Flashing filesystems larger than RAM - Revision history

Support: /* Setup mtd-utils */

2012-09-26T17:39:05Z

Setup mtd-utils

← Older revision		Revision as of 17:39, 26 September 2012
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	Prepare a microSD card for flashing NAND using mtd-utils. This is a one time setup.		Prepare a microSD card for flashing NAND using mtd-utils. This is a one time setup.

-	1. Setup a bootable microSD card using the [[Boot from SD/MMC\|procedure in the Wiki]]. ~~Start with a blank~~ NAND by executing "nand erase" from the bootloader.	+	1. Setup a bootable microSD card using the [[Boot from SD/MMC\|procedure in the Wiki]]. Erase the current NAND contents by executing "nand erase" from the bootloader.

	2. If the board is configured to boot from NAND, change the bootloader configuration to boot from microSD. Press space bar when the bootloader loads to get an ">Electrum" command prompt.		2. If the board is configured to boot from NAND, change the bootloader configuration to boot from microSD. Press space bar when the bootloader loads to get an ">Electrum" command prompt.

Support at 17:37, 26 September 2012

2012-09-26T17:37:18Z

← Older revision		Revision as of 17:37, 26 September 2012
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	setenv bootargs console=ttyS0,115200 root=/dev/mmcblk0p1 rw ip=192.168.1.101:192.168.1.253::255.255.255.0::eth0:none		setenv bootargs console=ttyS0,115200 root=/dev/mmcblk0p1 rw ip=192.168.1.101:192.168.1.253::255.255.255.0::eth0:none
-	setenv bootcmd mmcinfo\; ext2load mmc 0:1 0x22000000 uImage-2.6.33.5\; bootm	+	setenv bootcmd mmcinfo\; ext2load mmc 0:1 0x22000000 uImage-2.6.33.20-1-at91\; bootm
	saveenv		saveenv
	reset		reset
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	setenv bootargs console=ttyS0,115200 root=/dev/mmcblk0p1 rw ip=192.168.1.101:192.168.1.253::255.255.255.0::eth0:none		setenv bootargs console=ttyS0,115200 root=/dev/mmcblk0p1 rw ip=192.168.1.101:192.168.1.253::255.255.255.0::eth0:none
-	setenv bootcmd mmcinfo\; ext2load mmc 0:1 0x22000000 uImage-2.6.33.5\; bootm	+	setenv bootcmd mmcinfo\; ext2load mmc 0:1 0x22000000 uImage-2.6.33.20-1-at91\; bootm
	saveenv		saveenv
	reset		reset
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	# flash_erase /dev/mtd5 0 0		# flash_erase /dev/mtd5 0 0
-	# nandwrite -p /dev/mtd5 uImage-2.6.33.5	+	# nandwrite -p /dev/mtd5 uImage-2.6.33.20-1-at91

	4. Flash the root filesystem		4. Flash the root filesystem

Support: /* Setup mtd-utils */

2012-09-26T17:35:17Z

Setup mtd-utils

← Older revision		Revision as of 17:35, 26 September 2012
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	Prepare a microSD card for flashing NAND using mtd-utils. This is a one time setup.		Prepare a microSD card for flashing NAND using mtd-utils. This is a one time setup.

-	1. Setup a bootable microSD card using the [[Boot from SD/MMC\|procedure in the Wiki]].	+	1. Setup a bootable microSD card using the [[Boot from SD/MMC\|procedure in the Wiki]]. Start with a blank NAND by executing "nand erase" from the bootloader.

	2. If the board is configured to boot from NAND, change the bootloader configuration to boot from microSD. Press space bar when the bootloader loads to get an ">Electrum" command prompt.		2. If the board is configured to boot from NAND, change the bootloader configuration to boot from microSD. Press space bar when the bootloader loads to get an ">Electrum" command prompt.

Support: /* Preload option */

2012-08-24T15:25:15Z

Preload option

← Older revision		Revision as of 15:25, 24 August 2012
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	=Preload option=		=Preload option=
-	Micromint offers the option of loading your custom kernel or filesystem in NAND when the board is manufactured. This can be a big time saver, particularly in larger volumes. For larger orders (100 units or above) there is no cost for this option. For smaller orders there is a nominal cost for this service. For larger filesystems (over 62MB compressed) ~~requiring loading via microSD,~~ there is a setup cost (NRE). Please contact our [mailto:sales@micromint.com sales team] for details.	+	Micromint offers the option of loading your custom kernel or filesystem in NAND when the board is manufactured. This can be a big time saver, particularly in larger volumes. For larger orders (100 units or above) there is no cost for this option. For smaller orders there is a nominal cost for this service. For larger filesystems (over 62MB compressed) there is also a setup cost (NRE). Please contact our [mailto:sales@micromint.com sales team] for details.

Support: /* Preload option */

2012-08-24T15:14:56Z

Preload option

← Older revision		Revision as of 15:14, 24 August 2012
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	=Preload option=		=Preload option=
-	Micromint offers the option of loading your custom kernel or filesystem in NAND when the board is manufactured. This can be a big time saver, particularly in larger volumes. For larger orders (100 units or above) there is no cost for this option. For smaller orders there is a nominal cost for this service. Please contact our [mailto:sales@micromint.com sales team] for details.	+	Micromint offers the option of loading your custom kernel or filesystem in NAND when the board is manufactured. This can be a big time saver, particularly in larger volumes. For larger orders (100 units or above) there is no cost for this option. For smaller orders there is a nominal cost for this service. For larger filesystems (over 62MB compressed) requiring loading via microSD, there is a setup cost (NRE). Please contact our [mailto:sales@micromint.com sales team] for details.

