Refactor the xlat_tables library code
The AArch32 long descriptor format and the AArch64 descriptor format
correspond to each other which allows possible sharing of xlat_tables
library code between AArch64 and AArch32. This patch refactors the
xlat_tables library code to seperate the common functionality from
architecture specific code. Prior to this patch, all of the xlat_tables
library code were in `lib/aarch64/xlat_tables.c` file. The refactored code
is now in `lib/xlat_tables/` directory. The AArch64 specific programming
for xlat_tables is in `lib/xlat_tables/aarch64/xlat_tables.c` and the rest
of the code common to AArch64 and AArch32 is in
`lib/xlat_tables/xlat_tables_common.c`. Also the data types used in
xlat_tables library APIs are reworked to make it compatible between AArch64
and AArch32.
The `lib/aarch64/xlat_tables.c` file now includes the new xlat_tables
library files to retain compatibility for existing platform ports.
The macros related to xlat_tables library are also moved from
`include/lib/aarch64/arch.h` to the header `include/lib/xlat_tables.h`.
NOTE: THE `lib/aarch64/xlat_tables.c` FILE IS DEPRECATED AND PLATFORM PORTS
ARE EXPECTED TO INCLUDE THE NEW XLAT_TABLES LIBRARY FILES IN THEIR MAKEFILES.
Change-Id: I3d17217d24aaf3a05a4685d642a31d4d56255a0f
diff --git a/common/bl_common.c b/common/bl_common.c
index d5b095a..2e23fbf 100644
--- a/common/bl_common.c
+++ b/common/bl_common.c
@@ -38,6 +38,7 @@
#include <io_storage.h>
#include <platform.h>
#include <string.h>
+#include <xlat_tables.h>
unsigned long page_align(unsigned long value, unsigned dir)
{
diff --git a/include/lib/aarch64/arch.h b/include/lib/aarch64/arch.h
index f9b8ed6..07bbd89 100644
--- a/include/lib/aarch64/arch.h
+++ b/include/lib/aarch64/arch.h
@@ -359,80 +359,6 @@
#define clr_cntp_ctl_enable(x) (x &= ~(1 << CNTP_CTL_ENABLE_SHIFT))
#define clr_cntp_ctl_imask(x) (x &= ~(1 << CNTP_CTL_IMASK_SHIFT))
-/* Miscellaneous MMU related constants */
-#define NUM_2MB_IN_GB (1 << 9)
-#define NUM_4K_IN_2MB (1 << 9)
-#define NUM_GB_IN_4GB (1 << 2)
-
-#define TWO_MB_SHIFT 21
-#define ONE_GB_SHIFT 30
-#define FOUR_KB_SHIFT 12
-
-#define ONE_GB_INDEX(x) ((x) >> ONE_GB_SHIFT)
-#define TWO_MB_INDEX(x) ((x) >> TWO_MB_SHIFT)
-#define FOUR_KB_INDEX(x) ((x) >> FOUR_KB_SHIFT)
-
-#define INVALID_DESC 0x0
-#define BLOCK_DESC 0x1
-#define TABLE_DESC 0x3
-
-#define FIRST_LEVEL_DESC_N ONE_GB_SHIFT
-#define SECOND_LEVEL_DESC_N TWO_MB_SHIFT
-#define THIRD_LEVEL_DESC_N FOUR_KB_SHIFT
-
-#define LEVEL1 1
-#define LEVEL2 2
-#define LEVEL3 3
-
-#define XN (1ull << 2)
-#define PXN (1ull << 1)
-#define CONT_HINT (1ull << 0)
-
-#define UPPER_ATTRS(x) (x & 0x7) << 52
-#define NON_GLOBAL (1 << 9)
-#define ACCESS_FLAG (1 << 8)
-#define NSH (0x0 << 6)
-#define OSH (0x2 << 6)
-#define ISH (0x3 << 6)
-
-#define PAGE_SIZE_SHIFT FOUR_KB_SHIFT
-#define PAGE_SIZE (1 << PAGE_SIZE_SHIFT)
-#define PAGE_SIZE_MASK (PAGE_SIZE - 1)
-#define IS_PAGE_ALIGNED(addr) (((addr) & PAGE_SIZE_MASK) == 0)
-
-#define XLAT_ENTRY_SIZE_SHIFT 3 /* Each MMU table entry is 8 bytes (1 << 3) */
-#define XLAT_ENTRY_SIZE (1 << XLAT_ENTRY_SIZE_SHIFT)
-
-#define XLAT_TABLE_SIZE_SHIFT PAGE_SIZE_SHIFT
-#define XLAT_TABLE_SIZE (1 << XLAT_TABLE_SIZE_SHIFT)
-
-/* Values for number of entries in each MMU translation table */
-#define XLAT_TABLE_ENTRIES_SHIFT (XLAT_TABLE_SIZE_SHIFT - XLAT_ENTRY_SIZE_SHIFT)
-#define XLAT_TABLE_ENTRIES (1 << XLAT_TABLE_ENTRIES_SHIFT)
-#define XLAT_TABLE_ENTRIES_MASK (XLAT_TABLE_ENTRIES - 1)
-
-/* Values to convert a memory address to an index into a translation table */
-#define L3_XLAT_ADDRESS_SHIFT PAGE_SIZE_SHIFT
-#define L2_XLAT_ADDRESS_SHIFT (L3_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
-#define L1_XLAT_ADDRESS_SHIFT (L2_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
-
-/*
- * AP[1] bit is ignored by hardware and is
- * treated as if it is One in EL2/EL3
- */
-#define AP_RO (0x1 << 5)
-#define AP_RW (0x0 << 5)
-
-#define NS (0x1 << 3)
-#define ATTR_NON_CACHEABLE_INDEX 0x2
-#define ATTR_DEVICE_INDEX 0x1
-#define ATTR_IWBWA_OWBWA_NTR_INDEX 0x0
-#define LOWER_ATTRS(x) (((x) & 0xfff) << 2)
-#define ATTR_NON_CACHEABLE (0x44)
-#define ATTR_DEVICE (0x4)
-#define ATTR_IWBWA_OWBWA_NTR (0xff)
-#define MAIR_ATTR_SET(attr, index) (attr << (index << 3))
-
/* Exception Syndrome register bits and bobs */
#define ESR_EC_SHIFT 26
#define ESR_EC_MASK 0x3f
diff --git a/include/lib/aarch64/xlat_tables.h b/include/lib/aarch64/xlat_tables.h
deleted file mode 100644
index d21100e..0000000
--- a/include/lib/aarch64/xlat_tables.h
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Copyright (c) 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.
