src/bsp/lk/lib/aee/ram_console.c - T800 - Gitiles

 /*
  * Copyright (c) 2018 MediaTek Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files
  * (the "Software"), to deal in the Software without restriction,
  * including without limitation the rights to use, copy, modify, merge,
  * publish, distribute, sublicense, and/or sell copies of the Software,
  * and to permit persons to whom the Software is furnished to do so,
  * subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be
  * included in all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */

 #include <arch/mmu.h>
 #include <platform/mtk_wdt.h>
 #include <ram_console.h>
 #include <stdio.h>
 #include <stdlib.h>     // for ALIGN()
 #include <string.h>
 #include <sys/types.h>

 #define RAM_CONSOLE_SIG (0x43474244) /* DBGC */
 #define MOD "RAM_CONSOLE"

 struct ram_console_buffer {
     u32 sig;
     /* for size comptible */
     u32 off_pl;
     u32 off_lpl;
     u32 sz_pl;
     u32 off_lk;
     u32 off_llk; /* last lk */
     u32 sz_lk;
     u32 padding[2]; /* size = 2 * 16 = 32 byte */
     u32 dump_step;
     u32 sz_buffer;
     u32 off_linux;
     u32 off_console;
     u32 padding2[3];
 };

 #define RAM_CONSOLE_PL_SIZE 3
 struct reboot_reason_pl {
     u32 wdt_status;
     u32 last_func[RAM_CONSOLE_PL_SIZE];
 };

 #define RAM_CONSOLE_LK_SIZE 16
 struct reboot_reason_lk {
     u32 last_func[RAM_CONSOLE_LK_SIZE];
 };

 struct reboot_reason_kernel {
     u32 fiq_step;
     /* 0xaeedeadX: X=1 (HWT), X=2 (KE), X=3 (nested panic) */
     /* details see enum AEE_EXP_TYPE_NUM in ram_console_common.h */
     u32 exp_type;
     u32 others[0];
 };

 static struct ram_console_buffer *ram_console = NULL;
 static uint32_t ram_console_size;

 #define U_VAR(type) rc_##type
 static unsigned int U_VAR(wdt_status), U_VAR(fiq_step), U_VAR(exp_type);
 static bool U_VAR(set_flag) = false;

 static void ram_console_ptr_init(void)
 {
     if (ram_console && ram_console_size) {
         LOG("%s. already init start: 0x%zx, size: 0x%x, sig: 0x%x\n",
              MOD, (size_t)ram_console, ram_console_size, ram_console->sig);
         return;
     }

     ram_console = (struct ram_console_buffer *)PA_TO_VA((paddr_t)RAM_CONSOLE_DEF_ADDR);
     ram_console_size = RAM_CONSOLE_DEF_SIZE;
     LOG("%s. pa start: 0x%zx, size: 0x%x\n", MOD, (size_t)RAM_CONSOLE_DEF_ADDR, RAM_CONSOLE_DEF_SIZE);
 }

 void pl_ram_console_init(void)
 {
     int i;
     struct reboot_reason_pl *rr_pl;
     ram_console = (struct ram_console_buffer *)PA_TO_VA((paddr_t)RAM_CONSOLE_DEF_ADDR);
     ram_console_size = RAM_CONSOLE_DEF_SIZE;
     LOG("pl_ram_console_init ram_console pa: 0x%zx, va:0x%zx, size: 0x%x\n",
          (size_t)RAM_CONSOLE_DEF_ADDR, (size_t)ram_console, RAM_CONSOLE_DEF_SIZE);

     if (ram_console->sig == RAM_CONSOLE_SIG && ram_console->sz_pl == sizeof(struct reboot_reason_pl)
         && ram_console->off_pl + ALIGN(ram_console->sz_pl, 64) == ram_console->off_lpl) {
         rr_pl = (void *)ram_console + ram_console->off_pl;
         for (i = 0; i < RAM_CONSOLE_PL_SIZE; i++) {
             LOG("0x%x ", rr_pl->last_func[i]);
         }
         LOG("\n");
         memcpy((void *)ram_console + ram_console->off_lpl, (void *)ram_console + ram_console->off_pl,
             ram_console->sz_pl);
     } else {
         memset(ram_console, 0, ram_console_size);
         ram_console->sig = RAM_CONSOLE_SIG;
         ram_console->off_pl = sizeof(struct ram_console_buffer);
         ram_console->sz_pl = sizeof(struct reboot_reason_pl);
         ram_console->off_lpl = ram_console->off_pl + ALIGN(ram_console->sz_pl, 64);
         LOG("pl_ram_console_init first init\n");
     }
 }

