path: root/drivers/misc/mediatek/ram_console/mtk_ram_console.c

#include <linux/slab.h>
#include <linux/aee.h>
#include <linux/atomic.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/proc_fs.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/kthread.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_reserved_mem.h>
#include <linux/pstore.h>
#include <linux/io.h>
#include <mach/wd_api.h>
#include "ram_console.h"
//#include <mt-plat/mt_debug_latch.h>

#define RAM_CONSOLE_HEADER_STR_LEN 1024

static int mtk_cpu_num;

static int ram_console_init_done;

/*
   This group of API call by sub-driver module to report reboot reasons
   aee_rr_* stand for previous reboot reason
 */
struct last_reboot_reason {
	uint32_t fiq_step;
	uint32_t exp_type;	/* 0xaeedeadX: X=1 (HWT), X=2 (KE), X=3 (nested panic) */
	uint32_t reboot_mode;

	uint32_t last_irq_enter[NR_CPUS];
	uint64_t jiffies_last_irq_enter[NR_CPUS];

	uint32_t last_irq_exit[NR_CPUS];
	uint64_t jiffies_last_irq_exit[NR_CPUS];

	uint64_t jiffies_last_sched[NR_CPUS];
	char last_sched_comm[NR_CPUS][TASK_COMM_LEN];

	uint8_t hotplug_data1[NR_CPUS];
	uint8_t hotplug_data2;
	uint64_t hotplug_data3;

	uint32_t mcdi_wfi;
	uint32_t mcdi_r15;
	uint32_t deepidle_data;
	uint32_t sodi3_data;
	uint32_t sodi_data;
	uint32_t spm_suspend_data;
	uint64_t cpu_dormant[NR_CPUS];
	uint32_t clk_data[8];
	uint32_t suspend_debug_flag;

	uint32_t vcore_dvfs_opp;
	uint32_t vcore_dvfs_status;

	uint8_t cpu_dvfs_vproc_big;
	uint8_t cpu_dvfs_vproc_little;
	uint8_t cpu_dvfs_oppidx;
	uint8_t cpu_dvfs_status;

	uint8_t gpu_dvfs_vgpu;
	uint8_t gpu_dvfs_oppidx;
	uint8_t gpu_dvfs_status;

	uint64_t ptp_cpu_big_volt;
	uint64_t ptp_cpu_little_volt;
	uint64_t ptp_gpu_volt;
	uint64_t ptp_temp;
	uint8_t ptp_status;


	uint8_t thermal_temp1;
	uint8_t thermal_temp2;
	uint8_t thermal_temp3;
	uint8_t thermal_temp4;
	uint8_t thermal_temp5;
	uint8_t thermal_status;

	uint8_t isr_el1;

	void *kparams;
};

struct reboot_reason_pl {
	u32 wdt_status;
	u32 data[0];
};

struct reboot_reason_lk {
	u32 data[0];
};

struct ram_console_buffer {
	uint32_t sig;
	/* for size comptible */
	uint32_t off_pl;
	uint32_t off_lpl;	/* last preloader: struct reboot_reason_pl */
	uint32_t sz_pl;
	uint32_t off_lk;
	uint32_t off_llk;	/* last lk: struct reboot_reason_lk */
	uint32_t sz_lk;
	uint32_t padding[3];
	uint32_t sz_buffer;
	uint32_t off_linux;	/* struct last_reboot_reason */
	uint32_t off_console;

	/* console buffer */
	uint32_t log_start;
	uint32_t log_size;
	uint32_t sz_console;
};

#define REBOOT_REASON_SIG (0x43474244)	/* DBRR */
static int FIQ_log_size = sizeof(struct ram_console_buffer);

static struct ram_console_buffer *ram_console_buffer;
static struct ram_console_buffer *ram_console_old;
static struct ram_console_buffer *ram_console_buffer_pa;

static DEFINE_SPINLOCK(ram_console_lock);

static atomic_t rc_in_fiq = ATOMIC_INIT(0);

#ifdef __aarch64__
static void *_memcpy(void *dest, const void *src, size_t count)
{
	char *tmp = dest;
	const char *s = src;

	while (count--)
		*tmp++ = *s++;
	return dest;
}

#define memcpy _memcpy
#endif

#define LAST_RR_SEC_VAL(header, sect, type, item) \
	(header->off_##sect ? ((type *)((void *)header + header->off_##sect))->item : 0)
#define LAST_RRR_BUF_VAL(buf, rr_item) LAST_RR_SEC_VAL(buf, linux, struct last_reboot_reason, rr_item)
#define LAST_RRPL_BUF_VAL(buf, rr_item) LAST_RR_SEC_VAL(buf, pl, struct reboot_reason_pl, rr_item)
#define LAST_RRR_VAL(rr_item)  LAST_RR_SEC_VAL(ram_console_old, linux, struct last_reboot_reason, rr_item)
#define LAST_RRPL_VAL(rr_item) LAST_RR_SEC_VAL(ram_console_old, pl, struct reboot_reason_pl, rr_item)

unsigned int ram_console_size(void)
{
	return ram_console_buffer->sz_console;
}

#ifdef CONFIG_MTK_EMMC_SUPPORT
#ifdef CONFIG_MTK_AEE_IPANIC
#include <linux/mmc/sd_misc.h>

#define EMMC_ADDR 0X700000
static char *ram_console2_log;

void last_kmsg_store_to_emmc(void)
{
	int buff_size;
	struct wd_api *wd_api = NULL;

	get_wd_api(&wd_api);

/* if(num_online_cpus() > 1){ */
	if (wd_api->wd_get_check_bit() > 1) {
		pr_err("ram_console: online cpu %d!\n", wd_api->wd_get_check_bit());
//#ifdef CONFIG_MTPROF
		if (boot_finish == 0)
			return;
//#endif
	}

