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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2022-10-25 02:43:18 +0200 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2022-10-27 11:34:31 +0100 |
| commit | e1e618b9a0f9c23e9caa5933fa30ee3d33e00bfe (patch) | |
| tree | c0120a03d9d9ae3dfd1cddccf5fcca624e7b8026 /include/sysemu/device_tree.h | |
| parent | 7966d70f6f6b188475e67c2c363f19eec3d28c96 (diff) | |
| download | focaccia-qemu-e1e618b9a0f9c23e9caa5933fa30ee3d33e00bfe.tar.gz focaccia-qemu-e1e618b9a0f9c23e9caa5933fa30ee3d33e00bfe.zip | |
device-tree: add re-randomization helper function
When the system reboots, the rng-seed that the FDT has should be re-randomized, so that the new boot gets a new seed. Several architectures require this functionality, so export a function for injecting a new seed into the given FDT. Cc: Alistair Francis <alistair.francis@wdc.com> Cc: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20221025004327.568476-3-Jason@zx2c4.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include/sysemu/device_tree.h')
| -rw-r--r-- | include/sysemu/device_tree.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/sysemu/device_tree.h b/include/sysemu/device_tree.h index e7c5441f56..ca5339beae 100644 --- a/include/sysemu/device_tree.h +++ b/include/sysemu/device_tree.h @@ -197,6 +197,15 @@ int qemu_fdt_setprop_sized_cells_from_array(void *fdt, qdt_tmp); \ }) + +/** + * qemu_fdt_randomize_seeds: + * @fdt: device tree blob + * + * Re-randomize all "rng-seed" properties with new seeds. + */ +void qemu_fdt_randomize_seeds(void *fdt); + #define FDT_PCI_RANGE_RELOCATABLE 0x80000000 #define FDT_PCI_RANGE_PREFETCHABLE 0x40000000 #define FDT_PCI_RANGE_ALIASED 0x20000000 |