28ad94ec61
This patch adds the basic infrastructure for the Nomadik 8815 CPU and the "Nomadik Hardware Kit" NHK8815. This patch only includes the serial console and core stuff, no drivers. Signed-off-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Andrea Gallo <andrea.gallo@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
44 lines
1.0 KiB
ArmAsm
44 lines
1.0 KiB
ArmAsm
/*
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* Low-level IRQ helper macros for Nomadik platforms
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <mach/hardware.h>
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#include <mach/irqs.h>
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.macro disable_fiq
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.endm
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.macro get_irqnr_preamble, base, tmp
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ldr \base, =IO_ADDRESS(NOMADIK_IC_BASE)
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.endm
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.macro arch_ret_to_user, tmp1, tmp2
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.endm
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.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
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/* This stanza gets the irq mask from one of two status registers */
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mov \irqnr, #0
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ldr \irqstat, [\base, #VIC_REG_IRQSR0] @ get masked status
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cmp \irqstat, #0
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bne 1001f
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add \irqnr, \irqnr, #32
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ldr \irqstat, [\base, #VIC_REG_IRQSR1] @ get masked status
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1001: tst \irqstat, #15
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bne 1002f
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add \irqnr, \irqnr, #4
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movs \irqstat, \irqstat, lsr #4
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bne 1001b
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1002: tst \irqstat, #1
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bne 1003f
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add \irqnr, \irqnr, #1
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movs \irqstat, \irqstat, lsr #1
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bne 1002b
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1003: /* EQ will be set if no irqs pending */
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.endm
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