diff options
Diffstat (limited to 'target/linux')
6 files changed, 653 insertions, 236 deletions
diff --git a/target/linux/bcm4908/config-5.4 b/target/linux/bcm4908/config-5.4 index a3cca74c76..47529fc958 100644 --- a/target/linux/bcm4908/config-5.4 +++ b/target/linux/bcm4908/config-5.4 @@ -138,6 +138,7 @@ CONFIG_MODULES_USE_ELF_RELA=y CONFIG_MTD_NAND_BRCMNAND=y CONFIG_MTD_NAND_CORE=y CONFIG_MTD_NAND_ECC_SW_HAMMING=y +CONFIG_MTD_OF_PARTS_BCM4908=y CONFIG_MTD_RAW_NAND=y CONFIG_MTD_SPLIT_CFE_BOOTFS=y # CONFIG_MTD_SPLIT_SQUASHFS_ROOT is not set diff --git a/target/linux/bcm4908/patches-5.4/400-mtd-parsers-ofpart-support-BCM4908-fixed-partitions.patch b/target/linux/bcm4908/patches-5.4/400-mtd-parsers-ofpart-support-BCM4908-fixed-partitions.patch new file mode 100644 index 0000000000..ace0c77c09 --- /dev/null +++ b/target/linux/bcm4908/patches-5.4/400-mtd-parsers-ofpart-support-BCM4908-fixed-partitions.patch @@ -0,0 +1,650 @@ +From 3924b0384a0cd20245e2ffb55c45c2ace737a061 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Thu, 11 Feb 2021 23:04:27 +0100 +Subject: [PATCH] mtd: parsers: ofpart: support BCM4908 fixed partitions +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Some devices use fixed partitioning with some partitions requiring some +extra logic. E.g. BCM4908 may have multiple firmware partitions but +detecting currently used one requires checking bootloader parameters. + +To support such cases without duplicating a lot of code (without copying +most of the ofpart.c code) support for post-parsing callback was added. + +BCM4908 support in ofpart can be enabled using config option and results +in compiling & executing a specific callback. It simply reads offset of +currently used firmware partition from the DT. Bootloader specifies it +using the "brcm_blparms" property. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +--- + drivers/mtd/parsers/Kconfig | 9 +++ + drivers/mtd/parsers/Makefile | 2 + + drivers/mtd/parsers/ofpart_bcm4908.c | 66 +++++++++++++++++++ + drivers/mtd/parsers/ofpart_bcm4908.h | 15 +++++ + .../mtd/parsers/{ofpart.c => ofpart_core.c} | 28 +++++++- + 5 files changed, 118 insertions(+), 2 deletions(-) + create mode 100644 drivers/mtd/parsers/ofpart_bcm4908.c + create mode 100644 drivers/mtd/parsers/ofpart_bcm4908.h + rename drivers/mtd/parsers/{ofpart.c => ofpart_core.c} (88%) + +--- a/drivers/mtd/parsers/Kconfig ++++ b/drivers/mtd/parsers/Kconfig +@@ -83,6 +83,15 @@ config MTD_OF_PARTS + flash memory node, as described in + Documentation/devicetree/bindings/mtd/partition.txt. + ++config MTD_OF_PARTS_BCM4908 ++ bool "BCM4908 partitioning support" ++ depends on MTD_OF_PARTS && (ARCH_BCM4908 || COMPILE_TEST) ++ default ARCH_BCM4908 ++ help ++ This provides partitions parser for BCM4908 family devices ++ that can have multiple "firmware" partitions. It takes care of ++ finding currently used one and backup ones. ++ + 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 +@@ -5,6 +5,8 @@ obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm6 + obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o + obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o + obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o ++ofpart-y += ofpart_core.o ++ofpart-$(CONFIG_MTD_OF_PARTS_BCM4908) += ofpart_bcm4908.o + obj-$(CONFIG_MTD_PARSER_IMAGETAG) += parser_imagetag.o + obj-$(CONFIG_MTD_AFS_PARTS) += afs.o + obj-$(CONFIG_MTD_PARSER_TRX) += parser_trx.o +--- /dev/null ++++ b/drivers/mtd/parsers/ofpart_bcm4908.c +@@ -0,0 +1,66 