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/pm.h>
17
18 #include <asm/bootinfo.h>
19 #include <asm/reboot.h>
20 #include <asm/gt64120.h>
21
22 #include <cobalt.h>
23
24 extern void cobalt_machine_restart(char *command);
25 extern void cobalt_machine_halt(void);
26
get_system_type(void)27 const char *get_system_type(void)
28 {
29 switch (cobalt_board_id) {
30 case COBALT_BRD_ID_QUBE1:
31 return "Cobalt Qube";
32 case COBALT_BRD_ID_RAQ1:
33 return "Cobalt RaQ";
34 case COBALT_BRD_ID_QUBE2:
35 return "Cobalt Qube2";
36 case COBALT_BRD_ID_RAQ2:
37 return "Cobalt RaQ2";
38 }
39 return "MIPS Cobalt";
40 }
41
42 /*
43 * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
44 * keyboard conntroller is never used.
45 * Also PCI-ISA bridge DMA contoroller is never used.
46 */
47 static struct resource cobalt_reserved_resources[] = {
48 { /* dma1 */
49 .start = 0x00,
50 .end = 0x1f,
51 .name = "reserved",
52 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
53 },
54 { /* keyboard */
55 .start = 0x60,
56 .end = 0x6f,
57 .name = "reserved",
58 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
59 },
60 { /* dma page reg */
61 .start = 0x80,
62 .end = 0x8f,
63 .name = "reserved",
64 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
65 },
66 { /* dma2 */
67 .start = 0xc0,
68 .end = 0xdf,
69 .name = "reserved",
70 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
71 },
72 };
73
plat_mem_setup(void)74 void __init plat_mem_setup(void)
75 {
76 int i;
77
78 _machine_restart = cobalt_machine_restart;
79 _machine_halt = cobalt_machine_halt;
80 pm_power_off = cobalt_machine_halt;
81
82 set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
83
84 /* I/O port resource */
85 ioport_resource.end = 0x01ffffff;
86
87 /* These resources have been reserved by VIA SuperI/O chip. */
88 for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
89 request_resource(&ioport_resource, cobalt_reserved_resources + i);
90 }
91
92 /*
93 * Prom init. We read our one and only communication with the firmware.
94 * Grab the amount of installed memory.
95 * Better boot loaders (CoLo) pass a command line too :-)
96 */
97
prom_init(void)98 void __init prom_init(void)
99 {
100 int narg, indx, posn, nchr;
101 unsigned long memsz;
102 char **argv;
103
104 memsz = fw_arg0 & 0x7fff0000;
105 narg = fw_arg0 & 0x0000ffff;
106
107 if (narg) {
108 arcs_cmdline[0] = '\0';
109 argv = (char **) fw_arg1;
110 posn = 0;
111 for (indx = 1; indx < narg; ++indx) {
112 nchr = strlen(argv[indx]);
113 if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
114 break;
115 if (posn)
116 arcs_cmdline[posn++] = ' ';
117 strcpy(arcs_cmdline + posn, argv[indx]);
118 posn += nchr;
119 }
120 }
121
122 add_memory_region(0x0, memsz, BOOT_MEM_RAM);
123 }
124
prom_free_prom_memory(void)125 void __init prom_free_prom_memory(void)
126 {
127 /* Nothing to do! */
128 }
129