 void ram_console_init(void)
 {
     int i;
     struct reboot_reason_lk *rr_lk;

     ram_console_ptr_init();
     if (ram_console) {
         LOG("%s. start: 0x%lx, size: 0x%x\n", MOD, (size_t)ram_console, ram_console_size);
     } else {
         LOG("%s. sig not match\n", MOD);
         return;
     }

     ram_console->off_lk = ram_console->off_lpl + ALIGN(ram_console->sz_pl, 64);;
     ram_console->off_llk = ram_console->off_lk + ALIGN(sizeof(struct reboot_reason_lk), 64);
     ram_console->sz_lk = sizeof(struct reboot_reason_lk);
     if (ram_console->sz_lk == sizeof(struct reboot_reason_lk) && (ram_console->off_lk +
         ram_console->sz_lk == ram_console->off_llk)) {
         LOG("%s. lk last status: ", MOD);
         rr_lk = (void *)ram_console + ram_console->off_lk;
         for (i = 0; i < RAM_CONSOLE_LK_SIZE; i++) {
             LOG("0x%x ", rr_lk->last_func[i]);
         }
         LOG("\n");
         memcpy((void *)ram_console + ram_console->off_llk, (void *)ram_console +
             ram_console->off_lk, ram_console->sz_lk);
     } else {
         LOG("%s. lk size mismatch %x + %x != %x\n", MOD, ram_console->sz_lk,
             ram_console->off_lk, ram_console->off_llk);
         ram_console->sz_lk = sizeof(struct reboot_reason_lk);
     }
     ram_console->off_linux = ram_console->off_llk + ALIGN(ram_console->sz_lk, 64);
 }

 void ram_console_reboot_reason_save(u32 rgu_status)
 {
     struct reboot_reason_pl *rr_pl;
     if (ram_console) {
         rr_pl = (void *)ram_console + ram_console->off_pl;
         rr_pl->wdt_status = rgu_status;
         LOG("%s wdt status (0x%x)=0x%x\n", MOD, rr_pl->wdt_status, rgu_status);
     }
 }

 //#define RE_BOOT_BY_WDT_SW 2
 #define RE_BOOT_NORMAL_BOOT 0
 #define RE_BOOT_BY_EINT 256/*we can find the definition from preloader ,this value should  sync with preloader incase issue happened*/
 #define RE_BOOT_BY_SYSRST 512/*we can find the definition from preloader ,this value should  sync with preloader incase issue happened*/

 #ifdef MTK_PMIC_FULL_RESET
 #define RE_BOOT_FULL_PMIC 0x800
 #endif

 int ram_console_reboot_by_mrdump_key(void)
 {
     unsigned int wdt_status;
     wdt_status = ((struct reboot_reason_pl *)((void *)ram_console + ram_console->off_pl))->wdt_status;
     return ((wdt_status & RE_BOOT_BY_EINT)|(wdt_status & RE_BOOT_BY_SYSRST))?true:false;
 }

 bool ram_console_should_restore(unsigned char *ram_console_ptr)
 {
     unsigned int fiq_step, wdt_status, exp_type;
     struct ram_console_buffer *tmp_ram_console = (struct ram_console_buffer *)ram_console_ptr;

