diff options
Diffstat (limited to 'arch/x86/cpu/start.S')
| -rw-r--r-- | arch/x86/cpu/start.S | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S index 1b738f9..b0d0ac0 100644 --- a/arch/x86/cpu/start.S +++ b/arch/x86/cpu/start.S @@ -78,20 +78,22 @@ car_init_ret: * We now have CONFIG_SYS_CAR_SIZE bytes of Cache-As-RAM (or SRAM, * or fully initialised SDRAM - we really don't care which) * starting at CONFIG_SYS_CAR_ADDR to be used as a temporary stack - * and early malloc area. + * and early malloc area. The MRC requires some space at the top. * * Stack grows down from top of CAR. We have: * * top-> CONFIG_SYS_CAR_ADDR + CONFIG_SYS_CAR_SIZE + * MRC area * global_data * x86 global descriptor table * early malloc area * stack * bottom-> CONFIG_SYS_CAR_ADDR */ - - /* Stack grows down from top of CAR */ - movl $(CONFIG_SYS_CAR_ADDR + CONFIG_SYS_CAR_SIZE), %esp + movl $(CONFIG_SYS_CAR_ADDR + CONFIG_SYS_CAR_SIZE - 4), %esp +#ifdef CONFIG_DCACHE_RAM_MRC_VAR_SIZE + subl $CONFIG_DCACHE_RAM_MRC_VAR_SIZE, %esp +#endif /* Reserve space on stack for global data */ subl $GENERATED_GBL_DATA_SIZE, %esp |