mirror of
https://github.com/licsber/micropython.git
synced 2024-09-21 01:20:23 +08:00
c65e5c88b8
The F429 has 256k total RAM, with 64k already set aside for flash write cache, so the uPy heap can be increased this much.
30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
/*
|
|
GNU linker script for STM32F429i-Discovery kit with external 8MByte SDRam
|
|
*/
|
|
|
|
/* Specify the memory areas */
|
|
MEMORY
|
|
{
|
|
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 2048K /* entire flash */
|
|
FLASH_ISR (rx) : ORIGIN = 0x08000000, LENGTH = 16K /* sector 0, 16 KiB */
|
|
FLASH_FS (rx) : ORIGIN = 0x08004000, LENGTH = 112K /* sectors 1-4: 3*16K+64K */
|
|
FLASH_TEXT (rx) : ORIGIN = 0x08020000, LENGTH = 896K /* sectors 5-11 are 128K */
|
|
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 192K
|
|
SDRAM(xrw) : ORIGIN = 0xC0000000, LENGTH = 8192K
|
|
}
|
|
|
|
/* produce a link error if there is not this amount of RAM for these sections */
|
|
_minimum_stack_size = 2K;
|
|
_minimum_heap_size = 16K;
|
|
|
|
/* Define tho top end of the stack. The stack is full descending so begins just
|
|
above last byte of RAM. Note that EABI requires the stack to be 8-byte
|
|
aligned for a call. */
|
|
_estack = ORIGIN(RAM) + LENGTH(RAM);
|
|
|
|
/* RAM extents for the garbage collector */
|
|
_ram_start = ORIGIN(RAM);
|
|
_ram_end = ORIGIN(RAM) + LENGTH(RAM);
|
|
_heap_start = _ebss; /* heap starts just after statically allocated memory */
|
|
_heap_end = 0x2002c000; /* tunable */
|