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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2022-09-08 11:40:30 +0200 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@amd.com> | 2022-09-21 19:59:56 +0200 |
| commit | b91b6b5a2cd83a096116929dfc8e016091080adc (patch) | |
| tree | f4d58b8ee841ad4a595c98d22f35d2c1795d770f /hw | |
| parent | 2906f933dd1de6d94c54881cc16ea7390a6ba300 (diff) | |
| download | qemu-b91b6b5a2cd83a096116929dfc8e016091080adc.zip qemu-b91b6b5a2cd83a096116929dfc8e016091080adc.tar.gz qemu-b91b6b5a2cd83a096116929dfc8e016091080adc.tar.bz2 | |
hw/microblaze: 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.
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/microblaze/boot.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/microblaze/boot.c b/hw/microblaze/boot.c index 8b92a98..25ad547 100644 --- a/hw/microblaze/boot.c +++ b/hw/microblaze/boot.c @@ -30,6 +30,7 @@ #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" @@ -75,6 +76,7 @@ static int microblaze_load_dtb(hwaddr addr, int fdt_size; void *fdt = NULL; int r; + uint8_t rng_seed[32]; if (dtb_filename) { fdt = load_device_tree(dtb_filename, &fdt_size); @@ -83,6 +85,9 @@ static int microblaze_load_dtb(hwaddr addr, 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); |