I loaded openwrt svn 16516 on my TEW-652BRP and noticed that I was getting
random MAC addresses assigned:
ar71xx: using random MAC address for eth0
ar71xx: using random MAC address for eth1
My investigation of this lead me to examine the following files:
target/linux/ar71xx/files/arch/mips/ar71xx/devices.c
target/linux/ar71xx/files/arch/mips/ar71xx/prom.c
target/linux/generic-2.6/files/arch/mips/fw/myloader/myloader.c
target/linux/generic-2.6/files/include/linux/myloader.h
dmesg reports the following message from prom.c and myloader.c:
prom: fw_arg0=00000002, fw_arg1=8006040c, fw_arg2=00000000,
fw_arg3=00000000
MyLoader: sysp=ccc4fdcd, boardp=efbccce7, parts=cdedfcee
>From the above, I can determine that myloader_get_info() will return null,
>because the magic values read above don't match those in myloader.h:
---- snip from myloader.h ----
/* Myloader specific magic numbers */
#define MYLO_MAGIC_SYS_PARAMS 0x20021107
#define MYLO_MAGIC_PARTITIONS 0x20021103
#define MYLO_MAGIC_BOARD_PARAMS 0x20021103
---- end snip from myloader.h ----
---- snip from myloader.c ----
struct myloader_info * __init myloader_get_info(void)
{
struct mylo_system_params *sysp;
struct mylo_board_params *boardp;
struct mylo_partition_table *parts;
if (myloader_found)
return &myloader_info;
sysp = (struct mylo_system_params *)(SYS_PARAMS_ADDR);
boardp = (struct mylo_board_params *)(BOARD_PARAMS_ADDR);
parts = (struct mylo_partition_table *)(PART_TABLE_ADDR);
printk(KERN_DEBUG "MyLoader: sysp=%08x, boardp=%08x, parts=%08x\n",
sysp->magic, boardp->magic, parts->magic);
/* Check for some magic numbers */
if (sysp->magic != MYLO_MAGIC_SYS_PARAMS ||
boardp->magic != MYLO_MAGIC_BOARD_PARAMS ||
le32_to_cpu(parts->magic) != MYLO_MAGIC_PARTITIONS)
return NULL;
---- end snip from myloader.c ----
Jon
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