/* SPDX-License-Identifier: BSD-3-Clause */ #ifndef _LINUX_FW_CFG_H #define _LINUX_FW_CFG_H #include <linux/types.h> #define FW_CFG_ACPI_DEVICE_ID "QEMU0002" /* selector key values for "well-known" fw_cfg entries */ #define FW_CFG_SIGNATURE 0x00 #define FW_CFG_ID 0x01 #define FW_CFG_UUID 0x02 #define FW_CFG_RAM_SIZE 0x03 #define FW_CFG_NOGRAPHIC 0x04 #define FW_CFG_NB_CPUS 0x05 #define FW_CFG_MACHINE_ID 0x06 #define FW_CFG_KERNEL_ADDR 0x07 #define FW_CFG_KERNEL_SIZE 0x08 #define FW_CFG_KERNEL_CMDLINE 0x09 #define FW_CFG_INITRD_ADDR 0x0a #define FW_CFG_INITRD_SIZE 0x0b #define FW_CFG_BOOT_DEVICE 0x0c #define FW_CFG_NUMA 0x0d #define FW_CFG_BOOT_MENU 0x0e #define FW_CFG_MAX_CPUS 0x0f #define FW_CFG_KERNEL_ENTRY 0x10 #define FW_CFG_KERNEL_DATA 0x11 #define FW_CFG_INITRD_DATA 0x12 #define FW_CFG_CMDLINE_ADDR 0x13 #define FW_CFG_CMDLINE_SIZE 0x14 #define FW_CFG_CMDLINE_DATA 0x15 #define FW_CFG_SETUP_ADDR 0x16 #define FW_CFG_SETUP_SIZE 0x17 #define FW_CFG_SETUP_DATA 0x18 #define FW_CFG_FILE_DIR 0x19 #define FW_CFG_FILE_FIRST 0x20 #define FW_CFG_FILE_SLOTS_MIN 0x10 #define FW_CFG_WRITE_CHANNEL 0x4000 #define FW_CFG_ARCH_LOCAL 0x8000 #define FW_CFG_ENTRY_MASK (~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)) #define FW_CFG_INVALID 0xffff /* width in bytes of fw_cfg control register */ #define FW_CFG_CTL_SIZE 0x02 /* fw_cfg "file name" is up to 56 characters (including terminating nul) */ #define FW_CFG_MAX_FILE_PATH 56 /* size in bytes of fw_cfg signature */ #define FW_CFG_SIG_SIZE 4 /* FW_CFG_ID bits */ #define FW_CFG_VERSION 0x01 #define FW_CFG_VERSION_DMA 0x02 /* fw_cfg file directory entry type */ struct fw_cfg_file { __be32 size; __be16 select; __u16 reserved; char name[FW_CFG_MAX_FILE_PATH]; }; /* FW_CFG_DMA_CONTROL bits */ #define FW_CFG_DMA_CTL_ERROR 0x01 #define FW_CFG_DMA_CTL_READ 0x02 #define FW_CFG_DMA_CTL_SKIP 0x04 #define FW_CFG_DMA_CTL_SELECT 0x08 #define FW_CFG_DMA_CTL_WRITE 0x10 #define FW_CFG_DMA_SIGNATURE 0x51454d5520434647ULL /* "QEMU CFG" */ /* Control as first field allows for different structures selected by this * field, which might be useful in the future */ struct fw_cfg_dma_access { __be32 control; __be32 length; __be64 address; }; #define FW_CFG_VMCOREINFO_FILENAME "etc/vmcoreinfo" #define FW_CFG_VMCOREINFO_FORMAT_NONE 0x0 #define FW_CFG_VMCOREINFO_FORMAT_ELF 0x1 struct fw_cfg_vmcoreinfo { __le16 host_format; __le16 guest_format; __le32 size; __le64 paddr; }; #endif

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