120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
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/*
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* Copyright (c) Hunan Goke,Chengdu Goke,Shandong Goke. 2021. All rights reserved.
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*/
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#include "fmc100_os.h"
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#include <common.h>
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/*****************************************************************************/
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static struct fmc_host fmc100_host = {
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.chip = NULL,
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};
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/*****************************************************************************/
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static void fmc100_driver_probe(struct nand_chip *chip, unsigned char cs)
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{
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int ret = 0;
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struct fmc_host *host = &fmc100_host;
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fmc_pr(BT_DBG, "\t*-Start SPI Nand flash driver probe\n");
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if (!host->chip) {
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/* Fmc ip version check */
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if (fmc_ip_ver_check())
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db_bug("Error: fmc IP version unknown!\n");
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/* Fmc current SPI device type check */
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fmc_dev_type_switch(FLASH_TYPE_SPI_NAND);
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/* Fmc SPI nand init */
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memset((char *)host, 0, sizeof(struct fmc_host));
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ret = fmc100_host_init(host);
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if (ret) {
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db_msg("Error: Host init failed, result: %d\n", ret);
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/* Change SPI device type to default */
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fmc_dev_type_switch(FLASH_TYPE_DEFAULT);
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return;
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}
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} else {
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fmc_pr(BT_DBG, "\t*-SPI Nand host is initialized.\n");
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}
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host->cmd_op.cs = cs;
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host->chip = chip;
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fmc100_spi_nand_init(host);
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fmc_pr(BT_DBG, "\t*-End SPI Nand flash driver probe.\n");
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return;
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}
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/*****************************************************************************/
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static int fmc100_spi_nand_pre_probe(struct nand_chip *chip)
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{
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uint8_t nand_maf_id;
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struct mtd_info *mtd = nand_to_mtd(chip);
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struct fmc_host *host = chip->priv;
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/* Reset the chip first */
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host->send_cmd_reset(host);
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chip->dev_ready(mtd);
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/* Check the ID */
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host->offset = 0;
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memset((unsigned char *)(chip->IO_ADDR_R), 0, 0x10);
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host->send_cmd_readid(host);
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nand_maf_id = readb(chip->IO_ADDR_R);
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if (nand_maf_id == 0x00 || nand_maf_id == 0xff) {
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printf("Cannot found a valid SPI Nand Device\n");
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return 1;
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}
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return 0;
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}
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/*****************************************************************************/
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int board_nand_init(struct nand_chip *chip)
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{
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unsigned char chip_num = CONFIG_SPI_NAND_MAX_CHIP_NUM;
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static unsigned char cs = 0;
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unsigned char *fmc_cs = NULL;
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for (cs = 0; chip_num && (cs < CONFIG_FMC_MAX_CS_NUM); cs++) {
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fmc_cs = get_cs_number(cs);
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if (*fmc_cs) {
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fmc_pr(BT_DBG, "\t\t*-Current CS(%d) is occupied.\n",
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cs);
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continue;
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}
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fmc100_driver_probe(chip, cs);
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chip_num--;
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}
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if (chip_num)
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return 1;
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if (fmc100_spi_nand_pre_probe(chip))
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return 1;
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return 0;
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}
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/*****************************************************************************/
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static int fmc100_spi_nand_get_ecctype(void)
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{
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struct fmc_host *host = &fmc100_host;
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if (!host->chip) {
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printf("SPI Nand flash uninitialized.\n");
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return -1;
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}
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return match_ecc_type_to_yaffs(fmc100_host.ecctype);
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}
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/*****************************************************************************/
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int nand_get_ecctype(void)
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{
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return fmc100_spi_nand_get_ecctype();
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}
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