upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/drivers/net/tsec.c

688 lines
18 KiB

/*
* Freescale Three Speed Ethernet Controller driver
*
* This software may be used and distributed according to the
* terms of the GNU Public License, Version 2, incorporated
* herein by reference.
*
* Copyright 2004-2011, 2013 Freescale Semiconductor, Inc.
* (C) Copyright 2003, Motorola, Inc.
* author Andy Fleming
*
*/
#include <config.h>
#include <common.h>
#include <malloc.h>
#include <net.h>
#include <command.h>
#include <tsec.h>
#include <fsl_mdio.h>
#include <asm/errno.h>
#include <asm/processor.h>
DECLARE_GLOBAL_DATA_PTR;
#define TX_BUF_CNT 2
static uint rx_idx; /* index of the current RX buffer */
static uint tx_idx; /* index of the current TX buffer */
#ifdef __GNUC__
static struct txbd8 __iomem txbd[TX_BUF_CNT] __aligned(8);
static struct rxbd8 __iomem rxbd[PKTBUFSRX] __aligned(8);
#else
#error "rtx must be 64-bit aligned"
#endif
static int tsec_send(struct eth_device *dev, void *packet, int length);
/* Default initializations for TSEC controllers. */
static struct tsec_info_struct tsec_info[] = {
#ifdef CONFIG_TSEC1
STD_TSEC_INFO(1), /* TSEC1 */
#endif
#ifdef CONFIG_TSEC2
STD_TSEC_INFO(2), /* TSEC2 */
#endif
#ifdef CONFIG_MPC85XX_FEC
{
.regs = TSEC_GET_REGS(2, 0x2000),
.devname = CONFIG_MPC85XX_FEC_NAME,
.phyaddr = FEC_PHY_ADDR,
.flags = FEC_FLAGS,
.mii_devname = DEFAULT_MII_NAME
}, /* FEC */
#endif
#ifdef CONFIG_TSEC3
STD_TSEC_INFO(3), /* TSEC3 */
#endif
#ifdef CONFIG_TSEC4
STD_TSEC_INFO(4), /* TSEC4 */
#endif
};
#define TBIANA_SETTINGS ( \
TBIANA_ASYMMETRIC_PAUSE \
| TBIANA_SYMMETRIC_PAUSE \
| TBIANA_FULL_DUPLEX \
)
/* By default force the TBI PHY into 1000Mbps full duplex when in SGMII mode */
#ifndef CONFIG_TSEC_TBICR_SETTINGS
#define CONFIG_TSEC_TBICR_SETTINGS ( \
TBICR_PHY_RESET \
| TBICR_ANEG_ENABLE \
| TBICR_FULL_DUPLEX \
| TBICR_SPEED1_SET \
)
#endif /* CONFIG_TSEC_TBICR_SETTINGS */
/* Configure the TBI for SGMII operation */
static void tsec_configure_serdes(struct tsec_private *priv)
{
/* Access TBI PHY registers at given TSEC register offset as opposed
* to the register offset used for external PHY accesses */
tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
0, TBI_ANA, TBIANA_SETTINGS);
tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
0, TBI_TBICON, TBICON_CLK_SELECT);
tsec_local_mdio_write(priv->phyregs_sgmii, in_be32(&priv->regs->tbipa),
0, TBI_CR, CONFIG_TSEC_TBICR_SETTINGS);
}
#ifdef CONFIG_MCAST_TFTP
/* CREDITS: linux gianfar driver, slightly adjusted... thanx. */
/* Set the appropriate hash bit for the given addr */
/* The algorithm works like so:
* 1) Take the Destination Address (ie the multicast address), and
* do a CRC on it (little endian), and reverse the bits of the
* result.
