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- /* SPDX-License-Identifier: GPL-2.0-or-later */
- /**
- ******************************************************************************
- * @file spi_flash.c
- * @author StarFive Technology
- * @version V1.0
- * @date 06/25/2020
- * @brief
- ******************************************************************************
- * @copy
- *
- * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
- * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
- * TIME. AS A RESULT, STARFIVE SHALL NOT BE HELD LIABLE FOR ANY
- * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
- * FROM THE CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
- * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
- *
- * COPYRIGHT 2020 Shanghai StarFive Technology Co., Ltd.
- */
- #include <comdef.h>
- #include "spi.h"
- #include "spi_flash.h"
- #include "spi_flash_internal.h"
- #include <cadence_qspi.h>
- static void spi_flash_addr(u32 addr, u8 *cmd)
- {
- /* cmd[0] is actual command */
- cmd[1] = (addr & 0x00FF0000) >> 16;
- cmd[2] = (addr & 0x0000FF00) >> 8;
- cmd[3] = (addr & 0x000000FF) >> 0;
- }
- static int spi_flash_read_write(struct spi_slave *spi,
- u8 *cmd, u32 cmd_len,
- u8 *data_out, u8 *data_in,
- u32 data_len)
- {
- unsigned long flags = SPI_XFER_BEGIN;
- int ret;
- if (data_len == 0)
- flags |= SPI_XFER_END;
- ret = spi_xfer(spi, cmd_len * 8, cmd, NULL, flags, SPI_DATAMODE_8);
- if (ret)
- {
- //uart_printf("SF: Failed to send command (%d bytes): %d\n",
- //cmd_len, ret);
- }
- else if (data_len != 0)
- {
- ret = spi_xfer(spi, data_len * 8, data_out, data_in, SPI_XFER_END, SPI_DATAMODE_8);
- }
- return ret;
- }
- int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, u32 len)
- {
- return spi_flash_cmd_read(spi, &cmd, 1, response, len);
- }
- int spi_flash_cmd_read(struct spi_slave *spi, u8 *cmd,
- u32 cmd_len, void *data, u32 data_len)
- {
- return spi_flash_read_write(spi, cmd, cmd_len, NULL, data, data_len);
- }
- int spi_flash_cmd_write(struct spi_slave *spi, u8 *cmd, u32 cmd_len,
- void *data, u32 data_len)
- {
- return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len);
- }
- int spi_flash_cmd_write_enable(struct spi_flash *flash)
- {
- return spi_flash_cmd(flash->spi, CMD_WRITE_ENABLE, (void*)NULL, 0);
- }
- int spi_flash_cmd_write_status_enable(struct spi_flash *flash)
- {
- return spi_flash_cmd(flash->spi, CMD_STATUS_ENABLE, (void*)NULL, 0);
- }
- int spi_flash_cmd_write_disable(struct spi_slave *spi)
- {
- return spi_flash_cmd(spi, CMD_WRITE_DISABLE, (void*)NULL, 0);
- }
- int spi_flash_cmd_read_status(struct spi_flash *flash, u8 *cmd, u32 cmd_len, u8 *status)
- {
- struct spi_slave *spi = flash->spi;
- int ret;
- ret = spi_xfer(spi, 8*cmd_len, cmd, NULL, SPI_XFER_BEGIN, SPI_DATAMODE_8);
- if (ret) {
- //uart_printf("SF: Failed to send command %x: %d\n", (unsigned int)cmd, ret);
- return ret;
- }
- ret = spi_xfer(spi, 8*1, NULL, status, SPI_XFER_END, SPI_DATAMODE_8);
- //uart_printf("status = 0x%x\r\n", status[0]);
- if (ret)
- return ret;
- return 0;
- }
- int spi_flash_cmd_poll_bit(struct spi_flash *flash, unsigned long timeout,
- u8 cmd, u8 poll_bit)
- {
- int ret;
- u8 status;
