[+Benjamin Fair] Hi Greg, This hardware is working in the same manner that Aspeed lpc snooping driver (/drivers/misc/aspeed-lpc-snoop.c) On 16 July 2018 at 14:33, Greg KH wrote: > On Wed, Jul 04, 2018 at 12:14:27PM +0300, Tomer Maimon wrote: > > Add Nuvoton BMC NPCM7xx BIOS post code (BPC) driver. > > > > The NPCM7xx BPC monitoring two I/O address written by > > the host on the Low Pin Count (LPC) bus, the capure > > data stored in 128-word FIFO. > > > > Signed-off-by: Tomer Maimon > > It would be great to get someone else who knows that this hardware is > supposed to be doing to ack or sign-off on this patch, as I don't know > if this really is providing the correct api for it or not. > Joel could you sign-off this patch please. Right now it's just reading data from the hardware, what good is that? > Who uses this? What userspace tools connect up to it? > BMC is logging a configurable I/O port (for example 0x80 port which is BIOS post code) and remote management can get. about tools, the OpenBMC is using it. https://github.com/openbmc/phosphor-host-postd > thanks, > > greg k-h > thanks, Tomer