| #include <common.h> |
| #include <environment.h> |
| #include <nand.h> |
| #include <asm/io.h> |
| #include <malloc.h> |
| #include "aml_mtd.h" |
| |
| #if ENABLE_RSV_DTB |
| |
| #ifndef AML_NAND_UBOOT |
| #include<linux/cdev.h> |
| #include <linux/device.h> |
| |
| #define DTB_NAME "amlnf_dtb" |
| static dev_t amlnf_dtb_no; |
| struct cdev amlnf_dtb; |
| struct device *dtb_dev = NULL; |
| struct class *amlnf_dtb_class = NULL; |
| #endif /* AML_NAND_UBOOT */ |
| |
| |
| int dtb_erase_blk = -1; |
| |
| extern int get_partition_from_dts(unsigned char * buffer); |
| |
| struct aml_nand_chip *aml_chip_dtb = NULL; |
| |
| int amlnf_dtb_save(u8 *buf, unsigned int len) |
| { |
| u8 *dtb_buf = NULL; |
| int ret = 0; |
| |
| printk("%s: ####\n", __func__); |
| if (aml_chip_dtb == NULL) { |
| printk("%s: amlnf not init yet!\n", __func__); |
| return -EFAULT; |
| } |
| |
| if (len > aml_chip_dtb->dtbsize) { |
| printk("warnning!!! %s: length too much\n", __func__); |
| len = aml_chip_dtb->dtbsize; |
| /*return -EFAULT;*/ |
| } |
| dtb_buf = kzalloc(aml_chip_dtb->dtbsize, GFP_KERNEL); |
| if (dtb_buf == NULL) { |
| printk("%s: malloc failed\n", __func__); |
| ret = -1; |
| goto exit_err; |
| } |
| memset(dtb_buf, 0, aml_chip_dtb->dtbsize); |
| memcpy(dtb_buf, buf, len); |
| #if 0 //fixit |
| ret = amlnand_save_info_by_name(aml_chip_dtb, |
| (u8 *)&(aml_chip_dtb->amlnf_dtb), |
| dtb_buf, |
| (u8 *)DTD_INFO_HEAD_MAGIC, |
| aml_chip_dtb->dtbsize); |
| if (ret) { |
| printk("%s: nand dtd save failed\n", __func__); |
| ret = -EFAULT; |
| goto exit_err; |
| } |
| #else |
| struct mtd_info *mtd = &aml_chip_dtb->mtd; |
| aml_nand_save_dtb(mtd, dtb_buf); |
| #endif |
| exit_err: |
| if (dtb_buf) { |
| /* kfree(dtb_buf); */ |
| kfree(dtb_buf); |
| dtb_buf = NULL; |
| } |
| return ret; |
| } |
| |
| int amlnf_dtb_erase(void) |
| { |
| int ret = 0; |
| struct mtd_info *mtd = &aml_chip_dtb->mtd; |
| |
| if (aml_chip_dtb == NULL) { |
| printk("%s amlnf not ready yet!\n", __func__); |
| return -1; |
| } |
| |
| ret = aml_nand_erase_dtb(mtd); |
| if (ret) { |
| printk("erase dtb error,%s\n", __func__); |
| ret = -EFAULT; |
| } |
| |
| return ret; |
| } |
| |
| int amlnf_dtb_read(u8 *buf, int len) |
| { |
| u8 *dtb_buf = NULL; |
| int ret = 0; |
| |
| printk("%s: ####\n", __func__); |
| |
| if (len > aml_chip_dtb->dtbsize) { |
| printk("warnning!!! %s dtd length too much\n", __func__); |
| len = aml_chip_dtb->dtbsize; |
| /*return -EFAULT;*/ |
| } |
| if (aml_chip_dtb == NULL) { |
| memset(buf, 0x0, len); |
| printk("%s amlnf not ready yet!\n", __func__); |
| return 0; |
| } |
| #if 0 //fixit |
| if (aml_chip_dtb->amlnf_dtb.arg_valid == 0) { |
| memset(buf, 0x0, len); |
