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Add linker scripts

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This commit is contained in:
Szczepan Zalega 2019-08-06 16:45:12 +02:00
parent d618081dd0
commit beb5a5892c
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GPG Key ID: D9BAE35991DE5B22
2 changed files with 33 additions and 3 deletions
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13
targets/stm32l432/linker/bootloader_stm32l4xx.ld
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@ -12,9 +12,17 @@ _estack = 0x2000c000;
_MIN_STACK_SIZE = 0x400; _MIN_STACK_SIZE = 0x400;
/*
flash2 is for storing bootloader data, like last used firmware version.
_bconfig_start should be equal to (APPLICATION_START_PAGE-1) page address, from targets/stm32l432/src/memory_layout.h:30; and equal to flash2 origin
*/
_bconfig_start = 0x08000000 + 10*2048;
MEMORY MEMORY
{ {
flash (rx) : ORIGIN = 0x08000000, LENGTH = 20K flash (rx) : ORIGIN = 0x08000000, LENGTH = 20K
flash2 (rx) : ORIGIN = 0x08000000 + 10*2048, LENGTH = 2K
ram (xrw) : ORIGIN = 0x20000000, LENGTH = 48K ram (xrw) : ORIGIN = 0x20000000, LENGTH = 48K
sram2 (rw) : ORIGIN = 0x10000000, LENGTH = 16K sram2 (rw) : ORIGIN = 0x10000000, LENGTH = 16K
} }
@ -39,6 +47,11 @@ SECTIONS
_etext = .; _etext = .;
} >flash } >flash
.flag2 _bconfig_start :
{
KEEP(*(.flag2)) ;
} > flash2
_sidata = LOADADDR(.data); _sidata = LOADADDR(.data);
.data : .data :

23
targets/stm32l432/linker/stm32l4xx.ld
View File

@ -14,13 +14,23 @@ _MIN_STACK_SIZE = 0x400;
/* /*
Memory layout of device: Memory layout of device:
20 KB 198KB-8 38 KB 20+2 KB 198KB-2KB -8 38 KB
| bootloader | application | secrets/data | | bootloader | application | secrets/data |
Last 8 bytes in application space are occupied by bootloader flags - app
authorization and bootloader activation flag.
*/ */
/* Current firmware version number
Should be equal to (APPLICATION_END_ADDR-8) from targets/stm32l432/src/memory_layout.h:40 */
_version_start = 0x08000000 + (128-19)*2048-8-8;
/* flash length is (APPLICATION_END_PAGE-20*1024), where 20K is bootloader */
MEMORY MEMORY
{ {
flash (rx) : ORIGIN = 0x08005000, LENGTH = 198K - 8 flash (rx) : ORIGIN = 0x08005000 + 2K, LENGTH = 198K - 8 - 8 - 2K
flash_v (rx) : ORIGIN = 0x08000000 + (128-19)*2048 - 8 - 8, LENGTH = 8
ram (xrw) : ORIGIN = 0x20000000, LENGTH = 48K ram (xrw) : ORIGIN = 0x20000000, LENGTH = 48K
sram2 (rw) : ORIGIN = 0x10000000, LENGTH = 16K sram2 (rw) : ORIGIN = 0x10000000, LENGTH = 16K
} }
@ -47,6 +57,13 @@ SECTIONS
_sidata = LOADADDR(.data); _sidata = LOADADDR(.data);
.flag _version_start :
{
KEEP(*(.flag)) ;
} > flash_v
.data : .data :
{ {
. = ALIGN(8); . = ALIGN(8);