/
sec_debug.c
1736 lines (1487 loc) · 44.2 KB
/
sec_debug.c
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/*
* sec_debug.c
*
*/
#include <linux/errno.h>
#include <linux/ctype.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <mach/regs-pmu.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/uaccess.h>
#include <linux/proc_fs.h>
#include <linux/bootmem.h>
#include <linux/kmsg_dump.h>
#include <linux/kallsyms.h>
#include <linux/ptrace.h>
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <linux/moduleparam.h>
#include <asm/system_misc.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <mach/sec_debug.h>
#include <mach/regs-clock.h>
#include <plat/map-base.h>
#include <plat/map-s5p.h>
#include <asm/mach/map.h>
#include <plat/regs-watchdog.h>
#include <linux/seq_file.h>
#include "common.h"
/* klaatu - schedule log */
#ifdef CONFIG_SEC_DEBUG_SCHED_LOG
#define SCHED_LOG_MAX 2048
struct sched_log {
struct task_log {
unsigned long long time;
char comm[TASK_COMM_LEN];
pid_t pid;
} task[CONFIG_NR_CPUS][SCHED_LOG_MAX];
struct irq_log {
unsigned long long time;
int irq;
void *fn;
int en;
} irq[CONFIG_NR_CPUS][SCHED_LOG_MAX];
struct work_log {
unsigned long long time;
struct worker *worker;
struct work_struct *work;
work_func_t f;
int en;
} work[CONFIG_NR_CPUS][SCHED_LOG_MAX];
#ifdef CONFIG_SEC_DEBUG_TIMER_LOG
struct timer_log {
unsigned long long time;
unsigned int type;
void *fn;
} timer[CONFIG_NR_CPUS][SCHED_LOG_MAX];
#endif /* CONFIG_SEC_DEBUG_TIMER_LOG */
};
#endif /* CONFIG_SEC_DEBUG_SCHED_LOG */
#ifdef CONFIG_SEC_DEBUG_AUXILIARY_LOG
#define AUX_LOG_CPU_CLOCK_SWITCH_MAX 128
#define AUX_LOG_RUNTIME_PM_MAX 128
#define AUX_LOG_PM_MAX 1024
#define AUX_LOG_NOTIFY_FAIL_MAX 64
#define AUX_LOG_LENGTH 128
struct auxiliary_info {
unsigned long long time;
int cpu;
char log[AUX_LOG_LENGTH];
};
/* This structure will be modified if some other items added for log */
struct auxiliary_log {
struct auxiliary_info CpuClockSwitchLog[AUX_LOG_CPU_CLOCK_SWITCH_MAX];
struct auxiliary_info RuntimePmLog[AUX_LOG_RUNTIME_PM_MAX];
struct auxiliary_info PmLog[AUX_LOG_PM_MAX];
struct auxiliary_info NotifyFailLog[AUX_LOG_NOTIFY_FAIL_MAX];
};
#else
#endif
#ifdef CONFIG_SEC_DEBUG_SEMAPHORE_LOG
#define SEMAPHORE_LOG_MAX 100
struct sem_debug {
struct list_head list;
struct semaphore *sem;
struct task_struct *task;
pid_t pid;
int cpu;
/* char comm[TASK_COMM_LEN]; */
};
enum {
READ_SEM,
WRITE_SEM
};
#define RWSEMAPHORE_LOG_MAX 100
struct rwsem_debug {
struct list_head list;
struct rw_semaphore *sem;
struct task_struct *task;
pid_t pid;
int cpu;
int direction;
/* char comm[TASK_COMM_LEN]; */
};
#endif /* CONFIG_SEC_DEBUG_SEMAPHORE_LOG */
/* layout of SDRAM
0: magic (4B)
4~1023: panic string (1020B)
1024~0x1000: panic dumper log
0x4000: copy of magic
*/
#define SEC_DEBUG_MAGIC_PA S5P_PA_SDRAM