     if (U_VAR(set_flag) && tmp_ram_console && tmp_ram_console->off_linux &&
         (tmp_ram_console->off_linux == (tmp_ram_console->off_llk +
         ALIGN(tmp_ram_console->sz_lk, 64))) &&
         (tmp_ram_console->off_pl == sizeof(struct ram_console_buffer))) {
         wdt_status = ((struct reboot_reason_pl*)((void*)tmp_ram_console +
             tmp_ram_console->off_pl))->wdt_status;
         fiq_step = ((struct reboot_reason_kernel*)((void*)tmp_ram_console +
             tmp_ram_console->off_linux))->fiq_step;
         exp_type = RAM_CONSOLE_EXP_TYPE_DEC(((struct reboot_reason_kernel *)((void *)tmp_ram_console
             + tmp_ram_console->off_linux))->exp_type);

         if ((wdt_status != 0 && wdt_status != U_VAR(wdt_status)) ||
             (fiq_step != 0 && fiq_step != U_VAR(fiq_step)) ||
             (exp_type != 0 && exp_type != U_VAR(exp_type))) {
                 return true;
             }
     }
     return false;
 }

 #ifdef MTK_PMIC_FULL_RESET
 bool ram_console_reboot_by_cold_reset(void)
 {
     unsigned int wdt_status;
     wdt_status = ((struct reboot_reason_pl *)((void *)ram_console + ram_console->off_pl))->wdt_status;
     return (wdt_status & RE_BOOT_FULL_PMIC) ? true : false;
 }
 #endif

 int ram_console_get_wdt_status(unsigned int *wdt_status)
 {
     if (wdt_status && U_VAR(set_flag)) {
         *wdt_status = U_VAR(wdt_status);
         return true;
     }
     return false;
 }

 int ram_console_get_fiq_step(unsigned int *fiq_step)
 {
     if (fiq_step && U_VAR(set_flag)) {
         *fiq_step = U_VAR(fiq_step);
         return true;
     }
     return false;
 }

 int ram_console_get_exp_type(unsigned int *exp_type)
 {
     if (exp_type && U_VAR(set_flag)) {
         *exp_type = U_VAR(exp_type);
         return true;
     }
     return false;
 }

 int ram_console_set_exp_type(unsigned int exp_type)
 {
     bool ret = false;
     if (ram_console && ram_console->off_linux &&
             (ram_console->off_linux == (ram_console->off_llk + ALIGN(ram_console->sz_lk, 64))) &&
             (ram_console->off_pl == sizeof(struct ram_console_buffer))) {
         if (exp_type < 16) {
             exp_type = exp_type ^ RAM_CONSOLE_EXP_TYPE_MAGIC;
             ((struct reboot_reason_kernel *)((void *)ram_console + ram_console->off_linux))->exp_type = exp_type;
             ret = true;
         } else {
             LOG("%s. set exp type failed: off_linux:0x%x, off_llk:0x%x, off_pl:0x%x, exp type:%d\n",
                 MOD, ram_console->off_linux, ram_console->off_llk, ram_console->off_pl, exp_type);
         }
     }
     return ret;
 }

 int ram_console_is_abnormal_boot(void)
 {
     unsigned int fiq_step, wdt_status, exp_type;
     int reinit_flag = 0;

     if (!ram_console) {
         ram_console_ptr_init();
         reinit_flag = 1;
     }
     if (ram_console && ram_console->off_linux &&
             (ram_console->off_linux == (ram_console->off_llk + ALIGN(ram_console->sz_lk, 64))) &&
             (ram_console->off_pl == sizeof(struct ram_console_buffer))) {
         wdt_status = ((struct reboot_reason_pl *)((void *)ram_console + ram_console->off_pl))->wdt_status;
         fiq_step = ((struct reboot_reason_kernel *)((void *)ram_console + ram_console->off_linux))->fiq_step;
         exp_type = ((struct reboot_reason_kernel *)((void *)ram_console + ram_console->off_linux))->exp_type;
         LOG("%s. wdt_status 0x%x, fiq_step 0x%x, exp_type 0x%x\n", MOD, wdt_status, fiq_step, RAM_CONSOLE_EXP_TYPE_DEC(exp_type));
         if (fiq_step != 0 && (exp_type ^ RAM_CONSOLE_EXP_TYPE_MAGIC) >= 16) {
             fiq_step = 0;
             ((struct reboot_reason_kernel *)((void *)ram_console + ram_console->off_linux))->fiq_step = fiq_step;
         }
         U_VAR(wdt_status) = wdt_status;
         U_VAR(fiq_step) = fiq_step;
         U_VAR(exp_type) = RAM_CONSOLE_EXP_TYPE_DEC(exp_type);
         U_VAR(set_flag) = true;
         LOG("%s. set reboot reason info done\n", MOD);

