[u-boot.git] / net / eth.c

/*
 * (C) Copyright 2001-2010
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <command.h>
#include <net.h>
#include <miiphy.h>
#include <phy.h>

void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
{
	char *end;
	int i;

	for (i = 0; i < 6; ++i) {
		enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
		if (addr)
			addr = (*end) ? end + 1 : end;
	}
}

int eth_getenv_enetaddr(char *name, uchar *enetaddr)
{
	eth_parse_enetaddr(getenv(name), enetaddr);
	return is_valid_ether_addr(enetaddr);
}

int eth_setenv_enetaddr(char *name, const uchar *enetaddr)
{
	char buf[20];

	sprintf(buf, "%pM", enetaddr);

	return setenv(name, buf);
}

int eth_getenv_enetaddr_by_index(const char *base_name, int index,
				 uchar *enetaddr)
{
	char enetvar[32];
	sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
	return eth_getenv_enetaddr(enetvar, enetaddr);
}

static inline int eth_setenv_enetaddr_by_index(const char *base_name, int index,
				 uchar *enetaddr)
{
	char enetvar[32];
	sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
	return eth_setenv_enetaddr(enetvar, enetaddr);
}


static int eth_mac_skip(int index)
{
	char enetvar[15];
	char *skip_state;
	sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
	return ((skip_state = getenv(enetvar)) != NULL);
}

#ifdef CONFIG_RANDOM_MACADDR
void eth_random_enetaddr(uchar *enetaddr)
{
	uint32_t rval;

	srand(get_timer(0));

	rval = rand();
	enetaddr[0] = rval & 0xff;
	enetaddr[1] = (rval >> 8) & 0xff;
	enetaddr[2] = (rval >> 16) & 0xff;

	rval = rand();
	enetaddr[3] = rval & 0xff;
	enetaddr[4] = (rval >> 8) & 0xff;
	enetaddr[5] = (rval >> 16) & 0xff;

	/* make sure it's local and unicast */
	enetaddr[0] = (enetaddr[0] | 0x02) & ~0x01;
}
#endif

/*
 * CPU and board-specific Ethernet initializations.  Aliased function
 * signals caller to move on
 */
static int __def_eth_init(bd_t *bis)
{
	return -1;
}
int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));

#ifdef CONFIG_API
static struct {
	uchar data[PKTSIZE];
	int length;
} eth_rcv_bufs[PKTBUFSRX];

static unsigned int eth_rcv_current, eth_rcv_last;
#endif

static struct eth_device *eth_devices;
struct eth_device *eth_current;

struct eth_device *eth_get_dev_by_name(const char *devname)
{
	struct eth_device *dev, *target_dev;

	BUG_ON(devname == NULL);

	if (!eth_devices)
		return NULL;

	dev = eth_devices;
	target_dev = NULL;
	do {
		if (strcmp(devname, dev->name) == 0) {
			target_dev = dev;
			break;
		}
		dev = dev->next;
	} while (dev != eth_devices);

	return target_dev;
}

struct eth_device *eth_get_dev_by_index(int index)
{
	struct eth_device *dev, *target_dev;

	if (!eth_devices)
		return NULL;

	dev = eth_devices;
	target_dev = NULL;
	do {
		if (dev->index == index) {
			target_dev = dev;
			break;
		}
		dev = dev->next;
	} while (dev != eth_devices);

	return target_dev;
}

int eth_get_dev_index(void)
{
	if (!eth_current)
		return -1;

	return eth_current->index;
}

static void eth_current_changed(void)
{
	char *act = getenv("ethact");
	/* update current ethernet name */
	if (eth_current) {
		if (act == NULL || strcmp(act, eth_current->name) != 0)
			setenv("ethact", eth_current->name);
	}
	/*
	 * remove the variable completely if there is no active
	 * interface
	 */
	else if (act != NULL)
		setenv("ethact", NULL);
}

int eth_write_hwaddr(struct eth_device *dev, const char *base_name,
		   int eth_number)
{
	unsigned char env_enetaddr[6];
	int ret = 0;

	eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr);