#define SEC_DEBUG_MAGIC_VA phys_to_virt(SEC_DEBUG_MAGIC_PA)
enum sec_debug_reset_reason_t {
RR_S = 1,
RR_W = 2,
RR_D = 3,
RR_K = 4,
RR_M = 5,
RR_P = 6,
RR_R = 7,
RR_B = 8,
RR_N = 9,
};
enum sec_debug_upload_cause_t {
UPLOAD_CAUSE_INIT = 0xCAFEBABE,
UPLOAD_CAUSE_KERNEL_PANIC = 0x000000C8,
UPLOAD_CAUSE_FORCED_UPLOAD = 0x00000022,
UPLOAD_CAUSE_CP_ERROR_FATAL = 0x000000CC,
UPLOAD_CAUSE_USER_FAULT = 0x0000002F,
UPLOAD_CAUSE_HSIC_DISCONNECTED = 0x000000DD,
};
struct sec_debug_mmu_reg_t {
int SCTLR;
int TTBR0;
int TTBR1;
int TTBCR;
int DACR;
int DFSR;
int DFAR;
int IFSR;
int IFAR;
int DAFSR;
int IAFSR;
int PMRRR;
int NMRRR;
int FCSEPID;
int CONTEXT;
int URWTPID;
int UROTPID;
int POTPIDR;
};
/* ARM CORE regs mapping structure */
struct sec_debug_core_t {
/* COMMON */
unsigned int r0;
unsigned int r1;
unsigned int r2;
unsigned int r3;
unsigned int r4;
unsigned int r5;
unsigned int r6;
unsigned int r7;
unsigned int r8;
unsigned int r9;
unsigned int r10;
unsigned int r11;
unsigned int r12;
/* SVC */
unsigned int r13_svc;
unsigned int r14_svc;
unsigned int spsr_svc;
/* PC & CPSR */
unsigned int pc;
unsigned int cpsr;
/* USR/SYS */
unsigned int r13_usr;
unsigned int r14_usr;
/* FIQ */
unsigned int r8_fiq;
unsigned int r9_fiq;
unsigned int r10_fiq;
unsigned int r11_fiq;
unsigned int r12_fiq;
unsigned int r13_fiq;
unsigned int r14_fiq;
unsigned int spsr_fiq;
/* IRQ */
unsigned int r13_irq;
unsigned int r14_irq;
unsigned int spsr_irq;
/* MON */
unsigned int r13_mon;
unsigned int r14_mon;
unsigned int spsr_mon;
/* ABT */
unsigned int r13_abt;
unsigned int r14_abt;
unsigned int spsr_abt;
/* UNDEF */
unsigned int r13_und;
unsigned int r14_und;
unsigned int spsr_und;
};
/* enable/disable sec_debug feature
* level = 0 when enable = 0 && enable_user = 0
* level = 1 when enable = 1 && enable_user = 0
* level = 0x10001 when enable = 1 && enable_user = 1
* The other cases are not considered
*/
union sec_debug_level_t sec_debug_level = { .en.kernel_fault = 1, };
static unsigned reset_reason = RR_N;
module_param_named(reset_reason, reset_reason, uint, 0644);
module_param_named(enable, sec_debug_level.en.kernel_fault, ushort, 0644);
module_param_named(enable_user, sec_debug_level.en.user_fault, ushort, 0644);
module_param_named(level, sec_debug_level.uint_val, uint, 0644);
/* klaatu - schedule log */
#ifdef CONFIG_SEC_DEBUG_SCHED_LOG
static struct sched_log sec_debug_log __cacheline_aligned;
/*
static struct sched_log sec_debug_log[NR_CPUS][SCHED_LOG_MAX]
__cacheline_aligned;
*/
static atomic_t task_log_idx[NR_CPUS] = { ATOMIC_INIT(-1), ATOMIC_INIT(-1) };
static atomic_t irq_log_idx[NR_CPUS] = { ATOMIC_INIT(-1), ATOMIC_INIT(-1) };
static atomic_t work_log_idx[NR_CPUS] = { ATOMIC_INIT(-1), ATOMIC_INIT(-1) };
#ifdef CONFIG_SEC_DEBUG_TIMER_LOG