- */
-
-#ifndef __XLAT_TABLES_H__
-#define __XLAT_TABLES_H__
-
-
-/*
- * Flags to override default values used to program system registers while
- * enabling the MMU.
- */
-#define DISABLE_DCACHE (1 << 0)
-
-#ifndef __ASSEMBLY__
-#include <stdint.h>
-
-/* Helper macro to define entries for mmap_region_t. It creates
- * identity mappings for each region.
- */
-#define MAP_REGION_FLAT(adr, sz, attr) MAP_REGION(adr, adr, sz, attr)
-
-/* Helper macro to define entries for mmap_region_t. It allows to
- * re-map address mappings from 'pa' to 'va' for each region.
- */
-#define MAP_REGION(pa, va, sz, attr) {(pa), (va), (sz), (attr)}
-
-/*
- * Shifts and masks to access fields of an mmap_attr_t
- */
-#define MT_TYPE_MASK 0x7
-#define MT_TYPE(_attr) ((_attr) & MT_TYPE_MASK)
-/* Access permissions (RO/RW) */
-#define MT_PERM_SHIFT 3
-/* Security state (SECURE/NS) */
-#define MT_SEC_SHIFT 4
-
-/*
- * Memory mapping attributes
- */
-typedef enum {
- /*
- * Memory types supported.
- * These are organised so that, going down the list, the memory types
- * are getting weaker; conversely going up the list the memory types are
- * getting stronger.
- */
- MT_DEVICE,
- MT_NON_CACHEABLE,
- MT_MEMORY,
- /* Values up to 7 are reserved to add new memory types in the future */
-
- /*
- * The following values are organised so that a clear bit gives a more
- * restrictive mapping than a set bit, that way a bitwise-and of two
- * sets of attributes will never give an attribute which has greater
- * access rights than any of the original attributes.
- */
- MT_RO = 0 << MT_PERM_SHIFT,
- MT_RW = 1 << MT_PERM_SHIFT,
-
- MT_SECURE = 0 << MT_SEC_SHIFT,
- MT_NS = 1 << MT_SEC_SHIFT,
-} mmap_attr_t;
-
-/*
- * Structure for specifying a single region of memory.
- */
-typedef struct mmap_region {
- unsigned long base_pa;
- unsigned long base_va;
- unsigned long size;
- mmap_attr_t attr;
-} mmap_region_t;
-
-void mmap_add_region(unsigned long base_pa, unsigned long base_va,
- unsigned long size, unsigned attr);
-void mmap_add(const mmap_region_t *mm);
-
-void init_xlat_tables(void);
-
-void enable_mmu_el1(uint32_t flags);
-void enable_mmu_el3(uint32_t flags);
-
-#endif /*__ASSEMBLY__*/
-#endif /* __XLAT_TABLES_H__ */
diff --git a/include/lib/xlat_tables.h b/include/lib/xlat_tables.h
new file mode 100644
index 0000000..abe46ed
--- /dev/null
+++ b/include/lib/xlat_tables.h
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2014-2016, 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.
+ */
+
+#ifndef __XLAT_TABLES_H__
+#define __XLAT_TABLES_H__
+
+/* Miscellaneous MMU related constants */
+#define NUM_2MB_IN_GB (1 << 9)
+#define NUM_4K_IN_2MB (1 << 9)
+#define NUM_GB_IN_4GB (1 << 2)
+
+#define TWO_MB_SHIFT 21
+#define ONE_GB_SHIFT 30
+#define FOUR_KB_SHIFT 12
+
+#define ONE_GB_INDEX(x) ((x) >> ONE_GB_SHIFT)
+#define TWO_MB_INDEX(x) ((x) >> TWO_MB_SHIFT)
+#define FOUR_KB_INDEX(x) ((x) >> FOUR_KB_SHIFT)
+
+#define INVALID_DESC 0x0
+#define BLOCK_DESC 0x1
+#define TABLE_DESC 0x3
+
+#define FIRST_LEVEL_DESC_N ONE_GB_SHIFT
+#define SECOND_LEVEL_DESC_N TWO_MB_SHIFT
+#define THIRD_LEVEL_DESC_N FOUR_KB_SHIFT
+
+#define LEVEL1 1
+#define LEVEL2 2
+#define LEVEL3 3
+
+#define XN (1ull << 2)
+#define PXN (1ull << 1)
+#define CONT_HINT (1ull << 0)
+
+#define UPPER_ATTRS(x) (x & 0x7) << 52
+#define NON_GLOBAL (1 << 9)
+#define ACCESS_FLAG (1 << 8)
+#define NSH (0x0 << 6)
+#define OSH (0x2 << 6)
+#define ISH (0x3 << 6)
+
+#define PAGE_SIZE_SHIFT FOUR_KB_SHIFT
+#define PAGE_SIZE (1 << PAGE_SIZE_SHIFT)
+#define PAGE_SIZE_MASK (PAGE_SIZE - 1)
+#define IS_PAGE_ALIGNED(addr) (((addr) & PAGE_SIZE_MASK) == 0)
+
+#define XLAT_ENTRY_SIZE_SHIFT 3 /* Each MMU table entry is 8 bytes (1 << 3) */
+#define XLAT_ENTRY_SIZE (1 << XLAT_ENTRY_SIZE_SHIFT)
+
+#define XLAT_TABLE_SIZE_SHIFT PAGE_SIZE_SHIFT
+#define XLAT_TABLE_SIZE (1 << XLAT_TABLE_SIZE_SHIFT)
+
+/* Values for number of entries in each MMU translation table */
+#define XLAT_TABLE_ENTRIES_SHIFT (XLAT_TABLE_SIZE_SHIFT - XLAT_ENTRY_SIZE_SHIFT)
+#define XLAT_TABLE_ENTRIES (1 << XLAT_TABLE_ENTRIES_SHIFT)
+#define XLAT_TABLE_ENTRIES_MASK (XLAT_TABLE_ENTRIES - 1)
+