| printk("%s arg_valid = 0 invalid\n", __func__); |
| return 0; |
| } |
| #endif |
| dtb_buf = kzalloc(aml_chip_dtb->dtbsize, GFP_KERNEL); |
| if (dtb_buf == NULL) { |
| printk("%s: malloc failed\n", __func__); |
| ret = -1; |
| goto exit_err; |
| } |
| memset(dtb_buf, 0, aml_chip_dtb->dtbsize); |
| #if 0 //fixit |
| ret = amlnand_read_info_by_name(aml_chip_dtb, |
| (u8 *)&(aml_chip_dtb->amlnf_dtb), |
| (u8 *)dtb_buf, |
| (u8 *)DTD_INFO_HEAD_MAGIC, |
| aml_chip_dtb->dtbsize); |
| if (ret) { |
| printk("dtb error,%s\n", __func__); |
| ret = -EFAULT; |
| goto exit_err; |
| } |
| #else |
| struct mtd_info *mtd = &aml_chip_dtb->mtd; |
| size_t offset = 0; |
| ret = aml_nand_read_dtb(mtd, offset, (u8 *)dtb_buf); |
| #endif |
| memcpy(buf, dtb_buf, len); |
| exit_err: |
| if (dtb_buf) { |
| /* kfree(dtb_buf); */ |
| kfree(dtb_buf); |
| dtb_buf = NULL; |
| } |
| return ret; |
| } |
| |
| /* under kernel */ |
| #ifndef AML_NAND_UBOOT |
| ssize_t dtb_show(struct class *class, struct class_attribute *attr, |
| char *buf) |
| { |
| printk("dtb_show : #####\n"); |
| /* fixme, read back and show in log! */ |
| return 0; |
| } |
| |
| ssize_t dtb_store(struct class *class, struct class_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int ret = 0; |
| u8 *dtb_ptr = NULL; |
| |
| printk("dtb_store : #####\n"); |
| dtb_ptr = kzalloc(aml_chip_dtb->dtbsize, GFP_KERNEL); |
| if (dtb_ptr == NULL) { |
| printk("%s: malloc buf failed\n ", __func__); |
| return -ENOMEM; |
| } |
| /* fixme, why read back then write? */ |
| ret = amlnf_dtb_read(dtb_ptr, aml_chip_dtb->dtbsize); |
| if (ret) { |
| printk("%s: read failed\n", __func__); |
| kfree(dtb_ptr); |
| return -EFAULT; |
| } |
| |
| ret = amlnf_dtb_save(dtb_ptr, (unsigned int)aml_chip_dtb->dtbsize); |
| if (ret) { |
| printk("%s: save failed\n", __func__); |
| kfree(dtb_ptr); |
| return -EFAULT; |
| } |
| |
| printk("dtb_store : OK #####\n"); |
| return count; |
| } |
| |
| static CLASS_ATTR(amlnf_dtb, S_IWUSR | S_IRUGO, dtb_show, dtb_store); |
| |
| int dtb_open(struct inode *node, struct file *file) |
| { |
| return 0; |
| } |
| |
| ssize_t dtb_read(struct file *file, |
| char __user *buf, |
| size_t count, |
| loff_t *ppos) |
| { |
| u8 *dtb_ptr = NULL; |
| struct nand_flash *flash = &aml_chip_dtb->flash; |
| ssize_t read_size = 0; |
| int ret = 0; |
| |
| if (*ppos == aml_chip_dtb->dtbsize) |
| return 0; |
| |
| if (*ppos >= aml_chip_dtb->dtbsize) { |
| printk("%s:data access out of space!\n", __func__); |
| return -EFAULT; |
| } |
| |
| dtb_ptr = vmalloc(aml_chip_dtb->dtbsize + flash->pagesize); |
| if (dtb_ptr == NULL) { |
| printk("%s: malloc buf failed\n", __func__); |
| return -ENOMEM; |
