If unsure, say 'N'.
-config MTD_OF_PARTS
- tristate "OpenFirmware partitioning information support"
- default y
- depends on OF
- help
- This provides a partition parsing function which derives
- the partition map from the children of the flash node,
- as described in Documentation/devicetree/bindings/mtd/partition.txt.
-
menu "Partition parsers"
source "drivers/mtd/parsers/Kconfig"
endmenu
obj-$(CONFIG_MTD) += mtd.o
mtd-y := mtdcore.o mtdsuper.o mtdconcat.o mtdpart.o mtdchar.o
-obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o
obj-$(CONFIG_MTD_CMDLINE_PARTS) += cmdlinepart.o
obj-y += parsers/
+++ /dev/null
-// 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");
This provides partition parsing for BCM63xx devices with CFE
bootloaders.
+config MTD_OF_PARTS
+ tristate "OpenFirmware (device tree) partitioning parser"
+ default y
+ depends on OF
+ help
+ This provides a open firmware device tree partition parser
+ which derives the partition map from the children of the
+ flash memory node, as described in
+ Documentation/devicetree/bindings/mtd/partition.txt.
+
config MTD_PARSER_IMAGETAG
tristate "Parser for BCM963XX Image Tag format partitions"
depends on BCM63XX || BMIPS_GENERIC || COMPILE_TEST
obj-$(CONFIG_MTD_AR7_PARTS) += ar7part.o
obj-$(CONFIG_MTD_BCM47XX_PARTS) += bcm47xxpart.o
obj-$(CONFIG_MTD_BCM63XX_PARTS) += bcm63xxpart.o
+obj-$(CONFIG_MTD_OF_PARTS) += ofpart.o
obj-$(CONFIG_MTD_PARSER_IMAGETAG) += parser_imagetag.o
obj-$(CONFIG_MTD_AFS_PARTS) += afs.o
obj-$(CONFIG_MTD_PARSER_TRX) += parser_trx.o
--- /dev/null
+// 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");
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