答复: freescale-mx28-evk run from ram

["duhuanpeng" <548708880@qq.com>]

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Hi, this is the output for barebox-freescale-mx28evk-2nd.img

Load to address 0x00000000
- - -
Loading: *
Abort
MX28 U-Boot > tftpboot 0 barebox-freescale-mx28evk-2nd.img
Using FEC0 device
TFTP from server 192.168.12.61; our IP address is 192.168.12.62
Filename 'barebox-freescale-mx28evk-2nd.img'.
Load address: 0x0
Loading: T #################
done
Bytes transferred = 237766 (3a0c6 hex)
MX28 U-Boot > go 0
## Starting application at 0x00000000 ...

- - -

Load to address 0x41600000:
- - -
MX28 U-Boot > tftpboot barebox-freescale-mx28evk-2nd.img
Using FEC0 device
TFTP from server 192.168.12.61; our IP address is 192.168.12.62
Filename 'barebox-freescale-mx28evk-2nd.img'.
Load address: 0x41600000
Loading: T #################
done
Bytes transferred = 237766 (3a0c6 hex)
MX28 U-Boot > go 0x41600000
## Starting application at 0x41600000 ...

- - - -

This macro is on CONFIG_PBL_RELOCATABLE
#
# memory layout
#
CONFIG_HAVE_PBL_IMAGE=y
CONFIG_HAVE_PBL_MULTI_IMAGES=y
CONFIG_HAVE_IMAGE_COMPRESSION=y
CONFIG_PBL_IMAGE=y
CONFIG_PBL_MULTI_IMAGES=y
CONFIG_PBL_RELOCATABLE=y

-----ÓʼþÔ­¼þ-----
·¢¼þÈË: Sascha Hauer [mailto:s.hauer@pengutronix.de] 
·¢ËÍʱ¼ä: 2018Äê3ÔÂ2ÈÕ 15:37
ÊÕ¼þÈË: duhuanpeng
³­ËÍ: barebox@lists.infradead.org
Ö÷Ìâ: Re: freescale-mx28-evk run from ram

Hi Du Huanpeng,

On Fri, Mar 02, 2018 at 12:30:37AM +0800, duhuanpeng wrote:
> Dear all,
> 
> Happy Yuanxiao(Lantern) Festival!

Thanks, same to you. Just googled some pictures for the lantern Festival, it
must look amazing to stand under that many lanterns ;)

> In System.map
> 00000000 T __image_start
> 00000000 T start
> 00000000 T _stext
> 00000000 T _text
> 00000004 T __bare_init_start
> 00000004 T get_runtime_offset
> 00000014 t linkadr
> 00000018 T __ld_var_base
> 00000018 T __ld_var__text
> 00000020 t ___text
> 00000024 T __ld_var___rel_dyn_start
> 0000002c t ____rel_dyn_start
> 00000030 T __ld_var___rel_dyn_end
> 00000038 t ____rel_dyn_end
> 0000003c T __ld_var___dynsym_start
> 00000044 t ____dynsym_start
> 00000048 T __ld_var___dynsym_end
> 00000050 t ____dynsym_end
> 00000054 T __ld_var___bss_start
> 0000005c t ____bss_start
> 00000060 T __ld_var___bss_stop
> 00000068 t ____bss_stop
> 
> So, I load barebox.bin to address 0x00000000:

> I assume you use freescale-mx28-evk_defconfig, right?
Yes.

Which image do you start? It seems you are trying to start barebox.bin.
> barebox.bin and barebox-freescale-mx28evk-2nd.img
It should be images/barebox-freescale-mx28evk-2nd.img instead.

The image should be linked to 0x0, that is right. The code is position
independent though and the full barebox relocates itself to the end of the
available SDRAM automatically. TEXT_BASE is not relevant here.
The start symbol is still 0x00000000 even I change TEXT_BASE in menuconfig.
my board have 64MiB ram. Modified board. 
Very cheap one, just 33€. :D
EasyARM-i.MX283A
http://www.zlg.cn/ipc/ipc/product/id/92.html
http://www.zlg.cn/ipc/down/down/id/92.html

This board has a LCD(480*800?), I want to test font support on this board.

The sch is here:
https://drive.google.com/open?id=1_3xW7nfQ6p9tnkjZEDK9vZiLlUnat25K

There are many pcf fonts here:
https://www.netsarang.com/download/main.html

and maybe use code from freetype? 
http://www.freetype.org/

Sascha

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