51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl>
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*/
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#include <linux/bcm47xx_nvram.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include "ofpart_linksys_ns.h"
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#define NVRAM_BOOT_PART "bootpartition"
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static int ofpart_linksys_ns_bootpartition(void)
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{
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char buf[4];
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int bootpartition;
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/* Check CFE environment variable */
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if (bcm47xx_nvram_getenv(NVRAM_BOOT_PART, buf, sizeof(buf)) > 0) {
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if (!kstrtoint(buf, 0, &bootpartition))
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return bootpartition;
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pr_warn("Failed to parse %s value \"%s\"\n", NVRAM_BOOT_PART,
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buf);
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} else {
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pr_warn("Failed to get NVRAM \"%s\"\n", NVRAM_BOOT_PART);
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}
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return 0;
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}
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int linksys_ns_partitions_post_parse(struct mtd_info *mtd,
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struct mtd_partition *parts,
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int nr_parts)
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{
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int bootpartition = ofpart_linksys_ns_bootpartition();
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int trx_idx = 0;
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int i;
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for (i = 0; i < nr_parts; i++) {
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if (of_device_is_compatible(parts[i].of_node, "linksys,ns-firmware")) {
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if (trx_idx++ == bootpartition)
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parts[i].name = "firmware";
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else
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parts[i].name = "backup";
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}
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}
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return 0;
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}
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