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 | * | |
fcdb27ad | 8 | * Copyright (C) 1996, 1997, 2004, 05 by Ralf Baechle (ralf@linux-mips.org) |
1da177e4 LT |
9 | * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv) |
10 | * | |
11 | */ | |
1da177e4 | 12 | #include <linux/interrupt.h> |
1da177e4 | 13 | #include <linux/init.h> |
fcdb27ad | 14 | #include <linux/pm.h> |
1da177e4 LT |
15 | |
16 | #include <asm/bootinfo.h> | |
17 | #include <asm/time.h> | |
d865bea4 | 18 | #include <asm/i8253.h> |
1da177e4 | 19 | #include <asm/io.h> |
1da177e4 LT |
20 | #include <asm/reboot.h> |
21 | #include <asm/gt64120.h> | |
22 | ||
cc50b67d | 23 | #include <cobalt.h> |
d5ab1a69 | 24 | #include <irq.h> |
1da177e4 LT |
25 | |
26 | extern void cobalt_machine_restart(char *command); | |
27 | extern void cobalt_machine_halt(void); | |
1da177e4 | 28 | |
1da177e4 LT |
29 | const char *get_system_type(void) |
30 | { | |
c4ed38a0 RB |
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 | } | |
1da177e4 LT |
41 | return "MIPS Cobalt"; |
42 | } | |
43 | ||
54d0a216 | 44 | void __init plat_timer_setup(struct irqaction *irq) |
1da177e4 | 45 | { |
5c90d528 | 46 | /* Load timer value for HZ (TCLK is 50MHz) */ |
56ae5833 | 47 | GT_WRITE(GT_TC0_OFS, 50*1000*1000 / HZ); |
1da177e4 | 48 | |
d5ab1a69 | 49 | /* Enable timer0 */ |
56ae5833 | 50 | GT_WRITE(GT_TC_CONTROL_OFS, GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK); |
1da177e4 | 51 | |
d5ab1a69 | 52 | setup_irq(GT641XX_TIMER0_IRQ, irq); |
1da177e4 LT |
53 | } |
54 | ||
47d7c44b YY |
55 | /* |
56 | * Cobalt doesn't have PS/2 keyboard/mouse interfaces, | |
57 | * keyboard conntroller is never used. | |
58 | * Also PCI-ISA bridge DMA contoroller is never used. | |
59 | */ | |
60 | static struct resource cobalt_reserved_resources[] = { | |
61 | { /* dma1 */ | |
5e46c3ae RB |
62 | .start = 0x00, |
63 | .end = 0x1f, | |
47d7c44b YY |
64 | .name = "reserved", |
65 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, | |
66 | }, | |
67 | { /* keyboard */ | |
5e46c3ae RB |
68 | .start = 0x60, |
69 | .end = 0x6f, | |
47d7c44b YY |
70 | .name = "reserved", |
71 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, | |
72 | }, | |
73 | { /* dma page reg */ | |
5e46c3ae RB |
74 | .start = 0x80, |
75 | .end = 0x8f, | |
47d7c44b YY |
76 | .name = "reserved", |
77 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, | |
78 | }, | |
79 | { /* dma2 */ | |
5e46c3ae RB |
80 | .start = 0xc0, |
81 | .end = 0xdf, | |
47d7c44b YY |
82 | .name = "reserved", |
83 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, | |
5e46c3ae | 84 | }, |
1da177e4 LT |
85 | }; |
86 | ||
d865bea4 RB |
87 | void __init plat_time_init(void) |
88 | { | |
89 | setup_pit_timer(); | |
90 | } | |
91 | ||
2925aba4 | 92 | void __init plat_mem_setup(void) |
1da177e4 | 93 | { |
1da177e4 LT |
94 | int i; |
95 | ||
96 | _machine_restart = cobalt_machine_restart; | |
97 | _machine_halt = cobalt_machine_halt; | |
f13558c2 | 98 | pm_power_off = cobalt_machine_halt; |
1da177e4 | 99 | |
56ae5833 | 100 | set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE)); |
c4ed38a0 | 101 | |
0cfd5267 | 102 | /* I/O port resource must include LCD/buttons */ |
c4ed38a0 | 103 | ioport_resource.end = 0x0fffffff; |
1da177e4 | 104 | |
47d7c44b YY |
105 | /* These resources have been reserved by VIA SuperI/O chip. */ |
106 | for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++) | |
107 | request_resource(&ioport_resource, cobalt_reserved_resources + i); | |
1da177e4 LT |
108 | } |
109 | ||
1da177e4 LT |
110 | /* |
111 | * Prom init. We read our one and only communication with the firmware. | |
c4ed38a0 RB |
112 | * Grab the amount of installed memory. |
113 | * Better boot loaders (CoLo) pass a command line too :-) | |
1da177e4 LT |
114 | */ |
115 | ||
116 | void __init prom_init(void) | |
117 | { | |
c4ed38a0 RB |
118 | int narg, indx, posn, nchr; |
119 | unsigned long memsz; | |
120 | char **argv; | |
1da177e4 | 121 | |
c4ed38a0 RB |
122 | memsz = fw_arg0 & 0x7fff0000; |
123 | narg = fw_arg0 & 0x0000ffff; | |
124 | ||
125 | if (narg) { | |
126 | arcs_cmdline[0] = '\0'; | |
127 | argv = (char **) fw_arg1; | |
128 | posn = 0; | |
129 | for (indx = 1; indx < narg; ++indx) { | |
130 | nchr = strlen(argv[indx]); | |
131 | if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline)) | |
132 | break; | |
133 | if (posn) | |
134 | arcs_cmdline[posn++] = ' '; | |
135 | strcpy(arcs_cmdline + posn, argv[indx]); | |
136 | posn += nchr; | |
137 | } | |
138 | } | |
139 | ||
140 | add_memory_region(0x0, memsz, BOOT_MEM_RAM); | |
1da177e4 LT |
141 | } |
142 | ||
c44e8d5e | 143 | void __init prom_free_prom_memory(void) |
1da177e4 LT |
144 | { |
145 | /* Nothing to do! */ | |
1da177e4 | 146 | } |