diff options
Diffstat (limited to 'arch/powerpc/platforms/83xx/mpc836x_mds.c')
| -rw-r--r-- | arch/powerpc/platforms/83xx/mpc836x_mds.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/83xx/mpc836x_mds.c b/arch/powerpc/platforms/83xx/mpc836x_mds.c new file mode 100644 index 000000000000..526ed090a446 --- /dev/null +++ b/arch/powerpc/platforms/83xx/mpc836x_mds.c @@ -0,0 +1,206 @@ +/* + * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved. + * + * Author: Li Yang <LeoLi@freescale.com> + * Yin Olivia <Hong-hua.Yin@freescale.com> + * + * Description: + * MPC8360E MDS board specific routines. + * + * Changelog: + * Jun 21, 2006 Initial version + * + * 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/root_dev.h> +#include <linux/initrd.h> + +#include <asm/of_device.h> +#include <asm/of_platform.h> +#include <asm/system.h> +#include <asm/atomic.h> +#include <asm/time.h> +#include <asm/io.h> +#include <asm/machdep.h> +#include <asm/ipic.h> +#include <asm/bootinfo.h> +#include <asm/irq.h> +#include <asm/prom.h> +#include <asm/udbg.h> +#include <sysdev/fsl_soc.h> +#include <asm/qe.h> +#include <asm/qe_ic.h> + +#include "mpc83xx.h" + +#undef DEBUG +#ifdef DEBUG +#define DBG(fmt...) udbg_printf(fmt) +#else +#define DBG(fmt...) +#endif + +#ifndef CONFIG_PCI +unsigned long isa_io_base = 0; +unsigned long isa_mem_base = 0; +#endif + +static u8 *bcsr_regs = NULL; + +/* ************************************************************************ + * + * Setup the architecture + * + */ +static void __init mpc836x_mds_setup_arch(void) +{ + struct device_node *np; + + if (ppc_md.progress) + ppc_md.progress("mpc836x_mds_setup_arch()", 0); + + /* Map BCSR area */ + np = of_find_node_by_name(NULL, "bcsr"); + if (np != 0) { + struct resource res; + + of_address_to_resource(np, 0, &res); + bcsr_regs = ioremap(res.start, res.end - res.start +1); + of_node_put(np); + } + +#ifdef CONFIG_PCI + for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) + add_bridge(np); + ppc_md.pci_exclude_device = mpc83xx_exclude_device; +#endif + +#ifdef CONFIG_QUICC_ENGINE + qe_reset(); + + if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) { + par_io_init(np); + of_node_put(np); + + for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) + par_io_of_config(np); + } + + if ((np = of_find_compatible_node(NULL, "network", "ucc_geth")) + != NULL){ + /* Reset the Ethernet PHY */ + bcsr_regs[9] &= ~0x20; + udelay(1000); + bcsr_regs[9] |= 0x20; + iounmap(bcsr_regs); + of_node_put(np); + } + +#endif /* CONFIG_QUICC_ENGINE */ +} + +static struct of_device_id mpc836x_ids[] = { + { .type = "soc", }, + { .compatible = "soc", }, + { .type = "qe", }, + {}, +}; + +static int __init mpc836x_declare_of_platform_devices(void) +{ + if (!machine_is(mpc836x_mds)) + return 0; + + /* Publish the QE devices */ + of_platform_bus_probe(NULL, mpc836x_ids, NULL); + + return 0; +} +device_initcall(mpc836x_declare_of_platform_devices); + +static void __init mpc836x_mds_init_IRQ(void) +{ + struct device_node *np; + + np = of_find_node_by_type(NULL, "ipic"); + if (!np) + return; + + ipic_init(np, 0); + + /* Initialize the default interrupt mapping priorities, + * in case the boot rom changed something on us. + */ + ipic_set_default_priority(); + of_node_put(np); + +#ifdef CONFIG_QUICC_ENGINE + np = of_find_node_by_type(NULL, "qeic"); + if (!np) + return; + + qe_ic_init(np, 0); + of_node_put(np); +#endif /* CONFIG_QUICC_ENGINE */ +} + +#if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374) +extern ulong ds1374_get_rtc_time(void); +extern int ds1374_set_rtc_time(ulong); + +static int __init mpc8360_rtc_hookup(void) +{ + struct timespec tv; + + if (!machine_is(mpc836x_mds)) + return 0; + + ppc_md.get_rtc_time = ds1374_get_rtc_time; + ppc_md.set_rtc_time = ds1374_set_rtc_time; + + tv.tv_nsec = 0; + tv.tv_sec = (ppc_md.get_rtc_time) (); + do_settimeofday(&tv); + + return 0; +} + +late_initcall(mpc8360_rtc_hookup); +#endif + +/* + * Called very early, MMU is off, device-tree isn't unflattened + */ +static int __init mpc836x_mds_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + return of_flat_dt_is_compatible(root, "MPC836xMDS"); +} + +define_machine(mpc836x_mds) { + .name = "MPC836x MDS", + .probe = mpc836x_mds_probe, + .setup_arch = mpc836x_mds_setup_arch, + .init_IRQ = mpc836x_mds_init_IRQ, + .get_irq = ipic_get_irq, + .restart = mpc83xx_restart, + .time_init = mpc83xx_time_init, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; |