TQ210 realizes nandflash transplantation

star_66666

TQ210 realizes nandflash transplantation [Copy link]

Transplanting NAND FLASH is more troublesome, and many changes need to be made. The following is a brief explanation. First, in u-boot-2014.04\include\configs\smdkv210.h, change #define CONFIG_ENV_IS_IN_ONENAND 1 to #define CONFIG_ENV_IS_IN_NAND. Add #define CONFIG_SYS_MAX_NAND_DEVICE 1 #define CONFIG_SYS_NAND_BASE 0xB0E00000 #define CONFIG_NAND_S5PV210. Change #define CONFIG_ENV_IS_IN_ONENAND 1 to #define CONFIG_ENV_IS_IN_NAND. Copy s3c2410_nand.c in u-boot-2014.04\drivers\mtd\nand and rename it to s5pv210_nand.c. The content inside needs to be modified. Just refer to the changes of 2410. Just upload the code directly. There are too many changes. /* * (C) Copyright 2006 OpenMoko, Inc. * Author: Harald Welte <laforge@openmoko.org> * * SPDX-License-Identifier: GPL-2.0+ */ #include

#include
#include
#include

#define MP0_1CON  (*(volatile u32 *)0xE02002E0)
#define        MP0_3CON  (*(volatile u32 *)0xE0200320)
#define        MP0_6CON  (*(volatile u32 *)0xE0200380)

static void s5pv210_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
{
        struct nand_chip *chip = mtd->priv;
        struct s5pv210_nand *nand = (struct s5pv210_nand *)samsung_get_base_nand();
        debug("hwcontrol(): 0x%02x 0x%02x\n", cmd, ctrl);
        ulong IO_ADDR_W = (ulong)nand;
        if (ctrl & NAND_CTRL_CHANGE) {

                if (ctrl & NAND_CLE)               
                        IO_ADDR_W = IO_ADDR_W | 0x8;        /* Command Register  */
                else if (ctrl & NAND_ALE)
                        IO_ADDR_W = IO_ADDR_W | 0xC;        /* Address Register */

                chip->IO_ADDR_W = (void *)IO_ADDR_W;

                if (ctrl & NAND_NCE)        /* select */
                        writel(readl(&nand->nfcont) & ~(1 << 1), &nand->nfcont);
                else                                        /* deselect */
                        writel(readl(&nand->nfcont) | (1 << 1), &nand->nfcont);
        }

        if (cmd != NAND_CMD_NONE)
                writeb(cmd, chip->IO_ADDR_W);        
        else
                chip->IO_ADDR_W = &nand->nfdata;

}

static int s5pv210_dev_ready(struct mtd_info *mtd)
{
        struct s5pv210_nand *nand = (struct s5pv210_nand *)samsung_get_base_nand();
        debug("dev_ready\n");
        return readl(&nand->nfstat) & 0x01;
}


void s5pv210_nand_enable_hwecc(struct mtd_info *mtd, int mode)
{
        struct s5pv210_nand *nand = (struct s5pv210_nand *)samsung_get_base_nand();
        debug("s5pv210_nand_enable_hwecc(%p, %d)\n", mtd, mode);
        writel(readl(&nand->nfconf) | S3C2410_NFCONF_INITECC, &nand->nfconf);
}

static int s5pv210_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
                                      u_char *ecc_code)
{
        struct s5pv210_nand *nand = (struct s5pv210_nand *)samsung_get_base_nand();
        ecc_code[0] = readb(&nand->nfecc);
        ecc_code[1] = readb(&nand->nfecc + 1);
        ecc_code[2] = readb(&nand->nfecc + 2);
        debug("s5pv210_nand_calculate_hwecc(%p,): 0x%02x 0x%02x 0x%02x\n",
               mtd , ecc_code[0], ecc_code[1], ecc_code[2]);