static atomic_t timer_log_idx[NR_CPUS] = { ATOMIC_INIT(-1), ATOMIC_INIT(-1) };
#endif /* CONFIG_SEC_DEBUG_TIMER_LOG */
static struct sched_log (*psec_debug_log) = (&sec_debug_log);
/*
static struct sched_log (*psec_debug_log)[NR_CPUS][SCHED_LOG_MAX]
= (&sec_debug_log);
*/
#ifdef CONFIG_SEC_DEBUG_IRQ_EXIT_LOG
static unsigned long long gExcpIrqExitTime[NR_CPUS];
#endif
#ifdef CONFIG_SEC_DEBUG_AUXILIARY_LOG
static struct auxiliary_log gExcpAuxLog __cacheline_aligned;
static struct auxiliary_log *gExcpAuxLogPtr;
static atomic_t gExcpAuxCpuClockSwitchLogIdx = ATOMIC_INIT(-1);
static atomic_t gExcpAuxRuntimePmLogIdx = ATOMIC_INIT(-1);
static atomic_t gExcpAuxPmLogIdx = ATOMIC_INIT(-1);
static atomic_t gExcpAuxNotifyFailLogIdx = ATOMIC_INIT(-1);
#endif
#ifdef CONFIG_SEC_DEBUG_SCHED_LOG
#include <asm/cacheflush.h>
void sched_log_clean_cache(void)
{
clean_dcache_area(&sec_debug_log, sizeof(sec_debug_log));
}
#endif
static int bStopLogging;
static int checksum_sched_log(void)
{
int sum = 0, i;
for (i = 0; i < sizeof(sec_debug_log); i++)
sum += *((char *)&sec_debug_log + i);
return sum;
}
#ifdef CONFIG_SEC_DEBUG_SCHED_LOG_NONCACHED
static void map_noncached_sched_log_buf(void)
{
struct map_desc slog_buf_iodesc[] = {
{
.virtual = (unsigned long)S3C_VA_SLOG_BUF,
.length = 0x200000,
.type = MT_DEVICE
}
};
slog_buf_iodesc[0].pfn = __phys_to_pfn
((unsigned long)((virt_to_phys(&sec_debug_log)&0xfff00000)));
iotable_init(slog_buf_iodesc, ARRAY_SIZE(slog_buf_iodesc));
psec_debug_log = (void *)(S3C_VA_SLOG_BUF +
(((unsigned long)(&sec_debug_log))&0x000fffff));
}
#endif
#ifdef CONFIG_SEC_DEBUG_AUXILIARY_LOG
static void map_noncached_aux_log_buf(void)
{
struct map_desc auxlog_buf_iodesc[] = {
{
.virtual = (unsigned long)S3C_VA_AUXLOG_BUF,
.length = 0x200000,
.type = MT_DEVICE
}
};
auxlog_buf_iodesc[0].pfn = __phys_to_pfn
((unsigned long)((virt_to_phys(&gExcpAuxLog)&0xfff00000)));
iotable_init(auxlog_buf_iodesc, ARRAY_SIZE(auxlog_buf_iodesc));
gExcpAuxLogPtr = (void *)(S3C_VA_AUXLOG_BUF +
(((unsigned long)(&gExcpAuxLog))&0x000fffff));
}
#endif
#else
static int checksum_sched_log(void)
{
return 0;
}
#endif
/* klaatu - semaphore log */
#ifdef CONFIG_SEC_DEBUG_SEMAPHORE_LOG
struct sem_debug sem_debug_free_head;
struct sem_debug sem_debug_done_head;
int sem_debug_free_head_cnt;
int sem_debug_done_head_cnt;
int sem_debug_init;
spinlock_t sem_debug_lock;
/* rwsemaphore logging */
struct rwsem_debug rwsem_debug_free_head;
struct rwsem_debug rwsem_debug_done_head;
int rwsem_debug_free_head_cnt;
int rwsem_debug_done_head_cnt;
int rwsem_debug_init;
spinlock_t rwsem_debug_lock;
#endif /* CONFIG_SEC_DEBUG_SEMAPHORE_LOG */
DEFINE_PER_CPU(struct sec_debug_core_t, sec_debug_core_reg);
DEFINE_PER_CPU(struct sec_debug_mmu_reg_t, sec_debug_mmu_reg);
DEFINE_PER_CPU(enum sec_debug_upload_cause_t, sec_debug_upload_cause);
