1# SPDX-License-Identifier: GPL-2.0-only 2menuconfig GOOGLE_FIRMWARE 3 bool "Google Firmware Drivers" 4 default n 5 help 6 These firmware drivers are used by Google servers, 7 Chromebooks and other devices using coreboot firmware. 8 If in doubt, say "N". 9 10if GOOGLE_FIRMWARE 11 12config GOOGLE_SMI 13 tristate "SMI interface for Google platforms" 14 depends on X86 && ACPI && DMI 15 help 16 Say Y here if you want to enable SMI callbacks for Google 17 platforms. This provides an interface for writing to and 18 clearing the event log. If CONFIG_EFI is also enabled this 19 driver provides an interface for reading and writing NVRAM 20 variables. 21 22config GOOGLE_COREBOOT_TABLE 23 tristate "Coreboot Table Access" 24 depends on HAS_IOMEM && (ACPI || OF) 25 help 26 This option enables the coreboot_table module, which provides other 27 firmware modules access to the coreboot table. The coreboot table 28 pointer is accessed through the ACPI "GOOGCB00" object or the 29 device tree node /firmware/coreboot. 30 If unsure say N. 31 32config GOOGLE_COREBOOT_TABLE_ACPI 33 tristate 34 select GOOGLE_COREBOOT_TABLE 35 36config GOOGLE_COREBOOT_TABLE_OF 37 tristate 38 select GOOGLE_COREBOOT_TABLE 39 40config GOOGLE_MEMCONSOLE 41 tristate 42 depends on GOOGLE_MEMCONSOLE_X86_LEGACY || GOOGLE_MEMCONSOLE_COREBOOT 43 44config GOOGLE_MEMCONSOLE_X86_LEGACY 45 tristate "Firmware Memory Console - X86 Legacy support" 46 depends on X86 && ACPI && DMI 47 select GOOGLE_MEMCONSOLE 48 help 49 This option enables the kernel to search for a firmware log in 50 the EBDA on Google servers. If found, this log is exported to 51 userland in the file /sys/firmware/log. 52 53config GOOGLE_FRAMEBUFFER_COREBOOT 54 tristate "Coreboot Framebuffer" 55 depends on FB_SIMPLE 56 depends on GOOGLE_COREBOOT_TABLE 57 help 58 This option enables the kernel to search for a framebuffer in 59 the coreboot table. If found, it is registered with simplefb. 60 61config GOOGLE_MEMCONSOLE_COREBOOT 62 tristate "Firmware Memory Console" 63 depends on GOOGLE_COREBOOT_TABLE 64 select GOOGLE_MEMCONSOLE 65 help 66 This option enables the kernel to search for a firmware log in 67 the coreboot table. If found, this log is exported to userland 68 in the file /sys/firmware/log. 69 70config GOOGLE_VPD 71 tristate "Vital Product Data" 72 depends on GOOGLE_COREBOOT_TABLE 73 help 74 This option enables the kernel to expose the content of Google VPD 75 under /sys/firmware/vpd. 76 77endif # GOOGLE_FIRMWARE 78