text: /* Copyright Statement:
  *
  * This software/firmware and related documentation ("MediaTek Software") are
  * protected under relevant copyright laws. The information contained herein
  * is confidential and proprietary to MediaTek Inc. and/or its licensors.
  * Without the prior written permission of MediaTek inc. and/or its licensors,
  * any reproduction, modification, use or disclosure of MediaTek Software,
  * and information contained herein, in whole or in part, shall be strictly prohibited.
  */
  /* MediaTek Inc. (C) 2016. All rights reserved.
  *
  * BY OPENING THIS FILE, RECEIVER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
  * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
  * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO RECEIVER ON
  * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
  * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
  * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
  * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND RECEIVER AGREES TO LOOK ONLY TO SUCH
  * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. RECEIVER EXPRESSLY ACKNOWLEDGES
  * THAT IT IS RECEIVER'S SOLE RESPONSIBILITY TO OBTAIN FROM ANY THIRD PARTY ALL PROPER LICENSES
  * CONTAINED IN MEDIATEK SOFTWARE. MEDIATEK SHALL ALSO NOT BE RESPONSIBLE FOR ANY MEDIATEK
  * SOFTWARE RELEASES MADE TO RECEIVER'S SPECIFICATION OR TO CONFORM TO A PARTICULAR
  * STANDARD OR OPEN FORUM. RECEIVER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND
  * CUMULATIVE LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
  * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
  * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY RECEIVER TO
  * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
  */
  
  #include <string.h>
  #include <malloc.h>
  #ifdef MTK_GPT_SCHEME_SUPPORT
  #include <platform/partition.h>
  #else
  #include <mt_partition.h>
  #endif
  #include <stdint.h>
  #include <string.h>
  #include <video.h>
  #include <platform/mtk_key.h>
  #include <platform/mtk_wdt.h>
  
  #include "aee.h"
  #include "kdump.h"
  
  static int null_write_cb(void *handle, void *buf, int size)
  {
  	return size;
  }
  
  int kdump_null_output(const struct mrdump_control_block *mrdump_cb, uint64_t total_dump_size)
  {
  	const struct mrdump_machdesc *kparams = &mrdump_cb->machdesc;
  
  	voprintf_info("null dumping(address %x, size:%lluM)\n", kparams->phys_offset, total_dump_size / 0x100000UL);
  	mtk_wdt_restart();
  
  	bool ok = true;
  	void *bufp = kdump_core_header_init(mrdump_cb, kparams->phys_offset, total_dump_size);
  	if (bufp != NULL) {
  		mtk_wdt_restart();
  		struct kzip_file *zf = kzip_open(NULL, null_write_cb);
  		if (zf != NULL) {
  			struct kzip_memlist memlist[3];
  			memlist[0].address = (uint64_t)(uintptr_t)bufp;
  			memlist[0].size = KDUMP_CORE_HEADER_SIZE;
  			memlist[0].need2map = false;
  			memlist[1].address = kparams->phys_offset;
  			memlist[1].size = total_dump_size;
  			memlist[1].need2map = true;
  			memlist[2].address = 0;
  			memlist[2].size = 0;
  			memlist[2].need2map = false;
  			kzip_add_file(zf, memlist, "SYS_COREDUMP");
  			kzip_close(zf);
  			zf = NULL;
  		} else {
  			ok = false;
  		}
  		free(bufp);
  	}
  
  	mtk_wdt_restart();
  	if (ok) {
  		voprintf_info("%s: dump finished, dumped.\n", __func__);
  		mrdump_status_ok("NULL-OUTPUT\n");
  	}
  	return 0;
  }
  