[U-Boot] [PATCH v3 1/8] lpc32xx: add Ethernet support
Albert ARIBAUD (3ADEV)
albert.aribaud at 3adev.fr
Thu Mar 5 07:46:51 CET 2015
Signed-off-by: Albert ARIBAUD (3ADEV) <albert.aribaud at 3adev.fr>
---
Changes in v3: None
Changes in v2: None
arch/arm/cpu/arm926ejs/lpc32xx/cpu.c | 9 +
arch/arm/cpu/arm926ejs/lpc32xx/devices.c | 7 +
arch/arm/include/asm/arch-lpc32xx/config.h | 3 +
arch/arm/include/asm/arch-lpc32xx/sys_proto.h | 1 +
drivers/net/Makefile | 1 +
drivers/net/lpc32xx_eth.c | 636 ++++++++++++++++++++++++++
include/netdev.h | 1 +
7 files changed, 658 insertions(+)
create mode 100644 drivers/net/lpc32xx_eth.c
diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/cpu.c b/arch/arm/cpu/arm926ejs/lpc32xx/cpu.c
index 35095a9..eec4d9e 100644
--- a/arch/arm/cpu/arm926ejs/lpc32xx/cpu.c
+++ b/arch/arm/cpu/arm926ejs/lpc32xx/cpu.c
@@ -5,6 +5,7 @@
*/
#include <common.h>
+#include <netdev.h>
#include <asm/arch/cpu.h>
#include <asm/arch/clk.h>
#include <asm/arch/wdt.h>
@@ -55,3 +56,11 @@ int print_cpuinfo(void)
return 0;
}
#endif
+
+#ifdef CONFIG_LPC32XX_ETH
+int cpu_eth_init(bd_t *bis)
+{
+ lpc32xx_eth_initialize(bis);
+ return 0;
+}
+#endif
diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c
index b567657..062db8d 100644
--- a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c
+++ b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c
@@ -37,3 +37,10 @@ void lpc32xx_uart_init(unsigned int uart_id)
writel(CLK_UART_X_DIV(1) | CLK_UART_Y_DIV(1),
&clk->u3clk + (uart_id - 3));
}
+
+void lpc32xx_mac_init(void)
+{
+ /* Enable MAC interface */
+ writel(CLK_MAC_REG | CLK_MAC_SLAVE | CLK_MAC_MASTER
+ | CLK_MAC_MII, &clk->macclk_ctrl);
+}
diff --git a/arch/arm/include/asm/arch-lpc32xx/config.h b/arch/arm/include/asm/arch-lpc32xx/config.h
index 564441c..d57bc48 100644
--- a/arch/arm/include/asm/arch-lpc32xx/config.h
+++ b/arch/arm/include/asm/arch-lpc32xx/config.h
@@ -52,6 +52,9 @@
#define CONFIG_SYS_BAUDRATE_TABLE \
{ 9600, 19200, 38400, 57600, 115200, 230400, 460800 }
+/* Ethernet */
+#define LPC32XX_ETH_BASE ETHERNET_BASE
+
/* NOR Flash */
#if defined(CONFIG_SYS_FLASH_CFI)
#define CONFIG_FLASH_CFI_DRIVER
diff --git a/arch/arm/include/asm/arch-lpc32xx/sys_proto.h b/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
index 28812be..a6b8826 100644
--- a/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
@@ -8,5 +8,6 @@
#define _LPC32XX_SYS_PROTO_H
void lpc32xx_uart_init(unsigned int uart_id);
+void lpc32xx_mac_init(void);
#endif /* _LPC32XX_SYS_PROTO_H */
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index b8b0803..af8941f 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -35,6 +35,7 @@ obj-$(CONFIG_GRETH) += greth.o
obj-$(CONFIG_DRIVER_TI_KEYSTONE_NET) += keystone_net.o
obj-$(CONFIG_KS8851_MLL) += ks8851_mll.o
obj-$(CONFIG_LAN91C96) += lan91c96.o
+obj-$(CONFIG_LPC32XX_ETH) += lpc32xx_eth.o
