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micropython/ports/stm32/boards/stm32f413xh.ld

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stm32: Add support for F413 MCUs. Includes: - Support for CAN3. - Support for UART9 and UART10. - stm32f413xg.ld and stm32f413xh.ld linker scripts. - stm32f413_af.csv alternate function mapping. - startup_stm32f413xx.s because F413 has different interrupt vector table. - Memory configuration with: 240K filesystem, 240K heap, 16K stack.
2019-04-19 06:15:18 +01:00
/*
GNU linker script for STM32F413xh (1.5MB flash, 320kB RAM)
*/
/* Specify the memory areas */
/* FLASH_FS2 is placed before FLASH_TEXT to support 1MB and 1.5MB FLASH with common code in flashbdev.c */
MEMORY
{
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1536K /* entire flash */
FLASH_ISR (rx) : ORIGIN = 0x08000000, LENGTH = 16K /* sector 0 */
FLASH_FS (rx) : ORIGIN = 0x08004000, LENGTH = 176K /* sectors 1,2,3 are 16K, 4 is 64K, 5 is 128K (64K used) for filesystem */
FLASH_FS2 (rx) : ORIGIN = 0x08040000, LENGTH = 128K /* sector 6 is 128K (64K used) for filesystem, Total filesystem 240K */
FLASH_TEXT (rx) : ORIGIN = 0x08060000, LENGTH = 1152K /* sectors 7,8,9,10,11,12,13,14,15 are 128K*/
SRAM2 (xrw) : ORIGIN = 0x10000000, LENGTH = 64K
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 256K
}
/* produce a link error if there is not this amount of RAM for these sections */
_minimum_stack_size = 2K;
_minimum_heap_size = 16K;
stm32: In link script, define start of stack separately from heap end. Previously the end of the heap was the start (lowest address) of the stack. With the changes in this commit these addresses are now independent, allowing a board to place the heap and stack in separate locations.
2019-05-14 15:43:38 +01:00
/* Define 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. */
stm32: Enter bootloader via a system reset. Entering a bootloader (ST system bootloader, or custom mboot) from software by directly branching to it is not reliable, and the reliability of it working can depend on the peripherals that were enabled by the application code. It's also not possible to branch to a bootloader if the WDT is enabled (unless the bootloader has specific provisions to feed the WDT). This patch changes the way a bootloader is entered from software by first doing a complete system reset, then branching to the desired bootloader early on in the start-up process. The top two words of RAM (of the stack) are reserved to store flags indicating that the bootloader should be entered after a reset.
2019-06-22 12:26:03 +01:00
_estack = ORIGIN(RAM) + LENGTH(RAM) - _estack_reserve;
stm32: In link script, define start of stack separately from heap end. Previously the end of the heap was the start (lowest address) of the stack. With the changes in this commit these addresses are now independent, allowing a board to place the heap and stack in separate locations.
2019-05-14 15:43:38 +01:00
_sstack = _estack - 16K; /* tunable */
stm32: Add support for F413 MCUs. Includes: - Support for CAN3. - Support for UART9 and UART10. - stm32f413xg.ld and stm32f413xh.ld linker scripts. - stm32f413_af.csv alternate function mapping. - startup_stm32f413xx.s because F413 has different interrupt vector table. - Memory configuration with: 240K filesystem, 240K heap, 16K stack.
2019-04-19 06:15:18 +01:00
/* 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 */
stm32: In link script, define start of stack separately from heap end. Previously the end of the heap was the start (lowest address) of the stack. With the changes in this commit these addresses are now independent, allowing a board to place the heap and stack in separate locations.
2019-05-14 15:43:38 +01:00
_heap_end = _sstack;