192 lines
4.4 KiB
C
192 lines
4.4 KiB
C
/*
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* Copyright 2008 DENX Software Engineering GmbH
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* Author: Heiko Schocher <hs@denx.de>
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*
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* Description:
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* Keymile KMETER1 board specific routines.
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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/stddef.h>
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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/reboot.h>
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#include <linux/pci.h>
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#include <linux/kdev_t.h>
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#include <linux/major.h>
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#include <linux/console.h>
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#include <linux/delay.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/initrd.h>
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#include <linux/of_platform.h>
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#include <linux/of_device.h>
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#include <asm/system.h>
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#include <asm/atomic.h>
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#include <asm/time.h>
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#include <asm/io.h>
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#include <asm/machdep.h>
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#include <asm/ipic.h>
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#include <asm/irq.h>
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#include <asm/prom.h>
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#include <asm/udbg.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include <asm/qe.h>
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#include <asm/qe_ic.h>
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#include "mpc83xx.h"
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#define SVR_REV(svr) (((svr) >> 0) & 0xFFFF) /* Revision field */
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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 kmeter1_setup_arch(void)
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{
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struct device_node *np;
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if (ppc_md.progress)
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ppc_md.progress("kmeter1_setup_arch()", 0);
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#ifdef CONFIG_PCI
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for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
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mpc83xx_add_bridge(np);
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#endif
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#ifdef CONFIG_QUICC_ENGINE
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qe_reset();
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np = of_find_node_by_name(NULL, "par_io");
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if (np != NULL) {
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par_io_init(np);
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of_node_put(np);
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for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
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par_io_of_config(np);
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}
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np = of_find_compatible_node(NULL, "network", "ucc_geth");
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if (np != NULL) {
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uint svid;
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/* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */
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svid = mfspr(SPRN_SVR);
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if (SVR_REV(svid) == 0x0021) {
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struct device_node *np_par;
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struct resource res;
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void __iomem *base;
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int ret;
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np_par = of_find_node_by_name(NULL, "par_io");
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if (np_par == NULL) {
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printk(KERN_WARNING "%s couldn;t find par_io node\n",
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__func__);
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return;
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}
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/* Map Parallel I/O ports registers */
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ret = of_address_to_resource(np_par, 0, &res);
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if (ret) {
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printk(KERN_WARNING "%s couldn;t map par_io registers\n",
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__func__);
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return;
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}
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base = ioremap(res.start, res.end - res.start + 1);
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/*
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* IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
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* IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1)
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*/
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setbits32((base + 0xa8), 0x0c003000);
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/*
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* IMMR + 0x14AC[20:27] = 10101010
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* (data delay for both UCC's)
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*/
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clrsetbits_be32((base + 0xac), 0xff0, 0xaa0);
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iounmap(base);
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of_node_put(np_par);
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}
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of_node_put(np);
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}
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#endif /* CONFIG_QUICC_ENGINE */
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}
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static struct of_device_id kmeter_ids[] = {
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{ .type = "soc", },
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{ .compatible = "soc", },
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{ .compatible = "simple-bus", },
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{ .type = "qe", },
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{ .compatible = "fsl,qe", },
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{},
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};
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static int __init kmeter_declare_of_platform_devices(void)
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{
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/* Publish the QE devices */
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of_platform_bus_probe(NULL, kmeter_ids, NULL);
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return 0;
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}
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machine_device_initcall(kmeter1, kmeter_declare_of_platform_devices);
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static void __init kmeter1_init_IRQ(void)
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{
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struct device_node *np;
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np = of_find_compatible_node(NULL, NULL, "fsl,pq2pro-pic");
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if (!np) {
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np = of_find_node_by_type(NULL, "ipic");
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if (!np)
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return;
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}
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ipic_init(np, 0);
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/* Initialize the default interrupt mapping priorities,
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* in case the boot rom changed something on us.
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*/
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ipic_set_default_priority();
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of_node_put(np);
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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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np = of_find_node_by_type(NULL, "qeic");
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if (!np)
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return;
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}
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qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
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of_node_put(np);
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#endif /* CONFIG_QUICC_ENGINE */
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}
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/*
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* Called very early, MMU is off, device-tree isn't unflattened
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*/
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static int __init kmeter1_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, "keymile,KMETER1");
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}
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define_machine(kmeter1) {
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.name = "KMETER1",
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.probe = kmeter1_probe,
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.setup_arch = kmeter1_setup_arch,
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.init_IRQ = kmeter1_init_IRQ,
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.get_irq = ipic_get_irq,
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.restart = mpc83xx_restart,
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.time_init = mpc83xx_time_init,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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};
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