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/Zephyr-latest/include/zephyr/sys/
Dsys_io.h1 /* Port and memory mapped registers I/O operations */
6 * SPDX-License-Identifier: Apache-2.0
147 /* Memory mapped registers I/O functions */
150 * @fn static inline void sys_write8(uint8_t data, mm_reg_t addr);
151 * @brief Write a byte to a memory mapped register
153 * This function writes a byte to the given memory mapped register.
156 * @param addr the memory mapped register address where to write the byte
160 * @fn static inline uint8_t sys_read8(mm_reg_t addr);
161 * @brief Read a byte from a memory mapped register
163 * This function reads a byte from the given memory mapped register.
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/Zephyr-latest/tests/kernel/mem_protect/mem_map/src/
Dmain.c4 * SPDX-License-Identifier: Apache-2.0
17 /* 32-bit IA32 page tables have no mechanism to restrict execution */
25 /* k_mem_map_phys_bare() doesn't have alignment requirements, any oddly-sized buffer
26 * can get mapped. BUF_SIZE has a odd size to make sure the mapped buffer
39 printk("Caught system error -- reason %d\n", reason);
81 /* Initialize read-write buf with some bytes */ in ZTEST()
110 /* Check that the read-only mapped area contains the expected data. */ in ZTEST()
164 (uintptr_t)(__test_mem_map_end - __test_mem_map_start), in ZTEST()
173 (uintptr_t)(__test_mem_map_end - __test_mem_map_start), in ZTEST()
194 uint8_t *mapped; in ZTEST() local
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/Zephyr-latest/drivers/mm/
Dmm_drv_common.h4 * SPDX-License-Identifier: Apache-2.0
18 * @brief Get the flags of mapped virtual address.
21 * a mapped virtual address. This is used internally for remapping.
26 * @param virt Page-aligned virtual address
27 * @param[out] flags flags of mapped virtual address
30 * @retval -EINVAL if invalid arguments are provided
31 * @retval -EFAULT if virtual address is not mapped
36 * @brief Test if address is page-aligned
38 * @param addr address to be tested
40 * @retval true if page-aligned
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/Zephyr-latest/include/zephyr/kernel/internal/
Dmm.h4 * SPDX-License-Identifier: Apache-2.0
23 * This is the offset to subtract from a virtual address mapped in the
41 #define K_MEM_VIRT_OFFSET ((CONFIG_KERNEL_VM_BASE + CONFIG_KERNEL_VM_OFFSET) - \
56 #define K_MEM_PHYS_ADDR(virt) ((virt) - K_MEM_VIRT_OFFSET)
71 * @brief Kernel is mapped in virtual memory if defined.
99 uintptr_t addr = (uintptr_t)virt; in k_mem_phys_addr() local
107 (addr >= CONFIG_KERNEL_VM_BASE) && in k_mem_phys_addr()
110 (addr < (CONFIG_KERNEL_VM_BASE + in k_mem_phys_addr()
117 /* Should be identity-mapped */ in k_mem_phys_addr()
120 (addr >= CONFIG_SRAM_BASE_ADDRESS) && in k_mem_phys_addr()
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/Zephyr-latest/include/zephyr/kernel/
Dmm.h4 * SPDX-License-Identifier: Apache-2.0
36 /** Write-through caching. Used by certain drivers. */
39 /** Full write-back caching. Any RAM mapped wants this. */
48 #define K_MEM_CACHE_MASK (BIT(3) - 1)
55 * Default is read-only, no user, no exec
60 /** Region will have read/write access (and not read-only) */
66 /** Region will be accessible to user mode (normally supervisor-only) */
77 /** Region will be mapped to 1:1 virtual and physical address */
98 * @brief The mapped region is not guaranteed to be zeroed.
