On 10/13/24 11:32 AM, Alex Shumsky wrote:
Modern Linux requires 32 byte seed to initialize random pool, but u-boot
currently provides only 8 bytes. Increase rng-seed size to make Linux happy and
initialize rng pool instantly.
Boot with 8 byte rng-seed:
# dmesg | grep crng
[ 12.089286] random: crng init done
Boot with 32 byte rng-seed:
# dmesg | grep crng
[ 0.000000] random: crng init done
https://github.com/torvalds/linux/blob/7234e2ea0edd00bfb6bb2159e55878c19885ce68/drivers/char/random.c#L632
Signed-off-by: Alex Shumsky <alexthr...@gmail.com>
Fixes: d2048ba ("rockchip: board: Add board_rng_seed() for all Rockchip
devices")
Fixes uses 12-character commit SHA.
---
arch/arm/mach-rockchip/board.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/mach-rockchip/board.c b/arch/arm/mach-rockchip/board.c
index 3fadf7e412..eee75f7bcb 100644
--- a/arch/arm/mach-rockchip/board.c
+++ b/arch/arm/mach-rockchip/board.c
@@ -472,7 +472,7 @@ __weak int misc_init_r(void)
__weak int board_rng_seed(struct abuf *buf)
{
struct udevice *dev;
- size_t len = 0x8;
+ size_t len = 32;
Let's make this override-able via environment variable, because this
might be growing in the future again. Does this work ?
size_t len = env_get_ulong("kaslrseed_size", 10, 32);
