Panda How to MLO & u-boot - Revision history

Summers: /* Creating a working SD card */

2012-06-03T11:49:28Z

‎Creating a working SD card

Summers: /* Creating a working SD card */

2012-06-03T11:47:43Z

‎Creating a working SD card

Lail3344: /* Introduction */

2012-02-06T09:42:58Z

‎Introduction

Defiant: Some clarifications

2012-01-31T07:57:14Z

Some clarifications

Tim Bird: /* Introduction */

2011-12-13T22:57:28Z

‎Introduction

Tim Bird: /* Introduction */

2011-12-13T22:52:02Z

‎Introduction

Tim Bird: /* Introduction */

2011-12-13T22:42:21Z

‎Introduction

Tim Bird: add description of bootloader sequence

2011-12-13T22:41:56Z

add description of bootloader sequence

Defiant: /* Introduction */ note x-loader -> spl

2011-12-06T21:18:08Z

‎Introduction: note x-loader -> spl

Defiant: Update to u-boot+spl

2011-12-06T20:21:21Z

Update to u-boot+spl

← Older revision		Revision as of 11:49, 3 June 2012
Line 158:		Line 158:
	num_mbr == num_bpb ? "PASS" : "FAIL!" );		num_mbr == num_bpb ? "PASS" : "FAIL!" );

−	return num_mbr == num_bpb;	+	return num_mbr == num_bpb;}
−	}	+

← Older revision		Revision as of 11:47, 3 June 2012
Line 159:		Line 159:

	return num_mbr == num_bpb;		return num_mbr == num_bpb;
		+	}

@@ Line 5: / Line 5: @@
 The first-stage bootloader runs directly on the board from power-up.  I don't know the
-name of this bootloader.  This bootloader initializes a minimal amount of CPU and board hardware,
+name of this bootloader(From [http://processors.wiki.ti.com/index.php/Boot_Sequence TI official wiki], it called Boot Rom).  This bootloader initializes a minimal amount of CPU and board hardware,
 then accesses the first partition of the SD card (which must be in FAT format), and loads
 a file called "MLO", and executes it.  "MLO" is the second-stage bootloader.

@@ Line 31: / Line 31: @@
 You can get u-boot from either linaro or mainline. The linaro tree usually has the latest patches.
 == u-boot (linaro) ==
@@ Line 52: / Line 55: @@
   make CROSS_COMPILE=arm-none-linux-gnueabi-
-This should produce the files MLO and u-boot.img in the u-boot directory. Copy both files to your sd card.
+This should produce the files MLO and u-boot.img in the u-boot directory.
 == u-boot (mainline) ==
@@ Line 64: / Line 68: @@
   git checkout v2011.09
-Note: Tag v2011.09 from mainline might fail on some Pandaboard revisions, see http://lists.denx.de/pipermail/u-boot/2011-October/104842.html
+You now should be able to boot.
-You can use Linaro instead.
 === boot.scr ===
 Copy the following code to boot_mmc.txt

@@ Line 1: / Line 1: @@
 == Introduction ==
 A Panda board does not have any onboard flash, where many other development or evaluation boards
-keep their bootloader.  Rather, code onboard the board (presumably in ROM) reads the second and third-stage
+keep their bootloader.  Rather, code onboard the board (presumably in ROM) reads the second-stage
 bootloaders from the MMC (SD card).

@@ Line 1: / Line 1: @@
 == Introduction ==
-Newer kernels require that you use a recent MLO (x-loader) and u-boot.
+Newer kernels require that you use a recent MLO (SPL) and u-boot.
 You can build these from source, or try to find binaries. One issue with the binary route is that you might want to alter the kernel command line embedded inside u-boot. Such as for experimenting with different partition formats, or different filesystem types (ext3 vs ext2), etc. Of course you could stop the autoboot and type it in yourself, but we will build from source. An even better solution is to use a boot.scr file to send parameters to u-boot, it's easy to create, see below.
@@ Line 6: / Line 6: @@
 For this How-to, we will use the Code Sourcery G++ version arm-2009q3. It should already be installed on your system. MLO, u-boot and kernels have also been successfully built with arm-2010q1.
-== MLO ==
+You can get u-boot from either linaro or mainline. The linaro tree usually has the latest patches.
-First, let's get the x-loader source code and build it.
- git clone git://gitorious.org/pandaboard/x-loader-mainline.git
+== u-boot (linaro) ==
-cd to the x-loader-mainline directory
+ git clone git://git.linaro.org/boot/u-boot-linaro-stable.git
-Next, select the panda config:
+cd to the u-boot-linaro-stable directory and checkout tag 2011.11.2
-  make CROSS_COMPILE=Path_to_your/arm-2009q3/bin/arm-none-linux-gnueabi- omap4430panda_config
+  cd u-boot-linaro-stable
-Now compile MLO:
+Next, select the panda config. Make sure your cross compiler is in your $PATH:
-  make CROSS_COMPILE=Path_to_your/arm-2009q3/bin/arm-none-linux-gnueabi- ift
+  make CROSS_COMPILE=arm-none-linux-gnueabi- omap4_panda_config
-This should produce the MLO file in the x-loader-mainline directory.
+Change ttyS2 to ttyO2 in the u-boot kernel command line in: u-boot/include/configs/omap4_panda.h
-== u-boot ==
+Now compile U-boot:
-Now for U-boot:
-  git clone git://gitorious.org/pandaboard/u-boot-mainline.git
+  make CROSS_COMPILE=arm-none-linux-gnueabi-
-cd to the u-boot-mainline directory
+This should produce the files MLO and u-boot.img in the u-boot directory. Copy both files to your sd card.
-Next, select the panda config:
+== u-boot (mainline) ==
- make CROSS_COMPILE=Path_to_your/arm-2009q3/bin/arm-none-linux-gnueabi- omap4_panda_config
+Same as above but clone from denx.de:
-−
-Change ttyS2 to ttyO2 in the u-boot kernel command line in: u-boot/include/configs/omap4_panda.h (unless you are going to use boot.scr)
-−
-Now compile U-boot:
-  make USE_PRIVATE_LIBGG=yes CROSS_COMPILE=Path_to_your/arm-2009q3/bin/arm-none-linux-gnueabi-
+  git clone git://git.denx.de/u-boot.git
-This should produce u-boot.bin in the u-boot-mainline directory
+And checkout tag v2011.09:
 === boot.scr ===