/* * Copyright (C) 2006-2010, 2012 Freescale Semicondutor, Inc. * All rights reserved. * * Author: Andy Fleming <afleming@freescale.com> * * Based on 83xx/mpc8360e_pb.c by: * Li Yang <LeoLi@freescale.com> * Yin Olivia <Hong-hua.Yin@freescale.com> * * Description: * MPC85xx MDS board specific routines. * * 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. */ #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/errno.h> #include <linux/reboot.h> #include <linux/pci.h> #include <linux/kdev_t.h> #include <linux/major.h> #include <linux/console.h> #include <linux/delay.h> #include <linux/seq_file.h> #include <linux/initrd.h> #include <linux/fsl_devices.h> #include <linux/of_platform.h> #include <linux/of_device.h> #include <linux/phy.h> #include <linux/memblock.h> #include <linux/atomic.h> #include <asm/time.h> #include <asm/io.h> #include <asm/machdep.h> #include <asm/pci-bridge.h> #include <asm/irq.h> #include <mm/mmu_decl.h> #include <asm/prom.h> #include <asm/udbg.h> #include <sysdev/fsl_soc.h> #include <sysdev/fsl_pci.h> #include <sysdev/simple_gpio.h> #include <asm/qe.h> #include <asm/qe_ic.h> #include <asm/mpic.h> #include <asm/swiotlb.h> #include <asm/fsl_guts.h> #include "smp.h" #include "mpc85xx.h" #undef DEBUG #ifdef DEBUG #define DBG(fmt...) udbg_printf(fmt) #else #define DBG(fmt...) #endif #define MV88E1111_SCR 0x10 #define MV88E1111_SCR_125CLK 0x0010 static int mpc8568_fixup_125_clock(struct phy_device *phydev) { int scr; int err; /* Workaround for the 125 CLK Toggle */ scr = phy_read(phydev, MV88E1111_SCR); if (scr < 0) return scr; err = phy_write(phydev, MV88E1111_SCR, scr & ~(MV88E1111_SCR_125CLK)); if (err) return err; err = phy_write(phydev, MII_BMCR, BMCR_RESET); if (err) return err; scr = phy_read(phydev, MV88E1111_SCR); if (scr < 0) return scr; err = phy_write(phydev, MV88E1111_SCR, scr | 0x0008); return err; } static int mpc8568_mds_phy_fixups(struct phy_device *phydev) { int temp; int err; /* Errata */ err = phy_write(phydev,29, 0x0006); if (err) return err; temp = phy_read(phydev, 30); if (temp < 0) return temp; temp = (temp & (~0x8000)) | 0x4000; err = phy_write(phydev,30, temp); if (err) return err; err = phy_write(phydev,29, 0x000a); if (err) return err; temp = phy_read(phydev, 30); if (temp < 0) return temp; temp = phy_read(phydev, 30); if (temp < 0) return temp; temp &= ~0x0020; err = phy_write(phydev,30,temp); if (err) return err; /* Disable automatic MDI/MDIX selection */ temp = phy_read(phydev, 16); if (temp < 0) return temp; temp &= ~0x0060; err = phy_write(phydev,16,temp); return err; } /* ************************************************************************ * * Setup the architecture * */ #ifdef CONFIG_QUICC_ENGINE static void __init mpc85xx_mds_reset_ucc_phys(void) { struct device_node *np; static u8 __iomem *bcsr_regs; /* Map BCSR area */ np = of_find_node_by_name(NULL, "bcsr"); if (!np) return; bcsr_regs = of_iomap(np, 0); of_node_put(np); if (!bcsr_regs) return; if (machine_is(mpc8568_mds)) { #define BCSR_UCC1_GETH_EN (0x1 << 7) #define BCSR_UCC2_GETH_EN (0x1 << 7) #define BCSR_UCC1_MODE_MSK (0x3 << 4) #define BCSR_UCC2_MODE_MSK (0x3 << 0) /* Turn off UCC1 & UCC2 */ clrbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN); clrbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN); /* Mode is RGMII, all bits clear */ clrbits8(&bcsr_regs[11], BCSR_UCC1_MODE_MSK | BCSR_UCC2_MODE_MSK); /* Turn UCC1 & UCC2 on */ setbits8(&bcsr_regs[8], BCSR_UCC1_GETH_EN); setbits8(&bcsr_regs[9], BCSR_UCC2_GETH_EN); } else