+/* Values to convert a memory address to an index into a translation table */
+#define L3_XLAT_ADDRESS_SHIFT PAGE_SIZE_SHIFT
+#define L2_XLAT_ADDRESS_SHIFT (L3_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
+#define L1_XLAT_ADDRESS_SHIFT (L2_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
+
+/*
+ * AP[1] bit is ignored by hardware and is
+ * treated as if it is One in EL2/EL3
+ */
+#define AP_RO (0x1 << 5)
+#define AP_RW (0x0 << 5)
+
+#define NS (0x1 << 3)
+#define ATTR_NON_CACHEABLE_INDEX 0x2
+#define ATTR_DEVICE_INDEX 0x1
+#define ATTR_IWBWA_OWBWA_NTR_INDEX 0x0
+#define LOWER_ATTRS(x) (((x) & 0xfff) << 2)
+#define ATTR_NON_CACHEABLE (0x44)
+#define ATTR_DEVICE (0x4)
+#define ATTR_IWBWA_OWBWA_NTR (0xff)
+#define MAIR_ATTR_SET(attr, index) (attr << (index << 3))
+
+/*
+ * Flags to override default values used to program system registers while
+ * enabling the MMU.
+ */
+#define DISABLE_DCACHE (1 << 0)
+
+#ifndef __ASSEMBLY__
+#include <stddef.h>
+#include <stdint.h>
+
+/* Helper macro to define entries for mmap_region_t. It creates
+ * identity mappings for each region.
+ */
+#define MAP_REGION_FLAT(adr, sz, attr) MAP_REGION(adr, adr, sz, attr)
+
+/* Helper macro to define entries for mmap_region_t. It allows to
+ * re-map address mappings from 'pa' to 'va' for each region.
+ */
+#define MAP_REGION(pa, va, sz, attr) {(pa), (va), (sz), (attr)}
+
+/*
+ * Shifts and masks to access fields of an mmap_attr_t
+ */
+#define MT_TYPE_MASK 0x7
+#define MT_TYPE(_attr) ((_attr) & MT_TYPE_MASK)
+/* Access permissions (RO/RW) */
+#define MT_PERM_SHIFT 3
+/* Security state (SECURE/NS) */
+#define MT_SEC_SHIFT 4
+
+/*
+ * Memory mapping attributes
+ */
+typedef enum {
+ /*
+ * Memory types supported.
+ * These are organised so that, going down the list, the memory types
+ * are getting weaker; conversely going up the list the memory types are
+ * getting stronger.
+ */
+ MT_DEVICE,
+ MT_NON_CACHEABLE,
+ MT_MEMORY,
+ /* Values up to 7 are reserved to add new memory types in the future */
+
+ /*
+ * The following values are organised so that a clear bit gives a more
+ * restrictive mapping than a set bit, that way a bitwise-and of two
+ * sets of attributes will never give an attribute which has greater
+ * access rights than any of the original attributes.
+ */
+ MT_RO = 0 << MT_PERM_SHIFT,
+ MT_RW = 1 << MT_PERM_SHIFT,
+
+ MT_SECURE = 0 << MT_SEC_SHIFT,
+ MT_NS = 1 << MT_SEC_SHIFT,
+} mmap_attr_t;
+
+/*
+ * Structure for specifying a single region of memory.
+ */
+typedef struct mmap_region {
+ unsigned long long base_pa;
+ uintptr_t base_va;
+ size_t size;
+ mmap_attr_t attr;
+} mmap_region_t;
+
+/* Generic translation table APIs */
+void init_xlat_tables(void);
+void mmap_add_region(unsigned long long base_pa, uintptr_t base_va,
+ size_t size, unsigned int attr);
+void mmap_add(const mmap_region_t *mm);
+
+/* AArch64 specific translation table APIs */
+void enable_mmu_el1(unsigned int flags);
+void enable_mmu_el3(unsigned int flags);
+
+#endif /*__ASSEMBLY__*/
+#endif /* __XLAT_TABLES_H__ */
diff --git a/lib/aarch64/xlat_tables.c b/lib/aarch64/xlat_tables.c
index 269743f..b140f29 100644
--- a/lib/aarch64/xlat_tables.c
+++ b/lib/aarch64/xlat_tables.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2016, 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:
@@ -28,366 +28,11 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
-#include <arch.h>
-#include <arch_helpers.h>
-#include <assert.h>
-#include <bl_common.h>
-#include <cassert.h>
-#include <debug.h>
-#include <platform_def.h>
-#include <string.h>
-#include <xlat_tables.h>
-
-#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
-#define LVL0_SPACER ""
-#define LVL1_SPACER " "
-#define LVL2_SPACER " "
-#define LVL3_SPACER " "
-#define get_level_spacer(level) \
- (((level) == 0) ? LVL0_SPACER : \
- (((level) == 1) ? LVL1_SPACER : \
- (((level) == 2) ? LVL2_SPACER : LVL3_SPACER)))
-#define debug_print(...) tf_printf(__VA_ARGS__)
-#else
-#define debug_print(...) ((void)0)
-#endif
-
-#define IS_POWER_OF_TWO(x) (((x) & ((x) - 1)) == 0)
-
/*
- * The virtual address space size must be a power of two (as set in TCR.T0SZ).
