first and last commit

platform/s5l8960x/error_handler/error_handler.c

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

platform/s5l8960x/error_handler/rules.mk

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+# Copyright (C) 2011 Apple Inc. All rights reserved.
+#
+# This document is the property of Apple Inc.
+# It is considered confidential and proprietary.
+#
+# This document may not be reproduced or transmitted in any form,
+# in whole or in part, without the express written permission of
+# Apple Inc.
+#
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+OPTIONS += \
+	WITH_PLATFORM_ERROR_HANDLER=1
+
+ALL_OBJS += \
+	$(LOCAL_DIR)/error_handler.o