if (machine_is(mpc8569_mds)) { #define BCSR7_UCC12_GETHnRST (0x1 << 2) #define BCSR8_UEM_MARVELL_RST (0x1 << 1) #define BCSR_UCC_RGMII (0x1 << 6) #define BCSR_UCC_RTBI (0x1 << 5) /* * U-Boot mangles interrupt polarity for Marvell PHYs, * so reset built-in and UEM Marvell PHYs, this puts * the PHYs into their normal state. */ clrbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST); setbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST); setbits8(&bcsr_regs[7], BCSR7_UCC12_GETHnRST); clrbits8(&bcsr_regs[8], BCSR8_UEM_MARVELL_RST); for (np = NULL; (np = of_find_compatible_node(np, "network", "ucc_geth")) != NULL;) { const unsigned int *prop; int ucc_num; prop = of_get_property(np, "cell-index", NULL); if (prop == NULL) continue; ucc_num = *prop - 1; prop = of_get_property(np, "phy-connection-type", NULL); if (prop == NULL) continue; if (strcmp("rtbi", (const char *)prop) == 0) clrsetbits_8(&bcsr_regs[7 + ucc_num], BCSR_UCC_RGMII, BCSR_UCC_RTBI); } } else if (machine_is(p1021_mds)) { #define BCSR11_ENET_MICRST (0x1 << 5) /* Reset Micrel PHY */ clrbits8(&bcsr_regs[11], BCSR11_ENET_MICRST); setbits8(&bcsr_regs[11], BCSR11_ENET_MICRST); } iounmap(bcsr_regs); } static void __init mpc85xx_mds_qe_init(void) { struct device_node *np; np = of_find_compatible_node(NULL, NULL, "fsl,qe"); if (!np) { np = of_find_node_by_name(NULL, "qe"); if (!np) return; } if (!of_device_is_available(np)) { of_node_put(np); return; } qe_reset(); of_node_put(np); np = of_find_node_by_name(NULL, "par_io"); if (np) { struct device_node *ucc; par_io_init(np); of_node_put(np); for_each_node_by_name(ucc, "ucc") par_io_of_config(ucc); } mpc85xx_mds_reset_ucc_phys(); if (machine_is(p1021_mds)) { struct ccsr_guts __iomem *guts; np = of_find_node_by_name(NULL, "global-utilities"); if (np) { guts = of_iomap(np, 0); if (!guts) pr_err("mpc85xx-rdb: could not map global utilities register\n"); else{ /* P1021 has pins muxed for QE and other functions. To * enable QE UEC mode, we need to set bit QE0 for UCC1 * in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9 * and QE12 for QE MII management signals in PMUXCR * register. */ setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) | MPC85xx_PMUXCR_QE(3) | MPC85xx_PMUXCR_QE(9) | MPC85xx_PMUXCR_QE(12)); iounmap(guts); } of_node_put(np); } } } static void __init mpc85xx_mds_qeic_init(void) { struct device_node *np; np = of_find_compatible_node(NULL, NULL, "fsl,qe"); if (!of_device_is_available(np)) { of_node_put(np); return; } np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic"); if (!np) { np = of_find_node_by_type(NULL, "qeic"); if (!np) return; } if (machine_is(p1021_mds)) qe_ic_init(np, 0, qe_ic_cascade_low_mpic, qe_ic_cascade_high_mpic); else qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL); of_node_put(np); } #else static void __init mpc85xx_mds_qe_init(void) { } static void __init mpc85xx_mds_qeic_init(void) { } #endif /* CONFIG_QUICC_ENGINE */ static void __init mpc85xx_mds_setup_arch(void) { #ifdef CONFIG_PCI struct pci_controller *hose; struct device_node *np; #endif dma_addr_t max = 0xffffffff; if (ppc_md.progress) ppc_md.progress("mpc85xx_mds_setup_arch()", 0); #ifdef CONFIG_PCI for_each_node_by_type(np, "pci") { if (of_device_is_compatible(np, "fsl,mpc8540-pci") || of_device_is_compatible(np, "fsl,mpc8548-pcie")) { struct resource rsrc; of_address_to_resource(np, 0, &rsrc); if ((rsrc.start & 0xfffff) == 0x8000) fsl_add_bridge(np, 