help uboot porting SD4

lixuhui112 — Wed, 22 Jun 2016 07:24:29 GMT

In my board only have sd4 look at pg1

pg1

the code such as :

configs file :

#define CONFIG_FSL_ESDHC

#define CONFIG_FSL_USDHC

#define CONFIG_SYS_FSL_ESDHC_ADDR USDHC4_BASE_ADDR

#define CONFIG_MMCROOT

"/dev/mmcblk3p2" /* SDHC4 */

#define CONFIG_SYS_FSL_USDHC_NUM 3

#define CONFIG_SYS_MMC_ENV_DEV	2 /* SDHC4 */
#define CONFIG_SYS_MMC_ENV_PART	0	/* user partition */

borad .c

tatic iomux_v3_cfg_t const usdhc4_pads[] = {

MX6_PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

MX6_PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),

/* CD */

MX6_PAD_SD1_DAT0__GPIO1_IO16 | MUX_PAD_CTRL(NO_PAD_CTRL),

};

#ifdef CONFIG_FSL_ESDHC

struct fsl_esdhc_cfg usdhc_cfg[1] = {

// {USDHC2_BASE_ADDR},

// {USDHC3_BASE_ADDR},

{USDHC4_BASE_ADDR},

};

int mmc_get_env_devno(void)

{

u32 soc_sbmr = readl(SRC_BASE_ADDR + 0x4);

u32 dev_no;

u32 bootsel;

bootsel = (soc_sbmr & 0x000000FF) >> 6 ;

/* If not boot from sd/mmc, use default value */

if (bootsel != 1)

return CONFIG_SYS_MMC_ENV_DEV;

/* BOOT_CFG2[3] and BOOT_CFG2[4] */

dev_no = (soc_sbmr & 0x00001800) >> 11;

/* need ubstract 1 to map to the mmc device id

* see the comments in board_mmc_init function

dev_no--;

return dev_no;

}

int mmc_map_to_kernel_blk(int dev_no)

{

return dev_no + 1;

}

//#define USDHC2_CD_GPIO IMX_GPIO_NR(2, 2)

#define USDHC4_CD_GPIO IMX_GPIO_NR(1, 16)

int board_mmc_getcd(struct mmc *mmc)

{

struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;

int ret = 0;

switch (cfg->esdhc_base) {

// case USDHC2_BASE_ADDR:

// ret = !gpio_get_value(USDHC2_CD_GPIO);

//break;

//case USDHC3_BASE_ADDR:

//ret = !gpio_get_value(USDHC3_CD_GPIO);

// break;

case USDHC4_BASE_ADDR:

ret = !gpio_get_value(USDHC4_CD_GPIO);

// ret = 1; /* eMMC/uSDHC4 is always present */

break;

}

return ret;

}

int board_mmc_init(bd_t *bis)

{

#ifndef CONFIG_SPL_BUILD

int ret;

int i;

* According to the board_mmc_init() the following map is done:

* (U-boot device node) (Physical Port)

* mmc0 SD2

* mmc1 SD3

* mmc2 SD4

for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {

switch :smileyinfo: {

// case 0:

// imx_iomux_v3_setup_multiple_pads(

// usdhc2_pads, ARRAY_SIZE(usdhc2_pads));

// gpio_direction_input(USDHC2_CD_GPIO);

// usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);

// break;

// case 1:

// imx_iomux_v3_setup_multiple_pads(

// usdhc3_pads, ARRAY_SIZE(usdhc3_pads));

// gpio_direction_input(USDHC3_CD_GPIO);

// usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);

// break;

case 2:

imx_iomux_v3_setup_multiple_pads(

usdhc4_pads, ARRAY_SIZE(usdhc4_pads));

gpio_direction_input(USDHC4_CD_GPIO);

usdhc_cfg[2].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);

break;

default:

printf("Warning: you configured more USDHC controllers"

"(%d) then supported by the board (%d)\n",

i + 1, CONFIG_SYS_FSL_USDHC_NUM);

return -EINVAL;

}

ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);

if (ret)

return ret;

}

return 0;

