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-iop33x/include/mach/entry-macro.S | 37 +++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 arch/arm/mach-iop33x/include/mach/entry-macro.S (limited to 'arch/arm/mach-iop33x/include/mach/entry-macro.S') diff --git a/arch/arm/mach-iop33x/include/mach/entry-macro.S b/arch/arm/mach-iop33x/include/mach/entry-macro.S new file mode 100644 index 00000000..4e1f7282 --- /dev/null +++ b/arch/arm/mach-iop33x/include/mach/entry-macro.S @@ -0,0 +1,37 @@ +/* + * arch/arm/mach-iop33x/include/mach/entry-macro.S + * + * Low-level IRQ helper macros for IOP33x-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 + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + mrc p15, 0, \tmp, c15, c1, 0 + orr \tmp, \tmp, #(1 << 6) + mcr p15, 0, \tmp, c15, c1, 0 @ Enable cp6 access + mrc p15, 0, \tmp, c15, c1, 0 + mov \tmp, \tmp + sub pc, pc, #4 @ cp_wait + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + mrc p6, 0, \irqstat, c14, c0, 0 @ Read IINTVEC + cmp \irqstat, #0 + mrceq p6, 0, \irqstat, c14, c0, 0 @ erratum 63 workaround + adds \irqnr, \irqstat, #1 + movne \irqnr, \irqstat, lsr #2 + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + mrc p15, 0, \tmp1, c15, c1, 0 + ands \tmp2, \tmp1, #(1 << 6) + bicne \tmp1, \tmp1, #(1 << 6) + mcrne p15, 0, \tmp1, c15, c1, 0 @ Disable cp6 access + .endm -- cgit v1.2.3