- * As we start the initial lookup at level 1, it must also be between 2 GB and
- * 512 GB (with the virtual address size therefore 31 to 39 bits). See section
- * D4.2.5 in the ARMv8-A Architecture Reference Manual (DDI 0487A.i) for more
- * information.
+ * This file is deprecated and is retained here only for compatibility.
+ * The xlat_tables library can be found in `lib/xlat_tables` directory.
*/
-CASSERT(ADDR_SPACE_SIZE >= (1ull << 31) && ADDR_SPACE_SIZE <= (1ull << 39) &&
- IS_POWER_OF_TWO(ADDR_SPACE_SIZE), assert_valid_addr_space_size);
-
-#define UNSET_DESC ~0ul
-
-#define NUM_L1_ENTRIES (ADDR_SPACE_SIZE >> L1_XLAT_ADDRESS_SHIFT)
-
-static uint64_t l1_xlation_table[NUM_L1_ENTRIES]
-__aligned(NUM_L1_ENTRIES * sizeof(uint64_t));
-
-static uint64_t xlat_tables[MAX_XLAT_TABLES][XLAT_TABLE_ENTRIES]
-__aligned(XLAT_TABLE_SIZE) __section("xlat_table");
-
-static unsigned next_xlat;
-static unsigned long max_pa;
-static unsigned long max_va;
-static unsigned long tcr_ps_bits;
-
-/*
- * Array of all memory regions stored in order of ascending base address.
- * The list is terminated by the first entry with size == 0.
- */
-static mmap_region_t mmap[MAX_MMAP_REGIONS + 1];
-
-
-static void print_mmap(void)
-{
-#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
- debug_print("mmap:\n");
- mmap_region_t *mm = mmap;
- while (mm->size) {
- debug_print(" VA:0x%lx PA:0x%lx size:0x%lx attr:0x%x\n",
- mm->base_va, mm->base_pa, mm->size, mm->attr);
- ++mm;
- };
- debug_print("\n");
+#if !ERROR_DEPRECATED
+#include "../xlat_tables/xlat_tables_common.c"
+#include "../xlat_tables/aarch64/xlat_tables.c"
#endif
-}
-
-void mmap_add_region(unsigned long base_pa, unsigned long base_va,
- unsigned long size, unsigned attr)
-{
- mmap_region_t *mm = mmap;
- mmap_region_t *mm_last = mm + ARRAY_SIZE(mmap) - 1;
- unsigned long pa_end = base_pa + size - 1;
- unsigned long va_end = base_va + size - 1;
-
- assert(IS_PAGE_ALIGNED(base_pa));
- assert(IS_PAGE_ALIGNED(base_va));
- assert(IS_PAGE_ALIGNED(size));
-
- if (!size)
- return;
-
- /* Find correct place in mmap to insert new region */
- while (mm->base_va < base_va && mm->size)
- ++mm;
-
- /* Make room for new region by moving other regions up by one place */
- memmove(mm + 1, mm, (uintptr_t)mm_last - (uintptr_t)mm);
-
- /* Check we haven't lost the empty sentinal from the end of the array */
- assert(mm_last->size == 0);
-
- mm->base_pa = base_pa;
- mm->base_va = base_va;
- mm->size = size;
- mm->attr = attr;
-
- if (pa_end > max_pa)
- max_pa = pa_end;
- if (va_end > max_va)
- max_va = va_end;
-}
-
-void mmap_add(const mmap_region_t *mm)
-{
- while (mm->size) {
- mmap_add_region(mm->base_pa, mm->base_va, mm->size, mm->attr);
- ++mm;
- }
-}
-
-static unsigned long mmap_desc(unsigned attr, unsigned long addr_pa,
- unsigned level)
-{
- unsigned long desc = addr_pa;
- int mem_type;
-
- desc |= level == 3 ? TABLE_DESC : BLOCK_DESC;
-
- desc |= attr & MT_NS ? LOWER_ATTRS(NS) : 0;
-
- desc |= attr & MT_RW ? LOWER_ATTRS(AP_RW) : LOWER_ATTRS(AP_RO);
-
- desc |= LOWER_ATTRS(ACCESS_FLAG);
-
- mem_type = MT_TYPE(attr);
- if (mem_type == MT_MEMORY) {
- desc |= LOWER_ATTRS(ATTR_IWBWA_OWBWA_NTR_INDEX | ISH);
- if (attr & MT_RW)
- desc |= UPPER_ATTRS(XN);
- } else if (mem_type == MT_NON_CACHEABLE) {
- desc |= LOWER_ATTRS(ATTR_NON_CACHEABLE_INDEX | OSH);
- if (attr & MT_RW)
- desc |= UPPER_ATTRS(XN);
- } else {
- assert(mem_type == MT_DEVICE);
- desc |= LOWER_ATTRS(ATTR_DEVICE_INDEX | OSH);
- desc |= UPPER_ATTRS(XN);
- }
-
- debug_print((mem_type == MT_MEMORY) ? "MEM" :
- ((mem_type == MT_NON_CACHEABLE) ? "NC" : "DEV"));
- debug_print(attr & MT_RW ? "-RW" : "-RO");
- debug_print(attr & MT_NS ? "-NS" : "-S");
-
- return desc;
-}
-
-static int mmap_region_attr(mmap_region_t *mm, unsigned long base_va,
- unsigned long size)
-{
- int attr = mm->attr;
- int old_mem_type, new_mem_type;
-
- for (;;) {
- ++mm;
-
- if (!mm->size)
- return attr; /* Reached end of list */
-
- if (mm->base_va >= base_va + size)
- return attr; /* Next region is after area so end */
-
- if (mm->base_va + mm->size <= base_va)
- continue; /* Next region has already been overtaken */
-
- if ((mm->attr & attr) == attr)
- continue; /* Region doesn't override attribs so skip */
-
- /*
- * Update memory mapping attributes in 2 steps:
- * 1) Update access permissions and security state flags
- * 2) Update memory type.
