diff options
| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2016-11-12 21:32:33 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-11-13 08:23:15 +0100 |
| commit | 568bc4e87033d232c5fd00d5b0cd22a2ccc04944 (patch) | |
| tree | f2bb9e8fa9445523c9c33a1afc5a9601fcf1f4ec /drivers/firmware/efi/libstub/arm-stub.c | |
| parent | a6a144698db93a2c456d1e3811140cadef1ba0e3 (diff) | |
| download | linux-568bc4e87033d232c5fd00d5b0cd22a2ccc04944.tar.bz2 | |
efi/arm*/libstub: Invoke EFI_RNG_PROTOCOL to seed the UEFI RNG table
Invoke the EFI_RNG_PROTOCOL protocol in the context of the stub and
install the Linux-specific RNG seed UEFI config table. This will be
picked up by the EFI routines in the core kernel to seed the kernel
entropy pool.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20161112213237.8804-6-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/libstub/arm-stub.c')
| -rw-r--r-- | drivers/firmware/efi/libstub/arm-stub.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c index 993aa56755f6..b4f7d78f9e8b 100644 --- a/drivers/firmware/efi/libstub/arm-stub.c +++ b/drivers/firmware/efi/libstub/arm-stub.c @@ -340,6 +340,8 @@ unsigned long efi_entry(void *handle, efi_system_table_t *sys_table, if (status != EFI_SUCCESS) pr_efi_err(sys_table, "Failed initrd from command line!\n"); + efi_random_get_seed(sys_table); + new_fdt_addr = fdt_addr; status = allocate_new_fdt_and_exit_boot(sys_table, handle, &new_fdt_addr, dram_base + MAX_FDT_OFFSET, |