Talk:Booting the Neo FreeRunner from SD via U-Boot - Revision history

Marko Knöbl: Talk:Booting from SD moved to Talk:Booting the Neo FreeRunner from SD via U-Boot: clarifying what this page is about

2010-03-31T09:29:55Z

Talk:Booting from SD moved to Talk:Booting the Neo FreeRunner from SD via U-Boot: clarifying what this page is about

Undrwater: /* Take care with inode size when formatting ext2 partitions */ new section

2009-08-14T06:11:04Z

‎Take care with inode size when formatting ext2 partitions: new section

Pander at 11:05, 20 July 2009

2009-07-20T11:05:13Z

Bram at 20:59, 22 January 2009

2009-01-22T20:59:01Z

Brian 252 at 15:16, 8 August 2008

2008-08-08T15:16:21Z

Thewtex: done and done

2008-07-27T03:38:06Z

done and done

Thewtex: /* Formatting for VFAT--uBoot now supports ext2 */

2008-07-27T02:14:17Z

‎Formatting for VFAT--uBoot now supports ext2

Supercheetah: /* Formatting for VFAT--uBoot now supports ext2 */ new section

2008-07-26T02:58:42Z

‎Formatting for VFAT--uBoot now supports ext2: new section

Peterpall: /* = Booting the Freerunner from a SD card */

2008-07-13T09:17:34Z

‎= Booting the Freerunner from a SD card

Peterpall at 09:17, 13 July 2008

2008-07-13T09:17:10Z

← Older revision		Revision as of 06:11, 14 August 2009
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	== Benefits ==		== Benefits ==
	What are the benefits of booting from SD? Does it improve the performance in terms of speed and/or non-SD RAM/ROM memory usage of the device? [[User:Pander\|Pander]] 11:05, 20 July 2009 (UTC)		What are the benefits of booting from SD? Does it improve the performance in terms of speed and/or non-SD RAM/ROM memory usage of the device? [[User:Pander\|Pander]] 11:05, 20 July 2009 (UTC)
		+
		+	== Take care with inode size when formatting ext2 partitions ==
		+
		+	I noticed uboot was having difficulty reading the cards I had formatted using my linux box. Google to the rescue, I found the following discussion:
		+	[http://www.nabble.com/Problems-with-ext2ls---SD-ts22728281.html#a22756563 Uboot Discussion]
		+
		+	So apparently uboot is currently only reading ext2 partitions with an inode size of 128. Recent default is 256. I wonder if the mkfs with our distros defaults to 128?
		+
		+	Workaround: mke2fs -I 128 /dev/sd*
		+
		+	Hopefully uboot will be updated to allow default inodes to be recognized.
		+
		+	--[[User:Undrwater\|Undrwater]] 06:11, 14 August 2009 (UTC)Russell Dwiggins

← Older revision		Revision as of 11:05, 20 July 2009
Line 5:		Line 5:
	Using a sync after the umount is completely redundant right? After umount there is no block part in the kernel doing any caching, so there is nothing to actually sync anymore. So I think the sync should be removed.		Using a sync after the umount is completely redundant right? After umount there is no block part in the kernel doing any caching, so there is nothing to actually sync anymore. So I think the sync should be removed.
	[[User:Bram\|Bram]]		[[User:Bram\|Bram]]
		+
		+	== Benefits ==
		+	What are the benefits of booting from SD? Does it improve the performance in terms of speed and/or non-SD RAM/ROM memory usage of the device? [[User:Pander\|Pander]] 11:05, 20 July 2009 (UTC)

← Older revision		Revision as of 20:59, 22 January 2009
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	== Updating U-Boot ==		== Updating U-Boot ==
	Can you link to instructions on updating the u-boot. I think this is it [[Flashing_the_Neo_FreeRunner#Flashing_the_boot_loader_to_the_NAND\|here]].		Can you link to instructions on updating the u-boot. I think this is it [[Flashing_the_Neo_FreeRunner#Flashing_the_boot_loader_to_the_NAND\|here]].
		+
		+	== sync after umount? ==
		+	Using a sync after the umount is completely redundant right? After umount there is no block part in the kernel doing any caching, so there is nothing to actually sync anymore. So I think the sync should be removed.
		+	[[User:Bram\|Bram]]

← Older revision	Revision as of 15:16, 8 August 2008
Line 1:	Line 1:
−	+	== Updating U-Boot ==
	+	Can you link to instructions on updating the u-boot. I think this is it [[Flashing_the_Neo_FreeRunner#Flashing_the_boot_loader_to_the_NAND\|here]].