111 * Such memory is guaranteed to never produce a page fault due to page-outs
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/Zephyr-latest/dts/bindings/espi/
Dnuvoton,npcx-espi-taf.yaml2 # SPDX-License-Identifier: Apache-2.0
10 compatible = "nuvoton,npcx-espi-taf";
13 mapped-addr = <0x68000000>;
14 max-read-sz = "NPCX_ESPI_TAF_MAX_READ_REQ_64B";
15 erase-sz = "NPCX_ESPI_TAF_ERASE_BLOCK_SIZE_4KB";
17 #address-cells = <1>;
18 #size-cells = <1>;
22 compatible: "nuvoton,npcx-espi-taf"
24 include: [espi-controller.yaml, pinctrl-device.yaml]
27 mapped-addr:
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/Zephyr-latest/dts/bindings/flash_controller/
Dnuvoton,npcx-fiu-nor.yaml2 # SPDX-License-Identifier: Apache-2.0
10 compatible ="nuvoton,npcx-fiu-nor";
14 qspi-flags = <NPCX_QSPI_SW_CS1>;
15 mapped-addr = <0x64000000>;
16 pinctrl-0 = <&int_flash_sl>;
17 pinctrl-names = "default";
20 compatible: "nuvoton,npcx-fiu-nor"
22 include: [flash-controller.yaml, pinctrl-device.yaml, "jedec,spi-nor-common.yaml"]
24 on-bus: qspi
27 mapped-addr:
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/Zephyr-latest/kernel/include/
Dmmu.h4 * SPDX-License-Identifier: Apache-2.0
16 #include <zephyr/linker/linker-defs.h>
36 /** Boot-time virtual start address of the kernel image. */
39 /** Boot-time virtual end address of the kernel image. */
42 /** Boot-time virtual address space size of the kernel image. */
43 #define K_MEM_KERNEL_VIRT_SIZE (K_MEM_KERNEL_VIRT_END - K_MEM_KERNEL_VIRT_START)
51 ((CONFIG_KERNEL_VM_BASE + CONFIG_KERNEL_VM_OFFSET) - \
65 #define K_MEM_BOOT_VIRT_TO_PHYS(virt) ((uintptr_t)(((uint8_t *)(virt)) - K_MEM_VM_OFFSET))
88 * - If it is enabled, which means all physical memory are mapped in virtual
92 * - If it is disabled, K_MEM_VM_FREE_START is the same K_MEM_KERNEL_VIRT_END which
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Dkernel_arch_interface.h4 * SPDX-License-Identifier: Apache-2.0
11 * Not all architecture-specific defines are here, APIs that are used
30 * @defgroup arch-timing Architecture timing APIs
35 * Architecture-specific implementation of busy-waiting
45 * @defgroup arch-threads Architecture thread APIs
46 * @ingroup arch-interface
50 /** Handle arch-specific logic for setting up new threads
52 * The stack and arch-specific thread state variables must be set up
64 * randomization and thread-local storage.
66 * Fields in thread->base will be initialized when this is called.
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/Zephyr-latest/include/zephyr/arch/common/
Dsys_io.h5 * SPDX-License-Identifier: Apache-2.0
8 /* Memory mapped registers I/O functions in non-arch-specific C code */
23 static ALWAYS_INLINE uint8_t sys_read8(mem_addr_t addr) in sys_read8() argument
25 return *(volatile uint8_t *)addr; in sys_read8()
28 static ALWAYS_INLINE void sys_write8(uint8_t data, mem_addr_t addr) in sys_write8() argument
30 *(volatile uint8_t *)addr = data; in sys_write8()
33 static ALWAYS_INLINE uint16_t sys_read16(mem_addr_t addr) in sys_read16() argument
35 return *(volatile uint16_t *)addr; in sys_read16()
38 static ALWAYS_INLINE void sys_write16(uint16_t data, mem_addr_t addr) in sys_write16() argument
40 *(volatile uint16_t *)addr = data; in sys_write16()
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/Zephyr-latest/tests/kernel/mem_protect/stackprot/src/
Dmapped_stack.c4 * SPDX-License-Identifier: Apache-2.0
37 TC_PRINT("Mapped stack %p size %zu\n", mapped_stack_addr, mapped_stack_sz); in mapped_thread()
44 ptr -= CONFIG_MMU_PAGE_SIZE / 2; in mapped_thread()
74 zassert_true(mapped_thread_data.stack_info.mapped.addr != NULL); in create_thread()
