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 sjg@chromium.org". - 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.
Changes since v4: - Patch-1: - Added include for clk.h. - Added define for MAX_FREQ. - Added timeout calculation as per frequency. - Changed "i+=4" to "i++" and "len" to "len/4" in for loop at line 591 in this patch. - Added two new functions ace_sha256 and ace_sha1. - Patch-2: None. - Patch-3: - Changed function names in struct algo. - Replaced ACE_SHA_TYPE to CHUNSZ in struct algo. - Patch-4: Added "Acked-by: Simon Glass sjg@chromium.org".
Changes since v5: - Patch-1: - Removed ace_sha.h. - Renamed ace_sfr.h as ace_sha.h. - Removed timeout and checking for PRNG_ERROR bit in HASH_STATUS register. PRNG_ERROR bit high means setup was not done properly. Since there is no way to detect faulty h/w, we consider the possible fact that h/w should not be able to setup feed properly if it's faulty. - Renamed function name ace_sha256 to hw_sha256 and ace_sha1 to hw_sha1. - Patch-2: None. - Patch-3: - Added file hw_sha.h. - Changed CONFIG_ACE_SHA to CONFIG_SHA_HW_ACCEL. - Renamed function names ace_sha1 and ace_sha256 to hw_sha1 and hw_sha256 respectively. - Patch-4: - Removed "Acked-by: Simon Glass sjg@chromium.org" because of a change. - Changed CONFIG_ACE_SHA to CONFIG_SHA_HW_ACCEL.
Changes since v6: - Patch-1: Added "Acked-by: Simon Glass sjg@chromium.org". - Patch-2: None. - Patch-3: - Changed position of "hw_sha.h" among includes (alpha order). - Rebased patch. - Patch-4: Added "Acked-by: Simon Glass sjg@chromium.org".
Changes since v7: - Patch-1: - Moved ace_sha.h to drivers/crypto. - Removed parantheses where not required in ace_sha.h. - Removed leftover time limit comment in ace_sha.c. - Replaced "break" with "return -EBUSY" in PRNGERROR check. - Patch-2: None. - Patch-3: Added "Acked-by: Simon Glass sjg@chromium.org". - Patch-4: None.
Akshay Saraswat (4): Exynos: Add hardware accelerated SHA256 and SHA1 Exynos: config: Enable ACE HW for SHA 256 for Exynos gen: Add sha h/w acceleration to hash Exynos: config: Enable hash command
Makefile | 1 + arch/arm/include/asm/arch-exynos/cpu.h | 4 + common/hash.c | 18 ++ drivers/crypto/Makefile | 47 +++++ drivers/crypto/ace_sha.c | 126 +++++++++++++ drivers/crypto/ace_sha.h | 325 +++++++++++++++++++++++++++++++++ include/configs/exynos5250-dt.h | 5 + include/hw_sha.h | 50 +++++ 8 files changed, 576 insertions(+) create mode 100644 drivers/crypto/Makefile create mode 100644 drivers/crypto/ace_sha.c create mode 100644 drivers/crypto/ace_sha.h create mode 100644 include/hw_sha.h