	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
		if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
				memcmp(dev->enetaddr, env_enetaddr, 6)) {
			printf("\nWarning: %s MAC addresses don't match:\n",
				dev->name);
			printf("Address in SROM is         %pM\n",
				dev->enetaddr);
			printf("Address in environment is  %pM\n",
				env_enetaddr);
		}

		memcpy(dev->enetaddr, env_enetaddr, 6);
	} else if (is_valid_ether_addr(dev->enetaddr)) {
		eth_setenv_enetaddr_by_index(base_name, eth_number,
					     dev->enetaddr);
		printf("\nWarning: %s using MAC address from net device\n",
			dev->name);
	}

	if (dev->write_hwaddr &&
			!eth_mac_skip(eth_number)) {
		if (!is_valid_ether_addr(dev->enetaddr))
			return -1;

		ret = dev->write_hwaddr(dev);
	}

	return ret;
}

int eth_register(struct eth_device *dev)
{
	struct eth_device *d;
	static int index;

	assert(strlen(dev->name) < sizeof(dev->name));

	if (!eth_devices) {
		eth_current = eth_devices = dev;
		eth_current_changed();
	} else {
		for (d = eth_devices; d->next != eth_devices; d = d->next)
			;
		d->next = dev;
	}

	dev->state = ETH_STATE_INIT;
	dev->next  = eth_devices;
	dev->index = index++;

	return 0;
}

int eth_unregister(struct eth_device *dev)
{
	struct eth_device *cur;

	/* No device */
	if (!eth_devices)
		return -1;

	for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
	     cur = cur->next)
		;

	/* Device not found */
	if (cur->next != dev)
		return -1;

	cur->next = dev->next;

	if (eth_devices == dev)
		eth_devices = dev->next == eth_devices ? NULL : dev->next;

	if (eth_current == dev) {
		eth_current = eth_devices;
		eth_current_changed();
	}

	return 0;
}

static void eth_env_init(bd_t *bis)
{
	const char *s;

	if ((s = getenv("bootfile")) != NULL)
		copy_filename(BootFile, s, sizeof(BootFile));
}

int eth_initialize(bd_t *bis)
{
	int num_devices = 0;
	eth_devices = NULL;
	eth_current = NULL;

	bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) || defined(CONFIG_PHYLIB)
	miiphy_init();
#endif

#ifdef CONFIG_PHYLIB
	phy_init();
#endif

	eth_env_init(bis);

	/*
	 * If board-specific initialization exists, call it.
	 * If not, call a CPU-specific one
	 */
	if (board_eth_init != __def_eth_init) {
		if (board_eth_init(bis) < 0)
			printf("Board Net Initialization Failed\n");
	} else if (cpu_eth_init != __def_eth_init) {
		if (cpu_eth_init(bis) < 0)
			printf("CPU Net Initialization Failed\n");
	} else
		printf("Net Initialization Skipped\n");

	if (!eth_devices) {
		puts("No ethernet found.\n");
		bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
	} else {
		struct eth_device *dev = eth_devices;
		char *ethprime = getenv("ethprime");

		bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
		do {
			if (dev->index)
				puts(", ");

			printf("%s", dev->name);

			if (ethprime && strcmp(dev->name, ethprime) == 0) {
				eth_current = dev;
				puts(" [PRIME]");
			}

			if (strchr(dev->name, ' '))
				puts("\nWarning: eth device name has a space!"
					"\n");

			if (eth_write_hwaddr(dev, "eth", dev->index))
				puts("\nWarning: failed to set MAC address\n");

			dev = dev->next;
			num_devices++;
		} while (dev != eth_devices);

		eth_current_changed();
		putc('\n');
	}

	return num_devices;
}

#ifdef CONFIG_MCAST_TFTP
/* Multicast.
 * mcast_addr: multicast ipaddr from which multicast Mac is made
 * join: 1=join, 0=leave.
 */
int eth_mcast_join(IPaddr_t mcast_ip, u8 join)
{
	u8 mcast_mac[6];
	if (!eth_current || !eth_current->mcast)
		return -1;
	mcast_mac[5] = htonl(mcast_ip) & 0xff;
	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
	mcast_mac[2] = 0x5e;
	mcast_mac[1] = 0x0;
	mcast_mac[0] = 0x1;
	return eth_current->mcast(eth_current, mcast_mac, join);
}

