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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587 lines
14 KiB
587 lines
14 KiB
/*
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* (C) Copyright 2010
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* Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Designware ethernet IP driver for u-boot
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*/
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#include <common.h>
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#include <miiphy.h>
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#include <malloc.h>
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#include <linux/err.h>
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#include <asm/io.h>
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#include "designware.h"
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static int configure_phy(struct eth_device *dev);
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static void tx_descs_init(struct eth_device *dev)
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{
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struct dw_eth_dev *priv = dev->priv;
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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struct dmamacdescr *desc_table_p = &priv->tx_mac_descrtable[0];
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char *txbuffs = &priv->txbuffs[0];
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struct dmamacdescr *desc_p;
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u32 idx;
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for (idx = 0; idx < CONFIG_TX_DESCR_NUM; idx++) {
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desc_p = &desc_table_p[idx];
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desc_p->dmamac_addr = &txbuffs[idx * CONFIG_ETH_BUFSIZE];
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desc_p->dmamac_next = &desc_table_p[idx + 1];
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#if defined(CONFIG_DW_ALTDESCRIPTOR)
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desc_p->txrx_status &= ~(DESC_TXSTS_TXINT | DESC_TXSTS_TXLAST |
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DESC_TXSTS_TXFIRST | DESC_TXSTS_TXCRCDIS | \
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DESC_TXSTS_TXCHECKINSCTRL | \
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DESC_TXSTS_TXRINGEND | DESC_TXSTS_TXPADDIS);
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desc_p->txrx_status |= DESC_TXSTS_TXCHAIN;
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desc_p->dmamac_cntl = 0;
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desc_p->txrx_status &= ~(DESC_TXSTS_MSK | DESC_TXSTS_OWNBYDMA);
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#else
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desc_p->dmamac_cntl = DESC_TXCTRL_TXCHAIN;
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desc_p->txrx_status = 0;
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#endif
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}
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/* Correcting the last pointer of the chain */
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desc_p->dmamac_next = &desc_table_p[0];
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writel((ulong)&desc_table_p[0], &dma_p->txdesclistaddr);
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}
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static void rx_descs_init(struct eth_device *dev)
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{
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struct dw_eth_dev *priv = dev->priv;
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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struct dmamacdescr *desc_table_p = &priv->rx_mac_descrtable[0];
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char *rxbuffs = &priv->rxbuffs[0];
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struct dmamacdescr *desc_p;
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u32 idx;
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for (idx = 0; idx < CONFIG_RX_DESCR_NUM; idx++) {
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desc_p = &desc_table_p[idx];
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desc_p->dmamac_addr = &rxbuffs[idx * CONFIG_ETH_BUFSIZE];
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desc_p->dmamac_next = &desc_table_p[idx + 1];
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desc_p->dmamac_cntl =
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(MAC_MAX_FRAME_SZ & DESC_RXCTRL_SIZE1MASK) | \
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DESC_RXCTRL_RXCHAIN;
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desc_p->txrx_status = DESC_RXSTS_OWNBYDMA;
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}
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/* Correcting the last pointer of the chain */
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desc_p->dmamac_next = &desc_table_p[0];
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writel((ulong)&desc_table_p[0], &dma_p->rxdesclistaddr);
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}
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static void descs_init(struct eth_device *dev)
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{
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tx_descs_init(dev);
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rx_descs_init(dev);
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}
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static int mac_reset(struct eth_device *dev)
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{
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struct dw_eth_dev *priv = dev->priv;
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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ulong start;
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int timeout = CONFIG_MACRESET_TIMEOUT;
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writel(DMAMAC_SRST, &dma_p->busmode);
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writel(MII_PORTSELECT, &mac_p->conf);
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start = get_timer(0);
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while (get_timer(start) < timeout) {
