4 #include "config.h" // CONFIG_COREBOOT
7 /* This CPUID returns the signature 'KVMKVMKVM' in ebx, ecx, and edx. It
8 * should be used to determine that a VM is running under KVM.
10 #define KVM_CPUID_SIGNATURE 0x40000000
12 static inline int kvm_para_available(void)
14 unsigned int eax, ebx, ecx, edx;
17 cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx);
18 memcpy(signature + 0, &ebx, 4);
19 memcpy(signature + 4, &ecx, 4);
20 memcpy(signature + 8, &edx, 4);
23 if (strcmp(signature, "KVMKVMKVM") == 0)
29 #define QEMU_CFG_SIGNATURE 0x00
30 #define QEMU_CFG_ID 0x01
31 #define QEMU_CFG_UUID 0x02
32 #define QEMU_CFG_NUMA 0x0d
33 #define QEMU_CFG_BOOT_MENU 0x0e
34 #define QEMU_CFG_MAX_CPUS 0x0f
35 #define QEMU_CFG_FILE_DIR 0x19
36 #define QEMU_CFG_ARCH_LOCAL 0x8000
37 #define QEMU_CFG_ACPI_TABLES (QEMU_CFG_ARCH_LOCAL + 0)
38 #define QEMU_CFG_SMBIOS_ENTRIES (QEMU_CFG_ARCH_LOCAL + 1)
39 #define QEMU_CFG_IRQ0_OVERRIDE (QEMU_CFG_ARCH_LOCAL + 2)
40 #define QEMU_CFG_E820_TABLE (QEMU_CFG_ARCH_LOCAL + 3)
42 extern int qemu_cfg_present;
44 void qemu_cfg_port_probe(void);
45 int qemu_cfg_show_boot_menu(void);
46 void qemu_cfg_get_uuid(u8 *uuid);
47 int qemu_cfg_irq0_override(void);
48 u16 qemu_cfg_acpi_additional_tables(void);
49 u16 qemu_cfg_next_acpi_table_len(void);
50 void *qemu_cfg_next_acpi_table_load(void *addr, u16 len);
51 u16 qemu_cfg_smbios_entries(void);
52 size_t qemu_cfg_smbios_load_field(int type, size_t offset, void *addr);
53 int qemu_cfg_smbios_load_external(int type, char **p, unsigned *nr_structs,
54 unsigned *max_struct_size, char *end);
55 int qemu_cfg_get_numa_nodes(void);
56 void qemu_cfg_get_numa_data(u64 *data, int n);
57 u16 qemu_cfg_get_max_cpus(void);
59 typedef struct QemuCfgFile {
60 u32 size; /* file size */
61 u16 select; /* write this to 0x510 to read it */
66 struct e820_reservation {
72 u32 qemu_cfg_next_prefix_file(const char *prefix, u32 prevselect);
73 u32 qemu_cfg_find_file(const char *name);
74 int qemu_cfg_size_file(u32 select);
75 const char* qemu_cfg_name_file(u32 select);
76 int qemu_cfg_read_file(u32 select, void *dst, u32 maxlen);
78 // Wrappers that select cbfs or qemu_cfg file interface.
79 static inline u32 romfile_findprefix(const char *prefix, u32 previd) {
81 return (u32)cbfs_findprefix(prefix, (void*)previd);
82 return qemu_cfg_next_prefix_file(prefix, previd);
84 static inline u32 romfile_find(const char *name) {
86 return (u32)cbfs_finddatafile(name);
87 return qemu_cfg_find_file(name);
89 static inline u32 romfile_size(u32 fileid) {
91 return cbfs_datasize((void*)fileid);
92 return qemu_cfg_size_file(fileid);
94 static inline int romfile_copy(u32 fileid, void *dst, u32 maxlen) {
96 return cbfs_copyfile((void*)fileid, dst, maxlen);
97 return qemu_cfg_read_file(fileid, dst, maxlen);
99 static inline const char* romfile_name(u32 fileid) {
101 return cbfs_filename((void*)fileid);
102 return qemu_cfg_name_file(fileid);
104 void *romfile_loadfile(const char *name, int *psize);
105 u64 romfile_loadint(const char *name, u64 defval);
107 u32 qemu_cfg_e820_entries(void);
108 void* qemu_cfg_e820_load_next(void *addr);