xref: /openbmc/linux/arch/mips/cobalt/setup.c (revision 3ca9760fdfa411f7e5db54b3437fbb858d2ec825)
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/setup.h>
21  #include <asm/gt64120.h>
22  
23  #include <cobalt.h>
24  
25  extern void cobalt_machine_restart(char *command);
26  extern void cobalt_machine_halt(void);
27  
28  const char *get_system_type(void)
29  {
30  	switch (cobalt_board_id) {
31  		case COBALT_BRD_ID_QUBE1:
32  			return "Cobalt Qube";
33  		case COBALT_BRD_ID_RAQ1:
34  			return "Cobalt RaQ";
35  		case COBALT_BRD_ID_QUBE2:
36  			return "Cobalt Qube2";
37  		case COBALT_BRD_ID_RAQ2:
38  			return "Cobalt RaQ2";
39  	}
40  	return "MIPS Cobalt";
41  }
42  
43  /*
44   * Cobalt doesn't have PS/2 keyboard/mouse interfaces,
45   * keyboard controller is never used.
46   * Also PCI-ISA bridge DMA controller is never used.
47   */
48  static struct resource cobalt_reserved_resources[] = {
49  	{	/* dma1 */
50  		.start	= 0x00,
51  		.end	= 0x1f,
52  		.name	= "reserved",
53  		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
54  	},
55  	{	/* keyboard */
56  		.start	= 0x60,
57  		.end	= 0x6f,
58  		.name	= "reserved",
59  		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
60  	},
61  	{	/* dma page reg */
62  		.start	= 0x80,
63  		.end	= 0x8f,
64  		.name	= "reserved",
65  		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
66  	},
67  	{	/* dma2 */
68  		.start	= 0xc0,
69  		.end	= 0xdf,
70  		.name	= "reserved",
71  		.flags	= IORESOURCE_BUSY | IORESOURCE_IO,
72  	},
73  };
74  
75  void __init plat_mem_setup(void)
76  {
77  	int i;
78  
79  	_machine_restart = cobalt_machine_restart;
80  	_machine_halt = cobalt_machine_halt;
81  	pm_power_off = cobalt_machine_halt;
82  
83  	set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
84  
85  	/* I/O port resource */
86  	ioport_resource.end = 0x01ffffff;
87  
88  	/* These resources have been reserved by VIA SuperI/O chip. */
89  	for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++)
90  		request_resource(&ioport_resource, cobalt_reserved_resources + i);
91  }
92  
93  /*
94   * Prom init. We read our one and only communication with the firmware.
95   * Grab the amount of installed memory.
96   * Better boot loaders (CoLo) pass a command line too :-)
97   */
98  
99  void __init prom_init(void)
100  {
101  	unsigned long memsz;
102  	int argc, i;
103  	char **argv;
104  
105  	memsz = fw_arg0 & 0x7fff0000;
106  	argc = fw_arg0 & 0x0000ffff;
107  	argv = (char **)fw_arg1;
108  
109  	for (i = 1; i < argc; i++) {
110  		strlcat(arcs_cmdline, argv[i], COMMAND_LINE_SIZE);
111  		if (i < (argc - 1))
112  			strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE);
113  	}
114  
115  	add_memory_region(0x0, memsz, BOOT_MEM_RAM);
116  
117  	setup_8250_early_printk_port(CKSEG1ADDR(0x1c800000), 0, 0);
118  }
119  
120  void __init prom_free_prom_memory(void)
121  {
122  	/* Nothing to do! */
123  }
124