Lee Kai Xuan
mbed-os
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erkin yucel
Diff: cmsis/core_ca_mmu.h
- Revision:
- 0:f269e3021894
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/cmsis/core_ca_mmu.h Sun Oct 23 15:10:02 2016 +0000
@@ -0,0 +1,847 @@
+;/**************************************************************************//**
+; * @file core_ca_mmu.h
+; * @brief MMU Startup File for A9_MP Device Series
+; * @version V1.01
+; * @date 10 Sept 2014
+; *
+; * @note
+; *
+; ******************************************************************************/
+;/* Copyright (c) 2012-2014 ARM LIMITED
+;
+; 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 COPYRIGHT HOLDERS AND 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.
+; ---------------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#ifndef _MMU_FUNC_H
+#define _MMU_FUNC_H
+
+#define SECTION_DESCRIPTOR (0x2)
+#define SECTION_MASK (0xFFFFFFFC)
+
+#define SECTION_TEXCB_MASK (0xFFFF8FF3)
+#define SECTION_B_SHIFT (2)
+#define SECTION_C_SHIFT (3)
+#define SECTION_TEX0_SHIFT (12)
+#define SECTION_TEX1_SHIFT (13)
+#define SECTION_TEX2_SHIFT (14)
+
+#define SECTION_XN_MASK (0xFFFFFFEF)
+#define SECTION_XN_SHIFT (4)
+
+#define SECTION_DOMAIN_MASK (0xFFFFFE1F)
+#define SECTION_DOMAIN_SHIFT (5)
+
+#define SECTION_P_MASK (0xFFFFFDFF)
+#define SECTION_P_SHIFT (9)
+
+#define SECTION_AP_MASK (0xFFFF73FF)
+#define SECTION_AP_SHIFT (10)
+#define SECTION_AP2_SHIFT (15)
+
+#define SECTION_S_MASK (0xFFFEFFFF)
+#define SECTION_S_SHIFT (16)
+
+#define SECTION_NG_MASK (0xFFFDFFFF)
+#define SECTION_NG_SHIFT (17)
+
+#define SECTION_NS_MASK (0xFFF7FFFF)
+#define SECTION_NS_SHIFT (19)
+
+
+#define PAGE_L1_DESCRIPTOR (0x1)
+#define PAGE_L1_MASK (0xFFFFFFFC)
+
+#define PAGE_L2_4K_DESC (0x2)
+#define PAGE_L2_4K_MASK (0xFFFFFFFD)
+
+#define PAGE_L2_64K_DESC (0x1)
+#define PAGE_L2_64K_MASK (0xFFFFFFFC)
+
+#define PAGE_4K_TEXCB_MASK (0xFFFFFE33)
+#define PAGE_4K_B_SHIFT (2)
+#define PAGE_4K_C_SHIFT (3)
+#define PAGE_4K_TEX0_SHIFT (6)
+#define PAGE_4K_TEX1_SHIFT (7)
+#define PAGE_4K_TEX2_SHIFT (8)
+
+#define PAGE_64K_TEXCB_MASK (0xFFFF8FF3)
+#define PAGE_64K_B_SHIFT (2)
+#define PAGE_64K_C_SHIFT (3)
+#define PAGE_64K_TEX0_SHIFT (12)
+#define PAGE_64K_TEX1_SHIFT (13)
+#define PAGE_64K_TEX2_SHIFT (14)
+
+#define PAGE_TEXCB_MASK (0xFFFF8FF3)
+#define PAGE_B_SHIFT (2)
+#define PAGE_C_SHIFT (3)
+#define PAGE_TEX_SHIFT (12)
+
+#define PAGE_XN_4K_MASK (0xFFFFFFFE)
+#define PAGE_XN_4K_SHIFT (0)
