Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 1 | /* |
| 2 | * arch/powerpc/platforms/83xx/mpc834x_sys.c |
| 3 | * |
| 4 | * MPC834x SYS board specific routines |
| 5 | * |
| 6 | * Maintainer: Kumar Gala <galak@kernel.crashing.org> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/config.h> |
| 15 | #include <linux/stddef.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/reboot.h> |
| 20 | #include <linux/pci.h> |
| 21 | #include <linux/kdev_t.h> |
| 22 | #include <linux/major.h> |
| 23 | #include <linux/console.h> |
| 24 | #include <linux/delay.h> |
| 25 | #include <linux/seq_file.h> |
| 26 | #include <linux/root_dev.h> |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 27 | |
| 28 | #include <asm/system.h> |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 29 | #include <asm/atomic.h> |
| 30 | #include <asm/time.h> |
| 31 | #include <asm/io.h> |
| 32 | #include <asm/machdep.h> |
| 33 | #include <asm/ipic.h> |
| 34 | #include <asm/bootinfo.h> |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 35 | #include <asm/irq.h> |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 36 | #include <asm/prom.h> |
| 37 | #include <asm/udbg.h> |
| 38 | #include <sysdev/fsl_soc.h> |
| 39 | |
| 40 | #include "mpc83xx.h" |
| 41 | |
| 42 | #ifndef CONFIG_PCI |
| 43 | unsigned long isa_io_base = 0; |
| 44 | unsigned long isa_mem_base = 0; |
| 45 | #endif |
| 46 | |
| 47 | #ifdef CONFIG_PCI |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 48 | static int |
| 49 | mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) |
| 50 | { |
| 51 | static char pci_irq_table[][4] = |
| 52 | /* |
| 53 | * PCI IDSEL/INTPIN->INTLINE |
| 54 | * A B C D |
| 55 | */ |
| 56 | { |
| 57 | {PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x11 */ |
| 58 | {PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x12 */ |
| 59 | {PIRQD, PIRQA, PIRQB, PIRQC}, /* idsel 0x13 */ |
| 60 | {0, 0, 0, 0}, |
| 61 | {PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x15 */ |
| 62 | {PIRQD, PIRQA, PIRQB, PIRQC}, /* idsel 0x16 */ |
| 63 | {PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x17 */ |
| 64 | {PIRQB, PIRQC, PIRQD, PIRQA}, /* idsel 0x18 */ |
| 65 | {0, 0, 0, 0}, /* idsel 0x19 */ |
| 66 | {0, 0, 0, 0}, /* idsel 0x20 */ |
| 67 | }; |
| 68 | |
| 69 | const long min_idsel = 0x11, max_idsel = 0x20, irqs_per_slot = 4; |
| 70 | return PCI_IRQ_TABLE_LOOKUP; |
| 71 | } |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 72 | #endif /* CONFIG_PCI */ |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 73 | |
| 74 | /* ************************************************************************ |
| 75 | * |
| 76 | * Setup the architecture |
| 77 | * |
| 78 | */ |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 79 | static void __init mpc834x_sys_setup_arch(void) |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 80 | { |
| 81 | struct device_node *np; |
| 82 | |
| 83 | if (ppc_md.progress) |
| 84 | ppc_md.progress("mpc834x_sys_setup_arch()", 0); |
| 85 | |
| 86 | np = of_find_node_by_type(NULL, "cpu"); |
| 87 | if (np != 0) { |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 88 | unsigned int *fp = |
| 89 | (int *)get_property(np, "clock-frequency", NULL); |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 90 | if (fp != 0) |
| 91 | loops_per_jiffy = *fp / HZ; |
| 92 | else |
| 93 | loops_per_jiffy = 50000000 / HZ; |
| 94 | of_node_put(np); |
| 95 | } |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 96 | #ifdef CONFIG_PCI |
| 97 | for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) |
| 98 | add_bridge(np); |
| 99 | |
| 100 | ppc_md.pci_swizzle = common_swizzle; |
