2 * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
3 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #ifdef CONFIG_MCF547x_8x
30 #include <asm/fsl_mcdmafec.h>
34 #include <asm/immap.h>
36 DECLARE_GLOBAL_DATA_PTR;
38 #if defined(CONFIG_CMD_NET)
42 /*extern int fecpin_setclear(struct eth_device *dev, int setclear);*/
44 #if defined(CONFIG_SYS_DISCOVER_PHY) || defined(CONFIG_CMD_MII)
47 /* Make MII read/write commands for the FEC. */
48 #define mk_mii_read(ADDR, REG) (0x60020000 | ((ADDR << 23) | \
50 #define mk_mii_write(ADDR, REG, VAL) (0x50020000 | ((ADDR << 23) | \
51 (REG & 0x1f) << 18) | (VAL & 0xffff))
53 #ifndef CONFIG_SYS_UNSPEC_PHYID
54 # define CONFIG_SYS_UNSPEC_PHYID 0
56 #ifndef CONFIG_SYS_UNSPEC_STRID
57 # define CONFIG_SYS_UNSPEC_STRID 0
60 #ifdef CONFIG_MCF547x_8x
61 typedef struct fec_info_dma FEC_INFO_T;
62 #define FEC_T fecdma_t
64 typedef struct fec_info_s FEC_INFO_T;
68 typedef struct phy_info_struct {
73 phy_info_t phyinfo[] = {
74 {0x0022561B, "AMD79C784VC"}, /* AMD 79C784VC */
75 {0x00406322, "BCM5222"}, /* Broadcom 5222 */
76 {0x02a80150, "Intel82555"}, /* Intel 82555 */
77 {0x0016f870, "LSI80225"}, /* LSI 80225 */
78 {0x0016f880, "LSI80225/B"}, /* LSI 80225/B */
79 {0x78100000, "LXT970"}, /* LXT970 */
80 {0x001378e0, "LXT971"}, /* LXT971 and 972 */
81 {0x00221619, "KS8721BL"}, /* Micrel KS8721BL/SL */
82 {0x00221512, "KSZ8041NL"}, /* Micrel KSZ8041NL */
83 {0x20005CE1, "N83640"}, /* National 83640 */
84 {0x20005C90, "N83848"}, /* National 83848 */
85 {0x20005CA2, "N83849"}, /* National 83849 */
86 {0x01814400, "QS6612"}, /* QS6612 */
87 #if defined(CONFIG_SYS_UNSPEC_PHYID) && defined(CONFIG_SYS_UNSPEC_STRID)
88 {CONFIG_SYS_UNSPEC_PHYID, CONFIG_SYS_UNSPEC_STRID},
94 * mii_init -- Initialize the MII for MII command without ethernet
95 * This function is a subset of eth_init
97 void mii_reset(FEC_INFO_T *info)
99 volatile FEC_T *fecp = (FEC_T *) (info->miibase);
102 fecp->ecr = FEC_ECR_RESET;
104 for (i = 0; (fecp->ecr & FEC_ECR_RESET) && (i < FEC_RESET_DELAY); ++i) {
107 if (i == FEC_RESET_DELAY)
108 printf("FEC_RESET_DELAY timeout\n");
111 /* send command to phy using mii, wait for result */
112 uint mii_send(uint mii_cmd)
116 struct eth_device *dev;
120 /* retrieve from register structure */
124 ep = (FEC_T *) info->miibase;
126 ep->mmfr = mii_cmd; /* command to phy */
128 /* wait for mii complete */
129 while (!(ep->eir & FEC_EIR_MII) && (j < MCFFEC_TOUT_LOOP)) {
133 if (j >= MCFFEC_TOUT_LOOP) {
134 printf("MII not complete\n");
138 mii_reply = ep->mmfr; /* result from phy */
139 ep->eir = FEC_EIR_MII; /* clear MII complete */
141 printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n",
142 __FILE__, __LINE__, __FUNCTION__, mii_cmd, mii_reply);
145 return (mii_reply & 0xffff); /* data read from phy */
147 #endif /* CONFIG_SYS_DISCOVER_PHY || (CONFIG_MII) */
149 #if defined(CONFIG_SYS_DISCOVER_PHY)
150 int mii_discover_phy(struct eth_device *dev)
152 #define MAX_PHY_PASSES 11
153 FEC_INFO_T *info = dev->priv;
158 if (info->phyname_init)
159 return info->phy_addr;
161 phyaddr = -1; /* didn't find a PHY yet */
162 for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
164 /* PHY may need more time to recover from reset.
