98 lines
2.3 KiB
C
Executable File
98 lines
2.3 KiB
C
Executable File
/*
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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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* Nguyen Hoang Thai Kiet, <kiet.nht@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/printk.h>
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#include <linux/types.h>
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#include <linux/version.h>
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#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
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#include <soc/qcom/scm.h>
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#else
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#include <soc/qcom/qseecom_scm.h>
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#endif
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#include "tzic.h"
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#ifndef SCM_SVC_FUSE
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#define SCM_SVC_FUSE 0x08
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#endif
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#define SCM_BLOW_SW_FUSE_ID 0x01
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#define SMC_FUSE 0x83000004
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#define SCM_IS_SW_FUSE_BLOWN_ID 0x02
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static int set_tamper_fuse_qsee(uint32_t index)
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{
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struct scm_desc desc = {0};
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uint32_t fuse_id;
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desc.args[0] = fuse_id = index;
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desc.arginfo = SCM_ARGS(1);
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#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
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return scm_call2(SCM_SIP_FNID(SCM_SVC_FUSE, SCM_BLOW_SW_FUSE_ID),
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&desc);
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#else
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return qcom_scm_qseecom_call(SCM_SIP_FNID(SCM_SVC_FUSE, SCM_BLOW_SW_FUSE_ID),
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&desc);
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#endif
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}
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static int get_tamper_fuse_qsee(uint32_t index)
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{
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int ret;
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uint32_t fuse_id;
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uint8_t resp_buf;
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size_t resp_len;
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struct scm_desc desc = {0};
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resp_len = sizeof(resp_buf);
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desc.args[0] = fuse_id = index;
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desc.arginfo = SCM_ARGS(1);
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#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
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ret = scm_call2(SCM_SIP_FNID(SCM_SVC_FUSE, SCM_IS_SW_FUSE_BLOWN_ID),
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&desc);
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#else
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ret = qcom_scm_qseecom_call(SCM_SIP_FNID(SCM_SVC_FUSE, SCM_IS_SW_FUSE_BLOWN_ID),
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&desc);
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#endif
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resp_buf = desc.ret[0];
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if (ret) {
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pr_info("scm_call/2 returned %d", ret);
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resp_buf = 0xff;
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}
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return resp_buf;
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}
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int tzic_oem_flags_set(enum oemflag_id index)
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{
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int ret;
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pr_info("[oemflag]qsee cmd\n");
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ret = set_tamper_fuse_qsee(index);
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return ret;
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}
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int tzic_oem_flags_get(enum oemflag_id index)
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{
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int ret;
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pr_info("[oemflag]qsee cmd\n");
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ret = get_tamper_fuse_qsee(index);
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return ret;
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}
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