static int __init sec_tima_log_setup(char *str)
{
unsigned size = memparse(str, &str);
unsigned long base = 0;
/* If we encounter any problem parsing str ... */
if (!size || size != roundup_pow_of_two(size) || *str != '@'
|| kstrtoul(str + 1, 0, &base))
goto out;
if (reserve_bootmem(base , size, BOOTMEM_EXCLUSIVE)) {
pr_err("%s: failed reserving size %d " \
"at base 0x%lx\n", __func__, size, base);
goto out;
}
pr_info("tima :%s, base:%lx, size:%x \n", __func__,base, size);
if( !tima_setup_rkp_mem())
goto out;
return 1;
out:
return 0;
}
static int tima_setup_rkp_mem(void){
#ifdef CONFIG_NO_BOOTMEM
if (memblock_is_region_reserved(TIMA_DEBUG_LOG_START, TIMA_DEBUG_LOG_SIZE) ||
memblock_reserve(TIMA_DEBUG_LOG_START, TIMA_DEBUG_LOG_SIZE)) {
#else
if(reserve_bootmem(TIMA_DEBUG_LOG_START, TIMA_DEBUG_LOG_SIZE, BOOTMEM_EXCLUSIVE)){
#endif
pr_err("%s: RKP failed reserving size %d " \
"at base 0x%x\n", __func__, TIMA_DEBUG_LOG_SIZE, TIMA_DEBUG_LOG_START);
goto out;
}
pr_info("RKP :%s, base:%x, size:%x \n", __func__,TIMA_DEBUG_LOG_START, TIMA_DEBUG_LOG_SIZE);
#ifdef CONFIG_NO_BOOTMEM
if (memblock_is_region_reserved(TIMA_SEC_LOG, TIMA_SEC_LOG_SIZE) ||
memblock_reserve(TIMA_SEC_LOG, TIMA_SEC_LOG_SIZE)) {
#else
if(reserve_bootmem(TIMA_SEC_LOG, TIMA_SEC_LOG_SIZE, BOOTMEM_EXCLUSIVE)){
#endif
pr_err("%s: RKP failed reserving size %d " \
"at base 0x%x\n", __func__, TIMA_SEC_LOG_SIZE, TIMA_SEC_LOG);
goto out;
}
pr_info("RKP :%s, base:%x, size:%x \n", __func__,TIMA_SEC_LOG, TIMA_SEC_LOG_SIZE);
#ifdef CONFIG_NO_BOOTMEM
if (memblock_is_region_reserved(TIMA_PHYS_MAP, TIMA_PHYS_MAP_SIZE) ||
memblock_reserve(TIMA_PHYS_MAP, TIMA_PHYS_MAP_SIZE)) {
#else
if(reserve_bootmem(TIMA_PHYS_MAP, TIMA_PHYS_MAP_SIZE, BOOTMEM_EXCLUSIVE)){
#endif
pr_err("%s: RKP failed reserving size %d " \
"at base 0x%x\n", __func__, TIMA_PHYS_MAP_SIZE, TIMA_PHYS_MAP);
goto out;
}
pr_info("RKP :%s, base:%x, size:%x \n", __func__,TIMA_PHYS_MAP, TIMA_PHYS_MAP_SIZE);
#ifdef CONFIG_NO_BOOTMEM
if (memblock_is_region_reserved(TIMA_DASHBOARD_START, TIMA_DASHBOARD_SIZE) ||
memblock_reserve(TIMA_DASHBOARD_START, TIMA_DASHBOARD_SIZE)) {
#else
if(reserve_bootmem(TIMA_DASHBOARD_START, TIMA_DASHBOARD_SIZE, BOOTMEM_EXCLUSIVE)){
#endif
pr_err("%s: RKP failed reserving size %d " \
"at base 0x%x\n", __func__, TIMA_DASHBOARD_SIZE, TIMA_DASHBOARD_START);
goto out;
}
pr_info("RKP :%s, base:%x, size:%x \n", __func__,TIMA_DASHBOARD_START, TIMA_DASHBOARD_SIZE);
#ifdef CONFIG_NO_BOOTMEM
if (memblock_is_region_reserved(TIMA_ROBUF_START, TIMA_ROBUF_SIZE) ||
memblock_reserve(TIMA_ROBUF_START, TIMA_ROBUF_SIZE)) {
#else
if(reserve_bootmem(TIMA_ROBUF_START, TIMA_ROBUF_SIZE, BOOTMEM_EXCLUSIVE)){
#endif
pr_err("%s: RKP failed reserving size %d " \
"at base 0x%x\n", __func__, TIMA_ROBUF_SIZE, TIMA_ROBUF_START);
goto out;
}
pr_info("RKP :%s, base:%x, size:%x \n", __func__,TIMA_ROBUF_START, TIMA_ROBUF_SIZE);
#ifdef CONFIG_NO_BOOTMEM
if (memblock_is_region_reserved(TIMA_VMM_START, TIMA_VMM_SIZE) ||
memblock_reserve(TIMA_VMM_START, TIMA_VMM_SIZE)) {
#else
if(reserve_bootmem(TIMA_VMM_START, TIMA_VMM_SIZE, BOOTMEM_EXCLUSIVE)){
#endif
pr_err("%s: RKP failed reserving size %d " \
"at base 0x%x\n", __func__, TIMA_VMM_SIZE, TIMA_VMM_START);
goto out;
}
pr_info("RKP :%s, base:%x, size:%x \n", __func__,TIMA_VMM_START, TIMA_VMM_SIZE);
return 1;
out:
return 0;
}
#else /* !CONFIG_TIMA_RKP*/
static int tima_setup_rkp_mem(void){
return 1;
}
#endif
static int __init sec_tima_log_setup(char *str)
{
unsigned size = memparse(str, &str);
unsigned long base = 0;
/* If we encounter any problem parsing str ... */
if (!size || size != roundup_pow_of_two(size) || *str != '@'
|| kstrtoul(str + 1, 0, &base))
goto out;
#ifdef CONFIG_NO_BOOTMEM
