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circuitpython/ports/stm32/boards/stm32f405.ld

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Initial checkin with STM HAL This compiles and links, but hasn't been tested on a board yet and even if it was run, it doesn't currently do anything.
2014-03-12 02:55:41 -04:00
/*
GNU linker script for STM32F405
*/
/* Specify the memory areas */
MEMORY
{
stmhal/boards/stm32f405.ld: Increase FLASH_TEXT to end of 1MiB flash. And and FLASH_FS, and use "K" values instead of hex numbers for lengths. The increase of FLASH_TEXT is to allow more frozen bytecode for a particular user's project. It's not used for anything else.
2017-06-26 03:00:06 -04:00
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 1024K /* entire flash */
FLASH_ISR (rx) : ORIGIN = 0x08000000, LENGTH = 16K /* sector 0 */
FLASH_FS (rx) : ORIGIN = 0x08004000, LENGTH = 112K /* sectors 1,2,3,4 are for filesystem */
FLASH_TEXT (rx) : ORIGIN = 0x08020000, LENGTH = 896K /* sectors 5,6,7,8,9,10,11 */
CCMRAM (xrw) : ORIGIN = 0x10000000, LENGTH = 64K
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 128K
Initial checkin with STM HAL This compiles and links, but hasn't been tested on a board yet and even if it was run, it doesn't currently do anything.
2014-03-12 02:55:41 -04:00
}
stmhal: Set entry point for ELF binary debugging When loading the ELF binary to the board with a debugger, the debugger needs to know at which point to start executing the code. Currently the entry point defaults to the start of the .text section. Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
2014-10-21 04:22:53 -04:00
Initial checkin with STM HAL This compiles and links, but hasn't been tested on a board yet and even if it was run, it doesn't currently do anything.
2014-03-12 02:55:41 -04:00
/* produce a link error if there is not this amount of RAM for these sections */
_minimum_stack_size = 2K;
_minimum_heap_size = 16K;
all: Remove trailing spaces, per coding conventions.
2017-07-18 23:12:10 -04:00
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 10:43:38 -04:00
/* 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 07:26:03 -04:00
_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 10:43:38 -04:00
_sstack = _estack - 16K; /* tunable */
Initial checkin with STM HAL This compiles and links, but hasn't been tested on a board yet and even if it was run, it doesn't currently do anything.
2014-03-12 02:55:41 -04:00
/* RAM extents for the garbage collector */
stmhal: Put common definitions from linker files to common.ld.
2016-09-21 05:49:45 -04:00
_ram_start = ORIGIN(RAM);
Initial checkin with STM HAL This compiles and links, but hasn't been tested on a board yet and even if it was run, it doesn't currently do anything.
2014-03-12 02:55:41 -04:00
_ram_end = ORIGIN(RAM) + LENGTH(RAM);
stmhal: Put common definitions from linker files to common.ld.
2016-09-21 05:49:45 -04:00
_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 10:43:38 -04:00
_heap_end = _sstack;