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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-11-15 20:47:22 +0100 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-11-19 07:15:47 +0100 |
| commit | 84e59b7c04e47c3ec7aa95f53509fd812eee725e (patch) | |
| tree | 8dd2b9325e2a8d897085593ea52dc123d18f2ead /bsps/powerpc/shared | |
| parent | bsps/m68k: Use interrupt stack for init stack (diff) | |
| download | rtems-84e59b7c04e47c3ec7aa95f53509fd812eee725e.tar.bz2 | |
bsps/powerpc: Use interrupt stack for init stack
Move start.o to separate file.
Update #3459.
Diffstat (limited to 'bsps/powerpc/shared')
| -rw-r--r-- | bsps/powerpc/shared/start/linkcmds.share | 3 | ||||
| -rw-r--r-- | bsps/powerpc/shared/start/start.S | 27 |
2 files changed, 9 insertions, 21 deletions
diff --git a/bsps/powerpc/shared/start/linkcmds.share b/bsps/powerpc/shared/start/linkcmds.share index e2a3a16fbe..2fc66015cb 100644 --- a/bsps/powerpc/shared/start/linkcmds.share +++ b/bsps/powerpc/shared/start/linkcmds.share @@ -3,7 +3,6 @@ OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", OUTPUT_ARCH(powerpc) /* Do we need any of these for elf? __DYNAMIC = 0; */ -PROVIDE (__stack = 0); MEMORY { VECTORS : ORIGIN = 0x0 , LENGTH = 0x3000 CODE : ORIGIN = 0x3000 , LENGTH = 32M - 0x3000 @@ -247,8 +246,6 @@ SECTIONS PROVIDE (__bss_end = .); } > CODE . = ALIGN(16); - . += 0x1000; - __stack = .; _end = . ; __rtems_end = . ; PROVIDE (end = .); diff --git a/bsps/powerpc/shared/start/start.S b/bsps/powerpc/shared/start/start.S index 354b9a967e..faffaf9f31 100644 --- a/bsps/powerpc/shared/start/start.S +++ b/bsps/powerpc/shared/start/start.S @@ -10,8 +10,7 @@ */ #include <rtems/asm.h> -#include <rtems/score/cpu.h> -#include <rtems/powerpc/powerpc.h> +#include <libcpu/powerpc-utility.h> #include <libcpu/io.h> #include <libcpu/bat.h> @@ -133,24 +132,16 @@ enter_C_code: mr r6,r28 mr r7,r27 bl save_boot_params + /* - * stack = &__rtems_end + 4096 - */ - addis r9,r0, __stack-PPC_MINIMUM_STACK_FRAME_SIZE@ha - addi r9,r9, __stack-PPC_MINIMUM_STACK_FRAME_SIZE@l - /* - * align initial stack - * (we hope that the bootloader stack was 16-byte aligned - * or we haven't used altivec yet...) - */ - li r0, (CPU_STACK_ALIGNMENT-1) - andc r1, r9, r0 - /* - * Tag TOS with a NULL (terminator for stack dump) + * Initialize start stack. The stacks are statically allocated and + * properly aligned. */ - li r0, 0 - stw r0, 0(r1) - + LA r1, _ISR_Stack_area_end + subi r1, r1, PPC_DEFAULT_CACHE_LINE_SIZE + li r0, 0 + stw r0, 0(r1) + /* * We are now in a environment that is totally independent from * bootloader setup. |