SEV requires that guest bios must be encrypted before booting the guest.
Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Eduardo Habkost <ehabkost@xxxxxxxxxx>
Signed-off-by: Brijesh Singh <brijesh.singh@xxxxxxx>
---
hw/i386/pc_sysfw.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
index 4325575e7d82..73ac783f2055 100644
--- a/hw/i386/pc_sysfw.c
+++ b/hw/i386/pc_sysfw.c
@@ -113,6 +113,8 @@ static void pc_system_flash_init(MemoryRegion *rom_memory)
pflash_t *system_flash;
MemoryRegion *flash_mem;
char name[64];
+ void *flash_ptr;
+ int ret, flash_size;
sector_bits = 12;
sector_size = 1 << sector_bits;
@@ -169,6 +171,17 @@ static void pc_system_flash_init(MemoryRegion *rom_memory)
if (unit == 0) {
flash_mem = pflash_cfi01_get_memory(system_flash);
pc_isa_bios_init(rom_memory, flash_mem, size);
+
+ /* Encrypt the pflash boot ROM */
+ if (kvm_memcrypt_enabled()) {
+ flash_ptr = memory_region_get_ram_ptr(flash_mem);
+ flash_size = memory_region_size(flash_mem);
+ ret = kvm_memcrypt_encrypt_data(flash_ptr, flash_size);
+ if (ret) {
+ error_report("failed to encrypt pflash rom");
+ exit(1);
+ }
+ }
}
}
}
--
2.14.3
