diff options
Diffstat (limited to 'drivers/firmware/google/Kconfig')
| -rw-r--r-- | drivers/firmware/google/Kconfig | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/drivers/firmware/google/Kconfig b/drivers/firmware/google/Kconfig new file mode 100644 index 0000000000..41b78f5cb7 --- /dev/null +++ b/drivers/firmware/google/Kconfig @@ -0,0 +1,84 @@ +# SPDX-License-Identifier: GPL-2.0-only +menuconfig GOOGLE_FIRMWARE + bool "Google Firmware Drivers" + default n + help + These firmware drivers are used by Google servers, + Chromebooks and other devices using coreboot firmware. + If in doubt, say "N". + +if GOOGLE_FIRMWARE + +config GOOGLE_SMI + tristate "SMI interface for Google platforms" + depends on X86 && ACPI && DMI + help + Say Y here if you want to enable SMI callbacks for Google + platforms. This provides an interface for writing to and + clearing the event log. If CONFIG_EFI is also enabled this + driver provides an interface for reading and writing NVRAM + variables. + +config GOOGLE_CBMEM + tristate "CBMEM entries in sysfs" + depends on GOOGLE_COREBOOT_TABLE + help + CBMEM is a downwards-growing memory region created by the + Coreboot BIOS containing tagged data structures from the + BIOS. These data structures expose things like the verified + boot firmware variables, flash layout, firmware event log, + and more. + + This option enables the cbmem module, which causes the + kernel to search for Coreboot CBMEM entries, and expose the + memory for each entry in sysfs under + /sys/bus/coreboot/devices/cbmem-<id>. + +config GOOGLE_COREBOOT_TABLE + tristate "Coreboot Table Access" + depends on HAS_IOMEM && (ACPI || OF) + help + This option enables the coreboot_table module, which provides other + firmware modules access to the coreboot table. The coreboot table + pointer is accessed through the ACPI "GOOGCB00" object or the + device tree node /firmware/coreboot. + If unsure say N. + +config GOOGLE_MEMCONSOLE + tristate + depends on GOOGLE_MEMCONSOLE_X86_LEGACY || GOOGLE_MEMCONSOLE_COREBOOT + +config GOOGLE_MEMCONSOLE_X86_LEGACY + tristate "Firmware Memory Console - X86 Legacy support" + depends on X86 && ACPI && DMI + select GOOGLE_MEMCONSOLE + help + This option enables the kernel to search for a firmware log in + the EBDA on Google servers. If found, this log is exported to + userland in the file /sys/firmware/log. + +config GOOGLE_FRAMEBUFFER_COREBOOT + tristate "Coreboot Framebuffer" + depends on FB_SIMPLE || DRM_SIMPLEDRM + depends on GOOGLE_COREBOOT_TABLE + help + This option enables the kernel to search for a framebuffer in + the coreboot table. If found, it is registered with simplefb. + +config GOOGLE_MEMCONSOLE_COREBOOT + tristate "Firmware Memory Console" + depends on GOOGLE_COREBOOT_TABLE + select GOOGLE_MEMCONSOLE + help + This option enables the kernel to search for a firmware log in + the coreboot table. If found, this log is exported to userland + in the file /sys/firmware/log. + +config GOOGLE_VPD + tristate "Vital Product Data" + depends on GOOGLE_COREBOOT_TABLE + help + This option enables the kernel to expose the content of Google VPD + under /sys/firmware/vpd. + +endif # GOOGLE_FIRMWARE |