diff options
Diffstat (limited to 'arch/x86/kernel/setup.c')
| -rw-r--r-- | arch/x86/kernel/setup.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 53f863f28b4c..216fee7144ee 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -24,6 +24,7 @@ #include <linux/usb/xhci-dbgp.h> #include <linux/static_call.h> #include <linux/swiotlb.h> +#include <linux/random.h> #include <uapi/linux/mount.h> @@ -418,6 +419,15 @@ static void __init parse_setup_data(void) case SETUP_IMA: add_early_ima_buffer(pa_data); break; + case SETUP_RNG_SEED: + data = early_memremap(pa_data, data_len); + add_bootloader_randomness(data->data, data->len); + /* Zero seed for forward secrecy. */ + memzero_explicit(data->data, data->len); + /* Zero length in case we find ourselves back here by accident. */ + memzero_explicit(&data->len, sizeof(data->len)); + early_memunmap(data, data_len); + break; default: break; } |