#else

struct src *psrc = (struct src *)SRC_BASE_ADDR;

unsigned reg = readl(&psrc->sbmr1) >> 11;

* Upon reading BOOT_CFG register the following map is done:

* Bit 11 and 12 of BOOT_CFG register can determine the current

* mmc port

* 0x1 SD1

* 0x2 SD2

* 0x3 SD4

switch (reg & 0x3) {

// case 0x1:

// imx_iomux_v3_setup_multiple_pads(

// usdhc2_pads, ARRAY_SIZE(usdhc2_pads));

// usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;

// usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);

// gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;

// break;

// case 0x2:

// imx_iomux_v3_setup_multiple_pads(

// usdhc3_pads, ARRAY_SIZE(usdhc3_pads));

// usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR;

// usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);

// gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;

// break;

case 0x3:

imx_iomux_v3_setup_multiple_pads(

usdhc4_pads, ARRAY_SIZE(usdhc4_pads));

usdhc_cfg[0].esdhc_base = USDHC4_BASE_ADDR;

usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);

gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;

break;

}

return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);

#endif

}

#endif

int check_mmc_autodetect(void)

{

char *autodetect_str = getenv("mmcautodetect");

if ((autodetect_str != NULL) &&

(strcmp(autodetect_str, "yes") == 0)) {

return 1;

}

return 0;

}

void board_late_mmc_env_init(void)

{

char cmd[32];

char mmcblk[32];

u32 dev_no = mmc_get_env_devno();

if (!check_mmc_autodetect())

return;

setenv_ulong("mmcdev", dev_no);

/* Set mmcblk env */

sprintf(mmcblk, "/dev/mmcblk%dp2 rootwait rw",

mmc_map_to_kernel_blk(dev_no));

setenv("mmcroot", mmcblk);

sprintf(cmd, "mmc dev %d", dev_no);

run_command(cmd, 0);

}

#ifdef CONFIG_CMD_BMODE

static const struct boot_mode board_boot_modes[] = {

/* 4 bit bus width */

{"sd4", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},

{NULL, 0},

};

#endif

int board_late_init(void)

{

#ifdef CONFIG_CMD_BMODE

add_board_boot_modes(board_boot_modes);

#endif

#ifdef CONFIG_ENV_IS_IN_MMC

board_late_mmc_env_init();

#endif

return 0;

}

build u-boot.imx ,but i can not find sd4,as :

U-Boot 2015.04-14468-gd7d7c43-dirty (Jun 22 2016 - 15:02:33)

CPU: Freescale i.MX6Q rev1.5 at 792 MHz

CPU: Temperature 38 C

Reset cause: POR

Board: MX6Q-Sabreauto revA

I2C: ready

DRAM: 1 GiB

PMIC: PFUZE100 ID=0x10

MMC: Warning: you configured more USDHC controllers(1) then supported by the board (3)

FSL_SDHC: 0

MMC Device 2 not found

No MMC card found

Using default environment

In: serial

Out: serial

Err: serial

MMC Device 2 not found

no mmc device at slot 2

Net: FEC [PRIME]

Error: FEC address not set.

Boot from USB for mfgtools

Use default environment for mfgtools

Run bootcmd_mfg: run mfgtool_args;bootz ${loadaddr} ${initrd_addr} ${fdt_addr};

Hit any key to stop autoboot: 0

Bad Linux ARM zImage magic!

Thanks

Re: help uboot porting SD4

igorpadykov — Wed, 22 Jun 2016 11:23:52 GMT

Hi xuhui

please refer to attached Porting Guide

Chapter 4 Adding Support for SDHC

Also SD4 is supported for SabreSD board (emmc) and

one can look at uboot sources in

uboot-imx.git - Freescale i.MX u-boot Tree

Best regards

igor

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Re: help uboot porting SD4

lixuhui112 — Thu, 23 Jun 2016 01:13:00 GMT

yes I look the Porting Guide and you can look my code ,it is Modified in accordance with mx6sabresd.c ,but it is not ok

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help uboot porting SD4

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Re: help uboot porting SD4