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);