diff options
Diffstat (limited to 'arch/arm/mach-imx/include/mach/entry-macro.S')
| -rw-r--r-- | arch/arm/mach-imx/include/mach/entry-macro.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/include/mach/entry-macro.S b/arch/arm/mach-imx/include/mach/entry-macro.S new file mode 100644 index 000000000000..e4db679f7766 --- /dev/null +++ b/arch/arm/mach-imx/include/mach/entry-macro.S @@ -0,0 +1,32 @@ +/* + * arch/arm/mach-imx/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for iMX-based platforms + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ +#include <mach/hardware.h> + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + +#define AITC_NIVECSR 0x40 + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \base, =IO_ADDRESS(IMX_AITC_BASE) + @ Load offset & priority of the highest priority + @ interrupt pending. + ldr \irqstat, [\base, #AITC_NIVECSR] + @ Shift off the priority leaving the offset or + @ "interrupt number", use arithmetic shift to + @ transform illegal source (0xffff) as -1 + mov \irqnr, \irqstat, asr #16 + adds \tmp, \irqnr, #1 + .endm |