/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
 * and this is the ethernet-crc method needed for TSEC -- and perhaps
 * some other adapter -- hash tables
 */
#define CRCPOLY_LE 0xedb88320
u32 ether_crc(size_t len, unsigned char const *p)
{
	int i;
	u32 crc;
	crc = ~0;
	while (len--) {
		crc ^= *p++;
		for (i = 0; i < 8; i++)
			crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	}
	/* an reverse the bits, cuz of way they arrive -- last-first */
	crc = (crc >> 16) | (crc << 16);
	crc = (crc >> 8 & 0x00ff00ff) | (crc << 8 & 0xff00ff00);
	crc = (crc >> 4 & 0x0f0f0f0f) | (crc << 4 & 0xf0f0f0f0);
	crc = (crc >> 2 & 0x33333333) | (crc << 2 & 0xcccccccc);
	crc = (crc >> 1 & 0x55555555) | (crc << 1 & 0xaaaaaaaa);
	return crc;
}

#endif


int eth_init(bd_t *bis)
{
	struct eth_device *old_current, *dev;

	if (!eth_current) {
		puts("No ethernet found.\n");
		return -1;
	}

	/* Sync environment with network devices */
	dev = eth_devices;
	do {
		uchar env_enetaddr[6];

		if (eth_getenv_enetaddr_by_index("eth", dev->index,
						 env_enetaddr))
			memcpy(dev->enetaddr, env_enetaddr, 6);

		dev = dev->next;
	} while (dev != eth_devices);

	old_current = eth_current;
	do {
		debug("Trying %s\n", eth_current->name);

		if (eth_current->init(eth_current, bis) >= 0) {
			eth_current->state = ETH_STATE_ACTIVE;

			return 0;
		}
		debug("FAIL\n");

		eth_try_another(0);
	} while (old_current != eth_current);

	return -1;
}

void eth_halt(void)
{
	if (!eth_current)
		return;

	eth_current->halt(eth_current);

	eth_current->state = ETH_STATE_PASSIVE;
}

int eth_send(void *packet, int length)
{
	if (!eth_current)
		return -1;

	return eth_current->send(eth_current, packet, length);
}

int eth_rx(void)
{
	if (!eth_current)
		return -1;

	return eth_current->recv(eth_current);
}

#ifdef CONFIG_API
static void eth_save_packet(void *packet, int length)
{
	char *p = packet;
	int i;

	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
		return;

	if (PKTSIZE < length)
		return;

	for (i = 0; i < length; i++)
		eth_rcv_bufs[eth_rcv_last].data[i] = p[i];

	eth_rcv_bufs[eth_rcv_last].length = length;
	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
}

int eth_receive(void *packet, int length)
{
	char *p = packet;
	void *pp = push_packet;
	int i;

	if (eth_rcv_current == eth_rcv_last) {
		push_packet = eth_save_packet;
		eth_rx();
		push_packet = pp;

		if (eth_rcv_current == eth_rcv_last)
			return -1;
	}

	length = min(eth_rcv_bufs[eth_rcv_current].length, length);

	for (i = 0; i < length; i++)
		p[i] = eth_rcv_bufs[eth_rcv_current].data[i];

	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	return length;
}
#endif /* CONFIG_API */

void eth_try_another(int first_restart)
{
	static struct eth_device *first_failed;
	char *ethrotate;

	/*
	 * Do not rotate between network interfaces when
	 * 'ethrotate' variable is set to 'no'.
	 */
	ethrotate = getenv("ethrotate");
	if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
		return;

	if (!eth_current)
		return;

	if (first_restart)
		first_failed = eth_current;

	eth_current = eth_current->next;

	eth_current_changed();

	if (first_failed == eth_current)
		NetRestartWrap = 1;
}

void eth_set_current(void)
{
	static char *act;
	static int  env_changed_id;
	struct eth_device *old_current;
	int	env_id;

	if (!eth_current)	/* XXX no current */
		return;

	env_id = get_env_id();
	if ((act == NULL) || (env_changed_id != env_id)) {
		act = getenv("ethact");
		env_changed_id = env_id;
	}
	if (act != NULL) {
		old_current = eth_current;
		do {
			if (strcmp(eth_current->name, act) == 0)
				return;
			eth_current = eth_current->next;
		} while (old_current != eth_current);
	}