| } |
| |
| amlnand_get_device(aml_chip_dtb, CHIP_READING); |
| ret = amlnf_dtb_read((u8 *)dtb_ptr, aml_chip_dtb->dtbsize); |
| if (ret) { |
| printk("%s: read failed:%d\n", __func__, ret); |
| ret = -EFAULT; |
| goto exit; |
| } |
| |
| if ((*ppos + count) > aml_chip_dtb->dtbsize) |
| read_size = aml_chip_dtb->dtbsize - *ppos; |
| else |
| read_size = count; |
| |
| ret = copy_to_user(buf, (dtb_ptr + *ppos), read_size); |
| *ppos += read_size; |
| exit: |
| amlnand_release_device(aml_chip_dtb); |
| /* kfree(dtb_ptr); */ |
| vfree(dtb_ptr); |
| return read_size; |
| } |
| |
| ssize_t dtb_write(struct file *file, |
| const char __user *buf, |
| size_t count, loff_t *ppos) |
| { |
| u8 *dtb_ptr = NULL; |
| ssize_t write_size = 0; |
| struct nand_flash *flash = &aml_chip_dtb->flash; |
| int ret = 0; |
| |
| if (*ppos == aml_chip_dtb->dtbsize) |
| return 0; |
| |
| if (*ppos >= aml_chip_dtb->dtbsize) { |
| printk("%s: data access out of space!\n", __func__); |
| return -EFAULT; |
| } |
| |
| dtb_ptr = vmalloc(aml_chip_dtb->dtbsize + flash->pagesize); |
| if (dtb_ptr == NULL) { |
| printk("%s: malloc buf failed\n", __func__); |
| return -ENOMEM; |
| } |
| amlnand_get_device(aml_chip_dtb, CHIP_WRITING); |
| |
| ret = amlnf_dtb_read((u8 *)dtb_ptr, aml_chip_dtb->dtbsize); |
| if (ret) { |
| printk("%s: read failed\n", __func__); |
| ret = -EFAULT; |
| goto exit; |
| } |
| |
| if ((*ppos + count) > aml_chip_dtb->dtbsize) |
| write_size = aml_chip_dtb->dtbsize - *ppos; |
| else |
| write_size = count; |
| |
| ret = copy_from_user((dtb_ptr + *ppos), buf, write_size); |
| |
| ret = amlnf_dtb_save(dtb_ptr, (unsigned int)aml_chip_dtb->dtbsize); |
| if (ret) { |
| printk("%s: read failed\n", __func__); |
| ret = -EFAULT; |
| goto exit; |
| } |
| |
| *ppos += write_size; |
| exit: |
| amlnand_release_device(aml_chip_dtb); |
| /* kfree(dtb_ptr); */ |
| vfree(dtb_ptr); |
| return write_size; |
| } |
| |
| long dtb_ioctl(struct file *file, u32 cmd, u32 args) |
| { |
| return 0; |
| } |
| |
| static const struct file_operations dtb_ops = { |
| .open = dtb_open, |
| .read = dtb_read, |
| .write = dtb_write, |
| .unlocked_ioctl = dtb_ioctl, |
| }; |
| #endif /* AML_NAND_UBOOT */ |
| |
| int amlnf_dtb_init(struct aml_nand_chip *aml_chip) |
| { |
| int ret = 0; |
| u8 *dtb_buf = NULL; |
| aml_chip_dtb = aml_chip; |
| |
| //aml_chip->dtbsize = 0x20000; //fixit |
| |
| dtb_buf = kzalloc(aml_chip_dtb->dtbsize, GFP_KERNEL); |
| if (dtb_buf == NULL) { |
| printk("nand malloc for dtb_buf failed\n"); |
| ret = -1; |
| goto exit_err; |
| } |
| |
| memset(dtb_buf, 0x0, aml_chip_dtb->dtbsize); |
| #if 0 //fixit |
| printk("nand dtb: probe.\n"); |
