/* 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
|