	/* save log to emmc */
	buff_size = ram_console_buffer->sz_buffer;
	card_dump_func_write((unsigned char *)ram_console_buffer, buff_size, EMMC_ADDR,
			     DUMP_INTO_BOOT_CARD_IPANIC);

	pr_err("ram_console: save kernel log (0x%x) to emmc!\n", buff_size);
}

static int ram_console_lastk_show(struct ram_console_buffer *buffer, struct seq_file *m, void *v);
static int ram_console2_show(struct seq_file *m, void *v)
{
	struct ram_console_buffer *bufp = NULL;

	bufp = (struct ram_console_buffer *)ram_console2_log;
	seq_printf(m, "show last_kmsg2 sig %d, size %d", bufp->sig, bufp->log_size);
	ram_console_lastk_show(bufp, m, v);
	return 0;
}


static int ram_console2_file_open(struct inode *inode, struct file *file)
{
	return single_open(file, ram_console2_show, inode->i_private);
}

static const struct file_operations ram_console2_file_ops = {
	.owner = THIS_MODULE,
	.open = ram_console2_file_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

static int emmc_read_last_kmsg(void *data)
{
	int ret;
	struct file *filp;

	struct proc_dir_entry *entry;
	struct ram_console_buffer *bufp = NULL;
	int timeout = 0;

	ram_console2_log = kzalloc(ram_console_buffer->sz_buffer, GFP_KERNEL);
	if (ram_console2_log == NULL)
		return 1;

	do {
		filp = expdb_open();
		if (timeout++ > 60) {
			pr_err("ram_console: open expdb partition error [%ld]!\n", PTR_ERR(filp));
			return 1;
		}
		msleep(500);
	} while (IS_ERR(filp));
	ret = kernel_read(filp, EMMC_ADDR, ram_console2_log, ram_console_buffer->sz_buffer);
	fput(filp);
	if (IS_ERR(ERR_PTR(ret))) {
		kfree(ram_console2_log);
		ram_console2_log = NULL;
		pr_err("ram_console: read emmc data 2 error!\n");
		return 1;
	}

	bufp = (struct ram_console_buffer *)ram_console2_log;
	if (bufp->sig != REBOOT_REASON_SIG) {
		kfree(ram_console2_log);
		ram_console2_log = NULL;
		pr_err("ram_console: emmc read data sig is not match!\n");
		return 1;
	}

	entry = proc_create("last_kmsg2", 0444, NULL, &ram_console2_file_ops);
	if (!entry) {
		pr_err("ram_console: failed to create proc entry\n");
		kfree(ram_console2_log);
		ram_console2_log = NULL;
		return 1;
	}
	pr_err("ram_console: create last_kmsg2 ok.\n");
	return 0;

}
#else
void last_kmsg_store_to_emmc(void)
{
}
#endif
#endif

#ifdef CONFIG_PSTORE
void sram_log_save(const char *msg, int count)
{
	pstore_bconsole_write(NULL, msg, count);
}

void pstore_console_show(enum pstore_type_id type_id, struct seq_file *m, void *v)
{
	struct pstore_info *psi = psinfo;
	char *buf = NULL;
	ssize_t size;
	u64 id;
	int count;
	enum pstore_type_id type;
	struct timespec time;
	bool compressed;

	if (!psi)
		return;
	mutex_lock(&psi->read_mutex);
	if (psi->open && psi->open(psi))
		goto out;

	while ((size = psi->read(&id, &type, &count, &time, &buf, &compressed, psi)) > 0) {
		/*pr_err("ram_console: id %lld, type %d, count %d, size %zx\n", id, type, count,
		       size);*/
		if (type == type_id)
			seq_write(m, buf, size);
		kfree(buf);
		buf = NULL;
	}

	if (psi->close)
		psi->close(psi);
out:
	mutex_unlock(&psi->read_mutex);
}
#else
void sram_log_save(const char *msg, int count)
{
	struct ram_console_buffer *buffer;
	char *rc_console;
	int rem;
	unsigned int ram_console_buffer_size = ram_console_size();

	if (ram_console_buffer == NULL) {
		pr_err("ram console buffer is NULL!\n");
		return;
	}

	buffer = ram_console_buffer;
	rc_console = (char *)ram_console_buffer + ram_console_buffer->off_console;

	/* count >= buffer_size, full the buffer */
	if (count >= ram_console_buffer_size) {
		memcpy(rc_console, msg + (count - ram_console_buffer_size),
		       ram_console_buffer_size);
		buffer->log_start = 0;
		buffer->log_size = ram_console_buffer_size;
	} else if (count > (ram_console_buffer_size - buffer->log_start)) {
		/* count > last buffer, full them and fill the head buffer */
		rem = ram_console_buffer_size - buffer->log_start;
		memcpy(rc_console + buffer->log_start, msg, rem);
		memcpy(rc_console, msg + rem, count - rem);
		buffer->log_start = count - rem;
		buffer->log_size = ram_console_buffer_size;
	} else {
		/* count <=  last buffer, fill in free buffer */
		memcpy(rc_console + buffer->log_start, msg, count);	/* count <= last buffer, fill them */
		buffer->log_start += count;
		buffer->log_size += count;
		if (buffer->log_start >= ram_console_buffer_size)
			buffer->log_start = 0;
		if (buffer->log_size > ram_console_buffer_size)
			buffer->log_size = ram_console_buffer_size;
	}

}
#endif

#ifdef __aarch64__
#define FORMAT_LONG "%016lx "
#else
#define FORMAT_LONG "%08lx "
#endif
void aee_sram_fiq_save_bin(const char *msg, size_t len)
{
	int i;
	char buf[20];

	for (i = 0; i < len;) {
		snprintf(buf, sizeof(long) * 2 + 2, FORMAT_LONG, *(long *)(msg + i));
		sram_log_save(buf, sizeof(long) * 2 + 1);
		i += sizeof(long);
		if (i % 32 == 0)
			sram_log_save("\n", 1);
	}
}

void aee_disable_ram_console_write(void)
{
	atomic_set(&rc_in_fiq, 1);
}

void aee_sram_fiq_log(const char *msg)
{
	unsigned int count = strlen(msg);
	int delay = 100;
	unsigned int ram_console_buffer_size = ram_console_size();

	if (FIQ_log_size + count > ram_console_buffer_size)
		return;

