84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/*
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* Copyright (C) 2011-2013 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 <platform/int.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 AMCC_IRERRDBG_INTEN_ALLERRORS ((1 << 20) | (1 << 21) | (1 << 22) | \
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(1 << 23) | (1 << 24) | (1 << 25))
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#define AMCC_INTSTATUS_ALLERRORS AMCC_IRERRDBG_INTEN_ALLERRORS
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#define AMCC_IERRDBG_INTSTS_DRAM_ONE_BIT_ERR (1 << 21)
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#define AMCC_IERRDBG_INTSTS_DRAM_MULTI_BIT_ERR (1 << 22)
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#define AMCC_IRERRDBG_MCCAFERRLOG2_AGENT_MASK (0xFF)
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#define AMCC_IRERRDBG_MCCAFERRLOG2_AGENT_IODAP (0x86)
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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 __unused)
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{
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uint32_t intsts = rAMC_INTSTATUS;
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if ((intsts & (AMCC_IERRDBG_INTSTS_DRAM_ONE_BIT_ERR | AMCC_IERRDBG_INTSTS_DRAM_ONE_BIT_ERR)) == 0) {
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// Whitelist errors caused by the IODAP agent (Astris) since
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// these are most likely caused by user input errors.
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uint32_t agent_id = rAMC_MCCAFERRLOG2 & AMCC_IRERRDBG_MCCAFERRLOG2_AGENT_MASK;
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if (agent_id == AMCC_IRERRDBG_MCCAFERRLOG2_AGENT_IODAP) {
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dprintf(DEBUG_INFO, "AMC error from IODAP (ignored): 0x%x\n", rAMC_INTSTATUS);
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// Clear the interrupt and continue on.
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rAMC_INTSTATUS = intsts;
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return;
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}
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}
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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 __unused) {
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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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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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rCP_COM_INT_NORM_MASK_CLR = CP_COM_NORM_MSK_CLR_ALL;
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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 = AMCC_IRERRDBG_INTEN_ALLERRORS;
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if (rAMC_INTSTATUS & AMCC_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 = AMCC_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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