	eth_current_changed();
}

char *eth_get_name(void)
{
	return eth_current ? eth_current->name : "unknown";
}
Commit	Line	Data
c609719b	1	/*
aba4b69d	2	* (C) Copyright 2001-2010
c609719b WD	3	* Wolfgang Denk, DENX Software Engineering, [email protected].
c609719b WD	4	*
1a459660	5	* SPDX-License-Identifier: GPL-2.0+
c609719b WD	6	*/
	7
	8	#include <common.h>
	9	#include <command.h>
	10	#include <net.h>
d9785c14	11	#include <miiphy.h>
5f184715	12	#include <phy.h>
c609719b	13
3f6e6993 MF	14	void eth_parse_enetaddr(const char addr, uchar enetaddr)
	15	{
	16	char *end;
	17	int i;
	18
	19	for (i = 0; i < 6; ++i) {
	20	enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
	21	if (addr)
	22	addr = (*end) ? end + 1 : end;
	23	}
	24	}
	25
	26	int eth_getenv_enetaddr(char name, uchar enetaddr)
	27	{
	28	eth_parse_enetaddr(getenv(name), enetaddr);
	29	return is_valid_ether_addr(enetaddr);
	30	}
	31
	32	int eth_setenv_enetaddr(char name, const uchar enetaddr)
	33	{
	34	char buf[20];
	35
	36	sprintf(buf, "%pM", enetaddr);
	37
	38	return setenv(name, buf);
	39	}
86848a74	40
7616e785 SG	41	int eth_getenv_enetaddr_by_index(const char *base_name, int index,
7616e785 SG	42	uchar *enetaddr)
86848a74 MF	43	{
86848a74 MF	44	char enetvar[32];
7616e785	45	sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
86848a74 MF	46	return eth_getenv_enetaddr(enetvar, enetaddr);
86848a74 MF	47	}
3f6e6993	48
154177e1	49	static inline int eth_setenv_enetaddr_by_index(const char *base_name, int index,
c88ef3c1 RH	50	uchar *enetaddr)
	51	{
	52	char enetvar[32];
	53	sprintf(enetvar, index ? "%s%daddr" : "%saddr", base_name, index);
	54	return eth_setenv_enetaddr(enetvar, enetaddr);
	55	}
	56
	57
ecee9324 BW	58	static int eth_mac_skip(int index)
	59	{
	60	char enetvar[15];
	61	char *skip_state;
	62	sprintf(enetvar, index ? "eth%dmacskip" : "ethmacskip", index);
	63	return ((skip_state = getenv(enetvar)) != NULL);
	64	}
	65
03c1b04f MW	66	#ifdef CONFIG_RANDOM_MACADDR
	67	void eth_random_enetaddr(uchar *enetaddr)
	68	{
	69	uint32_t rval;
	70
	71	srand(get_timer(0));
	72
	73	rval = rand();
	74	enetaddr[0] = rval & 0xff;
	75	enetaddr[1] = (rval >> 8) & 0xff;
	76	enetaddr[2] = (rval >> 16) & 0xff;
	77
	78	rval = rand();
	79	enetaddr[3] = rval & 0xff;
	80	enetaddr[4] = (rval >> 8) & 0xff;
	81	enetaddr[5] = (rval >> 16) & 0xff;
	82
	83	/* make sure it's local and unicast */
	84	enetaddr[0] = (enetaddr[0] \| 0x02) & ~0x01;
	85	}
	86	#endif
	87
dd35479a BW	88	/*
	89	* CPU and board-specific Ethernet initializations. Aliased function
	90	* signals caller to move on
	91	*/
	92	static int __def_eth_init(bd_t *bis)
	93	{
	94	return -1;
	95	}
f9a109b3 PT	96	int cpu_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
f9a109b3 PT	97	int board_eth_init(bd_t *bis) __attribute__((weak, alias("__def_eth_init")));
dd35479a	98
f85b6071	99	#ifdef CONFIG_API
f85b6071 RJ	100	static struct {
	101	uchar data[PKTSIZE];
	102	int length;
	103	} eth_rcv_bufs[PKTBUFSRX];
	104
66c7385a	105	static unsigned int eth_rcv_current, eth_rcv_last;
f85b6071 RJ	106	#endif
f85b6071 RJ	107
