diff options
Diffstat (limited to 'include/asm-arm/arch-imx/entry-macro.S')
| -rw-r--r-- | include/asm-arm/arch-imx/entry-macro.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/asm-arm/arch-imx/entry-macro.S b/include/asm-arm/arch-imx/entry-macro.S new file mode 100644 index 00000000000..b40ea7cf88e --- /dev/null +++ b/include/asm-arm/arch-imx/entry-macro.S @@ -0,0 +1,29 @@ +/* + * include/asm-arm/arch-imx/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. + */ + .macro disable_fiq + .endm +#define AITC_NIVECSR 0x40 + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \irqstat, =IO_ADDRESS(IMX_AITC_BASE) + @ Load offset & priority of the highest priority + @ interrupt pending. + ldr \irqnr, [\irqstat, #AITC_NIVECSR] + @ Shift off the priority leaving the offset or + @ "interrupt number" + mov \irqnr, \irqnr, lsr #16 + ldr \irqstat, =1 @ dummy compare + ldr \base, =0xFFFF // invalid interrupt + cmp \irqnr, \base + bne 1001f + ldr \irqstat, =0 +1001: + tst \irqstat, #1 @ to make the condition code = TRUE + .endm + |