| /* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ |
| /* |
| * drivers/mtd/nand/amlogic_mtd/aml_dtb.c |
| * |
| * Copyright (C) 2020 Amlogic, Inc. All rights reserved. |
| * |
| */ |
| |
| #include <common.h> |
| #include <environment.h> |
| #include <nand.h> |
| #include <asm/io.h> |
| #include <malloc.h> |
| #include "aml_mtd.h" |
| |
| 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) |
| { |
| struct mtd_info *mtd = &aml_chip_dtb->mtd; |
| 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; |
| } |
| dtb_buf = malloc(aml_chip_dtb->dtbsize); |
| 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); |
| aml_nand_ext_save_rsv_info(mtd, |
| aml_chip_dtb->aml_nanddtb_info, dtb_buf); |
| exit_err: |
| free(dtb_buf); |
| return ret; |
| } |
| |
| int amlnf_dtb_erase(void) |
| { |
| int ret = 0; |
| struct mtd_info *mtd = &aml_chip_dtb->mtd; |
| |
| printk("%s: ####\n", __func__); |
| if (aml_chip_dtb == NULL) { |
| printk("%s amlnf not ready yet!\n", __func__); |
| return -1; |
| } |
| ret = aml_nand_ext_erase_rsv_info(mtd, aml_chip_dtb->aml_nanddtb_info); |
| if (ret) { |
| printk("erase dtb error,%s\n", __func__); |
| ret = -EFAULT; |
| } |
| |
| return ret; |
| } |
| |
| int amlnf_dtb_read(u8 *buf, int len) |
| { |
| struct mtd_info *mtd = &aml_chip_dtb->mtd; |
| 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; |
| } |
| if (aml_chip_dtb == NULL) { |
| memset(buf, 0x0, len); |
| printk("%s amlnf not ready yet!\n", __func__); |
| return 0; |
| } |
| dtb_buf = malloc(aml_chip_dtb->dtbsize); |
| if (dtb_buf == NULL) { |
| printk("%s: malloc failed\n", __func__); |
| ret = -1; |
| goto exit_err; |
| } |
| memset(dtb_buf, 0, aml_chip_dtb->dtbsize); |
| ret = aml_nand_ext_read_rsv_info(mtd, |
| aml_chip_dtb->aml_nanddtb_info, 0, dtb_buf); |
| memcpy(buf, dtb_buf, len); |
| exit_err: |
| free(dtb_buf); |
| return ret; |
| } |
| |
| int amlnf_dtb_init(struct aml_nand_chip *aml_chip) |
| { |
| aml_chip_dtb = aml_chip; |
| return 0; |
| } |
| |
| |