CM-T3x: Linux: Booting from MMC/SD card - Revision history

Lifshitz: /* Booting Linux */

2013-01-09T14:18:26Z

‎Booting Linux

Grinberg: /* Booting Linux */

2012-06-04T08:59:25Z

‎Booting Linux

Grinberg at 11:28, 29 August 2011

2011-08-29T11:28:01Z

Mike: CM-T3530: Linux: Booting from MMC/SD card moved to CM-T3x: Linux: Booting from MMC/SD card

2011-01-31T07:20:23Z

CM-T3530: Linux: Booting from MMC/SD card moved to CM-T3x: Linux: Booting from MMC/SD card

Mike at 15:03, 22 December 2009

2009-12-22T15:03:30Z

New page

CM-T3530 can boot either from on-board NAND flash or from MMC/SD card. There are certain requirements for MMC/SD card format imposed by internal boot ROM of the OMAP35x processor. The following describes how to create bootable MMC/SD card for different use cases.

== Creating a bootable MMC/SD card ==
In order to create a bootable MMC/SD card compatible with OMAP35x boot ROM, it is necessary to set a special geometry in the partition table. OMAP35x boot ROM can work only with MMC/SD cards that have 255 heads and 63 sectors/track.

=== Linux ===
Detailed description how use Linux {{cmd|fdisk}} utility to adjust MMC/SD card partition table to suit OMAP35X boot ROM requirements can be found at [http://wiki.omap.com/index.php?title=MMC_Boot_Format TI Embedded Processors Wiki].

=== Windows ===
Windows users can use [http://www.sysanalyser.com/sp27213.exe HP USB Disk Storage Format Tool] and follow the steps below:
* Connect the card reader to the Windows machine where the formatting tool has been installed.
* Insert MMC/SD card into the card reader.
* Launch the HP USB Disk Storage Format Tool.
* Select FAT32 as File System.
* Click on Start.
* After formatting is done click OK.

After a bootable MMC/SD card is created it can be used for recovery system startup, for X-Loader and U-Boot testing and for booting Linux entirely from MMC/SD.

== Booting X-Loader and U-Boot ==
* Copy X-Loader to the MMC/SD card's root directory and rename it as {{filename|MLO}}. It is essential that the MLO will be the first file created on the MMC/SD card.
* Copy U-Boot binary to the MMC/SD card's root directory and rename it as {{filename|u-boot.bin}}.
* Insert the MMC/SD card into SB-T3530 MMC/SD slot.
* Power on the system while holding "SD Boot" (SW1) button on SB-T35.

== Booting Linux ==
CM-T3530 can boot Linux from MMC/SD card. The MMC/SD card should have geometry parameters compatible with OMAP35X boot ROM (255 heads, 63 sectors/track) and two partitions: FAT32 partition for X-Loader, U-Boot and Linux kernel and ext3 partition for root filesystem.

After MMC/SD card geometry and partition table were updated, create FAT32 filesystem on the first partition and ext3 filsystem on the second partition:
sudo mkfs.vfat -F 32 /dev/sdc1
sudo mkfs.ext3 /dev/sdc2
In the above example we assumed that the card was recognized as {{filename|/dev/sdc}}.

Mount the MMC/SD card FAT partition and copy X-Loader ({{filename|MLO}}), U-Boot ({{filename|u-boot.bin}}) and Linux kernel ({{filename|uImage}}) to the MMC/SD card:
mkdir /mnt/card
mount /dev/sdc1 /mnt/card
cp /path/to/t3530-uboot/images/x-load.bin.ift /mnt/card/MLO
sync
cp /path/to/t3530-uboot/images/u-boot.bin /mnt/card
cp /path/to/t3530-linux/images/uImage-cm-t35.bin /mnt/card
umount /mnt/card

Extract Linux filesystem into the ext3 partition of the MMC/SD card:
mount /dev/sdc2 /mnt/card
cd /mnt/card
tar xjvf /path/to/t3530-linux/images/Angstrom-image.tar.bz2
umount /mnt/card

The MMC/SD card is now ready and can be used to boot Linux. The kernel parameters required for MMC/SD boot are
root=/dev/mmcblk0p2 console=ttyS2,115200 rootwait

== See also ==
[http://code.google.com/p/beagleboard/wiki/LinuxBootDiskFormat BeagleBoard MMC/SD boot]

[[Category:Linux|Booting from MMC/SD card]]
[[Category:U-Boot|Booting from MMC/SD card]]
[[Category:CM-T3530|Linux: Booting from MMC/SD card]]

@@ Line 54: / Line 54: @@
 The MMC/SD card is now ready and can be used to boot Linux. The kernel parameters required for MMC/SD boot are
 <pre>
-root=/dev/mmcblk0p2 console=ttyS2,115200 rootwait mmc_core.removable=0
+root=/dev/mmcblk0p2 console=ttyS2,115200n8 rootwait mmc_core.removable=0
 </pre>

