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); | |
28 | extern void cobalt_machine_power_off(void); | |
29 | ||
1da177e4 LT |
30 | const char *get_system_type(void) |
31 | { | |
c4ed38a0 RB |
32 | switch (cobalt_board_id) { |
33 | case COBALT_BRD_ID_QUBE1: | |
34 | return "Cobalt Qube"; | |
35 | case COBALT_BRD_ID_RAQ1: | |
36 | return "Cobalt RaQ"; | |
37 | case COBALT_BRD_ID_QUBE2: | |
38 | return "Cobalt Qube2"; | |
39 | case COBALT_BRD_ID_RAQ2: | |
40 | return "Cobalt RaQ2"; | |
41 | } | |
1da177e4 LT |
42 | return "MIPS Cobalt"; |
43 | } | |
44 | ||
54d0a216 | 45 | void __init plat_timer_setup(struct irqaction *irq) |
1da177e4 | 46 | { |
5c90d528 | 47 | /* Load timer value for HZ (TCLK is 50MHz) */ |
56ae5833 | 48 | GT_WRITE(GT_TC0_OFS, 50*1000*1000 / HZ); |
1da177e4 | 49 | |
d5ab1a69 | 50 | /* Enable timer0 */ |
56ae5833 | 51 | GT_WRITE(GT_TC_CONTROL_OFS, GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK); |
1da177e4 | 52 | |
d5ab1a69 | 53 | setup_irq(GT641XX_TIMER0_IRQ, irq); |
1da177e4 LT |
54 | } |
55 | ||
47d7c44b YY |
56 | /* |
57 | * Cobalt doesn't have PS/2 keyboard/mouse interfaces, | |
58 | * keyboard conntroller is never used. | |
59 | * Also PCI-ISA bridge DMA contoroller is never used. | |
60 | */ | |
61 | static struct resource cobalt_reserved_resources[] = { | |
62 | { /* dma1 */ | |
5e46c3ae RB |
63 | .start = 0x00, |
64 | .end = 0x1f, | |
47d7c44b YY |
65 | .name = "reserved", |
66 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, | |
67 | }, | |
68 | { /* keyboard */ | |
5e46c3ae RB |
69 | .start = 0x60, |
70 | .end = 0x6f, | |
47d7c44b YY |
71 | .name = "reserved", |
72 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, | |
73 | }, | |
74 | { /* dma page reg */ | |
5e46c3ae RB |
75 | .start = 0x80, |
76 | .end = 0x8f, | |
47d7c44b YY |
77 | .name = "reserved", |
78 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, | |
79 | }, | |
80 | { /* dma2 */ | |
5e46c3ae RB |
81 | .start = 0xc0, |
82 | .end = 0xdf, | |
47d7c44b YY |
83 | .name = "reserved", |
84 | .flags = IORESOURCE_BUSY | IORESOURCE_IO, | |
5e46c3ae | 85 | }, |
1da177e4 LT |
86 | }; |
87 | ||
d865bea4 RB |
88 | void __init plat_time_init(void) |
89 | { | |
90 | setup_pit_timer(); | |
91 | } | |
92 | ||
2925aba4 | 93 | void __init plat_mem_setup(void) |
1da177e4 | 94 | { |
1da177e4 LT |
95 | int i; |
96 | ||
97 | _machine_restart = cobalt_machine_restart; | |
98 | _machine_halt = cobalt_machine_halt; | |
fcdb27ad | 99 | pm_power_off = cobalt_machine_power_off; |
1da177e4 | 100 | |
56ae5833 | 101 | set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE)); |
c4ed38a0 | 102 | |
0cfd5267 | 103 | /* I/O port resource must include LCD/buttons */ |
c4ed38a0 | 104 | ioport_resource.end = 0x0fffffff; |
1da177e4 | 105 | |
47d7c44b YY |
106 | /* These resources have been reserved by VIA SuperI/O chip. */ |
107 | for (i = 0; i < ARRAY_SIZE(cobalt_reserved_resources); i++) | |
108 | request_resource(&ioport_resource, cobalt_reserved_resources + i); | |
1da177e4 LT |
109 | } |
110 | ||
1da177e4 LT |
111 | /* |
112 | * Prom init. We read our one and only communication with the firmware. | |
c4ed38a0 RB |
113 | * Grab the amount of installed memory. |
114 | * Better boot loaders (CoLo) pass a command line too :-) | |
1da177e4 LT |
115 | */ |
116 | ||
117 | void __init prom_init(void) | |
118 | { | |
c4ed38a0 RB |
119 | int narg, indx, posn, nchr; |
120 | unsigned long memsz; | |
121 | char **argv; | |
1da177e4 | 122 | |
c4ed38a0 RB |
123 | memsz = fw_arg0 & 0x7fff0000; |
124 | narg = fw_arg0 & 0x0000ffff; | |
125 | ||
126 | if (narg) { | |
127 | arcs_cmdline[0] = '\0'; | |
128 | argv = (char **) fw_arg1; | |
129 | posn = 0; | |
130 | for (indx = 1; indx < narg; ++indx) { | |
131 | nchr = strlen(argv[indx]); | |
132 | if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline)) | |
133 | break; | |
134 | if (posn) | |
135 | arcs_cmdline[posn++] = ' '; | |
136 | strcpy(arcs_cmdline + posn, argv[indx]); | |
137 | posn += nchr; | |
138 | } | |
139 | } | |
140 | ||
141 | add_memory_region(0x0, memsz, BOOT_MEM_RAM); | |
1da177e4 LT |
142 | } |
143 | ||
c44e8d5e | 144 | void __init prom_free_prom_memory(void) |
1da177e4 LT |
145 | { |
146 | /* Nothing to do! */ | |
1da177e4 | 147 | } |