This patch set adds hardware acceleration for SHA 256
with the help of ACE.
Changes since v1:
- Patch-1: Fixed few nits.
- Patch-2: Removed not required config.
- Patch-3: Added sha256 to hash command instead of new sha256 command.
Changes since v2:
- Patch-1:
- Added falling back to software sha256 in case length exceeds
buffer limit.
- Reduced one tab at lines 533, 559 and 571 in the patch.
- Removed space after a cast at line 506 in the patch.
- Removed blank line at line 561 in the patch.
- Removed space before semicolon at line 576 in the patch.
- Patch-2:
- Added "SHA1" in the comment for config.
- Patch-3:
- Added new nodes for SHA1 and SHA256 in struct hash_algo for
the case when ACE is enabled.
- Added new declaration for function pointer hash_func_ws with
different return type.
- Patch-4:
- New patch to enable config for hash command.
Changes since v3:
- Patch-1:
- Removed buffer limit since there are 2 regs for address
hash_msg_size_high and low.
That means buffer length could go upto 2^64 bits which is
practically
- Removed falling back to software sha256 because there is no
buffer limit.
- Removed "/ 4" to sha1 and sha256 lengths and added increment
to 4 in for loop at line 573.
- Timed out still kept to be 100 ms since this is enough for
hardware to switch status to idle from busy.
In case it couldn't that means h/w is faulty.
- Patch-2:
- Added "Acked-by: Simon Glass <[email protected]>".
- Patch-3:
- New patch.
- Patch-4:
- Changed command names to lower case in algo struct.
- Added generic ace_sha config.
- Patch-5: Added acked-by Simon Glass
- Added new generic config for ace_sha to enable ace support in
hash.c.
Akshay Saraswat (5):
Exynos: Add hardware accelerated SHA 256
Exynos: config: Enable ACE HW for SHA 256 for Exynos
gen: Change return type to int for hash_func_ws function pointer
gen: Add ACE acceleration to hash
Exynos: config: Enable hash command
Makefile | 1 +
arch/arm/include/asm/arch-exynos/cpu.h | 4 +
common/hash.c | 14 ++
drivers/crypto/Makefile | 47 +++++
drivers/crypto/ace_sfr.h | 310 +++++++++++++++++++++++++++++++++
drivers/crypto/ace_sha.c | 122 +++++++++++++
include/ace_sha.h | 42 +++++
include/configs/exynos5250-dt.h | 5 +
include/hash.h | 2 +-
include/sha1.h | 2 +-
include/sha256.h | 2 +-
lib/sha1.c | 4 +-
lib/sha256.c | 4 +-
13 files changed, 554 insertions(+), 5 deletions(-)
create mode 100644 drivers/crypto/Makefile
create mode 100644 drivers/crypto/ace_sfr.h
create mode 100644 drivers/crypto/ace_sha.c
create mode 100644 include/ace_sha.h
--
1.8.0
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