Support: /* Flash filesystem */

2011-09-22T00:29:08Z

Flash filesystem

← Older revision		Revision as of 00:29, 22 September 2011
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	=Flash filesystem=		=Flash filesystem=
-	This procedure writes the filesystem to NAND. It is executed on each board to be flashed.	+	This procedure writes the filesystem to NAND. It should be executed on each board to be flashed.

	1. If the board is configured to boot from NAND, change the bootloader configuration to boot from microSD. Press space bar when the bootloader loads to get an ">Electrum" command prompt.		1. If the board is configured to boot from NAND, change the bootloader configuration to boot from microSD. Press space bar when the bootloader loads to get an ">Electrum" command prompt.
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	# nandwrite -p /dev/mtd6 rootfs.armel.jffs2		# nandwrite -p /dev/mtd6 rootfs.armel.jffs2

-	5. Configure bootloader back for NAND boot. Press space bar when the bootloader loads to get an ">Electrum" command prompt.	+	5. Configure the bootloader back for NAND boot. Press space bar when the bootloader loads to get an ">Electrum" command prompt.

	setenv bootargs console=ttyS0,115200 root=/dev/mtdblock6		setenv bootargs console=ttyS0,115200 root=/dev/mtdblock6

Support at 00:28, 22 September 2011

2011-09-22T00:28:10Z

← Older revision		Revision as of 00:28, 22 September 2011
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-	The [[Electrum-100 Manual\|Electrum User's Manual]] suggests using the U-Boot bootloader to flash the kernel and root filesystem to NAND. ~~U-Boot performs this in~~ two steps. First the file is copied from the original source (USB, TFTP, microSD) to RAM using the corresponding command (fatload, tftp, etc.). Then it is copied from RAM to NAND using the "nand write" and "nand write.jffs2" commands. This procedure is simple but limits the size of the initial filesystem contents to the available RAM. Files can be added to the root filesystem after Linux boots, but this is more cumbersome if multiple boards need to be flashed.	+	The [[Electrum-100 Manual\|Electrum User's Manual]] suggests using the U-Boot bootloader to flash the kernel and root filesystem to NAND. This requires two steps. First the file is copied from the original source (USB, TFTP, microSD) to RAM using the corresponding command (fatload, tftp, etc.). Then it is copied from RAM to NAND using the "nand write" and "nand write.jffs2" commands. This procedure is simple but limits the size of the initial filesystem contents to the available RAM. Files can be added to the root filesystem after Linux boots, but this is more cumbersome when multiple boards need to be flashed.

Support: /* Install mtd-utils */

2011-09-22T00:25:40Z

Install mtd-utils

← Older revision		Revision as of 00:25, 22 September 2011
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	For larger filesystems a better alternative is to flash from Linux instead of the bootloader. This requires booting the board using a medium other than NAND, such as microSD, USB or NFS. This application note explains the procedure when booting Linux from a microSD card. It can be easily adapted to USB or NFS boots.		For larger filesystems a better alternative is to flash from Linux instead of the bootloader. This requires booting the board using a medium other than NAND, such as microSD, USB or NFS. This application note explains the procedure when booting Linux from a microSD card. It can be easily adapted to USB or NFS boots.

-	=~~Install~~ mtd-utils=	+	=Setup mtd-utils=
-	~~Setup~~ a microSD card for flashing NAND using mtd-utils. This is a one time setup.	+	Prepare a microSD card for flashing NAND using mtd-utils. This is a one time setup.

-	1. ~~Prepare~~ a bootable microSD card using the [[Boot from SD/MMC\|procedure in the Wiki]].	+	1. Setup a bootable microSD card using the [[Boot from SD/MMC\|procedure in the Wiki]].

	2. If the board is configured to boot from NAND, change the bootloader configuration to boot from microSD. Press space bar when the bootloader loads to get an ">Electrum" command prompt.		2. If the board is configured to boot from NAND, change the bootloader configuration to boot from microSD. Press space bar when the bootloader loads to get an ">Electrum" command prompt.

Support: /* Preload Option */

2011-09-22T00:22:49Z

Preload Option

← Older revision		Revision as of 00:22, 22 September 2011
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	NOTE: The bootargs should be entered all in a single line.		NOTE: The bootargs should be entered all in a single line.

-	=Preload ~~Option~~=	+	=Preload option=
	Micromint offers the option of loading your custom kernel or filesystem in NAND when the board is manufactured. This can be a big time saver, particularly in larger volumes. For larger orders (100 units or above) there is no cost for this option. For smaller orders there is a nominal cost for this service. Please contact our [mailto:sales@micromint.com sales team] for details.		Micromint offers the option of loading your custom kernel or filesystem in NAND when the board is manufactured. This can be a big time saver, particularly in larger volumes. For larger orders (100 units or above) there is no cost for this option. For smaller orders there is a nominal cost for this service. Please contact our [mailto:sales@micromint.com sales team] for details.

Support: /* Setup mtd-utils */

2011-09-22T00:22:22Z

Setup mtd-utils

← Older revision		Revision as of 00:22, 22 September 2011
Line 4:		Line 4:
	For larger filesystems a better alternative is to flash from Linux instead of the bootloader. This requires booting the board using a medium other than NAND, such as microSD, USB or NFS. This application note explains the procedure when booting Linux from a microSD card. It can be easily adapted to USB or NFS boots.		For larger filesystems a better alternative is to flash from Linux instead of the bootloader. This requires booting the board using a medium other than NAND, such as microSD, USB or NFS. This application note explains the procedure when booting Linux from a microSD card. It can be easily adapted to USB or NFS boots.

-	=~~Setup~~ mtd-utils=	+	=Install mtd-utils=
	Setup a microSD card for flashing NAND using mtd-utils. This is a one time setup.		Setup a microSD card for flashing NAND using mtd-utils. This is a one time setup.