diff options
Diffstat (limited to 'app/aboot/aboot.c')
| -rw-r--r-- | app/aboot/aboot.c | 59 |
1 files changed, 58 insertions, 1 deletions
diff --git a/app/aboot/aboot.c b/app/aboot/aboot.c index 2927aeed..3ae60429 100644 --- a/app/aboot/aboot.c +++ b/app/aboot/aboot.c @@ -585,6 +585,60 @@ void generate_atags(unsigned *ptr, const char *cmdline, ptr = atag_end(ptr); } +/* todo: give lk strtoul and nuke this */ +static unsigned hex2unsigned(const char *x) +{ + unsigned n = 0; + + while(*x) { + switch(*x) { + case '0': case '1': case '2': case '3': case '4': + case '5': case '6': case '7': case '8': case '9': + n = (n << 4) | (*x - '0'); + break; + case 'a': case 'b': case 'c': + case 'd': case 'e': case 'f': + n = (n << 4) | (*x - 'a' + 10); + break; + case 'A': case 'B': case 'C': + case 'D': case 'E': case 'F': + n = (n << 4) | (*x - 'A' + 10); + break; + default: + return n; + } + x++; + } + + return n; +} + +/* generate a unique locally administrated MAC */ +unsigned char* generate_mac_address() +{ + int len, i; + char sn[] = "00000000"; + unsigned char * mac; + + /* make sure we have exactly 8 char for serialno */ + len = MIN(strlen(sn_buf), 8); + memcpy(&sn[8-len], sn_buf, len); + + mac = (unsigned char*) malloc(6*sizeof(unsigned char)); + ASSERT(mac != NULL); + + /* fill in the mac with serialno, use locally adminstrated pool */ + mac[0] = 0x02; + mac[1] = 00; + for (i = 3 ; i >= 0; i--) + { + mac[i+2] = hex2unsigned(&sn[2*i]); + sn[2*i]=0; + } + + return mac; +} + typedef void entry_func_ptr(unsigned, unsigned, unsigned*); void boot_linux(void *kernel, unsigned *tags, const char *cmdline, unsigned machtype, @@ -593,6 +647,7 @@ void boot_linux(void *kernel, unsigned *tags, unsigned char *final_cmdline; #if DEVICE_TREE int ret = 0; + unsigned char* mac; #endif void (*entry)(unsigned, unsigned, unsigned*) = (entry_func_ptr*)(PA((addr_t)kernel)); @@ -606,8 +661,10 @@ void boot_linux(void *kernel, unsigned *tags, #if DEVICE_TREE dprintf(INFO, "Updating device tree: start\n"); + mac = generate_mac_address(); + /* Update the Device Tree */ - ret = update_device_tree((void *)tags, final_cmdline, ramdisk, ramdisk_size); + ret = update_device_tree((void *)tags, final_cmdline, ramdisk, ramdisk_size, mac); if(ret) { dprintf(CRITICAL, "ERROR: Updating Device Tree Failed \n"); |