obj-$(CONFIG_MACB) += macb.o
obj-$(CONFIG_MCFFEC) += mcffec.o mcfmii.o
obj-$(CONFIG_MPC5xxx_FEC) += mpc5xxx_fec.o
diff --git a/drivers/net/lpc32xx_eth.c b/drivers/net/lpc32xx_eth.c
new file mode 100644
index 0000000..16c8ef0
--- /dev/null
+++ b/drivers/net/lpc32xx_eth.c
@@ -0,0 +1,636 @@
+/*
+ * LPC32xx Ethernet MAC interface driver
+ *
+ * (C) Copyright 2014 DENX Software Engineering GmbH
+ * Written-by: Albert ARIBAUD - 3ADEV <albert.aribaud at 3adev.fr>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <net.h>
+#include <malloc.h>
+#include <miiphy.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+#include <asm/types.h>
+#include <asm/system.h>
+#include <asm/byteorder.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/config.h>
+
+/*
+ * Notes:
+ *
+ * 1. Unless specified otherwise, all references to tables or paragraphs
+ * are to UM10326, "LPC32x0 and LPC32x0/01 User manual".
+ *
+ * 2. Only bitfield masks/values which are actually used by the driver
+ * are defined.
+ */
+
+/* a single RX descriptor. The controller has an array of these */
+struct lpc32xx_eth_rxdesc {
+ u32 packet; /* Receive packet pointer */
+ u32 control; /* Descriptor command status */
+};
+
+#define LPC32XX_ETH_RX_DESC_SIZE (sizeof(struct lpc32xx_eth_rxdesc))
+
+/* RX control bitfields/masks (see Table 330) */
+#define LPC32XX_ETH_RX_CTRL_SIZE_MASK 0x000007FF
+#define LPC32XX_ETH_RX_CTRL_UNUSED 0x7FFFF800
+#define LPC32XX_ETH_RX_CTRL_INTERRUPT 0x80000000
+
+/* a single RX status. The controller has an array of these */
+struct lpc32xx_eth_rxstat {
+ u32 statusinfo; /* Transmit Descriptor status */
+ u32 statushashcrc; /* Transmit Descriptor CRCs */
+};
+
+#define LPC32XX_ETH_RX_STAT_SIZE (sizeof(struct lpc32xx_eth_rxstat))
+
+/* RX statusinfo bitfields/masks (see Table 333) */
+#define RX_STAT_RXSIZE 0x000007FF
+/* Helper: OR of all errors except RANGE */
+#define RX_STAT_ERRORS 0x1B800000
+
+/* a single TX descriptor. The controller has an array of these */
+struct lpc32xx_eth_txdesc {
+ u32 packet; /* Transmit packet pointer */
+ u32 control; /* Descriptor control */
+};
+
+#define LPC32XX_ETH_TX_DESC_SIZE (sizeof(struct lpc32xx_eth_txdesc))
+
+/* TX control bitfields/masks (see Table 335) */
+#define TX_CTRL_TXSIZE 0x000007FF
+#define TX_CTRL_LAST 0x40000000
+
+/* a single TX status. The controller has an array of these */
+struct lpc32xx_eth_txstat {
+ u32 statusinfo; /* Transmit Descriptor status */
+};
+
+#define LPC32XX_ETH_TX_STAT_SIZE (sizeof(struct lpc32xx_eth_txstat))
+
+/* Ethernet MAC interface registers (see Table 283) */
+struct lpc32xx_eth_registers {
+ /* MAC registers - 0x3106_0000 to 0x3106_01FC */
+ u32 mac1; /* MAC configuration register 1 */
+ u32 mac2; /* MAC configuration register 2 */
+ u32 ipgt; /* Back-to-back Inter-Packet Gap reg. */
+ u32 ipgr; /* Non-back-to-back IPG register */