| 101 | ppc_md.pci_map_irq = mpc83xx_map_irq; |
| 102 | ppc_md.pci_exclude_device = mpc83xx_exclude_device; |
| 103 | #endif |
| 104 | |
| 105 | #ifdef CONFIG_ROOT_NFS |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 106 | ROOT_DEV = Root_NFS; |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 107 | #else |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 108 | ROOT_DEV = Root_HDA1; |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 109 | #endif |
| 110 | } |
| 111 | |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 112 | void __init mpc834x_sys_init_IRQ(void) |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 113 | { |
| 114 | u8 senses[8] = { |
| 115 | 0, /* EXT 0 */ |
| 116 | IRQ_SENSE_LEVEL, /* EXT 1 */ |
| 117 | IRQ_SENSE_LEVEL, /* EXT 2 */ |
| 118 | 0, /* EXT 3 */ |
| 119 | #ifdef CONFIG_PCI |
| 120 | IRQ_SENSE_LEVEL, /* EXT 4 */ |
| 121 | IRQ_SENSE_LEVEL, /* EXT 5 */ |
| 122 | IRQ_SENSE_LEVEL, /* EXT 6 */ |
| 123 | IRQ_SENSE_LEVEL, /* EXT 7 */ |
| 124 | #else |
| 125 | 0, /* EXT 4 */ |
| 126 | 0, /* EXT 5 */ |
| 127 | 0, /* EXT 6 */ |
| 128 | 0, /* EXT 7 */ |
| 129 | #endif |
| 130 | }; |
| 131 | |
| 132 | ipic_init(get_immrbase() + 0x00700, 0, 0, senses, 8); |
| 133 | |
| 134 | /* Initialize the default interrupt mapping priorities, |
| 135 | * in case the boot rom changed something on us. |
| 136 | */ |
| 137 | ipic_set_default_priority(); |
| 138 | } |
| 139 | |
| 140 | #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374) |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 141 | extern ulong ds1374_get_rtc_time(void); |
| 142 | extern int ds1374_set_rtc_time(ulong); |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 143 | |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 144 | static int __init mpc834x_rtc_hookup(void) |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 145 | { |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 146 | struct timespec tv; |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 147 | |
| 148 | ppc_md.get_rtc_time = ds1374_get_rtc_time; |
| 149 | ppc_md.set_rtc_time = ds1374_set_rtc_time; |
| 150 | |
| 151 | tv.tv_nsec = 0; |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 152 | tv.tv_sec = (ppc_md.get_rtc_time) (); |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 153 | do_settimeofday(&tv); |
| 154 | |
| 155 | return 0; |
| 156 | } |
Kumar Gala | e060e08 | 2006-02-02 13:51:10 -0600 | [diff] [blame] | 157 | |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 158 | late_initcall(mpc834x_rtc_hookup); |
| 159 | #endif |
| 160 | |
Kumar Gala | 72d2c3e | 2006-03-30 23:39:57 -0600 | [diff] [blame] | 161 | /* |
| 162 | * Called very early, MMU is off, device-tree isn't unflattened |
| 163 | */ |
| 164 | static int __init mpc834x_sys_probe(void) |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 165 | { |
Kumar Gala | 72d2c3e | 2006-03-30 23:39:57 -0600 | [diff] [blame] | 166 | /* We always match for now, eventually we should look at the flat |
| 167 | dev tree to ensure this is the board we are suppose to run on |
| 168 | */ |
| 169 | return 1; |
Kumar Gala | 7d13d21 | 2006-01-13 11:19:58 -0600 | [diff] [blame] | 170 | } |
Kumar Gala | 72d2c3e | 2006-03-30 23:39:57 -0600 | [diff] [blame] | 171 | |
| 172 | define_machine(mpc834x_sys) { |
| 173 | .name = "MPC834x SYS", |
| 174 | .probe = mpc834x_sys_probe, |
| 175 | .setup_arch = mpc834x_sys_setup_arch, |
| 176 | .init_IRQ = mpc834x_sys_init_IRQ, |
| 177 | .get_irq = ipic_get_irq, |
| 178 | .restart = mpc83xx_restart, |
| 179 | .time_init = mpc83xx_time_init, |
| 180 | .calibrate_decr = generic_calibrate_decr, |
| 181 | .progress = udbg_progress, |
| 182 | }; |