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if (!(readl(&dma_p->busmode) & DMAMAC_SRST))
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return 0;
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/* Try again after 10usec */
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udelay(10);
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};
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return -1;
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}
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static int dw_write_hwaddr(struct eth_device *dev)
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{
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struct dw_eth_dev *priv = dev->priv;
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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u32 macid_lo, macid_hi;
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u8 *mac_id = &dev->enetaddr[0];
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macid_lo = mac_id[0] + (mac_id[1] << 8) + \
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(mac_id[2] << 16) + (mac_id[3] << 24);
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macid_hi = mac_id[4] + (mac_id[5] << 8);
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writel(macid_hi, &mac_p->macaddr0hi);
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writel(macid_lo, &mac_p->macaddr0lo);
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return 0;
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}
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static int dw_eth_init(struct eth_device *dev, bd_t *bis)
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{
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struct dw_eth_dev *priv = dev->priv;
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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u32 conf;
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if (priv->phy_configured != 1)
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configure_phy(dev);
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/* Reset ethernet hardware */
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if (mac_reset(dev) < 0)
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return -1;
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/* Resore the HW MAC address as it has been lost during MAC reset */
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dw_write_hwaddr(dev);
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writel(FIXEDBURST | PRIORXTX_41 | BURST_16,
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&dma_p->busmode);
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writel(FLUSHTXFIFO | readl(&dma_p->opmode), &dma_p->opmode);
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writel(STOREFORWARD | TXSECONDFRAME, &dma_p->opmode);
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conf = FRAMEBURSTENABLE | DISABLERXOWN;
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if (priv->speed != SPEED_1000M)
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conf |= MII_PORTSELECT;
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if (priv->duplex == FULL_DUPLEX)
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conf |= FULLDPLXMODE;
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writel(conf, &mac_p->conf);
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descs_init(dev);
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/*
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* Start/Enable xfer at dma as well as mac level
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*/
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writel(readl(&dma_p->opmode) | RXSTART, &dma_p->opmode);
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writel(readl(&dma_p->opmode) | TXSTART, &dma_p->opmode);
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writel(readl(&mac_p->conf) | RXENABLE | TXENABLE, &mac_p->conf);
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return 0;
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}
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static int dw_eth_send(struct eth_device *dev, volatile void *packet,
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int length)
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{
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struct dw_eth_dev *priv = dev->priv;
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struct eth_dma_regs *dma_p = priv->dma_regs_p;
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u32 desc_num = priv->tx_currdescnum;
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struct dmamacdescr *desc_p = &priv->tx_mac_descrtable[desc_num];
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/* Check if the descriptor is owned by CPU */
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if (desc_p->txrx_status & DESC_TXSTS_OWNBYDMA) {
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printf("CPU not owner of tx frame\n");
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return -1;
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}
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memcpy((void *)desc_p->dmamac_addr, (void *)packet, length);
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#if defined(CONFIG_DW_ALTDESCRIPTOR)
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desc_p->txrx_status |= DESC_TXSTS_TXFIRST | DESC_TXSTS_TXLAST;
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desc_p->dmamac_cntl |= (length << DESC_TXCTRL_SIZE1SHFT) & \
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DESC_TXCTRL_SIZE1MASK;
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desc_p->txrx_status &= ~(DESC_TXSTS_MSK);
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desc_p->txrx_status |= DESC_TXSTS_OWNBYDMA;
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#else
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desc_p->dmamac_cntl |= ((length << DESC_TXCTRL_SIZE1SHFT) & \
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DESC_TXCTRL_SIZE1MASK) | DESC_TXCTRL_TXLAST | \
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DESC_TXCTRL_TXFIRST;
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desc_p->txrx_status = DESC_TXSTS_OWNBYDMA;
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#endif
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/* Test the wrap-around condition. */
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if (++desc_num >= CONFIG_TX_DESCR_NUM)