- u32 status_tmp = 0;
- u32 timebase_1 = 0;
- do {
- ret = spi_flash_cmd_read_status(flash, &cmd, 1, &status);
- //uart_printf("cmd = 0x%x, status = 0x%x\r\n", cmd, status);
- if (ret)
- return ret;
- if ((status & poll_bit) == 0)
- break;
- timebase_1++;//libo
- } while (timebase_1 < timeout);
- if ((status & poll_bit) == 0)
- return 0;
- /* Timed out */
- //uart_printf("SF: time out!\r\n");
- return -1;
- }
- int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout)
- {
- return spi_flash_cmd_poll_bit(flash, timeout,
- CMD_READ_STATUS, STATUS_WIP);
- }
- int spi_flash_cmd_poll_enable(struct spi_flash *flash, unsigned long timeout,
- u8 cmd, u32 poll_bit)
- {
- int ret;
- u8 status;
- u32 status_tmp = 0;
- u32 timebase_1 = 0;
- do {
- ret = spi_flash_cmd_read_status(flash, &cmd, 1, &status);
- if (ret)
- return ret;
- //uart_printf("read status = 0x%x\r\n", status);
- if ((status & poll_bit) == 1)
- break;
- timebase_1++;
- } while (timebase_1 < timeout);
- /* Timed out */
- //uart_printf("SF: time out!\r\n");
- return 0;
- }
- int spi_flash_cmd_status_poll_enable(struct spi_flash *flash, unsigned long timeout,
- u8 cmd, u32 poll_bit)
- {
- int ret;
- u8 status;
- u32 status_tmp = 0;
- u32 timebase_1 = 0;
- do {
- ret = spi_flash_cmd_read_status(flash, &cmd, 1, &status);
- if (ret)
- return ret;
- //uart_printf("read status = 0x%x\r\n", status);
- if ((status & poll_bit) == 0x2)
- break;
- timebase_1++;
- } while (timebase_1 < timeout);
- /* Timed out */
- //uart_printf("SF: time out!\r\n");
- return 0;
- }
- int spi_flash_cmd_wait_enable(struct spi_flash *flash, unsigned long timeout)
- {
- return spi_flash_cmd_status_poll_enable(flash, timeout,
- CMD_READ_STATUS, FLASH_ENABLE);
- }
- int spi_flash_write_status(struct spi_flash *flash, u8 *cmd, unsigned int cmd_len,void *data, unsigned int data_len)
- {
- int ret;
- ret = spi_flash_cmd_write_enable(flash);
- if (ret) {
- // uart_printf("SF: Unable to claim SPI bus\n");
- return ret;
- }
- ret = spi_flash_cmd_write(flash->spi, cmd, cmd_len, data, data_len);
- if (ret < 0) {
- //uart_printf("SF: write failed\n");
- return ret;
- }
- ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
- if (ret < 0) {
- //uart_printf("SF: wait ready failed\n");
- return ret;
- }
- ret = spi_flash_cmd_write_disable(flash->spi);
- if (ret < 0) {
- //uart_printf("SF: disable write failed\n");
- return ret;
- }
- return 0;
- }
- #ifdef ISP_BOARD
- int spi_flash_write_status_bit(struct spi_flash *flash, u8 status0, u8 bit0)
- {
- u8 status[2];
- int ret = 0;
- status[0] = CMD_WRITE_STATUS;
- status[1] = status0|bit0;
- spi_flash_write_status(flash, &status[0], 1, &status[1], 1);
- if (bit0)
- {
- ret &= spi_flash_cmd_poll_bit(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT, CMD_READ_STATUS, ~bit0);
- }
- return ret;
- delay(1000);
-
- return ret;
- }
- int spi_flash_protect(struct spi_flash *flash)
- {
- /* set PB=0 all can write */
- return spi_flash_write_status_bit(flash, 0x00, 0);
- }
- #else
- int spi_flash_write_status_bit(struct spi_flash *flash, u8 status1, u8 status2, u8 bit1, u8 bit2)
- {
- u8 status[3];
- int ret = 0;
- status[0] = CMD_WRITE_STATUS;
- status[1] = status1|bit1;
- status[2] = status2|bit2;