         if ((wdt_status == RE_BOOT_BY_WDT_SW && fiq_step == 0 && U_VAR(exp_type) == 0) /* adb reboot */
 #ifdef MTK_PMIC_FULL_RESET
             || (wdt_status == RE_BOOT_FULL_PMIC && fiq_step == 0) /* full pmic reset */
 #endif
             || (wdt_status == RE_BOOT_NORMAL_BOOT))  /* power off->on */
             return false;
         else
             return true;
     } else {
         if (ram_console) {
             LOG("%s. set reboot reason info failed: off_linux:0x%x, off_llk:0x%x, off_pl:0x%x, reinit flag:%d\n",
                 MOD, ram_console->off_linux, ram_console->off_llk, ram_console->off_pl, reinit_flag);
         } else {
             LOG("%s. ram console buffer NULL\n", MOD);
         }
     }
     return false;
 }

 void ram_console_lk_save(unsigned int val, int index)
 {
     struct reboot_reason_lk *rr_lk;
     if (ram_console && ram_console->off_lk < ram_console_size) {
         rr_lk = (void *)ram_console + ram_console->off_lk;
         if (index < RAM_CONSOLE_LK_SIZE)
             rr_lk->last_func[index] = val;
     }
 }

 void ram_console_addr_size(unsigned long *addr, unsigned long *size)
 {
     *addr = (unsigned long)ram_console;
     *size = ram_console_size;
 }

 void ram_console_set_dump_step(unsigned int step)
 {
     if (ram_console) {
         ram_console->dump_step = step;
     }
 }

 int ram_console_get_dump_step(void)
 {
     if (ram_console)
         return ram_console->dump_step;
     else {
         LOG("%s. ram_console not ready\n", MOD);
         return 0;
     }
 }
	/*
	* Copyright (c) 2018 MediaTek Inc.
	*
	* Permission is hereby granted, free of charge, to any person obtaining
	* a copy of this software and associated documentation files
	* (the "Software"), to deal in the Software without restriction,
	* including without limitation the rights to use, copy, modify, merge,
	* publish, distribute, sublicense, and/or sell copies of the Software,
	* and to permit persons to whom the Software is furnished to do so,
	* subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be
	* included in all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
	* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
	* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
	* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	*/

	#include <arch/mmu.h>
	#include <platform/mtk_wdt.h>
	#include <ram_console.h>
	#include <stdio.h>
	#include <stdlib.h> // for ALIGN()
	#include <string.h>
	#include <sys/types.h>

	#define RAM_CONSOLE_SIG (0x43474244) /* DBGC */
	#define MOD "RAM_CONSOLE"

	struct ram_console_buffer {
	u32 sig;
	/* for size comptible */
	u32 off_pl;
	u32 off_lpl;
	u32 sz_pl;
	u32 off_lk;
	u32 off_llk; /* last lk */
	u32 sz_lk;
	u32 padding[2]; /* size = 2 * 16 = 32 byte */
	u32 dump_step;
	u32 sz_buffer;
	u32 off_linux;
	u32 off_console;
	u32 padding2[3];
	};

	#define RAM_CONSOLE_PL_SIZE 3
	struct reboot_reason_pl {
	u32 wdt_status;
	u32 last_func[RAM_CONSOLE_PL_SIZE];
	};

	#define RAM_CONSOLE_LK_SIZE 16
	struct reboot_reason_lk {
	u32 last_func[RAM_CONSOLE_LK_SIZE];
	};

	struct reboot_reason_kernel {
	u32 fiq_step;
	/* 0xaeedeadX: X=1 (HWT), X=2 (KE), X=3 (nested panic) */
	/* details see enum AEE_EXP_TYPE_NUM in ram_console_common.h */
	u32 exp_type;
	u32 others[0];
	};

	static struct ram_console_buffer *ram_console = NULL;
	static uint32_t ram_console_size;

