84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
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/*
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* Copyright (C) 2011-2012 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#include <debug.h>
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#include <drivers/amc/amc.h>
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#include <drivers/amc/amc_phy.h>
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#include <drivers/amc/amc_regs.h>
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#include <drivers/dram.h>
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#include <drivers/miu.h>
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#include <platform/int.h>
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#include <sys.h>
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#include <platform/soc/hwclocks.h>
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#include <platform/soc/chipid.h>
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#include <platform/error_handler.h>
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#include <platform/soc/hwisr.h>
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#include <platform/soc/miu.h>
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// Enables all errors (the remaining bits are perf counters)
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#define AMC_IRERRDBG_INTEN_ALLERRORS ((1<<20) |\
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(1<<19)|(1<<17)|(1<<16)|(1<<15)| \
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(1<<14)|(1<<13))
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// INTSTATUS and IERRDBG bit positions are different.
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#define AMC_INTSTATUS_ALLERRORS \
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((1<<25)|(1<<24)|(1<<22)|(1<<21)|(1<<20)|(1<<19)|(1<<18))
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#define CP_COM_NORM_MSK_CLR_ALL (0xFFFFFFFF)
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#define CP_COM_NORM_MSK_ILLEGAL_COH_INTS ((1<<0) | (1<<14))
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static void amc_int_handler(void* arg);
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static void cp_int_handler(void *arg);
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static void enable_cp_checks()
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{
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install_int_handler(INT_COHERENCE_PNT_ERR, cp_int_handler, NULL);
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if (chipid_get_chip_revision() < 0x10) {
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// Alcatraz A0 errata <rdar://problem/11535513> causes spurious illegal coherent access errors
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rCP_COM_INT_NORM_MASK_CLR = (CP_COM_NORM_MSK_CLR_ALL & ~CP_COM_NORM_MSK_ILLEGAL_COH_INTS);
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rCP_COM_INT_NORM_MASK_SET = CP_COM_NORM_MSK_ILLEGAL_COH_INTS;
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}
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else
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{
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rCP_COM_INT_NORM_MASK_CLR = CP_COM_NORM_MSK_CLR_ALL;
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}
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unmask_int(INT_COHERENCE_PNT_ERR);
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}
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static void enable_amc_checks()
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{
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install_int_handler(INT_MEM_CONTROLLER, amc_int_handler, NULL);
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rAMC_INTEN = AMC_IRERRDBG_INTEN_ALLERRORS;
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if(rAMC_INTSTATUS & AMC_INTSTATUS_ALLERRORS) {
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// AMC Interrupts, unlike the CP ones, don't seem to stick. If an error already exists
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// this early in bootup, we won't get an interrupt upon unmask.
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amc_int_handler(NULL);
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}
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rAMC_INTSTATUS = AMC_INTSTATUS_ALLERRORS;
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unmask_int(INT_MEM_CONTROLLER);
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}
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void platform_enable_error_handler() {
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enable_amc_checks();
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enable_cp_checks();
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}
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static void amc_int_handler(void *arg)
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{
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(void)arg;
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panic("Received unexpected AMC error. AMC_IERRDBG_INTSTATUS = 0x%x\n", rAMC_INTSTATUS);
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}
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static void cp_int_handler(void *arg) {
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(void)arg;
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panic("Received unexpected Coherency Point error. CP_COM_INT_NORM_REQUEST = 0x%x\n", rCP_COM_INT_NORM_REQUEST);
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}
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