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https://github.com/Telecominfraproject/OpenCellular.git
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824d9e7a86
This is required to be able to consolidate hardware and software hash implementations. BRANCH=none BUG=chrome-os-partner:43025 TEST=the device still boots up. Change-Id: If420541427bb316b97bc20a21fd3fd8a57708244 Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/313654 Reviewed-by: Nagendra Modadugu <ngm@google.com>
46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
/* Copyright 2015 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "key_ladder.h"
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#include "debug_printf.h"
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#include "registers.h"
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/* #include "setup.h" */
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#include "dcrypto.h"
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void key_ladder_step(uint32_t cert, const uint32_t *input)
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{
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uint32_t flags;
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GREG32(KEYMGR, SHA_ITOP) = 0; /* Clear status. */
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VERBOSE("Cert %2u: ", cert);
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GWRITE_FIELD(KEYMGR, SHA_USE_CERT, INDEX, cert);
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GWRITE_FIELD(KEYMGR, SHA_USE_CERT, ENABLE, 1);
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GWRITE_FIELD(KEYMGR, SHA_CFG_EN, INT_EN_DONE, 1);
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GWRITE_FIELD(KEYMGR, SHA_TRIG, TRIG_GO, 1);
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if (input) {
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int i;
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for (i = 0; i < 8; ++i)
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GREG32(KEYMGR, SHA_INPUT_FIFO) = *input++;
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GWRITE_FIELD(KEYMGR, SHA_TRIG, TRIG_STOP, 1);
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}
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while (!GREG32(KEYMGR, SHA_ITOP))
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;
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GREG32(KEYMGR, SHA_ITOP) = 0; /* Clear status. */
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flags = GREG32(KEYMGR, HKEY_ERR_FLAGS);
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if (flags)
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debug_printf("Cert %2u: fail %x\n", cert, flags);
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else
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VERBOSE("flags %x\n", flags);
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}
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