entry-macro.S
上传用户:szlgq88
上传日期:2009-04-28
资源大小:48287k
文件大小:1k
- /*
- * include/asm-arm/arch-pxa/entry-macro.S
- *
- * Low-level IRQ helper macros for PXA-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
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- #ifdef CONFIG_PXA27x
- mrc p6, 0, irqstat, c0, c0, 0 @ ICIP
- mrc p6, 0, irqnr, c1, c0, 0 @ ICMR
- #else
- mov base, #io_p2v(0x40000000) @ IIR Ctl = 0x40d00000
- add base, base, #0x00d00000
- ldr irqstat, [base, #0] @ ICIP
- ldr irqnr, [base, #4] @ ICMR
- #endif
- ands irqnr, irqstat, irqnr
- beq 1001f
- rsb irqstat, irqnr, #0
- and irqstat, irqstat, irqnr
- clz irqnr, irqstat
- rsb irqnr, irqnr, #(31 - PXA_IRQ_SKIP)
- 1001:
- .endm