booting from flash str7

[prabath]

Posted on March 31, 2006 at 06:32

booting from flash str7

[prabath]

Posted on March 07, 2006 at 21:06

in project properties *link advanced does it ignore the Auto via file settings when I have a scatter file defined?

it does not seem to come up with flash memory control when I hit F5 when I have scatter file defined. But seems fine with Auto via file settings.

[aialinux]

Posted on March 08, 2006 at 20:32

Hi RISC,

I want to debug the code using ICE. I must place the code to ext sram 0x62000000.But i found something strangely. When I place the code to cpu sram 0x20000000, It works well. I relink the code to 0x62000000,and download the code to ext sram 0x62000000,It can't run to main function.

Another question,You said remap RAM to address 0 ,I have to enable the RAM remapping, therefore uncomment the GBLL remapping and GBLL remap_flash.

Why not uncomment the GBLL remapping and GBLL remap_ram?

uncomment remap_flash means remap cpu flash 0x400000000 to 0x0000, and does't remap cpu sram 0x20000000 to 0x0000.

[ This message was edited by: dom on 09-03-2006 03:05 ]

[prabath]

Posted on March 09, 2006 at 17:08

ok I wrote some code to copy all the contents from the flash to ram... do I place this code before the GBLL remap? or is it the first instruction before the resethandler?

LDR R1, =FLASHBASE ;FLASH START ADDR

LDR R2, =RAMB ;RAM STAR ADDR

LDR R3, =RAML ;RAM END ADDR

COPY CMP R2, R3

LDRLO R0,[R1],#4

STRLO R0,[R2],#4

BLO COPY

well i want to start from flash====>copy to ram=====>remap ram to 0x0000

[aialinux]

Posted on March 09, 2006 at 20:27

Hi RISC,

I have enable the EMI Bank 1 using the EMI_config.inc file.

I can download the code to EXT SRAM 0X62000000. But It can run to main.

[aialinux]

Posted on March 10, 2006 at 10:20

Hi RISC,

Here is my scat file.

I want to download and debug my program to ext sram 0x62000000.

I can't go to main function and the debug says ''DBT Warning 00135: Cannot set breakpoints in literal pools''

When i try to step to B __main. I don't what's wrong!

When relink the program to cpu sram 0x20000000 It works well.

[aialinux]

Posted on March 10, 2006 at 22:54

Here is my project.

I am using ADS1.2

using ****_cpu_sram to link,the program works well

but using ****_ext_sram to link, the program can't go to main.

The debug says ''DBT Warning 00135: Cannot set breakpoints in literal pools''.

________________

Attachments :

str7.rar : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HtBy&d=%2Fa%2F0X0000000aK9%2FQqAFJq0b3I_KzBKNacRIBG0v1SlUYcXdUybHdZY9JCs&asPdf=false

[prabath]

Posted on March 30, 2006 at 19:49

Quote:

On 10-03-2006 at 09:58, Anonymous wrote:

@Dom, could you send me your scatter file.

@fixxer, You do not need to copy the code from FLASH to RAM by hand. With an appropriate scatter file the __main will copy the code from FLASH to RAM.

Here an example of scatter file:

FLASH 0x40000000 0x40000

{

FLASH 0x40000000

{

71x_init.o (Init,+First)

* (InRoot$$Sections)

}

RAM 0x20000000 0x10000000

{

71x_vect.o (Vect, +First)

* (+RO)

* (+RW)

* (+ZI)

}

}

In your init.s file you should have the following instruction at the beginning:

Reset_Handler

LDR pc, =NextInst

NextInst

NOP

NOP

NOP

:

:

RAM_remapping

B __main

Regards.

Hi what goes in * (InRoot$$Sections) ?

I made some good progress, can boot from flash, but stack pointers seem to get confused, while running from flash.

[prabath]

Posted on March 30, 2006 at 20:56

This is my MMAP

Image Entry point : 0x40000000

Load Region FLASH (Base: 0x40000000, Size: 0x0000677c, Max: 0x00040000, ABSOLUTE)

Execution Region FLASH (Base: 0x40000000, Size: 0x00005db4, Max: 0xffffffff, ABSOLUTE)

Base Addr Size Type Attr Idx E Section Name Object

0x40000000 0x0000012c Code RO 412 * Init 71x_init.o

0x4000012c 0x00000008 Code RO 415 * !!!main __main.o(c_a__un.l)

0x40000134 0x00000038 Code RO 470 !!!scatter __scatter.o(c_a__un.l)

0x4000016c 0x0000006c Code RO 468 !!dczerorl2 __dczerorl2.o(c_a__un.l)

0x400001d8 0x00000028 Code RO 472 !!handler_copy __scatter_copy.o(c_a__un.l)

0x40000200 0x0000002c Code RO 474 !!handler_zi __scatter_zi.o(c_a__un.l)

Execution Region RAM (Base: 0x20000000, Size: 0x00006294, Max: 0xffffffff, ABSOLUTE, COMPRESSED[0x000001d8])

Base Addr Size Type Attr Idx E Section Name Object

0x20000000 0x000004c0 Code RO 405 * Vect 71x_vect.o

[aialinux]

Posted on March 30, 2006 at 23:16

Thank you!