| ret = amlnand_info_init(aml_chip, |
| (u8 *)&(aml_chip->amlnf_dtb), |
| dtb_buf, |
| (u8 *)DTD_INFO_HEAD_MAGIC, |
| aml_chip_dtb->dtbsize); |
| if (ret < 0) { |
| printk("%s failed\n", __func__); |
| ret = -1; |
| goto exit_err; |
| } |
| #endif |
| |
| #ifndef AML_NAND_UBOOT |
| printk("%s: register dtb cdev\n", __func__); |
| ret = alloc_chrdev_region(&amlnf_dtb_no, 0, 1, DTB_NAME); |
| if (ret < 0) { |
| printk("%s alloc dtb dev_t number failed\n", __func__); |
| ret = -1; |
| goto exit_err; |
| } |
| |
| cdev_init(&amlnf_dtb, &dtb_ops); |
| amlnf_dtb.owner = THIS_MODULE; |
| ret = cdev_add(&amlnf_dtb, amlnf_dtb_no, 1); |
| if (ret) { |
| printk("%s amlnf dtd dev add failed\n", __func__); |
| ret = -1; |
| goto exit_err1; |
| } |
| |
| amlnf_dtb_class = class_create(THIS_MODULE, DTB_NAME); |
| if (IS_ERR(amlnf_dtb_class)) { |
| printk("%s: amlnf dtd class add failed\n", __func__); |
| ret = -1; |
| goto exit_err2; |
| } |
| |
| ret = class_create_file(amlnf_dtb_class, &class_attr_env); |
| if (ret) { |
| printk("%s dev add failed\n", __func__); |
| ret = -1; |
| goto exit_err2; |
| } |
| |
| dtb_dev = device_create(amlnf_dtb_class, |
| NULL, |
| amlnf_dtb_no, |
| NULL, |
| DTB_NAME); |
| if (IS_ERR(dtb_dev)) { |
| printk("%s: device_create failed\n", __func__); |
| ret = -1; |
| goto exit_err3; |
| } |
| |
| printk("%s: register dtd cdev OK\n", __func__); |
| |
| kfree(dtb_buf); |
| dtb_buf = NULL; |
| |
| return ret; |
| |
| exit_err3: |
| class_remove_file(amlnf_dtb_class, &class_attr_env); |
| class_destroy(amlnf_dtb_class); |
| exit_err2: |
| cdev_del(&amlnf_dtb); |
| exit_err1: |
| unregister_chrdev_region(amlnf_dtb_no, 1); |
| |
| #endif /* AML_NAND_UBOOT */ |
| exit_err: |
| if (dtb_buf) { |
| kfree(dtb_buf); |
| dtb_buf = NULL; |
| } |
| return ret; |
| } |
| |
| int amlnf_dtb_init_partitions(struct aml_nand_chip *aml_chip) |
| { |
| int ret = 0; |
| u8 *dtb_buf = NULL; |
| aml_chip_dtb = aml_chip; |
| |
| dtb_buf = kzalloc(aml_chip_dtb->dtbsize, GFP_KERNEL); |
| if (dtb_buf == NULL) { |
| printk("nand malloc for dtb_buf failed\n"); |
| ret = -1; |
| goto exit_err; |
| } |
| memset(dtb_buf, 0x0, aml_chip_dtb->dtbsize); |
| #if 0 //fixit |
| printk("%s: probe. \n", __func__); |
| ret = amlnand_info_init(aml_chip, |
| (u8 *)&(aml_chip->amlnf_dtb), |
| dtb_buf, |
| (u8 *)DTD_INFO_HEAD_MAGIC, |
| aml_chip_dtb->dtbsize); |
| if (ret < 0) { |
| printk("%s failed\n", __func__); |
| ret = -1; |
| goto exit_err; |
| } |
| #endif |
| /*parse partitions table */ |
| ret = get_partition_from_dts(dtb_buf); |
| if (ret) { |
| printk("%s get_partition_from_dts failed\n", __func__); |
| } |
| exit_err: |
| if (dtb_buf) { |
| kfree(dtb_buf); |
