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https://github.com/Telecominfraproject/OpenCellular.git
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a625b710c3
Add intial minute-IA (x86) core to to enable the FW to boot on Intel Integrated Sensor Hub (ISH). BUG=chrome-os-partner:51851 BRANCH=None TEST=`make buildall -j` Change-Id: I4dcf841766f216cd00fb1d4214fae19ba5de5603 Signed-off-by: Jaiber John <jaiber.j.john@intel.com> Signed-off-by: Alex Brill <alexander.brill@intel.com> Reviewed-on: https://chromium-review.googlesource.com/336443 Commit-Ready: Raj Mojumder <raj.mojumder@intel.com> Tested-by: Raj Mojumder <raj.mojumder@intel.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/* Copyright (c) 2016 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Helper to declare IRQ handling routines */
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#ifndef __CROS_EC_IRQ_HANDLER_H
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#define __CROS_EC_IRQ_HANDLER_H
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#include "registers.h"
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struct irq_data {
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void (*routine)(void);
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int irq;
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};
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/* Helper macros to build the IRQ handler and priority struct names */
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#define IRQ_HANDLER(irqname) CONCAT3(_irq_, irqname, _handler)
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#define IRQ_PRIORITY(irqname) CONCAT2(prio_, irqname)
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/*
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* Macro to connect the interrupt handler "routine" to the irq number "irq" and
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* ensure it is enabled in the interrupt controller with the right priority.
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*
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* Note: No 'naked' function support for x86, so function is implemented within
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* __asm__
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*/
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#define DECLARE_IRQ(irq, routine) DECLARE_IRQ_(irq, routine, irq + 32 + 10)
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/* Each irq has a irq_data structure placed in .rodata.irqs section,
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* to be used for dynamically setting up interrupt gates */
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#define DECLARE_IRQ_(irq, routine, vector) \
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void __keep routine(void); \
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void IRQ_HANDLER(irq)(void); \
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__asm__ (".section .rodata.irqs\n"); \
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const struct irq_data __keep CONCAT4(__irq_, irq, _, routine) \
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__attribute__((section(".rodata.irqs")))= {IRQ_HANDLER(irq), irq};\
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__asm__ ( \
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".section .text._irq_"#irq"_handler\n" \
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"_irq_"#irq"_handler:\n" \
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"pusha\n" \
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"add $1, __in_isr\n" \
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"call "#routine"\n" \
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"push $0\n" \
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"push $0\n" \
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"call switch_handler\n" \
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"addl $0x08, %esp\n" \
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"test %eax, %eax\n" \
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"je 1f\n" \
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"movl current_task, %eax\n" \
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"movl %esp, (%eax)\n" \
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"movl next_task, %eax\n" \
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"movl %eax, current_task\n" \
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"movl (%eax), %esp\n" \
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"1:\n" \
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"movl $"#vector ", (0xFEC00040)\n" \
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"sub $1, __in_isr\n" \
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"movl $0x00, (0xFEE000B0)\n" \
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"popa\n" \
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"iret\n" \
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);
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#endif /* __CROS_EC_IRQ_HANDLER_H */
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