CONFIG_FW_CFG_SYSFS: QEMU fw_cfg device support in sysfs

General informations

The Linux kernel configuration item CONFIG_FW_CFG_SYSFS:

• prompt: QEMU fw_cfg device support in sysfs
• type: tristate
• depends on: ( CONFIG_SYSFS && ( CONFIG_ARM || CONFIG_ARM64 || CONFIG_PARISC || CONFIG_PPC_PMAC || CONFIG_RISCV || CONFIG_SPARC || CONFIG_X86 )) && ( CONFIG_HAS_IOPORT_MAP )
• defined in drivers/firmware/Kconfig
• found in Linux kernels: 4.6–4.20, 5.0–5.19, 6.0–6.11, 6.12-rc+HEAD
• modules built: qemu_fw_cfg

Help text

Say Y or M here to enable the exporting of the QEMU firmware configuration (fw_cfg) file entries via sysfs. Entries are found under /sys/firmware/fw_cfg when this option is enabled and loaded.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb acpi "QEMU0002" : CONFIG_FW_CFG_SYSFS : drivers/firmware/qemu_fw_cfg.c # in 4.6–4.20, 5.0–5.19, 6.0–6.11, 6.12-rc+HEAD
• lkddb module qemu_fw_cfg CONFIG_FW_CFG_SYSFS : drivers/firmware/Kconfig : "QEMU fw_cfg device support in sysfs" # in 4.6–4.20, 5.0–5.19, 6.0–6.11, 6.12-rc+HEAD
• lkddb of "" "" "qemu,fw-cfg-mmio" : CONFIG_FW_CFG_SYSFS : drivers/firmware/qemu_fw_cfg.c # in 4.6–4.20, 5.0–5.19, 6.0–6.11, 6.12-rc+HEAD
• lkddb platform "fw_cfg" : CONFIG_FW_CFG_SYSFS : drivers/firmware/qemu_fw_cfg.c # in 4.6–4.20, 5.0–5.19, 6.0–6.11, 6.12-rc+HEAD

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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