+#define PAGE_XN_64K_MASK (0xFFFF7FFF)
+#define PAGE_XN_64K_SHIFT (15)
+
+
+#define PAGE_DOMAIN_MASK (0xFFFFFE1F)
+#define PAGE_DOMAIN_SHIFT (5)
+
+#define PAGE_P_MASK (0xFFFFFDFF)
+#define PAGE_P_SHIFT (9)
+
+#define PAGE_AP_MASK (0xFFFFFDCF)
+#define PAGE_AP_SHIFT (4)
+#define PAGE_AP2_SHIFT (9)
+
+#define PAGE_S_MASK (0xFFFFFBFF)
+#define PAGE_S_SHIFT (10)
+
+#define PAGE_NG_MASK (0xFFFFF7FF)
+#define PAGE_NG_SHIFT (11)
+
+#define PAGE_NS_MASK (0xFFFFFFF7)
+#define PAGE_NS_SHIFT (3)
+
+#define OFFSET_1M (0x00100000)
+#define OFFSET_64K (0x00010000)
+#define OFFSET_4K (0x00001000)
+
+#define DESCRIPTOR_FAULT (0x00000000)
+
+/* ########################### MMU Function Access ########################### */
+/** \ingroup MMU_FunctionInterface
+ \defgroup MMU_Functions MMU Functions Interface
+ @{
+ */
+
+/* Attributes enumerations */
+
+/* Region size attributes */
+typedef enum
+{
+ SECTION,
+ PAGE_4k,
+ PAGE_64k,
+} mmu_region_size_Type;
+
+/* Region type attributes */
+typedef enum
+{
+ NORMAL,
+ DEVICE,
+ SHARED_DEVICE,
+ NON_SHARED_DEVICE,
+ STRONGLY_ORDERED
+} mmu_memory_Type;
+
+/* Region cacheability attributes */
+typedef enum
+{
+ NON_CACHEABLE,
+ WB_WA,
+ WT,
+ WB_NO_WA,
+} mmu_cacheability_Type;
+
+/* Region parity check attributes */
+typedef enum
+{
+ ECC_DISABLED,
+ ECC_ENABLED,
+} mmu_ecc_check_Type;
+
+/* Region execution attributes */
+typedef enum
+{
+ EXECUTE,
+ NON_EXECUTE,
+} mmu_execute_Type;
+
+/* Region global attributes */
+typedef enum
+{
+ GLOBAL,
+ NON_GLOBAL,
+} mmu_global_Type;
+
+/* Region shareability attributes */
+typedef enum
+{
+ NON_SHARED,
+ SHARED,
+} mmu_shared_Type;
+
+/* Region security attributes */
+typedef enum
+{
+ SECURE,
+ NON_SECURE,
+} mmu_secure_Type;
+
+/* Region access attributes */
+typedef enum
+{
+ NO_ACCESS,
+ RW,
+ READ,
+} mmu_access_Type;
+
+/* Memory Region definition */
+typedef struct RegionStruct {
+ mmu_region_size_Type rg_t;
+ mmu_memory_Type mem_t;
+ uint8_t domain;
+ mmu_cacheability_Type inner_norm_t;
+ mmu_cacheability_Type outer_norm_t;
+ mmu_ecc_check_Type e_t;
+ mmu_execute_Type xn_t;
+ mmu_global_Type g_t;
+ mmu_secure_Type sec_t;
+ mmu_access_Type priv_t;
+ mmu_access_Type user_t;
+ mmu_shared_Type sh_t;
+
+} mmu_region_attributes_Type;
+
+/** \brief Set section execution-never attribute
+
+ The function sets section execution-never attribute
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] xn Section execution-never attribute : EXECUTE , NON_EXECUTE.
