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Boot linker edits

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This commit is contained in:
Hierophect 2020-01-04 16:23:36 -05:00
parent 53238ad9b2
commit f355642eab
2 changed files with 55 additions and 16 deletions
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65
ports/stm32f4/boards/STM32F401.ld
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@ -1,28 +1,52 @@
/*
GNU linker script for STM32F401 with bootloader (such as the Meowbit)
GNU linker script for STM32F401 with bootloader (from Meowbit Micropython)
Doesn't work:
Traceback (most recent call last):
File "../../tools/build_memory_info.py", line 64, in <module>
regions[region] = int(eval(space))
File "<string>", line 1, in <module>
NameError: name 'FLASH_ISR' is not defined
*/
/* Specify the memory areas */
/* FLASH_FS (rx) : ORIGIN = 0x08020000, LENGTH = 128K */
/* sectors 5 128K */
MEMORY
{
FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 512K - 64K /* entire flash, sans bootloader */
FLASH_ISR (rx) : ORIGIN = 0x08000000, LENGTH = 64K /* sector 4, 0-3 used by bootloader*/
FLASH_TEXT (rx) : ORIGIN = 0x08010000, LENGTH = 384K /* sector 4 is 64K, sectors 5,6,7 are 128K */
RAM (xrw) : ORIGIN = 0x20000194, LENGTH = 96K - 0x194 /* more bootloader schnenaigans */
FLASH (rx) : ORIGIN = 0x08010000, LENGTH = 512K - 64K /* entire flash */
FLASH_ISR (rx) : ORIGIN = 0x08010000, LENGTH = 64K /* sector 4, sec 0~3 reserved for booloader */
FLASH_TEXT (rx) : ORIGIN = 0x08020000, LENGTH = 384K /* sectors 5, 6,7 are 128K */
RAM (xrw) : ORIGIN = 0x20000194, LENGTH = 96K - 0x194
}
/* 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);
/* 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. */
_estack = ORIGIN(RAM) + LENGTH(RAM) - _estack_reserve;
_sstack = _estack - 16K; /* tunable */
/* 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 = _sstack;
/* Memory layout for internal flash storage configuration:
FLASH_ISR .isr_vector
FLASH_TEXT .text
FLASH_TEXT .data
RAM .data
RAM .bss
RAM .heap
RAM .stack
*/
ENTRY(Reset_Handler)
@ -36,8 +60,25 @@ SECTIONS
KEEP(*(.isr_vector)) /* Startup code */
/* This first flash block is 16K annd the isr vectors only take up
about 400 bytes. Micropython pads this with files, but this didn't
work with the size of Circuitpython's ff object. */
about 400 bytes. So we pull in a couple of object files to pad it
out. */
. = ALIGN(4);
/* NOTE: If you update the list of files contained in .isr_vector,
then be sure to also update smhal/Makefile where it forcibly
builds each of these files with -Os */
*/ff.o(.text*)
*/vfs_fat_*.o(.text*)
*/py/formatfloat.o(.text*)
*/py/parsenum.o(.text*)
*/py/mpprint.o(.text*)
*/py/compile.o(.text*)
*/py/objset.o(.text*)
*/py/mpz.o(.text*)
*/py/vm.o(.text*)
. = ALIGN(4);
} >FLASH_ISR
@ -102,5 +143,3 @@ SECTIONS
.ARM.attributes 0 : { *(.ARM.attributes) }
}

6
ports/stm32f4/boards/STM32F401_boot.ld
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@ -5,10 +5,10 @@
/* Specify the memory areas */
MEMORY
{
FLASH (rx) : ORIGIN = 0x08010000, LENGTH = 512K - 64K /* entire flash, sans bootloader */
FLASH_ISR (rx) : ORIGIN = 0x08010000, LENGTH = 64K /* sector 4, 0-3 used by bootloader*/
FLASH (rx) : ORIGIN = 0x08010000, LENGTH = 512K - 64K /* entire flash */
FLASH_ISR (rx) : ORIGIN = 0x08010000, LENGTH = 64K
FLASH_TEXT (rx) : ORIGIN = 0x08020000, LENGTH = 384K /* sector 4 is 64K, sectors 5,6,7 are 128K */
RAM (xrw) : ORIGIN = 0x20000194, LENGTH = 96K - 0x194 /* more bootloader schnenaigans */
RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 96K
}
/* produce a link error if there is not this amount of RAM for these sections */