Hi, All
Are there any patch for u-boot-2009.08, which support booting the u-boot from NAND on imx28evk?
The u-boot source code(u-boot-2009.08) comes from L2.6.31_10.05.02_source.tar.gz -> u-boot-2009.08.tar.bz2 with patch u-boot-v2009.08-imx_10.05.02.tar.bz2. Please let me know if any body is doing similar work of nand booting of u-boot on mx28evk. Thanks!
BR
Cheng Shi
emtronix
Hi Wolfgang
This is the first time for me to use git:
(1) git clone git://git.denx.de/u-boot-imx.git u-boot-imx
(2) modifiy Makefile, setup CROSS_COMPILE = arm-none-linux-gnueabi-, and export it
(3) make mx28evk_config
(4) make -> build is OK
All the steps are allright? another question: how to get new patch in future? Thanks
BR
Cheng Shi
Wolfgang F. Gaerber said:
Hi Cheng,
I would highly recommend to use an actual uboot from denx page.
Configuring and building is straight forward.
.. support for ubi(fs) mount usb, spi flashes ... and so on.
rgds.
Hi Wolfgang
Thanks for your suggestion. I just dowloaded u-boot-2012.04.tar.bz2. Is it the latest one? I'm beginner to linux community.
BR
Cheng Shi
Wolfgang F. Gaerber said:
Hi Cheng,
I would highly recommend to use an actual uboot from denx page.
Configuring and building is straight forward.
.. support for ubi(fs) mount usb, spi flashes ... and so on.
rgds.
Hi Rodrigue
Actually I got confused with "$ flash_eraseall /dev/mtd0" as no partition at all before programming u-boot. I used u-boot-1.3.4 in a project a few years ago. no partition issue in that u-boot. Before I started linux project, I have just finished CE6.0 on my imx28 based board, so I just use the same way to program uboot_ivt.sb just like eboot_ivt.sb, it works. With this way, at least I know where the sb is programmed in, but I can not figure out where ROM load u-boot in SDRAM.
BR
Rodrigue said:
Hi Cheng,
in your xml file do like this:
<CMD type="push" body="$ flash_eraseall /dev/mtd0">Erasing rootfs partition 0</CMD>
<CMD type="push" body="$ flash_eraseall /dev/mtd1">Erasing rootfs partition 1</CMD>
<CMD type="push" body="send" file="files/imx28_ivt_uboot.sb" >Sending Firmware</CMD>
<CMD type="push" body="$ kobs-ng init $FILE">Flashing firmware</CMD>keep in mind that you need kobs-ng to flash uboot (as sb format) in the nand.
I just did it and it works.
Hi Cheng,
I would highly recommend to use an actual uboot from denx page.
Configuring and building is straight forward.
.. support for ubi(fs) mount usb, spi flashes ... and so on.
rgds.
Hi Cheng,
in your xml file do like this:
<CMD type="push" body="$ flash_eraseall /dev/mtd0">Erasing rootfs partition 0</CMD>
<CMD type="push" body="$ flash_eraseall /dev/mtd1">Erasing rootfs partition 1</CMD>
<CMD type="push" body="send" file="files/imx28_ivt_uboot.sb" >Sending Firmware</CMD>
<CMD type="push" body="$ kobs-ng init $FILE">Flashing firmware</CMD>
keep in mind that you need kobs-ng to flash uboot (as sb format) in the nand.
I just did it and it works.
Hi Rodrigue,
Thanks for your reply. I did use this L2.6.35_10.12.01_SDK_source_bundle.tar, and I modified the config setting in mx28_evk.h, but I don't know how to ucl.xml of MfgTool, the original ucl.xml is for linux_ivt.sb only. Are there any doc available?
BTW uboot.bd:
sources {
power_prep="./power_prep/power_prep";
sdram_prep="./boot_prep/boot_prep";
u_boot = "./u-boot";
}
section (0) {
//----------------------------------------------------------
// Power Supply initialization
//----------------------------------------------------------
load power_prep;
call power_prep;
//----------------------------------------------------------
// SDRAM initialization
//----------------------------------------------------------
load sdram_prep;
call sdram_prep;
//----------------------------------------------------------
// Load and call u_boot - ELF ARM image
//----------------------------------------------------------
load u_boot;
call u_boot;
}
Why "call u_boot" instead of jump? As no address is include, how can I know the SDRAM address that u-boot loaded by ROM?
In CE6.0, there are always SDRAM addresses included in sb file, for example
#
# Copyright (C) 2010, Freescale Semiconductor, Inc. All Rights Reserved.
# THIS SOURCE CODE, AND ITS USE AND DISTRIBUTION, IS SUBJECT TO THE TERMS
# AND CONDITIONS OF THE APPLICABLE LICENSE AGREEMENT
#
options {
driveTag = 0x00;
flags = 0x01;
}
constants {
xldr_addr = 0x00000004;
eboot_addr = 0x40050000;
bmp_addr = 0x40094000;
}
sources {
xldr = "xldr.nb0";
eboot = "eboot.nb0";
bmp = "splash_eboot.bmp";
}
section (0) {
load xldr > xldr_addr;
call xldr_addr;
load bmp > bmp_addr;
load eboot > eboot_addr;
jump eboot_addr;
}
Hi Cheng,
Why don't you use the latest SDK based on 2.6.35
I did boot from NAND with uboot on this release and it works fine on the EVK.
Hi Rodrigue,
can you please post your mx28_evk.h config file to compile u-boot for NAND support?
I'm facing compiling error regarding MMC ...that I disabled in order to save environment vars into nand!
Sergio