mounting SD Card on uClinux

Could give me you *.config of uclinux and your quartus project?

thx for u help!

MSN: maojunjie@sina.com

Do you use a NEEK board ?

I loaded the Quartus Design from the appropriate NiosWiki page.

Which .config file are you talking about. There are many of them.

-Michael

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ok, now it's officialy closed!

I just needed to format my sd card using mkfs.vfat command

or through windows :S

anyway, thanks for all your help and support! :D

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Don't close yet, I have a question on mouting the SD card too. I am sorry that I use ColdFire but seems people here are familiar with uClinux.

I can't even see anything that the system is probing the sd card. I use QSPI from the coldfire and I choosed the MMC/SD/SDIO and used the MMC over spi. I can see the block devices in dev, but can't mount them with "mounting /dev/mmcblk0p1 on /mnt/sd failed: no such device or address" message. Whatelse do you need for the os to probe sd card on spi when boot?

Some one mentioned modprobe, how to configure that into uClinux?

It seems that I need to change some source files in C to let the kernel probe the SD card using spi, right? Thanks!

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ok, here's an update

it appears that there's a BIG difference between

[*] and <M> (my bad;) )

so the good news are that it worked only when I selected my options as

[*]

the bad new are... well... when I use

mount -t vfat /dev/mmcblk0 /mnt

I get Invalid argument error

any ideas?

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Hi,

I have the same situation where if i set the driver for "MMC/SD card support" as a module "[M]" the mounts do not work but if i just enable it as [*] it does. I need this feature to be a module so i would appreciate if anybody could point me in the right direction to solve this.

I played with the settings of "Enable loadable module support" but so far no luck.

I am using "FPS-Tech SD Host" and i set the following:

Device Drivers -->

(if i make these settings [*] it works...)

[M] MMC/SD card support --->

[M] MMC block device driver

[ ] Use bounce buffer for simple hosts

[ ] SDIO UART/GPS class support

[ ] MMC host test driver

*** MMC/SD Host Controller Drivers ***

[M] NIOS SD/SDIO/MMC Host

File systems --->

[*] Ext3 journalling file system support

DOS/FAT/NT Filesystems --->

[*] VFAT (Windows-95) fs support

(437) Default codepage for FAT

(iso8859-1) Default iocharset for FAT

-*- Native language support --->

[*] Codepage 437 (United States, Canada)

[*] NLS ISO 8859-1 (Latin 1; Western European Languages)

Thanks in advance for your help

I am having a similar problem using the SPI(3-wire) IP core and uClinux. I am using DE2-115 board and tried with 4 different cards (nothing changed), also same output when using no card at all. I am using "nios2"-branch (uClinux 3.7.0+), but have tried with "v3.3-nios2 -> v3.6-nios2" with same results.

mmc_spi spi32766.0: setup mode 0, 8 bits/w, 400000 Hz max --> 0
mmc0: req done (CMD58): 0: 00000000 00000000 00000000 00000000
mmc0: host doesn't support card's voltages
mmc0: error -22 whilst initialising SD card

My dts is configured as follows:

                mmc_spi: spi <at> 0x10003420 {
                        compatible = "ALTR,spi-12.0", "ALTR,spi-1.0";
                        reg = < 0x10003420 0x00000020 >;
                        interrupt-parent = < &cpu >;
                        interrupts = < 2 >;
                        mmc-slot <at> 0 {
                                compatible = "mmc-spi-slot";
                                reg = < 0x00000000 >;
                                voltage-ranges = <3300 3300>;
                                spi-max-frequency = <2000000>;
                        };
                };

I have really checked all the wire connections multiple times. They are connected as follows:

SD_DAT --> MISO
SD_CMD <-- MOSI
SD_CLK <-- SCLK
SD_DAT <-- SS_N

Any hints or suggestions on what I am doing wrong is appreciated. Thank you.

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well, I'm still stuck

I thought I'd see something like this

on boot, as ashown in nioswiki

so I thought of a few possible problems

1. pin assignments

2. IP core not configured as should

3. driver not loaded

now I'm down to either it's an IP problem or driver problem

so just to make sure again

it is Altera's SPI (3 wire interface) IP, right? not someone else's similar IP?

and if so could someone show me the right configuration?

Thanks again,

Asaf

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Hi,

I am having the same issue and don't see this message which I am supposedly see when boot up.

mmc_spi spi2.0: assuming spi bus stays unshared!

mmc_spi spi2.0: assuming 3.2-3.4 v slot power

mmc_spi spi2.0: sd/mmc host mmc0, no dma, no wp, no poweroff

I follow exactly the recommended setting, but still don't see the message at the bootup

Device Drivers --->

[*] SPI support --->

[*] Altera SPI Controller Device Drivers --->

[*] MMC/SD card support --->

[*] MMC/SD over SPI File systems --->

[*] Ext3 journalling file system support File systems ---> DOS/FAT/NT Filesystems --->

[*] VFAT (Windows-95) fs support File systems ---> -*- Native language support --->

[*] Codepage 437 (United States, Canada) File systems ---> -*- Native language support --->

[*] NLS ISO 8859-1 (Latin 1; Western European Languages)

On the hdl side in quartus, the pin out as follow

input wire SD_DAT, // sd.MISO

output wire SD_CMD, // .MOSI

output wire SD_CLK, // .SCLK

output wire SD_DAT3, // .SS_n

....

my_NIOS_mmc_spi mmc_spi (

.clk (mypll_c2_clk), // clk.clk

.reset_n (~rst_controller_002_reset_out_reset), // reset.reset_n

.data_from_cpu (mmc_spi_spi_control_port_translator_avalon_anti_slave_0_writedata), // spi_control_port.writedata

.data_to_cpu (mmc_spi_spi_control_port_translator_avalon_anti_slave_0_readdata), // .readdata

.mem_addr (mmc_spi_spi_control_port_translator_avalon_anti_slave_0_address), // .address

.read_n (~mmc_spi_spi_control_port_translator_avalon_anti_slave_0_read), // .read_n

.spi_select (mmc_spi_spi_control_port_translator_avalon_anti_slave_0_chipselect), // .chipselect

.write_n (~mmc_spi_spi_control_port_translator_avalon_anti_slave_0_write), // .write_n

.irq (irq_synchronizer_005_receiver_irq), // irq.irq

.MISO_to_the_mmc_spi (SD_DAT), // external.export

.MOSI_from_the_mmc_spi (SD_CMD), // .export

.SCLK_from_the_mmc_spi (SD_CLK), // .export

.SS_n_from_the_mmc_spi (SD_DAT3) // .export

);

Please help! I greatly appreciated if anyone can point me to the right direction??

Just checked my PinPlanner, these are my settings for a DE2-115 board. Maybe it'll help if you also use DE2-115.

SD_CLK - PIN_AE13

SD_CMD - PIN_AD14

SD_DAT0 - PIN_AE14 (not SD_DAT[0] for some reason...)

SD_DAT3 - PIN_AC14 (no SD_DAT[3] for some reason...)

Hi, I am using the DE2-115 with uclinux v3.7 and our pin out are the same as you had stated.

SCLK -> SD_CLK -> PIN_AE13 (Clk)

MOSI -> SD_CMD -> PIN_AD14 (Data Input)

MISO -> SD_DAT -> PIN_AE14 (Data output)

SS_N -> SD_DAT3 -> PIN_AC14 (Chip Selection)

I still don't see the mmc_spi message on the bootup screen. I check the kernel setting many times and can't think of anything I did wrong??

Please help anyone!