76 /* Grab the mapped stack object address and size so we can calculate in create_thread()
79 mapped_stack_addr = (void *)mapped_thread_data.stack_info.mapped.addr; in create_thread()
80 mapped_stack_sz = mapped_thread_data.stack_info.mapped.sz; in create_thread()
/Zephyr-latest/kernel/
Dmmu.c4 * SPDX-License-Identifier: Apache-2.0
17 #include <zephyr/linker/linker-defs.h>
31 * - A page frame is a page-sized physical memory region in RAM. It is a
37 * - A data page is a page-sized region of data. It may exist in a page frame,
86 printk("-"); in page_frame_dump()
160 * +--------------+ <- K_MEM_VIRT_RAM_START
161 * | Undefined VM | <- May contain ancillary regions like x86_64's locore
162 * +--------------+ <- K_MEM_KERNEL_VIRT_START (often == K_MEM_VIRT_RAM_START)
168 * +--------------+ <- K_MEM_VM_FREE_START
173 * |..............| <- mapping_pos (grows downward as more mappings are made)
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/Zephyr-latest/include/zephyr/arch/riscv/
Dsys_io.h4 * SPDX-License-Identifier: Apache-2.0
7 /* Memory mapped registers I/O functions in riscv arch C code */
28 extern uint8_t z_soc_sys_read8(mem_addr_t addr);
29 extern void z_soc_sys_write8(uint8_t data, mem_addr_t addr);
30 extern uint16_t z_soc_sys_read16(mem_addr_t addr);
31 extern void z_soc_sys_write16(uint16_t data, mem_addr_t addr);
32 extern uint32_t z_soc_sys_read32(mem_addr_t addr);
33 extern void z_soc_sys_write32(uint32_t data, mem_addr_t addr);
34 extern uint64_t z_soc_sys_read64(mem_addr_t addr);
35 extern void z_soc_sys_write64(uint64_t data, mem_addr_t addr);
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/Zephyr-latest/include/zephyr/arch/arm/cortex_a_r/
Dsys_io.h5 * SPDX-License-Identifier: Apache-2.0
8 /* "Arch" bit manipulation functions in non-arch-specific C code (uses some
25 /* Memory mapped registers I/O functions */
27 static ALWAYS_INLINE uint8_t sys_read8(mem_addr_t addr) in sys_read8() argument
31 __asm__ volatile("ldrb %0, [%1]" : "=r" (val) : "r" (addr)); in sys_read8()
37 static ALWAYS_INLINE void sys_write8(uint8_t data, mem_addr_t addr) in sys_write8() argument
40 __asm__ volatile("strb %0, [%1]" : : "r" (data), "r" (addr)); in sys_write8()
43 static ALWAYS_INLINE uint16_t sys_read16(mem_addr_t addr) in sys_read16() argument
47 __asm__ volatile("ldrh %0, [%1]" : "=r" (val) : "r" (addr)); in sys_read16()
53 static ALWAYS_INLINE void sys_write16(uint16_t data, mem_addr_t addr) in sys_write16() argument
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/Zephyr-latest/tests/kernel/device/src/
Dmmio.c4 * SPDX-License-Identifier: Apache-2.0
48 * DEVICE_MMIO_GET() is not NULL, indicating that the kernel mapped
52 * - If MMIO addresses are maintained in RAM, check that the ROM struct
54 * - If MMIO addresses are maintained in ROM, check that the DTS info,
78 /* The config info should just contain the addr/size from DTS. in ZTEST()
84 zassert_equal(rom->phys_addr, DT_INST_REG_ADDR(0), "bad phys_addr"); in ZTEST()
85 zassert_equal(rom->size, DT_INST_REG_SIZE(0), "bad size"); in ZTEST()
89 * In this configuration dev_data has nothing mmio-related in it in ZTEST()
91 zassert_equal(rom->addr, DT_INST_REG_ADDR(0), "bad addr"); in ZTEST()
92 zassert_equal(regs, rom->addr, "bad regs"); in ZTEST()
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/Zephyr-latest/include/zephyr/arch/arm64/
Dsys_io.h5 * SPDX-License-Identifier: Apache-2.0
8 /* "Arch" bit manipulation functions in non-arch-specific C code (uses some
25 /* Memory mapped registers I/O functions */
