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authorJason A. Donenfeld <Jason@zx2c4.com>2022-10-25 02:43:27 +0200
committerPeter Maydell <peter.maydell@linaro.org>2022-10-27 11:34:31 +0100
commita76b911c0de3d72e245060a57d02f816fb1334e2 (patch)
tree04cac7fdf0e9baa582b0c8b3c8c75da41e09162a
parent2db07d0506d365884b140fd5640fd71db15eacbc (diff)
rx: re-randomize rng-seed on reboot
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: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Message-id: 20221025004327.568476-12-Jason@zx2c4.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--hw/rx/rx-gdbsim.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/rx/rx-gdbsim.c b/hw/rx/rx-gdbsim.c
index 8ffe1b8035..47c17026c7 100644
--- a/hw/rx/rx-gdbsim.c
+++ b/hw/rx/rx-gdbsim.c
@@ -25,6 +25,7 @@
#include "hw/rx/rx62n.h"
#include "sysemu/qtest.h"
#include "sysemu/device_tree.h"
+#include "sysemu/reset.h"
#include "hw/boards.h"
#include "qom/object.h"
@@ -148,6 +149,8 @@ static void rx_gdbsim_init(MachineState *machine)
dtb_offset = ROUND_DOWN(machine->ram_size - dtb_size, 16);
rom_add_blob_fixed("dtb", dtb, dtb_size,
SDRAM_BASE + dtb_offset);
+ qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds,
+ rom_ptr(SDRAM_BASE + dtb_offset, dtb_size));
/* Set dtb address to R1 */
RX_CPU(first_cpu)->env.regs[1] = SDRAM_BASE + dtb_offset;
}