int LGE_ErrorHandler_Main( int crash_side, char * message)
{
char * kmem_buf;
LG_ErrorHandler_enable = 1;
raw_local_irq_enable();
kmem_buf = kmalloc(LGE_ERROR_MAX_ROW*LGE_ERROR_MAX_COLUMN, GFP_ATOMIC);
memcpy(kmem_buf, message, LGE_ERROR_MAX_ROW*LGE_ERROR_MAX_COLUMN);
switch(crash_side) {
case MODEM_CRASH:
display_info_LCD(crash_side, message);
break;
case APPL_CRASH:
display_info_LCD(crash_side, message);
break;
}
kfree(kmem_buf);
raw_local_irq_disable();
preempt_disable();
mdelay(100);
while(1)
{
// 1. Check Volume UP Key
gpio_direction_output(34,1);
gpio_direction_output(37,0); //volume down
gpio_direction_output(38,1); //volume up
gpio_direction_input(34);
if(gpio_get_value(34)==0){
printk("volup\n");
return SMSM_SYSTEM_REBOOT; //volume up key is pressed
}
mdelay(100);
// 2. Check Volume DOWN Key
gpio_direction_output(34,1);
gpio_direction_output(37,1); //volume down
gpio_direction_output(38,0);
gpio_direction_input(34);
if(gpio_get_value(34)==0){
printk("voldown\n");
return SMSM_SYSTEM_REBOOT; //volume down key is pressed
}
mdelay(100);
}
}
static int rcu_debugfs_show(struct seq_file *m, void *unused)
{
int cpu, q, s[2], msecs;
raw_local_irq_disable();
msecs = div_s64(sched_clock() - rcu_timestamp, NSEC_PER_MSEC);
raw_local_irq_enable();
seq_printf(m, "%14u: #batches seen\n",
rcu_stats.nbatches);
seq_printf(m, "%14u: #barriers seen\n",
atomic_read(&rcu_stats.nbarriers));
seq_printf(m, "%14llu: #callbacks invoked\n",
rcu_stats.ninvoked);
seq_printf(m, "%14u: #callbacks left to invoke\n",
atomic_read(&rcu_stats.nleft));
seq_printf(m, "%14u: #msecs since last end-of-batch\n",
msecs);
seq_printf(m, "%14u: #passes forced (0 is best)\n",
rcu_stats.nforced);
seq_printf(m, "\n");
for_each_online_cpu(cpu)
seq_printf(m, "%4d ", cpu);
seq_printf(m, " CPU\n");
s[1] = s[0] = 0;
for_each_online_cpu(cpu) {
struct rcu_data *rd = &rcu_data[cpu];
int w = ACCESS_ONCE(rd->which) & 1;
seq_printf(m, "%c%c%c%d ",
'-',
idle_cpu(cpu) ? 'I' : '-',
rd->wait ? 'W' : '-',
w);
s[w]++;
}
seq_printf(m, " FLAGS\n");
for (q = 0; q < 2; q++) {
for_each_online_cpu(cpu) {
struct rcu_data *rd = &rcu_data[cpu];
struct rcu_list *l = &rd->cblist[q];
seq_printf(m, "%4d ", l->count);
}
seq_printf(m, " Q%d%c\n", q, " *"[s[q] > s[q^1]]);
}
seq_printf(m, "\nFLAGS:\n");
seq_printf(m, " I - cpu idle, 0|1 - Q0 or Q1 is current Q, other is previous Q,\n");
seq_printf(m, " W - cpu does not permit current batch to end (waiting),\n");
seq_printf(m, " * - marks the Q that is current for most CPUs.\n");
return 0;
}
/***
* panicrpt_goinpanic
* display info of panic to LCD
* return value : when it reurns '1'(int), panicrpt is doing something
*/
int panicrpt_goinpanic (int epanicpos, char *pbuf)
{
if (!ipanicrpt_notwork) {
if (ipanicrpt_inpanic == 0) {
ipanicrpt_inpanic = 1;
panicrpt_displayerr (epanicpos, pbuf);
//
//while(1) { } ;
preempt_enable ();
raw_local_irq_enable ();
panicrpt_waitinput ();
// machine_emergency_restart ();
//
}
}
return ipanicrpt_notwork;
}
int LGE_ErrorHandler_Main( int crash_side, char * message)
{
char * kmem_buf;
LG_ErrorHandler_enable = 1;
raw_local_irq_enable();
/* [email protected] 10.11.04 S