165 * The LXT970 needs 50ms typical, no maximum is
166 * specified, so wait 10ms before try again.
167 * With 11 passes this gives it 100ms to wake up.
169 udelay(10000); /* wait 10ms */
172 for (phyno = 0; phyno < 32 && phyaddr < 0; ++phyno) {
174 phytype = mii_send(mk_mii_read(phyno, MII_PHYSID1));
176 printf("PHY type 0x%x pass %d type\n", phytype, pass);
178 if (phytype == 0xffff)
183 mii_send(mk_mii_read(phyno, MII_PHYSID2));
186 printf("PHY @ 0x%x pass %d\n", phyno, pass);
189 for (i = 0; (i < (sizeof(phyinfo) / sizeof(phy_info_t)))
190 && (phyinfo[i].phyid != 0); i++) {
191 if (phyinfo[i].phyid == phytype) {
193 printf("phyid %x - %s\n",
197 strcpy(info->phy_name, phyinfo[i].strid);
198 info->phyname_init = 1;
206 printf("0x%08x\n", phytype);
208 strcpy(info->phy_name, "unknown");
209 info->phyname_init = 1;
216 printf("No PHY device found.\n");
220 #endif /* CONFIG_SYS_DISCOVER_PHY */
222 void mii_init(void) __attribute__((weak,alias("__mii_init")));
224 void __mii_init(void)
227 volatile FEC_T *fecp;
228 struct eth_device *dev;
229 int miispd = 0, i = 0;
233 /* retrieve from register structure */
237 fecp = (FEC_T *) info->miibase;
239 fecpin_setclear(dev, 1);
243 /* We use strictly polling mode only */
246 /* Clear any pending interrupt */
247 fecp->eir = 0xffffffff;
250 miispd = (gd->bus_clk / 1000000) / 5;
251 fecp->mscr = miispd << 1;
253 info->phy_addr = mii_discover_phy(dev);
255 while (i < MCFFEC_TOUT_LOOP) {
258 /* Read PHY control register */
259 miiphy_read(dev->name, info->phy_addr, MII_BMCR, &status);
261 /* If phy set to autonegotiate, wait for autonegotiation done,
262 * if phy is not autonegotiating, just wait for link up.
264 if ((status & BMCR_ANENABLE) == BMCR_ANENABLE) {
265 linkgood = (BMSR_ANEGCOMPLETE | BMSR_LSTATUS);
267 linkgood = BMSR_LSTATUS;
269 /* Read PHY status register */
270 miiphy_read(dev->name, info->phy_addr, MII_BMSR, &status);
271 if ((status & linkgood) == linkgood)
276 if (i >= MCFFEC_TOUT_LOOP) {
277 printf("Link UP timeout\n");
280 /* adapt to the duplex and speed settings of the phy */
281 info->dup_spd = miiphy_duplex(dev->name, info->phy_addr) << 16;
282 info->dup_spd |= miiphy_speed(dev->name, info->phy_addr);
286 * Read and write a MII PHY register, routines used by MII Utilities
288 * FIXME: These routines are expected to return 0 on success, but mii_send
289 * does _not_ return an error code. Maybe 0xFFFF means error, i.e.
290 * no PHY connected...
291 * For now always return 0.
292 * FIXME: These routines only work after calling eth_init() at least once!
293 * Otherwise they hang in mii_send() !!! Sorry!
296 int mcffec_miiphy_read(const char *devname, unsigned char addr, unsigned char reg,
297 unsigned short *value)
299 short rdreg; /* register working value */
302 printf("miiphy_read(0x%x) @ 0x%x = ", reg, addr);
304 rdreg = mii_send(mk_mii_read(addr, reg));
309 printf("0x%04x\n", *value);
315 int mcffec_miiphy_write(const char *devname, unsigned char addr, unsigned char reg,
316 unsigned short value)
318 short rdreg; /* register working value */
321 printf("miiphy_write(0x%x) @ 0x%x = ", reg, addr);
324 rdreg = mii_send(mk_mii_write(addr, reg, value));
327 printf("0x%04x\n", value);
333 #endif /* CONFIG_CMD_NET */