* 2) Use the 8 most significant bits as a hash into a 256-entry
* table. The table is controlled through 8 32-bit registers:
* gaddr0-7. gaddr0's MSB is entry 0, and gaddr7's LSB is entry
* 255. This means that the 3 most significant bits in the
* hash index which gaddr register to use, and the 5 other bits
* indicate which bit (assuming an IBM numbering scheme, which
* for PowerPC (tm) is usually the case) in the register holds
* the entry. */
static int
tsec_mcast_addr(struct eth_device *dev, const u8 *mcast_mac, u8 set)
{
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
u32 result, value;
u8 whichbit, whichreg;
result = ether_crc(MAC_ADDR_LEN, mcast_mac);
whichbit = (result >> 24) & 0x1f; /* the 5 LSB = which bit to set */
whichreg = result >> 29; /* the 3 MSB = which reg to set it in */
value = 1 << (31-whichbit);
if (set)
setbits_be32(&regs->hash.gaddr0 + whichreg, value);
else
clrbits_be32(&regs->hash.gaddr0 + whichreg, value);
return 0;
}
#endif /* Multicast TFTP ? */
/* Initialized required registers to appropriate values, zeroing
* those we don't care about (unless zero is bad, in which case,
* choose a more appropriate value)
*/
static void init_registers(struct tsec __iomem *regs)
{
/* Clear IEVENT */
out_be32(&regs->ievent, IEVENT_INIT_CLEAR);
out_be32(&regs->imask, IMASK_INIT_CLEAR);
out_be32(&regs->hash.iaddr0, 0);
out_be32(&regs->hash.iaddr1, 0);
out_be32(&regs->hash.iaddr2, 0);
out_be32(&regs->hash.iaddr3, 0);
out_be32(&regs->hash.iaddr4, 0);
out_be32(&regs->hash.iaddr5, 0);
out_be32(&regs->hash.iaddr6, 0);
out_be32(&regs->hash.iaddr7, 0);
out_be32(&regs->hash.gaddr0, 0);
out_be32(&regs->hash.gaddr1, 0);
out_be32(&regs->hash.gaddr2, 0);
out_be32(&regs->hash.gaddr3, 0);
out_be32(&regs->hash.gaddr4, 0);
out_be32(&regs->hash.gaddr5, 0);
out_be32(&regs->hash.gaddr6, 0);
out_be32(&regs->hash.gaddr7, 0);
out_be32(&regs->rctrl, 0x00000000);
/* Init RMON mib registers */
memset((void *)&regs->rmon, 0, sizeof(regs->rmon));
out_be32(&regs->rmon.cam1, 0xffffffff);
out_be32(&regs->rmon.cam2, 0xffffffff);
out_be32(&regs->mrblr, MRBLR_INIT_SETTINGS);
out_be32(&regs->minflr, MINFLR_INIT_SETTINGS);
out_be32(&regs->attr, ATTR_INIT_SETTINGS);
out_be32(&regs->attreli, ATTRELI_INIT_SETTINGS);
}
/* Configure maccfg2 based on negotiated speed and duplex
* reported by PHY handling code
*/
static void adjust_link(struct tsec_private *priv, struct phy_device *phydev)
{
struct tsec __iomem *regs = priv->regs;
u32 ecntrl, maccfg2;
if (!phydev->link) {
printf("%s: No link.\n", phydev->dev->name);
return;
}
/* clear all bits relative with interface mode */
ecntrl = in_be32(&regs->ecntrl);
ecntrl &= ~ECNTRL_R100;
maccfg2 = in_be32(&regs->maccfg2);
maccfg2 &= ~(MACCFG2_IF | MACCFG2_FULL_DUPLEX);
if (phydev->duplex)
maccfg2 |= MACCFG2_FULL_DUPLEX;
switch (phydev->speed) {
case 1000:
maccfg2 |= MACCFG2_GMII;
break;
case 100:
case 10:
maccfg2 |= MACCFG2_MII;
/* Set R100 bit in all modes although
* it is only used in RGMII mode
*/
if (phydev->speed == 100)
ecntrl |= ECNTRL_R100;
break;
default:
printf("%s: Speed was bad\n", phydev->dev->name);
break;
}
out_be32(&regs->ecntrl, ecntrl);
out_be32(&regs->maccfg2, maccfg2);
printf("Speed: %d, %s duplex%s\n", phydev->speed,
(phydev->duplex) ? "full" : "half",
(phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
}
#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
/*
* When MACCFG1[Rx_EN] is enabled during system boot as part
* of the eTSEC port initialization sequence,
* the eTSEC Rx logic may not be properly initialized.
