/* * (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <common.h> #include "ax88796.h" /* * Set 1 bit data */ static void ax88796_bitset(u32 bit) { /* DATA1 */ if( bit ) EEDI_HIGH; else EEDI_LOW; EECLK_LOW; udelay(1000); EECLK_HIGH; udelay(1000); EEDI_LOW; } /* * Get 1 bit data */ static u8 ax88796_bitget(void) { u8 bit; EECLK_LOW; udelay(1000); /* DATA */ bit = EEDO; EECLK_HIGH; udelay(1000); return bit; } /* * Send COMMAND to EEPROM */ static void ax88796_eep_cmd(u8 cmd) { ax88796_bitset(BIT_DUMMY); switch(cmd){ case MAC_EEP_READ: ax88796_bitset(1); ax88796_bitset(1); ax88796_bitset(0); break; case MAC_EEP_WRITE: ax88796_bitset(1); ax88796_bitset(0); ax88796_bitset(1); break; case MAC_EEP_ERACE: ax88796_bitset(1); ax88796_bitset(1); ax88796_bitset(1); break; case MAC_EEP_EWEN: ax88796_bitset(1); ax88796_bitset(0); ax88796_bitset(0); break; case MAC_EEP_EWDS: ax88796_bitset(1); ax88796_bitset(0); ax88796_bitset(0); break; default: break; } } static void ax88796_eep_setaddr(u16 addr) { int i ; for( i = 7 ; i >= 0 ; i-- ) ax88796_bitset(addr & (1 << i)); } /* * Get data from EEPROM */ static u16 ax88796_eep_getdata(void) { ushort data = 0; int i; ax88796_bitget(); /* DUMMY */ for( i = 0 ; i < 16 ; i++ ){ data <<= 1; data |= ax88796_bitget(); } return data; } static void ax88796_mac_read(u8 *buff) { int i ; u16 data; u16 addr = 0; for( i = 0 ; i < 3; i++ ) { EECS_HIGH; EEDI_LOW; udelay(1000); /* READ COMMAND */ ax88796_eep_cmd(MAC_EEP_READ); /* ADDRESS */ ax88796_eep_setaddr(addr++); /* GET DATA */ data = ax88796_eep_getdata(); *buff++ = (uchar)(data & 0xff); *buff++ = (uchar)((data >> 8) & 0xff); EECLK_LOW; EEDI_LOW; EECS_LOW; } } int get_prom(u8* mac_addr, u8* base_addr) { u8 prom[32]; int i; ax88796_mac_read(prom); for (i = 0; i < 6; i++){ mac_addr[i] = prom[i]; } return 1; }