| dtb_buf = NULL; |
| } |
| return ret; |
| } |
| |
| |
| /***************************************************************************** |
| Prototype : amlnf_detect_dtb_partitions |
| Description : if 'dtb, write the bad block, we can't erase this block. |
| So we have to find the 'dtb' address in flash and flag it. |
| Input : struct amlnand_chip *aml_chip |
| Output : NULL |
| Return Value : ret |
| Called By : amlnand_get_partition_table |
| |
| History : |
| 1.Date : 2015/10/15 |
| Author : Fly Mo |
| Modification : Created function |
| |
| *****************************************************************************/ |
| int amlnf_detect_dtb_partitions(struct aml_nand_chip *aml_chip) |
| { |
| #if 0 //fixit |
| int ret = 0; |
| u8 *dtb_buf = NULL; |
| aml_chip_dtb = aml_chip; |
| struct nand_arg_info test_amlnf_dtb; |
| memset(&test_amlnf_dtb, 0, sizeof(test_amlnf_dtb)); |
| dtb_erase_blk = -1; |
| dtb_buf = aml_nand_malloc(aml_chip_dtb->dtbsize); |
| if (dtb_buf == NULL) { |
| printk("nand malloc for dtb_buf failed\n"); |
| ret = -1; |
| goto exit_err; |
| } |
| memset(dtb_buf, 0x0, aml_chip_dtb->dtbsize); |
| test_amlnf_dtb.arg_type = aml_chip->amlnf_dtb.arg_type; |
| ret = amlnand_info_init(aml_chip, |
| (u8 *)&(test_amlnf_dtb), |
| dtb_buf, |
| (u8 *)DTD_INFO_HEAD_MAGIC, |
| aml_chip_dtb->dtbsize); |
| if (test_amlnf_dtb.arg_valid == 1) { |
| dtb_erase_blk = test_amlnf_dtb.valid_blk_addr; |
| } |
| printk("%s:dtb_erase_blk:%d\n", __func__,dtb_erase_blk); |
| exit_err: |
| if (dtb_buf) { |
| kfree(dtb_buf); |
| dtb_buf = NULL; |
| } |
| return ret; |
| #else |
| return 0; |
| #endif |
| } |
| |
| /* for blank positions... */ |
| int aml_nand_update_dtb(struct aml_nand_chip *aml_chip, char *dtb_ptr) |
| { |
| #if 0 //fixit |
| int ret = 0; |
| char malloc_flag = 0; |
| char *dtb_buf = NULL; |
| |
| if (dtb_buf == NULL) { |
| dtb_buf = kzalloc(aml_chip_dtb->dtbsize, GFP_KERNEL); |
| malloc_flag = 1; |
| if (dtb_buf == NULL) |
| return -ENOMEM; |
| memset(dtb_buf, 0, aml_chip_dtb->dtbsize); |
| ret = amlnand_read_info_by_name(aml_chip, |
| (u8 *)&(aml_chip->amlnf_dtb), |
| (u8 *)dtb_buf, |
| (u8 *)DTD_INFO_HEAD_MAGIC, |
| aml_chip_dtb->dtbsize); |
| if (ret) { |
| printk("read dtb error,%s\n", __func__); |
| ret = -EFAULT; |
| goto exit; |
| } |
| } else |
| dtb_buf = dtb_ptr; |
| |
| ret = amlnand_save_info_by_name(aml_chip, |
| (u8 *)&(aml_chip->amlnf_dtb), |
| (u8 *)dtb_buf, |
| (u8 *)DTD_INFO_HEAD_MAGIC, |
| aml_chip_dtb->dtbsize); |
| if (ret < 0) |
| printk("%s: update failed\n", __func__); |
| exit: |
| if (malloc_flag && (dtb_buf)) { |
| kfree(dtb_buf); |
| dtb_buf = NULL; |
| } |
| #endif |
| return 0; |
| } |
| |
| #endif |