f8be7d65 JH	108	static struct eth_device *eth_devices;
f8be7d65 JH	109	struct eth_device *eth_current;
c609719b	110
d7fb9bcf	111	struct eth_device eth_get_dev_by_name(const char devname)
63ff004c MB	112	{
	113	struct eth_device dev, target_dev;
	114
7e7f903f HR	115	BUG_ON(devname == NULL);
7e7f903f HR	116
63ff004c MB	117	if (!eth_devices)
	118	return NULL;
	119
	120	dev = eth_devices;
	121	target_dev = NULL;
	122	do {
	123	if (strcmp(devname, dev->name) == 0) {
	124	target_dev = dev;
	125	break;
	126	}
	127	dev = dev->next;
	128	} while (dev != eth_devices);
	129
	130	return target_dev;
	131	}
	132
9e56986a AF	133	struct eth_device *eth_get_dev_by_index(int index)
	134	{
	135	struct eth_device dev, target_dev;
9e56986a AF	136
	137	if (!eth_devices)
	138	return NULL;
	139
	140	dev = eth_devices;
	141	target_dev = NULL;
	142	do {
fea7dcae	143	if (dev->index == index) {
9e56986a AF	144	target_dev = dev;
	145	break;
	146	}
	147	dev = dev->next;
9e56986a AF	148	} while (dev != eth_devices);
	149
	150	return target_dev;
	151	}
	152
66c7385a	153	int eth_get_dev_index(void)
c609719b	154	{
66c7385a	155	if (!eth_current)
fea7dcae	156	return -1;
c609719b	157
fea7dcae	158	return eth_current->index;
c609719b WD	159	}
c609719b WD	160
89d48367	161	static void eth_current_changed(void)
c609719b	162	{
e2a53458 MF	163	char *act = getenv("ethact");
	164	/* update current ethernet name */
	165	if (eth_current) {
	166	if (act == NULL \|\| strcmp(act, eth_current->name) != 0)
	167	setenv("ethact", eth_current->name);
89d48367	168	}
e2a53458 MF	169	/*
	170	* remove the variable completely if there is no active
	171	* interface
	172	*/
	173	else if (act != NULL)
	174	setenv("ethact", NULL);
89d48367 SG	175	}
89d48367 SG	176
7616e785 SG	177	int eth_write_hwaddr(struct eth_device dev, const char base_name,
	178	int eth_number)
	179	{
	180	unsigned char env_enetaddr[6];
	181	int ret = 0;
	182
69376644	183	eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr);
7616e785 SG	184
	185	if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {
	186	if (memcmp(dev->enetaddr, "\0\0\0\0\0\0", 6) &&
66c7385a	187	memcmp(dev->enetaddr, env_enetaddr, 6)) {
7616e785 SG	188	printf("\nWarning: %s MAC addresses don't match:\n",
	189	dev->name);
	190	printf("Address in SROM is %pM\n",
	191	dev->enetaddr);
	192	printf("Address in environment is %pM\n",
	193	env_enetaddr);
	194	}
	195
	196	memcpy(dev->enetaddr, env_enetaddr, 6);
c88ef3c1 RH	197	} else if (is_valid_ether_addr(dev->enetaddr)) {
	198	eth_setenv_enetaddr_by_index(base_name, eth_number,
	199	dev->enetaddr);
	200	printf("\nWarning: %s using MAC address from net device\n",
	201	dev->name);
7616e785 SG	202	}
	203
	204	if (dev->write_hwaddr &&
460f949f BT	205	!eth_mac_skip(eth_number)) {
	206	if (!is_valid_ether_addr(dev->enetaddr))
	207	return -1;
	208
7616e785	209	ret = dev->write_hwaddr(dev);
460f949f	210	}
7616e785 SG	211
	212	return ret;
	213	}
	214
89d48367 SG	215	int eth_register(struct eth_device *dev)
	216	{
	217	struct eth_device *d;
66c7385a	218	static int index;
58c583b6	219
f6add132	220	assert(strlen(dev->name) < sizeof(dev->name));
