MCUXpresso SDK中的主题 LPC54606 Undeclared memory region

LPC54606 Undeclared memory region

j3ll3 — Sun, 03 Mar 2019 07:56:07 GMT

Hello all,

When using the MCUXpresso SDK 2.5 with arm embedded GCC compiler I believe there is a bug in the LPC54606 linker file.

The following memory areas are declared:

/* Specify the memory areas */
MEMORY
{
m_interrupts (RX) : ORIGIN = 0x00000000, LENGTH = 0x00000400
m_text (RX) : ORIGIN = 0x00000400, LENGTH = 0x0007FC00
m_data (RW) : ORIGIN = 0x20000000, LENGTH = 0x00028000
m_sramx (RW) : ORIGIN = 0x04000000, LENGTH = 0x00008000
m_usb_sram (RW) : ORIGIN = 0x40100000, LENGTH = 0x00002000
}

But there is a mapping to the memory area "m_data_3" that does not exist:

/* Initializes stack on the end of block */
__StackTop = ORIGIN(m_data_3) + LENGTH(m_data_3);
__StackLimit = __StackTop - STACK_SIZE;
PROVIDE(__stack = __StackTop);

This results in the following GCC linker warning:

LPC54606J512_flash.ld:183: warning: memory region `m_data_3' not declared

The code does not work since the stack is now undefined. As workaround I use the LPC54608J512 linker file which works but it is not the best solution.

Re: LPC54606 Undeclared memory region

ZhangJennie — Mon, 04 Mar 2019 08:52:08 GMT

Hi Jelle,

I will contact designer for this issue. I will keep you informed.

Have a nice day,

Jun Zhang

Re: LPC54606 Undeclared memory region

ZhangJennie — Thu, 21 Mar 2019 09:35:25 GMT

Hi Jelle,

This defect will be fixed in next release.

Thank you for bringing the problem to our attention.

Have a great day,
Jun Zhang

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