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Edit File : qemu_fw_cfg.h \| Size : 2.41 KB
/* 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 Back

Edit File : qemu_fw_cfg.h | Size : 2.41 KB

/* 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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