	#define U_VAR(type) rc_##type
	static unsigned int U_VAR(wdt_status), U_VAR(fiq_step), U_VAR(exp_type);
	static bool U_VAR(set_flag) = false;

	static void ram_console_ptr_init(void)
	{
	if (ram_console && ram_console_size) {
	LOG("%s. already init start: 0x%zx, size: 0x%x, sig: 0x%x\n",
	MOD, (size_t)ram_console, ram_console_size, ram_console->sig);
	return;
	}

	ram_console = (struct ram_console_buffer *)PA_TO_VA((paddr_t)RAM_CONSOLE_DEF_ADDR);
	ram_console_size = RAM_CONSOLE_DEF_SIZE;
	LOG("%s. pa start: 0x%zx, size: 0x%x\n", MOD, (size_t)RAM_CONSOLE_DEF_ADDR, RAM_CONSOLE_DEF_SIZE);
	}

	void pl_ram_console_init(void)
	{
	int i;
	struct reboot_reason_pl *rr_pl;
	ram_console = (struct ram_console_buffer *)PA_TO_VA((paddr_t)RAM_CONSOLE_DEF_ADDR);
	ram_console_size = RAM_CONSOLE_DEF_SIZE;
	LOG("pl_ram_console_init ram_console pa: 0x%zx, va:0x%zx, size: 0x%x\n",
	(size_t)RAM_CONSOLE_DEF_ADDR, (size_t)ram_console, RAM_CONSOLE_DEF_SIZE);

	if (ram_console->sig == RAM_CONSOLE_SIG && ram_console->sz_pl == sizeof(struct reboot_reason_pl)
	&& ram_console->off_pl + ALIGN(ram_console->sz_pl, 64) == ram_console->off_lpl) {
	rr_pl = (void *)ram_console + ram_console->off_pl;
	for (i = 0; i < RAM_CONSOLE_PL_SIZE; i++) {
	LOG("0x%x ", rr_pl->last_func[i]);
	}
	LOG("\n");
	memcpy((void )ram_console + ram_console->off_lpl, (void )ram_console + ram_console->off_pl,
	ram_console->sz_pl);
	} else {
	memset(ram_console, 0, ram_console_size);
	ram_console->sig = RAM_CONSOLE_SIG;
	ram_console->off_pl = sizeof(struct ram_console_buffer);
	ram_console->sz_pl = sizeof(struct reboot_reason_pl);
	ram_console->off_lpl = ram_console->off_pl + ALIGN(ram_console->sz_pl, 64);
	LOG("pl_ram_console_init first init\n");
	}
	}

	void ram_console_init(void)
	{
	int i;
	struct reboot_reason_lk *rr_lk;

	ram_console_ptr_init();
	if (ram_console) {
	LOG("%s. start: 0x%lx, size: 0x%x\n", MOD, (size_t)ram_console, ram_console_size);
	} else {
	LOG("%s. sig not match\n", MOD);
	return;
	}

	ram_console->off_lk = ram_console->off_lpl + ALIGN(ram_console->sz_pl, 64);;
	ram_console->off_llk = ram_console->off_lk + ALIGN(sizeof(struct reboot_reason_lk), 64);
	ram_console->sz_lk = sizeof(struct reboot_reason_lk);
	if (ram_console->sz_lk == sizeof(struct reboot_reason_lk) && (ram_console->off_lk +
	ram_console->sz_lk == ram_console->off_llk)) {
	LOG("%s. lk last status: ", MOD);
	rr_lk = (void *)ram_console + ram_console->off_lk;
	for (i = 0; i < RAM_CONSOLE_LK_SIZE; i++) {
	LOG("0x%x ", rr_lk->last_func[i]);
	}
	LOG("\n");
	memcpy((void )ram_console + ram_console->off_llk, (void )ram_console +
	ram_console->off_lk, ram_console->sz_lk);
	} else {
	LOG("%s. lk size mismatch %x + %x != %x\n", MOD, ram_console->sz_lk,
	ram_console->off_lk, ram_console->off_llk);
	ram_console->sz_lk = sizeof(struct reboot_reason_lk);
	}
	ram_console->off_linux = ram_console->off_llk + ALIGN(ram_console->sz_lk, 64);
	}

	void ram_console_reboot_reason_save(u32 rgu_status)
	{
	struct reboot_reason_pl *rr_pl;
	if (ram_console) {
	rr_pl = (void *)ram_console + ram_console->off_pl;
	rr_pl->wdt_status = rgu_status;
	LOG("%s wdt status (0x%x)=0x%x\n", MOD, rr_pl->wdt_status, rgu_status);
	}
	}

