6 /* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx. It
7 * should be used to determine that a VM is running under KVM.
9 #define KVM_CPUID_SIGNATURE 0x40000000
11 static inline int kvm_para_available(void)
13 unsigned int eax, ebx, ecx, edx;
16 cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx);
17 memcpy(signature + 0, &ebx, 4);
18 memcpy(signature + 4, &ecx, 4);
19 memcpy(signature + 8, &edx, 4);
22 if (strcmp(signature, "KVMKVMKVM") == 0)
28 #define QEMU_CFG_SIGNATURE 0x00
29 #define QEMU_CFG_ID 0x01
30 #define QEMU_CFG_UUID 0x02
31 #define QEMU_CFG_NUMA 0x0d
32 #define QEMU_CFG_BOOT_MENU 0x0e
33 #define QEMU_CFG_MAX_CPUS 0x0f
34 #define QEMU_CFG_FILE_DIR 0x19
35 #define QEMU_CFG_ARCH_LOCAL 0x8000
36 #define QEMU_CFG_ACPI_TABLES (QEMU_CFG_ARCH_LOCAL + 0)
37 #define QEMU_CFG_SMBIOS_ENTRIES (QEMU_CFG_ARCH_LOCAL + 1)
38 #define QEMU_CFG_IRQ0_OVERRIDE (QEMU_CFG_ARCH_LOCAL + 2)
39 #define QEMU_CFG_E820_TABLE (QEMU_CFG_ARCH_LOCAL + 3)
41 extern int qemu_cfg_present;
43 void qemu_cfg_port_probe(void);
44 int qemu_cfg_show_boot_menu(void);
45 void qemu_cfg_get_uuid(u8 *uuid);
46 int qemu_cfg_irq0_override(void);
47 u16 qemu_cfg_acpi_additional_tables(void);
48 u16 qemu_cfg_next_acpi_table_len(void);
49 void *qemu_cfg_next_acpi_table_load(void *addr, u16 len);
50 u16 qemu_cfg_smbios_entries(void);
51 size_t qemu_cfg_smbios_load_field(int type, size_t offset, void *addr);
52 int qemu_cfg_smbios_load_external(int type, char **p, unsigned *nr_structs,
53 unsigned *max_struct_size, char *end);
54 int qemu_cfg_get_numa_nodes(void);
55 void qemu_cfg_get_numa_data(u64 *data, int n);
56 u16 qemu_cfg_get_max_cpus(void);
58 typedef struct QemuCfgFile {
59 u32 size; /* file size */
60 u16 select; /* write this to 0x510 to read it */
65 struct e820_reservation {
71 u32 qemu_cfg_next_prefix_file(const char *prefix, u32 prevselect);
72 u32 qemu_cfg_find_file(const char *name);
73 int qemu_cfg_size_file(u32 select);
74 int qemu_cfg_read_file(u32 select, void *dst, u32 maxlen);
76 // Wrappers that select cbfs or qemu_cfg file interface.
77 static inline u32 romfile_findprefix(const char *prefix, u32 previd) {
79 return (u32)cbfs_findprefix(prefix, (void*)previd);
80 return qemu_cfg_next_prefix_file(prefix, previd);
82 static inline u32 romfile_find(const char *name) {
84 return (u32)cbfs_finddatafile(name);
85 return qemu_cfg_find_file(name);
87 static inline u32 romfile_size(u32 fileid) {
89 return cbfs_datasize((void*)fileid);
90 return qemu_cfg_size_file(fileid);
92 static inline int romfile_copy(u32 fileid, void *dst, u32 maxlen) {
94 return cbfs_copyfile((void*)fileid, dst, maxlen);
95 return qemu_cfg_read_file(fileid, dst, maxlen);
98 u32 qemu_cfg_e820_entries(void);
99 void* qemu_cfg_e820_load_next(void *addr);