xref: /openbmc/qemu/include/hw/loongarch/boot.h (revision 72674db0)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Definitions for LoongArch boot.
4  *
5  * Copyright (C) 2023 Loongson Technology Corporation Limited
6  */
7 
8 #ifndef HW_LOONGARCH_BOOT_H
9 #define HW_LOONGARCH_BOOT_H
10 
11 /* UEFI 2.10 */
12 #define EFI_SYSTEM_TABLE_SIGNATURE       0x5453595320494249
13 #define EFI_2_100_SYSTEM_TABLE_REVISION  ((2<<16) | (100))
14 #define EFI_SPECIFICATION_VERSION        EFI_SYSTEM_TABLE_REVISION
15 #define EFI_SYSTEM_TABLE_REVISION        EFI_2_100_SYSTEM_TABLE_REVISION
16 
17 #define FW_VERSION 0x1
18 #define FW_PATCHLEVEL 0x0
19 
20 typedef struct {
21     uint8_t b[16];
22 } efi_guid_t QEMU_ALIGNED(8);
23 
24 #define EFI_GUID(a, b, c, d...) (efi_guid_t){ {                                \
25         (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
26         (b) & 0xff, ((b) >> 8) & 0xff,                                         \
27         (c) & 0xff, ((c) >> 8) & 0xff, d } }
28 
29 #define LINUX_EFI_BOOT_MEMMAP_GUID \
30         EFI_GUID(0x800f683f, 0xd08b, 0x423a,  0xa2, 0x93, \
31                  0x96, 0x5c, 0x3c, 0x6f, 0xe2, 0xb4)
32 
33 #define LINUX_EFI_INITRD_MEDIA_GUID \
34         EFI_GUID(0x5568e427, 0x68fc, 0x4f3d,  0xac, 0x74, \
35                  0xca, 0x55, 0x52, 0x31, 0xcc, 0x68)
36 
37 #define DEVICE_TREE_GUID \
38         EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5,  0x83, 0x0b, \
39                  0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
40 
41 struct efi_config_table {
42     efi_guid_t guid;
43     uint64_t *ptr;
44     const char name[16];
45 };
46 
47 typedef struct {
48     uint64_t signature;
49     uint32_t revision;
50     uint32_t headersize;
51     uint32_t crc32;
52     uint32_t reserved;
53 } efi_table_hdr_t;
54 
55 struct efi_configuration_table {
56     efi_guid_t guid;
57     void *table;
58 };
59 
60 struct efi_system_table {
61     efi_table_hdr_t hdr;
62     uint64_t fw_vendor;        /* physical addr of CHAR16 vendor string */
63     uint32_t fw_revision;
64     uint64_t con_in_handle;
65     uint64_t *con_in;
66     uint64_t con_out_handle;
67     uint64_t *con_out;
68     uint64_t stderr_handle;
69     uint64_t stderr_placeholder;
70     uint64_t *runtime;
71     uint64_t *boottime;
72     uint64_t nr_tables;
73     struct efi_configuration_table *tables;
74 };
75 
76 typedef struct {
77     uint32_t type;
78     uint32_t pad;
79     uint64_t phys_addr;
80     uint64_t virt_addr;
81     uint64_t num_pages;
82     uint64_t attribute;
83 } efi_memory_desc_t;
84 
85 struct efi_boot_memmap {
86     uint64_t map_size;
87     uint64_t desc_size;
88     uint32_t desc_ver;
89     uint64_t map_key;
90     uint64_t buff_size;
91     efi_memory_desc_t map[32];
92 };
93 
94 struct efi_initrd {
95     uint64_t base;
96     uint64_t size;
97 };
98 
99 struct loongarch_boot_info {
100     uint64_t ram_size;
101     const char *kernel_filename;
102     const char *kernel_cmdline;
103     const char *initrd_filename;
104     uint64_t a0, a1, a2;
105 };
106 
107 extern struct memmap_entry *memmap_table;
108 extern unsigned memmap_entries;
109 
110 struct memmap_entry {
111     uint64_t address;
112     uint64_t length;
113     uint32_t type;
114     uint32_t reserved;
115 };
116 
117 void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info);
118 
119 #endif /* HW_LOONGARCH_BOOT_H */
120