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/* ++ * Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> ++ */ ++ ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/of.h> ++#include <linux/mtd/mtd.h> ++#include <linux/slab.h> ++#include <linux/mtd/partitions.h> ++ ++#include "ofpart_bcm4908.h" ++ ++#define BLPARAMS_FW_OFFSET "NAND_RFS_OFS" ++ ++static long long bcm4908_partitions_fw_offset(void) ++{ ++ struct device_node *root; ++ struct property *prop; ++ const char *s; ++ ++ root = of_find_node_by_path("/"); ++ if (!root) ++ return -ENOENT; ++ ++ of_property_for_each_string(root, "brcm_blparms", prop, s) { ++ size_t len = strlen(BLPARAMS_FW_OFFSET); ++ unsigned long offset; ++ int err; ++ ++ if (strncmp(s, BLPARAMS_FW_OFFSET, len) || s[len] != '=') ++ continue; ++ ++ err = kstrtoul(s + len + 1, 0, &offset); ++ if (err) { ++ pr_err("failed to parse %s\n", s + len + 1); ++ return err; ++ } ++ ++ return offset << 10; ++ } ++ ++ return -ENOENT; ++} ++ ++int bcm4908_partitions_post_parse(struct mtd_info *mtd, struct mtd_partition *parts, int nr_parts) ++{ ++ long long fw_offset; ++ int i; ++ ++ fw_offset = bcm4908_partitions_fw_offset(); ++ ++ for (i = 0; i < nr_parts; i++) { ++ if (of_device_is_compatible(parts[i].of_node, "brcm,bcm4908-firmware")) { ++ if (fw_offset < 0 || parts[i].offset == fw_offset) ++ parts[i].name = "firmware"; ++ else ++ parts[i].name = "backup"; ++ } ++ } ++ ++ return 0; ++} ++ ++MODULE_LICENSE("GPL"); +--- /dev/null ++++ b/drivers/mtd/parsers/ofpart_bcm4908.h +@@ -0,0 +1,15 @@ ++/* SPDX-License-Identifier: GPL-2.0 */ ++#ifndef __BCM4908_PARTITIONS_H ++#define __BCM4908_PARTITIONS_H ++ ++#ifdef CONFIG_MTD_OF_PARTS_BCM4908 ++int bcm4908_partitions_post_parse(struct mtd_info *mtd, struct mtd_partition *parts, int nr_parts); ++#else ++static inline int bcm4908_partitions_post_parse(struct mtd_info *mtd, struct mtd_partition *parts, ++ int nr_parts) ++{ ++ return -EOPNOTSUPP; ++} ++#endif ++ ++#endif +--- a/drivers/mtd/parsers/ofpart.c ++++ /dev/null +@@ -1,236 +0,0 @@ +-// SPDX-License-Identifier: GPL-2.0-or-later +-/* +- * Flash partitions described by the OF (or flattened) device tree +- * +- * Copyright © 2006 MontaVista Software Inc. +- * Author: Vitaly Wool <vwool@ru.mvista.com> +- * +- * Revised to handle newer style flash binding by: +- * Copyright © 2007 David Gibson, IBM Corporation. +- */ +- +-#include <linux/module.h> +-#include <linux/init.h> +-#include <linux/of.h> +-#include <linux/mtd/mtd.h> +-#include <linux/slab.h> +-#include <linux/mtd/partitions.h> +- +-static bool node_has_compatible(struct device_node *pp) +-{ +- return of_get_property(pp, "compatible", NULL); +-} +- +-static int parse_fixed_partitions(struct mtd_info *master, +- const struct mtd_partition **pparts, +- struct mtd_part_parser_data *data) +-{ +- struct mtd_partition *parts; +- struct device_node *mtd_node; +- struct device_node *ofpart_node; +- const char *partname; +- struct device_node *pp; +- int nr_parts, i, ret = 0; +- bool dedicated = true; +- +- +- /* Pull of_node from the master device node */ +- mtd_node = mtd_get_of_node(master); +- if (!mtd_node) +- return 0; +- +- ofpart_node = of_get_child_by_name(mtd_node, "partitions"); +- if (!ofpart_node) { +- /* +- * We might get here even when ofpart isn't used at all (e.g., +- * when using another parser), so don't be louder than +- * KERN_DEBUG +- */ +- pr_debug("%s: 'partitions' subnode not found on %pOF. Trying to parse direct subnodes as partitions.