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