+
+ \return 0
+ */
+__STATIC_INLINE int __xn_section(uint32_t *descriptor_l1, mmu_execute_Type xn)
+{
+ *descriptor_l1 &= SECTION_XN_MASK;
+ *descriptor_l1 |= ((xn & 0x1) << SECTION_XN_SHIFT);
+ return 0;
+}
+
+/** \brief Set section domain
+
+ The function sets section domain
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] domain Section domain
+
+ \return 0
+ */
+__STATIC_INLINE int __domain_section(uint32_t *descriptor_l1, uint8_t domain)
+{
+ *descriptor_l1 &= SECTION_DOMAIN_MASK;
+ *descriptor_l1 |= ((domain & 0xF) << SECTION_DOMAIN_SHIFT);
+ return 0;
+}
+
+/** \brief Set section parity check
+
+ The function sets section parity check
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] p_bit Parity check: ECC_DISABLED, ECC_ENABLED
+
+ \return 0
+ */
+__STATIC_INLINE int __p_section(uint32_t *descriptor_l1, mmu_ecc_check_Type p_bit)
+{
+ *descriptor_l1 &= SECTION_P_MASK;
+ *descriptor_l1 |= ((p_bit & 0x1) << SECTION_P_SHIFT);
+ return 0;
+}
+
+/** \brief Set section access privileges
+
+ The function sets section access privileges
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] user User Level Access: NO_ACCESS, RW, READ
+ \param [in] priv Privilege Level Access: NO_ACCESS, RW, READ
+ \param [in] afe Access flag enable
+
+ \return 0
+ */
+__STATIC_INLINE int __ap_section(uint32_t *descriptor_l1, mmu_access_Type user, mmu_access_Type priv, uint32_t afe)
+{
+ uint32_t ap = 0;
+
+ if (afe == 0) { //full access
+ if ((priv == NO_ACCESS) && (user == NO_ACCESS)) { ap = 0x0; }
+ else if ((priv == RW) && (user == NO_ACCESS)) { ap = 0x1; }
+ else if ((priv == RW) && (user == READ)) { ap = 0x2; }
+ else if ((priv == RW) && (user == RW)) { ap = 0x3; }
+ else if ((priv == READ) && (user == NO_ACCESS)) { ap = 0x5; }
+ else if ((priv == READ) && (user == READ)) { ap = 0x7; }
+ }
+
+ else { //Simplified access
+ if ((priv == RW) && (user == NO_ACCESS)) { ap = 0x1; }
+ else if ((priv == RW) && (user == RW)) { ap = 0x3; }
+ else if ((priv == READ) && (user == NO_ACCESS)) { ap = 0x5; }
+ else if ((priv == READ) && (user == READ)) { ap = 0x7; }
+ }
+
+ *descriptor_l1 &= SECTION_AP_MASK;
+ *descriptor_l1 |= (ap & 0x3) << SECTION_AP_SHIFT;
+ *descriptor_l1 |= ((ap & 0x4)>>2) << SECTION_AP2_SHIFT;
+
+ return 0;
+}
+
+/** \brief Set section shareability
+
+ The function sets section shareability
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] s_bit Section shareability: NON_SHARED, SHARED
+
+ \return 0
+ */
+__STATIC_INLINE int __shared_section(uint32_t *descriptor_l1, mmu_shared_Type s_bit)
+{
+ *descriptor_l1 &= SECTION_S_MASK;
+ *descriptor_l1 |= ((s_bit & 0x1) << SECTION_S_SHIFT);
+ return 0;
+}
+
+/** \brief Set section Global attribute
+
+ The function sets section Global attribute
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] g_bit Section attribute: GLOBAL, NON_GLOBAL
+
+ \return 0
+ */
+__STATIC_INLINE int __global_section(uint32_t *descriptor_l1, mmu_global_Type g_bit)
+{
+ *descriptor_l1 &= SECTION_NG_MASK;
+ *descriptor_l1 |= ((g_bit & 0x1) << SECTION_NG_SHIFT);
+ return 0;
+}
+
+/** \brief Set section Security attribute
+
+ The function sets section Global attribute
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] s_bit Section Security attribute: SECURE, NON_SECURE
+
+ \return 0
+ */
+__STATIC_INLINE int __secure_section(uint32_t *descriptor_l1, mmu_secure_Type s_bit)
+{
+ *descriptor_l1 &= SECTION_NS_MASK;
+ *descriptor_l1 |= ((s_bit & 0x1) << SECTION_NS_SHIFT);
+ return 0;
+}
+
+/* Page 4k or 64k */
+/** \brief Set 4k/64k page execution-never attribute
+
+ The function sets 4k/64k page execution-never attribute
+
+ \param [out] descriptor_l2 L2 descriptor.
+ \param [in] xn Page execution-never attribute : EXECUTE , NON_EXECUTE.