+ u32 clrt; /* Collision Window / Retry register */
+ u32 maxf; /* Maximum Frame register */
+ u32 supp; /* Phy Support register */
+ u32 test;
+ u32 mcfg; /* MII management configuration reg. */
+ u32 mcmd; /* MII management command register */
+ u32 madr; /* MII management address register */
+ u32 mwtd; /* MII management wite data register */
+ u32 mrdd; /* MII management read data register */
+ u32 mind; /* MII management indicators register */
+ u32 reserved1[2];
+ u32 sa0; /* Station address register 0 */
+ u32 sa1; /* Station address register 1 */
+ u32 sa2; /* Station address register 2 */
+ u32 reserved2[45];
+ /* Control registers */
+ u32 command;
+ u32 status;
+ u32 rxdescriptor;
+ u32 rxstatus;
+ u32 rxdescriptornumber; /* actually, number MINUS ONE */
+ u32 rxproduceindex; /* head of rx desc fifo */
+ u32 rxconsumeindex; /* tail of rx desc fifo */
+ u32 txdescriptor;
+ u32 txstatus;
+ u32 txdescriptornumber; /* actually, number MINUS ONE */
+ u32 txproduceindex; /* head of rx desc fifo */
+ u32 txconsumeindex; /* tail of rx desc fifo */
+ u32 reserved3[10];
+ u32 tsv0; /* Transmit status vector register 0 */
+ u32 tsv1; /* Transmit status vector register 1 */
+ u32 rsv; /* Receive status vector register */
+ u32 reserved4[3];
+ u32 flowcontrolcounter;
+ u32 flowcontrolstatus;
+ u32 reserved5[34];
+ /* RX filter registers - 0x3106_0200 to 0x3106_0FDC */
+ u32 rxfilterctrl;
+ u32 rxfilterwolstatus;
+ u32 rxfilterwolclear;
+ u32 reserved6;
+ u32 hashfilterl;
+ u32 hashfilterh;
+ u32 reserved7[882];
+ /* Module control registers - 0x3106_0FE0 to 0x3106_0FF8 */
+ u32 intstatus; /* Interrupt status register */
+ u32 intenable;
+ u32 intclear;
+ u32 intset;
+ u32 reserved8;
+ u32 powerdown;
+ u32 reserved9;
+};
+
+/* MAC1 register bitfields/masks and offsets (see Table 283) */
+#define MAC1_RECV_ENABLE 0x00000001
+#define MAC1_PASS_ALL_RX_FRAMES 0x00000002
+#define MAC1_SOFT_RESET 0x00008000
+/* Helper: general reset */
+#define MAC1_RESETS 0x0000CF00
+
+/* MAC2 register bitfields/masks and offsets (see Table 284) */
+#define MAC2_FULL_DUPLEX 0x00000001
+#define MAC2_CRC_ENABLE 0x00000010
+#define MAC2_PAD_CRC_ENABLE 0x00000020
+
+/* SUPP register bitfields/masks and offsets (see Table 290) */
+#define SUPP_SPEED 0x00000100
+
+/* MCFG register bitfields/masks and offsets (see Table 292) */
+#define MCFG_CLOCK_SELECT_MASK 0x0000001C
+/* divide clock by 28 (see Table 293) */
+#define MCFG_CLOCK_SELECT_DIV28 0x0000001C
+
+/* MADR register bitfields/masks and offsets (see Table 295) */
+#define MADR_REG_MASK 0x0000001F
+#define MADR_PHY_MASK 0x00001F00
+#define MADR_REG_OFFSET 0
+#define MADR_PHY_OFFSET 8
+
+/* MIND register bitfields/masks (see Table 298) */
+#define MIND_BUSY 0x00000001
+
+/* COMMAND register bitfields/masks and offsets (see Table 283) */
+#define COMMAND_RXENABLE 0x00000001