\n", +- master->name, mtd_node); +- ofpart_node = mtd_node; +- dedicated = false; +- } else if (!of_device_is_compatible(ofpart_node, "fixed-partitions")) { +- /* The 'partitions' subnode might be used by another parser */ +- return 0; +- } +- +- /* First count the subnodes */ +- nr_parts = 0; +- for_each_child_of_node(ofpart_node, pp) { +- if (!dedicated && node_has_compatible(pp)) +- continue; +- +- nr_parts++; +- } +- +- if (nr_parts == 0) +- return 0; +- +- parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL); +- if (!parts) +- return -ENOMEM; +- +- i = 0; +- for_each_child_of_node(ofpart_node, pp) { +- const __be32 *reg; +- int len; +- int a_cells, s_cells; +- +- if (!dedicated && node_has_compatible(pp)) +- continue; +- +- reg = of_get_property(pp, "reg", &len); +- if (!reg) { +- if (dedicated) { +- pr_debug("%s: ofpart partition %pOF (%pOF) missing reg property.\n", +- master->name, pp, +- mtd_node); +- goto ofpart_fail; +- } else { +- nr_parts--; +- continue; +- } +- } +- +- a_cells = of_n_addr_cells(pp); +- s_cells = of_n_size_cells(pp); +- if (len / 4 != a_cells + s_cells) { +- pr_debug("%s: ofpart partition %pOF (%pOF) error parsing reg property.\n", +- master->name, pp, +- mtd_node); +- goto ofpart_fail; +- } +- +- parts[i].offset = of_read_number(reg, a_cells); +- parts[i].size = of_read_number(reg + a_cells, s_cells); +- parts[i].of_node = pp; +- +- partname = of_get_property(pp, "label", &len); +- if (!partname) +- partname = of_get_property(pp, "name", &len); +- parts[i].name = partname; +- +- if (of_get_property(pp, "read-only", &len)) +- parts[i].mask_flags |= MTD_WRITEABLE; +- +- if (of_get_property(pp, "lock", &len)) +- parts[i].mask_flags |= MTD_POWERUP_LOCK; +- +- i++; +- } +- +- if (!nr_parts) +- goto ofpart_none; +- +- *pparts = parts; +- return nr_parts; +- +-ofpart_fail: +- pr_err("%s: error parsing ofpart partition %pOF (%pOF)\n", +- master->name, pp, mtd_node); +- ret = -EINVAL; +-ofpart_none: +- of_node_put(pp); +- kfree(parts); +- return ret; +-} +- +-static const struct of_device_id parse_ofpart_match_table[] = { +- { .compatible = "fixed-partitions" }, +- {}, +-}; +-MODULE_DEVICE_TABLE(of, parse_ofpart_match_table); +- +-static struct mtd_part_parser ofpart_parser = { +- .parse_fn = parse_fixed_partitions, +- .name = "fixed-partitions", +- .of_match_table = parse_ofpart_match_table, +-}; +- +-static int parse_ofoldpart_partitions(struct mtd_info *master, +- const struct mtd_partition **pparts, +- struct mtd_part_parser_data *data) +-{ +- struct mtd_partition *parts; +- struct device_node *dp; +- int i, plen, nr_parts; +- const struct { +- __be32 offset, len; +- } *part; +- const char *names; +- +- /* Pull of_node from the master device node */ +- dp = mtd_get_of_node(master); +- if (!dp) +- return 0; +- +- part = of_get_property(dp, "partitions", &plen); +- if (!part) +- return 0; /* No partitions found */ +- +- pr_warn("Device tree uses obsolete partition map binding: %pOF\n", dp); +- +- nr_parts = plen / sizeof(part[0]); +- +- parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL); +- if (!parts) +- return -ENOMEM; +- +- names = of_get_property(dp, "partition-names", &plen); +- +- for (i = 0; i < nr_parts; i++) { +- parts[i].offset = be32_to_cpu(part->offset); +- parts[i].size = be32_to_cpu(part->len) & ~1; +- /* bit 0 set signifies read only partition */ +- if (be32_to_cpu(part->len) & 1) +- parts[i].mask_flags = MTD_WRITEABLE; +- +- if (names && (plen > 0)) { +- int len = strlen(names) + 1; +- +- parts[i].name = names; +- plen -= len; +- names += len; +- } else { +- parts[i].name = "unnamed"; +- } +- +- part++; +- } +- +- *pparts = parts; +- return nr_parts; +-} +- +-static struct mtd_part_parser ofoldpart_parser = { +- .parse_fn = parse_ofoldpart_partitions, +- .name = "ofoldpart", +-}; +- +-static int __init ofpart_parser_init(void) +-{ +- register_mtd_parser(&ofpart_parser); +- register_mtd_parser(&ofoldpart_parser); +- return 0; +-} +- +-static void __exit ofpart_parser_exit(void) +-{ +- deregister_mtd_parser(&ofpart_parser); +- deregister_mtd_parser(&ofoldpart_parser); +-} +- +-module_init(ofpart_parser_init); +-module_exit(ofpart_parser_exit); +- +-MODULE_LICENSE("GPL"); +-MODULE_DESCRIPTION("Parser for MTD partitioning information in device tree"); +-MODULE_AUTHOR("Vitaly Wool, David Gibson"); +-/* +- * When MTD core cannot find the requested parser, it tries to load the module +- * with the same name. Since we provide the ofoldpart parser, we should have +- * the corresponding alias. +- */ +-MODULE_ALIAS("fixed-partitions"); +-MODULE_ALIAS("ofoldpart"); +--- /dev/null ++++ b/drivers/mtd/parsers/ofpart_core.c +@@ -0,0 +1,260 @@ ++// SPDX-License-Identifier: GPL-2.0-or-later ++/* ++ * Flash partitions described by the OF (or flattened) device tree ++ * ++ * Copyright © 2006 MontaVista Software Inc. ++ * Author: Vitaly Wool <vwool@ru.mvista.com> ++ * ++ * Revised to handle newer style flash binding by: ++ * Copyright © 2007 David Gibson, IBM Corporation. ++ */ ++ ++#include <linux/module.h> ++#include <linux/init.h> ++#include <linux/of.h> ++#include <linux/mtd/mtd.h> ++#include <linux/slab.h> ++#include <linux/mtd/partitions.h> ++ ++#include "ofpart_bcm4908.h" ++ ++struct fixed_partitions_quirks { ++ int (*post_parse)(struct mtd_info *mtd, struct mtd_partition *parts, int nr_parts); ++}; ++ ++struct fixed_partitions_quirks bcm4908_partitions_quirks = { ++ .post_parse = bcm4908_partitions_post_parse, ++}; ++ ++static const struct of_device_id parse_ofpart_match_table[]; ++ ++static bool node_has_compatible(struct device_node *pp) ++{ ++ return of_get_property(pp, "compatible", NULL); ++} ++ ++static int parse_fixed_partitions(struct mtd_info *master, ++ const struct mtd_partition **pparts, ++ struct mtd_part_parser_data *data) ++{ ++ const struct fixed_partitions_quirks *quirks; ++ const struct of_device_id *of_id; ++ struct mtd_partition *parts; ++ struct device_node *mtd_node; ++ struct device_node *ofpart_node; ++ const char *partname; ++ struct device_node *pp; ++ int nr_parts, i, ret = 0; ++ bool dedicated = true; ++ ++ /* Pull of_node from the master device node */ ++ mtd_node = mtd_get_of_node(master); ++ if (!mtd_node) ++ return 0; ++ ++ ofpart_node = of_get_child_by_name(mtd_node, "partitions"); ++ if (!ofpart_node) { ++ /* ++ * We might get here even when ofpart isn't used at all (e.g., ++ * when using another parser), so don't be louder than ++ * KERN_DEBUG ++ */ ++ pr_debug("%s: 'partitions' subnode not found on %pOF. Trying to parse direct subnodes as partitions.\n", ++ master->name, mtd_node); ++ ofpart_node = mtd_node; ++ dedicated = false; ++ } ++ ++ of_id = of_match_node(parse_ofpart_match_table, ofpart_node); ++ if (dedicated && !of_id) { ++ /* The 'partitions' subnode might be used by another parser */ ++ return 0; ++ } ++ ++ quirks = of_id ? of_id->data : NULL; ++ ++ /* First count the subnodes */ ++ nr_parts = 0; ++ for_each_child_of_node(ofpart_node, pp) { ++ if (!dedicated && node_has_compatible(pp)) ++ continue; ++ ++ nr_parts++; ++ } ++ ++ if (nr_parts == 0) ++ return 0; ++ ++ parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL); ++ if (!parts) ++ return -ENOMEM; ++ ++ i = 0; ++ for_each_child_of_node(ofpart_node, pp) { ++ const __be32 *reg; ++ int len; ++ int a_cells, s_cells; ++ ++ if (!dedicated && node_has_compatible(pp)) ++ continue; ++ ++ reg = of_get_property(pp, "reg", &len); ++ if (!reg) { ++ if (dedicated) { ++ pr_debug("%s: ofpart partition %pOF (%pOF) missing reg property.