Hsin-Yi Wang cfbb70381f BACKPORT: fdt: add support for rng-seed ... Introducing a chosen node, rng-seed, which is an entropy that can be passed to kernel called very early to increase initial device randomness. Bootloader should provide this entropy and the value is read from /chosen/rng-seed in DT. Obtain of_fdt_crc32 for CRC check after early_init_dt_scan_nodes(), since early_init_dt_scan_chosen() would modify fdt to erase rng-seed. Add a new interface add_bootloader_randomness() for rng-seed use case. Depends on whether the seed is trustworthy, rng seed would be passed to add_hwgenerator_randomness(). Otherwise it would be passed to add_device_randomness(). Decision is controlled by kernel config RANDOM_TRUST_BOOTLOADER. Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Theodore Ts'o <tytso@mit.edu> # drivers/char/random.c Signed-off-by: Will Deacon <will@kernel.org> (cherry picked from commit 428826f535) Signed-off-by: Mark Salyzyn <salyzyn@google.com> Bug: 148665638 Change-Id: I54fb81eb88b955ead400fd39180c0fa41de37c8e		2020-02-19 14:34:33 -08:00
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acpi
asm-generic
clocksource
crypto
drm
dt-bindings
keys
kvm
linux	BACKPORT: fdt: add support for rng-seed	2020-02-19 14:34:33 -08:00
math-emu
media
memory
misc
net
pcmcia
ras
rdma	RDMA/uverbs: Verify MR access flags	2020-02-14 16:33:23 -05:00
scsi
soc
sound
target
trace	UPSTREAM: random: only read from /dev/random after its pool has received 128 bits	2020-02-19 14:34:33 -08:00
uapi
video
xen