diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/407-v5.13-0002-mtd-parsers-ofpart-support-Linksys-Northstar-partiti.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/407-v5.13-0002-mtd-parsers-ofpart-support-Linksys-Northstar-partiti.patch | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.10/407-v5.13-0002-mtd-parsers-ofpart-support-Linksys-Northstar-partiti.patch b/target/linux/generic/backport-5.10/407-v5.13-0002-mtd-parsers-ofpart-support-Linksys-Northstar-partiti.patch new file mode 100644 index 0000000000..f317889785 --- /dev/null +++ b/target/linux/generic/backport-5.10/407-v5.13-0002-mtd-parsers-ofpart-support-Linksys-Northstar-partiti.patch @@ -0,0 +1,156 @@ +From 7134a2d026d942210b4d26d6059c9d979ca7866e Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Fri, 12 Mar 2021 14:49:19 +0100 +Subject: [PATCH] mtd: parsers: ofpart: support Linksys Northstar partitions +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This allows extending ofpart parser with support for Linksys Northstar +devices. That support uses recently added quirks mechanism. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> +Link: https://lore.kernel.org/linux-mtd/20210312134919.7767-2-zajec5@gmail.com +--- + drivers/mtd/parsers/Kconfig | 10 +++++ + drivers/mtd/parsers/Makefile | 1 + + drivers/mtd/parsers/ofpart_core.c | 6 +++ + drivers/mtd/parsers/ofpart_linksys_ns.c | 50 +++++++++++++++++++++++++ + drivers/mtd/parsers/ofpart_linksys_ns.h | 18 +++++++++ + 5 files changed, 85 insertions(+) + create mode 100644 drivers/mtd/parsers/ofpart_linksys_ns.c + create mode 100644 drivers/mtd/parsers/ofpart_linksys_ns.h + +--- a/drivers/mtd/parsers/Kconfig ++++ b/drivers/mtd/parsers/Kconfig +@@ -76,6 +76,16 @@ config MTD_OF_PARTS_BCM4908 + that can have multiple "firmware" partitions. It takes care of + finding currently used one and backup ones. + ++config MTD_OF_PARTS_LINKSYS_NS ++ bool "Linksys Northstar partitioning support" ++ depends on MTD_OF_PARTS && (ARCH_BCM_5301X || ARCH_BCM4908 || COMPILE_TEST) ++ default ARCH_BCM_5301X ++ help ++ This provides partitions parser for Linksys devices based on Broadcom ++ Northstar architecture. Linksys commonly uses fixed flash layout with ++ two "firmware" partitions. Currently used firmware has to be detected ++ using CFE environment variable. ++ + config MTD_PARSER_IMAGETAG + tristate "Parser for BCM963XX Image Tag format partitions" + depends on BCM63XX || BMIPS_GENERIC || COMPILE_TEST +--- a/drivers/mtd/parsers/Makefile ++++ b/drivers/mtd/parsers/Makefile +@@ -6,6 +6,7 @@ obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdl + obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o + ofpart-y += ofpart_core.o + ofpart-$(CONFIG_MTD_OF_PARTS_BCM4908) += ofpart_bcm4908.o ++ofpart-$(CONFIG_MTD_OF_PARTS_LINKSYS_NS)+= ofpart_linksys_ns.o + obj-$(CONFIG_MTD_PARSER_IMAGETAG) += parser_imagetag.o + obj-$(CONFIG_MTD_AFS_PARTS) += afs.o + obj-$(CONFIG_MTD_PARSER_TRX) += parser_trx.o +--- a/drivers/mtd/parsers/ofpart_core.c ++++ b/drivers/mtd/parsers/ofpart_core.c +@@ -17,6 +17,7 @@ + #include <linux/mtd/partitions.h> + + #include "ofpart_bcm4908.h" ++#include "ofpart_linksys_ns.h" + + struct fixed_partitions_quirks { + int (*post_parse)(struct mtd_info *mtd, struct mtd_partition *parts, int nr_parts); +@@ -26,6 +27,10 @@ static struct fixed_partitions_quirks bc + .post_parse = bcm4908_partitions_post_parse, + }; + ++static struct fixed_partitions_quirks linksys_ns_partitions_quirks = { ++ .post_parse = linksys_ns_partitions_post_parse, ++}; ++ + static const struct of_device_id parse_ofpart_match_table[]; + + static bool node_has_compatible(struct device_node *pp) +@@ -167,6 +172,7 @@ static const struct of_device_id parse_o + { .compatible = "fixed-partitions" }, + /* Customized */ + { .compatible = "brcm,bcm4908-partitions", .data = &bcm4908_partitions_quirks, }, ++ { .compatible = "linksys,ns-partitions", .data = &linksys_ns_partitions_quirks, }, + {}, + }; + MODULE_DEVICE_TABLE(of, parse_ofpart_match_table); +--- /dev/null ++++ b/drivers/mtd/parsers/ofpart_linksys_ns.c +@@ -0,0 +1,50 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/* ++ * Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> ++ */ ++ ++#include <linux/bcm47xx_nvram.h> ++#include <linux/mtd/mtd.h> ++#include <linux/mtd/partitions.h> ++ ++#include "ofpart_linksys_ns.h" ++ ++#define NVRAM_BOOT_PART "bootpartition" ++ ++static int ofpart_linksys_ns_bootpartition(void) ++{ ++ char buf[4]; ++ int bootpartition; ++ ++ /* Check CFE environment variable */ ++ if (bcm47xx_nvram_getenv(NVRAM_BOOT_PART, buf, sizeof(buf)) > 0) { ++ if (!kstrtoint(buf, 0, &bootpartition)) ++ return bootpartition; ++ pr_warn("Failed to parse %s value \"%s\"\n", NVRAM_BOOT_PART, ++ buf); ++ } else { ++ pr_warn("Failed to get NVRAM \"%s\"\n", NVRAM_BOOT_PART); ++ } ++ ++ return 0; ++} ++ ++int linksys_ns_partitions_post_parse(struct mtd_info *mtd, ++ struct mtd_partition *parts, ++ int nr_parts) ++{ ++ int bootpartition = ofpart_linksys_ns_bootpartition(); ++ int trx_idx = 0; ++ int i; ++ ++ for (i = 0; i < nr_parts; i++) { ++ if (of_device_is_compatible(parts[i].of_node, "linksys,ns-firmware")) { ++ if (trx_idx++ == bootpartition) ++ parts[i].name = "firmware"; ++ else ++ parts[i].name = "backup"; ++ } ++ } ++ ++ return 0; ++} +--- /dev/null ++++ b/drivers/mtd/parsers/ofpart_linksys_ns.h +@@ -0,0 +1,18 @@ ++/* SPDX-License-Identifier: GPL-2.0 */ ++#ifndef __OFPART_LINKSYS_NS_H ++#define __OFPART_LINKSYS_NS_H ++ ++#ifdef CONFIG_MTD_OF_PARTS_LINKSYS_NS ++int linksys_ns_partitions_post_parse(struct mtd_info *mtd, ++ struct mtd_partition *parts, ++ int nr_parts); ++#else ++static inline int linksys_ns_partitions_post_parse(struct mtd_info *mtd, ++ struct mtd_partition *parts, ++ int nr_parts) ++{ ++ return -EOPNOTSUPP; ++} ++#endif ++ ++#endif |