77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
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/*
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* Set OEM flags
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*
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* Copyright (C) 2018 Samsung Electronics, Inc.
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* Jonghun Song, <justin.song@samsung.com>
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* Egor Ulesykiy, <e.uelyskiy@samsung.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/debugfs.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#if defined(CONFIG_TEEGRIS_VERSION) && (CONFIG_TEEGRIS_VERSION >= 4)
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#include "extensions/irs.h"
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#else
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#include "tzirs.h"
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#endif
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#include "oemflag_arch.h"
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static uint32_t run_cmd_teegris(uint32_t cmd, uint32_t arg1,
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uint32_t arg2, uint32_t arg3)
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{
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int ret = 0;
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unsigned long p1, p2, p3;
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pr_info("[oemflag]tzirs cmd\n");
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p1 = arg2; // param.name
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p2 = arg3; // param.value
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p3 = cmd; // param.func_cmd
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pr_info("[oemflag]before: id = 0x%lx, value = 0x%lx, cmd = 0x%lx\n",
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(unsigned long)p1, (unsigned long)p2, (unsigned long)p3);
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ret = tzirs_smc(&p1, &p2, &p3);
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pr_info("[oemflag]after: id = 0x%lx, value = 0x%lx, cmd = 0x%lx\n",
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(unsigned long)p1, (unsigned long)p2, (unsigned long)p3);
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if (ret) {
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pr_info("[oemflag]Unable to send IRS_CMD : id = 0x%lx, ret = %d\n",
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(unsigned long)p1, ret);
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return -EFAULT;
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}
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if (arg1)
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return p2;
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else
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return ret;
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}
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int set_tamper_fuse(enum oemflag_id name)
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{
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int ret;
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ret = run_cmd_teegris(IRS_SET_FLAG_VALUE_CMD, 0, name, 1);
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return ret;
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}
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int get_tamper_fuse(enum oemflag_id name)
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{
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int ret;
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ret = run_cmd_teegris(IRS_GET_FLAG_VAL_CMD, 1, name, 0);
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return ret;
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}
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