46 lines
1 KiB
C
46 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/arm-smccc.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/printk.h>
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#include <linux/soc/mediatek/mtk_sip_svc.h>
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#include <soc/mediatek/emi.h>
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DEFINE_SPINLOCK(emidbg_lock);
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/*
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* mtk_emidbg_dump - dump emi full status to atf log
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*
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*/
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void mtk_emidbg_dump(void)
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{
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unsigned long spinlock_save_flags;
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struct arm_smccc_res smc_res;
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spin_lock_irqsave(&emidbg_lock, spinlock_save_flags);
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arm_smccc_smc(MTK_SIP_EMIMPU_CONTROL, MTK_EMIDBG_DUMP,
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0, 0, 0, 0, 0, 0, &smc_res);
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while (smc_res.a0 > 0) {
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arm_smccc_smc(MTK_SIP_EMIMPU_CONTROL, MTK_EMIDBG_MSG,
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0, 0, 0, 0, 0, 0, &smc_res);
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pr_info("emidbg: %d, 0x%x, 0x%x, 0x%x\n",
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(int)smc_res.a0,
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(unsigned int)smc_res.a1,
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(unsigned int)smc_res.a2,
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(unsigned int)smc_res.a3);
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}
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spin_unlock_irqrestore(&emidbg_lock, spinlock_save_flags);
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}
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EXPORT_SYMBOL(mtk_emidbg_dump);
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MODULE_DESCRIPTION("MediaTek EMI Driver");
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MODULE_LICENSE("GPL v2");
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