149 lines
3.6 KiB
C
149 lines
3.6 KiB
C
/*
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* Copyright 2010-2011, 2013 Freescale Semiconductor, Inc.
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*
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* Author: Michael Johnston <michael.johnston@freescale.com>
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*
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* Description:
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* TWR-P102x Board Setup
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/fsl/guts.h>
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#include <linux/pci.h>
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#include <linux/of_platform.h>
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#include <asm/pci-bridge.h>
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#include <asm/udbg.h>
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#include <asm/mpic.h>
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#include <soc/fsl/qe/qe.h>
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#include <soc/fsl/qe/qe_ic.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include "smp.h"
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#include "mpc85xx.h"
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static void __init twr_p1025_pic_init(void)
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{
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struct mpic *mpic;
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#ifdef CONFIG_QUICC_ENGINE
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struct device_node *np;
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#endif
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mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
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MPIC_SINGLE_DEST_CPU,
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0, 256, " OpenPIC ");
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BUG_ON(mpic == NULL);
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mpic_init(mpic);
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#ifdef CONFIG_QUICC_ENGINE
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np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
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if (np) {
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qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
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qe_ic_cascade_high_mpic);
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of_node_put(np);
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} else
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pr_err("Could not find qe-ic node\n");
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#endif
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}
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/* ************************************************************************
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*
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* Setup the architecture
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*
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*/
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static void __init twr_p1025_setup_arch(void)
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{
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#ifdef CONFIG_QUICC_ENGINE
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struct device_node *np;
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#endif
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if (ppc_md.progress)
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ppc_md.progress("twr_p1025_setup_arch()", 0);
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mpc85xx_smp_init();
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fsl_pci_assign_primary();
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#ifdef CONFIG_QUICC_ENGINE
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mpc85xx_qe_init();
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mpc85xx_qe_par_io_init();
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#if IS_ENABLED(CONFIG_UCC_GETH) || IS_ENABLED(CONFIG_SERIAL_QE)
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if (machine_is(twr_p1025)) {
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struct ccsr_guts __iomem *guts;
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np = of_find_compatible_node(NULL, NULL, "fsl,p1021-guts");
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if (np) {
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guts = of_iomap(np, 0);
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if (!guts)
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pr_err("twr_p1025: could not map global utilities register\n");
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else {
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/* P1025 has pins muxed for QE and other functions. To
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* enable QE UEC mode, we need to set bit QE0 for UCC1
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* in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9
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* and QE12 for QE MII management signals in PMUXCR
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* register.
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* Set QE mux bits in PMUXCR */
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setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) |
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MPC85xx_PMUXCR_QE(3) |
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MPC85xx_PMUXCR_QE(9) |
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MPC85xx_PMUXCR_QE(12));
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iounmap(guts);
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#if IS_ENABLED(CONFIG_SERIAL_QE)
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/* On P1025TWR board, the UCC7 acted as UART port.
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* However, The UCC7's CTS pin is low level in default,
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* it will impact the transmission in full duplex
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* communication. So disable the Flow control pin PA18.
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* The UCC7 UART just can use RXD and TXD pins.
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*/
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par_io_config_pin(0, 18, 0, 0, 0, 0);
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#endif
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/* Drive PB29 to CPLD low - CPLD will then change
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* muxing from LBC to QE */
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par_io_config_pin(1, 29, 1, 0, 0, 0);
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par_io_data_set(1, 29, 0);
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}
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of_node_put(np);
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}
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}
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#endif
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#endif /* CONFIG_QUICC_ENGINE */
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pr_info("TWR-P1025 board from Freescale Semiconductor\n");
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}
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machine_arch_initcall(twr_p1025, mpc85xx_common_publish_devices);
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static int __init twr_p1025_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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return of_flat_dt_is_compatible(root, "fsl,TWR-P1025");
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}
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define_machine(twr_p1025) {
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.name = "TWR-P1025",
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.probe = twr_p1025_probe,
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.setup_arch = twr_p1025_setup_arch,
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.init_IRQ = twr_p1025_pic_init,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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#endif
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.get_irq = mpic_get_irq,
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.restart = fsl_rstcr_restart,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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};
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