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[PATCH 6/6] mips: re-randomize rng-seed on reboot
From: |
Jason A. Donenfeld |
Subject: |
[PATCH 6/6] mips: re-randomize rng-seed on reboot |
Date: |
Fri, 30 Sep 2022 01:23:39 +0200 |
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: Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>
Cc: Paul Burton <paulburton@kernel.org>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
hw/mips/boston.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/mips/boston.c b/hw/mips/boston.c
index d2ab9da1a0..a560ce0324 100644
--- a/hw/mips/boston.c
+++ b/hw/mips/boston.c
@@ -41,6 +41,7 @@
#include "sysemu/sysemu.h"
#include "sysemu/qtest.h"
#include "sysemu/runstate.h"
+#include "sysemu/reset.h"
#include <libfdt.h>
#include "qom/object.h"
@@ -810,6 +811,8 @@ static void boston_mach_init(MachineState *machine)
/* Calculate real fdt size after filter */
dt_size = fdt_totalsize(dtb_load_data);
rom_add_blob_fixed("dtb", dtb_load_data, dt_size, dtb_paddr);
+ qemu_register_reset(qemu_fdt_randomize_seeds,
+ rom_ptr(dtb_paddr, dt_size));
} else {
/* Try to load file as FIT */
fit_err = load_fit(&boston_fit_loader, machine->kernel_filename,
s);
--
2.37.3
- [PATCH 1/6] device-tree: add re-randomization helper function, Jason A. Donenfeld, 2022/09/29
- [PATCH 2/6] arm: re-randomize rng-seed on reboot, Jason A. Donenfeld, 2022/09/29
- [PATCH 3/6] riscv: re-randomize rng-seed on reboot, Jason A. Donenfeld, 2022/09/29
- [PATCH 4/6] openrisc: re-randomize rng-seed on reboot, Jason A. Donenfeld, 2022/09/29
- [PATCH 5/6] rx: re-randomize rng-seed on reboot, Jason A. Donenfeld, 2022/09/29
- [PATCH 6/6] mips: re-randomize rng-seed on reboot,
Jason A. Donenfeld <=
- Re: [PATCH 1/6] device-tree: add re-randomization helper function, Bin Meng, 2022/09/30