Push old Amlogic BL2 sourcesHEADmaster

1 files changed, 127 insertions, 0 deletions

diff --git a/lib/aarch64/xlat_helpers.c b/lib/aarch64/xlat_helpers.c
new file mode 100644
index 0000000..d401ffc
--- /dev/null
+++ b/lib/aarch64/xlat_helpers.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch.h>
+#include <assert.h>
+
+/*******************************************************************************
+ * Helper to create a level 1/2 table descriptor which points to a level 2/3
+ * table.
+ ******************************************************************************/
+unsigned long create_table_desc(unsigned long *next_table_ptr)
+{
+	unsigned long desc = (unsigned long) next_table_ptr;
+
+	/* Clear the last 12 bits */
+	desc >>= FOUR_KB_SHIFT;
+	desc <<= FOUR_KB_SHIFT;
+
+	desc |= TABLE_DESC;
+
+	return desc;
+}
+
+/*******************************************************************************
+ * Helper to create a level 1/2/3 block descriptor which maps the va to addr
+ ******************************************************************************/
+unsigned long create_block_desc(unsigned long desc,
+				unsigned long addr,
+				unsigned int level)
+{
+	switch (level) {
+	case LEVEL1:
+		desc |= (addr << FIRST_LEVEL_DESC_N) | BLOCK_DESC;
+		break;
+	case LEVEL2:
+		desc |= (addr << SECOND_LEVEL_DESC_N) | BLOCK_DESC;
+		break;
+	case LEVEL3:
+		desc |= (addr << THIRD_LEVEL_DESC_N) | TABLE_DESC;
+		break;
+	default:
+		assert(0);
+	}
+
+	return desc;
+}
+
+/*******************************************************************************
+ * Helper to create a level 1/2/3 block descriptor which maps the va to output_
+ * addr with Device nGnRE attributes.
+ ******************************************************************************/
+unsigned long create_device_block(unsigned long output_addr,
+				  unsigned int level,
+				  unsigned int ns)
+{
+	unsigned long upper_attrs, lower_attrs, desc;
+
+	lower_attrs = LOWER_ATTRS(ACCESS_FLAG | OSH | AP_RW);
+	lower_attrs |= LOWER_ATTRS(ns | ATTR_DEVICE_INDEX);
+	upper_attrs = UPPER_ATTRS(XN);
+	desc = upper_attrs | lower_attrs;
+
+	return create_block_desc(desc, output_addr, level);
+}
+
+/*******************************************************************************
+ * Helper to create a level 1/2/3 block descriptor which maps the va to output_
+ * addr with inner-shareable normal wbwa read-only memory attributes.
+ ******************************************************************************/
+unsigned long create_romem_block(unsigned long output_addr,
+				 unsigned int level,
+				 unsigned int ns)
+{
+	unsigned long upper_attrs, lower_attrs, desc;
+
+	lower_attrs = LOWER_ATTRS(ACCESS_FLAG | ISH | AP_RO);
+	lower_attrs |= LOWER_ATTRS(ns | ATTR_IWBWA_OWBWA_NTR_INDEX);
+	upper_attrs = UPPER_ATTRS(0ull);
+	desc = upper_attrs | lower_attrs;
+
+	return create_block_desc(desc, output_addr, level);
+}
+
+/*******************************************************************************
+ * Helper to create a level 1/2/3 block descriptor which maps the va to output_
+ * addr with inner-shareable normal wbwa read-write memory attributes.
+ ******************************************************************************/
+unsigned long create_rwmem_block(unsigned long output_addr,
+				 unsigned int level,
+				 unsigned int ns)
+{
+	unsigned long upper_attrs, lower_attrs, desc;
+
+	lower_attrs = LOWER_ATTRS(ACCESS_FLAG | ISH | AP_RW);
+	lower_attrs |= LOWER_ATTRS(ns | ATTR_IWBWA_OWBWA_NTR_INDEX);
+	upper_attrs = UPPER_ATTRS(XN);
+	desc = upper_attrs | lower_attrs;
+
+	return create_block_desc(desc, output_addr, level);
+}