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- --- a/driver/nvram_stub.c
- +++ b/driver/nvram_stub.c
- @@ -5,6 +5,8 @@
- #include <siutils.h>
- #include <bcmendian.h>
- #include <bcmnvram.h>
- +#include <proto/ethernet.h>
- +#include <linux/errno.h>
-
- #ifdef BCMDBG_ERR
- #define NVR_MSG(x) printf x
- @@ -24,6 +26,7 @@ typedef struct _vars {
- static vars_t *vars = NULL;
- static int nvram_init_done = 0;
- extern char *nvram_buf[];
- +static void fixup_mac_addr(vars_t *new);
-
- int
- BCMATTACHFN(nvram_init)(void *si)
- @@ -55,6 +58,7 @@ BCMATTACHFN(nvram_init)(void *si)
- vars = new;
-
- bcopy((char *)(&nvh[1]), new->vars, nvs);
- + fixup_mac_addr(new);
- return 0;
- }
-
- @@ -164,3 +168,65 @@ nvram_getall(char *buf, int count)
- *buf = '\0';
- return 0;
- }
- +
- +static bool nvram_is_valid_mac(struct ether_addr *mac)
- +{
- + return mac && !(mac->octet[0] == 0x00 && mac->octet[1] == 0x90 && mac->octet[2] == 0x4c);
- +}
- +
- +static int nvram_increase_mac_addr(struct ether_addr *mac, u8 num)
- +{
- + u8 *oui = mac->octet + ETHER_ADDR_LEN/2 - 1;
- + u8 *p = mac->octet + ETHER_ADDR_LEN - 1;
- +
- + do {
- + (*p) += num;
- + if (*p > num)
- + break;
- + p--;
- + num = 1;
- + } while (p != oui);
- +
- + if (p == oui) {
- + pr_err("unable to fetch mac address\n");
- + return -ENOENT;
- + }
- + return 0;
- +}
- +
- +static void nvram_change_mac_addr(vars_t *new, struct ether_addr *valid, const char *name)
- +{
- + char *macaddr_c;
- + struct ether_addr macaddr;
- +
- + macaddr_c = findvar(new->vars, new->vars + new->size, name);
- + if (!macaddr_c)
- + return;
- +
- + bcm_ether_atoe(macaddr_c, &macaddr);
- + if (nvram_is_valid_mac(&macaddr))
- + return;
- + nvram_increase_mac_addr(valid, 1);
- + bcm_ether_ntoa(valid, macaddr_c);
- +}
- +
- +static void fixup_mac_addr(vars_t *new)
- +{
- + char *macaddr_base_c;
- + struct ether_addr macaddr_base;
- +
- + macaddr_base_c = findvar(new->vars, new->vars + new->size, "et0macaddr");
- + if (!macaddr_base_c)
- + return;
- +
- + bcm_ether_atoe(macaddr_base_c, &macaddr_base);
- + if (!nvram_is_valid_mac(&macaddr_base))
- + return;
- +
- + /* jump over the first free address so it can be used for wan */
- + nvram_increase_mac_addr(&macaddr_base, 1);
- + nvram_change_mac_addr(new, &macaddr_base, "sb/1/macaddr");
- + nvram_change_mac_addr(new, &macaddr_base, "pci/1/1/macaddr");
- + nvram_change_mac_addr(new, &macaddr_base, "pci/1/2/macaddr");
- + nvram_change_mac_addr(new, &macaddr_base, "pci/2/1/macaddr");
- +}
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