char *emmc_allocate_and_read(int offset, int length)
{
int size;
char *buff = NULL;
if (length == 0) {
return NULL;
}
size = ALIGN(length, EMMC_BLOCK_SIZE);
buff = kzalloc(size, GFP_KERNEL);
if (buff != NULL) {
if (card_dump_func_read(buff, size, offset, DUMP_INTO_BOOT_CARD_IPANIC) != 0) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG,
"%s: read from IPANIC data failed(offset:%d,size:%d)\n", __FUNCTION__, offset, size);
kfree(buff);
return NULL;
}
}
else {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: Cannot allocate buffer to read(len:%d)\n", __FUNCTION__, length);
return NULL;
}
ipanic_block_scramble(buff, size);
return buff;
}
char *ipanic_read_size(int off, int len)
{
int size;
char *buff = NULL;
if (len == 0)
return NULL;
size = ALIGN(len, EMMC_BLOCK_SIZE);
buff = kzalloc(size, GFP_KERNEL);
if (buff == NULL) {
LOGE("%s: cannot allocate buffer(len:%d)\n", __func__, len);
return NULL;
}
if (card_dump_func_read(buff, size, off, DUMP_INTO_BOOT_CARD_IPANIC) != 0) {
LOGE("%s: read failed(offset:%d,size:%d)\n", __func__, off, size);
kfree(buff);
return NULL;
}
return buff;
}
static struct aee_oops *emmc_ipanic_oops_copy(void)
{
struct aee_oops *oops = NULL;
struct ipanic_header *hdr = NULL;
int hdr_size = ALIGN(sizeof(struct ipanic_header), EMMC_BLOCK_SIZE);
hdr = kzalloc(hdr_size, GFP_KERNEL);
if (hdr == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: Cannot allocate ipanic header memory\n", __FUNCTION__);
return NULL;
}
if (card_dump_func_read((unsigned char *)hdr, hdr_size, 0, EMMC_ID) < 0) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: emmc panic log header read failed\n", __func__);
return NULL;
}
ipanic_block_scramble((unsigned char *)hdr, hdr_size);
if (ipanic_header_check(hdr) != 0) {
return NULL;
}
oops = aee_oops_create(AE_DEFECT_FATAL, AE_KE, IPANIC_MODULE_TAG);
if (oops != NULL) {
struct ipanic_oops_header *oops_header = (struct ipanic_oops_header *)
emmc_allocate_and_read(hdr->oops_header_offset, hdr->oops_header_length);
if (oops_header == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: Can't read oops header(len:%d)\n", __FUNCTION__, hdr->oops_header_length);
goto error_return;
}
aee_oops_set_process_path(oops, oops_header->process_path);
aee_oops_set_backtrace(oops, oops_header->backtrace);
kfree(oops_header);
if(hdr->oops_detail_length != 0)
{
oops->detail = emmc_allocate_and_read(hdr->oops_detail_offset, hdr->oops_detail_length);
oops->detail_len = hdr->oops_detail_length;
}else {
#define TMPDETAILSTR "panic detail is empty"
oops->detail = kstrdup(TMPDETAILSTR, GFP_KERNEL);
oops->detail_len = sizeof TMPDETAILSTR;
}
if (oops->detail == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read detail failed(len: %d)\n", __FUNCTION__, oops->detail_len);
goto error_return;
}
oops->console = emmc_allocate_and_read(hdr->console_offset, hdr->console_length);
oops->console_len = hdr->console_length;
if (oops->console == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read console failed(len: %d)\n", __FUNCTION__, oops->console_len);
goto error_return;
}
/*If panic from kernel context, no user sapce info available. Shouldn't fail*/
if (0 == hdr->userspace_info_length)
{
oops->userspace_info = NULL;
oops->userspace_info_len = 0;
}
else
{
oops->userspace_info = emmc_allocate_and_read(hdr->userspace_info_offset, hdr->userspace_info_length);
oops->userspace_info_len = hdr->userspace_info_length;
if (oops->userspace_info == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read usrespace info failed\n", __FUNCTION__);
goto error_return;
}
}
oops->android_main = emmc_allocate_and_read(hdr->android_main_offset, hdr->android_main_length);
oops->android_main_len = hdr->android_main_length;
if (oops->android_main == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read android_main failed\n", __FUNCTION__);
goto error_return;
}
oops->android_radio = emmc_allocate_and_read(hdr->android_radio_offset, hdr->android_radio_length);
oops->android_radio_len = hdr->android_radio_length;
if (oops->android_radio == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read android_radio failed\n", __FUNCTION__);
goto error_return;
}
oops->android_system = emmc_allocate_and_read(hdr->android_system_offset, hdr->android_system_length);
oops->android_system_len = hdr->android_system_length;
if (oops->android_system == NULL) {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: read android_system failed\n", __FUNCTION__);
goto error_return;
}
xlog_printk(ANDROID_LOG_DEBUG, IPANIC_LOG_TAG, "ipanic_oops_copy return OK\n");
kfree(hdr);
return oops;
}
else {
xlog_printk(ANDROID_LOG_ERROR, IPANIC_LOG_TAG, "%s: kmalloc failed at header\n", __FUNCTION__);
kfree(hdr);
return NULL;
}
error_return:
kfree(hdr);
aee_oops_free(oops);
return NULL;
}
static int emmc_read_last_kmsg(void)
{
int size;
struct proc_dir_entry *entry;
struct ram_console_buffer *bufp = NULL;
#ifdef MTK_GPT_SCHEME_SUPPORT
int emmc_ready_flag = 0;
int count = 0;
emmc_ready_flag = get_emmc_dump_status();
while (emmc_ready_flag != 1) {
msleep(2000);
if (emmc_ready_flag == -1) {
pr_err("emmc have no expd partition!\n");
return 1;
}
pr_err("emmc expd not ready!\n");
emmc_ready_flag = get_emmc_dump_status();
count++;
if (count > 100) {
pr_err("emmc mount expd partition error!\n");
return 1;
}
}
#endif
size = ram_console_buffer_size + sizeof(struct ram_console_buffer);
size = size / EMMC_BLOCK_SIZE;
size *= EMMC_BLOCK_SIZE;
ram_console2_log = kzalloc(size, GFP_KERNEL);
if (ram_console2_log == NULL) {
pr_err("ram_console: malloc size 2 error!\n");
return 1;
}
if (card_dump_func_read(ram_console2_log, size, EMMC_ADDR, DUMP_INTO_BOOT_CARD_IPANIC) != 0) {
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 != RAM_CONSOLE_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;
}