- *
- * See xlat_tables.h for details about the attributes priority
- * system and the rules dictating whether attributes should be
- * updated.
- */
- old_mem_type = MT_TYPE(attr);
- new_mem_type = MT_TYPE(mm->attr);
- attr &= mm->attr;
- if (new_mem_type < old_mem_type)
- attr = (attr & ~MT_TYPE_MASK) | new_mem_type;
-
- if (mm->base_va > base_va ||
- mm->base_va + mm->size < base_va + size)
- return -1; /* Region doesn't fully cover our area */
- }
-}
-
-static mmap_region_t *init_xlation_table(mmap_region_t *mm,
- unsigned long base_va,
- unsigned long *table, unsigned level)
-{
- unsigned level_size_shift = L1_XLAT_ADDRESS_SHIFT - (level - 1) *
- XLAT_TABLE_ENTRIES_SHIFT;
- unsigned level_size = 1 << level_size_shift;
- unsigned long level_index_mask = XLAT_TABLE_ENTRIES_MASK << level_size_shift;
-
- assert(level <= 3);
-
- debug_print("New xlat table:\n");
-
- do {
- unsigned long desc = UNSET_DESC;
-
- if (!mm->size) {
- /* Done mapping regions; finish zeroing the table */
- desc = INVALID_DESC;
- } else if (mm->base_va + mm->size <= base_va) {
- /* Area now after the region so skip it */
- ++mm;
- continue;
- }
-
- debug_print("%s VA:0x%lx size:0x%x ", get_level_spacer(level),
- base_va, level_size);
-
- if (mm->base_va >= base_va + level_size) {
- /* Next region is after area so nothing to map yet */
- desc = INVALID_DESC;
- } else if (mm->base_va <= base_va && mm->base_va + mm->size >=
- base_va + level_size) {
- /* Next region covers all of area */
- int attr = mmap_region_attr(mm, base_va, level_size);
- if (attr >= 0)
- desc = mmap_desc(attr,
- base_va - mm->base_va + mm->base_pa,
- level);
- }
- /* else Next region only partially covers area, so need */
-
- if (desc == UNSET_DESC) {
- /* Area not covered by a region so need finer table */
- unsigned long *new_table = xlat_tables[next_xlat++];
- assert(next_xlat <= MAX_XLAT_TABLES);
- desc = TABLE_DESC | (unsigned long)new_table;
-
- /* Recurse to fill in new table */
- mm = init_xlation_table(mm, base_va,
- new_table, level+1);
- }
-
- debug_print("\n");
-
- *table++ = desc;
- base_va += level_size;
- } while ((base_va & level_index_mask) && (base_va < ADDR_SPACE_SIZE));
-
- return mm;
-}
-
-static unsigned int calc_physical_addr_size_bits(unsigned long max_addr)
-{
- /* Physical address can't exceed 48 bits */
- assert((max_addr & ADDR_MASK_48_TO_63) == 0);
-
- /* 48 bits address */
- if (max_addr & ADDR_MASK_44_TO_47)
- return TCR_PS_BITS_256TB;
-
- /* 44 bits address */
- if (max_addr & ADDR_MASK_42_TO_43)
- return TCR_PS_BITS_16TB;
-
- /* 42 bits address */
- if (max_addr & ADDR_MASK_40_TO_41)
- return TCR_PS_BITS_4TB;
-
- /* 40 bits address */
- if (max_addr & ADDR_MASK_36_TO_39)
- return TCR_PS_BITS_1TB;
-
- /* 36 bits address */
- if (max_addr & ADDR_MASK_32_TO_35)
- return TCR_PS_BITS_64GB;
-
- return TCR_PS_BITS_4GB;
-}
-
-void init_xlat_tables(void)
-{
- print_mmap();
- init_xlation_table(mmap, 0, l1_xlation_table, 1);
- tcr_ps_bits = calc_physical_addr_size_bits(max_pa);
- assert(max_va < ADDR_SPACE_SIZE);
-}
-
-/*******************************************************************************
- * Macro generating the code for the function enabling the MMU in the given
- * exception level, assuming that the pagetables have already been created.
- *
- * _el: Exception level at which the function will run
- * _tcr_extra: Extra bits to set in the TCR register. This mask will
- * be OR'ed with the default TCR value.