+#define COMMAND_TXENABLE 0x00000002
+#define COMMAND_PASSRUNTFRAME 0x00000040
+#define COMMAND_FULL_DUPLEX 0x00000400
+/* Helper: general reset */
+#define COMMAND_RESETS 0x0000001C
+
+/* STATUS register bitfields/masks and offsets (see Table 283) */
+#define STATUS_RXSTATUS 0x00000001
+#define STATUS_TXSTATUS 0x00000002
+
+/* RXFILTERCTRL register bitfields/masks (see Table 319) */
+#define RXFILTERCTRL_ACCEPTBROADCAST 0x00000002
+#define RXFILTERCTRL_ACCEPTPERFECT 0x00000020
+
+/* port device data struct */
+struct lpc32xx_eth_device {
+ struct eth_device dev;
+ struct lpc32xx_eth_registers *regs;
+ struct lpc32xx_eth_txdesc *p_txdesc;
+ struct lpc32xx_eth_txstat *p_txstat;
+ struct lpc32xx_eth_rxdesc *p_rxdesc;
+ struct lpc32xx_eth_rxstat *p_rxstat;
+ u8 *p_rxbuf;
+ u8 *p_txbuf;
+};
+
+#define LPC32XX_ETH_DEVICE_SIZE (sizeof(struct lpc32xx_eth_device))
+
+/* generic macros */
+#define to_lpc32xx_eth(_d) container_of(_d, struct lpc32xx_eth_device, dev)
+
+/* timeout for MII polling */
+#define MII_TIMEOUT 10000000
+
+/* limits for PHY and register addresses */
+#define MII_MAX_REG (MADR_REG_MASK >> MADR_REG_OFFSET)
+
+#define MII_MAX_PHY (MADR_PHY_MASK >> MADR_PHY_OFFSET)
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_PHYLIB) || defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+/*
+ * mii_reg_read - miiphy_read callback function.
+ *
+ * Returns 16bit phy register value, or 0xffff on error
+ */
+static int mii_reg_read(const char *devname, u8 phy_adr, u8 reg_ofs, u16 *data)
+{
+ struct eth_device *dev = eth_get_dev_by_name(devname);
+ struct lpc32xx_eth_device *dlpc32xx_eth = to_lpc32xx_eth(dev);
+ struct lpc32xx_eth_registers *regs = dlpc32xx_eth->regs;
+ u32 mind_reg;
+ u32 timeout;
+
+ /* check parameters */
+ if (phy_adr > MII_MAX_PHY) {
+ printf("%s:%u: Invalid PHY address %d\n",
+ __func__, __LINE__, phy_adr);
+ return -EFAULT;
+ }
+ if (reg_ofs > MII_MAX_REG) {
+ printf("%s:%u: Invalid register offset %d\n",
+ __func__, __LINE__, reg_ofs);
+ return -EFAULT;
+ }
+
+ /* write the phy and reg addressse into the MII address reg */
+ writel((phy_adr << MADR_PHY_OFFSET) | (reg_ofs << MADR_REG_OFFSET),
+ ®s->madr);
+
+ /* write 1 to the MII command register to cause a read */
+ writel(1, ®s->mcmd);
+
+ /* wait till the MII is not busy */
+ timeout = MII_TIMEOUT;
+ do {
+ /* read MII indicators register */
+ mind_reg = readl(®s->mind);
+ if (--timeout == 0)
+ break;
+ } while (mind_reg & MIND_BUSY);
+
+ /* write 0 to the MII command register to finish the read */
+ writel(0, ®s->mcmd);
+
+ if (timeout == 0) {
+ printf("%s:%u: MII busy timeout\n", __func__, __LINE__);
+ return -EFAULT;
+ }
+
+ *data = (u16) readl(®s->mrdd);
+
+ debug("%s:(adr %d, off %d) => %04x\n", __func__, phy_adr,
+ reg_ofs, *data);
+
+ return 0;
+}
+
+/*
+ * mii_reg_write - imiiphy_write callback function.