        return 0;
}

static int s5pv210_nand_correct_data(struct mtd_info *mtd, u_char *dat,
                                     u_char *read_ecc, u_char *calc_ecc)
{
        if (read_ecc[0] == calc_ecc[0] &&
            read_ecc[1] == calc_ecc[1] &&
            read_ecc[2] == calc_ecc[2])
                return 0;

        printf("s5pv210_nand_correct_data: not implemented\n");
        return -1;
}
#endif


static void s5pv210_nand_select_chip(struct mtd_info *mtd,int ctl) { struct nand_chip *chip = mtd->priv; switch (ctl) { case -1: /* deselect the chip */ chip->cmd_ctrl(mtd, NAND_CMD_NONE, 0 | NAND_CTRL_CHANGE); break; case 0: / * Select the chip */ chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); break; default: BUG(); } } int board_nand_init(struct nand_chip *nand) { u32 cfg; struct s5pv210_nand *nand_reg = (struct s5pv210_nand *)(struct s5pv210_nand *)samsung_get_base_nand(); debug("board_nand_init()\n"); /* initialize hardware */ /* HCLK_PSYS=133MHz(7.5ns) */ cfg = (0x1 << 23) | /* Disable 1-bit and 4-bit ECC */ /* The following three timing parameters are slightly larger than the calculated values (I use Add 1), otherwise the reading and writing are unstable */ (0x3 << 12) | /* 7.5ns * 2 > 12ns tALS tCLS */ (0x2 << 8) | /* (1+1) * 7.5ns > 12ns ( tWP) */ (0x1 << 4) | /* (0+1) * 7.5 > 5ns (tCLH/tALH) */ (0x0 << 3) | /* SLC NAND Flash */ (0x0 << 2) | /* 2KBytes/Page */ (0x1 << 1); /* 5 address cycle */ writel(cfg, &nand_reg->nfconf); writel((0x1 << 1) | (0x1 << 0), &nand_reg->nfcont); /* Disable chip select and Enable NAND Flash Controller */ /* Config GPIO */ MP0_1CON &= ~(0xFFFF << 8); MP0_1CON |= (0x3333 << 8); MP0_3CON = 0x22222222; MP0_6CON = 0x22222222; /* initialize nand_chip data structure */ nand->IO_ADDR_R = (void *)&nand_reg->nfdata; nand->IO_ADDR_W = (void *)&nand_reg->nfdata; nand-> select_chip = s5pv210_nand_select_chip; /* read_buf and write_buf are default */ /* read_byte and write_byte are default */ /* hwcontrol always must be implemented */ nand->cmd_ctrl = s5pv210_hwcontrol; nand->dev_ready = s5pv210_dev_ready; #ifdef CONFIG_S3C2410_NAND_HWECC nand->ecc.hwctl = s5pv210_nand_enable_hwecc; nand->ecc.calculate = s5pv210_nand_calculate_ecc; nand->ecc.correct = s5pv210_nand_correct_data; nand->ecc.mode = NAND_ECC_HW; nand->ecc.size = CONFIG_SYS_NAND_ECCSIZE; nand->ecc.bytes = CONFIG_SYS_NAND_ECCBYTES; nand->ecc.strength = 1; #else nand->ecc.mode = NAND_ECC_SOFT; #endif #ifdef CONFIG_S3C2410_NAND_BBT nand->bbt_options |= NAND_BBT_USE_FLASH; #endif debug("end of nand_init\n"); return 0; } At the same time, in the Makefile under the directory Add obj-$(CONFIG_NAND_S5PV210) += s5pv210_nand.o in u-boot-2014.04-5\arch\arm\include\asm\arch-s5pc1xx\cup.h, add #define S5PV210_NAND_BASE 0xB0E00000 SAMSUNG_BASE(nand, NAND_BASE) Compile and download, as shown in the figure There is a warning, use the command saveenv to save the environment variable to NAND, and there will be no such warning next time you start The result of the restart is That's it for today. This content is created by EEWORLD forum user star_66666. If you need to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source