	atomic_set(&rc_in_fiq, 1);

	while ((delay > 0) && (spin_is_locked(&ram_console_lock))) {
		udelay(1);
		delay--;
	}

	sram_log_save(msg, count);
	FIQ_log_size += count;
}

void ram_console_write(struct console *console, const char *s, unsigned int count)
{
	unsigned long flags;

	if (atomic_read(&rc_in_fiq))
		return;

	spin_lock_irqsave(&ram_console_lock, flags);

	sram_log_save(s, count);

	spin_unlock_irqrestore(&ram_console_lock, flags);
}

static struct console ram_console = {
	.name = "ram",
	.write = ram_console_write,
	.flags = CON_PRINTBUFFER | CON_ENABLED | CON_ANYTIME,
	.index = -1,
};

void ram_console_enable_console(int enabled)
{
	if (enabled)
		ram_console.flags |= CON_ENABLED;
	else
		ram_console.flags &= ~CON_ENABLED;
}

static int ram_console_check_header(struct ram_console_buffer *buffer)
{
	/*int i; */
	if (!buffer || (buffer->sz_buffer != ram_console_buffer->sz_buffer)
	    || buffer->off_pl > buffer->sz_buffer || buffer->off_lk > buffer->sz_buffer
	    || buffer->off_linux > buffer->sz_buffer || buffer->off_console > buffer->sz_buffer) {
		pr_err("ram_console: ilegal header.");
		/*
		   for (i = 0; i < 16; i++)
		   pr_debug("0x%x ", ((int*)buffer)[i]);
		   pr_debug("\n");
		 */
		return -1;
	} else
		return 0;
}

static int ram_console_lastk_show(struct ram_console_buffer *buffer, struct seq_file *m, void *v)
{
	unsigned int wdt_status;

	if (ram_console_check_header(buffer) && buffer->sz_buffer != 0) {
		pr_err("ram_console: buffer %p, size %x(%x)\n", buffer, buffer->sz_buffer,
		       ram_console_buffer->sz_buffer);
		if (buffer)
			seq_write(m, buffer, ram_console_buffer->sz_buffer);
		else
			seq_puts(m, "NO VALID DATA.\n");
		return 0;
	}
	if (buffer->off_pl == 0 || buffer->off_pl + ALIGN(buffer->sz_pl, 64) != buffer->off_lpl) {
		/* workaround for compatiblity to old preloader & lk (OTA) */
		wdt_status = *((unsigned char *)buffer + 12);
	} else
		wdt_status = LAST_RRPL_BUF_VAL(buffer, wdt_status);

	seq_printf(m, "ram console header, hw_status: %u, fiq step %u.\n",
		   wdt_status, LAST_RRR_BUF_VAL(buffer, fiq_step));

#ifdef CONFIG_PSTORE_CONSOLE
	/*pr_err("ram_console: pstore show start\n");*/
	pstore_console_show(PSTORE_TYPE_CONSOLE, m, v);
	/*pr_err("ram_console: pstore show end\n");*/
#else
	if (buffer->off_console != 0
	    && buffer->off_linux + ALIGN(sizeof(struct last_reboot_reason),
					 64) == buffer->off_console
	    && buffer->sz_console == buffer->sz_buffer - buffer->off_console
	    && buffer->log_size <= buffer->sz_console && buffer->log_start <= buffer->sz_console) {
		seq_write(m, (void *)buffer + buffer->off_console + buffer->log_start,
			  buffer->log_size - buffer->log_start);
		seq_write(m, (void *)buffer + buffer->off_console, buffer->log_start);
	} else {
		seq_puts(m, "header may be corrupted, dump the raw buffer for reference only\n");
		seq_write(m, buffer, ram_console_buffer->sz_buffer);
	}
#endif
	return 0;
}

static int __init ram_console_save_old(struct ram_console_buffer *buffer, size_t buffer_size)
{
	ram_console_old = kmalloc(buffer_size, GFP_KERNEL);
	if (ram_console_old == NULL) {
		pr_err("ram_console: failed to allocate old buffer\n");
		return -1;
	}
	memcpy(ram_console_old, buffer, buffer_size);
	return 0;
}

static int __init ram_console_init(struct ram_console_buffer *buffer, size_t buffer_size)
{
	ram_console_buffer = buffer;

	if (buffer->sig != REBOOT_REASON_SIG) {
		memset_io((void *)buffer, 0, buffer_size);
		buffer->sig = REBOOT_REASON_SIG;
	}
	ram_console_save_old(buffer, buffer_size);
	if (buffer->sz_lk != 0 && buffer->off_lk + ALIGN(buffer->sz_lk, 64) == buffer->off_llk)
		buffer->off_linux = buffer->off_llk + ALIGN(buffer->sz_lk, 64);
	else
		buffer->off_linux = 512;	/* OTA:leave enough space for pl/lk */
	buffer->sz_buffer = buffer_size;
	buffer->off_console = buffer->off_linux + ALIGN(sizeof(struct last_reboot_reason), 64);
	buffer->sz_console = buffer->sz_buffer - buffer->off_console;
	buffer->log_start = 0;
	buffer->log_size = 0;
	memset_io((void *)buffer + buffer->off_linux, 0, buffer_size - buffer->off_linux);
#ifndef CONFIG_PSTORE
	register_console(&ram_console);
#endif
	ram_console_init_done = 1;
	return 0;
}

#if defined(CONFIG_MTK_RAM_CONSOLE_USING_DRAM)
static void *remap_lowmem(phys_addr_t start, phys_addr_t size)
{
	struct page **pages;
	phys_addr_t page_start;
	unsigned int page_count;
	pgprot_t prot;
	unsigned int i;
	void *vaddr;

	page_start = start - offset_in_page(start);
	page_count = DIV_ROUND_UP(size + offset_in_page(start), PAGE_SIZE);

	prot = pgprot_noncached(PAGE_KERNEL);

	pages = kmalloc_array(page_count, sizeof(struct page *), GFP_KERNEL);
	if (!pages)
		return NULL;

	for (i = 0; i < page_count; i++) {
		phys_addr_t addr = page_start + i * PAGE_SIZE;

		pages[i] = pfn_to_page(addr >> PAGE_SHIFT);
	}
	vaddr = vmap(pages, page_count, VM_MAP, prot);
	kfree(pages);
	if (!vaddr) {
		pr_err("%s: Failed to map %u pages\n", __func__, page_count);
		return NULL;
	}

	return vaddr + offset_in_page(start);
}
#endif

struct mem_desc_t {
	unsigned long start;
	unsigned long size;
};