- * _tlbi_fct: Function to invalidate the TLBs at the current
- * exception level
- ******************************************************************************/
-#define DEFINE_ENABLE_MMU_EL(_el, _tcr_extra, _tlbi_fct) \
- void enable_mmu_el##_el(uint32_t flags) \
- { \
- uint64_t mair, tcr, ttbr; \
- uint32_t sctlr; \
- \
- assert(IS_IN_EL(_el)); \
- assert((read_sctlr_el##_el() & SCTLR_M_BIT) == 0); \
- \
- /* Set attributes in the right indices of the MAIR */ \
- mair = MAIR_ATTR_SET(ATTR_DEVICE, ATTR_DEVICE_INDEX); \
- mair |= MAIR_ATTR_SET(ATTR_IWBWA_OWBWA_NTR, \
- ATTR_IWBWA_OWBWA_NTR_INDEX); \
- mair |= MAIR_ATTR_SET(ATTR_NON_CACHEABLE, \
- ATTR_NON_CACHEABLE_INDEX); \
- write_mair_el##_el(mair); \
- \
- /* Invalidate TLBs at the current exception level */ \
- _tlbi_fct(); \
- \
- /* Set TCR bits as well. */ \
- /* Inner & outer WBWA & shareable + T0SZ = 32 */ \
- tcr = TCR_SH_INNER_SHAREABLE | TCR_RGN_OUTER_WBA | \
- TCR_RGN_INNER_WBA | \
- (64 - __builtin_ctzl(ADDR_SPACE_SIZE)); \
- tcr |= _tcr_extra; \
- write_tcr_el##_el(tcr); \
- \
- /* Set TTBR bits as well */ \
- ttbr = (uint64_t) l1_xlation_table; \
- write_ttbr0_el##_el(ttbr); \
- \
- /* Ensure all translation table writes have drained */ \
- /* into memory, the TLB invalidation is complete, */ \
- /* and translation register writes are committed */ \
- /* before enabling the MMU */ \
- dsb(); \
- isb(); \
- \
- sctlr = read_sctlr_el##_el(); \
- sctlr |= SCTLR_WXN_BIT | SCTLR_M_BIT; \
- \
- if (flags & DISABLE_DCACHE) \
- sctlr &= ~SCTLR_C_BIT; \
- else \
- sctlr |= SCTLR_C_BIT; \
- \
- write_sctlr_el##_el(sctlr); \
- \
- /* Ensure the MMU enable takes effect immediately */ \
- isb(); \
- }
-
-/* Define EL1 and EL3 variants of the function enabling the MMU */
-DEFINE_ENABLE_MMU_EL(1,
- (tcr_ps_bits << TCR_EL1_IPS_SHIFT),
- tlbivmalle1)
-DEFINE_ENABLE_MMU_EL(3,
- TCR_EL3_RES1 | (tcr_ps_bits << TCR_EL3_PS_SHIFT),
- tlbialle3)
diff --git a/lib/xlat_tables/aarch64/xlat_tables.c b/lib/xlat_tables/aarch64/xlat_tables.c
new file mode 100644
index 0000000..051e46a
--- /dev/null
+++ b/lib/xlat_tables/aarch64/xlat_tables.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2014-2016, 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 <arch_helpers.h>
+#include <assert.h>
+#include <cassert.h>
+#include <platform_def.h>
+#include <xlat_tables.h>
+#include "../xlat_tables_private.h"
+
+#define IS_POWER_OF_TWO(x) (((x) & ((x) - 1)) == 0)
+
+/*
+ * The virtual address space size must be a power of two (as set in TCR.T0SZ).
+ * As we start the initial lookup at level 1, it must also be between 2 GB and
+ * 512 GB (with the virtual address size therefore 31 to 39 bits). See section
+ * D4.2.5 in the ARMv8-A Architecture Reference Manual (DDI 0487A.i) for more
+ * information.
+ */
+CASSERT(ADDR_SPACE_SIZE >= (1ull << 31) && ADDR_SPACE_SIZE <= (1ull << 39) &&
+ IS_POWER_OF_TWO(ADDR_SPACE_SIZE), assert_valid_addr_space_size);
+
+#define UNSET_DESC ~0ul
+#define NUM_L1_ENTRIES (ADDR_SPACE_SIZE >> L1_XLAT_ADDRESS_SHIFT)
+
+static uint64_t l1_xlation_table[NUM_L1_ENTRIES]
+ __aligned(NUM_L1_ENTRIES * sizeof(uint64_t));
+
+static unsigned long long tcr_ps_bits;
+
+static unsigned long long calc_physical_addr_size_bits(
+ unsigned long long max_addr)
+{
+ /* Physical address can't exceed 48 bits */
+ assert((max_addr & ADDR_MASK_48_TO_63) == 0);
+
+ /* 48 bits address */
+ if (max_addr & ADDR_MASK_44_TO_47)
+ return TCR_PS_BITS_256TB;
+
+ /* 44 bits address */
+ if (max_addr & ADDR_MASK_42_TO_43)
+ return TCR_PS_BITS_16TB;
+
+ /* 42 bits address */
+ if (max_addr & ADDR_MASK_40_TO_41)
+ return TCR_PS_BITS_4TB;
+
+ /* 40 bits address */
+ if (max_addr & ADDR_MASK_36_TO_39)
+ return TCR_PS_BITS_1TB;
+
+ /* 36 bits address */
+ if (max_addr & ADDR_MASK_32_TO_35)
+ return TCR_PS_BITS_64GB;
+
+ return TCR_PS_BITS_4GB;
+}
+
+void init_xlat_tables(void)
+{
+ unsigned long long max_pa;
+ uintptr_t max_va;
+ print_mmap();
+ init_xlation_table(0, l1_xlation_table, 1, &max_va, &max_pa);
+ tcr_ps_bits = calc_physical_addr_size_bits(max_pa);
+ assert(max_va < ADDR_SPACE_SIZE);
+}
+
+/*******************************************************************************
+ * Macro generating the code for the function enabling the MMU in the given
+ * exception level, assuming that the pagetables have already been created.
+ *
+ * _el: Exception level at which the function will run
+ * _tcr_extra: Extra bits to set in the TCR register. This mask will
+ * be OR'ed with the default TCR value.