/* core reg dump function*/
static inline void sec_debug_save_core_reg(struct sec_debug_core_t *core_reg)
{
/* we will be in SVC mode when we enter this function. Collect
SVC registers along with cmn registers. */
asm("str r0, [%0,#0]\n\t" /* R0 is pushed first to core_reg */
"mov r0, %0\n\t" /* R0 will be alias for core_reg */
"str r1, [r0,#4]\n\t" /* R1 */
"str r2, [r0,#8]\n\t" /* R2 */
"str r3, [r0,#12]\n\t" /* R3 */
"str r4, [r0,#16]\n\t" /* R4 */
"str r5, [r0,#20]\n\t" /* R5 */
"str r6, [r0,#24]\n\t" /* R6 */
"str r7, [r0,#28]\n\t" /* R7 */
"str r8, [r0,#32]\n\t" /* R8 */
"str r9, [r0,#36]\n\t" /* R9 */
"str r10, [r0,#40]\n\t" /* R10 */
"str r11, [r0,#44]\n\t" /* R11 */
"str r12, [r0,#48]\n\t" /* R12 */
/* SVC */
"str r13, [r0,#52]\n\t" /* R13_SVC */
"str r14, [r0,#56]\n\t" /* R14_SVC */
"mrs r1, spsr\n\t" /* SPSR_SVC */
"str r1, [r0,#60]\n\t"
/* PC and CPSR */
"sub r1, r15, #0x4\n\t" /* PC */
"str r1, [r0,#64]\n\t"
"mrs r1, cpsr\n\t" /* CPSR */
"str r1, [r0,#68]\n\t"
/* SYS/USR */
"mrs r1, cpsr\n\t" /* switch to SYS mode */
"and r1, r1, #0xFFFFFFE0\n\t"
"orr r1, r1, #0x1f\n\t"
"msr cpsr,r1\n\t"
"str r13, [r0,#72]\n\t" /* R13_USR */
"str r14, [r0,#76]\n\t" /* R14_USR */
/* FIQ */
"mrs r1, cpsr\n\t" /* switch to FIQ mode */
"and r1,r1,#0xFFFFFFE0\n\t"
"orr r1,r1,#0x11\n\t"
"msr cpsr,r1\n\t"
"str r8, [r0,#80]\n\t" /* R8_FIQ */
"str r9, [r0,#84]\n\t" /* R9_FIQ */
"str r10, [r0,#88]\n\t" /* R10_FIQ */
"str r11, [r0,#92]\n\t" /* R11_FIQ */
"str r12, [r0,#96]\n\t" /* R12_FIQ */
"str r13, [r0,#100]\n\t" /* R13_FIQ */
"str r14, [r0,#104]\n\t" /* R14_FIQ */
"mrs r1, spsr\n\t" /* SPSR_FIQ */
"str r1, [r0,#108]\n\t"
/* IRQ */
"mrs r1, cpsr\n\t" /* switch to IRQ mode */
"and r1, r1, #0xFFFFFFE0\n\t"
"orr r1, r1, #0x12\n\t"
"msr cpsr,r1\n\t"
"str r13, [r0,#112]\n\t" /* R13_IRQ */
"str r14, [r0,#116]\n\t" /* R14_IRQ */
"mrs r1, spsr\n\t" /* SPSR_IRQ */
"str r1, [r0,#120]\n\t"
/* MON */
"mrs r1, cpsr\n\t" /* switch to monitor mode */
"and r1, r1, #0xFFFFFFE0\n\t"
"orr r1, r1, #0x16\n\t"
"msr cpsr,r1\n\t"
"str r13, [r0,#124]\n\t" /* R13_MON */
"str r14, [r0,#128]\n\t" /* R14_MON */
"mrs r1, spsr\n\t" /* SPSR_MON */
"str r1, [r0,#132]\n\t"
/* ABT */
"mrs r1, cpsr\n\t" /* switch to Abort mode */
"and r1, r1, #0xFFFFFFE0\n\t"
"orr r1, r1, #0x17\n\t"
"msr cpsr,r1\n\t"
"str r13, [r0,#136]\n\t" /* R13_ABT */
"str r14, [r0,#140]\n\t" /* R14_ABT */
"mrs r1, spsr\n\t" /* SPSR_ABT */
"str r1, [r0,#144]\n\t"
/* UND */
"mrs r1, cpsr\n\t" /* switch to undef mode */
"and r1, r1, #0xFFFFFFE0\n\t"
"orr r1, r1, #0x1B\n\t"
"msr cpsr,r1\n\t"
"str r13, [r0,#148]\n\t" /* R13_UND */
"str r14, [r0,#152]\n\t" /* R14_UND */
"mrs r1, spsr\n\t" /* SPSR_UND */
"str r1, [r0,#156]\n\t"
/* restore to SVC mode */
"mrs r1, cpsr\n\t" /* switch to SVC mode */
"and r1, r1, #0xFFFFFFE0\n\t"
"orr r1, r1, #0x13\n\t"
