64 lines
1.4 KiB
C
Executable file
64 lines
1.4 KiB
C
Executable file
/*
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* Copyright (c) 2020 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* EXYNOS - Security Dump Manager support
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <soc/samsung/exynos-smc.h>
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#include <soc/samsung/debug-snapshot.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/of.h>
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#include <linux/printk.h>
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static int exynos_sdm_dump_secure_region(void)
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{
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int ret;
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ret = exynos_smc(SMC_CMD_DUMP_SECURE_REGION, 0, 0, 0);
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pr_info("%s: 0x%x\n", __func__, ret);
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return NOTIFY_OK;
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}
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int exynos_sdm_flush_secdram(void)
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{
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return exynos_smc(SMC_CMD_FLUSH_SECDRAM, 0, 0, 0);
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}
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static int exynos_sdm_handler(struct notifier_block *nb, unsigned long l, void *buf)
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{
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(void) l;
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(void) buf;
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if (dbg_snapshot_is_scratch())
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return exynos_sdm_dump_secure_region();
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return 0;
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}
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static struct notifier_block sdm_dump = {
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.notifier_call = exynos_sdm_handler,
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};
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static int __init exynos_sdm_init(void)
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{
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pr_info("SDM: register sdm to panic notifier\n");
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atomic_notifier_chain_register(&panic_notifier_list, &sdm_dump);
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pr_info("SDM: sdm driver init success.\n");
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return 0;
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}
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module_init(exynos_sdm_init);
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MODULE_DESCRIPTION("Exynos Security Dump Manager driver");
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MODULE_AUTHOR("<jiye.min@samsung.com>");
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MODULE_LICENSE("GPL");
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