Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Setup pointers to hardware dependent routines. | |
3 | * | |
4 | * This file is subject to the terms and conditions of the GNU General Public | |
5 | * License. See the file "COPYING" in the main directory of this archive | |
6 | * for more details. | |
7 | * | |
8 | * Copyright (C) 1996, 1997, 2004 by Ralf Baechle (ralf@linux-mips.org) | |
9 | * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv) | |
10 | * | |
11 | */ | |
12 | #include <linux/config.h> | |
13 | #include <linux/interrupt.h> | |
14 | #include <linux/pci.h> | |
15 | #include <linux/init.h> | |
16 | ||
17 | #include <asm/bootinfo.h> | |
18 | #include <asm/time.h> | |
19 | #include <asm/io.h> | |
20 | #include <asm/irq.h> | |
21 | #include <asm/processor.h> | |
22 | #include <asm/reboot.h> | |
23 | #include <asm/gt64120.h> | |
24 | ||
25 | #include <asm/cobalt/cobalt.h> | |
26 | ||
27 | extern void cobalt_machine_restart(char *command); | |
28 | extern void cobalt_machine_halt(void); | |
29 | extern void cobalt_machine_power_off(void); | |
30 | ||
31 | int cobalt_board_id; | |
32 | ||
33 | static char my_cmdline[CL_SIZE] = { | |
34 | "console=ttyS0,115200 " | |
35 | #ifdef CONFIG_IP_PNP | |
36 | "ip=on " | |
37 | #endif | |
38 | #ifdef CONFIG_ROOT_NFS | |
39 | "root=/dev/nfs " | |
40 | #else | |
41 | "root=/dev/hda1 " | |
42 | #endif | |
43 | }; | |
44 | ||
45 | const char *get_system_type(void) | |
46 | { | |
47 | return "MIPS Cobalt"; | |
48 | } | |
49 | ||
50 | static void __init cobalt_timer_setup(struct irqaction *irq) | |
51 | { | |
52 | /* Load timer value for 150 Hz */ | |
53 | GALILEO_OUTL(500000, GT_TC0_OFS); | |
54 | ||
55 | /* Register our timer interrupt */ | |
56 | setup_irq(COBALT_TIMER_IRQ, irq); | |
57 | ||
58 | /* Enable timer ints */ | |
59 | GALILEO_OUTL((GALILEO_ENTC0 | GALILEO_SELTC0), GT_TC_CONTROL_OFS); | |
60 | /* Unmask timer int */ | |
61 | GALILEO_OUTL(0x100, GT_INTRMASK_OFS); | |
62 | } | |
63 | ||
64 | extern struct pci_ops gt64111_pci_ops; | |
65 | ||
66 | static struct resource cobalt_mem_resource = { | |
67 | "GT64111 PCI MEM", GT64111_IO_BASE, 0xffffffffUL, IORESOURCE_MEM | |
68 | }; | |
69 | ||
70 | static struct resource cobalt_io_resource = { | |
71 | "GT64111 IO MEM", 0x00001000UL, 0x0fffffffUL, IORESOURCE_IO | |
72 | }; | |
73 | ||
74 | static struct resource cobalt_io_resources[] = { | |
75 | { "dma1", 0x00, 0x1f, IORESOURCE_BUSY }, | |
76 | { "timer", 0x40, 0x5f, IORESOURCE_BUSY }, | |
77 | { "keyboard", 0x60, 0x6f, IORESOURCE_BUSY }, | |
78 | { "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY }, | |
79 | { "dma2", 0xc0, 0xdf, IORESOURCE_BUSY }, | |
80 | }; | |
81 | ||
82 | #define COBALT_IO_RESOURCES (sizeof(cobalt_io_resources)/sizeof(struct resource)) | |
83 | ||
84 | static struct pci_controller cobalt_pci_controller = { | |
85 | .pci_ops = >64111_pci_ops, | |
86 | .mem_resource = &cobalt_mem_resource, | |
87 | .mem_offset = 0, | |
88 | .io_resource = &cobalt_io_resource, | |
89 | .io_offset = 0x00001000UL - GT64111_IO_BASE | |
90 | }; | |
91 | ||
92 | static void __init cobalt_setup(void) | |
93 | { | |
94 | unsigned int devfn = PCI_DEVFN(COBALT_PCICONF_VIA, 0); | |
95 | int i; | |
96 | ||
97 | _machine_restart = cobalt_machine_restart; | |
98 | _machine_halt = cobalt_machine_halt; | |
99 | _machine_power_off = cobalt_machine_power_off; | |
100 | ||
101 | board_timer_setup = cobalt_timer_setup; | |
102 | ||
103 | set_io_port_base(KSEG1ADDR(GT64111_IO_BASE)); | |
104 | ||
105 | /* | |
106 | * This is a prom style console. We just poke at the | |
107 | * UART to make it talk. | |
108 | * Only use this console if you really screw up and can't | |
109 | * get to the stage of setting up a real serial console. | |
110 | */ | |
111 | /*ns16550_setup_console();*/ | |
112 | ||
113 | /* request I/O space for devices used on all i[345]86 PCs */ | |
114 | for (i = 0; i < COBALT_IO_RESOURCES; i++) | |
115 | request_resource(&ioport_resource, cobalt_io_resources + i); | |
116 | ||
117 | /* Read the cobalt id register out of the PCI config space */ | |
118 | PCI_CFG_SET(devfn, (VIA_COBALT_BRD_ID_REG & ~0x3)); | |
119 | cobalt_board_id = GALILEO_INL(GT_PCI0_CFGDATA_OFS); | |
120 | cobalt_board_id >>= ((VIA_COBALT_BRD_ID_REG & 3) * 8); | |
121 | cobalt_board_id = VIA_COBALT_BRD_REG_to_ID(cobalt_board_id); | |
122 | ||
123 | #ifdef CONFIG_PCI | |
124 | register_pci_controller(&cobalt_pci_controller); | |
125 | #endif | |
126 | } | |
127 | ||
128 | early_initcall(cobalt_setup); | |
129 | ||
130 | /* | |
131 | * Prom init. We read our one and only communication with the firmware. | |
132 | * Grab the amount of installed memory | |
133 | */ | |
134 | ||
135 | void __init prom_init(void) | |
136 | { | |
137 | int argc = fw_arg0; | |
138 | ||
139 | strcpy(arcs_cmdline, my_cmdline); | |
140 | ||
141 | mips_machgroup = MACH_GROUP_COBALT; | |
142 | ||
143 | add_memory_region(0x0, argc & 0x7fffffff, BOOT_MEM_RAM); | |
144 | } | |
145 | ||
146 | unsigned long __init prom_free_prom_memory(void) | |
147 | { | |
148 | /* Nothing to do! */ | |
149 | return 0; | |
150 | } |