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 by Ralf Baechle (ralf@linux-mips.org)
9 * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
12 #include <linux/config.h>
13 #include <linux/interrupt.h>
14 #include <linux/pci.h>
15 #include <linux/init.h>
16 #include <linux/serial.h>
17 #include <linux/serial_core.h>
19 #include <asm/bootinfo.h>
23 #include <asm/processor.h>
24 #include <asm/reboot.h>
25 #include <asm/gt64120.h>
26 #include <asm/serial.h>
28 #include <asm/cobalt/cobalt.h>
30 extern void cobalt_machine_restart(char *command);
31 extern void cobalt_machine_halt(void);
32 extern void cobalt_machine_power_off(void);
36 const char *get_system_type(void)
38 switch (cobalt_board_id) {
39 case COBALT_BRD_ID_QUBE1:
41 case COBALT_BRD_ID_RAQ1:
43 case COBALT_BRD_ID_QUBE2:
44 return "Cobalt Qube2";
45 case COBALT_BRD_ID_RAQ2:
51 static void __init cobalt_timer_setup(struct irqaction *irq)
53 /* Load timer value for 1KHz (TCLK is 50MHz) */
54 GALILEO_OUTL(50*1000*1000 / 1000, GT_TC0_OFS);
57 GALILEO_OUTL(GALILEO_ENTC0 | GALILEO_SELTC0, GT_TC_CONTROL_OFS);
59 /* Register interrupt */
60 setup_irq(COBALT_GALILEO_IRQ, irq);
62 /* Enable interrupt */
63 GALILEO_OUTL(GALILEO_INTR_T0EXP | GALILEO_INL(GT_INTRMASK_OFS), GT_INTRMASK_OFS);
66 extern struct pci_ops gt64111_pci_ops;
68 static struct resource cobalt_mem_resource = {
69 "PCI memory", GT64111_MEM_BASE, GT64111_MEM_END, IORESOURCE_MEM
72 static struct resource cobalt_io_resource = {
73 "PCI I/O", 0x1000, 0xffff, IORESOURCE_IO
76 static struct resource cobalt_io_resources[] = {
77 { "dma1", 0x00, 0x1f, IORESOURCE_BUSY },
78 { "timer", 0x40, 0x5f, IORESOURCE_BUSY },
79 { "keyboard", 0x60, 0x6f, IORESOURCE_BUSY },
80 { "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY },
81 { "dma2", 0xc0, 0xdf, IORESOURCE_BUSY },
84 #define COBALT_IO_RESOURCES (sizeof(cobalt_io_resources)/sizeof(struct resource))
86 static struct pci_controller cobalt_pci_controller = {
87 .pci_ops = >64111_pci_ops,
88 .mem_resource = &cobalt_mem_resource,
90 .io_resource = &cobalt_io_resource,
91 .io_offset = 0 - GT64111_IO_BASE
94 void __init plat_setup(void)
96 static struct uart_port uart;
97 unsigned int devfn = PCI_DEVFN(COBALT_PCICONF_VIA, 0);
100 _machine_restart = cobalt_machine_restart;
101 _machine_halt = cobalt_machine_halt;
102 _machine_power_off = cobalt_machine_power_off;
104 board_timer_setup = cobalt_timer_setup;
106 set_io_port_base(CKSEG1ADDR(GT64111_IO_BASE));
108 /* I/O port resource must include UART and LCD/buttons */
109 ioport_resource.end = 0x0fffffff;
112 * This is a prom style console. We just poke at the
113 * UART to make it talk.
114 * Only use this console if you really screw up and can't
115 * get to the stage of setting up a real serial console.
117 /*ns16550_setup_console();*/
119 /* request I/O space for devices used on all i[345]86 PCs */
120 for (i = 0; i < COBALT_IO_RESOURCES; i++)
121 request_resource(&ioport_resource, cobalt_io_resources + i);
123 /* Read the cobalt id register out of the PCI config space */
124 PCI_CFG_SET(devfn, (VIA_COBALT_BRD_ID_REG & ~0x3));
125 cobalt_board_id = GALILEO_INL(GT_PCI0_CFGDATA_OFS);
126 cobalt_board_id >>= ((VIA_COBALT_BRD_ID_REG & 3) * 8);
127 cobalt_board_id = VIA_COBALT_BRD_REG_to_ID(cobalt_board_id);
129 printk("Cobalt board ID: %d\n", cobalt_board_id);
132 register_pci_controller(&cobalt_pci_controller);
135 #ifdef CONFIG_SERIAL_8250
136 if (cobalt_board_id > COBALT_BRD_ID_RAQ1) {
139 uart.type = PORT_UNKNOWN;
140 uart.uartclk = 18432000;
141 uart.irq = COBALT_SERIAL_IRQ;
142 uart.flags = STD_COM_FLAGS;
143 uart.iobase = 0xc800000;
144 uart.iotype = UPIO_PORT;
146 early_serial_setup(&uart);
152 * Prom init. We read our one and only communication with the firmware.
153 * Grab the amount of installed memory.
154 * Better boot loaders (CoLo) pass a command line too :-)
157 void __init prom_init(void)
159 int narg, indx, posn, nchr;
163 mips_machgroup = MACH_GROUP_COBALT;
165 memsz = fw_arg0 & 0x7fff0000;
166 narg = fw_arg0 & 0x0000ffff;
169 arcs_cmdline[0] = '\0';
170 argv = (char **) fw_arg1;
172 for (indx = 1; indx < narg; ++indx) {
173 nchr = strlen(argv[indx]);
174 if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
177 arcs_cmdline[posn++] = ' ';
178 strcpy(arcs_cmdline + posn, argv[indx]);
183 add_memory_region(0x0, memsz, BOOT_MEM_RAM);
186 unsigned long __init prom_free_prom_memory(void)