TMS570LC4357: tms570lc4357

kusuma CM

Part Number: TMS570LC4357

Tool/software:

I'm working on the TMS570LC4357, and I need to load my application into flash and execute it from RAM.

I want to achieve this using the linker script. How can this be done?

I already know how to handle section-wise copying, but after my startup code executes, I need the execution to continue from RAM after entering main()

This is my application linker

/* Linker Settings */

--retain="*(.intvecs)"

/* USER CODE BEGIN (1) */
/* USER CODE END */

/*----------------------------------------------------------------------------*/
/* Memory Map */

MEMORY
{
/* USER CODE BEGIN (2) */
/* USER CODE END */
VECTORS (X) : origin=0x00200000 length=0x00000020
//FLASH0 (RX) : origin=0x00000000 length=0x00200000
FLASH1 (RX) : origin=0x00200020 length=0x001FFFE00
STACKS (RW) : origin=0x08000000 length=0x00001500
RAM (RWX) : origin=0x08001500 length=0x00040000

/* USER CODE BEGIN (3) */
/* USER CODE END */
}

/* USER CODE BEGIN (4) */
/* USER CODE END */

/*----------------------------------------------------------------------------*/
/* Section Configuration */

SECTIONS
{
/* USER CODE BEGIN (5) */
/* USER CODE END */
.intvecs : {} > VECTORS
.text align(32) : {} > FLASH1
.const align(32) : {} > FLASH1
.cinit align(32) : {} > FLASH1
.pinit align(32) : {} > FLASH1
.bss : {} > RAM
.data : {} > RAM
.sysmem : {} > RAM

/* USER CODE BEGIN (6) */
/* USER CODE END */

Thanks

5 months ago

0 jagadish gundavarapu 5 months ago

TI__Guru 69891 points

Hi Kusuma,

Can you please download and refer the CAN bootloader example that i highlighted below:

(+) [FAQ] TMS570LC4357: Examples and Demos available for Hercules Controllers (E.g. TMS570x, RM57x and RM46x etc) - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

And this example is also for TMS570LC4357, and here also we are copying FAPI library to the RAM. So, this might be useful for you.

--
Thanks & regards,
Jagadish.

0 kusuma CM 5 months ago in reply to jagadish gundavarapu

Prodigy 30 points

Yes, I am able to copy the Flash API to RAM and execute it. However, I also want to copy and run the .text section in RAM.

I am facing an issue with the following error:

Description Resource Path Location Type
#10099-D program will not fit into available memory, or the section contains a call site that requires a trampoline that can't be generated for this section. placement with alignment fails for section ".intvecs" size 0x20. Available memory ranges: HL_sys_link.cmd

However, my .text section size is small enough to fit into RAM.

This is my linker

MEMORY
{
/* USER CODE BEGIN (2) */
/* USER CODE END */
VECTORS (X) : origin=0x00200000 length=0x00000020
// FLASH0 (RX) : origin=0x00000020 length=0x001FFFE0
FLASH1 (RX) : origin=0x00200020 length=0x00200000
STACKS (RW) : origin=0x08000000 length=0x00001500
RAM (RW) : origin=0x08001500 length=0x0007EB00

/* USER CODE BEGIN (3) */
/* USER CODE END */
}

/* USER CODE BEGIN (4) */
/* USER CODE END */

/*----------------------------------------------------------------------------*/
/* Section Configuration */

SECTIONS
{
/* USER CODE BEGIN (5) */
/* USER CODE END */
.intvecs : {} > VECTORS
//.text align(32) : {} > FLASH1
#if 1
.text :
{
*(.text) /* All text (code) sections */
*(.text.*) /* Any text subsections */
} LOAD = FLASH1, RUN = RAM
LOAD_START(TextLoadStart), LOAD_END(TextLoadEnd), LOAD_SIZE(TextSize),
RUN_START(TextRunStart), RUN_END(TextRunEnd)
#endif
.const align(32) : {} > FLASH1
.cinit align(32) : {} > FLASH1
.pinit align(32) : {} > FLASH1
.bss : {} > RAM
.data : {} > RAM
.sysmem : {} > RAM

}

Please help me on this

Thanks

0 jagadish gundavarapu 3 months ago in reply to kusuma CM

TI__Guru 69891 points

Hi Kusuma,

The reason for unlocking this thread is that it is not closed properly from TI side, so i unlocked it again.

Apologies for the inconvenience.

Are you still stuck with this issue, if yes then please let me know exactly where you stuck with this now.

--
Thanks & regards,
Jagadish.