if (memblock_is_region_reserved(base, size) ||
memblock_reserve(base, size)) {
#else
if (reserve_bootmem(base , size, BOOTMEM_EXCLUSIVE)) {
#endif
pr_err("%s: failed reserving size %d " \
"at base 0x%lx\n", __func__, size, base);
goto out;
}
pr_info("tima :%s, base:%lx, size:%x \n", __func__,base, size);
tima_debug_logging_start = base;
if( !tima_setup_rkp_mem()) goto out;
return 1;
out:
return 0;
}
__setup("sec_tima_log=", sec_tima_log_setup);
ssize_t tima_read(struct file *filep, char __user *buf, size_t size, loff_t *offset)
{
/* First check is to get rid of integer overflow exploits */
if (size > DEBUG_LOG_SIZE || (*offset) + size > DEBUG_LOG_SIZE) {
printk(KERN_ERR"Extra read\n");
return -EINVAL;
}
if (!strcmp(filep->f_path.dentry->d_iname, "tima_secure_log"))
tima_log_addr = tima_secure_log_addr;
else if( !strcmp(filep->f_path.dentry->d_iname, "tima_debug_log"))
tima_log_addr = tima_debug_log_addr;
#ifdef CONFIG_TIMA_RKP
else if( !strcmp(filep->f_path.dentry->d_iname, "tima_debug_rkp_log"))
tima_log_addr = tima_debug_rkp_log_addr;
else
tima_log_addr = tima_secure_rkp_log_addr;
#endif
if (copy_to_user(buf, (const char *)tima_log_addr + (*offset), size)) {
printk(KERN_ERR"Copy to user failed\n");
return -1;
} else {
*offset += size;
return size;
}
}
static const struct file_operations tima_proc_fops = {
.read = tima_read,
};
/**
* tima_debug_log_read_init - Initialization function for TIMA
*
* It creates and initializes tima proc entry with initialized read handler
*/
static int __init tima_debug_log_read_init(void)
{
unsigned long tima_secure_logging_start = 0;
tima_secure_logging_start = tima_debug_logging_start + DEBUG_LOG_SIZE;
if (proc_create("tima_debug_log", 0644,NULL, &tima_proc_fops) == NULL) {
printk(KERN_ERR"tima_debug_log_read_init: Error creating proc entry\n");
goto error_return;
}
if (proc_create("tima_secure_log", 0644,NULL, &tima_proc_fops) == NULL) {
printk(KERN_ERR"tima_secure_log_read_init: Error creating proc entry\n");
goto remove_debug_entry;
}
printk(KERN_INFO"tima_debug_log_read_init: Registering /proc/tima_debug_log Interface \n");
#ifdef CONFIG_TIMA_RKP
if (proc_create("tima_debug_rkp_log", 0644,NULL, &tima_proc_fops) == NULL) {
printk(KERN_ERR"tima_debug_rkp_log_read_init: Error creating proc entry\n");
goto remove_secure_entry;
}
if (proc_create("tima_secure_rkp_log", 0644,NULL, &tima_proc_fops) == NULL) {
printk(KERN_ERR"tima_secure_rkp_log_read_init: Error creating proc entry\n");
goto remove_debug_rkp_entry;
}
#endif
tima_debug_log_addr = (unsigned long *)phys_to_virt(tima_debug_logging_start);
tima_secure_log_addr = (unsigned long *)phys_to_virt(tima_secure_logging_start);
#ifdef CONFIG_TIMA_RKP
tima_debug_rkp_log_addr = (unsigned long *)phys_to_virt(DEBUG_RKP_LOG_START);
tima_secure_rkp_log_addr = (unsigned long *)phys_to_virt(SECURE_RKP_LOG_START);
#endif
return 0;
#ifdef CONFIG_TIMA_RKP
remove_debug_rkp_entry:
remove_proc_entry("tima_debug_rkp_log", NULL);
remove_secure_entry:
remove_proc_entry("tima_secure_log", NULL);
#endif
remove_debug_entry:
remove_proc_entry("tima_debug_log", NULL);
error_return:
return -1;
}
/**
* tima_debug_log_read_exit - Cleanup Code for TIMA
*
* It removes /proc/tima proc entry and does the required cleanup operations
*/
static void __exit tima_debug_log_read_exit(void)
{
remove_proc_entry("tima_debug_log", NULL);
remove_proc_entry("tima_secure_log", NULL);
#ifdef CONFIG_TIMA_RKP
remove_proc_entry("tima_debug_rkp_log", NULL);
remove_proc_entry("tima_secure_rkp_log", NULL);
#endif
printk(KERN_INFO"Deregistering /proc/tima_debug_log Interface\n");
}
module_init(tima_debug_log_read_init);
module_exit(tima_debug_log_read_exit);
MODULE_DESCRIPTION(DRIVER_DESC);