*/
void redundant_init(struct eth_device *dev)
{
struct tsec_private *priv = dev->priv;
struct tsec __iomem *regs = priv->regs;
uint t, count = 0;
int fail = 1;
static const u8 pkt[] = {
0x00, 0x1e, 0x4f, 0x12, 0xcb, 0x2c, 0x00, 0x25,
0x64, 0xbb, 0xd1, 0xab, 0x08, 0x00, 0x45, 0x00,
0x00, 0x5c, 0xdd, 0x22, 0x00, 0x00, 0x80, 0x01,
0x1f, 0x71, 0x0a, 0xc1, 0x14, 0x22, 0x0a, 0xc1,
0x14, 0x6a, 0x08, 0x00, 0xef, 0x7e, 0x02, 0x00,
0x94, 0x05, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e,
0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,
0x77, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70,
0x71, 0x72};
/* Enable promiscuous mode */
setbits_be32(&regs->rctrl, 0x8);
/* Enable loopback mode */
setbits_be32(&regs->maccfg1, MACCFG1_LOOPBACK);
/* Enable transmit and receive */
setbits_be32(&regs->maccfg1, MACCFG1_RX_EN | MACCFG1_TX_EN);
/* Tell the DMA it is clear to go */
setbits_be32(&regs->dmactrl, DMACTRL_INIT_SETTINGS);
out_be32(&regs->tstat, TSTAT_CLEAR_THALT);
out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
clrbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
do {
uint16_t status;
tsec_send(dev, (void *)pkt, sizeof(pkt));
/* Wait for buffer to be received */
for (t = 0; in_be16(&rxbd[rx_idx].status) & RXBD_EMPTY; t++) {
if (t >= 10 * TOUT_LOOP) {
printf("%s: tsec: rx error\n", dev->name);
break;
}
}
if (!memcmp(pkt, (void *)NetRxPackets[rx_idx], sizeof(pkt)))
fail = 0;
out_be16(&rxbd[rx_idx].length, 0);
status = RXBD_EMPTY;
if ((rx_idx + 1) == PKTBUFSRX)
status |= RXBD_WRAP;
out_be16(&rxbd[rx_idx].status, status);
rx_idx = (rx_idx + 1) % PKTBUFSRX;
if (in_be32(&regs->ievent) & IEVENT_BSY) {
out_be32(&regs->ievent, IEVENT_BSY);
out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
}
if (fail) {
printf("loopback recv packet error!\n");
clrbits_be32(&regs->maccfg1, MACCFG1_RX_EN);
udelay(1000);
setbits_be32(&regs->maccfg1, MACCFG1_RX_EN);
}
} while ((count++ < 4) && (fail == 1));
if (fail)
panic("eTSEC init fail!\n");
/* Disable promiscuous mode */
clrbits_be32(&regs->rctrl, 0x8);
/* Disable loopback mode */
clrbits_be32(&regs->maccfg1, MACCFG1_LOOPBACK);
}
#endif
/* Set up the buffers and their descriptors, and bring up the
* interface
*/
static void startup_tsec(struct eth_device *dev)
{
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
uint16_t status;
int i;
/* reset the indices to zero */
rx_idx = 0;
tx_idx = 0;
#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
uint svr;
#endif
/* Point to the buffer descriptors */
out_be32(&regs->tbase, (u32)&txbd[0]);
out_be32(&regs->rbase, (u32)&rxbd[0]);
/* Initialize the Rx Buffer descriptors */
for (i = 0; i < PKTBUFSRX; i++) {
out_be16(&rxbd[i].status, RXBD_EMPTY);
out_be16(&rxbd[i].length, 0);
out_be32(&rxbd[i].bufptr, (u32)NetRxPackets[i]);
}
status = in_be16(&rxbd[PKTBUFSRX - 1].status);
out_be16(&rxbd[PKTBUFSRX - 1].status, status | RXBD_WRAP);
/* Initialize the TX Buffer Descriptors */
for (i = 0; i < TX_BUF_CNT; i++) {
out_be16(&txbd[i].status, 0);
out_be16(&txbd[i].length, 0);
out_be32(&txbd[i].bufptr, 0);
}
status = in_be16(&txbd[TX_BUF_CNT - 1].status);
out_be16(&txbd[TX_BUF_CNT - 1].status, status | TXBD_WRAP);
#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_ETSEC129
svr = get_svr();
if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0))
redundant_init(dev);
#endif
/* Enable Transmit and Receive */
setbits_be32(&regs->maccfg1, MACCFG1_RX_EN | MACCFG1_TX_EN);
/* Tell the DMA it is clear to go */
setbits_be32(&regs->dmactrl, DMACTRL_INIT_SETTINGS);
out_be32(&regs->tstat, TSTAT_CLEAR_THALT);
out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
clrbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
}
/* This returns the status bits of the device. The return value
* is never checked, and this is what the 8260 driver did, so we
* do the same. Presumably, this would be zero if there were no
* errors
*/
static int tsec_send(struct eth_device *dev, void *packet, int length)
{
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
uint16_t status;
int result = 0;
int i;
/* Find an empty buffer descriptor */
