Commit 109b6236 authored by Anton Blanchard's avatar Anton Blanchard Committed by Grant Likely

of: Feed entire flattened device tree into the random pool

We feed the entire DMI table into the random pool to provide
better random data during early boot, so do the same with the
flattened device tree.
Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarGrant Likely <grant.likely@linaro.org>
parent 44856819
...@@ -18,6 +18,7 @@ ...@@ -18,6 +18,7 @@
#include <linux/string.h> #include <linux/string.h>
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/random.h>
#include <asm/setup.h> /* for COMMAND_LINE_SIZE */ #include <asm/setup.h> /* for COMMAND_LINE_SIZE */
#ifdef CONFIG_PPC #ifdef CONFIG_PPC
...@@ -726,3 +727,14 @@ void __init unflatten_device_tree(void) ...@@ -726,3 +727,14 @@ void __init unflatten_device_tree(void)
} }
#endif /* CONFIG_OF_EARLY_FLATTREE */ #endif /* CONFIG_OF_EARLY_FLATTREE */
/* Feed entire flattened device tree into the random pool */
static int __init add_fdt_randomness(void)
{
if (initial_boot_params)
add_device_randomness(initial_boot_params,
be32_to_cpu(initial_boot_params->totalsize));
return 0;
}
core_initcall(add_fdt_randomness);
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