"msr cpsr,r1\n\t" : /* output */
: "r"(core_reg) /* input */
: "%r0", "%r1" /* clobbered registers */
);
return;
}
static inline void sec_debug_save_mmu_reg(struct sec_debug_mmu_reg_t *mmu_reg)
{
asm("mrc p15, 0, r1, c1, c0, 0\n\t" /* SCTLR */
"str r1, [%0]\n\t"
"mrc p15, 0, r1, c2, c0, 0\n\t" /* TTBR0 */
"str r1, [%0,#4]\n\t"
"mrc p15, 0, r1, c2, c0,1\n\t" /* TTBR1 */
"str r1, [%0,#8]\n\t"
"mrc p15, 0, r1, c2, c0,2\n\t" /* TTBCR */
"str r1, [%0,#12]\n\t"
"mrc p15, 0, r1, c3, c0,0\n\t" /* DACR */
"str r1, [%0,#16]\n\t"
"mrc p15, 0, r1, c5, c0,0\n\t" /* DFSR */
"str r1, [%0,#20]\n\t"
"mrc p15, 0, r1, c6, c0,0\n\t" /* DFAR */
"str r1, [%0,#24]\n\t"
"mrc p15, 0, r1, c5, c0,1\n\t" /* IFSR */
"str r1, [%0,#28]\n\t"
"mrc p15, 0, r1, c6, c0,2\n\t" /* IFAR */
"str r1, [%0,#32]\n\t"
/* Don't populate DAFSR and RAFSR */
"mrc p15, 0, r1, c10, c2,0\n\t" /* PMRRR */
"str r1, [%0,#44]\n\t"
"mrc p15, 0, r1, c10, c2,1\n\t" /* NMRRR */
"str r1, [%0,#48]\n\t"
"mrc p15, 0, r1, c13, c0,0\n\t" /* FCSEPID */
"str r1, [%0,#52]\n\t"
"mrc p15, 0, r1, c13, c0,1\n\t" /* CONTEXT */
"str r1, [%0,#56]\n\t"
"mrc p15, 0, r1, c13, c0,2\n\t" /* URWTPID */
"str r1, [%0,#60]\n\t"
"mrc p15, 0, r1, c13, c0,3\n\t" /* UROTPID */
"str r1, [%0,#64]\n\t"
"mrc p15, 0, r1, c13, c0,4\n\t" /* POTPIDR */
"str r1, [%0,#68]\n\t" : /* output */
: "r"(mmu_reg) /* input */
: "%r1", "memory" /* clobbered register */
);
}
inline void sec_debug_save_context(void)
{
unsigned long flags;
local_irq_save(flags);
sec_debug_save_mmu_reg(&per_cpu(sec_debug_mmu_reg, smp_processor_id()));
sec_debug_save_core_reg(&per_cpu
(sec_debug_core_reg, smp_processor_id()));
pr_emerg("(%s) context saved(CPU:%d)\n", __func__, smp_processor_id());
local_irq_restore(flags);
}
static void sec_debug_set_upload_magic(unsigned magic, char *str)
{
pr_emerg("(%s) %x\n", __func__, magic);
*(unsigned int *)SEC_DEBUG_MAGIC_VA = magic;
*(unsigned int *)(SEC_DEBUG_MAGIC_VA + 0x4000) = magic;
if (str)
strncpy((char *)SEC_DEBUG_MAGIC_VA + 4, str, SZ_1K - 4);
flush_cache_all();
outer_flush_all();
}
static int sec_debug_normal_reboot_handler(struct notifier_block *nb,
unsigned long l, void *p)
{
sec_debug_set_upload_magic(0x0, NULL);
return 0;
}
static void sec_debug_set_upload_cause(enum sec_debug_upload_cause_t type)
{
per_cpu(sec_debug_upload_cause, smp_processor_id()) = type;
/* to check VDD_ALIVE / XnRESET issue */
__raw_writel(type, EXYNOS_INFORM3);
__raw_writel(type, EXYNOS_INFORM4);
__raw_writel(type, EXYNOS_INFORM6);
pr_emerg("(%s) %x\n", __func__, type);
}
/*
* Called from dump_stack()
* This function call does not necessarily mean that a fatal error
* had occurred. It may be just a warning.
*/
static inline int sec_debug_dump_stack(void)
{
if (!sec_debug_level.en.kernel_fault)
return -1;
sec_debug_save_context();
/* flush L1 from each core.