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desc_num = 0;
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priv->tx_currdescnum = desc_num;
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/* Start the transmission */
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writel(POLL_DATA, &dma_p->txpolldemand);
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return 0;
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}
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static int dw_eth_recv(struct eth_device *dev)
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{
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struct dw_eth_dev *priv = dev->priv;
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u32 desc_num = priv->rx_currdescnum;
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struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num];
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u32 status = desc_p->txrx_status;
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int length = 0;
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/* Check if the owner is the CPU */
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if (!(status & DESC_RXSTS_OWNBYDMA)) {
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length = (status & DESC_RXSTS_FRMLENMSK) >> \
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DESC_RXSTS_FRMLENSHFT;
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NetReceive(desc_p->dmamac_addr, length);
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/*
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* Make the current descriptor valid again and go to
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* the next one
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*/
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desc_p->txrx_status |= DESC_RXSTS_OWNBYDMA;
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/* Test the wrap-around condition. */
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if (++desc_num >= CONFIG_RX_DESCR_NUM)
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desc_num = 0;
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}
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priv->rx_currdescnum = desc_num;
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return length;
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}
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static void dw_eth_halt(struct eth_device *dev)
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{
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struct dw_eth_dev *priv = dev->priv;
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mac_reset(dev);
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priv->tx_currdescnum = priv->rx_currdescnum = 0;
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}
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static int eth_mdio_read(struct eth_device *dev, u8 addr, u8 reg, u16 *val)
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{
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struct dw_eth_dev *priv = dev->priv;
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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ulong start;
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u32 miiaddr;
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int timeout = CONFIG_MDIO_TIMEOUT;
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miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) | \
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((reg << MIIREGSHIFT) & MII_REGMSK);
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writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr);
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start = get_timer(0);
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while (get_timer(start) < timeout) {
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if (!(readl(&mac_p->miiaddr) & MII_BUSY)) {
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*val = readl(&mac_p->miidata);
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return 0;
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}
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/* Try again after 10usec */
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udelay(10);
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};
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return -1;
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}
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static int eth_mdio_write(struct eth_device *dev, u8 addr, u8 reg, u16 val)
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{
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struct dw_eth_dev *priv = dev->priv;
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struct eth_mac_regs *mac_p = priv->mac_regs_p;
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ulong start;
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u32 miiaddr;
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int ret = -1, timeout = CONFIG_MDIO_TIMEOUT;
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u16 value;
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writel(val, &mac_p->miidata);
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miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) | \
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((reg << MIIREGSHIFT) & MII_REGMSK) | MII_WRITE;
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writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr);
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start = get_timer(0);
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while (get_timer(start) < timeout) {
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if (!(readl(&mac_p->miiaddr) & MII_BUSY)) {
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ret = 0;
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break;
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}
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/* Try again after 10usec */
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udelay(10);
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};
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/* Needed as a fix for ST-Phy */
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eth_mdio_read(dev, addr, reg, &value);
