Didj U-Boot NAND Flashing - Revision history

Jrspruitt: /* Prerequisites */

2011-07-15T09:03:40Z

‎Prerequisites

Jrspruitt: /* Prerequisites */

2011-07-15T09:03:26Z

‎Prerequisites

Jrspruitt: /* Prerequisites */

2011-07-15T09:03:08Z

‎Prerequisites

Jrspruitt at 08:50, 15 July 2011

2011-07-15T08:50:57Z

Jrspruitt at 08:50, 15 July 2011

2011-07-15T08:50:32Z

Jrspruitt: /* Software Needed */

2011-07-15T06:55:04Z

‎Software Needed

Jrspruitt: /* Hardware Needed */

2011-07-14T06:55:40Z

‎Hardware Needed

Jrspruitt at 06:54, 14 July 2011

2011-07-14T06:54:48Z

Jrspruitt: moved Didj Full Recovery to Didj U-Boot NAND Flashing: scope of article changed.

2011-07-14T06:50:38Z

moved Didj Full Recovery to Didj U-Boot NAND Flashing: scope of article changed.

Jrspruitt at 06:07, 14 July 2011

2011-07-14T06:07:05Z

@@ Line 9: / Line 9: @@
 == Prerequisites ==
 * [[Didj_uboot#NAND_Command_Reference| U-Boot Command Reference]]
-* You'll want to follow this tutorial up to and including loading U-Boot.
+* You'll want to follow this tutorial up to and including loading U-Boot.[[Didj_UART_Boot| UART Boot]]
 [[Didj_UART_Boot| UART Boot]]
 == Programs Needed ==

@@ Line 8: / Line 8: @@
 == Prerequisites ==
-[[Didj_uboot#NAND_Command_Reference| U-Boot Command Reference]]
+* [[Didj_uboot#NAND_Command_Reference| U-Boot Command Reference]]
-You'll want to follow this tutorial up to and including loading U-Boot.
+* You'll want to follow this tutorial up to and including loading U-Boot.
 [[Didj_UART_Boot| UART Boot]]

@@ Line 8: / Line 8: @@
 == Prerequisites ==
 You'll want to follow this tutorial up to and including loading U-Boot.
 [[Didj_UART_Boot| UART Boot]]

← Older revision		Revision as of 08:50, 15 July 2011
Line 1:		Line 1:
		+	== Summary ==
		+
	This is a tutorial on how to recover your Didj from absolute failure. It will take a Didj whose NAND has been completely erased, and bring it back to fully functional. But it can also be used to install specific things, like just a bootloader, or just the kernel.		This is a tutorial on how to recover your Didj from absolute failure. It will take a Didj whose NAND has been completely erased, and bring it back to fully functional. But it can also be used to install specific things, like just a bootloader, or just the kernel.

@@ Line 3: / Line 3: @@
 ''' Caution '''
-Read this tutorial completely before attempting. This will be erasing the operating system and bootloader from your device, any one of these steps, if not completed correctly, could leave your Didj useless.
+Read this tutorial completely before attempting. This will be erasing the operating system and bootloader from your device, any one of these steps, if not completed correctly, could leave your Didj useless. It is recommended if at all possible, use the Didj's built in updating abilities [[Didj_BootLoader_Firmware_Updating| Bootloader and Firmware Updating]]
 == Prerequisites ==

@@ Line 20: / Line 20: @@
 == Software Needed ==
-[[Didj_uboot | uboot.bin]] with SD capabilities
+[[Didj_uboot | uboot.bin]]
-[[Didj_Lightning_Boot | lighting-boot.bin]] Version 1.4
+[[Didj_Lightning_Boot | Lightning Boot]]
-kernel.bin (Either from LFP Package or a known working version)
+kernel.bin
-erootfs.jffs2 (Either from LFP Package or a known working version)
+erootfs.jffs2
 == Preparing ==

@@ Line 15: / Line 15: @@
 [[LeapFrog_Pollux_Platform:_Console_Access| Console Access]]
-[[LeapFrog_Pollux_Platform:_Cartridge| SD Card cartridge or connection to Didj]]
+[[LeapFrog_Pollux_Platform:_Cartridge| Cartridge]]
 SD Card Reader/Writer

@@ Line 1: / Line 1: @@
-This is a tutorial on how to recover your Didj from absolute failure. It will take a Didj whose NAND has been completely erased, and bring it back to fully functional. Though there is one issue, Bad Blocks, which may get in the way of recovery. I don't recommend doing a full erase of your NAND as this will erase the Bad Blocks set by the factory.
+This is a tutorial on how to recover your Didj from absolute failure. It will take a Didj whose NAND has been completely erased, and bring it back to fully functional. But it can also be used to install specific things, like just a bootloader, or just the kernel.
-TODO: Investigate more about Bad Blocks and how uboot deals with them.
+''' Caution '''
 == Programs Needed ==
@@ Line 11: / Line 17: @@
 [[LeapFrog_Pollux_Platform:_Cartridge| SD Card cartridge or connection to Didj]]
-SD Card Reader/Writer on the host PC
+SD Card Reader/Writer
-== Files Needed ==
+== Software Needed ==
 [[Didj_uboot | uboot.bin]] with SD capabilities
@@ Line 22: / Line 28: @@
 erootfs.jffs2 (Either from LFP Package or a known working version)
-== Getting Started ==
+== Preparing ==
-Connect you're SD Card Reader/Writer to your computer, and plug in the SD Card.
+Load kernel.bin, u-boot.bin, and lightning-boot-UART.bin onto your SD card.
-Gather the Files Needed and transfer them to the main directory of the SD Card, they can not be in a folder.
+ # hexdump -C -n 16 lightning-boot.bin
-Eject your SD Card and put it into your Didj SD Card adapter.
+''' Caution ''', if you get excessive bad erase block messages, while erasing parts of the nand, try using nandscrub to deal with them, but this should be a last resort, as it will destroy all data on your NAND, and you will have to put it all back. This also has the side effect of erasing your bad block data, which could cause complications.
-You are now going to need to load a bootloader over UART [[Didj_UART_Boot_with_Linux_Host|Linux]]/[[Didj_Boot_From_UART|Windows]] but stop at uboot, also read [[Didj_U_Boot_Flashing_Primer|this]] tutorial for information on the different bootloader 1.4 variants, you'll need both UART and NAND versions, UART to get started, and NAND to install.
+Gather the Files Needed and transfer them to the main directory of the SD Card, they can not be in a folder. U-Boot is the only file you will always need. Lightning Boot, Kernel, or Rootfs is on an as needed basis.
-One note, if you get excessive bad erase block messages, while erase parts of the nand, try using nandscrub to deal with them.
+You are now going to need to load a bootloader with [[Didj_UART_Boot|UART Boot]] but stop after loading U-Boot
-Once at the uboot prompt, we can start writing the files to the Didj.
+Once at the U-Boot prompt, we can start writing the files to the Didj.
 == Lightning Boot ==