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Rewrote crt0, init, and chainloading code

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start.s, init.c, linker.ld and linker.specs are meant
to be re-used by user applications, should they remove the defines
from init.c and the .chainloader* sections from the linker script
This commit is contained in:
TuxSH
2018-05-07 23:32:45 +02:00
parent 699ddfc043
commit e8306361f0
29 changed files with 848 additions and 185 deletions
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23
fusee/fusee-secondary/linker.ld
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@@ -7,12 +7,17 @@ MEMORY
{
NULL : ORIGIN = 0x00000000, LENGTH = 0x1000
main : ORIGIN = 0xFFF00000, LENGTH = 0x00100000
low_iram : ORIGIN = 0x40003000, LENGTH = 0x4000
low_iram : ORIGIN = 0x40003000, LENGTH = 0x8000
}
SECTIONS
{
PROVIDE(__start__ = 0xFFF00000);
PROVIDE(__start__ = 0xF0000000);
PROVIDE(__stack_top__ = 0x40010000);
PROVIDE(__stack_bottom__ = 0x4000C000);
PROVIDE(__heap_start__ = 0xE0000000);
PROVIDE(__heap_end__ = 0xF0000000);
. = __start__;
. = ALIGN(32);
@@ -24,18 +29,26 @@ SECTIONS
. = ALIGN(4);
} >main
.chainloader :
.chainloader_loadable :
{
. = ALIGN(32);
PROVIDE (__chainloader_start = .);
PROVIDE (__chainloader_start__ = .);
PROVIDE (__chainloader_lma__ = LOADADDR(.chainloader_loadable));
KEEP(*(.chainloader.text.start))
build/chainloader.o(.text*)
build/chainloader.o(.rodata*)
build/chainloader.o(.data*)
. = ALIGN(8);
} >low_iram AT>main
.chainloader_bss :
{
. = ALIGN(8);
PROVIDE (__chainloader_bss_start__ = .);
build/chainloader.o(.bss* COMMON)
. = ALIGN(8);
PROVIDE (__chainloader_end = .);
PROVIDE (__chainloader_end__ = .);
} >low_iram AT>main
.text :