	//#define RE_BOOT_BY_WDT_SW 2
	#define RE_BOOT_NORMAL_BOOT 0
	#define RE_BOOT_BY_EINT 256/we can find the definition from preloader ,this value should sync with preloader incase issue happened/
	#define RE_BOOT_BY_SYSRST 512/we can find the definition from preloader ,this value should sync with preloader incase issue happened/

	#ifdef MTK_PMIC_FULL_RESET
	#define RE_BOOT_FULL_PMIC 0x800
	#endif

	int ram_console_reboot_by_mrdump_key(void)
	{
	unsigned int wdt_status;
	wdt_status = ((struct reboot_reason_pl )((void )ram_console + ram_console->off_pl))->wdt_status;
	return ((wdt_status & RE_BOOT_BY_EINT)\|(wdt_status & RE_BOOT_BY_SYSRST))?true:false;
	}

	bool ram_console_should_restore(unsigned char *ram_console_ptr)
	{
	unsigned int fiq_step, wdt_status, exp_type;
	struct ram_console_buffer tmp_ram_console = (struct ram_console_buffer )ram_console_ptr;

	if (U_VAR(set_flag) && tmp_ram_console && tmp_ram_console->off_linux &&
	(tmp_ram_console->off_linux == (tmp_ram_console->off_llk +
	ALIGN(tmp_ram_console->sz_lk, 64))) &&
	(tmp_ram_console->off_pl == sizeof(struct ram_console_buffer))) {
	wdt_status = ((struct reboot_reason_pl)((void)tmp_ram_console +
	tmp_ram_console->off_pl))->wdt_status;
	fiq_step = ((struct reboot_reason_kernel)((void)tmp_ram_console +
	tmp_ram_console->off_linux))->fiq_step;
	exp_type = RAM_CONSOLE_EXP_TYPE_DEC(((struct reboot_reason_kernel )((void )tmp_ram_console
	+ tmp_ram_console->off_linux))->exp_type);

	if ((wdt_status != 0 && wdt_status != U_VAR(wdt_status)) \|\|
	(fiq_step != 0 && fiq_step != U_VAR(fiq_step)) \|\|
	(exp_type != 0 && exp_type != U_VAR(exp_type))) {
	return true;
	}
	}
	return false;
	}

	#ifdef MTK_PMIC_FULL_RESET
	bool ram_console_reboot_by_cold_reset(void)
	{
	unsigned int wdt_status;
	wdt_status = ((struct reboot_reason_pl )((void )ram_console + ram_console->off_pl))->wdt_status;
	return (wdt_status & RE_BOOT_FULL_PMIC) ? true : false;
	}
	#endif

	int ram_console_get_wdt_status(unsigned int *wdt_status)
	{
	if (wdt_status && U_VAR(set_flag)) {
	*wdt_status = U_VAR(wdt_status);
	return true;
	}
	return false;
	}

	int ram_console_get_fiq_step(unsigned int *fiq_step)
	{
	if (fiq_step && U_VAR(set_flag)) {
	*fiq_step = U_VAR(fiq_step);
	return true;
	}
	return false;
	}

	int ram_console_get_exp_type(unsigned int *exp_type)
	{
	if (exp_type && U_VAR(set_flag)) {
	*exp_type = U_VAR(exp_type);
	return true;
	}
	return false;
	}

