered in power-off state. | ||
* for i7 / Discrete GPU model - DisplayPort only connected to Discrete GPU -> does not work | * for i7 / Discrete GPU model - DisplayPort only connected to Discrete GPU -> does not work | ||
* Boot time issues after reboot (keyboard rest timeout) | * Boot time issues after reboot (keyboard rest timeout) | ||
* ultrabay hot plug (event missing?) | * ultrabay hot plug (event missing?) | ||
Revision as of 13:23, 7 July 2017
Status
Intel_Native_Raminit has it's own status page.
Issues:
- yellow USB port isn't powered in power-off state.
- for i7 / Discrete GPU model - DisplayPort only connected to Discrete GPU -> does not work
- Boot time issues after reboot (keyboard rest timeout)
- ultrabay hot plug (event missing?)
- some power management states missing?
- windows not supported
Proprietary Components Status
- CPU Microcode
- FDT(Flash Descriptor Table) => Always needed
- ME(Management Engine) => you do not have to touch it(just leave it where it is)
- GbE(Gigabit Ethernet embedded mac) => you do not have to touch it(just leave it where it is)
Code
{{ #if: | * [{{{review_url}}} The code has been merged into coreboot master]: | * The code has been merged into coreboot master:}}
$ git clone https://review.coreboot.org/coreboot.git
Building Firmware
Please have a look at Intel_Sandybridge_Build_Tutorial.
Flashing
The flash chip can be a 8MB SOIC8 (Macronix MX25L6436EM2I / MX25L6406EM2I / Winbond W25Q64CVS) or WSON8 (Numonyx M25PX64).
Vendor firmware locks the flash and so you need to flash externally (unless until someone figures out a way around it). Lenovo firmware uses "protected regions" to protect the bootblock.