CodeWarrior for MCUのトピックRe: LCF file, locate default .text code into multiple sections

LCF file, locate default .text code into multiple sections

leccy — Fri, 05 Jun 2015 08:16:30 GMT

I have a project which requires a routine to be located at a particular address in internal flash, to be accessed from a legacy boot-loader program.

This address lies in the middle of the memory range.

I would like to be able to create a section either side of this address.

The default LCF entry for .text is:

.text :

{

* (.text)

. = ALIGN(0x4);

* (.rodata)

. = ALIGN(0x4);

___ROM_AT = .;

___DATA_ROM = .;

} > m_text

I have had to define the m_text section as:

m_text

(RX) : ORIGIN = 0x0000C410, LENGTH = 0x00053BF0

to accommodate the boot-loader routine section which appears directly after this section.

I would like to define another section, say m_text_2, above this section to leave my boot-loader routine section intact.

Is it possible to have the linker place .text into 2 sections automatically?

I would prefer to not have to change the address of the boot-loader routine to maintain units in the field.

Many thanks

Alex

Re: LCF file, locate default .text code into multiple sections

ZhangJennie — Fri, 05 Jun 2015 08:47:58 GMT

Hi Alex,

the answer depends on what chip and CW version you work with?

if kinetis, you use CW FSL ARM compiler, right?

Have a great day,
Zhang Jun

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Re: LCF file, locate default .text code into multiple sections

leccy — Mon, 08 Jun 2015 15:13:21 GMT

It is Kinetis, on CW10.3, FSL ARM compiler.

Re: LCF file, locate default .text code into multiple sections

ZhangJennie — Tue, 09 Jun 2015 07:37:54 GMT

Hi Alex

I think an4489 should include the information you need. can you please check it
http://cache.freescale.com/files/soft_dev_tools/doc/app_note/AN4498.pdf

can this help you?

Have a great day,
Zhang Jun