for (i = 0; in_be16(&txbd[tx_idx].status) & TXBD_READY; i++) {
if (i >= TOUT_LOOP) {
debug("%s: tsec: tx buffers full\n", dev->name);
return result;
}
}
out_be32(&txbd[tx_idx].bufptr, (u32)packet);
out_be16(&txbd[tx_idx].length, length);
status = in_be16(&txbd[tx_idx].status);
out_be16(&txbd[tx_idx].status, status |
(TXBD_READY | TXBD_LAST | TXBD_CRC | TXBD_INTERRUPT));
/* Tell the DMA to go */
out_be32(&regs->tstat, TSTAT_CLEAR_THALT);
/* Wait for buffer to be transmitted */
for (i = 0; in_be16(&txbd[tx_idx].status) & TXBD_READY; i++) {
if (i >= TOUT_LOOP) {
debug("%s: tsec: tx error\n", dev->name);
return result;
}
}
tx_idx = (tx_idx + 1) % TX_BUF_CNT;
result = in_be16(&txbd[tx_idx].status) & TXBD_STATS;
return result;
}
static int tsec_recv(struct eth_device *dev)
{
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
while (!(in_be16(&rxbd[rx_idx].status) & RXBD_EMPTY)) {
int length = in_be16(&rxbd[rx_idx].length);
uint16_t status = in_be16(&rxbd[rx_idx].status);
/* Send the packet up if there were no errors */
if (!(status & RXBD_STATS))
NetReceive(NetRxPackets[rx_idx], length - 4);
else
printf("Got error %x\n", (status & RXBD_STATS));
out_be16(&rxbd[rx_idx].length, 0);
status = RXBD_EMPTY;
/* Set the wrap bit if this is the last element in the list */
if ((rx_idx + 1) == PKTBUFSRX)
status |= RXBD_WRAP;
out_be16(&rxbd[rx_idx].status, status);
rx_idx = (rx_idx + 1) % PKTBUFSRX;
}
if (in_be32(&regs->ievent) & IEVENT_BSY) {
out_be32(&regs->ievent, IEVENT_BSY);
out_be32(&regs->rstat, RSTAT_CLEAR_RHALT);
}
return -1;
}
/* Stop the interface */
static void tsec_halt(struct eth_device *dev)
{
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
clrbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
setbits_be32(&regs->dmactrl, DMACTRL_GRS | DMACTRL_GTS);
while ((in_be32(&regs->ievent) & (IEVENT_GRSC | IEVENT_GTSC))
!= (IEVENT_GRSC | IEVENT_GTSC))
;
clrbits_be32(&regs->maccfg1, MACCFG1_TX_EN | MACCFG1_RX_EN);
/* Shut down the PHY, as needed */
phy_shutdown(priv->phydev);
}
/* Initializes data structures and registers for the controller,
* and brings the interface up. Returns the link status, meaning
* that it returns success if the link is up, failure otherwise.
* This allows u-boot to find the first active controller.
*/
static int tsec_init(struct eth_device *dev, bd_t * bd)
{
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct tsec __iomem *regs = priv->regs;
u32 tempval;
int ret;
/* Make sure the controller is stopped */
tsec_halt(dev);
/* Init MACCFG2. Defaults to GMII */
out_be32(&regs->maccfg2, MACCFG2_INIT_SETTINGS);
/* Init ECNTRL */
out_be32(&regs->ecntrl, ECNTRL_INIT_SETTINGS);
/* Copy the station address into the address registers.
* For a station address of 0x12345678ABCD in transmission
* order (BE), MACnADDR1 is set to 0xCDAB7856 and
* MACnADDR2 is set to 0x34120000.
*/
tempval = (dev->enetaddr[5] << 24) | (dev->enetaddr[4] << 16) |
(dev->enetaddr[3] << 8) | dev->enetaddr[2];
out_be32(&regs->macstnaddr1, tempval);
tempval = (dev->enetaddr[1] << 24) | (dev->enetaddr[0] << 16);
out_be32(&regs->macstnaddr2, tempval);
/* Clear out (for the most part) the other registers */
init_registers(regs);
/* Ready the device for tx/rx */
startup_tsec(dev);
/* Start up the PHY */
ret = phy_startup(priv->phydev);
if (ret) {
printf("Could not initialize PHY %s\n",
priv->phydev->dev->name);
return ret;
}
adjust_link(priv, priv->phydev);
/* If there's no link, fail */
return priv->phydev->link ? 0 : -1;
}
static phy_interface_t tsec_get_interface(struct tsec_private *priv)
{
struct tsec __iomem *regs = priv->regs;
u32 ecntrl;
ecntrl = in_be32(&regs->ecntrl);
if (ecntrl & ECNTRL_SGMII_MODE)
return PHY_INTERFACE_MODE_SGMII;
if (ecntrl & ECNTRL_TBI_MODE) {
if (ecntrl & ECNTRL_REDUCED_MODE)
return PHY_INTERFACE_MODE_RTBI;
else
return PHY_INTERFACE_MODE_TBI;
}
if (ecntrl & ECNTRL_REDUCED_MODE) {
if (ecntrl & ECNTRL_REDUCED_MII_MODE)
return PHY_INTERFACE_MODE_RMII;
else {
phy_interface_t interface = priv->interface;
/*
* This isn't autodetected, so it must
* be set by the platform code.
