first and last commit

platform/s5l8747x/miu/miu.c

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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.
+ */
+#include <arch.h>
+#include <drivers/miu.h>
+#include <platform.h>
+#include <platform/miu.h>
+#include <platform/clocks.h>
+#include <platform/memmap.h>
+#include <platform/power.h>
+#include <platform/soc/hwclocks.h>
+#include <platform/soc/miu.h>
+#include <platform/soc/power.h>
+#include <sys.h>
+
+/* memory controller stuff */
+
+#if APPLICATION_IBOOT
+
+int miu_initialize_dram(bool resume)
+{
+#if APPLICATION_IBOOT
+	/* Turn off alias from 0x10000000 to 0x08000000 */
+	rDDR1 = 1;
+
+	/* bring up sdram */
+	mcu_initialize_dram(resume);
+#endif	
+	return 0;
+}
+
+#endif /* APPLICATION_IBOOT */
+
+int miu_initialize_internal_ram(void)
+{
+#if APPLICATION_SECUREROM
+	// Ensure that rSTATESAVE0 and rSTATESAVE1 get cleared
+	rSTATESAVE0 = 0;
+	rSTATESAVE1 = 0;
+#endif /* APPLICATION_SECUREROM */
+
+	// Save the Security Epoch in the top byte of SAVESTATE0
+	rSTATESAVE0 &= ~0xFF000000;
+	rSTATESAVE0 |= (platform_get_security_epoch()) << 24;
+
+	return 0;
+}
+
+void 
+miu_select_remap(enum remap_select sel)
+{
+	switch (sel) {
+		case REMAP_SRAM:
+			rREMAP = (rREMAP & ~3) | (1 << 0) | (1 << 1); // remap, remap_sel = 1
+			break;
+		case REMAP_SDRAM:
+			rREMAP = (rREMAP & ~3) | (1 << 0) | (0 << 1); // remap, remap_sel = 0
+			break;
+	}
+}
+
+void
+miu_setup_mfc_address_filter(void)
+{
+#if ((PURPLE_GFX_MEMORY_LEN + PANIC_SIZE) & 0xFFFFF) != 0
+#error "PurpleGfxMemory must be 1 MB-aligned"
+#endif
+	uint32_t range_end = SDRAM_BASE + (uint32_t)platform_get_memory_size();
+	uint32_t range_base = range_end - PANIC_SIZE - PURPLE_GFX_MEMORY_LEN;
+	rMFC_ARF_BASE_ADDR = range_base;
+	rMFC_ARF_ADDR_MASK = ~(range_end - range_base) & 0xFFF00000;
+	rMFC_ARF_CON = 1;
+}
+
+int miu_init(void)
+{
+#if APPLICATION_IBOOT && !PRODUCT_IBEC
+	// Verify that the Security Epoch in STATESAVE0 matches
+	if ((rSTATESAVE0 >> 24) != platform_get_security_epoch()) {
+		panic("miu_init: Epoch Mismatch\n");
+	}
+#endif
+
+	/* remap whatever bank of ram we're in to zero */
+	if (TEXT_BASE == SRAM_BASE)
+		miu_select_remap(REMAP_SRAM);
+	else if ((TEXT_BASE >= SDRAM_BASE) && (TEXT_BASE < SDRAM_END))
+		miu_select_remap(REMAP_SDRAM);
+
+#if APPLICATION_IBOOT
+	miu_setup_mfc_address_filter();
+#endif
+
+	return 0;
+}

platform/s5l8747x/miu/rules.mk

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+# Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
+#
+# This document is the property of Apple Computer, 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 Computer, Inc.
+#
+LOCAL_DIR := $(GET_LOCAL_DIR)
+
+OPTIONS += \
+	WITH_HW_MIU=1
+
+ALL_OBJS += $(LOCAL_DIR)/miu.o