From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- arch/arm/mach-nomadik/include/mach/entry-macro.S | 43 ++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 arch/arm/mach-nomadik/include/mach/entry-macro.S (limited to 'arch/arm/mach-nomadik/include/mach/entry-macro.S') diff --git a/arch/arm/mach-nomadik/include/mach/entry-macro.S b/arch/arm/mach-nomadik/include/mach/entry-macro.S new file mode 100644 index 00000000..49f1aa3b --- /dev/null +++ b/arch/arm/mach-nomadik/include/mach/entry-macro.S @@ -0,0 +1,43 @@ +/* + * Low-level IRQ helper macros for Nomadik 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 +#include + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + ldr \base, =IO_ADDRESS(NOMADIK_IC_BASE) + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + + /* This stanza gets the irq mask from one of two status registers */ + mov \irqnr, #0 + ldr \irqstat, [\base, #VIC_REG_IRQSR0] @ get masked status + cmp \irqstat, #0 + bne 1001f + add \irqnr, \irqnr, #32 + ldr \irqstat, [\base, #VIC_REG_IRQSR1] @ get masked status + +1001: tst \irqstat, #15 + bne 1002f + add \irqnr, \irqnr, #4 + movs \irqstat, \irqstat, lsr #4 + bne 1001b +1002: tst \irqstat, #1 + bne 1003f + add \irqnr, \irqnr, #1 + movs \irqstat, \irqstat, lsr #1 + bne 1002b +1003: /* EQ will be set if no irqs pending */ + .endm -- cgit v1.2.3