L2 will be flushed later before reset. */
flush_cache_all();
return 0;
}
static inline void sec_debug_hw_reset(void)
{
pr_emerg("(%s) %s\n", __func__, linux_banner);
pr_emerg("(%s) rebooting...\n", __func__);
flush_cache_all();
outer_flush_all();
#ifdef CONFIG_ARCH_EXYNOS3
exynos3_restart(0, 0);
#else
exynos4_restart(0, 0);
#endif
while (1) {
pr_err("should not be happend\n");
pr_err("should not be happend\n");
}
}
#ifdef CONFIG_SEC_WATCHDOG_RESET
static inline void sec_debug_disable_watchdog(void)
{
writel(0, S3C2410_WTCON);
pr_err("(%s) disable watchdog reset while printing log\n", __func__);
}
#endif
#ifdef CONFIG_SEC_DEBUG_FUPLOAD_DUMP_MORE
static void dump_all_task_info(void);
static void dump_cpu_stat(void);
/* static void dump_state_and_upload(void); */
#endif
static int sec_debug_panic_handler(struct notifier_block *nb,
unsigned long l, void *buf)
{
if (!sec_debug_level.en.kernel_fault)
return -1;
local_irq_disable();
#ifdef CONFIG_SEC_DEBUG_SCHED_LOG
bStopLogging = 1;
/* TODO: Shoud print PLL ? */
/*
* pr_info("APLL_CON :%x \n", __raw_readl(EXYNOS5_APLL_CON0) );
* pr_info("BPLL_CON :%x \n", __raw_readl(EXYNOS5_BPLL_CON0) );
* pr_info("KPLL_CON :%x \n", __raw_readl(EXYNOS5_KPLL_CON0) );
*/
#endif
sec_debug_set_upload_magic(0x66262564, buf);
if (!strcmp(buf, "User Fault"))
sec_debug_set_upload_cause(UPLOAD_CAUSE_USER_FAULT);
else if (!strcmp(buf, "Crash Key"))
sec_debug_set_upload_cause(UPLOAD_CAUSE_FORCED_UPLOAD);
else if (!strncmp(buf, "CP Crash", 8))
sec_debug_set_upload_cause(UPLOAD_CAUSE_CP_ERROR_FATAL);
else if (!strcmp(buf, "HSIC Disconnected"))
sec_debug_set_upload_cause(UPLOAD_CAUSE_HSIC_DISCONNECTED);
else
sec_debug_set_upload_cause(UPLOAD_CAUSE_KERNEL_PANIC);
pr_err("(%s) checksum_sched_log: %x\n", __func__, checksum_sched_log());
#ifdef CONFIG_SEC_WATCHDOG_RESET
sec_debug_disable_watchdog();
#endif
#ifdef CONFIG_SEC_DEBUG_FUPLOAD_DUMP_MORE
dump_all_task_info();
dump_cpu_stat();
#else
show_state();
#endif
sec_debug_dump_stack();
sec_debug_hw_reset();
return 0;
}
#if defined(CONFIG_MACH_Q1_BD)
/*
* This function can be used while current pointer is invalid.
*/
int sec_debug_panic_handler_safe(void *buf)
{
local_irq_disable();
sec_debug_set_upload_magic(0x66262564, buf);
sec_debug_set_upload_cause(UPLOAD_CAUSE_KERNEL_PANIC);
pr_err("(%s) checksum_sched_log: %x\n", __func__, checksum_sched_log());
sec_debug_dump_stack();
sec_debug_hw_reset();
return 0;
}
#endif
#if defined(CONFIG_SEC_DEBUG_ONEKEY)
#define KEY_CHECK_TIME 1200 /* in miliseconds */
#define KEY_COUNT 7
#define KEY_CRASH_CODE KEY_POWER
static void sec_debug_one_key_crash(unsigned int code, int value)
{
static u64 key_press_time[KEY_COUNT];
static int key_count;
static int key_index;
unsigned int crash_key = KEY_POWER;
/* One key Force Upload
* Press a key KEY_COUNT times in KEY_CHECK_TIME milisec.