37 static ALWAYS_INLINE uint8_t sys_read8(mem_addr_t addr) in sys_read8() argument
41 __asm__ volatile("ldrb %w0, [%1]" : "=r" (val) : "r" (addr)); in sys_read8()
47 static ALWAYS_INLINE void sys_write8(uint8_t data, mem_addr_t addr) in sys_write8() argument
50 __asm__ volatile("strb %w0, [%1]" : : "r" (data), "r" (addr)); in sys_write8()
53 static ALWAYS_INLINE uint16_t sys_read16(mem_addr_t addr) in sys_read16() argument
57 __asm__ volatile("ldrh %w0, [%1]" : "=r" (val) : "r" (addr)); in sys_read16()
63 static ALWAYS_INLINE void sys_write16(uint16_t data, mem_addr_t addr) in sys_write16() argument
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/Zephyr-latest/samples/subsys/edac/
DREADME.rst1 .. zephyr:code-sample:: edac
3 :relevant-api: edac
19 .. zephyr-app-commands::
20 :zephyr-app: samples/subsys/edac
21 :host-os: unix
39 .. code-block:: console
41 uart:~$ edac -h
42 edac - EDAC information
51 .. code-block:: console
53 uart:~$ edac info -h
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/Zephyr-latest/dts/bindings/dma/
Dbrcm,iproc-pax-dma-v1.yaml2 # SPDX-License-Identifier: Apache-2.0
4 description: Broadcom iProc PAX(PCIE<->AXI) DMA controller version 1
6 include: dma-controller.yaml
8 compatible: brcm,iproc-pax-dma-v1
13 Register space for the memory mapped PAX DMA controller registers,
17 bd-memory:
21 scr-addr-loc:
25 scr-size-loc:
32 pcie-ep:
Dbrcm,iproc-pax-dma-v2.yaml2 # SPDX-License-Identifier: Apache-2.0
4 description: Broadcom iProc PAX(PCIE<->AXI) DMA controller version 2
6 include: dma-controller.yaml
8 compatible: brcm,iproc-pax-dma-v2
13 Register space for the memory mapped PAX DMA controller registers,
17 bd-memory:
21 scr-addr-loc:
25 scr-size-loc:
32 pcie-ep:
/Zephyr-latest/soc/mediatek/mt8xxx/
Dgen_img.py3 # SPDX-License-Identifier: Apache-2.0
31 # Returns the offset of a segment within the sram region, or -1 if it
32 # doesn't appear to be SRAM. SRAM is mapped differently for different
38 def sram_off(addr): argument
40 if addr < 0x40000000 or addr >= 0x50000000:
41 return -1
42 block = addr & ~0xFFFFF
46 off = addr - sram_block
53 def dram_off(addr): argument
54 if (addr >> 28 not in [6, 9]) or (addr & 0x0F000000 != 0):
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/Zephyr-latest/dts/arm/nuvoton/
Dnpcx4m3f.dtsi4 * SPDX-License-Identifier: Apache-2.0
20 compatible = "mmio-sram";
24 soc-id {
25 device-id = <0x25>;
33 compatible ="nuvoton,npcx-fiu-nor";
39 qspi-flags = <NPCX_QSPI_SW_CS0>;
40 mapped-addr = <0x60000000>;
Dnpcx4m8f.dtsi4 * SPDX-License-Identifier: Apache-2.0
20 compatible = "mmio-sram";
24 soc-id {
25 device-id = <0x23>;
33 compatible ="nuvoton,npcx-fiu-nor";
39 qspi-flags = <NPCX_QSPI_SW_CS0>;
40 mapped-addr = <0x60000000>;
Dnpcx9m3f.dtsi4 * SPDX-License-Identifier: Apache-2.0
20 compatible = "mmio-sram";
24 soc-id {
25 device-id = <0x25>;
33 compatible ="nuvoton,npcx-fiu-nor";
39 qspi-flags = <NPCX_QSPI_SW_CS1>;
40 mapped-addr = <0x64000000>;
41 pinctrl-0 = <&int_flash_sl>;
42 pinctrl-names = "default";
Dnpcx9m6f.dtsi4 * SPDX-License-Identifier: Apache-2.0
20 compatible = "mmio-sram";
24 soc-id {
25 device-id = <0x21>;
33 compatible ="nuvoton,npcx-fiu-nor";
39 qspi-flags = <NPCX_QSPI_SW_CS1>;
40 mapped-addr = <0x64000000>;
41 pinctrl-0 = <&int_flash_sl>;
42 pinctrl-names = "default";
Dnpcx9m7f.dtsi4 * SPDX-License-Identifier: Apache-2.0
20 compatible = "mmio-sram";
24 soc-id {
25 device-id = <0x22>;
31 compatible ="nuvoton,npcx-fiu-nor";
37 qspi-flags = <NPCX_QSPI_SW_CS1>;
38 mapped-addr = <0x64000000>;
39 pinctrl-0 = <&int_flash_sl>;
40 pinctrl-names = "default";

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