GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/board/freescale/p2041rdb/eth.c

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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2011 Freescale Semiconductor, Inc.
+ * Author: Mingkai Hu <Mingkai.hu@freescale.com>
+ */
+
+/*
+ * 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 <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 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();
+
+	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);
+}