diff options
| -rw-r--r-- | hw/mips/malta.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/hw/mips/malta.c b/hw/mips/malta.c index 0e932988e0..7c3ad0974b 100644 --- a/hw/mips/malta.c +++ b/hw/mips/malta.c @@ -26,6 +26,7 @@ #include "qemu/units.h" #include "qemu/bitops.h" #include "qemu/datadir.h" +#include "qemu/guest-random.h" #include "hw/clock.h" #include "hw/southbridge/piix.h" #include "hw/isa/superio.h" @@ -1017,6 +1018,17 @@ static void G_GNUC_PRINTF(3, 4) prom_set(uint32_t *prom_buf, int index, va_end(ap); } +static void reinitialize_rng_seed(void *opaque) +{ + char *rng_seed_hex = opaque; + uint8_t rng_seed[32]; + + qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed)); + for (size_t i = 0; i < sizeof(rng_seed); ++i) { + sprintf(rng_seed_hex + i * 2, "%02x", rng_seed[i]); + } +} + /* Kernel */ static uint64_t load_kernel(void) { @@ -1028,6 +1040,9 @@ static uint64_t load_kernel(void) long prom_size; int prom_index = 0; uint64_t (*xlate_to_kseg0) (void *opaque, uint64_t addr); + uint8_t rng_seed[32]; + char rng_seed_hex[sizeof(rng_seed) * 2 + 1]; + size_t rng_seed_prom_offset; #if TARGET_BIG_ENDIAN big_endian = 1; @@ -1115,9 +1130,21 @@ static uint64_t load_kernel(void) prom_set(prom_buf, prom_index++, "modetty0"); prom_set(prom_buf, prom_index++, "38400n8r"); + + qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed)); + for (size_t i = 0; i < sizeof(rng_seed); ++i) { + sprintf(rng_seed_hex + i * 2, "%02x", rng_seed[i]); + } + prom_set(prom_buf, prom_index++, "rngseed"); + rng_seed_prom_offset = prom_index * ENVP_ENTRY_SIZE + + sizeof(uint32_t) * ENVP_NB_ENTRIES; + prom_set(prom_buf, prom_index++, "%s", rng_seed_hex); + prom_set(prom_buf, prom_index++, NULL); rom_add_blob_fixed("prom", prom_buf, prom_size, ENVP_PADDR); + qemu_register_reset_nosnapshotload(reinitialize_rng_seed, + rom_ptr(ENVP_PADDR, prom_size) + rng_seed_prom_offset); g_free(prom_buf); return kernel_entry; |