+ * _tlbi_fct: Function to invalidate the TLBs at the current
+ * exception level
+ ******************************************************************************/
+#define DEFINE_ENABLE_MMU_EL(_el, _tcr_extra, _tlbi_fct) \
+ void enable_mmu_el##_el(unsigned int flags) \
+ { \
+ uint64_t mair, tcr, ttbr; \
+ uint32_t sctlr; \
+ \
+ assert(IS_IN_EL(_el)); \
+ assert((read_sctlr_el##_el() & SCTLR_M_BIT) == 0); \
+ \
+ /* Set attributes in the right indices of the MAIR */ \
+ mair = MAIR_ATTR_SET(ATTR_DEVICE, ATTR_DEVICE_INDEX); \
+ mair |= MAIR_ATTR_SET(ATTR_IWBWA_OWBWA_NTR, \
+ ATTR_IWBWA_OWBWA_NTR_INDEX); \
+ mair |= MAIR_ATTR_SET(ATTR_NON_CACHEABLE, \
+ ATTR_NON_CACHEABLE_INDEX); \
+ write_mair_el##_el(mair); \
+ \
+ /* Invalidate TLBs at the current exception level */ \
+ _tlbi_fct(); \
+ \
+ /* Set TCR bits as well. */ \
+ /* Inner & outer WBWA & shareable + T0SZ = 32 */ \
+ tcr = TCR_SH_INNER_SHAREABLE | TCR_RGN_OUTER_WBA | \
+ TCR_RGN_INNER_WBA | \
+ (64 - __builtin_ctzl(ADDR_SPACE_SIZE)); \
+ tcr |= _tcr_extra; \
+ write_tcr_el##_el(tcr); \
+ \
+ /* Set TTBR bits as well */ \
+ ttbr = (uint64_t) l1_xlation_table; \
+ write_ttbr0_el##_el(ttbr); \
+ \
+ /* Ensure all translation table writes have drained */ \
+ /* into memory, the TLB invalidation is complete, */ \
+ /* and translation register writes are committed */ \
+ /* before enabling the MMU */ \
+ dsb(); \
+ isb(); \
+ \
+ sctlr = read_sctlr_el##_el(); \
+ sctlr |= SCTLR_WXN_BIT | SCTLR_M_BIT; \
+ \
+ if (flags & DISABLE_DCACHE) \
+ sctlr &= ~SCTLR_C_BIT; \
+ else \
+ sctlr |= SCTLR_C_BIT; \
+ \
+ write_sctlr_el##_el(sctlr); \
+ \
+ /* Ensure the MMU enable takes effect immediately */ \
+ isb(); \
+ }
+
+/* Define EL1 and EL3 variants of the function enabling the MMU */
+DEFINE_ENABLE_MMU_EL(1,
+ (tcr_ps_bits << TCR_EL1_IPS_SHIFT),
+ tlbivmalle1)
+DEFINE_ENABLE_MMU_EL(3,
+ TCR_EL3_RES1 | (tcr_ps_bits << TCR_EL3_PS_SHIFT),
+ tlbialle3)
diff --git a/lib/xlat_tables/xlat_tables_common.c b/lib/xlat_tables/xlat_tables_common.c
new file mode 100644
index 0000000..d686c8d
--- /dev/null
+++ b/lib/xlat_tables/xlat_tables_common.c
@@ -0,0 +1,281 @@
+/*
+ * Copyright (c) 2016, 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 <arch_helpers.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <cassert.h>
+#include <debug.h>
+#include <platform_def.h>
+#include <string.h>
+#include <xlat_tables.h>
+
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+#define LVL0_SPACER ""
+#define LVL1_SPACER " "
+#define LVL2_SPACER " "
+#define LVL3_SPACER " "
+#define get_level_spacer(level) \
+ (((level) == 0) ? LVL0_SPACER : \
+ (((level) == 1) ? LVL1_SPACER : \
+ (((level) == 2) ? LVL2_SPACER : LVL3_SPACER)))
+#define debug_print(...) tf_printf(__VA_ARGS__)
+#else
+#define debug_print(...) ((void)0)
+#endif
+
+#define UNSET_DESC ~0ul
+
+static uint64_t xlat_tables[MAX_XLAT_TABLES][XLAT_TABLE_ENTRIES]
+ __aligned(XLAT_TABLE_SIZE) __section("xlat_table");
+
+static unsigned next_xlat;
+static unsigned long long xlat_max_pa;
+static uintptr_t xlat_max_va;
+
+/*
+ * Array of all memory regions stored in order of ascending base address.
+ * The list is terminated by the first entry with size == 0.
+ */
+static mmap_region_t mmap[MAX_MMAP_REGIONS + 1];
+
+
+void print_mmap(void)
+{
+#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
+ debug_print("mmap:\n");
+ mmap_region_t *mm = mmap;
+ while (mm->size) {
+ debug_print(" VA:%p PA:0x%llx size:0x%zx attr:0x%x\n",
+ (void *)mm->base_va, mm->base_pa,
+ mm->size, mm->attr);
+ ++mm;
+ };
+ debug_print("\n");
+#endif
+}
+
+void mmap_add_region(unsigned long long base_pa, uintptr_t base_va,
+ size_t size, unsigned int attr)
+{
+ mmap_region_t *mm = mmap;
+ mmap_region_t *mm_last = mm + ARRAY_SIZE(mmap) - 1;
+ unsigned long long pa_end = base_pa + size - 1;
+ uintptr_t va_end = base_va + size - 1;
+
+ assert(IS_PAGE_ALIGNED(base_pa));
+ assert(IS_PAGE_ALIGNED(base_va));
+ assert(IS_PAGE_ALIGNED(size));
+
+ if (!size)
+ return;
+
+ /* Find correct place in mmap to insert new region */
+ while (mm->base_va < base_va && mm->size)
+ ++mm;
+
+ /* Make room for new region by moving other regions up by one place */
+ memmove(mm + 1, mm, (uintptr_t)mm_last - (uintptr_t)mm);
+
+ /* Check we haven't lost the empty sentinal from the end of the array */
+ assert(mm_last->size == 0);
+
+ mm->base_pa = base_pa;
+ mm->base_va = base_va;
+ mm->size = size;
+ mm->attr = attr;
+
+ if (pa_end > xlat_max_pa)
+ xlat_max_pa = pa_end;
+ if (va_end > xlat_max_va)
+ xlat_max_va = va_end;
+}
+
+void mmap_add(const mmap_region_t *mm)
+{
+ while (mm->size) {
+ mmap_add_region(mm->base_pa, mm->base_va, mm->size, mm->attr);