*/
if ((interface == PHY_INTERFACE_MODE_RGMII_ID) ||
(interface == PHY_INTERFACE_MODE_RGMII_TXID) ||
(interface == PHY_INTERFACE_MODE_RGMII_RXID))
return interface;
return PHY_INTERFACE_MODE_RGMII;
}
}
if (priv->flags & TSEC_GIGABIT)
return PHY_INTERFACE_MODE_GMII;
return PHY_INTERFACE_MODE_MII;
}
/* Discover which PHY is attached to the device, and configure it
* properly. If the PHY is not recognized, then return 0
* (failure). Otherwise, return 1
*/
static int init_phy(struct eth_device *dev)
{
struct tsec_private *priv = (struct tsec_private *)dev->priv;
struct phy_device *phydev;
struct tsec __iomem *regs = priv->regs;
u32 supported = (SUPPORTED_10baseT_Half |
SUPPORTED_10baseT_Full |
SUPPORTED_100baseT_Half |
SUPPORTED_100baseT_Full);
if (priv->flags & TSEC_GIGABIT)
supported |= SUPPORTED_1000baseT_Full;
/* Assign a Physical address to the TBI */
out_be32(&regs->tbipa, CONFIG_SYS_TBIPA_VALUE);
priv->interface = tsec_get_interface(priv);
if (priv->interface == PHY_INTERFACE_MODE_SGMII)
tsec_configure_serdes(priv);
phydev = phy_connect(priv->bus, priv->phyaddr, dev, priv->interface);
phydev->supported &= supported;
phydev->advertising = phydev->supported;
priv->phydev = phydev;
phy_config(phydev);
return 1;
}
/* Initialize device structure. Returns success if PHY
* initialization succeeded (i.e. if it recognizes the PHY)
*/
static int tsec_initialize(bd_t *bis, struct tsec_info_struct *tsec_info)
{
struct eth_device *dev;
int i;
struct tsec_private *priv;
dev = (struct eth_device *)malloc(sizeof *dev);
if (NULL == dev)
return 0;
memset(dev, 0, sizeof *dev);
priv = (struct tsec_private *)malloc(sizeof(*priv));
if (NULL == priv)
return 0;
priv->regs = tsec_info->regs;
priv->phyregs_sgmii = tsec_info->miiregs_sgmii;
priv->phyaddr = tsec_info->phyaddr;
priv->flags = tsec_info->flags;
sprintf(dev->name, tsec_info->devname);
priv->interface = tsec_info->interface;
priv->bus = miiphy_get_dev_by_name(tsec_info->mii_devname);
dev->iobase = 0;
dev->priv = priv;
dev->init = tsec_init;
dev->halt = tsec_halt;
dev->send = tsec_send;
dev->recv = tsec_recv;
#ifdef CONFIG_MCAST_TFTP
dev->mcast = tsec_mcast_addr;
#endif
/* Tell u-boot to get the addr from the env */
for (i = 0; i < 6; i++)
dev->enetaddr[i] = 0;
eth_register(dev);
/* Reset the MAC */
setbits_be32(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);
udelay(2); /* Soft Reset must be asserted for 3 TX clocks */
clrbits_be32(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);
/* Try to initialize PHY here, and return */
return init_phy(dev);
}
/*
* Initialize all the TSEC devices
*
* Returns the number of TSEC devices that were initialized
*/
int tsec_eth_init(bd_t *bis, struct tsec_info_struct *tsecs, int num)
{
int i;
int ret, count = 0;
for (i = 0; i < num; i++) {
ret = tsec_initialize(bis, &tsecs[i]);
if (ret > 0)
count += ret;
}
return count;
}
int tsec_standard_init(bd_t *bis)
{
struct fsl_pq_mdio_info info;
info.regs = TSEC_GET_MDIO_REGS_BASE(1);
info.name = DEFAULT_MII_NAME;
fsl_pq_mdio_init(bis, &info);
return tsec_eth_init(bis, tsec_info, ARRAY_SIZE(tsec_info));
}