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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
commita9d4bdee43e0556020b1e0c6e153e39f86e51093 (patch)
treeb9bf0ed1cdaab84bf474d5817f9c7eeec9a9ed2c
parent0f19cb38114ea2de9a1a6e8828d4bef41a02a586 (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> SVN-Revision: 36957
-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)