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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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