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Message-Id: <20200407082923.2001556-1-patrick.rudolph@9elements.com>
Date: Tue, 7 Apr 2020 10:29:05 +0200
From: patrick.rudolph@...ements.com
To: linux-kernel@...r.kernel.org
Cc: coreboot@...eboot.org,
Patrick Rudolph <patrick.rudolph@...ements.com>,
Thomas Gleixner <tglx@...utronix.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alexios Zavras <alexios.zavras@...el.com>,
Allison Randal <allison@...utok.net>,
Julius Werner <jwerner@...omium.org>,
Samuel Holland <samuel@...lland.org>,
Stephen Boyd <swboyd@...omium.org>
Subject: [PATCH v4 0/2] firmware: google: Expose coreboot tables and CBMEM
From: Patrick Rudolph <patrick.rudolph@...ements.com>
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
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