diff options
Diffstat (limited to 'bsps/powerpc/qemuppc/start/start.S')
| -rw-r--r-- | bsps/powerpc/qemuppc/start/start.S | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/bsps/powerpc/qemuppc/start/start.S b/bsps/powerpc/qemuppc/start/start.S new file mode 100644 index 0000000000..1ef7a3a02a --- /dev/null +++ b/bsps/powerpc/qemuppc/start/start.S @@ -0,0 +1,52 @@ +#include <rtems/score/cpu.h> +#include <rtems/powerpc/powerpc.h> + +#include <bspopts.h> + + .global bsp_interrupt_stack_start + .global bsp_interrupt_stack_end + .global _start + + .section .bsp_start_text,"awx",@progbits + +_start: + lis %r1,bsp_interrupt_stack_start@h + ori %r1,%r1,bsp_interrupt_stack_start@l + /* Make sure stack is properly aligned */ + li %r3, CPU_STACK_ALIGNMENT - 1 + andc %r1, %r1, %r3 + /* NULL ptr to back chain */ + li %r3, 0 + stw %r3, 0(%r1) + + li %r3,8192 + mtmsr %r3 + + /* Read-only small data */ + lis %r2, _SDA2_BASE_@h + ori %r2, %r2,_SDA2_BASE_@l + + /* Read-write small data */ + lis %r13, _SDA_BASE_@h + ori %r13, %r13,_SDA_BASE_@l + + bl cmain + .size _start, . - _start + + .global __eabi +__eabi: + blr + .size __eabi, . - __eabi + + .section ".reset","ax" +_reset: + b _start + .size _reset, . - _reset + + /* Start stack area */ + .section ".bsp_rwextra", "aw", @nobits + .align 4 + .space 4096 +bsp_interrupt_stack_start: + .space 32768 +bsp_interrupt_stack_end: |