+ \param [in] page Page size: PAGE_4k, PAGE_64k,
+
+ \return 0
+ */
+__STATIC_INLINE int __xn_page(uint32_t *descriptor_l2, mmu_execute_Type xn, mmu_region_size_Type page)
+{
+ if (page == PAGE_4k)
+ {
+ *descriptor_l2 &= PAGE_XN_4K_MASK;
+ *descriptor_l2 |= ((xn & 0x1) << PAGE_XN_4K_SHIFT);
+ }
+ else
+ {
+ *descriptor_l2 &= PAGE_XN_64K_MASK;
+ *descriptor_l2 |= ((xn & 0x1) << PAGE_XN_64K_SHIFT);
+ }
+ return 0;
+}
+
+/** \brief Set 4k/64k page domain
+
+ The function sets 4k/64k page domain
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] domain Page domain
+
+ \return 0
+ */
+__STATIC_INLINE int __domain_page(uint32_t *descriptor_l1, uint8_t domain)
+{
+ *descriptor_l1 &= PAGE_DOMAIN_MASK;
+ *descriptor_l1 |= ((domain & 0xf) << PAGE_DOMAIN_SHIFT);
+ return 0;
+}
+
+/** \brief Set 4k/64k page parity check
+
+ The function sets 4k/64k page parity check
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] p_bit Parity check: ECC_DISABLED, ECC_ENABLED
+
+ \return 0
+ */
+__STATIC_INLINE int __p_page(uint32_t *descriptor_l1, mmu_ecc_check_Type p_bit)
+{
+ *descriptor_l1 &= SECTION_P_MASK;
+ *descriptor_l1 |= ((p_bit & 0x1) << SECTION_P_SHIFT);
+ return 0;
+}
+
+/** \brief Set 4k/64k page access privileges
+
+ The function sets 4k/64k page access privileges
+
+ \param [out] descriptor_l2 L2 descriptor.
+ \param [in] user User Level Access: NO_ACCESS, RW, READ
+ \param [in] priv Privilege Level Access: NO_ACCESS, RW, READ
+ \param [in] afe Access flag enable
+
+ \return 0
+ */
+__STATIC_INLINE int __ap_page(uint32_t *descriptor_l2, mmu_access_Type user, mmu_access_Type priv, uint32_t afe)
+{
+ uint32_t ap = 0;
+
+ if (afe == 0) { //full access
+ if ((priv == NO_ACCESS) && (user == NO_ACCESS)) { ap = 0x0; }
+ else if ((priv == RW) && (user == NO_ACCESS)) { ap = 0x1; }
+ else if ((priv == RW) && (user == READ)) { ap = 0x2; }
+ else if ((priv == RW) && (user == RW)) { ap = 0x3; }
+ else if ((priv == READ) && (user == NO_ACCESS)) { ap = 0x5; }
+ else if ((priv == READ) && (user == READ)) { ap = 0x6; }
+ }
+
+ else { //Simplified access
+ if ((priv == RW) && (user == NO_ACCESS)) { ap = 0x1; }
+ else if ((priv == RW) && (user == RW)) { ap = 0x3; }
+ else if ((priv == READ) && (user == NO_ACCESS)) { ap = 0x5; }
+ else if ((priv == READ) && (user == READ)) { ap = 0x7; }
+ }
+
+ *descriptor_l2 &= PAGE_AP_MASK;
+ *descriptor_l2 |= (ap & 0x3) << PAGE_AP_SHIFT;
+ *descriptor_l2 |= ((ap & 0x4)>>2) << PAGE_AP2_SHIFT;
+
+ return 0;
+}
+
+/** \brief Set 4k/64k page shareability
+
+ The function sets 4k/64k page shareability
+
+ \param [out] descriptor_l2 L2 descriptor.
+ \param [in] s_bit 4k/64k page shareability: NON_SHARED, SHARED
+
+ \return 0
+ */
+__STATIC_INLINE int __shared_page(uint32_t *descriptor_l2, mmu_shared_Type s_bit)
+{
+ *descriptor_l2 &= PAGE_S_MASK;
+ *descriptor_l2 |= ((s_bit & 0x1) << PAGE_S_SHIFT);
+ return 0;
+}
+
+/** \brief Set 4k/64k page Global attribute
+
+ The function sets 4k/64k page Global attribute
+
+ \param [out] descriptor_l2 L2 descriptor.
+ \param [in] g_bit 4k/64k page attribute: GLOBAL, NON_GLOBAL
+
+ \return 0
+ */
+__STATIC_INLINE int __global_page(uint32_t *descriptor_l2, mmu_global_Type g_bit)
+{
+ *descriptor_l2 &= PAGE_NG_MASK;
+ *descriptor_l2 |= ((g_bit & 0x1) << PAGE_NG_SHIFT);
+ return 0;
+}
+
+/** \brief Set 4k/64k page Security attribute
+
+ The function sets 4k/64k page Global attribute
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] s_bit 4k/64k page Security attribute: SECURE, NON_SECURE
+
+ \return 0
+ */
+__STATIC_INLINE int __secure_page(uint32_t *descriptor_l1, mmu_secure_Type s_bit)
+{
+ *descriptor_l1 &= PAGE_NS_MASK;
+ *descriptor_l1 |= ((s_bit & 0x1) << PAGE_NS_SHIFT);
+ return 0;
+}
+
+
+/** \brief Set Section memory attributes
+
+ The function sets section memory attributes
+
+ \param [out] descriptor_l1 L1 descriptor.
