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