+ *
+ * Returns 0 if write succeed, -EINVAL on bad parameters
+ * -ETIME on timeout
+ */
+static int mii_reg_write(const char *devname, u8 phy_adr, u8 reg_ofs, u16 data)
+{
+ struct eth_device *dev = eth_get_dev_by_name(devname);
+ struct lpc32xx_eth_device *dlpc32xx_eth = to_lpc32xx_eth(dev);
+ struct lpc32xx_eth_registers *regs = dlpc32xx_eth->regs;
+ u32 mind_reg;
+ u32 timeout;
+
+ /* check parameters */
+ if (phy_adr > MII_MAX_PHY) {
+ printf("%s:%u: Invalid PHY address %d\n",
+ __func__, __LINE__, phy_adr);
+ return -EFAULT;
+ }
+ if (reg_ofs > MII_MAX_REG) {
+ printf("%s:%u: Invalid register offset %d\n",
+ __func__, __LINE__, reg_ofs);
+ return -EFAULT;
+ }
+
+ /* wait till the MII is not busy */
+ timeout = MII_TIMEOUT;
+ do {
+ /* read MII indicators register */
+ mind_reg = readl(®s->mind);
+ if (--timeout == 0)
+ break;
+ } while (mind_reg & MIND_BUSY);
+
+ if (timeout == 0) {
+ printf("%s:%u: MII busy timeout\n", __func__,
+ __LINE__);
+ return -EFAULT;
+ }
+
+ /* write the phy and reg addressse into the MII address reg */
+ writel((phy_adr << MADR_PHY_OFFSET) | (reg_ofs << MADR_REG_OFFSET),
+ ®s->madr);
+
+ /* write data to the MII write register */
+ writel(data, ®s->mwtd);
+
+ /*debug("%s:(adr %d, off %d) <= %04x\n", __func__, phy_adr,
+ reg_ofs, data);*/
+
+ return 0;
+}
+#endif
+
+#if defined(CONFIG_PHYLIB)
+int lpc32xx_eth_phy_read(struct mii_dev *bus, int phy_addr, int dev_addr,
+ int reg_addr)
+{
+ u16 data;
+ int ret;
+ ret = mii_reg_read(bus->name, phy_addr, reg_addr, &data);
+ if (ret)
+ return ret;
+ return data;
+}
+
+int lpc32xx_eth_phy_write(struct mii_dev *bus, int phy_addr, int dev_addr,
+ int reg_addr, u16 data)
+{
+ return mii_reg_write(bus->name, phy_addr, reg_addr, data);
+}
+#endif
+
+/* Use static aligned variables for the driver */
+
+/* this driver needs at least 4 RX and 4 TX buffers */
+
+#define TX_BUF_COUNT 4
+static __aligned(4) struct lpc32xx_eth_txdesc tx_desc[TX_BUF_COUNT];
+static __aligned(4) struct lpc32xx_eth_txstat tx_stat[TX_BUF_COUNT];
+static __aligned(PKTALIGN) u8 tx_buf[TX_BUF_COUNT*PKTSIZE_ALIGN];
+
+#define RX_BUF_COUNT 4
+static __aligned(4) struct lpc32xx_eth_rxdesc rx_desc[RX_BUF_COUNT];
+static __aligned(8) struct lpc32xx_eth_rxstat rx_stat[RX_BUF_COUNT];
+static __aligned(PKTALIGN) u8 rx_buf[RX_BUF_COUNT*PKTSIZE_ALIGN];
+
+static struct lpc32xx_eth_device lpc32xx_eth = {
+ .regs = (void *)LPC32XX_ETH_BASE,
+ .p_txdesc = tx_desc,
+ .p_txstat = tx_stat,
+ .p_rxdesc = rx_desc,
+ .p_rxstat = rx_stat,
+ .p_txbuf = tx_buf,
+ .p_rxbuf = rx_buf,
+};
+
+#define TX_TIMEOUT 10000
+
+static int lpc32xx_eth_send(struct eth_device *dev, void *dataptr, int datasize)