58c583b6	221
89d48367 SG	222	if (!eth_devices) {
	223	eth_current = eth_devices = dev;
	224	eth_current_changed();
c609719b	225	} else {
66c7385a	226	for (d = eth_devices; d->next != eth_devices; d = d->next)
aba4b69d	227	;
c609719b WD	228	d->next = dev;
	229	}
	230
	231	dev->state = ETH_STATE_INIT;
	232	dev->next = eth_devices;
fea7dcae	233	dev->index = index++;
c609719b WD	234
	235	return 0;
	236	}
	237
e7e982d6 VP	238	int eth_unregister(struct eth_device *dev)
	239	{
	240	struct eth_device *cur;
	241
	242	/* No device */
	243	if (!eth_devices)
	244	return -1;
	245
	246	for (cur = eth_devices; cur->next != eth_devices && cur->next != dev;
	247	cur = cur->next)
	248	;
	249
	250	/* Device not found */
	251	if (cur->next != dev)
	252	return -1;
	253
	254	cur->next = dev->next;
	255
	256	if (eth_devices == dev)
	257	eth_devices = dev->next == eth_devices ? NULL : dev->next;
	258
	259	if (eth_current == dev) {
	260	eth_current = eth_devices;
	261	eth_current_changed();
	262	}
	263
	264	return 0;
	265	}
	266
de30122b MF	267	static void eth_env_init(bd_t *bis)
	268	{
	269	const char *s;
	270
	271	if ((s = getenv("bootfile")) != NULL)
	272	copy_filename(BootFile, s, sizeof(BootFile));
	273	}
	274
c609719b WD	275	int eth_initialize(bd_t *bis)
c609719b WD	276	{
fea7dcae	277	int num_devices = 0;
c609719b WD	278	eth_devices = NULL;
	279	eth_current = NULL;
	280
770605e4	281	bootstage_mark(BOOTSTAGE_ID_NET_ETH_START);
27ee59af	282	#if defined(CONFIG_MII) \|\| defined(CONFIG_CMD_MII) \|\| defined(CONFIG_PHYLIB)
d9785c14 MB	283	miiphy_init();
d9785c14 MB	284	#endif
5f184715 AF	285
	286	#ifdef CONFIG_PHYLIB
	287	phy_init();
	288	#endif
	289
de30122b MF	290	eth_env_init(bis);
de30122b MF	291
8ad25bf8 BW	292	/*
	293	* If board-specific initialization exists, call it.
	294	* If not, call a CPU-specific one
	295	*/
	296	if (board_eth_init != __def_eth_init) {
	297	if (board_eth_init(bis) < 0)
	298	printf("Board Net Initialization Failed\n");
	299	} else if (cpu_eth_init != __def_eth_init) {
	300	if (cpu_eth_init(bis) < 0)
	301	printf("CPU Net Initialization Failed\n");
	302	} else
	303	printf("Net Initialization Skipped\n");
d9785c14	304
c609719b	305	if (!eth_devices) {
66c7385a	306	puts("No ethernet found.\n");
770605e4	307	bootstage_error(BOOTSTAGE_ID_NET_ETH_START);
c609719b WD	308	} else {
c609719b WD	309	struct eth_device *dev = eth_devices;
66c7385a	310	char *ethprime = getenv("ethprime");
c609719b	311
770605e4	312	bootstage_mark(BOOTSTAGE_ID_NET_ETH_INIT);
c609719b	313	do {
fea7dcae	314	if (dev->index)
66c7385a	315	puts(", ");
c609719b WD	316
	317	printf("%s", dev->name);
	318
66c7385a	319	if (ethprime && strcmp(dev->name, ethprime) == 0) {
c609719b	320	eth_current = dev;
66c7385a	321	puts(" [PRIME]");
c609719b WD	322	}
c609719b WD	323
1384f3bb	324	if (strchr(dev->name, ' '))
66c7385a JH	325	puts("\nWarning: eth device name has a space!"
66c7385a JH	326	"\n");
1384f3bb	327
fea7dcae	328	if (eth_write_hwaddr(dev, "eth", dev->index))
a9a730e0	329	puts("\nWarning: failed to set MAC address\n");
c609719b	330
c609719b	331	dev = dev->next;
