diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2018-02-28 16:06:11 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2018-03-20 03:17:40 +0200 |
| commit | 1f57bc12d87dda2d56b564d35f21b9e6bdb2bb2c (patch) | |
| tree | d4571d43aab1c544819799cb1ebe9deffde49e24 /drivers/firmware/qemu_fw_cfg.c | |
| parent | b1cc4097d15c29725060f86ecec20a1e635a541f (diff) | |
fw_cfg: add a public uapi header
Create a common header file for well-known values and structures to be
shared by the Linux kernel with qemu or other projects.
It is based from qemu/docs/specs/fw_cfg.txt which references
qemu/include/hw/nvram/fw_cfg_keys.h "for the most up-to-date and
authoritative list" & vmcoreinfo.txt. Those files don't have an
explicit license, but qemu/hw/nvram/fw_cfg.c is BSD-license, so
Michael S. Tsirkin suggested to use the same license.
The patch intentionally left out DMA & vmcoreinfo structures &
defines, which are added in the commits making usage of it.
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/firmware/qemu_fw_cfg.c')
| -rw-r--r-- | drivers/firmware/qemu_fw_cfg.c | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c index 45bfc389b226..5de6bb406fb6 100644 --- a/drivers/firmware/qemu_fw_cfg.c +++ b/drivers/firmware/qemu_fw_cfg.c @@ -32,30 +32,12 @@ #include <linux/slab.h> #include <linux/io.h> #include <linux/ioport.h> +#include <uapi/linux/qemu_fw_cfg.h> MODULE_AUTHOR("Gabriel L. Somlo <somlo@cmu.edu>"); MODULE_DESCRIPTION("QEMU fw_cfg sysfs support"); MODULE_LICENSE("GPL"); -/* selector key values for "well-known" fw_cfg entries */ -#define FW_CFG_SIGNATURE 0x00 -#define FW_CFG_ID 0x01 -#define FW_CFG_FILE_DIR 0x19 - -/* size in bytes of fw_cfg signature */ -#define FW_CFG_SIG_SIZE 4 - -/* fw_cfg "file name" is up to 56 characters (including terminating nul) */ -#define FW_CFG_MAX_FILE_PATH 56 - -/* fw_cfg file directory entry type */ -struct fw_cfg_file { - u32 size; - u16 select; - u16 reserved; - char name[FW_CFG_MAX_FILE_PATH]; -}; - /* fw_cfg device i/o register addresses */ static bool fw_cfg_is_mmio; static phys_addr_t fw_cfg_p_base; @@ -616,7 +598,7 @@ MODULE_DEVICE_TABLE(of, fw_cfg_sysfs_mmio_match); #ifdef CONFIG_ACPI static const struct acpi_device_id fw_cfg_sysfs_acpi_match[] = { - { "QEMU0002", }, + { FW_CFG_ACPI_DEVICE_ID, }, {}, }; MODULE_DEVICE_TABLE(acpi, fw_cfg_sysfs_acpi_match); |