+{
+ struct lpc32xx_eth_device *lpc32xx_eth_device =
+ container_of(dev, struct lpc32xx_eth_device, dev);
+ struct lpc32xx_eth_registers *regs = lpc32xx_eth_device->regs;
+ int timeout, tx_index;
+
+ /* time out if transmit descriptor array remains full too long */
+ timeout = TX_TIMEOUT;
+ while ((regs->status & STATUS_TXSTATUS) &&
+ (regs->txconsumeindex == regs->txproduceindex)) {
+ if (timeout-- == 0) {
+ debug("%s:%u: time out\n", __func__,
+ __LINE__);
+ return -1;
+ }
+ }
+
+ /* determine next transmit packet index to use */
+ tx_index = regs->txproduceindex;
+
+ /* set up transmit packet */
+ writel((u32)dataptr, &tx_desc[tx_index].packet);
+ writel(TX_CTRL_LAST | ((datasize - 1) & TX_CTRL_TXSIZE),
+ &tx_desc[tx_index].control);
+ writel(0, &tx_stat[tx_index].statusinfo);
+
+ /* pass transmit packet to DMA engine */
+ tx_index = (tx_index + 1) % TX_BUF_COUNT;
+ writel(tx_index, ®s->txproduceindex);
+
+ /* transmission succeeded */
+ return 0;
+}
+
+#define RX_TIMEOUT 1000000
+
+static int lpc32xx_eth_recv(struct eth_device *dev)
+{
+ struct lpc32xx_eth_device *lpc32xx_eth_device =
+ container_of(dev, struct lpc32xx_eth_device, dev);
+ struct lpc32xx_eth_registers *regs = lpc32xx_eth_device->regs;
+ int timeout, rx_index;
+
+ /* time out if receive descriptor array remains empty too long */
+ timeout = RX_TIMEOUT;
+ while (regs->rxproduceindex == regs->rxconsumeindex) {
+ if (timeout-- == 0)
+ return -1;
+ }
+
+ /* determine next receive packet index to use */
+ rx_index = regs->rxconsumeindex;
+
+ /* if data was valid, pass it on */
+ if (!(rx_stat[rx_index].statusinfo & RX_STAT_ERRORS))
+ NetReceive(&(rx_buf[rx_index*PKTSIZE_ALIGN]),
+ (rx_stat[rx_index].statusinfo & RX_STAT_RXSIZE)
+ + 1);
+
+ /* pass receive slot back to DMA engine */
+ rx_index = (rx_index + 1) % RX_BUF_COUNT;
+ writel(rx_index, ®s->rxconsumeindex);
+
+ /* reception successful */
+ return 0;
+}
+
+static int lpc32xx_eth_write_hwaddr(struct eth_device *dev)
+{
+ struct lpc32xx_eth_device *lpc32xx_eth_device =
+ container_of(dev, struct lpc32xx_eth_device, dev);
+ struct lpc32xx_eth_registers *regs = lpc32xx_eth_device->regs;
+
+ /* Save station address */
+ writel((unsigned long) (dev->enetaddr[0] |
+ (dev->enetaddr[1] << 8)), ®s->sa2);
+ writel((unsigned long) (dev->enetaddr[2] |
+ (dev->enetaddr[3] << 8)), ®s->sa1);
+ writel((unsigned long) (dev->enetaddr[4] |
+ (dev->enetaddr[5] << 8)), ®s->sa0);
+
+ return 0;
+}
+
+static int lpc32xx_eth_init(struct eth_device *dev)
+{
+ struct lpc32xx_eth_device *lpc32xx_eth_device =
+ container_of(dev, struct lpc32xx_eth_device, dev);
