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authorFlorian Fainelli <florian@openwrt.org>2013-06-18 10:54:24 +0000
committerFlorian Fainelli <florian@openwrt.org>2013-06-18 10:54:24 +0000
commit4c0b484f86cdde219085a2f9b0cb265da81cd970 (patch)
treea7bbf53b5919cf0bb94d544231bc9dcda6a93a0c /target/linux/brcm63xx
parent9a035029ca5be81c4ad81b2053db7a1fc2be7cf0 (diff)
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brcm63xx: provide a default sane MAC address for Cable Modem devices
Cable modem devices currently poke at some random location in RAM and may end up having an invalid MAC address which is not suitable. Provide a default one which is sane. Signed-off-by: Florian Fainelli <florian@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36957 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm63xx')
-rw-r--r--target/linux/brcm63xx/patches-3.9/426-hcs_mac_addr_pool.patch26
1 files changed, 26 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-3.9/426-hcs_mac_addr_pool.patch b/target/linux/brcm63xx/patches-3.9/426-hcs_mac_addr_pool.patch
new file mode 100644
index 0000000000..6354fe6214
--- /dev/null
+++ b/target/linux/brcm63xx/patches-3.9/426-hcs_mac_addr_pool.patch
@@ -0,0 +1,26 @@
+--- a/arch/mips/bcm63xx/nvram.c
++++ b/arch/mips/bcm63xx/nvram.c
+@@ -52,6 +52,7 @@ void __init bcm63xx_nvram_init(void *add
+ {
+ unsigned int check_len;
+ u32 crc, expected_crc;
++ u8 hcs_mac_addr[ETH_ALEN] = { 0x00, 0x10, 0x18, 0xff, 0xff, 0xff };
+
+ /* extract nvram data */
+ memcpy(&nvram, addr, sizeof(nvram));
+@@ -73,6 +74,15 @@ void __init bcm63xx_nvram_init(void *add
+ if (crc != expected_crc)
+ pr_warn("nvram checksum failed, contents may be invalid (expected %08x, got %08x)\n",
+ expected_crc, crc);
++
++ /* Cable modems have a different NVRAM which is embedded in the eCos
++ * firmware and not easily extractible, give at least a MAC address
++ * pool.
++ */
++ if (BCMCPU_IS_3368()) {
++ memcpy(nvram.mac_addr_base, hcs_mac_addr, ETH_ALEN);
++ nvram.mac_addr_count = 2;
++ }
+ }
+
+ u8 *bcm63xx_nvram_get_name(void)