powerpc/p2041rdb: Add ethernet support on P2041RDB board

Add support for RGMII, SGMII and XAUI Ethernet on P2041RDB board.

The five dTSEC can be routed to two on-board RGMII phy, three on-board
SGMII phy or four SGMII phy on SGMII riser card according to different
serdes protocol configuration and board lane configuration. Also updated
the device tree to direct the Fmac MAC to the correct PHY.

Removed CONFIG_SYS_FMAN_FW as its not used anywhere.

Signed-off-by: Mingkai Hu <Mingkai.hu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 225 insertions, 0 deletions

diff --git a/board/freescale/p2041rdb/eth.c b/board/freescale/p2041rdb/eth.c
new file mode 100644
index 0000000..0a1dfa7
--- /dev/null
+++ b/board/freescale/p2041rdb/eth.c
@@ -0,0 +1,225 @@
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Author: Mingkai Hu <Mingkai.hu@freescale.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * The RGMII PHYs are provided by the two on-board PHY. The SGMII PHYs
+ * are provided by the three on-board PHY or by the standard Freescale
+ * four-port SGMII riser card. We need to change the phy-handle in the
+ * kernel dts file to point to the correct PHY according to serdes mux
+ * and serdes protocol selection.
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <asm/fsl_serdes.h>
+#include <fm_eth.h>
+#include <fsl_mdio.h>
+#include <malloc.h>
+#include <asm/fsl_dtsec.h>
+
+#include "cpld.h"
+#include "../common/fman.h"
+
+#ifdef CONFIG_FMAN_ENET
+/*
+ * Mapping of all 18 SERDES lanes to board slots. A value of '0' here means
+ * that the mapping must be determined dynamically, or that the lane maps to
+ * something other than a board slot
+ */
+static u8 lane_to_slot[] = {
+	0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0
+};
+
+static int riser_phy_addr[] = {
+	CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR,
+	CONFIG_SYS_FM1_DTSEC2_RISER_PHY_ADDR,
+	CONFIG_SYS_FM1_DTSEC3_RISER_PHY_ADDR,
+	CONFIG_SYS_FM1_DTSEC4_RISER_PHY_ADDR,
+};
+
+/*
+ * Initialize the lane_to_slot[] array.
+ *
+ * On the P2040RDB board the mapping is controlled by CPLD register.
+ */
+static void initialize_lane_to_slot(void)
+{
+	u8 mux = CPLD_READ(serdes_mux);
+
+	lane_to_slot[6] = (mux & SERDES_MUX_LANE_6_MASK) ? 0 : 1;
+	lane_to_slot[10] = (mux & SERDES_MUX_LANE_A_MASK) ? 0 : 2;
+	lane_to_slot[12] = (mux & SERDES_MUX_LANE_C_MASK) ? 0 : 2;
+	lane_to_slot[13] = (mux & SERDES_MUX_LANE_D_MASK) ? 0 : 2;
+}
+
+/*
+ * Given the following ...
+ *
+ * 1) A pointer to an Fman Ethernet node (as identified by the 'compat'
+ * compatible string and 'addr' physical address)
+ *
+ * 2) An Fman port
+ *
+ * ... update the phy-handle property of the Ethernet node to point to the
+ * right PHY.  This assumes that we already know the PHY for each port.
+ *
+ * The offset of the Fman Ethernet node is also passed in for convenience, but
+ * it is not used, and we recalculate the offset anyway.
+ *
+ * Note that what we call "Fman ports" (enum fm_port) is really an Fman MAC.
+ * Inside the Fman, "ports" are things that connect to MACs.  We only call them
+ * ports in U-Boot because on previous Ethernet devices (e.g. Gianfar), MACs
+ * and ports are the same thing.
+ *
+ */
+void board_ft_fman_fixup_port(void *fdt, char *compat, phys_addr_t addr,
+			      enum fm_port port, int offset)
+{
+	phy_interface_t intf = fm_info_get_enet_if(port);
+	char phy[16];
+
+	/* The RGMII PHY is identified by the MAC connected to it */
+	if (intf == PHY_INTERFACE_MODE_RGMII) {
+		sprintf(phy, "phy_rgmii_%u", port == FM1_DTSEC5 ? 0 : 1);