fea7dcae	332	num_devices++;
66c7385a	333	} while (dev != eth_devices);
c609719b	334
89d48367	335	eth_current_changed();
66c7385a	336	putc('\n');
c609719b WD	337	}
c609719b WD	338
fea7dcae	339	return num_devices;
c609719b WD	340	}
c609719b WD	341
53a5c424 DU	342	#ifdef CONFIG_MCAST_TFTP
	343	/* Multicast.
	344	* mcast_addr: multicast ipaddr from which multicast Mac is made
85eb5caf	345	* join: 1=join, 0=leave.
53a5c424	346	*/
66c7385a	347	int eth_mcast_join(IPaddr_t mcast_ip, u8 join)
53a5c424	348	{
66c7385a	349	u8 mcast_mac[6];
85eb5caf	350	if (!eth_current \|\| !eth_current->mcast)
53a5c424 DU	351	return -1;
	352	mcast_mac[5] = htonl(mcast_ip) & 0xff;
	353	mcast_mac[4] = (htonl(mcast_ip)>>8) & 0xff;
	354	mcast_mac[3] = (htonl(mcast_ip)>>16) & 0x7f;
	355	mcast_mac[2] = 0x5e;
	356	mcast_mac[1] = 0x0;
	357	mcast_mac[0] = 0x1;
	358	return eth_current->mcast(eth_current, mcast_mac, join);
	359	}
	360
85eb5caf WD	361	/* the 'way' for ethernet-CRC-32. Spliced in from Linux lib/crc32.c
85eb5caf WD	362	* and this is the ethernet-crc method needed for TSEC -- and perhaps
53a5c424 DU	363	* some other adapter -- hash tables
	364	*/
	365	#define CRCPOLY_LE 0xedb88320
66c7385a	366	u32 ether_crc(size_t len, unsigned char const *p)
53a5c424 DU	367	{
	368	int i;
	369	u32 crc;
	370	crc = ~0;
	371	while (len--) {
	372	crc ^= *p++;
	373	for (i = 0; i < 8; i++)
	374	crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0);
	375	}
	376	/* an reverse the bits, cuz of way they arrive -- last-first */
	377	crc = (crc >> 16) \| (crc << 16);
	378	crc = (crc >> 8 & 0x00ff00ff) \| (crc << 8 & 0xff00ff00);
	379	crc = (crc >> 4 & 0x0f0f0f0f) \| (crc << 4 & 0xf0f0f0f0);
	380	crc = (crc >> 2 & 0x33333333) \| (crc << 2 & 0xcccccccc);
	381	crc = (crc >> 1 & 0x55555555) \| (crc << 1 & 0xaaaaaaaa);
	382	return crc;
	383	}
	384
	385	#endif
	386
c609719b WD	387
	388	int eth_init(bd_t *bis)
	389	{
86848a74	390	struct eth_device old_current, dev;
c609719b	391
6bc11388	392	if (!eth_current) {
66c7385a	393	puts("No ethernet found.\n");
505be87a	394	return -1;
6bc11388	395	}
c609719b	396
86848a74	397	/* Sync environment with network devices */
86848a74 MF	398	dev = eth_devices;
	399	do {
	400	uchar env_enetaddr[6];
	401
fea7dcae	402	if (eth_getenv_enetaddr_by_index("eth", dev->index,
7616e785	403	env_enetaddr))
86848a74 MF	404	memcpy(dev->enetaddr, env_enetaddr, 6);
86848a74 MF	405
86848a74 MF	406	dev = dev->next;
	407	} while (dev != eth_devices);
	408
c609719b WD	409	old_current = eth_current;
c609719b WD	410	do {
0ebf04c6	411	debug("Trying %s\n", eth_current->name);
c609719b	412
66c7385a	413	if (eth_current->init(eth_current, bis) >= 0) {
c609719b WD	414	eth_current->state = ETH_STATE_ACTIVE;
c609719b WD	415
505be87a	416	return 0;
c609719b	417	}
0ebf04c6	418	debug("FAIL\n");
c609719b WD	419
	420	eth_try_another(0);
	421	} while (old_current != eth_current);
	422
505be87a	423	return -1;
c609719b WD	424	}
	425
	426	void eth_halt(void)
	427	{
	428	if (!eth_current)
	429	return;
	430
	431	eth_current->halt(eth_current);
	432
	433	eth_current->state = ETH_STATE_PASSIVE;
	434	}
	435
