This patch fixes the decoding of the IO address range 0x0820->0x0827 into the LPC device of the MCP55 southbridge, thus enabling flashrom access to the SPI interface of the IT8716 SIO chip. Changes : 1) - increase MAX_RESOURCES to 24 in device.h -> this was needed because some functions of a PNP device can have more than 12 resources (ex the GPIO function of IT8716f), in which case one could have an "array overflow" inside the device structure (yes gcc is stupid!..) and ultimately a disaster (fool pointer at device init time..) 2) - define resource masks for the GPIO function in src/superio/ite/it8716f/superio.c -> this is needed because otherwise the IO ranges which are set into the LPC bridge of the SB are very strange (f.ex.: 0x800->0x7ff and so on..). Problem: the PNP_IO0 resource is not defined for the GPIO function, thus we have to define a "fake" mask "{0,0}" to avoid mismatching by the init code 3) - enable the flash SPI interface into src/mainboard/gigabyte/m57sli/Config.lb (by enabling the corresponding resource into the GPIO function). I know that this is problematic because not all m57sli boards are SPI, but .. do anyone have a better idea how to handle this?..
Signed-off-by: Florentin Demetrescu echelon@free.fr
Patch file attached.
Thanks, Florentin
PS: By the way, with all due respect, Gentlemen, I think that keeping 2 (potentially incoherent) sets of resource definitions for PNP devices in 2 different places (<mobo>/Config.lb vs. <sio>/superio.c) is trully brain dammaging.. Juste my 2 (euro-)cents