1 // SPDX-License-Identifier: GPL-2.0
8  * Copyright (c) 2022-2023 Microchip Corporation. All rights reserved.
21 #include <soc/microchip/mpfs.h>
44  * |------------------------------| 0x0000000
47  * |------------------------------| 0x0000400
51  * |------------------------------| 0x0100400
54  * |------------------------------| 0x1500400
57  * |------------------------------| 0x2900400
59  * | Reserved for multi-image IAP |
61  * |------------------------------| 0x3D00400
64  * |------------------------------| 0x?
102 	struct mpfs_auto_update_priv *priv = fw_uploader->dd_handle;  in mpfs_auto_update_prepare()
107 	 * against the currently programmed image and thus may fail - due to  in mpfs_auto_update_prepare()
109 	 * or if the version is the same as that of the in-use image.  in mpfs_auto_update_prepare()
116 	priv->flash = mpfs_sys_controller_get_flash(priv->sys_controller);  in mpfs_auto_update_prepare()
117 	if (!priv->flash)  in mpfs_auto_update_prepare()
120 	erase_size = round_up(erase_size, (u64)priv->flash->erasesize);  in mpfs_auto_update_prepare()
131 	priv->size_per_bitstream = priv->flash->size - SZ_1K - SZ_1M;  in mpfs_auto_update_prepare()
132 	priv->size_per_bitstream = round_down(priv->size_per_bitstream / 3, erase_size);  in mpfs_auto_update_prepare()
133 	if (priv->size_per_bitstream > 20 * SZ_1M)  in mpfs_auto_update_prepare()
134 		priv->size_per_bitstream = 20 * SZ_1M;  in mpfs_auto_update_prepare()
136 	if (priv->size_per_bitstream < size) {  in mpfs_auto_update_prepare()
137 		dev_err(priv->dev,  in mpfs_auto_update_prepare()
142 	priv->cancel_request = false;  in mpfs_auto_update_prepare()
149 	struct mpfs_auto_update_priv *priv = fw_uploader->dd_handle;  in mpfs_auto_update_cancel()
151 	priv->cancel_request = true;  in mpfs_auto_update_cancel()
161 	struct mpfs_auto_update_priv *priv = fw_uploader->dd_handle;  in mpfs_auto_update_verify_image()
171 		return -ENOMEM;  in mpfs_auto_update_verify_image()
174 	 * The system controller can verify that an image in the flash is valid.  in mpfs_auto_update_verify_image()
181 	response->resp_msg = response_msg;  in mpfs_auto_update_verify_image()
182 	response->resp_size = AUTO_UPDATE_AUTHENTICATE_RESP_SIZE;  in mpfs_auto_update_verify_image()
183 	message->cmd_opcode = AUTO_UPDATE_AUTHENTICATE_CMD_OPCODE;  in mpfs_auto_update_verify_image()
184 	message->cmd_data_size = AUTO_UPDATE_AUTHENTICATE_CMD_DATA_SIZE;  in mpfs_auto_update_verify_image()
185 	message->response = response;  in mpfs_auto_update_verify_image()
186 	message->cmd_data = AUTO_UPDATE_AUTHENTICATE_CMD_DATA;  in mpfs_auto_update_verify_image()
187 	message->mbox_offset = AUTO_UPDATE_UPGRADE_INDEX;  in mpfs_auto_update_verify_image()
188 	message->resp_offset = AUTO_UPDATE_DEFAULT_RESP_OFFSET;  in mpfs_auto_update_verify_image()
190 	dev_info(priv->dev, "Running verification of Upgrade Image\n");  in mpfs_auto_update_verify_image()
191 	ret = mpfs_blocking_transaction(priv->sys_controller, message);  in mpfs_auto_update_verify_image()
192 	if (ret | response->resp_status) {  in mpfs_auto_update_verify_image()
193 		dev_warn(priv->dev, "Verification of Upgrade Image failed!\n");  in mpfs_auto_update_verify_image()
194 		return ret ? ret : -EBADMSG;  in mpfs_auto_update_verify_image()
197 	dev_info(priv->dev, "Verification of Upgrade Image passed!\n");  in mpfs_auto_update_verify_image()
206 	size_t erase_size = round_up(AUTO_UPDATE_DIRECTORY_SIZE, (u64)priv->flash->erasesize);  in mpfs_auto_update_set_image_address()
212 		return -ENOMEM;  in mpfs_auto_update_set_image_address()
220 	 * this is spi-nor, we have to read the first eraseblock, erase that  in mpfs_auto_update_set_image_address()
225 	ret = mtd_read(priv->flash, AUTO_UPDATE_DIRECTORY_BASE, erase_size, &bytes_read,  in mpfs_auto_update_set_image_address()
231 		return -EIO;  in mpfs_auto_update_set_image_address()
237 	ret = mtd_erase(priv->flash, &erase);  in mpfs_auto_update_set_image_address()