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return ret;
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}
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#if defined(CONFIG_DW_SEARCH_PHY)
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static int find_phy(struct eth_device *dev)
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{
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int phy_addr = 0;
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u16 ctrl, oldctrl;
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do {
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eth_mdio_read(dev, phy_addr, MII_BMCR, &ctrl);
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oldctrl = ctrl & BMCR_ANENABLE;
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ctrl ^= BMCR_ANENABLE;
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eth_mdio_write(dev, phy_addr, MII_BMCR, ctrl);
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eth_mdio_read(dev, phy_addr, MII_BMCR, &ctrl);
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ctrl &= BMCR_ANENABLE;
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if (ctrl == oldctrl) {
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phy_addr++;
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} else {
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ctrl ^= BMCR_ANENABLE;
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eth_mdio_write(dev, phy_addr, MII_BMCR, ctrl);
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return phy_addr;
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}
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} while (phy_addr < 32);
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return -1;
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}
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#endif
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static int dw_reset_phy(struct eth_device *dev)
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{
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struct dw_eth_dev *priv = dev->priv;
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u16 ctrl;
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ulong start;
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int timeout = CONFIG_PHYRESET_TIMEOUT;
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u32 phy_addr = priv->address;
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eth_mdio_write(dev, phy_addr, MII_BMCR, BMCR_RESET);
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start = get_timer(0);
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while (get_timer(start) < timeout) {
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eth_mdio_read(dev, phy_addr, MII_BMCR, &ctrl);
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if (!(ctrl & BMCR_RESET))
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break;
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/* Try again after 10usec */
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udelay(10);
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};
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if (get_timer(start) >= CONFIG_PHYRESET_TIMEOUT)
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return -1;
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#ifdef CONFIG_PHY_RESET_DELAY
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udelay(CONFIG_PHY_RESET_DELAY);
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#endif
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return 0;
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}
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static int configure_phy(struct eth_device *dev)
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{
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struct dw_eth_dev *priv = dev->priv;
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int phy_addr;
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u16 bmcr;
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#if defined(CONFIG_DW_AUTONEG)
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u16 bmsr;
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u32 timeout;
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ulong start;
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u16 anlpar, btsr;
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#else
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u16 ctrl;
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#endif
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#if defined(CONFIG_DW_SEARCH_PHY)
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phy_addr = find_phy(dev);
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if (phy_addr >= 0)
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priv->address = phy_addr;
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else
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return -1;
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#else
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phy_addr = priv->address;
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#endif
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if (dw_reset_phy(dev) < 0)
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return -1;
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#if defined(CONFIG_DW_AUTONEG)
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/* Set Auto-Neg Advertisement capabilities to 10/100 half/full */
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eth_mdio_write(dev, phy_addr, MII_ADVERTISE, 0x1E1);
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bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
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#else
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bmcr = BMCR_SPEED100 | BMCR_FULLDPLX;
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#if defined(CONFIG_DW_SPEED10M)
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bmcr &= ~BMCR_SPEED100;
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#endif
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#if defined(CONFIG_DW_DUPLEXHALF)
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bmcr &= ~BMCR_FULLDPLX;
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#endif
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#endif
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if (eth_mdio_write(dev, phy_addr, MII_BMCR, bmcr) < 0)