#if defined(CONFIG_MTK_RAM_CONSOLE_USING_SRAM)
#ifdef CONFIG_OF
static int __init dt_get_ram_console(unsigned long node, const char *uname, int depth, void *data)
{
	struct mem_desc_t *sram;

	if (depth != 1 || (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
		return 0;

	sram = (struct mem_desc_t *) of_get_flat_dt_prop(node, "non_secure_sram", NULL);
	if (sram) {
		pr_notice("ram_console:[DT] 0x%lx@0x%lx\n", sram->size, sram->start);
		*(struct mem_desc_t *) data = *sram;
	}

	return 1;
}
#endif
#endif

static int __init ram_console_early_init(void)
{
	struct ram_console_buffer *bufp = NULL;
	size_t buffer_size = 0;
#if defined(CONFIG_MTK_RAM_CONSOLE_USING_SRAM)
#ifdef CONFIG_OF
	struct mem_desc_t sram = { 0 };

	if (of_scan_flat_dt(dt_get_ram_console, &sram)) {
		if (sram.start == 0) {
			sram.start = CONFIG_MTK_RAM_CONSOLE_ADDR;
			sram.size = CONFIG_MTK_RAM_CONSOLE_SIZE;
		}
		bufp = ioremap(sram.start, sram.size);
		ram_console_buffer_pa = (struct ram_console_buffer *)sram.start;
		if (bufp)
			buffer_size = sram.size;
		else {
			pr_err("ram_console: ioremap failed, [0x%lx, 0x%lx]\n", sram.start,
			       sram.size);
			return 0;
		}
	} else {
		return 0;
	}
#else
	bufp = ioremap(CONFIG_MTK_RAM_CONSOLE_ADDR, CONFIG_MTK_RAM_CONSOLE_SIZE);
	if (bufp)
		buffer_size = CONFIG_MTK_RAM_CONSOLE_SIZE;
		ram_console_buffer_pa = CONFIG_MTK_RAM_CONSOLE_ADDR;
	else {
		pr_err("ram_console: ioremap failed, [0x%x, 0x%x]\n", sram.start, sram.size);
		return 0;
	}
#endif
#elif defined(CONFIG_MTK_RAM_CONSOLE_USING_DRAM)
	bufp = remap_lowmem(CONFIG_MTK_RAM_CONSOLE_DRAM_ADDR, CONFIG_MTK_RAM_CONSOLE_DRAM_SIZE);
	ram_console_buffer_pa = (struct ram_console_buffer *)CONFIG_MTK_RAM_CONSOLE_DRAM_ADDR;
	if (bufp == NULL) {
		pr_err("ram_console: ioremap failed\n");
		return 0;
	}
	buffer_size = CONFIG_MTK_RAM_CONSOLE_DRAM_SIZE;
#else
	return 0;
#endif

	pr_err("ram_console: buffer start: 0x%p, size: 0x%zx\n", bufp, buffer_size);
	mtk_cpu_num = num_present_cpus();
	return ram_console_init(bufp, buffer_size);
}

static int ram_console_show(struct seq_file *m, void *v)
{
	ram_console_lastk_show(ram_console_old, m, v);
	return 0;
}

static int ram_console_file_open(struct inode *inode, struct file *file)
{
	return single_open(file, ram_console_show, inode->i_private);
}

static const struct file_operations ram_console_file_ops = {
	.owner = THIS_MODULE,
	.open = ram_console_file_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

static int __init ram_console_late_init(void)
{
	struct proc_dir_entry *entry;

#ifdef CONFIG_MTK_EMMC_SUPPORT
#ifdef CONFIG_MTK_AEE_IPANIC
	int err;
	static struct task_struct *thread;

	thread = kthread_run(emmc_read_last_kmsg, 0, "read_poweroff_log");
	if (IS_ERR(thread)) {
		err = PTR_ERR(thread);
		pr_err("ram_console: failed to create kernel thread: %d\n", err);
	}
#endif
#endif
	entry = proc_create("last_kmsg", 0444, NULL, &ram_console_file_ops);
	if (!entry) {
		pr_err("ram_console: failed to create proc entry\n");
		kfree(ram_console_old);
		ram_console_old = NULL;
		return 0;
	}
	return 0;
}

console_initcall(ram_console_early_init);
late_initcall(ram_console_late_init);

int ram_console_pstore_reserve_memory(struct reserved_mem *rmem)
{
	pr_alert("[memblock]%s: 0x%llx - 0x%llx (0x%llx)\n", "pstore-reserve-memory",
		 (unsigned long long)rmem->base,
		 (unsigned long long)rmem->base + (unsigned long long)rmem->size,
		 (unsigned long long)rmem->size);
	return 0;
}

int ram_console_binary_reserve_memory(struct reserved_mem *rmem)
{
	pr_alert("[memblock]%s: 0x%llx - 0x%llx (0x%llx)\n", "ram_console-reserve-memory",
		 (unsigned long long)rmem->base,
		 (unsigned long long)rmem->base + (unsigned long long)rmem->size,
		 (unsigned long long)rmem->size);
	return 0;
}

RESERVEDMEM_OF_DECLARE(reserve_memory_pstore, "pstore-reserve-memory",
		       ram_console_pstore_reserve_memory);
RESERVEDMEM_OF_DECLARE(reserve_memory_ram_console, "mediatek,ram_console",
		       ram_console_binary_reserve_memory);

