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, 05 by Ralf Baechle (ralf@linux-mips.org)
9  * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
10  *
11  */
12 #include <linux/init.h>
13 #include <linux/interrupt.h>
14 #include <linux/io.h>
15 #include <linux/ioport.h>
16 #include <linux/memblock.h>
17 #include <linux/pm.h>
18 
19 #include <asm/bootinfo.h>
20 #include <asm/reboot.h>
21 #include <asm/setup.h>
22 #include <asm/gt64120.h>
23 
24 #include <cobalt.h>
25 
26 extern void cobalt_machine_restart(char *command);
27 extern void cobalt_machine_halt(void);
28 
get_system_type(void)29 const char *get_system_type(void)
30 {
31 	switch (cobalt_board_id) {
32 		case COBALT_BRD_ID_QUBE1:
33 			return "Cobalt Qube";
34 		case COBALT_BRD_ID_RAQ1:
35 			return "Cobalt RaQ";
36 		case COBALT_BRD_ID_QUBE2:
37 			return "Cobalt Qube2";
38 		case COBALT_BRD_ID_RAQ2:
39 			return "Cobalt RaQ2";
40 	}
41 	return "MIPS Cobalt";
42 }
43 
44 /*
45  * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
46  * keyboard controller is never used.
47  * Also PCI-ISA bridge DMA controller is never used.
48  */
49 static struct resource cobalt_reserved_resources[] = {
50 	{	/* dma1 */
51 		.start	= 0x00,
52 		.end	= 0x1f,
53 		.name	= "reserved",
54 		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
55 	},
56 	{	/* keyboard */
57 		.start	= 0x60,
58 		.end	= 0x6f,
59 		.name	= "reserved",
60 		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
61 	},
62 	{	/* dma page reg */
63 		.start	= 0x80,
64 		.end	= 0x8f,
65 		.name	= "reserved",
66 		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
67 	},
68 	{	/* dma2 */
69 		.start	= 0xc0,
70 		.end	= 0xdf,
71 		.name	= "reserved",
72 		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
73 	},
74 };
75 
plat_mem_setup(void)76 void __init plat_mem_setup(void)
77 {
78 	int i;
79 
80 	_machine_restart = cobalt_machine_restart;
81 	_machine_halt = cobalt_machine_halt;
82 	pm_power_off = cobalt_machine_halt;
83 
84 	set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
85 
86 	/* I/O port resource */
87 	ioport_resource.end = 0x01ffffff;
88 
89 	/* These resources have been reserved by VIA SuperI/O chip. */
90 	for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
91 		request_resource(&ioport_resource, cobalt_reserved_resources + i);
92 }
93 
94 /*
95  * Prom init. We read our one and only communication with the firmware.
96  * Grab the amount of installed memory.
97  * Better boot loaders (CoLo) pass a command line too :-)
98  */
99 
prom_init(void)100 void __init prom_init(void)
101 {
102 	unsigned long memsz;
103 	int argc, i;
104 	char **argv;
105 
106 	memsz = fw_arg0 & 0x7fff0000;
107 	argc = fw_arg0 & 0x0000ffff;
108 	argv = (char **)fw_arg1;
109 
110 	for (i = 1; i < argc; i++) {
111 		strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
112 		if (i < (argc - 1))
113 			strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
114 	}
115 
116 	memblock_add(0, memsz);
117 
118 	setup_8250_early_printk_port(CKSEG1ADDR(0x1c800000), 0, 0);
119 }
120