From: Patrick Rudolph <[email protected]>
As user land tools currently use /dev/mem to access coreboot tables and
CBMEM, provide a better way by using read-only sysfs attributes.
Unconditionally expose all tables and buffers making future changes in
coreboot possible without modifying a kernel driver.
Changes in v2:
- Add ABI documentation
- Add 0x prefix on hex values
- Remove wrong ioremap hint as found by CI
Changes in v3:
- Use BIN_ATTR_RO
Changes in v4:
- Use temporary memremap instead of persistent ioremap
- Constify a struct
- Get rid of unused headers
- Use dev_{get|set}_drvdata
- Use dev_groups to automatically handle attributes
- Updated file description
- Updated ABI documentation
Patrick Rudolph (2):
firmware: google: Expose CBMEM over sysfs
firmware: google: Expose coreboot tables over sysfs
Documentation/ABI/stable/sysfs-bus-coreboot | 74 +++++++++++
drivers/firmware/google/Kconfig | 9 ++
drivers/firmware/google/Makefile | 1 +
drivers/firmware/google/cbmem-coreboot.c | 128 ++++++++++++++++++++
drivers/firmware/google/coreboot_table.c | 58 +++++++++
drivers/firmware/google/coreboot_table.h | 14 +++
6 files changed, 284 insertions(+)
create mode 100644 Documentation/ABI/stable/sysfs-bus-coreboot
create mode 100644 drivers/firmware/google/cbmem-coreboot.c
--
2.24.1
_______________________________________________
coreboot mailing list -- [email protected]
To unsubscribe send an email to [email protected]