/* aee sram flags save */
#define RR_BASE(stage) ((void *)ram_console_buffer + ram_console_buffer->off_##stage)
#define RR_LINUX ((struct last_reboot_reason *)RR_BASE(linux))
#define RR_BASE_PA(stage) ((void *)ram_console_buffer_pa + ram_console_buffer->off_##stage)
#define RR_LINUX_PA ((struct last_reboot_reason *)RR_BASE_PA(linux))

/*NOTICE: You should check if ram_console is null before call these macros*/
#define LAST_RR_SET(rr_item, value) (RR_LINUX->rr_item = value)

#define LAST_RR_SET_WITH_ID(rr_item, id, value) (RR_LINUX->rr_item[id] = value)

#define LAST_RR_VAL(rr_item)				\
	(ram_console_buffer ? RR_LINUX->rr_item : 0)

#define LAST_RR_MEMCPY(rr_item, str, len)				\
	(strlcpy(RR_LINUX->rr_item, str, len))

#define LAST_RR_MEMCPY_WITH_ID(rr_item, id, str, len)			\
	(strlcpy(RR_LINUX->rr_item[id], str, len))

void aee_rr_rec_reboot_mode(u8 mode)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(reboot_mode, mode);
}

void aee_rr_rec_kdump_params(void *params)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(kparams, params);
}

void aee_rr_rec_fiq_step(u8 step)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(fiq_step, step);
}

int aee_rr_curr_fiq_step(void)
{
	return LAST_RR_VAL(fiq_step);
}

void aee_rr_rec_exp_type(unsigned int type)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	if (LAST_RR_VAL(exp_type) == 0 && type < 16)
		LAST_RR_SET(exp_type, 0xaeedead0 | type);
}

unsigned int aee_rr_curr_exp_type(void)
{
	unsigned int exp_type = LAST_RR_VAL(exp_type);

	return (exp_type ^ 0xaeedead0) < 16 ? exp_type ^ 0xaeedead0 : exp_type;
}

/* composite api */
void aee_rr_rec_last_irq_enter(int cpu, int irq, u64 jiffies)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	if (cpu >= 0 && cpu < num_possible_cpus()) {
		LAST_RR_SET_WITH_ID(last_irq_enter, cpu, irq);
		LAST_RR_SET_WITH_ID(jiffies_last_irq_enter, cpu, jiffies);
	}
	mb();			/*TODO:need add comments */
}

void aee_rr_rec_last_irq_exit(int cpu, int irq, u64 jiffies)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	if (cpu >= 0 && cpu < num_possible_cpus()) {
		LAST_RR_SET_WITH_ID(last_irq_exit, cpu, irq);
		LAST_RR_SET_WITH_ID(jiffies_last_irq_exit, cpu, jiffies);
	}
	mb();			/*TODO:need add comments */
}

void aee_rr_rec_last_sched_jiffies(int cpu, u64 jiffies, const char *comm)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	if (cpu >= 0 && cpu < num_possible_cpus()) {
		LAST_RR_SET_WITH_ID(jiffies_last_sched, cpu, jiffies);
		LAST_RR_MEMCPY_WITH_ID(last_sched_comm, cpu, comm, TASK_COMM_LEN);
	}
	mb();			/*TODO:need add comments */
}

void aee_rr_rec_hoplug(int cpu, u8 data1, u8 data2)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	if (cpu >= 0 && cpu < num_possible_cpus()) {
		LAST_RR_SET_WITH_ID(hotplug_data1, cpu, data1);
		if (cpu == 0)
			LAST_RR_SET(hotplug_data2, data2);
	}
}

void aee_rr_rec_hotplug(int cpu, u8 data1, u8 data2, unsigned long data3)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	if (cpu >= 0 && cpu < num_possible_cpus()) {
		LAST_RR_SET_WITH_ID(hotplug_data1, cpu, data1);
		if (cpu == 0) {
			LAST_RR_SET(hotplug_data2, data2);
			LAST_RR_SET(hotplug_data3, (uint64_t) data3);
		}
	}
}

void aee_rr_rec_clk(int id, u32 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET_WITH_ID(clk_data, id, val);
}

void aee_rr_rec_deepidle_val(u32 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(deepidle_data, val);
}

u32 aee_rr_curr_deepidle_val(void)
{
	return LAST_RR_VAL(deepidle_data);
}

void aee_rr_rec_mcdi_wfi_val(u32 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(mcdi_wfi, val);
}

u32 aee_rr_curr_mcdi_wfi_val(void)
{
	return LAST_RR_VAL(mcdi_wfi);
}

void aee_rr_rec_mcdi_r15_val(u32 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(mcdi_r15, val);
}

void aee_rr_rec_sodi_val(u32 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(sodi_data, val);
}

void aee_rr_rec_sodi3_val(u32 val)
{
	if (!ram_console_init_done)
		return;
	LAST_RR_SET(sodi3_data, val);
}

u32 aee_rr_curr_sodi3_val(void)
{
	if (!ram_console_init_done)
		return 0;
	return LAST_RR_VAL(sodi3_data);
}

u32 aee_rr_curr_sodi_val(void)
{
	return LAST_RR_VAL(sodi_data);
}

void aee_rr_rec_spm_suspend_val(u32 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(spm_suspend_data, val);
}

u32 aee_rr_curr_spm_suspend_val(void)
{
	return LAST_RR_VAL(spm_suspend_data);
}

/* special case without MMU, return addr directly, strongly suggest not to use */
unsigned int *aee_rr_rec_mcdi_wfi(void)
{
#if 0
	if (ram_console_buffer)
		return &RR_LINUX->mcdi_wfi;
	else
		return NULL;
#endif
	return NULL;
}

unsigned long *aee_rr_rec_cpu_dormant(void)
{
	if (ram_console_buffer)
		return (unsigned long *)&RR_LINUX->cpu_dormant;
	else
		return NULL;
}

unsigned long *aee_rr_rec_cpu_dormant_pa(void)
{
	if (ram_console_buffer_pa)
		return (unsigned long *)&RR_LINUX_PA->cpu_dormant;
	else
		return NULL;
}

