From a76b911c0de3d72e245060a57d02f816fb1334e2 Mon Sep 17 00:00:00 2001 From: "Jason A. Donenfeld" Date: Tue, 25 Oct 2022 02:43:27 +0200 Subject: [PATCH] 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 Signed-off-by: Jason A. Donenfeld Message-id: 20221025004327.568476-12-Jason@zx2c4.com Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- hw/rx/rx-gdbsim.c | 3 +++ 1 file changed, 3 insertions(+) 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; }