*/
if (!value)
return;
if (code == crash_key) {
u64 key_prev;
u64 key_time;
key_time = cpu_clock(0);
do_div(key_time, 1000000);
key_index = (key_index + 1) % KEY_COUNT;
if (key_count < KEY_COUNT) {
key_press_time[key_index] = key_time;
key_count++;
} else {
key_press_time[key_index] = key_time;
}
if (key_count >= KEY_COUNT) {
int index = (key_index + 1) % KEY_COUNT;
key_prev = key_press_time[index];
if( key_time - key_prev < KEY_CHECK_TIME )
panic("Forced upload : Crash Key");
}
}
}
#endif
#if !defined(CONFIG_TARGET_LOCALE_NA)
void sec_debug_check_crash_key(unsigned int code, int value)
{
#if defined(CONFIG_SEC_DEBUG_ONEKEY)
if (!sec_debug_level.en.kernel_fault)
return;
/* Using ONE KEY UPLOAD */
sec_debug_one_key_crash(code, value);
#else
static bool volup_p;
static bool voldown_p;
static int loopcount;
static const unsigned int VOLUME_UP = KEY_VOLUMEUP;
static const unsigned int VOLUME_DOWN = KEY_VOLUMEDOWN;
if (!sec_debug_level.en.kernel_fault)
return;
/* Enter Force Upload
* Hold volume down key first
* and then press power key twice
* and volume up key should not be pressed
*/
if (value) {
if (code == VOLUME_UP)
volup_p = true;
if (code == VOLUME_DOWN)
voldown_p = true;
if (!volup_p && voldown_p) {
if (code == KEY_POWER) {
pr_info
("%s: count for enter forced upload : %d\n",
__func__, ++loopcount);
if (loopcount == 2) {
#ifdef CONFIG_FB_S5P
read_lcd_register();
#endif
panic("Crash Key");
}
}
}
} else {
if (code == VOLUME_UP)
volup_p = false;
if (code == VOLUME_DOWN) {
loopcount = 0;
voldown_p = false;
}
}
#endif
}
#else
static struct hrtimer upload_start_timer;
static enum hrtimer_restart force_upload_timer_func(struct hrtimer *timer)
{
panic("Crash Key");
return HRTIMER_NORESTART;
}
/* Volume UP + Volume Down = Force Upload Mode
1. check for VOL_UP and VOL_DOWN
2. if both key pressed start a timer with timeout period 3s
3. if any one of two keys is released before 3s disable timer. */
void sec_debug_check_crash_key(unsigned int code, int value)
{
static bool vol_up, vol_down, key_power, check;
if (!sec_debug_level.en.kernel_fault)
return;
if ((code == KEY_VOLUMEUP) || (code == KEY_VOLUMEDOWN)) {
if (value) {
if (code == KEY_VOLUMEUP)
vol_up = true;
if (code == KEY_VOLUMEDOWN)
vol_down = true;
if (vol_up == true && vol_down == true) {
hrtimer_start(&upload_start_timer,
ktime_set(3, 0),
HRTIMER_MODE_REL);
check = true;
}
} else {
if (vol_up == true)
vol_up = false;
if (vol_down == true)
vol_down = false;
if (check) {
hrtimer_cancel(&upload_start_timer);
check = 0;
}
}
}
}
static int __init upload_timer_init(void)
{
hrtimer_init(&upload_start_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
upload_start_timer.function = force_upload_timer_func;
return 0;
}
/* this should be initialized prior to keypad driver */
early_initcall(upload_timer_init);
#endif
static struct notifier_block nb_reboot_block = {
.notifier_call = sec_debug_normal_reboot_handler
};
static struct notifier_block nb_panic_block = {
.notifier_call = sec_debug_panic_handler,
};
static void sec_kmsg_dump(struct kmsg_dumper *dumper,
enum kmsg_dump_reason reason, const char *s1,
unsigned long l1, const char *s2, unsigned long l2)
{
char *ptr = (char *)SEC_DEBUG_MAGIC_VA + SZ_1K;
int total_chars = SZ_4K - SZ_1K;
int total_lines = 50;
/* no of chars which fits in total_chars *and* in total_lines */