\n", ++ master->name, pp, ++ mtd_node); ++ goto ofpart_fail; ++ } else { ++ nr_parts--; ++ continue; ++ } ++ } ++ ++ a_cells = of_n_addr_cells(pp); ++ s_cells = of_n_size_cells(pp); ++ if (len / 4 != a_cells + s_cells) { ++ pr_debug("%s: ofpart partition %pOF (%pOF) error parsing reg property.\n", ++ master->name, pp, ++ mtd_node); ++ goto ofpart_fail; ++ } ++ ++ parts[i].offset = of_read_number(reg, a_cells); ++ parts[i].size = of_read_number(reg + a_cells, s_cells); ++ parts[i].of_node = pp; ++ ++ partname = of_get_property(pp, "label", &len); ++ if (!partname) ++ partname = of_get_property(pp, "name", &len); ++ parts[i].name = partname; ++ ++ if (of_get_property(pp, "read-only", &len)) ++ parts[i].mask_flags |= MTD_WRITEABLE; ++ ++ if (of_get_property(pp, "lock", &len)) ++ parts[i].mask_flags |= MTD_POWERUP_LOCK; ++ ++ i++; ++ } ++ ++ if (!nr_parts) ++ goto ofpart_none; ++ ++ if (quirks && quirks->post_parse) ++ quirks->post_parse(master, parts, nr_parts); ++ ++ *pparts = parts; ++ return nr_parts; ++ ++ofpart_fail: ++ pr_err("%s: error parsing ofpart partition %pOF (%pOF)\n", ++ master->name, pp, mtd_node); ++ ret = -EINVAL; ++ofpart_none: ++ of_node_put(pp); ++ kfree(parts); ++ return ret; ++} ++ ++static const struct of_device_id parse_ofpart_match_table[] = { ++ /* Generic */ ++ { .compatible = "fixed-partitions" }, ++ /* Customized */ ++ { .compatible = "brcm,bcm4908-partitions", .data = &bcm4908_partitions_quirks, }, ++ {}, ++}; ++MODULE_DEVICE_TABLE(of, parse_ofpart_match_table); ++ ++static struct mtd_part_parser ofpart_parser = { ++ .parse_fn = parse_fixed_partitions, ++ .name = "fixed-partitions", ++ .of_match_table = parse_ofpart_match_table, ++}; ++ ++static int parse_ofoldpart_partitions(struct mtd_info *master, ++ const struct mtd_partition **pparts, ++ struct mtd_part_parser_data *data) ++{ ++ struct mtd_partition *parts; ++ struct device_node *dp; ++ int i, plen, nr_parts; ++ const struct { ++ __be32 offset, len; ++ } *part; ++ const char *names; ++ ++ /* Pull of_node from the master device node */ ++ dp = mtd_get_of_node(master); ++ if (!dp) ++ return 0; ++ ++ part = of_get_property(dp, "partitions", &plen); ++ if (!part) ++ return 0; /* No partitions found */ ++ ++ pr_warn("Device tree uses obsolete partition map binding: %pOF\n", dp); ++ ++ nr_parts = plen / sizeof(part[0]); ++ ++ parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL); ++ if (!parts) ++ return -ENOMEM; ++ ++ names = of_get_property(dp, "partition-names", &plen); ++ ++ for (i = 0; i < nr_parts; i++) { ++ parts[i].offset = be32_to_cpu(part->offset); ++ parts[i].size = be32_to_cpu(part->len) & ~1; ++ /* bit 0 set signifies read only partition */ ++ if (be32_to_cpu(part->len) & 1) ++ parts[i].mask_flags = MTD_WRITEABLE; ++ ++ if (names && (plen > 0)) { ++ int len = strlen(names) + 1; ++ ++ parts[i].name = names; ++ plen -= len; ++ names += len; ++ } else { ++ parts[i].name = "unnamed"; ++ } ++ ++ part++; ++ } ++ ++ *pparts = parts; ++ return nr_parts; ++} ++ ++static struct mtd_part_parser ofoldpart_parser = { ++ .parse_fn = parse_ofoldpart_partitions, ++ .name = "ofoldpart", ++}; ++ ++static int __init ofpart_parser_init(void) ++{ ++ register_mtd_parser(&ofpart_parser); ++ register_mtd_parser(&ofoldpart_parser); ++ return 0; ++} ++ ++static void __exit ofpart_parser_exit(void) ++{ ++ deregister_mtd_parser(&ofpart_parser); ++ deregister_mtd_parser(&ofoldpart_parser); ++} ++ ++module_init(ofpart_parser_init); ++module_exit(ofpart_parser_exit); ++ ++MODULE_LICENSE("GPL"); ++MODULE_DESCRIPTION("Parser for MTD partitioning information in device tree"); ++MODULE_AUTHOR("Vitaly Wool, David Gibson"); ++/* ++ * When MTD core cannot find the requested parser, it tries to load the module ++ * with the same name. Since we provide the ofoldpart parser, we should have ++ * the corresponding alias. ++ */ ++MODULE_ALIAS("fixed-partitions"); ++MODULE_ALIAS("ofoldpart"); diff --git a/target/linux/generic/backport-5.4/402-v5.12-0003-mtd-parsers-ofpart-support-BCM4908-fixed-partitions.patch b/target/linux/generic/backport-5.4/402-v5.12-0003-mtd-parsers-ofpart-support-BCM4908-fixed-partitions.patch deleted file mode 100644 index 340091fab9..0000000000 --- a/target/linux/generic/backport-5.4/402-v5.12-0003-mtd-parsers-ofpart-support-BCM4908-fixed-partitions.patch +++ /dev/null @@ -1,194 +0,0 @@ -From 09cf6ee6d21cd9ef2eb857ccb24305cf51166792 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> -Date: Thu, 11 Feb 2021 23:04:27 +0100 -Subject: [PATCH] mtd: parsers: ofpart: support BCM4908 fixed partitions -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -BCM4908 partitioning is based on fixed layout but allows specifying -multiple firmware partitions. It requires detecting which firmware -partition was used for booting current kernel. - -To support such cases without duplicating a lot of code (without copying -most of the ofpart.c code) support for post-parsing callback was added. - -BCM4908 callback simply reads offset of currently used firmware -partition from the DT. Bootloader specifies it using the "brcm_blparms" -property. - -Signed-off-by: Rafał Miłecki <rafal@milecki.pl> -Signed-off-by: Richard Weinberger <richard@nod.at> ---- - drivers/mtd/parsers/Makefile | 1 + - drivers/mtd/parsers/bcm4908-partitions.c | 64 ++++++++++++++++++++++++ - drivers/mtd/parsers/bcm4908-partitions.h | 7 +++ - drivers/mtd/parsers/ofpart.c | 28 ++++++++++- - 4 files changed, 98 insertions(+), 2 deletions(-) - create mode 100644 drivers/mtd/parsers/bcm4908-partitions.c - create mode 100644 drivers/mtd/parsers/bcm4908-partitions.h - ---- a/drivers/mtd/parsers/Makefile -+++ b/drivers/mtd/parsers/Makefile -@@ -4,6 +4,7 @@ obj-$(CONFIG_MTD_BCM47XX_PARTS) += bcm4 - obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm63xxpart.o - obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o - obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o -+obj-$(CONFIG_MTD_OF_PARTS) += bcm4908-partitions.o - obj-$(CONFIG_MTD_PARSER_IMAGETAG) += parser_imagetag.o - obj-$(CONFIG_MTD_AFS_PARTS) += afs.o - obj-$(CONFIG_MTD_PARSER_TRX) += parser_trx.o ---- /dev/null -+++ b/drivers/mtd/parsers/bcm4908-partitions.c -@@ -0,0 +1,64 @@ -+// SPDX-License-Identifier: GPL-2.0 -+/* -+ * Copyright (C) 2021 Rafał Miłecki <rafal@milecki.pl> -+ */ -+ -+#include <linux/module.h> -+#include <linux/init.h> -+#include <linux/of.h> -+#include <linux/mtd/mtd.h> -+#include <linux/slab.h> -+#include <linux/mtd/partitions.h> -+ -+#include "bcm4908-partitions.h" -+ -+#define BLPARAMS_FW_OFFSET "NAND_RFS_OFS" -+ -+static long long