fec_mxc: add support for MX51 processor

The patch add support for the Freescale mx51 processor
to the FEC ethernet driver.

Signed-off-by: Stefano Babic <sbabic@denx.de>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 19116f253ab0233cd47640d8ae4ef11189c85310..446076fea117a39b71fa8ceded99e7f7dd441065 100644 (file)
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -108,6 +108,17 @@ static int fec_miiphy_read(char *dev, uint8_t phyAddr, uint8_t regAddr,
        return 0;
 }
 
+static void fec_mii_setspeed(struct fec_priv *fec)
+{
+       /*
+        * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
+        * and do not drop the Preamble.
+        */
+       writel((((imx_get_fecclk() / 1000000) + 2) / 5) << 1,
+                       &fec->eth->mii_speed);
+       debug("fec_init: mii_speed %#lx\n",
+                       fec->eth->mii_speed);
+}
 static int fec_miiphy_write(char *dev, uint8_t phyAddr, uint8_t regAddr,
                uint16_t data)
 {
@@ -236,7 +247,7 @@ static int fec_rbd_init(struct fec_priv *fec, int count, int size)
                fec->rdb_ptr = malloc(size * count + DB_DATA_ALIGNMENT);
        p = (uint32_t)fec->rdb_ptr;
        if (!p) {
-               puts("fec_imx27: not enough malloc memory!\n");
+               puts("fec_mxc: not enough malloc memory\n");
                return -ENOMEM;
        }
        memset((void *)p, 0, size * count + DB_DATA_ALIGNMENT);
@@ -299,6 +310,13 @@ static void fec_rbd_clean(int last, struct fec_bd *pRbd)
 
 static int fec_get_hwaddr(struct eth_device *dev, unsigned char *mac)
 {
+/*
+ * The MX27 can store the mac address in internal eeprom
+ * This mechanism is not supported now by MX51
+ */
+#ifdef CONFIG_MX51
+       return -1;
+#else
        struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
        int i;
 
@@ -306,10 +324,12 @@ static int fec_get_hwaddr(struct eth_device *dev, unsigned char *mac)
                mac[6-1-i] = readl(&iim->iim_bank_area0[IIM0_MAC + i]);
 
        return is_valid_ether_addr(mac);
+#endif
 }
 
-static int fec_set_hwaddr(struct eth_device *dev, unsigned char *mac)
+static int fec_set_hwaddr(struct eth_device *dev)
 {
+       uchar *mac = dev->enetaddr;
        struct fec_priv *fec = (struct fec_priv *)dev->priv;
 
        writel(0, &fec->eth->iaddr1);
@@ -373,7 +393,7 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
                                sizeof(struct fec_bd) + DB_ALIGNMENT);
        base = (uint32_t)fec->base_ptr;
        if (!base) {
-               puts("fec_imx27: not enough malloc memory!\n");
+               puts("fec_mxc: not enough malloc memory\n");
                return -ENOMEM;
        }
        memset((void *)base, 0, (2 + FEC_RBD_NUM) *
@@ -411,14 +431,8 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
                 * Frame length=1518; MII mode;
                 */
                writel(0x05ee0024, &fec->eth->r_cntrl); /* FIXME 0x05ee0004 */
-               /*
-                * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
-                * and do not drop the Preamble.
-                */
-               writel((((imx_get_ahbclk() / 1000000) + 2) / 5) << 1,
-                               &fec->eth->mii_speed);
-               debug("fec_init: mii_speed %#lx\n",
-                               (((imx_get_ahbclk() / 1000000) + 2) / 5) << 1);
+
+               fec_mii_setspeed(fec);
        }
        /*
         * Set Opcode/Pause Duration Register
@@ -460,6 +474,7 @@ static int fec_init(struct eth_device *dev, bd_t* bd)
                miiphy_restart_aneg(dev);
 
        fec_open(dev);
+       fec_set_hwaddr(dev);
        return 0;
 }
 
@@ -522,7 +537,7 @@ static int fec_send(struct eth_device *dev, volatile void* packet, int length)
         * Check for valid length of data.
         */
        if ((length > 1500) || (length <= 0)) {
-               printf("Payload (%d) to large!\n", length);
+               printf("Payload (%d) too large\n", length);
                return -1;
        }
 
@@ -651,22 +666,14 @@ static int fec_recv(struct eth_device *dev)
 
 static int fec_probe(bd_t *bd)
 {
-       struct pll_regs *pll = (struct pll_regs *)IMX_PLL_BASE;
        struct eth_device *edev;
        struct fec_priv *fec = &gfec;
-       unsigned char ethaddr_str[20];
        unsigned char ethaddr[6];
-       char *tmp = getenv("ethaddr");
-       char *end;
-
-       /* enable FEC clock */
-       writel(readl(&pll->pccr1) | PCCR1_HCLK_FEC, &pll->pccr1);
-       writel(readl(&pll->pccr0) | PCCR0_FEC_EN, &pll->pccr0);
 
        /* create and fill edev struct */
        edev = (struct eth_device *)malloc(sizeof(struct eth_device));
        if (!edev) {
-               puts("fec_imx27: not enough malloc memory!\n");
+               puts("fec_mxc: not enough malloc memory\n");
                return -ENOMEM;
        }
        edev->priv = fec;
@@ -702,14 +709,7 @@ static int fec_probe(bd_t *bd)
         * Frame length=1518; MII mode;
         */
        writel(0x05ee0024, &fec->eth->r_cntrl); /* FIXME 0x05ee0004 */
-       /*
-        * Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
-        * and do not drop the Preamble.
-        */
-       writel((((imx_get_ahbclk() / 1000000) + 2) / 5) << 1,
-                       &fec->eth->mii_speed);
-       debug("fec_init: mii_speed %#lx\n",
-                       (((imx_get_ahbclk() / 1000000) + 2) / 5) << 1);
+       fec_mii_setspeed(fec);
 
        sprintf(edev->name, "FEC_MXC");
 
@@ -717,20 +717,11 @@ static int fec_probe(bd_t *bd)
 
        eth_register(edev);
 
-       if ((NULL != tmp) && (12 <= strlen(tmp))) {
-               int i;
-               /* convert MAC from string to int */
-               for (i = 0; i < 6; i++) {
-                       ethaddr[i] = tmp ? simple_strtoul(tmp, &end, 16) : 0;
-                       if (tmp)
-                               tmp = (*end) ? end + 1 : end;
-               }
-       } else if (fec_get_hwaddr(edev, ethaddr) == 0) {
+       if (fec_get_hwaddr(edev, ethaddr) == 0) {
                printf("got MAC address from EEPROM: %pM\n", ethaddr);
-               setenv("ethaddr", (char *)ethaddr_str);
+               memcpy(edev->enetaddr, ethaddr, 6);
+               fec_set_hwaddr(edev);
        }
-       memcpy(edev->enetaddr, ethaddr, 6);
-       fec_set_hwaddr(edev, ethaddr);
 
        return 0;
 }