+ \param [in] mem Section memory type: NORMAL, DEVICE, SHARED_DEVICE, NON_SHARED_DEVICE, STRONGLY_ORDERED
+ \param [in] outer Outer cacheability: NON_CACHEABLE, WB_WA, WT, WB_NO_WA,
+ \param [in] inner Inner cacheability: NON_CACHEABLE, WB_WA, WT, WB_NO_WA,
+
+ \return 0
+ */
+__STATIC_INLINE int __memory_section(uint32_t *descriptor_l1, mmu_memory_Type mem, mmu_cacheability_Type outer, mmu_cacheability_Type inner)
+{
+ *descriptor_l1 &= SECTION_TEXCB_MASK;
+
+ if (STRONGLY_ORDERED == mem)
+ {
+ return 0;
+ }
+ else if (SHARED_DEVICE == mem)
+ {
+ *descriptor_l1 |= (1 << SECTION_B_SHIFT);
+ }
+ else if (NON_SHARED_DEVICE == mem)
+ {
+ *descriptor_l1 |= (1 << SECTION_TEX1_SHIFT);
+ }
+ else if (NORMAL == mem)
+ {
+ *descriptor_l1 |= 1 << SECTION_TEX2_SHIFT;
+ switch(inner)
+ {
+ case NON_CACHEABLE:
+ break;
+ case WB_WA:
+ *descriptor_l1 |= (1 << SECTION_B_SHIFT);
+ break;
+ case WT:
+ *descriptor_l1 |= 1 << SECTION_C_SHIFT;
+ break;
+ case WB_NO_WA:
+ *descriptor_l1 |= (1 << SECTION_B_SHIFT) | (1 << SECTION_C_SHIFT);
+ break;
+ }
+ switch(outer)
+ {
+ case NON_CACHEABLE:
+ break;
+ case WB_WA:
+ *descriptor_l1 |= (1 << SECTION_TEX0_SHIFT);
+ break;
+ case WT:
+ *descriptor_l1 |= 1 << SECTION_TEX1_SHIFT;
+ break;
+ case WB_NO_WA:
+ *descriptor_l1 |= (1 << SECTION_TEX0_SHIFT) | (1 << SECTION_TEX0_SHIFT);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+/** \brief Set 4k/64k page memory attributes
+
+ The function sets 4k/64k page memory attributes
+
+ \param [out] descriptor_l2 L2 descriptor.
+ \param [in] mem 4k/64k page memory type: NORMAL, DEVICE, SHARED_DEVICE, NON_SHARED_DEVICE, STRONGLY_ORDERED
+ \param [in] outer Outer cacheability: NON_CACHEABLE, WB_WA, WT, WB_NO_WA,
+ \param [in] inner Inner cacheability: NON_CACHEABLE, WB_WA, WT, WB_NO_WA,
+
+ \return 0
+ */
+__STATIC_INLINE int __memory_page(uint32_t *descriptor_l2, mmu_memory_Type mem, mmu_cacheability_Type outer, mmu_cacheability_Type inner, mmu_region_size_Type page)
+{
+ *descriptor_l2 &= PAGE_4K_TEXCB_MASK;
+
+ if (page == PAGE_64k)
+ {
+ //same as section
+ __memory_section(descriptor_l2, mem, outer, inner);
+ }
+ else
+ {
+ if (STRONGLY_ORDERED == mem)
+ {
+ return 0;
+ }
+ else if (SHARED_DEVICE == mem)
+ {
+ *descriptor_l2 |= (1 << PAGE_4K_B_SHIFT);
+ }
+ else if (NON_SHARED_DEVICE == mem)
+ {
+ *descriptor_l2 |= (1 << PAGE_4K_TEX1_SHIFT);
+ }
+ else if (NORMAL == mem)
+ {
+ *descriptor_l2 |= 1 << PAGE_4K_TEX2_SHIFT;
+ switch(inner)
+ {
+ case NON_CACHEABLE:
+ break;
+ case WB_WA:
+ *descriptor_l2 |= (1 << PAGE_4K_B_SHIFT);
+ break;
+ case WT:
+ *descriptor_l2 |= 1 << PAGE_4K_C_SHIFT;
+ break;
+ case WB_NO_WA:
+ *descriptor_l2 |= (1 << PAGE_4K_B_SHIFT) | (1 << PAGE_4K_C_SHIFT);
+ break;
+ }
+ switch(outer)
+ {
+ case NON_CACHEABLE:
+ break;
+ case WB_WA:
+ *descriptor_l2 |= (1 << PAGE_4K_TEX0_SHIFT);
+ break;
+ case WT:
+ *descriptor_l2 |= 1 << PAGE_4K_TEX1_SHIFT;
+ break;
+ case WB_NO_WA:
+ *descriptor_l2 |= (1 << PAGE_4K_TEX0_SHIFT) | (1 << PAGE_4K_TEX0_SHIFT);
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
+
+/** \brief Create a L1 section descriptor
+
+ The function creates a section descriptor.
