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87 lines
2.2 KiB
87 lines
2.2 KiB
// SPDX-License-Identifier: GPL-2.0
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/*
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* drivers/samsung/sec_kcompat.c
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*
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* COPYRIGHT(C) 2019 Samsung Electronics Co., Ltd. All Right Reserved.
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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 and
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* only version 2 as published by the Free Software Foundation.
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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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#define pr_fmt(fmt) KBUILD_MODNAME ":%s() " fmt, __func__
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#include <linux/bitmap.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#if IS_ENABLED(CONFIG_MSM_SMEM)
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#include <soc/qcom/smem.h>
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#endif
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#include "sec_kcompat.h"
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0)
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#if IS_ENABLED(CONFIG_MSM_SMEM)
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void * __weak qcom_smem_get(unsigned host, unsigned item, size_t *size)
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{
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void * ret;
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unsigned int size_tmp = 0;
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ret = smem_get_entry(item, &size_tmp, SMEM_APPS, host);
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*size = (size_t)size_tmp;
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return ret;
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}
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phys_addr_t __weak qcom_smem_virt_to_phys(void *p)
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{
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return smem_virt_to_phys(p) & 0xFFFFFFFFULL;
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}
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#endif /* CONFIG_MSM_SMEM */
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#endif /* KERNEL_VERSION(4,14,0) */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4,19,0)
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unsigned long * __weak bitmap_alloc(unsigned int nbits, gfp_t flags)
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{
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return kmalloc_array(BITS_TO_LONGS(nbits), sizeof(unsigned long),
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flags);
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}
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unsigned long * __weak bitmap_zalloc(unsigned int nbits, gfp_t flags)
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{
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return bitmap_alloc(nbits, flags | __GFP_ZERO);
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}
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#endif /* KERNEL_VERSION(4,19,0) */
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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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#define SCM_WDOG_DEBUG_BOOT_PART 0x9
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void __weak qcom_scm_disable_sdi(void)
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{
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int ret;
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struct scm_desc desc = {
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.args[0] = 1,
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.args[1] = 0,
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.arginfo = SCM_ARGS(2),
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};
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/* Needed to bypass debug image on some chips */
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ret = scm_call2_atomic(SCM_SIP_FNID(SCM_SVC_BOOT,
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SCM_WDOG_DEBUG_BOOT_PART), &desc);
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if (ret)
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pr_err("Failed to disable wdog debug: %d\n", ret);
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}
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#endif
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MODULE_DESCRIPTION("sec-kcompat");
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MODULE_LICENSE("GPL v2");
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