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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2022-07-19 14:01:13 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-07-22 19:01:44 +0200 |
| commit | 6b23a6791685ac1bf071c0ebb35004e427c1806d (patch) | |
| tree | 4ccf9df3ee2bfa0ddb87230e272af9308d21d5ad /hw/nios2 | |
| parent | 7906f11e62c39cdbf8edc274cb311a420d675371 (diff) | |
| download | qemu-6b23a6791685ac1bf071c0ebb35004e427c1806d.zip qemu-6b23a6791685ac1bf071c0ebb35004e427c1806d.tar.gz qemu-6b23a6791685ac1bf071c0ebb35004e427c1806d.tar.bz2 | |
hw/nios2: virt: pass random seed to fdt
If the FDT contains /chosen/rng-seed, then the Linux RNG will use it to
initialize early. Set this using the usual guest random number
generation function. This FDT node is part of the DT specification.
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Message-Id: <20220719120113.118034-1-Jason@zx2c4.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/nios2')
| -rw-r--r-- | hw/nios2/boot.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/nios2/boot.c b/hw/nios2/boot.c index 07b8d87..21cbfff 100644 --- a/hw/nios2/boot.c +++ b/hw/nios2/boot.c @@ -34,6 +34,7 @@ #include "qemu/option.h" #include "qemu/config-file.h" #include "qemu/error-report.h" +#include "qemu/guest-random.h" #include "sysemu/device_tree.h" #include "sysemu/reset.h" #include "hw/boards.h" @@ -83,6 +84,7 @@ static int nios2_load_dtb(struct nios2_boot_info bi, const uint32_t ramsize, int fdt_size; void *fdt = NULL; int r; + uint8_t rng_seed[32]; if (dtb_filename) { fdt = load_device_tree(dtb_filename, &fdt_size); @@ -91,6 +93,9 @@ static int nios2_load_dtb(struct nios2_boot_info bi, const uint32_t ramsize, return 0; } + qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed)); + qemu_fdt_setprop(fdt, "/chosen", "rng-seed", rng_seed, sizeof(rng_seed)); + if (kernel_cmdline) { r = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", kernel_cmdline); |