← Older revision		Revision as of 03:38, 27 July 2008
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−	~~== Booting the Freerunner from a SD card ==~~
−	~~My Freerunner came with a "boot from SD card" option already installed in uBoot. I just needed a SD (Not HDMC) card with the following layout:~~
−	* Partition 1 is a primary partition with a FAT filesystem containing the uImage - which has to be named uImage.bin
−	* Partiton 2 is a Filesystem containing the root partition. According to the uBoot environment it should be an ext2 partiton, - but it seems like the standrd kernels from the buildhost don't support this. Will try to change the uBoot environemt variable so I can boot from ext3 - which should be supported by the kernel one day.
−	~~My hardware setup is:~~
−	* Latest uBoot (July 12, 2008)
−	* Freerunner (GTA02V5, 1st batch that could be regularily ordered from the openmoko online shop.)
−	~~The uBoot environment variable that should allow booting from my card reads:~~
−	menu_1=Boot from microSD (FAT+ext2): setenv bootargs ${bootargs_base} rootfstype=ext2 root=/dev/mmcblk0p2 rootdelay=5 ${mtdparts} ro; mmcinit; fatload mmc 1 0x32000000 ${sd_image_name}; bootm 0x32000000
−	~~As far as I know it should be changed after logging into uBoot by~~
−	~~setenv menu_1 Boot from microSD (FAT+ext3): setenv bootargs ${bootargs_base} root=/dev/mmcblk0p2 rootdelay=5 ${mtdparts}ro\; mmcinit\; fatload mmc 1 0x32000000 ${sd_image_name}\; bootm 0x32000000~~
−	~~if we want to boot a stock kernel from sd card.~~

−	~~But I have not been able to test it until now, though.~~
−
−	~~== Formatting for VFAT--uBoot now supports ext2 ==~~
−
−	All the stuff that was put in there to work around uBoot's limitation of not supporting ext2fs, and instead, using VFAT should be changed. I'm still playing around with this stuff, so I wasn't sure that what I'd put in there would be accurate. [[User:Supercheetah\|Supercheetah]] 02:58, 26 July 2008 (UTC)
−
−	~~agreed -- need the newer uboot, but it can be changed. I have not tested it yet because I came across the SDHC problems I indicated at the top. [[User:Thewtex\|thewtex]] 02:14, 27 July 2008 (UTC)~~

← Older revision		Revision as of 02:14, 27 July 2008
Line 17:		Line 17:

	All the stuff that was put in there to work around uBoot's limitation of not supporting ext2fs, and instead, using VFAT should be changed. I'm still playing around with this stuff, so I wasn't sure that what I'd put in there would be accurate. [[User:Supercheetah\|Supercheetah]] 02:58, 26 July 2008 (UTC)		All the stuff that was put in there to work around uBoot's limitation of not supporting ext2fs, and instead, using VFAT should be changed. I'm still playing around with this stuff, so I wasn't sure that what I'd put in there would be accurate. [[User:Supercheetah\|Supercheetah]] 02:58, 26 July 2008 (UTC)
		+
		+	agreed -- need the newer uboot, but it can be changed. I have not tested it yet because I came across the SDHC problems I indicated at the top. [[User:Thewtex\|thewtex]] 02:14, 27 July 2008 (UTC)

← Older revision		Revision as of 02:58, 26 July 2008
Line 13:		Line 13:

	But I have not been able to test it until now, though.		But I have not been able to test it until now, though.
		+
		+	== Formatting for VFAT--uBoot now supports ext2 ==
		+
		+	All the stuff that was put in there to work around uBoot's limitation of not supporting ext2fs, and instead, using VFAT should be changed. I'm still playing around with this stuff, so I wasn't sure that what I'd put in there would be accurate. [[User:Supercheetah\|Supercheetah]] 02:58, 26 July 2008 (UTC)

@@ Line 1: / Line 1: @@
-== Booting the Freerunner from a SD card =
+== Booting the Freerunner from a SD card ==
 My Freerunner came with a "boot from SD card" option already installed in uBoot. I just needed a SD (Not HDMC) card with the following layout:
 * Partition 1 is a primary partition with a FAT filesystem containing the uImage - which has to be named uImage.bin

@@ Line 1: / Line 1: @@
-= Simpler way of booting from a SD card =
+== Booting the Freerunner from a SD card =
-My freerunner came with a "boot from SD card" option already installed in uBoot. I just needed a SD (Not HDMC) card with the following layout:
+My Freerunner came with a "boot from SD card" option already installed in uBoot. I just needed a SD (Not HDMC) card with the following layout:
 * Partition 1 is a primary partition with a FAT filesystem containing the uImage - which has to be named uImage.bin
 * Partiton 2 is a Filesystem containing the root partition. According to the uBoot environment it should be an ext2 partiton, - but it seems like the standrd kernels from the buildhost don't support this. Will try to change the uBoot environemt variable so I can boot from ext3 - which should be supported by the kernel one day.
@@ Line 8: / Line 8: @@
 The uBoot environment variable that should allow booting from my card reads:
   menu_1=Boot from microSD (FAT+ext2): setenv bootargs ${bootargs_base} rootfstype=ext2 root=/dev/mmcblk0p2 rootdelay=5 ${mtdparts} ro; mmcinit; fatload mmc 1 0x32000000 ${sd_image_name}; bootm 0x32000000