+ ++mm;
+ }
+}
+
+static uint64_t mmap_desc(unsigned attr, unsigned long long addr_pa,
+ int level)
+{
+ uint64_t desc = addr_pa;
+ int mem_type;
+
+ desc |= level == 3 ? TABLE_DESC : BLOCK_DESC;
+
+ desc |= attr & MT_NS ? LOWER_ATTRS(NS) : 0;
+
+ desc |= attr & MT_RW ? LOWER_ATTRS(AP_RW) : LOWER_ATTRS(AP_RO);
+
+ desc |= LOWER_ATTRS(ACCESS_FLAG);
+
+ mem_type = MT_TYPE(attr);
+ if (mem_type == MT_MEMORY) {
+ desc |= LOWER_ATTRS(ATTR_IWBWA_OWBWA_NTR_INDEX | ISH);
+ if (attr & MT_RW)
+ desc |= UPPER_ATTRS(XN);
+ } else if (mem_type == MT_NON_CACHEABLE) {
+ desc |= LOWER_ATTRS(ATTR_NON_CACHEABLE_INDEX | OSH);
+ if (attr & MT_RW)
+ desc |= UPPER_ATTRS(XN);
+ } else {
+ assert(mem_type == MT_DEVICE);
+ desc |= LOWER_ATTRS(ATTR_DEVICE_INDEX | OSH);
+ desc |= UPPER_ATTRS(XN);
+ }
+
+ debug_print((mem_type == MT_MEMORY) ? "MEM" :
+ ((mem_type == MT_NON_CACHEABLE) ? "NC" : "DEV"));
+ debug_print(attr & MT_RW ? "-RW" : "-RO");
+ debug_print(attr & MT_NS ? "-NS" : "-S");
+
+ return desc;
+}
+
+static int mmap_region_attr(mmap_region_t *mm, uintptr_t base_va,
+ size_t size)
+{
+ int attr = mm->attr;
+ int old_mem_type, new_mem_type;
+
+ for (;;) {
+ ++mm;
+
+ if (!mm->size)
+ return attr; /* Reached end of list */
+
+ if (mm->base_va >= base_va + size)
+ return attr; /* Next region is after area so end */
+
+ if (mm->base_va + mm->size <= base_va)
+ continue; /* Next region has already been overtaken */
+
+ if ((mm->attr & attr) == attr)
+ continue; /* Region doesn't override attribs so skip */
+
+ /*
+ * Update memory mapping attributes in 2 steps:
+ * 1) Update access permissions and security state flags
+ * 2) Update memory type.
+ *
+ * See xlat_tables.h for details about the attributes priority
+ * system and the rules dictating whether attributes should be
+ * updated.
+ */
+ old_mem_type = MT_TYPE(attr);
+ new_mem_type = MT_TYPE(mm->attr);
+ attr &= mm->attr;
+ if (new_mem_type < old_mem_type)
+ attr = (attr & ~MT_TYPE_MASK) | new_mem_type;
+
+ if (mm->base_va > base_va ||
+ mm->base_va + mm->size < base_va + size)
+ return -1; /* Region doesn't fully cover our area */
+ }
+}
+
+static mmap_region_t *init_xlation_table_inner(mmap_region_t *mm,
+ uintptr_t base_va,
+ uint64_t *table,
+ int level)
+{
+ unsigned level_size_shift = L1_XLAT_ADDRESS_SHIFT - (level - 1) *
+ XLAT_TABLE_ENTRIES_SHIFT;
+ unsigned level_size = 1 << level_size_shift;
+ unsigned long long level_index_mask = XLAT_TABLE_ENTRIES_MASK <<
+ level_size_shift;
+
+ assert(level > 0 && level <= 3);
+
+ debug_print("New xlat table:\n");
+
+ do {
+ uint64_t desc = UNSET_DESC;
+
+ if (!mm->size) {
+ /* Done mapping regions; finish zeroing the table */
+ desc = INVALID_DESC;
+ } else if (mm->base_va + mm->size <= base_va) {
+ /* Area now after the region so skip it */
+ ++mm;
+ continue;
+ }
+
+ debug_print("%s VA:%p size:0x%x ", get_level_spacer(level),
+ (void *)base_va, level_size);
+
+ if (mm->base_va >= base_va + level_size) {
+ /* Next region is after area so nothing to map yet */
+ desc = INVALID_DESC;
+ } else if (mm->base_va <= base_va && mm->base_va + mm->size >=
+ base_va + level_size) {
+ /* Next region covers all of area */
+ int attr = mmap_region_attr(mm, base_va, level_size);
+ if (attr >= 0)
+ desc = mmap_desc(attr,
+ base_va - mm->base_va + mm->base_pa,
+ level);
+ }
+ /* else Next region only partially covers area, so need */
+
+ if (desc == UNSET_DESC) {
+ /* Area not covered by a region so need finer table */
+ uint64_t *new_table = xlat_tables[next_xlat++];
+ assert(next_xlat <= MAX_XLAT_TABLES);
+ desc = TABLE_DESC | (unsigned long)new_table;
+
+ /* Recurse to fill in new table */
+ mm = init_xlation_table_inner(mm, base_va,
+ new_table, level+1);
+ }
+
+ debug_print("\n");
+
+ *table++ = desc;
+ base_va += level_size;
+ } while ((base_va & level_index_mask) && (base_va < ADDR_SPACE_SIZE));
+
+ return mm;
+}
+
+void init_xlation_table(uintptr_t base_va, uint64_t *table,
+ int level, uintptr_t *max_va,
+ unsigned long long *max_pa)
+{
+
+ init_xlation_table_inner(mmap, base_va, table, level);
+ *max_va = xlat_max_va;
+ *max_pa = xlat_max_pa;
+}
diff --git a/lib/xlat_tables/xlat_tables_private.h b/lib/xlat_tables/xlat_tables_private.h
new file mode 100644
index 0000000..389bb0b
--- /dev/null
+++ b/lib/xlat_tables/xlat_tables_private.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2016, 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.
+ */
+
+#ifndef __XLAT_TABLES_PRIVATE_H__
+#define __XLAT_TABLES_PRIVATE_H__
+
+void print_mmap(void);
+void init_xlation_table(uintptr_t base_va, uint64_t *table,
+ int level, uintptr_t *max_va,
+ unsigned long long *max_pa);
+
+#endif /* __XLAT_TABLES_PRIVATE_H__ */