+		fdt_set_phy_handle(fdt, compat, addr, phy);
+	}
+
+	/* The SGMII PHY is identified by the MAC connected to it */
+	if (intf == PHY_INTERFACE_MODE_SGMII) {
+		int lane = serdes_get_first_lane(SGMII_FM1_DTSEC1 + port);
+		u8 slot;
+		if (lane < 0)
+			return;
+		slot = lane_to_slot[lane];
+		if (slot) {
+			sprintf(phy, "phy_sgmii_%x",
+					CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR
+					+ (port - FM1_DTSEC1));
+			fdt_set_phy_handle(fdt, compat, addr, phy);
+		} else {
+			sprintf(phy, "phy_sgmii_%x",
+					CONFIG_SYS_FM1_DTSEC1_PHY_ADDR
+					+ (port - FM1_DTSEC1));
+			fdt_set_phy_handle(fdt, compat, addr, phy);
+		}
+	}
+
+	if (intf == PHY_INTERFACE_MODE_XGMII) {
+		/* XAUI */
+		int lane = serdes_get_first_lane(XAUI_FM1);
+		if (lane >= 0) {
+			/* The XAUI PHY is identified by the slot */
+			sprintf(phy, "phy_xgmii_%u", lane_to_slot[lane]);
+			fdt_set_phy_handle(fdt, compat, addr, phy);
+		}
+	}
+}
+#endif /* #ifdef CONFIG_FMAN_ENET */
+
+int board_eth_init(bd_t *bis)
+{
+#ifdef CONFIG_FMAN_ENET
+	struct dtsec *tsec = (void *)CONFIG_SYS_FSL_FM1_DTSEC1_ADDR;
+	struct fsl_pq_mdio_info dtsec_mdio_info;
+	struct tgec_mdio_info tgec_mdio_info;
+	unsigned int i, slot;
+	int lane;
+
+	printf("Initializing Fman\n");
+
+	initialize_lane_to_slot();
+
+	/*
+	 * Set TBIPA on FM1@DTSEC1.  This is needed for configurations
+	 * where FM1@DTSEC1 isn't used directly, since it provides
+	 * MDIO for other ports.
+	 */
+	out_be32(&tsec->tbipa, CONFIG_SYS_TBIPA_VALUE);
+
+	dtsec_mdio_info.regs =
+		(struct tsec_mii_mng *)CONFIG_SYS_FM1_DTSEC1_MDIO_ADDR;
+	dtsec_mdio_info.name = DEFAULT_FM_MDIO_NAME;
+
+	/* Register the real 1G MDIO bus */
+	fsl_pq_mdio_init(bis, &dtsec_mdio_info);
+
+	tgec_mdio_info.regs =
+		(struct tgec_mdio_controller *)CONFIG_SYS_FM1_TGEC_MDIO_ADDR;
+	tgec_mdio_info.name = DEFAULT_FM_TGEC_MDIO_NAME;
+
+	/* Register the real 10G MDIO bus */
+	fm_tgec_mdio_init(bis, &tgec_mdio_info);
+
+	/*
+	 * Program the three on-board SGMII PHY addresses. If the SGMII Riser
+	 * card used, we'll override the PHY address later. For any DTSEC that
+	 * is RGMII, we'll also override its PHY address later. We assume that
+	 * DTSEC4 and DTSEC5 are used for RGMII.
+	 */
+	fm_info_set_phy_address(FM1_DTSEC1, CONFIG_SYS_FM1_DTSEC1_PHY_ADDR);
+	fm_info_set_phy_address(FM1_DTSEC2, CONFIG_SYS_FM1_DTSEC2_PHY_ADDR);
+	fm_info_set_phy_address(FM1_DTSEC3, CONFIG_SYS_FM1_DTSEC3_PHY_ADDR);
+
+	for (i = FM1_DTSEC1; i < FM1_DTSEC1 + CONFIG_SYS_NUM_FM1_DTSEC; i++) {
+		int idx = i - FM1_DTSEC1;
+
+		switch (fm_info_get_enet_if(i)) {
+		case PHY_INTERFACE_MODE_SGMII:
+			lane = serdes_get_first_lane(SGMII_FM1_DTSEC1 + idx);
+			if (lane < 0)
+				break;
+			slot = lane_to_slot[lane];
+			if (slot)
+				fm_info_set_phy_address(i, riser_phy_addr[i]);
+			break;
+		case PHY_INTERFACE_MODE_RGMII:
+			/* Only DTSEC4 and DTSEC5 can be routed to RGMII */
+			fm_info_set_phy_address(i, i == FM1_DTSEC5 ?
+					CONFIG_SYS_FM1_DTSEC5_PHY_ADDR :
+					CONFIG_SYS_FM1_DTSEC4_PHY_ADDR);
+			break;
+		default:
+			printf("Fman1: DTSEC%u set to unknown interface %i\n",
+			       idx + 1, fm_info_get_enet_if(i));
+			break;
+		}
+
+		fm_info_set_mdio(i,
+			miiphy_get_dev_by_name(DEFAULT_FM_MDIO_NAME));
+	}
+
+	lane = serdes_get_first_lane(XAUI_FM1);
+	if (lane >= 0) {
+		slot = lane_to_slot[lane];
+		if (slot)
+			fm_info_set_phy_address(FM1_10GEC1,
+					CONFIG_SYS_FM1_10GEC1_PHY_ADDR);
+	}
+
+	fm_info_set_mdio(FM1_10GEC1,
+			miiphy_get_dev_by_name(DEFAULT_FM_TGEC_MDIO_NAME));
+	cpu_eth_init(bis);
+#endif
+
+	return pci_eth_init(bis);
+}