mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 21:46:40 +07:00
c4ed38a0c6
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
191 lines
4.8 KiB
C
191 lines
4.8 KiB
C
/*
|
|
* Setup pointers to hardware dependent routines.
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 1996, 1997, 2004 by Ralf Baechle (ralf@linux-mips.org)
|
|
* Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv)
|
|
*
|
|
*/
|
|
#include <linux/config.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/serial_core.h>
|
|
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/time.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/reboot.h>
|
|
#include <asm/gt64120.h>
|
|
#include <asm/serial.h>
|
|
|
|
#include <asm/cobalt/cobalt.h>
|
|
|
|
extern void cobalt_machine_restart(char *command);
|
|
extern void cobalt_machine_halt(void);
|
|
extern void cobalt_machine_power_off(void);
|
|
|
|
int cobalt_board_id;
|
|
|
|
const char *get_system_type(void)
|
|
{
|
|
switch (cobalt_board_id) {
|
|
case COBALT_BRD_ID_QUBE1:
|
|
return "Cobalt Qube";
|
|
case COBALT_BRD_ID_RAQ1:
|
|
return "Cobalt RaQ";
|
|
case COBALT_BRD_ID_QUBE2:
|
|
return "Cobalt Qube2";
|
|
case COBALT_BRD_ID_RAQ2:
|
|
return "Cobalt RaQ2";
|
|
}
|
|
return "MIPS Cobalt";
|
|
}
|
|
|
|
static void __init cobalt_timer_setup(struct irqaction *irq)
|
|
{
|
|
/* Load timer value for 1KHz (TCLK is 50MHz) */
|
|
GALILEO_OUTL(50*1000*1000 / 1000, GT_TC0_OFS);
|
|
|
|
/* Enable timer */
|
|
GALILEO_OUTL(GALILEO_ENTC0 | GALILEO_SELTC0, GT_TC_CONTROL_OFS);
|
|
|
|
/* Register interrupt */
|
|
setup_irq(COBALT_GALILEO_IRQ, irq);
|
|
|
|
/* Enable interrupt */
|
|
GALILEO_OUTL(GALILEO_INTR_T0EXP | GALILEO_INL(GT_INTRMASK_OFS), GT_INTRMASK_OFS);
|
|
}
|
|
|
|
extern struct pci_ops gt64111_pci_ops;
|
|
|
|
static struct resource cobalt_mem_resource = {
|
|
"PCI memory", GT64111_MEM_BASE, GT64111_MEM_END, IORESOURCE_MEM
|
|
};
|
|
|
|
static struct resource cobalt_io_resource = {
|
|
"PCI I/O", 0x1000, 0xffff, IORESOURCE_IO
|
|
};
|
|
|
|
static struct resource cobalt_io_resources[] = {
|
|
{ "dma1", 0x00, 0x1f, IORESOURCE_BUSY },
|
|
{ "timer", 0x40, 0x5f, IORESOURCE_BUSY },
|
|
{ "keyboard", 0x60, 0x6f, IORESOURCE_BUSY },
|
|
{ "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY },
|
|
{ "dma2", 0xc0, 0xdf, IORESOURCE_BUSY },
|
|
};
|
|
|
|
#define COBALT_IO_RESOURCES (sizeof(cobalt_io_resources)/sizeof(struct resource))
|
|
|
|
static struct pci_controller cobalt_pci_controller = {
|
|
.pci_ops = >64111_pci_ops,
|
|
.mem_resource = &cobalt_mem_resource,
|
|
.mem_offset = 0,
|
|
.io_resource = &cobalt_io_resource,
|
|
.io_offset = 0 - GT64111_IO_BASE
|
|
};
|
|
|
|
void __init plat_setup(void)
|
|
{
|
|
static struct uart_port uart;
|
|
unsigned int devfn = PCI_DEVFN(COBALT_PCICONF_VIA, 0);
|
|
int i;
|
|
|
|
_machine_restart = cobalt_machine_restart;
|
|
_machine_halt = cobalt_machine_halt;
|
|
_machine_power_off = cobalt_machine_power_off;
|
|
|
|
board_timer_setup = cobalt_timer_setup;
|
|
|
|
set_io_port_base(CKSEG1ADDR(GT64111_IO_BASE));
|
|
|
|
/* I/O port resource must include UART and LCD/buttons */
|
|
ioport_resource.end = 0x0fffffff;
|
|
|
|
/*
|
|
* This is a prom style console. We just poke at the
|
|
* UART to make it talk.
|
|
* Only use this console if you really screw up and can't
|
|
* get to the stage of setting up a real serial console.
|
|
*/
|
|
/*ns16550_setup_console();*/
|
|
|
|
/* request I/O space for devices used on all i[345]86 PCs */
|
|
for (i = 0; i < COBALT_IO_RESOURCES; i++)
|
|
request_resource(&ioport_resource, cobalt_io_resources + i);
|
|
|
|
/* Read the cobalt id register out of the PCI config space */
|
|
PCI_CFG_SET(devfn, (VIA_COBALT_BRD_ID_REG & ~0x3));
|
|
cobalt_board_id = GALILEO_INL(GT_PCI0_CFGDATA_OFS);
|
|
cobalt_board_id >>= ((VIA_COBALT_BRD_ID_REG & 3) * 8);
|
|
cobalt_board_id = VIA_COBALT_BRD_REG_to_ID(cobalt_board_id);
|
|
|
|
printk("Cobalt board ID: %d\n", cobalt_board_id);
|
|
|
|
#ifdef CONFIG_PCI
|
|
register_pci_controller(&cobalt_pci_controller);
|
|
#endif
|
|
|
|
#ifdef CONFIG_SERIAL_8250
|
|
if (cobalt_board_id > COBALT_BRD_ID_RAQ1) {
|
|
|
|
uart.line = 0;
|
|
uart.type = PORT_UNKNOWN;
|
|
uart.uartclk = 18432000;
|
|
uart.irq = COBALT_SERIAL_IRQ;
|
|
uart.flags = STD_COM_FLAGS;
|
|
uart.iobase = 0xc800000;
|
|
uart.iotype = UPIO_PORT;
|
|
|
|
early_serial_setup(&uart);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Prom init. We read our one and only communication with the firmware.
|
|
* Grab the amount of installed memory.
|
|
* Better boot loaders (CoLo) pass a command line too :-)
|
|
*/
|
|
|
|
void __init prom_init(void)
|
|
{
|
|
int narg, indx, posn, nchr;
|
|
unsigned long memsz;
|
|
char **argv;
|
|
|
|
mips_machgroup = MACH_GROUP_COBALT;
|
|
|
|
memsz = fw_arg0 & 0x7fff0000;
|
|
narg = fw_arg0 & 0x0000ffff;
|
|
|
|
if (narg) {
|
|
arcs_cmdline[0] = '\0';
|
|
argv = (char **) fw_arg1;
|
|
posn = 0;
|
|
for (indx = 1; indx < narg; ++indx) {
|
|
nchr = strlen(argv[indx]);
|
|
if (posn + 1 + nchr + 1 > sizeof(arcs_cmdline))
|
|
break;
|
|
if (posn)
|
|
arcs_cmdline[posn++] = ' ';
|
|
strcpy(arcs_cmdline + posn, argv[indx]);
|
|
posn += nchr;
|
|
}
|
|
}
|
|
|
|
add_memory_region(0x0, memsz, BOOT_MEM_RAM);
|
|
}
|
|
|
|
unsigned long __init prom_free_prom_memory(void)
|
|
{
|
|
/* Nothing to do! */
|
|
return 0;
|
|
}
|