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1f57bc12 MAL |
1 | /* SPDX-License-Identifier: BSD-3-Clause */ |
2 | #ifndef _LINUX_FW_CFG_H | |
3 | #define _LINUX_FW_CFG_H | |
4 | ||
5 | #include <linux/types.h> | |
6 | ||
7 | #define FW_CFG_ACPI_DEVICE_ID "QEMU0002" | |
8 | ||
9 | /* selector key values for "well-known" fw_cfg entries */ | |
10 | #define FW_CFG_SIGNATURE 0x00 | |
11 | #define FW_CFG_ID 0x01 | |
12 | #define FW_CFG_UUID 0x02 | |
13 | #define FW_CFG_RAM_SIZE 0x03 | |
14 | #define FW_CFG_NOGRAPHIC 0x04 | |
15 | #define FW_CFG_NB_CPUS 0x05 | |
16 | #define FW_CFG_MACHINE_ID 0x06 | |
17 | #define FW_CFG_KERNEL_ADDR 0x07 | |
18 | #define FW_CFG_KERNEL_SIZE 0x08 | |
19 | #define FW_CFG_KERNEL_CMDLINE 0x09 | |
20 | #define FW_CFG_INITRD_ADDR 0x0a | |
21 | #define FW_CFG_INITRD_SIZE 0x0b | |
22 | #define FW_CFG_BOOT_DEVICE 0x0c | |
23 | #define FW_CFG_NUMA 0x0d | |
24 | #define FW_CFG_BOOT_MENU 0x0e | |
25 | #define FW_CFG_MAX_CPUS 0x0f | |
26 | #define FW_CFG_KERNEL_ENTRY 0x10 | |
27 | #define FW_CFG_KERNEL_DATA 0x11 | |
28 | #define FW_CFG_INITRD_DATA 0x12 | |
29 | #define FW_CFG_CMDLINE_ADDR 0x13 | |
30 | #define FW_CFG_CMDLINE_SIZE 0x14 | |
31 | #define FW_CFG_CMDLINE_DATA 0x15 | |
32 | #define FW_CFG_SETUP_ADDR 0x16 | |
33 | #define FW_CFG_SETUP_SIZE 0x17 | |
34 | #define FW_CFG_SETUP_DATA 0x18 | |
35 | #define FW_CFG_FILE_DIR 0x19 | |
36 | ||
37 | #define FW_CFG_FILE_FIRST 0x20 | |
38 | #define FW_CFG_FILE_SLOTS_MIN 0x10 | |
39 | ||
40 | #define FW_CFG_WRITE_CHANNEL 0x4000 | |
41 | #define FW_CFG_ARCH_LOCAL 0x8000 | |
42 | #define FW_CFG_ENTRY_MASK (~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)) | |
43 | ||
44 | #define FW_CFG_INVALID 0xffff | |
45 | ||
46 | /* width in bytes of fw_cfg control register */ | |
47 | #define FW_CFG_CTL_SIZE 0x02 | |
48 | ||
49 | /* fw_cfg "file name" is up to 56 characters (including terminating nul) */ | |
50 | #define FW_CFG_MAX_FILE_PATH 56 | |
51 | ||
52 | /* size in bytes of fw_cfg signature */ | |
53 | #define FW_CFG_SIG_SIZE 4 | |
54 | ||
55 | /* FW_CFG_ID bits */ | |
56 | #define FW_CFG_VERSION 0x01 | |
2d6d60a3 | 57 | #define FW_CFG_VERSION_DMA 0x02 |
1f57bc12 MAL |
58 | |
59 | /* fw_cfg file directory entry type */ | |
60 | struct fw_cfg_file { | |
61 | __be32 size; | |
62 | __be16 select; | |
63 | __u16 reserved; | |
64 | char name[FW_CFG_MAX_FILE_PATH]; | |
65 | }; | |
66 | ||
2d6d60a3 MAL |
67 | /* FW_CFG_DMA_CONTROL bits */ |
68 | #define FW_CFG_DMA_CTL_ERROR 0x01 | |
69 | #define FW_CFG_DMA_CTL_READ 0x02 | |
70 | #define FW_CFG_DMA_CTL_SKIP 0x04 | |
71 | #define FW_CFG_DMA_CTL_SELECT 0x08 | |
72 | #define FW_CFG_DMA_CTL_WRITE 0x10 | |
73 | ||
74 | #define FW_CFG_DMA_SIGNATURE 0x51454d5520434647ULL /* "QEMU CFG" */ | |
75 | ||
76 | /* Control as first field allows for different structures selected by this | |
77 | * field, which might be useful in the future | |
78 | */ | |
79 | struct fw_cfg_dma_access { | |
80 | __be32 control; | |
81 | __be32 length; | |
82 | __be64 address; | |
83 | }; | |
84 | ||
85 | #define FW_CFG_VMCOREINFO_FILENAME "etc/vmcoreinfo" | |
86 | ||
87 | #define FW_CFG_VMCOREINFO_FORMAT_NONE 0x0 | |
88 | #define FW_CFG_VMCOREINFO_FORMAT_ELF 0x1 | |
89 | ||
90 | struct fw_cfg_vmcoreinfo { | |
91 | __le16 host_format; | |
92 | __le16 guest_format; | |
93 | __le32 size; | |
94 | __le64 paddr; | |
95 | }; | |
96 | ||
1f57bc12 | 97 | #endif |