- spi_flash_write_status(flash, &status[0], 1, &status[1], 2);
- if (bit1)
- {
- ret &= spi_flash_cmd_poll_bit(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT, CMD_READ_STATUS, ~bit1);
- }
- if (bit2)
- {
- ret &= spi_flash_cmd_poll_bit(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT, CMD_READ_STATUS1, ~bit2);
- }
- return ret;
- delay(1000);
-
- return ret;
- }
- int spi_flash_protect(struct spi_flash *flash)
- {
- /* set PB=0 all can write */
- return spi_flash_write_status_bit(flash, 0x00, 0x00, 0, 0);
- }
- #endif
- int spi_flash_cmd_erase(struct spi_flash *flash, u8 erase_cmd,
- u32 offset, u32 len)
- {
- u32 start, end, erase_size;
- int ret;
- u8 cmd[4];
-
- //uart_printf("spi_flash_cmd_erase \r\n");
- switch(erase_cmd){
- case CMD_W25_SE:
- erase_size = flash->sector_size;
- break;
- case CMD_W25_BE_32:
- erase_size = flash->sector_size * 8;
- break;
- case CMD_W25_BE:
- erase_size = flash->block_size;
- break;
- default:
- erase_size = flash->sector_size;
- break;
- }
- if (offset % erase_size || len % erase_size) {
- //uart_printf("SF: Erase offset/length not multiple of erase size\n");
- return -1;
- }
- // spi_flash_cmd_write_status_enable(flash);
- spi_flash_protect(flash);
- cmd[0] = erase_cmd;
- start = offset;
- end = start + len;
- while (offset < end)
- {
- spi_flash_addr(offset, cmd);
- offset += erase_size;
- //uart_printf("SF: erase %x %x %x %x (%x)\n", cmd[0], cmd[1],
- // cmd[2], cmd[3], offset);
- ret = spi_flash_cmd_write_enable(flash);
- if (ret)
- goto out;
- //spi_flash_cmd_wait_enable(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
- ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), NULL, 0);
- if (ret)
- goto out;
- ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
- if (ret)
- goto out;
- ret = spi_flash_cmd_write_disable(flash->spi);
- if (ret)
- goto out;
- }
- //uart_printf("SF: Successfully erased %d bytes @ %x\n", len , start);
- out:
- return ret;
- }
- /* mode is 4, 32, 64*/
- int spi_flash_erase_mode(struct spi_flash *flash, u32 offset, u32 len, u32 mode)
- {
- int ret = 0;
- switch (mode)
- {
- case 4:
- ret = spi_flash_cmd_erase(flash, CMD_W25_SE, offset, len);
- break;
- case 32:
- ret = spi_flash_cmd_erase(flash, CMD_W25_BE_32, offset, len);
- break;
- case 64:
- ret = spi_flash_cmd_erase(flash, CMD_W25_BE, offset, len);
- break;
- default:
- ret = spi_flash_cmd_erase(flash, CMD_W25_BE, offset, len);
- break;
- }
- return ret;
- }
- int spi_flash_cmd_write_mode(struct spi_flash *flash, u32 offset,u32 len, void *buf, u32 mode)
- {
- struct spi_slave *spi = flash->spi;
- unsigned long byte_addr, page_size;
- u32 write_addr;
- u32 chunk_len, actual;
- int ret;
- u8 cmd[4];
- int write_data = 1;
- unsigned long flags = SPI_XFER_BEGIN;
- page_size = flash->page_size;
- switch (mode){
- case 1:
- cmd[0] = CMD_PAGE_PROGRAM;
- break;
- case 4:
- cmd[0] = CMD_PAGE_PROGRAM_QUAD;
- #ifdef ISP_BOARD
- spi_flash_write_status_bit(flash, 0x00, STATUS_QE);
- #else
- spi_flash_write_status_bit(flash, 0x00, 0x00, 0, STATUS_QE);
- #endif
- break;
- default:
- cmd[0] = CMD_PAGE_PROGRAM;
- break;
- }
- for (actual = 0; actual < len; actual += chunk_len)
- {
- write_addr = offset;
- byte_addr = offset % page_size;