int last_chars;
for (last_chars = 0;
l2 && l2 > last_chars && total_lines > 0
&& total_chars > 0; ++last_chars, --total_chars) {
if (s2[l2 - last_chars] == '\n')
--total_lines;
}
s2 += (l2 - last_chars);
l2 = last_chars;
for (last_chars = 0;
l1 && l1 > last_chars && total_lines > 0
&& total_chars > 0; ++last_chars, --total_chars) {
if (s1[l1 - last_chars] == '\n')
--total_lines;
}
s1 += (l1 - last_chars);
l1 = last_chars;
while (l1-- > 0)
*ptr++ = *s1++;
while (l2-- > 0)
*ptr++ = *s2++;
}
static struct kmsg_dumper sec_dumper = {
.dump = sec_kmsg_dump,
};
int __init sec_debug_init(void)
{
if (!sec_debug_level.en.kernel_fault)
return -1;
sec_debug_magic_init();
sec_debug_set_upload_magic(0x66262564, NULL);
sec_debug_set_upload_cause(UPLOAD_CAUSE_INIT);
#ifdef CONFIG_SEC_DEBUG_SCHED_LOG_NONCACHED
map_noncached_sched_log_buf();
#endif
#ifdef CONFIG_SEC_DEBUG_AUXILIARY_LOG
map_noncached_aux_log_buf();
#endif
kmsg_dump_register(&sec_dumper);
register_reboot_notifier(&nb_reboot_block);
atomic_notifier_chain_register(&panic_notifier_list, &nb_panic_block);
return 0;
}
int get_sec_debug_level(void)
{
return sec_debug_level.uint_val;
}
/* klaatu - schedule log */
#ifdef CONFIG_SEC_DEBUG_SCHED_LOG
void __sec_debug_task_log(int cpu, struct task_struct *task, char *msg)
{
unsigned i;
if (bStopLogging)
return;
if (!task && !msg)
return;
i = atomic_inc_return(&task_log_idx[cpu]) & (SCHED_LOG_MAX - 1);
psec_debug_log->task[cpu][i].time = cpu_clock(cpu);
if (task) {
strlcpy(psec_debug_log->task[cpu][i].comm, task->comm,sizeof(psec_debug_log->task[cpu][i].comm));
psec_debug_log->task[cpu][i].pid = task->pid;
} else {
strlcpy(psec_debug_log->task[cpu][i].comm, msg,sizeof(psec_debug_log->task[cpu][i].comm));
psec_debug_log->task[cpu][i].pid = -1;
}
}
void __sec_debug_irq_log(unsigned int irq, void *fn, int en)
{
int cpu = raw_smp_processor_id();
unsigned i;
if (bStopLogging)
return;
i = atomic_inc_return(&irq_log_idx[cpu]) & (SCHED_LOG_MAX - 1);
psec_debug_log->irq[cpu][i].time = cpu_clock(cpu);
psec_debug_log->irq[cpu][i].irq = irq;
psec_debug_log->irq[cpu][i].fn = (void *)fn;
psec_debug_log->irq[cpu][i].en = en;
}
void __sec_debug_work_log(struct worker *worker,
struct work_struct *work, work_func_t f, int en)
{
int cpu = raw_smp_processor_id();
unsigned i;
if (bStopLogging)
return;
i = atomic_inc_return(&work_log_idx[cpu]) & (SCHED_LOG_MAX - 1);
psec_debug_log->work[cpu][i].time = cpu_clock(cpu);
psec_debug_log->work[cpu][i].worker = worker;
psec_debug_log->work[cpu][i].work = work;
psec_debug_log->work[cpu][i].f = f;
psec_debug_log->work[cpu][i].en = en;
}
#ifdef CONFIG_SEC_DEBUG_TIMER_LOG
void __sec_debug_timer_log(unsigned int type, void *fn)
{
int cpu = raw_smp_processor_id();
unsigned i;
if (bStopLogging)
return;
i = atomic_inc_return(&timer_log_idx[cpu]) & (SCHED_LOG_MAX - 1);
psec_debug_log->timer[cpu][i].time = cpu_clock(cpu);
psec_debug_log->timer[cpu][i].type = type;
psec_debug_log->timer[cpu][i].fn = fn;
}
#endif /* CONFIG_SEC_DEBUG_TIMER_LOG */
#ifdef CONFIG_SEC_DEBUG_IRQ_EXIT_LOG
void sec_debug_irq_last_exit_log(void)
{
int cpu = raw_smp_processor_id();
gExcpIrqExitTime[cpu] = cpu_clock(cpu);
}
#endif
#endif /* CONFIG_SEC_DEBUG_SCHED_LOG */
#ifdef CONFIG_SEC_DEBUG_AUXILIARY_LOG
void sec_debug_aux_log(int idx, char *fmt, ...)