2 * Setup pointers to hardware dependent routines.
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
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)
12 #include <linux/interrupt.h>
13 #include <linux/init.h>
16 #include <asm/bootinfo.h>
18 #include <asm/i8253.h>
20 #include <asm/reboot.h>
21 #include <asm/gt64120.h>
26 extern void cobalt_machine_restart(char *command);
27 extern void cobalt_machine_halt(void);
28 extern void cobalt_machine_power_off(void);
30 const char *get_system_type(void)
32 switch (cobalt_board_id) {
33 case COBALT_BRD_ID_QUBE1:
35 case COBALT_BRD_ID_RAQ1:
37 case COBALT_BRD_ID_QUBE2:
38 return "Cobalt Qube2";
39 case COBALT_BRD_ID_RAQ2:
45 void __init plat_timer_setup(struct irqaction *irq)
47 /* Load timer value for HZ (TCLK is 50MHz) */
48 GT_WRITE(GT_TC0_OFS, 50*1000*1000 / HZ);
51 GT_WRITE(GT_TC_CONTROL_OFS, GT_TC_CONTROL_ENTC0_MSK | GT_TC_CONTROL_SELTC0_MSK);
53 setup_irq(GT641XX_TIMER0_IRQ, irq);
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.
61 static struct resource cobalt_reserved_resources[] = {
66 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
72 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
78 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
84 .flags = IORESOURCE_BUSY | IORESOURCE_IO,
88 void __init plat_time_init(void)
93 void __init plat_mem_setup(void)
97 _machine_restart = cobalt_machine_restart;
98 _machine_halt = cobalt_machine_halt;
99 pm_power_off = cobalt_machine_power_off;
101 set_io_port_base(CKSEG1ADDR(GT_DEF_PCI0_IO_BASE));
103 /* I/O port resource must include LCD/buttons */
104 ioport_resource.end = 0x0fffffff;
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);
112 * Prom init. We read our one and only communication with the firmware.
113 * Grab the amount of installed memory.
114 * Better boot loaders (CoLo) pass a command line too :-)
117 void __init prom_init(void)
119 int narg, indx, posn, nchr;
123 memsz = fw_arg0 & 0x7fff0000;
124 narg = fw_arg0 & 0x0000ffff;
127 arcs_cmdline[0] = '\0';
128 argv = (char **) fw_arg1;
130 for (indx = 1; indx < narg; ++indx) {
131 nchr = strlen(argv[indx]);
132 if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
135 arcs_cmdline[posn++] = ' ';
136 strcpy(arcs_cmdline + posn, argv[indx]);
141 add_memory_region(0x0, memsz, BOOT_MEM_RAM);
144 void __init prom_free_prom_memory(void)