+
+ Assumptions:
+ - 16MB super sections not supported
+ - TEX remap disabled, so memory type and attributes are described directly by bits in the descriptor
+ - Functions always return 0
+
+ \param [out] descriptor L1 descriptor
+ \param [out] descriptor2 L2 descriptor
+ \param [in] reg Section attributes
+
+ \return 0
+ */
+__STATIC_INLINE int __get_section_descriptor(uint32_t *descriptor, mmu_region_attributes_Type reg)
+{
+ *descriptor = 0;
+
+ __memory_section(descriptor, reg.mem_t, reg.outer_norm_t, reg.inner_norm_t);
+ __xn_section(descriptor,reg.xn_t);
+ __domain_section(descriptor, reg.domain);
+ __p_section(descriptor, reg.e_t);
+ __ap_section(descriptor, reg.priv_t, reg.user_t, 1);
+ __shared_section(descriptor,reg.sh_t);
+ __global_section(descriptor,reg.g_t);
+ __secure_section(descriptor,reg.sec_t);
+ *descriptor &= SECTION_MASK;
+ *descriptor |= SECTION_DESCRIPTOR;
+
+ return 0;
+
+}
+
+
+/** \brief Create a L1 and L2 4k/64k page descriptor
+
+ The function creates a 4k/64k page descriptor.
+ Assumptions:
+ - TEX remap disabled, so memory type and attributes are described directly by bits in the descriptor
+ - Functions always return 0
+
+ \param [out] descriptor L1 descriptor
+ \param [out] descriptor2 L2 descriptor
+ \param [in] reg 4k/64k page attributes
+
+ \return 0
+ */
+__STATIC_INLINE int __get_page_descriptor(uint32_t *descriptor, uint32_t *descriptor2, mmu_region_attributes_Type reg)
+{
+ *descriptor = 0;
+ *descriptor2 = 0;
+
+ switch (reg.rg_t)
+ {
+ case PAGE_4k:
+ __memory_page(descriptor2, reg.mem_t, reg.outer_norm_t, reg.inner_norm_t, PAGE_4k);
+ __xn_page(descriptor2, reg.xn_t, PAGE_4k);
+ __domain_page(descriptor, reg.domain);
+ __p_page(descriptor, reg.e_t);
+ __ap_page(descriptor2, reg.priv_t, reg.user_t, 1);
+ __shared_page(descriptor2,reg.sh_t);
+ __global_page(descriptor2,reg.g_t);
+ __secure_page(descriptor,reg.sec_t);
+ *descriptor &= PAGE_L1_MASK;
+ *descriptor |= PAGE_L1_DESCRIPTOR;
+ *descriptor2 &= PAGE_L2_4K_MASK;
+ *descriptor2 |= PAGE_L2_4K_DESC;
+ break;
+
+ case PAGE_64k:
+ __memory_page(descriptor2, reg.mem_t, reg.outer_norm_t, reg.inner_norm_t, PAGE_64k);
+ __xn_page(descriptor2, reg.xn_t, PAGE_64k);
+ __domain_page(descriptor, reg.domain);
+ __p_page(descriptor, reg.e_t);
+ __ap_page(descriptor2, reg.priv_t, reg.user_t, 1);
+ __shared_page(descriptor2,reg.sh_t);
+ __global_page(descriptor2,reg.g_t);
+ __secure_page(descriptor,reg.sec_t);
+ *descriptor &= PAGE_L1_MASK;
+ *descriptor |= PAGE_L1_DESCRIPTOR;
+ *descriptor2 &= PAGE_L2_64K_MASK;
+ *descriptor2 |= PAGE_L2_64K_DESC;
+ break;
+
+ case SECTION:
+ //error
+ break;
+
+ }
+
+ return 0;
+
+}
+
+/** \brief Create a 1MB Section
