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3e79e1b4ad
Since commit 8b41fc4454 ("kbuild: create modules.builtin without
Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations
are used to identify modules. As a consequence, uses of the macro
in non-modules will cause modprobe to misidentify their containing
object file as a module when it is not (false positives), and modprobe
might succeed rather than failing with a suitable error message.
So remove it in the files in this commit, none of which can be built as
modules.
Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Suggested-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: linux-modules@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230224150811.80316-19-nick.alcock@oracle.com
172 lines
4.3 KiB
C
172 lines
4.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* BCM63XX CFE image tag parser
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*
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* Copyright © 2006-2008 Florian Fainelli <florian@openwrt.org>
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* Mike Albon <malbon@openwrt.org>
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* Copyright © 2009-2010 Daniel Dickinson <openwrt@cshore.neomailbox.net>
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* Copyright © 2011-2013 Jonas Gorski <jonas.gorski@gmail.com>
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/bcm963xx_nvram.h>
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#include <linux/bcm963xx_tag.h>
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#include <linux/crc32.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/sizes.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/of.h>
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#ifdef CONFIG_MIPS
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#include <asm/bootinfo.h>
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#include <asm/fw/cfe/cfe_api.h>
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#endif /* CONFIG_MIPS */
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#define BCM963XX_CFE_BLOCK_SIZE SZ_64K /* always at least 64KiB */
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#define BCM963XX_CFE_MAGIC_OFFSET 0x4e0
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#define BCM963XX_CFE_VERSION_OFFSET 0x570
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#define BCM963XX_NVRAM_OFFSET 0x580
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/* Ensure strings read from flash structs are null terminated */
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#define STR_NULL_TERMINATE(x) \
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do { char *_str = (x); _str[sizeof(x) - 1] = 0; } while (0)
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static inline int bcm63xx_detect_cfe(void)
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{
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int ret = 0;
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#ifdef CONFIG_MIPS
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ret = (fw_arg3 == CFE_EPTSEAL);
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#endif /* CONFIG_MIPS */
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return ret;
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}
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static int bcm63xx_read_nvram(struct mtd_info *master,
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struct bcm963xx_nvram *nvram)
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{
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u32 actual_crc, expected_crc;
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size_t retlen;
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int ret;
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/* extract nvram data */
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ret = mtd_read(master, BCM963XX_NVRAM_OFFSET, BCM963XX_NVRAM_V5_SIZE,
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&retlen, (void *)nvram);
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if (ret)
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return ret;
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ret = bcm963xx_nvram_checksum(nvram, &expected_crc, &actual_crc);
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if (ret)
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pr_warn("nvram checksum failed, contents may be invalid (expected %08x, got %08x)\n",
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expected_crc, actual_crc);
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if (!nvram->psi_size)
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nvram->psi_size = BCM963XX_DEFAULT_PSI_SIZE;
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return 0;
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}
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static const char * const bcm63xx_cfe_part_types[] = {
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"bcm963xx-imagetag",
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NULL,
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};
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static int bcm63xx_parse_cfe_nor_partitions(struct mtd_info *master,
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const struct mtd_partition **pparts, struct bcm963xx_nvram *nvram)
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{
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struct mtd_partition *parts;
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int nrparts = 3, curpart = 0;
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unsigned int cfelen, nvramlen;
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unsigned int cfe_erasesize;
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int i;
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cfe_erasesize = max_t(uint32_t, master->erasesize,
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BCM963XX_CFE_BLOCK_SIZE);
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cfelen = cfe_erasesize;
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nvramlen = nvram->psi_size * SZ_1K;
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nvramlen = roundup(nvramlen, cfe_erasesize);
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parts = kzalloc(sizeof(*parts) * nrparts + 10 * nrparts, GFP_KERNEL);
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if (!parts)
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return -ENOMEM;
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/* Start building partition list */
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parts[curpart].name = "CFE";
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parts[curpart].offset = 0;
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parts[curpart].size = cfelen;
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curpart++;
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parts[curpart].name = "nvram";
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parts[curpart].offset = master->size - nvramlen;
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parts[curpart].size = nvramlen;
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curpart++;
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/* Global partition "linux" to make easy firmware upgrade */
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parts[curpart].name = "linux";
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parts[curpart].offset = cfelen;
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parts[curpart].size = master->size - cfelen - nvramlen;
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parts[curpart].types = bcm63xx_cfe_part_types;
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for (i = 0; i < nrparts; i++)
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pr_info("Partition %d is %s offset %llx and length %llx\n", i,
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parts[i].name, parts[i].offset, parts[i].size);
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*pparts = parts;
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return nrparts;
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}
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static int bcm63xx_parse_cfe_partitions(struct mtd_info *master,
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const struct mtd_partition **pparts,
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struct mtd_part_parser_data *data)
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{
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struct bcm963xx_nvram *nvram = NULL;
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int ret;
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if (!bcm63xx_detect_cfe())
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return -EINVAL;
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nvram = vzalloc(sizeof(*nvram));
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if (!nvram)
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return -ENOMEM;
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ret = bcm63xx_read_nvram(master, nvram);
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if (ret)
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goto out;
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if (!mtd_type_is_nand(master))
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ret = bcm63xx_parse_cfe_nor_partitions(master, pparts, nvram);
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else
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ret = -EINVAL;
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out:
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vfree(nvram);
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return ret;
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};
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static const struct of_device_id parse_bcm63xx_cfe_match_table[] = {
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{ .compatible = "brcm,bcm963xx-cfe-nor-partitions" },
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{},
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};
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MODULE_DEVICE_TABLE(of, parse_bcm63xx_cfe_match_table);
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static struct mtd_part_parser bcm63xx_cfe_parser = {
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.parse_fn = bcm63xx_parse_cfe_partitions,
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.name = "bcm63xxpart",
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.of_match_table = parse_bcm63xx_cfe_match_table,
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};
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module_mtd_part_parser(bcm63xx_cfe_parser);
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MODULE_AUTHOR("Daniel Dickinson <openwrt@cshore.neomailbox.net>");
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MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
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MODULE_AUTHOR("Mike Albon <malbon@openwrt.org>");
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MODULE_AUTHOR("Jonas Gorski <jonas.gorski@gmail.com");
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MODULE_DESCRIPTION("MTD partitioning for BCM63XX CFE bootloaders");
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