void aee_rr_rec_vcore_dvfs_opp(u32 val)
{
	if (!ram_console_init_done)
		return;
	LAST_RR_SET(vcore_dvfs_opp, val);
}

u32 aee_rr_curr_vcore_dvfs_opp(void)
{
	return LAST_RR_VAL(vcore_dvfs_opp);
}

void aee_rr_rec_vcore_dvfs_status(u32 val)
{
	if (!ram_console_init_done)
		return;
	LAST_RR_SET(vcore_dvfs_status, val);
}

u32 aee_rr_curr_vcore_dvfs_status(void)
{
	return LAST_RR_VAL(vcore_dvfs_status);
}

void aee_rr_rec_cpu_dvfs_vproc_big(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(cpu_dvfs_vproc_big, val);
}

void aee_rr_rec_cpu_dvfs_vproc_little(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(cpu_dvfs_vproc_little, val);
}

void aee_rr_rec_cpu_dvfs_oppidx(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(cpu_dvfs_oppidx, val);
}

u8 aee_rr_curr_cpu_dvfs_oppidx(void)
{
	return LAST_RR_VAL(cpu_dvfs_oppidx);
}

void aee_rr_rec_cpu_dvfs_status(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(cpu_dvfs_status, val);
}

u8 aee_rr_curr_cpu_dvfs_status(void)
{
	return LAST_RR_VAL(cpu_dvfs_status);
}

void aee_rr_rec_gpu_dvfs_vgpu(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(gpu_dvfs_vgpu, val);
}

void aee_rr_rec_gpu_dvfs_oppidx(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(gpu_dvfs_oppidx, val);
}

void aee_rr_rec_gpu_dvfs_status(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(gpu_dvfs_status, val);
}

u8 aee_rr_curr_gpu_dvfs_status(void)
{
	return LAST_RR_VAL(gpu_dvfs_status);
}

void aee_rr_rec_ptp_cpu_big_volt(u64 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(ptp_cpu_big_volt, val);
}

void aee_rr_rec_ptp_cpu_little_volt(u64 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(ptp_cpu_little_volt, val);
}

void aee_rr_rec_ptp_gpu_volt(u64 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(ptp_gpu_volt, val);
}

void aee_rr_rec_ptp_temp(u64 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(ptp_temp, val);
}

void aee_rr_rec_ptp_status(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(ptp_status, val);
}

void aee_rr_rec_thermal_temp1(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(thermal_temp1, val);
}

void aee_rr_rec_thermal_temp2(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(thermal_temp2, val);
}

void aee_rr_rec_thermal_temp3(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(thermal_temp3, val);
}

void aee_rr_rec_thermal_temp4(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(thermal_temp4, val);
}

void aee_rr_rec_thermal_temp5(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(thermal_temp5, val);
}

void aee_rr_rec_thermal_status(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(thermal_status, val);
}

void aee_rr_rec_isr_el1(u8 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(isr_el1, val);
}

u64 aee_rr_curr_ptp_cpu_big_volt(void)
{
	return LAST_RR_VAL(ptp_cpu_big_volt);
}

u64 aee_rr_curr_ptp_cpu_little_volt(void)
{
	return LAST_RR_VAL(ptp_cpu_little_volt);
}

u64 aee_rr_curr_ptp_gpu_volt(void)
{
	return LAST_RR_VAL(ptp_gpu_volt);
}

u64 aee_rr_curr_ptp_temp(void)
{
	return LAST_RR_VAL(ptp_temp);
}

u8 aee_rr_curr_ptp_status(void)
{
	return LAST_RR_VAL(ptp_status);
}

u8 aee_rr_curr_thermal_temp1(void)
{
	return LAST_RR_VAL(thermal_temp1);
}

u8 aee_rr_curr_thermal_temp2(void)
{
	return LAST_RR_VAL(thermal_temp2);
}

u8 aee_rr_curr_thermal_temp3(void)
{
	return LAST_RR_VAL(thermal_temp3);
}

u8 aee_rr_curr_thermal_temp4(void)
{
	return LAST_RR_VAL(thermal_temp4);
}

u8 aee_rr_curr_thermal_temp5(void)
{
	return LAST_RR_VAL(thermal_temp5);
}

u8 aee_rr_curr_thermal_status(void)
{
	return LAST_RR_VAL(thermal_status);
}

u8 aee_rr_curr_isr_el1(void)
{
	return LAST_RR_VAL(isr_el1);
}

void aee_rr_rec_suspend_debug_flag(u32 val)
{
	if (!ram_console_init_done || !ram_console_buffer)
		return;
	LAST_RR_SET(suspend_debug_flag, val);
}

/* aee sram flags print */
int aee_rr_last_fiq_step(void)
{
	return LAST_RRR_VAL(fiq_step);
}

typedef void (*last_rr_show_t) (struct seq_file *m);
typedef void (*last_rr_show_cpu_t) (struct seq_file *m, int cpu);

void aee_rr_show_wdt_status(struct seq_file *m)
{
	unsigned int wdt_status;
	struct ram_console_buffer *buffer = ram_console_old;

	if (buffer->off_pl == 0 || buffer->off_pl + ALIGN(buffer->sz_pl, 64) != buffer->off_lpl) {
		/* workaround for compatiblity to old preloader & lk (OTA) */
		wdt_status = *((unsigned char *)buffer + 12);
	} else
		wdt_status = LAST_RRPL_VAL(wdt_status);
	seq_printf(m, "WDT status: %d", wdt_status);
}

void aee_rr_show_fiq_step(struct seq_file *m)
{
	seq_printf(m, " fiq step: %u ", LAST_RRR_VAL(fiq_step));
}

void aee_rr_show_exp_type(struct seq_file *m)
{
	unsigned int exp_type = LAST_RRR_VAL(exp_type);

	seq_printf(m, " exception type: %u\n",
		   (exp_type ^ 0xaeedead0) < 16 ? exp_type ^ 0xaeedead0 : exp_type);
}

void aee_rr_show_last_irq_enter(struct seq_file *m, int cpu)
{
	seq_printf(m, "  irq: enter(%d, ", LAST_RRR_VAL(last_irq_enter[cpu]));
}

