mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 22:23:27 +00:00
133 lines
3.0 KiB
Diff
133 lines
3.0 KiB
Diff
From f7d3f7790b75b098e1c92530dc3d28ba3b40b5a4 Mon Sep 17 00:00:00 2001
|
|
From: Jonas Gorski <jogo@openwrt.org>
|
|
Date: Sat, 10 Aug 2013 12:48:51 +0200
|
|
Subject: [PATCH 28/29] of: add support for parsing mac addresses from mtd
|
|
|
|
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
|
|
---
|
|
drivers/of/of_net.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++-
|
|
1 file changed, 99 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/of/of_net.c
|
|
+++ b/drivers/of/of_net.c
|
|
@@ -10,6 +10,7 @@
|
|
#include <linux/of_net.h>
|
|
#include <linux/phy.h>
|
|
#include <linux/export.h>
|
|
+#include <linux/mtd/mtd.h>
|
|
|
|
/**
|
|
* It maps 'enum phy_interface_t' found in include/linux/phy.h
|
|
@@ -55,6 +56,103 @@ const int of_get_phy_mode(struct device_
|
|
}
|
|
EXPORT_SYMBOL_GPL(of_get_phy_mode);
|
|
|
|
+static const void *of_get_mac_address_mtd(struct device_node *np)
|
|
+{
|
|
+ const __be32 *list;
|
|
+ int size, ret;
|
|
+ size_t ret_len;
|
|
+ phandle phandle;
|
|
+ struct device_node *part_node;
|
|
+ struct mtd_info *mtd;
|
|
+ const char *part;
|
|
+ u8 mac[ETH_ALEN];
|
|
+ u64 offset;
|
|
+ bool parse_mac = false;
|
|
+
|
|
+ if (!IS_ENABLED(CONFIG_MTD))
|
|
+ return NULL;
|
|
+
|
|
+ list = of_get_property(np, "mtd-mac-address", &size);
|
|
+
|
|
+ if (!list) {
|
|
+ list = of_get_property(np, "mtd-mac-address-string", &size);
|
|
+ parse_mac = true;
|
|
+ }
|
|
+
|
|
+ if (!list)
|
|
+ return NULL;
|
|
+
|
|
+ if (size != sizeof(*list) * 2)
|
|
+ return NULL;
|
|
+
|
|
+ phandle = be32_to_cpup(list++);
|
|
+ if (!phandle)
|
|
+ return NULL;
|
|
+
|
|
+ part_node = of_find_node_by_phandle(phandle);
|
|
+ if (!part_node)
|
|
+ return NULL;
|
|
+
|
|
+ offset = be32_to_cpup(list++);
|
|
+
|
|
+ part = of_get_property(part_node, "label", NULL);
|
|
+ if (!part)
|
|
+ part = part_node->name;
|
|
+
|
|
+ mtd = get_mtd_device_nm(part);
|
|
+
|
|
+ of_node_put(part_node);
|
|
+
|
|
+ if (IS_ERR(mtd))
|
|
+ return NULL;
|
|
+
|
|
+ if (parse_mac) {
|
|
+ u8 mac_str[18];
|
|
+
|
|
+ ret = mtd_read(mtd, offset, 18, &ret_len, (u_char *)&mac_str);
|
|
+ if (!ret && ret_len != 18)
|
|
+ ret = -EIO;
|
|
+
|
|
+ if (!ret)
|
|
+ ret_len = sscanf(mac_str, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
|
|
+ mac, mac + 1, mac + 2, mac + 3,
|
|
+ mac + 4, mac + 5);
|
|
+
|
|
+ } else {
|
|
+ ret = mtd_read(mtd, offset, ETH_ALEN, &ret_len, (u_char *)&mac);
|
|
+ }
|
|
+
|
|
+ put_mtd_device(mtd);
|
|
+
|
|
+ if (!ret && ret_len == ETH_ALEN && is_valid_ether_addr(mac)) {
|
|
+ struct property *pp = kzalloc(sizeof(*pp), GFP_KERNEL);
|
|
+
|
|
+ if (!pp)
|
|
+ return NULL;
|
|
+
|
|
+ pp->name = kstrdup("mac-address", GFP_KERNEL);
|
|
+ pp->value = kzalloc(ETH_ALEN, GFP_KERNEL);
|
|
+
|
|
+ if (!pp->name || !pp->value) {
|
|
+ kfree(pp->name);
|
|
+ kfree(pp);
|
|
+ return NULL;
|
|
+ }
|
|
+
|
|
+ memcpy(pp->value, mac, ETH_ALEN);
|
|
+ pp->length = ETH_ALEN;
|
|
+
|
|
+ if (of_find_property(np, "mac-address", NULL))
|
|
+ of_update_property(np, pp);
|
|
+ else
|
|
+ of_add_property(np, pp);
|
|
+
|
|
+ return pp->value;
|
|
+ }
|
|
+
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
/**
|
|
* Search the device tree for the best MAC address to use. 'mac-address' is
|
|
* checked first, because that is supposed to contain to "most recent" MAC
|
|
@@ -89,6 +187,6 @@ const void *of_get_mac_address(struct de
|
|
if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
|
|
return pp->value;
|
|
|
|
- return NULL;
|
|
+ return of_get_mac_address_mtd(np);
|
|
}
|
|
EXPORT_SYMBOL(of_get_mac_address);
|