+
+ \param [in] ttb Translation table base address
+ \param [in] base_address Section base address
+ \param [in] count Number of sections to create
+ \param [in] descriptor_l1 L1 descriptor (region attributes)
+
+ */
+__STATIC_INLINE void __TTSection(uint32_t *ttb, uint32_t base_address, uint32_t count, uint32_t descriptor_l1)
+{
+ uint32_t offset;
+ uint32_t entry;
+ uint32_t i;
+
+ offset = base_address >> 20;
+ entry = (base_address & 0xFFF00000) | descriptor_l1;
+
+ //4 bytes aligned
+ ttb = ttb + offset;
+
+ for (i = 0; i < count; i++ )
+ {
+ //4 bytes aligned
+ *ttb++ = entry;
+ entry += OFFSET_1M;
+ }
+}
+
+/** \brief Create a 4k page entry
+
+ \param [in] ttb L1 table base address
+ \param [in] base_address 4k base address
+ \param [in] count Number of 4k pages to create
+ \param [in] descriptor_l1 L1 descriptor (region attributes)
+ \param [in] ttb_l2 L2 table base address
+ \param [in] descriptor_l2 L2 descriptor (region attributes)
+
+ */
+__STATIC_INLINE void __TTPage_4k(uint32_t *ttb, uint32_t base_address, uint32_t count, uint32_t descriptor_l1, uint32_t *ttb_l2, uint32_t descriptor_l2 )
+{
+
+ uint32_t offset, offset2;
+ uint32_t entry, entry2;
+ uint32_t i;
+
+
+ offset = base_address >> 20;
+ entry = ((int)ttb_l2 & 0xFFFFFC00) | descriptor_l1;
+
+ //4 bytes aligned
+ ttb += offset;
+ //create l1_entry
+ *ttb = entry;
+
+ offset2 = (base_address & 0xff000) >> 12;
+ ttb_l2 += offset2;
+ entry2 = (base_address & 0xFFFFF000) | descriptor_l2;
+ for (i = 0; i < count; i++ )
+ {
+ //4 bytes aligned
+ *ttb_l2++ = entry2;
+ entry2 += OFFSET_4K;
+ }
+}
+
+/** \brief Create a 64k page entry
+
+ \param [in] ttb L1 table base address
+ \param [in] base_address 64k base address
+ \param [in] count Number of 64k pages to create
+ \param [in] descriptor_l1 L1 descriptor (region attributes)
+ \param [in] ttb_l2 L2 table base address
+ \param [in] descriptor_l2 L2 descriptor (region attributes)
+
+ */
+__STATIC_INLINE void __TTPage_64k(uint32_t *ttb, uint32_t base_address, uint32_t count, uint32_t descriptor_l1, uint32_t *ttb_l2, uint32_t descriptor_l2 )
+{
+ uint32_t offset, offset2;
+ uint32_t entry, entry2;
+ uint32_t i,j;
+
+
+ offset = base_address >> 20;
+ entry = ((int)ttb_l2 & 0xFFFFFC00) | descriptor_l1;
+
+ //4 bytes aligned
+ ttb += offset;
+ //create l1_entry
+ *ttb = entry;
+
+ offset2 = (base_address & 0xff000) >> 12;
+ ttb_l2 += offset2;
+ entry2 = (base_address & 0xFFFF0000) | descriptor_l2;
+ for (i = 0; i < count; i++ )
+ {
+ //create 16 entries
+ for (j = 0; j < 16; j++)
+ //4 bytes aligned
+ *ttb_l2++ = entry2;
+ entry2 += OFFSET_64K;
+ }
+}
+
+/*@} end of MMU_Functions */
+#endif
+
+#ifdef __cplusplus
+}
+#endif