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)
16 unsigned int eax, ebx, ecx, edx;
19 cpuid(KVM_CPUID_SIGNATURE, &eax, &ebx, &ecx, &edx);
20 memcpy(signature + 0, &ebx, 4);
21 memcpy(signature + 4, &ecx, 4);
22 memcpy(signature + 8, &edx, 4);
25 if (strcmp(signature, "KVMKVMKVM") == 0)
31 #define QEMU_CFG_SIGNATURE 0x00
32 #define QEMU_CFG_ID 0x01
33 #define QEMU_CFG_UUID 0x02
34 #define QEMU_CFG_NUMA 0x0d
35 #define QEMU_CFG_BOOT_MENU 0x0e
36 #define QEMU_CFG_MAX_CPUS 0x0f
37 #define QEMU_CFG_FILE_DIR 0x19
38 #define QEMU_CFG_ARCH_LOCAL 0x8000
39 #define QEMU_CFG_ACPI_TABLES (QEMU_CFG_ARCH_LOCAL + 0)
40 #define QEMU_CFG_SMBIOS_ENTRIES (QEMU_CFG_ARCH_LOCAL + 1)
41 #define QEMU_CFG_IRQ0_OVERRIDE (QEMU_CFG_ARCH_LOCAL + 2)
42 #define QEMU_CFG_E820_TABLE (QEMU_CFG_ARCH_LOCAL + 3)
44 extern int qemu_cfg_present;
46 void qemu_cfg_port_probe(void);
47 int qemu_cfg_show_boot_menu(void);
48 void qemu_cfg_get_uuid(u8 *uuid);
49 int qemu_cfg_irq0_override(void);
50 u16 qemu_cfg_acpi_additional_tables(void);
51 u16 qemu_cfg_next_acpi_table_len(void);
52 void *qemu_cfg_next_acpi_table_load(void *addr, u16 len);
53 u16 qemu_cfg_smbios_entries(void);
54 size_t qemu_cfg_smbios_load_field(int type, size_t offset, void *addr);
55 int qemu_cfg_smbios_load_external(int type, char **p, unsigned *nr_structs,
56 unsigned *max_struct_size, char *end);
57 int qemu_cfg_get_numa_nodes(void);
58 void qemu_cfg_get_numa_data(u64 *data, int n);
59 u16 qemu_cfg_get_max_cpus(void);
61 typedef struct QemuCfgFile {
62 u32 size; /* file size */
63 u16 select; /* write this to 0x510 to read it */
68 struct e820_reservation {
74 u32 qemu_cfg_next_prefix_file(const char *prefix, u32 prevselect);
75 u32 qemu_cfg_find_file(const char *name);
76 int qemu_cfg_size_file(u32 select);
77 const char* qemu_cfg_name_file(u32 select);
78 int qemu_cfg_read_file(u32 select, void *dst, u32 maxlen);
80 // Wrappers that select cbfs or qemu_cfg file interface.
81 static inline u32 romfile_findprefix(const char *prefix, u32 previd) {
83 return (u32)cbfs_findprefix(prefix, (void*)previd);
84 return qemu_cfg_next_prefix_file(prefix, previd);
86 static inline u32 romfile_find(const char *name) {
88 return (u32)cbfs_finddatafile(name);
89 return qemu_cfg_find_file(name);
91 static inline u32 romfile_size(u32 fileid) {
93 return cbfs_datasize((void*)fileid);
94 return qemu_cfg_size_file(fileid);
96 static inline int romfile_copy(u32 fileid, void *dst, u32 maxlen) {
98 return cbfs_copyfile((void*)fileid, dst, maxlen);
99 return qemu_cfg_read_file(fileid, dst, maxlen);
101 static inline const char* romfile_name(u32 fileid) {
103 return cbfs_filename((void*)fileid);
104 return qemu_cfg_name_file(fileid);
106 void *romfile_loadfile(const char *name, int *psize);
107 u64 romfile_loadint(const char *name, u64 defval);
109 u32 qemu_cfg_e820_entries(void);
110 void* qemu_cfg_e820_load_next(void *addr);