* 0010515: temporary disable CONFIG_FRAMEBUFFER_CONSOLE because of current consumption
*/
#if 0
kmem_buf = kmalloc(LGE_ERROR_MAX_ROW*LGE_ERROR_MAX_COLUMN, GFP_ATOMIC);
memcpy(kmem_buf, message, LGE_ERROR_MAX_ROW*LGE_ERROR_MAX_COLUMN);
switch(crash_side) {
case MODEM_CRASH:
display_info_LCD(crash_side, message);
break;
case APPL_CRASH:
display_info_LCD(crash_side, message);
break;
}
kfree(kmem_buf);
#endif
/* [email protected] 10.11.04 E */
raw_local_irq_disable();
preempt_disable();
/* BEGIN: 0006765 [email protected] 2010-06-03 */
/* MODIFY 0006765: Fix : The kernel panic screen is disappeared just after linux kernel gets system panic */
mdelay(100);
while(1)
{
// 1. Check Volume Key
/* [email protected] 10.11.03 S
0010460: add HW revision feature to vol key gpio in kernel panic
*/
#if CONFIG_MACH_LGE_BRYCE
#if defined (LG_HW_REV2)
gpio_direction_output(19,1);
gpio_direction_output(56,0); //volume down
gpio_direction_output(20,1); //volume up
gpio_direction_input(19);
if(gpio_get_value(19)==0){
printk("### vol down key pressed \n");
mdelay(100);
/* [email protected] 10.11.03 S
0010472: each volup/voldown key mapped separately to reboot/download mode.
*/
return SMSM_SYSTEM_DOWNLOAD;
/* [email protected] 10.11.03 E */
}
mdelay(100);
gpio_direction_output(19,1);
gpio_direction_output(20,0);
gpio_direction_output(56,1);
gpio_direction_input(19);
if(gpio_get_value(19)==0){
printk("### vol up key pressed\n");
mdelay(100);
return SMSM_SYSTEM_REBOOT;
}
mdelay(100);
#endif
#if defined (LG_HW_REV3) || defined(LG_HW_REV4) || defined(LG_HW_REV5) || defined(LG_HW_REV6) || defined(LG_HW_REV7)
gpio_direction_output(20,1);
gpio_direction_output(56,0); //volume down
gpio_direction_output(19,1); //volume up
gpio_direction_input(20);
if(gpio_get_value(20)==0){
printk("### vol down key pressed \n");
mdelay(100);
/* [email protected] 10.11.03 S
0010472: each volup/voldown key mapped separately to reboot/download mode.
*/
return SMSM_SYSTEM_DOWNLOAD;
/* [email protected] 10.11.03 E */
}
mdelay(100);
gpio_direction_output(20,1);
gpio_direction_output(19,0);
gpio_direction_output(56,1);
gpio_direction_input(20);
if(gpio_get_value(20)==0){
printk("### vol up key pressed\n");
mdelay(100);
return SMSM_SYSTEM_REBOOT;
}
mdelay(100);
#endif
#endif
/* [email protected] 10.11.03 E */
}
/* END: 0006765 [email protected] 2010-06-03 */
}
/*
* do_page_fault()
* Handle all page faults in the system.
*/
asmlinkage void do_page_fault(struct pt_regs *regs,
unsigned long missqw0,
unsigned long missqw1)
{
struct task_struct *tsk;
struct mm_struct *mm;
struct vm_area_struct *vma;
unsigned long acctyp;
const struct exception_table_entry *fix;
pgd_t *pgd;
unsigned long address;
int user = 0;
int fault = 0;
/*
* We should be able to handle an interrupt while resolving
* a fault; so enable interrupts now.
*/
raw_local_irq_enable();
address = MMU_MISSQW1_VPN_GET(missqw1) << MMU_VPN_SHIFT;
fault_printk(FAULT_DBG_TRACE, "FAULT[%d]: ti[%p], missqw0=%08lx, missqw1=%08lx, addr=%08lx\n",
raw_smp_processor_id(), (void *)current_thread_info(), missqw0, missqw1, address);
/*
* If we're in an interrupt, we must not take a fault.