- chunk_len = min(len - actual, page_size - byte_addr);
- spi_flash_addr(write_addr, cmd);
- ret = spi_flash_cmd_write_enable(flash);
- if (ret < 0) {
- //uart_printf("SF: enabling write failed\n");
- break;
- }
- spi_flash_cmd_wait_enable(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
- #if 1
- if (mode == 1)
- {
-
- ret = spi_flash_cmd_write(flash->spi, cmd, 4,
- (unsigned char*)buf + actual, chunk_len);
- if (ret < 0) {
- //uart_printf("SF: write failed\n");
- break;
- }
-
- }
- #endif
- if (mode == 4)
- {
- flags = SPI_XFER_BEGIN;
- if (chunk_len == 0)
- flags |= SPI_XFER_END;
- ret = spi_xfer(spi, 4 * 8, cmd, NULL, flags, SPI_DATAMODE_8);
- if (ret < 0)
- {
- //uart_printf("xfer failed\n");
- return ret;
- }
- else if (chunk_len != 0)
- {
- //qspi_mode_ctl(SPI4_DATEMODE_4);
- ret = spi_xfer(spi, chunk_len * 8, (unsigned char*)buf + actual, NULL, SPI_XFER_END, SPI_DATAMODE_8);
-
- }
- }
- //qspi_mode_ctl(SPI4_DATEMODE_0);
- ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
- if (ret < 0)
- {
- //uart_printf("SF: spi_flash_cmd_wait_ready failed\n");
- break;
- }
- ret = spi_flash_cmd_write_disable(flash->spi);
- if (ret < 0)
- {
- //uart_printf("SF: disable write failed\n");
- break;
- }
-
- offset += chunk_len;
- //uart_printf("SF: program %s %d bytes @ %d\n", ret ? "failure" : "success", len, offset);
- }
- return ret;
- }
- int spi_flash_read_common(struct spi_flash *flash, u8 *cmd,
- u32 cmd_len, void *data, u32 data_len)
- {
- struct spi_slave *spi = flash->spi;
- int ret;
- ret = spi_flash_cmd_read(spi, cmd, cmd_len, data, data_len);
- return ret;
- }
- int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset,
- u32 len, void *data, u32 mode)
- {
- u8 cmd[5];
- cmd[0] = CMD_READ_ARRAY_FAST;
- spi_flash_addr(offset, cmd);
- cmd[4] = 0x00;
- return spi_flash_read_common(flash, cmd, sizeof(cmd), data, len);
- }
- int spi_flash_read_mode(struct spi_flash *flash, u32 offset,
- u32 len, void *data, u32 mode)
- {
- struct spi_slave *spi = flash->spi;
- u8 cmd[5];
- int ret;
- int write_data = 0;
- u8 status[2] = {2};
- int i = 0;
- switch (mode)
- {
- case 1:
- cmd[0] = CMD_READ_ARRAY_FAST;
- break;
- case 2:
- cmd[0] = CMD_READ_ARRAY_DUAL;
- break;
- case 4:
- #ifdef ISP_BOARD
- cmd[0] = CMD_READ_ARRAY_LEGACY;
- //spi_flash_cmd_write_reg_mode(flash, flash_reg_offset, 1, flash_reg);
- //flash_reg[0] = 0;
- //spi_flash_cmd_write_reg_mode(flash, flash_reg_offset, 1, flash_reg);
- //spi_flash_read_reg_mode(flash, flash_reg_offset, 1, flash_reg);
- #else
- cmd[0] = CMD_READ_ARRAY_QUAD;
- spi_flash_write_status_bit(flash, 0x00, 0x00, 0, STATUS_QE);
- #endif
- break;
- default:
- cmd[0] = CMD_READ_ARRAY_FAST;
- break;
- }
- //spi_flash_cmd_poll_bit(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT, CMD_READ_STATUS1, ~STATUS_QE);
-
- spi_flash_addr(offset, cmd);
- cmd[4] = 0x00;
- ret = spi_xfer(spi, 5*8, cmd, NULL, SPI_XFER_BEGIN, SPI_DATAMODE_8);
- if (ret < 0)
- {
- //uart_printf("xfer failed\n");
- return ret;
- }
- ret = spi_xfer(spi, len*8, NULL, data, SPI_XFER_END, SPI_DATAMODE_8);
- if (ret < 0)
- {
- //uart_printf("xfer failed\n");
- return ret;
- }
- return 0;
- }
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