1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Texas Instruments Incorporated - http://www.ti.com/
11 * Note: The platform data support is not meant for use with newer
12 * platforms. This is meant only for legacy devices. This mode of
13 * initialization *will* be eventually removed once all necessary
14 * platforms have moved to dm/fdt.
16 #include <dm/platdata.h> /* For platform data support - non dt world */
19 * enum rproc_mem_type - What type of memory model does the rproc use
20 * @RPROC_INTERNAL_MEMORY_MAPPED: Remote processor uses own memory and is memory
21 * mapped to the host processor over an address range.
23 * Please note that this is an enumeration of memory model of different types
24 * of remote processors. Few of the remote processors do have own internal
25 * memories, while others use external memory for instruction and data.
28 RPROC_INTERNAL_MEMORY_MAPPED = 0,
32 * struct dm_rproc_uclass_pdata - platform data for a CPU
33 * @name: Platform-specific way of naming the Remote proc
34 * @mem_type: one of 'enum rproc_mem_type'
35 * @driver_plat_data: driver specific platform data that may be needed.
37 * This can be accessed with dev_get_uclass_platdata() for any UCLASS_REMOTEPROC
41 struct dm_rproc_uclass_pdata {
43 enum rproc_mem_type mem_type;
44 void *driver_plat_data;
48 * struct dm_rproc_ops - Driver model remote proc operations.
50 * This defines the operations provided by remote proc driver.
54 * init() - Initialize the remoteproc device (optional)
56 * This is called after the probe is completed allowing the remote
57 * processor drivers to split up the initializations between probe and
60 * @dev: Remote proc device
61 * @return 0 if all ok, else appropriate error value.
63 int (*init)(struct udevice *dev);
66 * load() - Load the remoteproc device using data provided (mandatory)
68 * Load the remoteproc device with an image, do not start the device.
70 * @dev: Remote proc device
71 * @addr: Address of the image to be loaded
72 * @size: Size of the image to be loaded
73 * @return 0 if all ok, else appropriate error value.
75 int (*load)(struct udevice *dev, ulong addr, ulong size);
78 * start() - Start the remoteproc device (mandatory)
80 * @dev: Remote proc device
81 * @return 0 if all ok, else appropriate error value.
83 int (*start)(struct udevice *dev);
86 * stop() - Stop the remoteproc device (optional)
88 * @dev: Remote proc device
89 * @return 0 if all ok, else appropriate error value.
91 int (*stop)(struct udevice *dev);
94 * reset() - Reset the remoteproc device (optional)
96 * @dev: Remote proc device
97 * @return 0 if all ok, else appropriate error value.
99 int (*reset)(struct udevice *dev);
102 * is_running() - Check if the remote processor is running (optional)
104 * @dev: Remote proc device
105 * @return 0 if running, 1 if not running, -ve on error.
107 int (*is_running)(struct udevice *dev);
110 * ping() - Ping the remote device for basic communication (optional)
112 * @dev: Remote proc device
113 * @return 0 on success, 1 if not responding, -ve on other errors.
115 int (*ping)(struct udevice *dev);
118 * device_to_virt() - Return translated virtual address (optional)
120 * Translate a device address (remote processor view) to virtual
121 * address (main processor view).
123 * @dev: Remote proc device
124 * @da: Device address
125 * @return virtual address.
127 void * (*device_to_virt)(struct udevice *dev, ulong da);
131 #define rproc_get_ops(dev) ((struct dm_rproc_ops *)(dev)->driver->ops)
133 #if CONFIG_IS_ENABLED(REMOTEPROC)
135 * rproc_init() - Initialize all bound remote proc devices
136 * @return 0 if all ok, else appropriate error value.
138 int rproc_init(void);
141 * rproc_dev_init() - Initialize a remote proc device based on id
142 * @id: id of the remote processor
143 * @return 0 if all ok, else appropriate error value.
145 int rproc_dev_init(int id);
148 * rproc_is_initialized() - check to see if remoteproc devices are initialized
149 * @return true if all devices are initialized, false otherwise.
151 bool rproc_is_initialized(void);
154 * rproc_load() - load binary or elf to a remote processor
155 * @id: id of the remote processor
156 * @addr: address in memory where the image is located
157 * @size: size of the image
158 * @return 0 if all ok, else appropriate error value.
160 int rproc_load(int id, ulong addr, ulong size);
163 * rproc_start() - Start a remote processor
164 * @id: id of the remote processor
165 * @return 0 if all ok, else appropriate error value.
167 int rproc_start(int id);
170 * rproc_stop() - Stop a remote processor
171 * @id: id of the remote processor
172 * @return 0 if all ok, else appropriate error value.
174 int rproc_stop(int id);
177 * rproc_reset() - reset a remote processor
178 * @id: id of the remote processor
179 * @return 0 if all ok, else appropriate error value.
181 int rproc_reset(int id);
184 * rproc_ping() - ping a remote processor to check if it can communicate
185 * @id: id of the remote processor
186 * @return 0 if all ok, else appropriate error value.
188 * NOTE: this might need communication path available, which is not implemented
189 * as part of remoteproc framework - hook on to appropriate bus architecture to
192 int rproc_ping(int id);
195 * rproc_is_running() - check to see if remote processor is running
196 * @id: id of the remote processor
197 * @return 0 if running, 1 if not running, -ve on error.
199 * NOTE: this may not involve actual communication capability of the remote
200 * processor, but just ensures that it is out of reset and executing code.
202 int rproc_is_running(int id);
205 * rproc_elf32_sanity_check() - Verify if an image is a valid ELF32 one
207 * Check if a valid ELF32 image exists at the given memory location. Verify
208 * basic ELF32 format requirements like magic number and sections size.
210 * @addr: address of the image to verify
211 * @size: size of the image
212 * @return 0 if the image looks good, else appropriate error value.
214 int rproc_elf32_sanity_check(ulong addr, ulong size);
217 * rproc_elf32_load_image() - load an ELF32 image
218 * @dev: device loading the ELF32 image
219 * @addr: valid ELF32 image address
220 * @return 0 if the image is successfully loaded, else appropriate error value.
222 int rproc_elf32_load_image(struct udevice *dev, unsigned long addr);
224 static inline int rproc_init(void) { return -ENOSYS; }
225 static inline int rproc_dev_init(int id) { return -ENOSYS; }
226 static inline bool rproc_is_initialized(void) { return false; }
227 static inline int rproc_load(int id, ulong addr, ulong size) { return -ENOSYS; }
228 static inline int rproc_start(int id) { return -ENOSYS; }
229 static inline int rproc_stop(int id) { return -ENOSYS; }
230 static inline int rproc_reset(int id) { return -ENOSYS; }
231 static inline int rproc_ping(int id) { return -ENOSYS; }
232 static inline int rproc_is_running(int id) { return -ENOSYS; }
233 static inline int rproc_elf32_sanity_check(ulong addr,
234 ulong size) { return -ENOSYS; }
235 static inline int rproc_elf32_load_image(struct udevice *dev,
236 unsigned long addr) { return -ENOSYS; }
239 #endif /* _RPROC_H_ */