*/
if (in_atomic()) {
printk(KERN_CRIT "FAULT[%d]: page fault on interrupt stack: preempt_count=%x\n",
raw_smp_processor_id(), preempt_count());
goto no_context;
}
/*
* See if we have a valid mm and what mode the PC was in.
*/
tsk = current;
mm = tsk->mm;
user = user_mode(regs);
/*
* If we're in an interrupt, we must not take a fault.
*/
if (!mm) {
printk(KERN_CRIT "FAULT[%d]: page fault without task mm structure\n",
raw_smp_processor_id());
goto no_context;
}
/*
* See if the faulting address is within the task address space.
*/
if (address > TASK_SIZE) {
printk(KERN_CRIT "FAULT[%d]: page fault beyond user space\n", raw_smp_processor_id());
goto no_context;
}
/*
* Make sure that our root page directory handed to use by
* the hardware is the same as for this task. If not, we failed
* to properly update the PGD in switch_mm() or we have a spurious
* hardware fault for a different PGD.
*/
down_read(&mm->mmap_sem);
pgd = (pgd_t *)(MMU_MISSQW0_PGD_GET(missqw0) << MMU_MISSQW0_PGD_SHIFT);
if (mm->pgd != pgd) {
up_read(&mm->mmap_sem);
printk(KERN_CRIT "FAULT[%d]: invalid root page table: %p - %p\n",
raw_smp_processor_id(), mm->pgd, pgd);
goto no_context;
}
/*
* The privilege violations are reported as part of the MMU miss information
* and not as a trap (as is done with other architectures). Thus we must
* check for priv violations and report either a user mode failure
* or kill the kernel.
*/
if (fault_is_priv(regs, missqw0, missqw1)) {
fault_printk(FAULT_DBG_ERROR, "FAULT[%d]: privilege violation\n", raw_smp_processor_id());
goto bad_area;
}
/*
* Read the VMA list and find if we have a VMA covering this
* fault address. The find returns the vma where vma->vm_end
* > address. Make sure to check the start!
*
* Make sure that all paths release the semaphore.
*/
vma = find_vma(mm, address);
if (!vma) {
fault_printk(FAULT_DBG_ERROR, "FAULT[%d]: unable to find address: %lx\n",
raw_smp_processor_id(), address);
goto bad_area;
}
/*
* Is this in a hole in the address space? If so, see if the
* stack region can be expanded to cover the hole.
*/
if (vma->vm_start > address) {
if (!(vma->vm_flags & VM_GROWSDOWN)) {
fault_printk(FAULT_DBG_ERROR, "FAULT[%d]: region is not expandable\n",
raw_smp_processor_id());
goto bad_area;
}
if (expand_stack(vma, address)) {
fault_printk(FAULT_DBG_ERROR, "FAULT[%d]: expand_stack failed\n",
raw_smp_processor_id());
goto bad_area;
}
}
/*
* We have a valid VMA for this address, now determine the type
* of access?
*/
acctyp = fault_access_type(missqw0, missqw1);
if ((vma->vm_flags & acctyp) != acctyp) {
/*
* The access type was not allowed for this region,
* thus we now have a bad_area.
*/
fault_printk(FAULT_DBG_ERROR, "FAULT[%d]: illegal access type: %lx, %lx\n",
raw_smp_processor_id(), vma->vm_flags & acctyp, acctyp);
goto bad_area;
}
/*
* Call generic fault hanlder to resolve the fault. If Linux
* can not resolve the fault, we must terminate instead of
* endlessly retrying the fault.
*/
fault = handle_mm_fault(mm, vma, address, (acctyp & VM_WRITE));
if (unlikely(fault & VM_FAULT_ERROR)) {
/*
* We hit a shared mapping outside of the file, or some
* other thing happened to us that made us unable to
* handle the page fault gracefully.