+ struct lpc32xx_eth_registers *regs = lpc32xx_eth_device->regs;
+ int index;
+
+ /* Release SOFT reset to let MII talk to PHY */
+ clrbits_le32(®s->mac1, MAC1_SOFT_RESET);
+
+ /* Configure Full/Half Duplex mode */
+ if (miiphy_duplex(dev->name, CONFIG_PHY_ADDR) == FULL) {
+ setbits_le32(®s->mac2, MAC2_FULL_DUPLEX);
+ setbits_le32(®s->command, COMMAND_FULL_DUPLEX);
+ writel(0x15, ®s->ipgt);
+ } else {
+ writel(0x12, ®s->ipgt);
+ }
+
+ /* Configure 100MBit/10MBit mode */
+ if (miiphy_speed(dev->name, CONFIG_PHY_ADDR) == _100BASET)
+ writel(SUPP_SPEED, ®s->supp);
+ else
+ writel(0, ®s->supp);
+
+ /* Initial MAC initialization */
+ writel(MAC1_PASS_ALL_RX_FRAMES, ®s->mac1);
+ writel(MAC2_PAD_CRC_ENABLE | MAC2_CRC_ENABLE, ®s->mac2);
+ writel(PKTSIZE_ALIGN, ®s->maxf);
+
+ /* Retries: 15 (0xF). Collision window: 57 (0x37). */
+ writel(0x370F, ®s->clrt);
+
+ /* Set IP gap pt 2 to default 0x12 but pt 1 to non-default 0 */
+ writel(0x0012, ®s->ipgr);
+
+ /* pass runt (smaller than 64 bytes) frames */
+ writel(COMMAND_PASSRUNTFRAME, ®s->command);
+
+ /* Save station address */
+ writel((unsigned long) (dev->enetaddr[0] |
+ (dev->enetaddr[1] << 8)), ®s->sa2);
+ writel((unsigned long) (dev->enetaddr[2] |
+ (dev->enetaddr[3] << 8)), ®s->sa1);
+ writel((unsigned long) (dev->enetaddr[4] |
+ (dev->enetaddr[5] << 8)), ®s->sa0);
+
+ /* set up transmit buffers */
+ for (index = 0; index < TX_BUF_COUNT; index++) {
+ tx_desc[index].control = 0;
+ tx_stat[index].statusinfo = 0;
+ }
+ writel((u32)tx_desc, (u32 *)®s->txdescriptor);
+ writel((u32)tx_stat, ®s->txstatus);
+ writel(TX_BUF_COUNT-1, ®s->txdescriptornumber);
+
+ /* set up receive buffers */
+ for (index = 0; index < RX_BUF_COUNT; index++) {
+ rx_desc[index].packet = (u32) (rx_buf+index*PKTSIZE_ALIGN);
+ rx_desc[index].control = PKTSIZE_ALIGN - 1;
+ rx_stat[index].statusinfo = 0;
+ rx_stat[index].statushashcrc = 0;
+ }
+ writel((u32)rx_desc, ®s->rxdescriptor);
+ writel((u32)rx_stat, ®s->rxstatus);
+ writel(RX_BUF_COUNT-1, ®s->rxdescriptornumber);
+
+ /* Enable broadcast and matching address packets */
+ writel(RXFILTERCTRL_ACCEPTBROADCAST |
+ RXFILTERCTRL_ACCEPTPERFECT, ®s->rxfilterctrl);
+
+ /* Clear and disable interrupts */
+ writel(0xFFFF, ®s->intclear);
+ writel(0, ®s->intenable);
+
+ /* Enable receive and transmit mode of MAC ethernet core */
+ setbits_le32(®s->command, COMMAND_RXENABLE | COMMAND_TXENABLE);
+ setbits_le32(®s->mac1, MAC1_RECV_ENABLE);
+
+ /*
+ * Perform a 'dummy' first send to work around Ethernet.1
+ * erratum (see ES_LPC3250 rev. 9 dated 1 June 2011).
+ * Use zeroed "index" variable as the dummy.