1); else fsl_add_bridge(np, 0); hose = pci_find_hose_for_OF_device(np); max = min(max, hose->dma_window_base_cur + hose->dma_window_size); } } #endif mpc85xx_smp_init(); mpc85xx_mds_qe_init(); #ifdef CONFIG_SWIOTLB if (memblock_end_of_DRAM() > max) { ppc_swiotlb_enable = 1; set_pci_dma_ops(&swiotlb_dma_ops); ppc_md.pci_dma_dev_setup = pci_dma_dev_setup_swiotlb; } #endif } static int __init board_fixups(void) { char phy_id[20]; char *compstrs[2] = {"fsl,gianfar-mdio", "fsl,ucc-mdio"}; struct device_node *mdio; struct resource res; int i; for (i = 0; i < ARRAY_SIZE(compstrs); i++) { mdio = of_find_compatible_node(NULL, NULL, compstrs[i]); of_address_to_resource(mdio, 0, &res); snprintf(phy_id, sizeof(phy_id), "%llx:%02x", (unsigned long long)res.start, 1); phy_register_fixup_for_id(phy_id, mpc8568_fixup_125_clock); phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); /* Register a workaround for errata */ snprintf(phy_id, sizeof(phy_id), "%llx:%02x", (unsigned long long)res.start, 7); phy_register_fixup_for_id(phy_id, mpc8568_mds_phy_fixups); of_node_put(mdio); } return 0; } machine_arch_initcall(mpc8568_mds, board_fixups); machine_arch_initcall(mpc8569_mds, board_fixups); static int __init mpc85xx_publish_devices(void) { if (machine_is(mpc8568_mds)) simple_gpiochip_init("fsl,mpc8568mds-bcsr-gpio"); if (machine_is(mpc8569_mds)) simple_gpiochip_init("fsl,mpc8569mds-bcsr-gpio"); return mpc85xx_common_publish_devices(); } machine_device_initcall(mpc8568_mds, mpc85xx_publish_devices); machine_device_initcall(mpc8569_mds, mpc85xx_publish_devices); machine_device_initcall(p1021_mds, mpc85xx_common_publish_devices); machine_arch_initcall(mpc8568_mds, swiotlb_setup_bus_notifier); machine_arch_initcall(mpc8569_mds, swiotlb_setup_bus_notifier); machine_arch_initcall(p1021_mds, swiotlb_setup_bus_notifier); static void __init mpc85xx_mds_pic_init(void) { struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU, 0, 256, " OpenPIC "); BUG_ON(mpic == NULL); mpic_init(mpic); mpc85xx_mds_qeic_init(); } static int __init mpc85xx_mds_probe(void) { unsigned long root = of_get_flat_dt_root(); return of_flat_dt_is_compatible(root, "MPC85xxMDS"); } define_machine(mpc8568_mds) { .name = "MPC8568 MDS", .probe = mpc85xx_mds_probe, .setup_arch = mpc85xx_mds_setup_arch, .init_IRQ = mpc85xx_mds_pic_init, .get_irq = mpic_get_irq, .restart = fsl_rstcr_restart, .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, #ifdef CONFIG_PCI .pcibios_fixup_bus = fsl_pcibios_fixup_bus, #endif }; static int __init mpc8569_mds_probe(void) { unsigned long root = of_get_flat_dt_root(); return of_flat_dt_is_compatible(root, "fsl,MPC8569EMDS"); } define_machine(mpc8569_mds) { .name = "MPC8569 MDS", .probe = mpc8569_mds_probe, .setup_arch = mpc85xx_mds_setup_arch, .init_IRQ = mpc85xx_mds_pic_init, .get_irq = mpic_get_irq, .restart = fsl_rstcr_restart, .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, #ifdef CONFIG_PCI .pcibios_fixup_bus = fsl_pcibios_fixup_bus, #endif }; static int __init p1021_mds_probe(void) { unsigned long root = of_get_flat_dt_root(); return of_flat_dt_is_compatible(root, "fsl,P1021MDS"); } define_machine(p1021_mds) { .name = "P1021 MDS", .probe = p1021_mds_probe, .setup_arch = mpc85xx_mds_setup_arch, .init_IRQ = mpc85xx_mds_pic_init, .get_irq = mpic_get_irq, .restart = fsl_rstcr_restart, .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, #ifdef CONFIG_PCI .pcibios_fixup_bus = fsl_pcibios_fixup_bus, #endif };