void aee_rr_show_jiffies_last_irq_enter(struct seq_file *m, int cpu)
{
	seq_printf(m, "%llu) ", LAST_RRR_VAL(jiffies_last_irq_enter[cpu]));
}

void aee_rr_show_last_irq_exit(struct seq_file *m, int cpu)
{
	seq_printf(m, "quit(%d, ", LAST_RRR_VAL(last_irq_exit[cpu]));
}

void aee_rr_show_jiffies_last_irq_exit(struct seq_file *m, int cpu)
{
	seq_printf(m, "%llu)\n", LAST_RRR_VAL(jiffies_last_irq_exit[cpu]));
}

void aee_rr_show_hotplug_data1(struct seq_file *m, int cpu)
{
	seq_printf(m, "  hotplug: %d, ", LAST_RRR_VAL(hotplug_data1[cpu]));
}

void aee_rr_show_hotplug_data2(struct seq_file *m, int cpu)
{
	if (cpu == 0)
		seq_printf(m, "%d, ", LAST_RRR_VAL(hotplug_data2));
}

void aee_rr_show_hotplug_data3(struct seq_file *m, int cpu)
{
	if (cpu == 0)
		seq_printf(m, "0x%llx", LAST_RRR_VAL(hotplug_data3));
	seq_puts(m, "\n");
}

void aee_rr_show_mcdi(struct seq_file *m)
{
	seq_printf(m, "mcdi_wfi: 0x%x\n", LAST_RRR_VAL(mcdi_wfi));
}

void aee_rr_show_mcdi_r15(struct seq_file *m)
{
	seq_printf(m, "mcdi_r15: 0x%x\n", LAST_RRR_VAL(mcdi_r15));
}

void aee_rr_show_deepidle(struct seq_file *m)
{
	seq_printf(m, "deepidle: 0x%x\n", LAST_RRR_VAL(deepidle_data));
}

void aee_rr_show_sodi3(struct seq_file *m)
{
	seq_printf(m, "sodi3: 0x%x\n", LAST_RRR_VAL(sodi3_data));
}

void aee_rr_show_sodi(struct seq_file *m)
{
	seq_printf(m, "sodi: 0x%x\n", LAST_RRR_VAL(sodi_data));
}

void aee_rr_show_spm_suspend(struct seq_file *m)
{
	seq_printf(m, "spm_suspend: 0x%x\n", LAST_RRR_VAL(spm_suspend_data));
}

void aee_rr_show_cpu_dormant(struct seq_file *m, int cpu)
{
	seq_printf(m, "  cpu_dormant: 0x%llx\n", LAST_RRR_VAL(cpu_dormant[cpu]));
}

void aee_rr_show_clk(struct seq_file *m)
{
	int i = 0;

	for (i = 0; i < 8; i++)
		seq_printf(m, "clk_data: 0x%x\n", LAST_RRR_VAL(clk_data[i]));
}

void aee_rr_show_vcore_dvfs_opp(struct seq_file *m)
{
	seq_printf(m, "vcore_dvfs_opp: 0x%x\n", LAST_RRR_VAL(vcore_dvfs_opp));
}

void aee_rr_show_vcore_dvfs_status(struct seq_file *m)
{
	seq_printf(m, "vcore_dvfs_status: 0x%x\n", LAST_RRR_VAL(vcore_dvfs_status));
}

void aee_rr_show_cpu_dvfs_vproc_big(struct seq_file *m)
{
	seq_printf(m, "cpu_dvfs_vproc_big: 0x%x\n", LAST_RRR_VAL(cpu_dvfs_vproc_big));
}

void aee_rr_show_cpu_dvfs_vproc_little(struct seq_file *m)
{
	seq_printf(m, "cpu_dvfs_vproc_little: 0x%x\n", LAST_RRR_VAL(cpu_dvfs_vproc_little));
}

void aee_rr_show_cpu_dvfs_oppidx(struct seq_file *m)
{
	seq_printf(m, "cpu_dvfs_oppidx: little = 0x%x\n", LAST_RRR_VAL(cpu_dvfs_oppidx) & 0xF);
	seq_printf(m, "cpu_dvfs_oppidx: big = 0x%x\n", (LAST_RRR_VAL(cpu_dvfs_oppidx) >> 4) & 0xF);
}

void aee_rr_show_cpu_dvfs_status(struct seq_file *m)
{
	seq_printf(m, "cpu_dvfs_status: 0x%x\n", LAST_RRR_VAL(cpu_dvfs_status));
}

void aee_rr_show_gpu_dvfs_vgpu(struct seq_file *m)
{
	seq_printf(m, "gpu_dvfs_vgpu: 0x%x\n", LAST_RRR_VAL(gpu_dvfs_vgpu));
}

void aee_rr_show_gpu_dvfs_oppidx(struct seq_file *m)
{
	seq_printf(m, "gpu_dvfs_oppidx: 0x%x\n", LAST_RRR_VAL(gpu_dvfs_oppidx));
}

void aee_rr_show_gpu_dvfs_status(struct seq_file *m)
{
	seq_printf(m, "gpu_dvfs_status: 0x%x\n", LAST_RRR_VAL(gpu_dvfs_status));
}

void aee_rr_show_ptp_cpu_big_volt(struct seq_file *m)
{
	int i;

	for (i = 0; i < 8; i++)
		seq_printf(m, "ptp_cpu_big_volt[%d] = %llx\n", i,
			   (LAST_RRR_VAL(ptp_cpu_big_volt) >> (i * 8)) & 0xFF);
}

void aee_rr_show_ptp_cpu_little_volt(struct seq_file *m)
{
	int i;

	for (i = 0; i < 8; i++)
		seq_printf(m, "ptp_cpu_little_volt[%d] = %llx\n", i,
			   (LAST_RRR_VAL(ptp_cpu_little_volt) >> (i * 8)) & 0xFF);
}

void aee_rr_show_ptp_gpu_volt(struct seq_file *m)
{
	int i;