	int ram_console_set_exp_type(unsigned int exp_type)
	{
	bool ret = false;
	if (ram_console && ram_console->off_linux &&
	(ram_console->off_linux == (ram_console->off_llk + ALIGN(ram_console->sz_lk, 64))) &&
	(ram_console->off_pl == sizeof(struct ram_console_buffer))) {
	if (exp_type < 16) {
	exp_type = exp_type ^ RAM_CONSOLE_EXP_TYPE_MAGIC;
	((struct reboot_reason_kernel )((void )ram_console + ram_console->off_linux))->exp_type = exp_type;
	ret = true;
	} else {
	LOG("%s. set exp type failed: off_linux:0x%x, off_llk:0x%x, off_pl:0x%x, exp type:%d\n",
	MOD, ram_console->off_linux, ram_console->off_llk, ram_console->off_pl, exp_type);
	}
	}
	return ret;
	}

	int ram_console_is_abnormal_boot(void)
	{
	unsigned int fiq_step, wdt_status, exp_type;
	int reinit_flag = 0;

	if (!ram_console) {
	ram_console_ptr_init();
	reinit_flag = 1;
	}
	if (ram_console && ram_console->off_linux &&
	(ram_console->off_linux == (ram_console->off_llk + ALIGN(ram_console->sz_lk, 64))) &&
	(ram_console->off_pl == sizeof(struct ram_console_buffer))) {
	wdt_status = ((struct reboot_reason_pl )((void )ram_console + ram_console->off_pl))->wdt_status;
	fiq_step = ((struct reboot_reason_kernel )((void )ram_console + ram_console->off_linux))->fiq_step;
	exp_type = ((struct reboot_reason_kernel )((void )ram_console + ram_console->off_linux))->exp_type;
	LOG("%s. wdt_status 0x%x, fiq_step 0x%x, exp_type 0x%x\n", MOD, wdt_status, fiq_step, RAM_CONSOLE_EXP_TYPE_DEC(exp_type));
	if (fiq_step != 0 && (exp_type ^ RAM_CONSOLE_EXP_TYPE_MAGIC) >= 16) {
	fiq_step = 0;
	((struct reboot_reason_kernel )((void )ram_console + ram_console->off_linux))->fiq_step = fiq_step;
	}
	U_VAR(wdt_status) = wdt_status;
	U_VAR(fiq_step) = fiq_step;
	U_VAR(exp_type) = RAM_CONSOLE_EXP_TYPE_DEC(exp_type);
	U_VAR(set_flag) = true;
	LOG("%s. set reboot reason info done\n", MOD);

	if ((wdt_status == RE_BOOT_BY_WDT_SW && fiq_step == 0 && U_VAR(exp_type) == 0) /* adb reboot */
	#ifdef MTK_PMIC_FULL_RESET
	\|\| (wdt_status == RE_BOOT_FULL_PMIC && fiq_step == 0) /* full pmic reset */
	#endif
	\|\| (wdt_status == RE_BOOT_NORMAL_BOOT)) /* power off->on */
	return false;
	else
	return true;
	} else {
	if (ram_console) {
	LOG("%s. set reboot reason info failed: off_linux:0x%x, off_llk:0x%x, off_pl:0x%x, reinit flag:%d\n",
	MOD, ram_console->off_linux, ram_console->off_llk, ram_console->off_pl, reinit_flag);
	} else {
	LOG("%s. ram console buffer NULL\n", MOD);
	}
	}
	return false;
	}

	void ram_console_lk_save(unsigned int val, int index)
	{
	struct reboot_reason_lk *rr_lk;
	if (ram_console && ram_console->off_lk < ram_console_size) {
	rr_lk = (void *)ram_console + ram_console->off_lk;
	if (index < RAM_CONSOLE_LK_SIZE)
	rr_lk->last_func[index] = val;
	}
	}

	void ram_console_addr_size(unsigned long addr, unsigned long size)
	{
	*addr = (unsigned long)ram_console;
	*size = ram_console_size;
	}

	void ram_console_set_dump_step(unsigned int step)
	{
	if (ram_console) {
	ram_console->dump_step = step;
	}
	}

	int ram_console_get_dump_step(void)
	{
	if (ram_console)
	return ram_console->dump_step;
	else {
	LOG("%s. ram_console not ready\n", MOD);
	return 0;
	}
	}