← Older revision		Revision as of 11:28, 29 August 2011
Line 56:		Line 56:
	[[Category:U-Boot\|Booting from MMC/SD card]]		[[Category:U-Boot\|Booting from MMC/SD card]]
	[[Category:CM-T3530\|Linux: Booting from MMC/SD card]]		[[Category:CM-T3530\|Linux: Booting from MMC/SD card]]
		+	[[Category:CM-T3517]]
		+	[[Category:CM-T3730]]

@@ Line 2: / Line 2: @@
 == Creating a bootable MMC/SD card ==
-In order to create a bootable MMC/SD card compatible with OMAP35x boot ROM, it is necessary to set a special geometry in the partition table. OMAP35x boot ROM can work only with MMC/SD cards that have 255 heads and 63 sectors/track.
+In order to create a bootable MMC/SD card compatible with OMAP3x boot ROM, it is necessary to set a special geometry in the partition table. OMAP3x boot ROM can work only with MMC/SD cards that have 255 heads and 63 sectors/track.
 === Linux ===
-Detailed description how use Linux {{cmd|fdisk}} utility to adjust MMC/SD card partition table to suit OMAP35X boot ROM requirements can be found at [http://wiki.omap.com/index.php?title=MMC_Boot_Format TI Embedded Processors Wiki].
+Detailed description how use Linux {{cmd|fdisk}} utility to adjust MMC/SD card partition table to suit OMAP3x boot ROM requirements can be found at [http://wiki.omap.com/index.php?title=MMC_Boot_Format TI Embedded Processors Wiki].
 === Windows ===
@@ Line 21: / Line 21: @@
 * Copy X-Loader to the MMC/SD card's root directory and rename it as {{filename|MLO}}. It is essential that the MLO will be the first file created on the MMC/SD card.
 * Copy U-Boot binary to the MMC/SD card's root directory and rename it as {{filename|u-boot.bin}}.
-* Insert the MMC/SD card into SB-T3530 MMC/SD slot.
+* Insert the MMC/SD card into SB-T35 MMC/SD slot or the CM-T3x on-board micro SD slot.
-* Power on the system while holding "SD Boot" (SW1) button on SB-T35.
+* Power on the system while holding {{parameter|SD Boot}} (SW1) button on SB-T35.
 == Booting Linux ==
-CM-T3530 can boot Linux from MMC/SD card. The MMC/SD card should have geometry parameters compatible with OMAP35X boot ROM (255 heads, 63 sectors/track) and two partitions: FAT32 partition for X-Loader, U-Boot and Linux kernel and ext3 partition for root filesystem.
+CM-T3x can boot Linux from MMC/SD card. The MMC/SD card must have geometry parameters compatible with OMAP3x boot ROM (255 heads, 63 sectors/track) and at least two partitions: FAT32 partition for X-Loader, U-Boot and Linux kernel and ext4 partition for root filesystem.
-After MMC/SD card geometry and partition table were updated, create FAT32 filesystem on the first partition and ext3 filsystem on the second partition:
+After MMC/SD card geometry and partition table were updated, create FAT32 filesystem on the first partition and ext4 filsystem on the second partition:
- sudo mkfs.vfat -F 32 /dev/sdc1
+<pre>
- sudo mkfs.ext3 /dev/sdc2
+sudo mkfs.vfat -F 32 /dev/sdc1
 In the above example we assumed that the card was recognized as {{filename|/dev/sdc}}.
 Mount the MMC/SD card FAT partition and copy X-Loader ({{filename|MLO}}), U-Boot ({{filename|u-boot.bin}}) and Linux kernel ({{filename|uImage}}) to the MMC/SD card:
- mkdir /mnt/card
+<pre>
- mount /dev/sdc1 /mnt/card
+mkdir /mnt/card
- cp /path/to/t3530-uboot/images/x-load.bin.ift /mnt/card/MLO
+mount /dev/sdc1 /mnt/card
- sync
+cp /path/to/cm-t3x-uboot/images/x-load.bin /mnt/card/MLO
- cp /path/to/t3530-uboot/images/u-boot.bin /mnt/card
+sync
- cp /path/to/t3530-linux/images/uImage-cm-t35.bin /mnt/card
+cp /path/to/cm-t3x-uboot/images/u-boot.bin /mnt/card
- umount /mnt/card
+cp /path/to/cm-t3x-linux/images/uImage-cm-t3x.bin /mnt/card
-Extract Linux filesystem into the ext3 partition of the MMC/SD card:
+Extract the Linux filesystem into the ext4 partition of the MMC/SD card:
- mount /dev/sdc2 /mnt/card
+<pre>
- cd /mnt/card
+mount /dev/sdc2 /mnt/card
- tar xjvf /path/to/t3530-linux/images/Angstrom-image.tar.bz2
+cd /mnt/card
- umount /mnt/card
+tar xjvf /path/to/cm-t3x-linux/images/Angstrom-image.tar.bz2
 The MMC/SD card is now ready and can be used to boot Linux. The kernel parameters required for MMC/SD boot are
- root=/dev/mmcblk0p2 console=ttyS2,115200 rootwait
+<pre>
 == See also ==

← Older revision	Revision as of 07:20, 31 January 2011
(No difference)