120 lines
2.7 KiB
C
120 lines
2.7 KiB
C
/*
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* Copyright 2010-2011, 2013 Freescale Semiconductor, Inc.
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*
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* Author: Roy Zang <tie-fei.zang@freescale.com>
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*
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* Description:
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* P1023 RDB 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/pci.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/fsl_devices.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/time.h>
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#include <asm/machdep.h>
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#include <asm/pci-bridge.h>
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#include <mm/mmu_decl.h>
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#include <asm/prom.h>
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#include <asm/udbg.h>
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#include <asm/mpic.h>
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#include "smp.h"
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include "mpc85xx.h"
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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 mpc85xx_rdb_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("p1023_rdb_setup_arch()", 0);
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/* Map BCSR area */
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np = of_find_node_by_name(NULL, "bcsr");
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if (np != NULL) {
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static u8 __iomem *bcsr_regs;
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bcsr_regs = of_iomap(np, 0);
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of_node_put(np);
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if (!bcsr_regs) {
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printk(KERN_ERR
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"BCSR: Failed to map bcsr register space\n");
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return;
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} else {
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#define BCSR15_I2C_BUS0_SEG_CLR 0x07
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#define BCSR15_I2C_BUS0_SEG2 0x02
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/*
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* Note: Accessing exclusively i2c devices.
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*
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* The i2c controller selects initially ID EEPROM in the u-boot;
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* but if menu configuration selects RTC support in the kernel,
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* the i2c controller switches to select RTC chip in the kernel.
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*/
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#ifdef CONFIG_RTC_CLASS
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/* Enable RTC chip on the segment #2 of i2c */
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clrbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG_CLR);
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setbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG2);
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#endif
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iounmap(bcsr_regs);
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}
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}
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mpc85xx_smp_init();
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fsl_pci_assign_primary();
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}
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machine_arch_initcall(p1023_rdb, mpc85xx_common_publish_devices);
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static void __init mpc85xx_rdb_pic_init(void)
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{
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struct mpic *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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}
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static int __init p1023_rdb_probe(void)
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{
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return of_machine_is_compatible("fsl,P1023RDB");
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}
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define_machine(p1023_rdb) {
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.name = "P1023 RDB",
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.probe = p1023_rdb_probe,
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.setup_arch = mpc85xx_rdb_setup_arch,
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.init_IRQ = mpc85xx_rdb_pic_init,
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.get_irq = mpic_get_irq,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
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#endif
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};
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