silabs/wfx/fwio.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Firmware loading.
5  * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
6  * Copyright (c) 2010, ST-Ericsson
8 #include <linux/firmware.h>
67 	[ERR_AES_CTRL_KEY]     = "AES control key not initialized",
68 	[ERR_ECC_PUB_KEY]      = "ECC public key not initialized",
69 	[ERR_MAC_KEY]          = "MAC key not initialized",
78  * NOTE: it may also be possible to use 'pages' from struct firmware and avoid bounce buffer
88 			return -ENOMEM;  in wfx_sram_write_dma_safe()
99 			const struct firmware **fw, int *file_offset)  in get_firmware()
107 		 wdev->pdata.file_fw, keyset_chip);  in get_firmware()
108 	ret = firmware_request_nowarn(fw, filename, wdev->dev);  in get_firmware()
110 		dev_info(wdev->dev, "can't load %s, falling back to %s.sec\n",  in get_firmware()
111 			 filename, wdev->pdata.file_fw);  in get_firmware()
112 		snprintf(filename, sizeof(filename), "%s.sec", wdev->pdata.file_fw);  in get_firmware()
113 		ret = request_firmware(fw, filename, wdev->dev);  in get_firmware()
115 			dev_err(wdev->dev, "can't load %s\n", filename);  in get_firmware()
121 	data = (*fw)->data;  in get_firmware()
123 		/* Legacy firmware format */  in get_firmware()
130 			dev_err(wdev->dev, "%s corrupted\n", filename);  in get_firmware()
133 			return -EINVAL;  in get_firmware()
137 		dev_err(wdev->dev, "firmware keyset is incompatible with chip (file: 0x%02X, chip: 0x%02X)\n",  in get_firmware()
141 		return -ENODEV;  in get_firmware()
143 	wdev->keyset = keyset_file;  in get_firmware()
157 			return -EIO;  in wait_ncp_status()
162 			return -ETIMEDOUT;  in wait_ncp_status()
165 		dev_dbg(wdev->dev, "chip answer after %lldus\n", ktime_us_delta(now, start));  in wait_ncp_status()
167 		dev_dbg(wdev->dev, "chip answer immediately\n");  in wait_ncp_status()
178 		dev_err(wdev->dev, "firmware size is not aligned. Buffer overrun will occur\n");  in upload_firmware()
179 		return -EIO;  in upload_firmware()
186 			if (offs + DNLD_BLOCK_SIZE - bytes_done < DNLD_FIFO_SIZE)  in upload_firmware()
189 				return -ETIMEDOUT;  in upload_firmware()
195 			dev_dbg(wdev->dev, "answer after %lldus\n", ktime_us_delta(now, start));  in upload_firmware()
220 		dev_info(wdev->dev, "secure boot: %s\n", fwio_errors[reg]);  in print_boot_status()
222 		dev_info(wdev->dev, "secure boot: Error %#02x\n", reg);  in print_boot_status()
227 	const struct firmware *fw = NULL;  in load_firmware_secure()
237 		return -ENOMEM;  in load_firmware_secure()
246 	dev_dbg(wdev->dev, "bootloader: \"%s\"\n", buf);  in load_firmware_secure()
261 	wfx_sram_write_dma_safe(wdev, WFX_DCA_FW_SIGNATURE, fw->data + fw_offset,  in load_firmware_secure()
263 	wfx_sram_write_dma_safe(wdev, WFX_DCA_FW_HASH, fw->data + fw_offset + FW_SIGNATURE_SIZE,  in load_firmware_secure()
265 	wfx_sram_reg_write(wdev, WFX_DCA_IMAGE_SIZE, fw->size - header_size);  in load_firmware_secure()
272 	ret = upload_firmware(wdev, fw->data + header_size, fw->size - header_size);  in load_firmware_secure()
275 	dev_dbg(wdev->dev, "firmware load after %lldus\n",  in load_firmware_secure()
313 		dev_dbg(wdev->dev, "  index %02x: %08x\n", gpr_init[i].index, gpr_init[i].value);  in init_gpr()
327 	if (wdev->pdata.use_rising_clk)  in wfx_init_device()
331 …dev_err(wdev->dev, "bus returned an error during first write access. Host configuration error?\n");  in wfx_init_device()
332 		return -EIO;  in wfx_init_device()
337 		dev_err(wdev->dev, "bus returned an error during first read access. Bus configuration error?\n");  in wfx_init_device()
338 		return -EIO;  in wfx_init_device()
341 		dev_err(wdev->dev, "chip mute. Bus configuration error or chip wasn't reset?\n");  in wfx_init_device()
342 		return -EIO;  in wfx_init_device()
344 	dev_dbg(wdev->dev, "initial config register value: %08x\n", reg);  in wfx_init_device()
348 		dev_err(wdev->dev, "bad hardware revision number: %d\n", hw_revision);  in wfx_init_device()
349 		return -ENODEV;  in wfx_init_device()
353 		dev_notice(wdev->dev, "development hardware detected\n");  in wfx_init_device()
363 		return -EIO;  in wfx_init_device()
371 			dev_err(wdev->dev, "chip didn't wake up. Chip wasn't reset?\n");  in wfx_init_device()
372 			return -ETIMEDOUT;  in wfx_init_device()
375 	dev_dbg(wdev->dev, "chip wake up after %lldus\n", ktime_us_delta(now, start));  in wfx_init_device()