*/
if (fault & VM_FAULT_OOM) {
up_read(&mm->mmap_sem);
if (user) {
printk(KERN_CRIT "FAULT[%d]: killing process group: %s\n",
raw_smp_processor_id(), current->comm);
do_group_exit(SIGKILL);
return;
}
printk(KERN_CRIT "FAULT[%d]: OOM in kernel space: %s\n",
raw_smp_processor_id(), current->comm);
goto no_context;
}
if (fault & VM_FAULT_SIGBUS) {
fault_printk(FAULT_DBG_ERROR, "FAULT[%d]: handle_mm_fault returned SIGBUS\n",
raw_smp_processor_id());
goto bad_area;
}
printk(KERN_CRIT "Linux changed the definition of VM_FAULT_ERROR: %x\n", fault);
up_read(&mm->mmap_sem);
goto no_context;
return;
}
#if defined(CONFIG_DEBUG_VM)
/*
* Make sure the fault was resolved, if not stop. This should
* only happen during bring-up as it would cause an infinite
* fault in real-life. The primary cause would be different
* views of where an address lies in the 2 level page table.
*/
if (!fault_is_resolved(regs, missqw0, missqw1)) {
printk(KERN_CRIT "do_page_fault: fault not resolved\n");
goto no_context;
}
#endif
/*
* Count the fault types.
*/
if (fault & VM_FAULT_MAJOR) {
current->maj_flt++;
} else {
current->min_flt++;
}
up_read(&mm->mmap_sem);
return;
bad_area:
/*
* Something tried to access memory that is not mappable. If
* this is a user space request, we will signal the user. If
* this is the kernel, we die (unless we can fix it with the
* exception table).
*/
up_read(&mm->mmap_sem);
if (user) {
struct siginfo si;
si.si_signo = SIGSEGV;
si.si_errno = 0;
si.si_code = SEGV_MAPERR;
si.si_addr = (void __user *)address;
force_sig_info(SIGSEGV, &si, tsk);
return;
}
/* Fall through */
no_context:
/*
* Since we can enter here for both user and non-user mode without the above
* check, we need to re-check that we are not in user mode before trying the
* exception table. This prevents a bogus user program from loading a PC with
* an exception table address and trying to get the kernel to do "funny" things.
*
* Try and see if the fault is in the exception table. If found
* move the PC to the fixup location; otherwise terminate.
*/
if (!user) {
fix = search_exception_tables(regs->pc);
if (fix) {
regs->pc = fix->fixup;
return;
}
}
fault_terminate(regs, missqw0, missqw1);
}
int LGE_ErrorHandler_Main( int crash_side, char * message)
{
ram_console_setpanic();
if (hidden_reset_enable) {
if (crash_side == MODEM_CRASH) {
unsigned *temp;
printk(KERN_INFO"%s: arm9 has crashed...\n",__func__);
printk(KERN_INFO"%s\n", message);
atomic_notifier_call_chain(&panic_notifier_list, 0, "arm9 has crashed...\n");
temp = lge_get_fb_copy_virt_addr();
*temp = 0x12345678;
printk(KERN_INFO"%s: hidden magic %x\n",__func__, temp[0]);
return SMSM_SYSTEM_REBOOT;
}
return 0;
}
if(BLUE_ERROR_HANDLER_LEVEL != 0) {
if (get_suspend_state() != PM_SUSPEND_ON) {
lcd_suspend = 0;
}
switch(crash_side) {
case MODEM_CRASH:
case APPL_CRASH:
case ANDROID_CRASH:
if(!LG_ErrorHandler_enable) {
LG_ErrorHandler_enable = 1;
raw_local_irq_enable();
if (message != NULL)
display_info_LCD(crash_side, message);
}
break;
case ANDROID_DISPLAY_INFO :
if (message != NULL)
display_info_LCD(crash_side, message);
return 0;
default :
break;
}
}
raw_local_irq_disable();
preempt_disable();
smsm_reset_modem(SMSM_APPS_SHUTDOWN);
if(BLUE_ERROR_HANDLER_LEVEL == 0) {
mdelay(100);
return SMSM_SYSTEM_REBOOT;
}
while(1)
{
gpio_set_value(36,0);
gpio_set_value(32,1);
gpio_set_value(33,1);
if(gpio_get_value(38)==0) {
printk("Pressed Volume up key\n");
return SMSM_SYSTEM_DOWNLOAD;
} else if(gpio_get_value(37) ==0 ) {
printk("Pressed Volume down key\n");
return SMSM_SYSTEM_REBOOT;
}
mdelay(200);
;
}
}
int main()
{
raw_local_irq_enable();
return 0;
}