+ */
+
+ index = 0;
+ lpc32xx_eth_send(dev, &index, 4);
+
+ return 0;
+}
+
+static int lpc32xx_eth_halt(struct eth_device *dev)
+{
+ struct lpc32xx_eth_device *lpc32xx_eth_device =
+ container_of(dev, struct lpc32xx_eth_device, dev);
+ struct lpc32xx_eth_registers *regs = lpc32xx_eth_device->regs;
+
+ /* Reset all MAC logic */
+ writel(MAC1_RESETS, ®s->mac1);
+ writel(COMMAND_RESETS, ®s->command);
+ /* Let reset condition settle */
+ udelay(2000);
+
+ return 0;
+}
+
+#if defined(CONFIG_PHYLIB)
+int lpc32xx_eth_phylib_init(struct eth_device *dev, int phyid)
+{
+ struct mii_dev *bus;
+ struct phy_device *phydev;
+ int ret;
+
+ bus = mdio_alloc();
+ if (!bus) {
+ printf("mdio_alloc failed\n");
+ return -ENOMEM;
+ }
+ bus->read = lpc32xx_eth_phy_read;
+ bus->write = lpc32xx_eth_phy_write;
+ sprintf(bus->name, dev->name);
+
+ ret = mdio_register(bus);
+ if (ret) {
+ printf("mdio_register failed\n");
+ free(bus);
+ return -ENOMEM;
+ }
+
+ phydev = phy_connect(bus, phyid, dev, PHY_INTERFACE_MODE_MII);
+ if (!phydev) {
+ printf("phy_connect failed\n");
+ return -ENODEV;
+ }
+
+ phy_config(phydev);
+ phy_startup(phydev);
+
+ return 0;
+}
+#endif
+
+int lpc32xx_eth_initialize(bd_t *bis)
+{
+ struct eth_device *dev = &lpc32xx_eth.dev;
+ struct lpc32xx_eth_registers *regs = lpc32xx_eth.regs;
+
+ /*
+ * Set RMII management clock rate. With HCLK at 104 MHz and
+ * a divider of 28, this will be 3.72 MHz.
+ */
+
+ writel(MCFG_CLOCK_SELECT_DIV28, ®s->mcfg);
+
+ /* Reset all MAC logic */
+ writel(MAC1_RESETS, ®s->mac1);
+ writel(COMMAND_RESETS, ®s->command);
+
+ /* wait 10 ms for the whole I/F to reset */
+ udelay(10000);
+
+ /* must be less than sizeof(dev->name) */
+ strcpy(dev->name, "eth0");
+
+ dev->init = (void *)lpc32xx_eth_init;
+ dev->halt = (void *)lpc32xx_eth_halt;
+ dev->send = (void *)lpc32xx_eth_send;
+ dev->recv = (void *)lpc32xx_eth_recv;
+ dev->write_hwaddr = (void *)lpc32xx_eth_write_hwaddr;
+
+ /* Release SOFT reset to let MII talk to PHY */
+ clrbits_le32(®s->mac1, MAC1_SOFT_RESET);
+
+ /* register driver before talking to phy */
+ eth_register(dev);
+
+#if defined(CONFIG_PHYLIB)
+ lpc32xx_eth_phylib_init(dev, 0);
+#elif defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+ miiphy_register(dev->name, mii_reg_read, mii_reg_write);
+#endif
+
+ return 0;
+}
diff --git a/include/netdev.h b/include/netdev.h
index 90140bd..453c940 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -57,6 +57,7 @@ int greth_initialize(bd_t *bis);
void gt6426x_eth_initialize(bd_t *bis);
int ks8851_mll_initialize(u8 dev_num, int base_addr);
int lan91c96_initialize(u8 dev_num, int base_addr);
+int lpc32xx_eth_initialize(bd_t *bis);
int macb_eth_initialize(int id, void *regs, unsigned int phy_addr);
int mcdmafec_initialize(bd_t *bis);
int mcffec_initialize(bd_t *bis);
--
2.1.0
More information about the U-Boot
mailing list