	for (i = 0; i < 8; i++)
		seq_printf(m, "ptp_gpu_volt[%d] = %llx\n", i,
			   (LAST_RRR_VAL(ptp_gpu_volt) >> (i * 8)) & 0xFF);
}

void aee_rr_show_ptp_temp(struct seq_file *m)
{
	seq_printf(m, "ptp_temp: little = %llx\n", LAST_RRR_VAL(ptp_temp) & 0xFF);
	seq_printf(m, "ptp_temp: big = %llx\n", (LAST_RRR_VAL(ptp_temp) >> 8) & 0xFF);
	seq_printf(m, "ptp_temp: GPU = %llx\n", (LAST_RRR_VAL(ptp_temp) >> 16) & 0xFF);
}

void aee_rr_show_thermal_temp(struct seq_file *m)
{
	seq_printf(m, "thermal_temp1 = %d\n", LAST_RRR_VAL(thermal_temp1));
	seq_printf(m, "thermal_temp2 = %d\n", LAST_RRR_VAL(thermal_temp2));
	seq_printf(m, "thermal_temp3 = %d\n", LAST_RRR_VAL(thermal_temp3));
	seq_printf(m, "thermal_temp4 = %d\n", LAST_RRR_VAL(thermal_temp4));
	seq_printf(m, "thermal_temp5 = %d\n", LAST_RRR_VAL(thermal_temp5));
}

void aee_rr_show_ptp_status(struct seq_file *m)
{
	seq_printf(m, "ptp_status: 0x%x\n", LAST_RRR_VAL(ptp_status));
}

void aee_rr_show_thermal_status(struct seq_file *m)
{
	seq_printf(m, "thermal_status: %d\n", LAST_RRR_VAL(thermal_status));
}

void aee_rr_show_isr_el1(struct seq_file *m)
{
	seq_printf(m, "isr_el1: %d\n", LAST_RRR_VAL(isr_el1));
}

__weak uint32_t get_suspend_debug_flag(void)
{
	return LAST_RR_VAL(suspend_debug_flag);
}

void aee_rr_show_suspend_debug_flag(struct seq_file *m)
{
	uint32_t flag = get_suspend_debug_flag();

	seq_printf(m, "SPM Suspend debug = 0x%x\n", flag);
}

int __weak mt_reg_dump(char *buf)
{
	return 1;
}

void aee_rr_show_last_pc(struct seq_file *m)
{
	char *reg_buf = kmalloc(4096, GFP_KERNEL);

	if (reg_buf) {
		if (mt_reg_dump(reg_buf) == 0)
			seq_printf(m, "%s\n", reg_buf);
		kfree(reg_buf);
	}
}

int __weak mt_lastbus_dump(char *buf)
{
	return 1;
}

void aee_rr_show_last_bus(struct seq_file *m)
{
	char *reg_buf = kmalloc(4096, GFP_KERNEL);

	if (reg_buf) {
		if (mt_lastbus_dump) {
			mt_lastbus_dump(reg_buf);
			seq_printf(m, "%s\n", reg_buf);
		}
		kfree(reg_buf);
	}
}


last_rr_show_t aee_rr_show[] = {
	aee_rr_show_wdt_status,
	aee_rr_show_fiq_step,
	aee_rr_show_exp_type,
	aee_rr_show_last_pc,
	aee_rr_show_last_bus,
	aee_rr_show_mcdi,
	aee_rr_show_mcdi_r15,
	aee_rr_show_suspend_debug_flag,
	aee_rr_show_deepidle,
	aee_rr_show_sodi3,
	aee_rr_show_sodi,
	aee_rr_show_spm_suspend,
	aee_rr_show_vcore_dvfs_opp,
	aee_rr_show_vcore_dvfs_status,
	aee_rr_show_clk,
	aee_rr_show_cpu_dvfs_vproc_big,
	aee_rr_show_cpu_dvfs_vproc_little,
	aee_rr_show_cpu_dvfs_oppidx,
	aee_rr_show_cpu_dvfs_status,
	aee_rr_show_gpu_dvfs_vgpu,
	aee_rr_show_gpu_dvfs_oppidx,
	aee_rr_show_gpu_dvfs_status,
	aee_rr_show_ptp_cpu_big_volt,
	aee_rr_show_ptp_cpu_little_volt,
	aee_rr_show_ptp_gpu_volt,
	aee_rr_show_ptp_temp,
	aee_rr_show_ptp_status,
	aee_rr_show_thermal_temp,
	aee_rr_show_thermal_status,
	aee_rr_show_isr_el1
};

last_rr_show_cpu_t aee_rr_show_cpu[] = {
	aee_rr_show_last_irq_enter,
	aee_rr_show_jiffies_last_irq_enter,
	aee_rr_show_last_irq_exit,
	aee_rr_show_jiffies_last_irq_exit,
	aee_rr_show_hotplug_data1,
	aee_rr_show_hotplug_data2,
	aee_rr_show_hotplug_data3,
	aee_rr_show_cpu_dormant,
};

last_rr_show_t aee_rr_last_xxx[] = {
	aee_rr_show_last_pc,
	aee_rr_show_last_bus,
	aee_rr_show_suspend_debug_flag
};

#define array_size(x) (sizeof(x) / sizeof((x)[0]))
int aee_rr_reboot_reason_show(struct seq_file *m, void *v)
{
	int i, cpu;

	if (ram_console_check_header(ram_console_old)) {
		seq_puts(m, "NO VALID DATA.\n");
		seq_puts(m, "Only try to dump last_XXX.\n");
		for (i = 0; i < array_size(aee_rr_last_xxx); i++)
			aee_rr_last_xxx[i] (m);
		return 0;
	}
	for (i = 0; i < array_size(aee_rr_show); i++)
		aee_rr_show[i] (m);

	for (cpu = 0; cpu < num_possible_cpus(); cpu++) {
		seq_printf(m, "CPU %d\n", cpu);
		for (i = 0; i < array_size(aee_rr_show_cpu); i++)
			aee_rr_show_cpu[i] (m, cpu);
	}
	return 0;
}