| David Gibson | a1d0d98 | 2011-04-14 22:32:06 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008-2011, IBM Corporation |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | */ |
| 9 | |
| 10 | #include <linux/delay.h> |
| 11 | #include <linux/init.h> |
| 12 | #include <linux/irq.h> |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/mm.h> |
| 15 | #include <linux/of.h> |
| 16 | #include <linux/smp.h> |
| 17 | |
| 18 | #include <asm/machdep.h> |
| 19 | #include <asm/system.h> |
| 20 | #include <asm/time.h> |
| 21 | #include <asm/udbg.h> |
| 22 | |
| 23 | #include "ics.h" |
| 24 | #include "wsp.h" |
| 25 | |
| 26 | |
| 27 | static void psr2_spin(void) |
| 28 | { |
| 29 | hard_irq_disable(); |
| 30 | for (;;) ; |
| 31 | } |
| 32 | |
| 33 | static void psr2_restart(char *cmd) |
| 34 | { |
| 35 | psr2_spin(); |
| 36 | } |
| 37 | |
| 38 | static int psr2_probe_devices(void) |
| 39 | { |
| 40 | struct device_node *np; |
| 41 | |
| 42 | /* Our RTC is a ds1500. It seems to be programatically compatible |
| 43 | * with the ds1511 for which we have a driver so let's use that |
| 44 | */ |
| 45 | np = of_find_compatible_node(NULL, NULL, "dallas,ds1500"); |
| 46 | if (np != NULL) { |
| 47 | struct resource res; |
| 48 | if (of_address_to_resource(np, 0, &res) == 0) |
| 49 | platform_device_register_simple("ds1511", 0, &res, 1); |
| 50 | } |
| 51 | return 0; |
| 52 | } |
| 53 | machine_arch_initcall(psr2_md, psr2_probe_devices); |
| 54 | |
| 55 | static void __init psr2_setup_arch(void) |
| 56 | { |
| 57 | /* init to some ~sane value until calibrate_delay() runs */ |
| 58 | loops_per_jiffy = 50000000; |
| 59 | |
| 60 | scom_init_wsp(); |
| 61 | |
| 62 | /* Setup SMP callback */ |
| 63 | #ifdef CONFIG_SMP |
| 64 | a2_setup_smp(); |
| 65 | #endif |
| Benjamin Herrenschmidt | f352c72 | 2011-08-08 12:30:54 +0000 | [diff] [blame] | 66 | #ifdef CONFIG_PCI |
| 67 | wsp_setup_pci(); |
| 68 | #endif |
| 69 | |
| David Gibson | a1d0d98 | 2011-04-14 22:32:06 +0000 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | static int __init psr2_probe(void) |
| 73 | { |
| 74 | unsigned long root = of_get_flat_dt_root(); |
| 75 | |
| 76 | if (!of_flat_dt_is_compatible(root, "ibm,psr2")) |
| 77 | return 0; |
| 78 | |
| 79 | return 1; |
| 80 | } |
| 81 | |
| 82 | static void __init psr2_init_irq(void) |
| 83 | { |
| 84 | wsp_init_irq(); |
| 85 | opb_pic_init(); |
| 86 | } |
| 87 | |
| 88 | define_machine(psr2_md) { |
| 89 | .name = "PSR2 A2", |
| 90 | .probe = psr2_probe, |
| 91 | .setup_arch = psr2_setup_arch, |
| 92 | .restart = psr2_restart, |
| 93 | .power_off = psr2_spin, |
| 94 | .halt = psr2_spin, |
| 95 | .calibrate_decr = generic_calibrate_decr, |
| 96 | .init_IRQ = psr2_init_irq, |
| 97 | .progress = udbg_progress, |
| 98 | .power_save = book3e_idle, |
| 99 | }; |