From: "Jason A. Donenfeld" <ja...@zx2c4.com>
When the system reboots, the rng-seed that the FDT has should be
re-randomized, so that the new boot gets a new seed. Since the FDT is in
the ROM region at this point, we add a hook right after the ROM has been
added, so that we have a pointer to that copy of the FDT.
Cc: Palmer Dabbelt <pal...@dabbelt.com>
Cc: Alistair Francis <alistair.fran...@wdc.com>
Cc: Bin Meng <bin.m...@windriver.com>
Cc: qemu-ri...@nongnu.org
Signed-off-by: Jason A. Donenfeld <ja...@zx2c4.com>
Reviewed-by: Alistair Francis <alistair.fran...@wdc.com>
Message-id: 20221025004327.568476-6-ja...@zx2c4.com
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
hw/riscv/boot.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/riscv/boot.c b/hw/riscv/boot.c
index e82bf273388..ebd351c840d 100644
--- a/hw/riscv/boot.c
+++ b/hw/riscv/boot.c
@@ -30,6 +30,7 @@
#include "sysemu/device_tree.h"
#include "sysemu/qtest.h"
#include "sysemu/kvm.h"
+#include "sysemu/reset.h"
#include <libfdt.h>
@@ -241,6 +242,8 @@ uint64_t riscv_load_fdt(hwaddr dram_base, uint64_t
mem_size, void *fdt)
rom_add_blob_fixed_as("fdt", fdt, fdtsize, fdt_addr,
&address_space_memory);
+ qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds,
+ rom_ptr_for_as(&address_space_memory, fdt_addr,
fdtsize));
return fdt_addr;
}
--
2.25.1