250 	dev_info(priv->dev, "Writing the image address (0x%x) to the flash directory (0x%llx)\n",  in mpfs_auto_update_set_image_address()
253 	ret = mtd_write(priv->flash, 0x0, erase_size, &bytes_written, (u_char *)buffer);  in mpfs_auto_update_set_image_address()
258 		return -EIO;  in mpfs_auto_update_set_image_address()
266 	struct mpfs_auto_update_priv *priv = fw_uploader->dd_handle;  in mpfs_auto_update_write_bitstream()
275 	erase_size = round_up(erase_size, (u64)priv->flash->erasesize);  in mpfs_auto_update_write_bitstream()
281 				AUTO_UPDATE_UPGRADE_INDEX * priv->size_per_bitstream;  in mpfs_auto_update_write_bitstream()
290 			dev_err(priv->dev, "failed to set image address in the SPI directory: %d\n", ret);  in mpfs_auto_update_write_bitstream()
295 			dev_err(priv->dev, "bitstream info exceeds permitted size\n");  in mpfs_auto_update_write_bitstream()
296 			return -ENOSPC;  in mpfs_auto_update_write_bitstream()
301 	 * Now the .spi image itself can be written to the flash. Preservation  in mpfs_auto_update_write_bitstream()
305 	erase.len = round_up(size, (size_t)priv->flash->erasesize);  in mpfs_auto_update_write_bitstream()
308 	dev_info(priv->dev, "Erasing the flash at address (0x%x)\n", image_address);  in mpfs_auto_update_write_bitstream()
309 	ret = mtd_erase(priv->flash, &erase);  in mpfs_auto_update_write_bitstream()
315 	 * will do all of that itself - including verifying that the bitstream  in mpfs_auto_update_write_bitstream()
318 	dev_info(priv->dev, "Writing the image to the flash at address (0x%x)\n", image_address);  in mpfs_auto_update_write_bitstream()
319 	ret = mtd_write(priv->flash, (loff_t)image_address, size, &bytes_written, data);  in mpfs_auto_update_write_bitstream()
324 		return -EIO;  in mpfs_auto_update_write_bitstream()
327 	dev_info(priv->dev, "Wrote 0x%zx bytes to the flash\n", bytes_written);  in mpfs_auto_update_write_bitstream()
335 	struct mpfs_auto_update_priv *priv = fw_uploader->dd_handle;  in mpfs_auto_update_write()
342 	if (priv->cancel_request)  in mpfs_auto_update_write()
373 		return -ENOMEM;  in mpfs_auto_update_available()
380 	response->resp_msg = response_msg;  in mpfs_auto_update_available()
381 	response->resp_size = AUTO_UPDATE_FEATURE_RESP_SIZE;  in mpfs_auto_update_available()
382 	message->cmd_opcode = AUTO_UPDATE_FEATURE_CMD_OPCODE;  in mpfs_auto_update_available()
383 	message->cmd_data_size = AUTO_UPDATE_FEATURE_CMD_DATA_SIZE;  in mpfs_auto_update_available()
384 	message->response = response;  in mpfs_auto_update_available()
385 	message->cmd_data = AUTO_UPDATE_FEATURE_CMD_DATA;  in mpfs_auto_update_available()
386 	message->mbox_offset = AUTO_UPDATE_DEFAULT_MBOX_OFFSET;  in mpfs_auto_update_available()
387 	message->resp_offset = AUTO_UPDATE_DEFAULT_RESP_OFFSET;  in mpfs_auto_update_available()
389 	ret = mpfs_blocking_transaction(priv->sys_controller, message);  in mpfs_auto_update_available()
401 	if (response->resp_status)  in mpfs_auto_update_available()
402 		return -EIO;  in mpfs_auto_update_available()
409 		return -EPERM;  in mpfs_auto_update_available()
416 	struct device *dev = &pdev->dev;  in mpfs_auto_update_probe()
423 		return -ENOMEM;  in mpfs_auto_update_probe()
425 	priv->sys_controller = mpfs_sys_controller_get(dev);  in mpfs_auto_update_probe()
426 	if (IS_ERR(priv->sys_controller))  in mpfs_auto_update_probe()
427 		return dev_err_probe(dev, PTR_ERR(priv->sys_controller),  in mpfs_auto_update_probe()
430 	priv->dev = dev;  in mpfs_auto_update_probe()
436 				     "The current bitstream does not support auto-update\n");  in mpfs_auto_update_probe()
438 	fw_uploader = firmware_upload_register(THIS_MODULE, dev, "mpfs-auto-update",  in mpfs_auto_update_probe()
444 	priv->fw_uploader = fw_uploader;  in mpfs_auto_update_probe()
453 	firmware_upload_unregister(priv->fw_uploader);  in mpfs_auto_update_remove()
458 		.name = "mpfs-auto-update",