db288a96	436	int eth_send(void *packet, int length)
c609719b WD	437	{
	438	if (!eth_current)
	439	return -1;
	440
	441	return eth_current->send(eth_current, packet, length);
	442	}
	443
	444	int eth_rx(void)
	445	{
	446	if (!eth_current)
	447	return -1;
	448
	449	return eth_current->recv(eth_current);
	450	}
	451
f85b6071	452	#ifdef CONFIG_API
db288a96	453	static void eth_save_packet(void *packet, int length)
f85b6071	454	{
db288a96	455	char *p = packet;
f85b6071 RJ	456	int i;
	457
	458	if ((eth_rcv_last+1) % PKTBUFSRX == eth_rcv_current)
	459	return;
	460
	461	if (PKTSIZE < length)
	462	return;
	463
	464	for (i = 0; i < length; i++)
	465	eth_rcv_bufs[eth_rcv_last].data[i] = p[i];
	466
	467	eth_rcv_bufs[eth_rcv_last].length = length;
	468	eth_rcv_last = (eth_rcv_last + 1) % PKTBUFSRX;
	469	}
	470
db288a96	471	int eth_receive(void *packet, int length)
f85b6071	472	{
db288a96	473	char *p = packet;
f85b6071 RJ	474	void *pp = push_packet;
	475	int i;
	476
	477	if (eth_rcv_current == eth_rcv_last) {
	478	push_packet = eth_save_packet;
	479	eth_rx();
	480	push_packet = pp;
	481
	482	if (eth_rcv_current == eth_rcv_last)
	483	return -1;
	484	}
	485
46c07bcf	486	length = min(eth_rcv_bufs[eth_rcv_current].length, length);
f85b6071 RJ	487
	488	for (i = 0; i < length; i++)
	489	p[i] = eth_rcv_bufs[eth_rcv_current].data[i];
	490
	491	eth_rcv_current = (eth_rcv_current + 1) % PKTBUFSRX;
	492	return length;
	493	}
	494	#endif /* CONFIG_API */
	495
c609719b WD	496	void eth_try_another(int first_restart)
c609719b WD	497	{
66c7385a	498	static struct eth_device *first_failed;
c650e1be	499	char *ethrotate;
e1692577 MF	500
	501	/*
	502	* Do not rotate between network interfaces when
	503	* 'ethrotate' variable is set to 'no'.
	504	*/
66c7385a JH	505	ethrotate = getenv("ethrotate");
66c7385a JH	506	if ((ethrotate != NULL) && (strcmp(ethrotate, "no") == 0))
e1692577	507	return;
c609719b WD	508
	509	if (!eth_current)
	510	return;
	511
66c7385a	512	if (first_restart)
c609719b	513	first_failed = eth_current;
c609719b WD	514
	515	eth_current = eth_current->next;
	516
89d48367	517	eth_current_changed();
a3d991bd	518
66c7385a	519	if (first_failed == eth_current)
c609719b	520	NetRestartWrap = 1;
c609719b WD	521	}
c609719b WD	522
a3d991bd WD	523	void eth_set_current(void)
a3d991bd WD	524	{
66c7385a JH	525	static char *act;
	526	static int env_changed_id;
	527	struct eth_device *old_current;
2f70c49e	528	int env_id;
a3d991bd WD	529
	530	if (!eth_current) /* XXX no current */
	531	return;
	532
2f70c49e HS	533	env_id = get_env_id();
	534	if ((act == NULL) \|\| (env_changed_id != env_id)) {
	535	act = getenv("ethact");
	536	env_changed_id = env_id;
	537	}
a3d991bd WD	538	if (act != NULL) {
	539	old_current = eth_current;
	540	do {
	541	if (strcmp(eth_current->name, act) == 0)
	542	return;
	543	eth_current = eth_current->next;
	544	} while (old_current != eth_current);
	545	}
	546
89d48367	547	eth_current_changed();
a3d991bd	548	}
a3d991bd	549
66c7385a	550	char *eth_get_name(void)
5bb226e8	551	{
66c7385a	552	return eth_current ? eth_current->name : "unknown";
5bb226e8	553	}