int read_hypervisor_dmi(void)
{
int rc = HYPER_NONE;
uint8_t *buf = NULL;
size_t fp = 0;
if (sizeof(uint8_t) != 1
|| sizeof(uint16_t) != 2
|| sizeof(uint32_t) != 4
|| '\0' != 0)
return rc;
rc = hypervisor_decode_sysfw();
if (rc >= 0)
return rc;
/* First try EFI (ia64, Intel-based Mac) */
switch (address_from_efi(&fp)) {
case EFI_NOT_FOUND:
goto memory_scan;
case EFI_NO_SMBIOS:
goto done;
}
buf = get_mem_chunk(fp, 0x20, _PATH_DEV_MEM);
if (!buf)
goto done;
rc = hypervisor_decode_smbios(buf, _PATH_DEV_MEM);
if (rc)
goto done;
free(buf);
buf = NULL;
memory_scan:
#if defined(__x86_64__) || defined(__i386__)
/* Fallback to memory scan (x86, x86_64) */
buf = get_mem_chunk(0xF0000, 0x10000, _PATH_DEV_MEM);
if (!buf)
goto done;
for (fp = 0; fp <= 0xFFF0; fp += 16) {
if (memcmp(buf + fp, "_SM_", 4) == 0 && fp <= 0xFFE0) {
rc = hypervisor_decode_smbios(buf + fp, _PATH_DEV_MEM);
if (rc == -1)
fp += 16;
} else if (memcmp(buf + fp, "_DMI_", 5) == 0)
rc = hypervisor_decode_legacy(buf + fp, _PATH_DEV_MEM);
if (rc >= 0)
break;
}
#endif
done:
free(buf);
return rc;
}
int read_hypervisor_dmi(void)
{
int ret = HYPER_NONE;
uint8_t *buf = NULL;
size_t fp = 0;
if (sizeof(uint8_t) != 1
|| sizeof(uint16_t) != 2
|| sizeof(uint32_t) != 4
|| '\0' != 0)
return ret;
/* First try EFI (ia64, Intel-based Mac) */
switch (address_from_efi(&fp)) {
case EFI_NOT_FOUND:
goto memory_scan;
case EFI_NO_SMBIOS:
goto exit_free;
}
buf = get_mem_chunk(fp, 0x20, _PATH_DEV_MEM);
if (!buf)
goto exit_free;
if (hypervisor_decode_smbios(buf, _PATH_DEV_MEM))
goto done;
memory_scan:
/* Fallback to memory scan (x86, x86_64) */
buf = get_mem_chunk(0xF0000, 0x10000, _PATH_DEV_MEM);
if (!buf)
goto exit_free;
for (fp = 0; fp <= 0xFFF0; fp += 16) {
if (memcmp(buf + fp, "_SM_", 4) == 0 && fp <= 0xFFE0) {
if ((ret = hypervisor_decode_smbios(buf + fp,
_PATH_DEV_MEM)) == -1)
fp += 16;
} else if (memcmp(buf + fp, "_DMI_", 5) == 0)
ret = hypervisor_decode_legacy(buf + fp, _PATH_DEV_MEM);
}
done:
free(buf);
exit_free:
return ret;
}