bcm4908_partitions_fw_offset(void) -+{ -+ struct device_node *root; -+ struct property *prop; -+ const char *s; -+ -+ root = of_find_node_by_path("/"); -+ if (!root) -+ return -ENOENT; -+ -+ of_property_for_each_string(root, "brcm_blparms", prop, s) { -+ size_t len = strlen(BLPARAMS_FW_OFFSET); -+ unsigned long offset; -+ int err; -+ -+ if (strncmp(s, BLPARAMS_FW_OFFSET, len) || s[len] != '=') -+ continue; -+ -+ err = kstrtoul(s + len + 1, 0, &offset); -+ if (err) { -+ pr_err("failed to parse %s\n", s + len + 1); -+ return err; -+ } -+ -+ return offset << 10; -+ } -+ -+ return -ENOENT; -+} -+ -+int bcm4908_partitions_post_parse(struct mtd_info *mtd, struct mtd_partition *parts, int nr_parts) -+{ -+ long long fw_offset; -+ int i; -+ -+ fw_offset = bcm4908_partitions_fw_offset(); -+ -+ for (i = 0; i < nr_parts; i++) { -+ if (of_device_is_compatible(parts[i].of_node, "brcm,bcm4908-firmware")) { -+ if (fw_offset < 0 || parts[i].offset == fw_offset) -+ parts[i].name = "firmware"; -+ else -+ parts[i].name = "backup"; -+ } -+ } -+ -+ return 0; -+} ---- /dev/null -+++ b/drivers/mtd/parsers/bcm4908-partitions.h -@@ -0,0 +1,7 @@ -+/* SPDX-License-Identifier: GPL-2.0 */ -+#ifndef __BCM4908_PARTITIONS_H -+#define __BCM4908_PARTITIONS_H -+ -+int bcm4908_partitions_post_parse(struct mtd_info *mtd, struct mtd_partition *parts, int nr_parts); -+ -+#endif ---- a/drivers/mtd/parsers/ofpart.c -+++ b/drivers/mtd/parsers/ofpart.c -@@ -16,6 +16,18 @@ - #include <linux/slab.h> - #include <linux/mtd/partitions.h> - -+#include "bcm4908-partitions.h" -+ -+struct fixed_partitions_quirks { -+ int (*post_parse)(struct mtd_info *mtd, struct mtd_partition *parts, int nr_parts); -+}; -+ -+struct fixed_partitions_quirks bcm4908_partitions_quirks = { -+ .post_parse = bcm4908_partitions_post_parse, -+}; -+ -+static const struct of_device_id parse_ofpart_match_table[]; -+ - static bool node_has_compatible(struct device_node *pp) - { - return of_get_property(pp, "compatible", NULL); -@@ -25,6 +37,8 @@ static int parse_fixed_partitions(struct - const struct mtd_partition **pparts, - struct mtd_part_parser_data *data) - { -+ const struct fixed_partitions_quirks *quirks; -+ const struct of_device_id *of_id; - struct mtd_partition *parts; - struct device_node *mtd_node; - struct device_node *ofpart_node; -@@ -33,7 +47,6 @@ static int parse_fixed_partitions(struct - int nr_parts, i, ret = 0; - bool dedicated = true; - -- - /* Pull of_node from the master device node */ - mtd_node = mtd_get_of_node(master); - if (!mtd_node) -@@ -50,11 +63,16 @@ static int parse_fixed_partitions(struct - master->name, mtd_node); - ofpart_node = mtd_node; - dedicated = false; -- } else if (!of_device_is_compatible(ofpart_node, "fixed-partitions")) { -+ } -+ -+ of_id = of_match_node(parse_ofpart_match_table, ofpart_node); -+ if (dedicated && !of_id) { - /* The 'partitions' subnode might be used by another parser */ - return 0; - } - -+ quirks = of_id ? of_id->data : NULL; -+ - /* First count the subnodes */ - nr_parts = 0; - for_each_child_of_node(ofpart_node, pp) { -@@ -123,6 +141,9 @@ static int parse_fixed_partitions(struct - if (!nr_parts) - goto ofpart_none; - -+ if (quirks && quirks->post_parse) -+ quirks->post_parse(master, parts, nr_parts); -+ - *pparts = parts; - return nr_parts; - -@@ -137,7 +158,10 @@ ofpart_none: - } - - static const struct of_device_id parse_ofpart_match_table[] = { -+ /* Generic */ - { .compatible = "fixed-partitions" }, -+ /* Customized */ -+ { .compatible = "brcm,bcm4908-partitions", .data = &bcm4908_partitions_quirks, }, - {}, - }; - MODULE_DEVICE_TABLE(of, parse_ofpart_match_table); diff --git a/target/linux/generic/backport-5.4/402-v5.12-0004-mtd-parsers-ofpart-fix-building-as-module.patch b/target/linux/generic/backport-5.4/402-v5.12-0004-mtd-parsers-ofpart-fix-building-as-module.patch deleted file mode 100644 index 47223098ec..0000000000 --- a/target/linux/generic/backport-5.4/402-v5.12-0004-mtd-parsers-ofpart-fix-building-as-module.patch +++ /dev/null @@ -1,40 +0,0 @@ -From bc6dcf44da2bea215ae3edbdac5d350e96de3996 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> -Date: Mon, 15 Feb 2021 08:28:44 +0100 -Subject: [PATCH] mtd: parsers: ofpart: fix building as module -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -This fixes: -ERROR: modpost: missing MODULE_LICENSE() in drivers/mtd/parsers/bcm4908-partitions.o -ERROR: modpost: "bcm4908_partitions_post_parse" [drivers/mtd/parsers/ofpart.ko] undefined! - -Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> -Fixes: 09cf6ee6d21c ("mtd: parsers: ofpart: support BCM4908 fixed partitions") -Signed-off-by: Rafał Miłecki <rafal@milecki.pl> -Signed-off-by: Richard Weinberger <richard@nod.at> ---- - drivers/mtd/parsers/Makefile | 2 +- - drivers/mtd/parsers/bcm4908-partitions.c | 2 ++ - 2 files changed, 3 insertions(+), 1 deletion(-) - ---- a/drivers/mtd/parsers/Makefile -+++ b/drivers/mtd/parsers/Makefile -@@ -4,7 +4,7 @@ obj-$(CONFIG_MTD_BCM47XX_PARTS) += bcm4 - obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm63xxpart.o - obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o - obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o --obj-$(CONFIG_MTD_OF_PARTS) += bcm4908-partitions.o -+ofpart-objs := bcm4908-partitions.o - obj-$(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/bcm4908-partitions.c -+++ b/drivers/mtd/parsers/bcm4908-partitions.c -@@ -62,3 +62,5 @@ int bcm4908_partitions_post_parse(struct - - return 0; - } -+ -+MODULE_LICENSE("GPL"); diff --git a/target/linux/generic/pending-5.4/430-mtd-add-myloader-partition-parser.patch b/target/linux/generic/pending-5.4/430-mtd-add-myloader-partition-parser.patch index fc99996674..9600dfc67a 100644 --- a/target/linux/generic/pending-5.4/430-mtd-add-myloader-partition-parser.patch +++ b/target/linux/generic/pending-5.4/430-mtd-add-myloader-partition-parser.patch @@ -41,8 +41,8 @@ Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o +obj-$(CONFIG_MTD_MYLOADER_PARTS) += myloader.o obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o - ofpart-objs := bcm4908-partitions.o obj-$(CONFIG_MTD_PARSER_IMAGETAG) += parser_imagetag.o + obj-$(CONFIG_MTD_AFS_PARTS) += afs.o --- /dev/null +++ b/drivers/mtd/parsers/myloader.c @@ -0,0 +1,181 @@ diff --git a/target/linux/generic/pending-5.4/435-mtd-add-routerbootpart-parser-config.patch b/target/linux/generic/pending-5.4/435-mtd-add-routerbootpart-parser-config.patch index ed7eb6e989..1523e757c7 100644 --- a/target/linux/generic/pending-5.4/435-mtd-add-routerbootpart-parser-config.patch +++ b/target/linux/generic/pending-5.4/435-mtd-add-routerbootpart-parser-config.patch @@ -31,7 +31,7 @@ Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org> + formatted DTS. --- a/drivers/mtd/parsers/Makefile +++ b/drivers/mtd/parsers/Makefile -@@ -11,3 +11,4 @@ obj-$(CONFIG_MTD_AFS_PARTS) += afs.o +@@ -10,3 +10,4 @@ obj-$(CONFIG_MTD_AFS_PARTS) += afs.o obj-$(CONFIG_MTD_PARSER_TRX) += parser_trx.o obj-$(CONFIG_MTD_SHARPSL_PARTS) += sharpslpart.o obj-$(CONFIG_MTD_REDBOOT_PARTS) += redboot.o |