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return -1;
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/* Read the phy status register and populate priv structure */
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#if defined(CONFIG_DW_AUTONEG)
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timeout = CONFIG_AUTONEG_TIMEOUT;
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start = get_timer(0);
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while (get_timer(start) < timeout) {
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eth_mdio_read(dev, phy_addr, MII_BMSR, &bmsr);
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if (bmsr & BMSR_ANEGCOMPLETE)
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break;
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/* Try again after 10usec */
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udelay(10);
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};
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eth_mdio_read(dev, phy_addr, MII_LPA, &anlpar);
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eth_mdio_read(dev, phy_addr, MII_STAT1000, &btsr);
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if (bmsr & BMSR_ANEGCOMPLETE) {
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if (btsr & PHY_1000BTSR_1000FD) {
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priv->speed = SPEED_1000M;
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bmcr |= BMCR_SPEED1000;
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priv->duplex = FULL_DUPLEX;
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bmcr |= BMCR_FULLDPLX;
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} else if (btsr & PHY_1000BTSR_1000HD) {
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priv->speed = SPEED_1000M;
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bmcr |= BMCR_SPEED1000;
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priv->duplex = HALF_DUPLEX;
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bmcr &= ~BMCR_FULLDPLX;
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} else if (anlpar & LPA_100FULL) {
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priv->speed = SPEED_100M;
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bmcr |= BMCR_SPEED100;
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priv->duplex = FULL_DUPLEX;
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bmcr |= BMCR_FULLDPLX;
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} else if (anlpar & LPA_100HALF) {
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priv->speed = SPEED_100M;
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bmcr |= BMCR_SPEED100;
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priv->duplex = HALF_DUPLEX;
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bmcr &= ~BMCR_FULLDPLX;
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} else if (anlpar & LPA_10FULL) {
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priv->speed = SPEED_10M;
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bmcr &= ~BMCR_SPEED100;
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priv->duplex = FULL_DUPLEX;
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bmcr |= BMCR_FULLDPLX;
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} else {
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priv->speed = SPEED_10M;
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bmcr &= ~BMCR_SPEED100;
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priv->duplex = HALF_DUPLEX;
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bmcr &= ~BMCR_FULLDPLX;
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}
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if (eth_mdio_write(dev, phy_addr, MII_BMCR, bmcr) < 0)
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return -1;
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} else
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return -1;
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#else
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if (eth_mdio_read(dev, phy_addr, MII_BMCR, &ctrl) < 0)
|
|
return -1;
|
|
|
|
if (ctrl & BMCR_FULLDPLX)
|
|
priv->duplex = FULL_DUPLEX;
|
|
else
|
|
priv->duplex = HALF_DUPLEX;
|
|
|
|
if (ctrl & BMCR_SPEED1000)
|
|
priv->speed = SPEED_1000M;
|
|
else if (ctrl & BMCR_SPEED100)
|
|
priv->speed = SPEED_100M;
|
|
else
|
|
priv->speed = SPEED_10M;
|
|
#endif
|
|
priv->phy_configured = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined(CONFIG_MII)
|
|
static int dw_mii_read(const char *devname, u8 addr, u8 reg, u16 *val)
|
|
{
|
|
struct eth_device *dev;
|
|
|
|
dev = eth_get_dev_by_name(devname);
|
|
if (dev)
|
|
eth_mdio_read(dev, addr, reg, val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dw_mii_write(const char *devname, u8 addr, u8 reg, u16 val)
|
|
{
|
|
struct eth_device *dev;
|
|
|
|
dev = eth_get_dev_by_name(devname);
|
|
if (dev)
|
|
eth_mdio_write(dev, addr, reg, val);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
int designware_initialize(u32 id, ulong base_addr, u32 phy_addr)
|
|
{
|
|
struct eth_device *dev;
|
|
struct dw_eth_dev *priv;
|
|
|
|
dev = (struct eth_device *) malloc(sizeof(struct eth_device));
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* Since the priv structure contains the descriptors which need a strict
|
|
* buswidth alignment, memalign is used to allocate memory
|
|
*/
|
|
priv = (struct dw_eth_dev *) memalign(16, sizeof(struct dw_eth_dev));
|
|
if (!priv) {
|
|
free(dev);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
memset(dev, 0, sizeof(struct eth_device));
|
|
memset(priv, 0, sizeof(struct dw_eth_dev));
|
|
|
|
sprintf(dev->name, "mii%d", id);
|
|
dev->iobase = (int)base_addr;
|
|
dev->priv = priv;
|
|
|
|
eth_getenv_enetaddr_by_index("eth", id, &dev->enetaddr[0]);
|
|
|
|
priv->dev = dev;
|
|
priv->mac_regs_p = (struct eth_mac_regs *)base_addr;
|
|
priv->dma_regs_p = (struct eth_dma_regs *)(base_addr +
|
|
DW_DMA_BASE_OFFSET);
|
|
priv->address = phy_addr;
|
|
priv->phy_configured = 0;
|
|
|
|
if (mac_reset(dev) < 0)
|
|
return -1;
|
|
|
|
configure_phy(dev);
|
|
|
|
dev->init = dw_eth_init;
|
|
dev->send = dw_eth_send;
|
|
dev->recv = dw_eth_recv;
|
|
dev->halt = dw_eth_halt;
|
|
dev->write_hwaddr = dw_write_hwaddr;
|
|
|
|
eth_register(dev);
|
|
|
|
#if defined(CONFIG_MII)
|
|
miiphy_register(dev->name, dw_mii_read, dw_mii_write);
|
|
#endif
|
|
return 1;
|
|
}
|
|
|