nvmem/layouts/u-boot-env.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) 2022 - 2023 Rafał Miłecki <rafal@milecki.pl>
10 #include <linux/nvmem-consumer.h>
11 #include <linux/nvmem-provider.h>
15 #include "u-boot-env.h"
40 	if (bytes != 3 * ETH_ALEN - 1)  in u_boot_env_read_post_process_ethaddr()
41 		return -EINVAL;  in u_boot_env_read_post_process_ethaddr()
44 		return -EINVAL;  in u_boot_env_read_post_process_ethaddr()
73 			return -ENOMEM;  in u_boot_env_parse_cells()
74 		info.offset = data_offset + value - data;  in u_boot_env_parse_cells()
76 		info.np = of_get_child_by_name(dev->of_node, info.name);  in u_boot_env_parse_cells()
109 		err = -ENOMEM;  in u_boot_env_parse()
118 		err = -EIO;  in u_boot_env_parse()
141 		dev_err(dev, "Device too small for u-boot-env\n");  in u_boot_env_parse()
142 		err = -EIO;  in u_boot_env_parse()
148 	crc32_data_len = dev_size - crc32_data_offset;  in u_boot_env_parse()
149 	data_len = dev_size - data_offset;  in u_boot_env_parse()
154 		err = -EINVAL;  in u_boot_env_parse()
158 	buf[dev_size - 1] = '\0';  in u_boot_env_parse()
170 	struct device *dev = &layout->dev;  in u_boot_env_add_cells()
175 	return u_boot_env_parse(dev, layout->nvmem, format);  in u_boot_env_add_cells()
180 	layout->add_cells = u_boot_env_add_cells;  in u_boot_env_probe()
191 	{ .compatible = "u-boot,env", .data = (void *)U_BOOT_FORMAT_SINGLE, },
192 	{ .compatible = "u-boot,env-redundant-bool", .data = (void *)U_BOOT_FORMAT_REDUNDANT, },
193 	{ .compatible = "u-boot,env-redundant-count", .data = (void *)U_BOOT_FORMAT_REDUNDANT, },
200 		.name = "u-boot-env-layout",
211 MODULE_DESCRIPTION("NVMEM layout driver for U-Boot environment variables");