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/*
* setup.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) 2006, Wind River System Inc. Rongkai.zhan <rongkai.zhan@windriver.com>
*/
#include <linux/init.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/pm.h>
#include <asm/io.h>
#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/gt64120.h>
unsigned long gt64120_base = KSEG1ADDR(0x14000000);
#ifdef WRPPMC_EARLY_DEBUG
static volatile unsigned char * wrppmc_led = \
(volatile unsigned char *)KSEG1ADDR(WRPPMC_LED_BASE);
/*
* PPMC LED control register:
* -) bit[0] controls DS1 LED (1 - OFF, 0 - ON)
* -) bit[1] controls DS2 LED (1 - OFF, 0 - ON)
* -) bit[2] controls DS4 LED (1 - OFF, 0 - ON)
*/
void wrppmc_led_on(int mask)
{
unsigned char value = *wrppmc_led;
value &= (0xF8 | mask);
*wrppmc_led = value;
}
/* If mask = 0, turn off all LEDs */
void wrppmc_led_off(int mask)
{
unsigned char value = *wrppmc_led;
value |= (0x7 & mask);
*wrppmc_led = value;
}
/*
* We assume that bootloader has initialized UART16550 correctly
*/
void __init wrppmc_early_putc(char ch)
{
static volatile unsigned char *wrppmc_uart = \
(volatile unsigned char *)KSEG1ADDR(WRPPMC_UART16550_BASE);
unsigned char value;
/* Wait until Transmit-Holding-Register is empty */
while (1) {
value = *(wrppmc_uart + 5);
if (value & 0x20)
break;
}
*wrppmc_uart = ch;
}
void __init wrppmc_early_printk(const char *fmt, ...)
{
static char pbuf[256] = {'\0', };
char *ch = pbuf;
va_list args;
unsigned int i;
memset(pbuf, 0, 256);
va_start(args, fmt);
i = vsprintf(pbuf, fmt, args);
va_end(args);
/* Print the string */
while (*ch != '\0') {
wrppmc_early_putc(*ch);
/* if print '\n', also print '\r' */
if (*ch++ == '\n')
wrppmc_early_putc('\r');
}
}
#endif /* WRPPMC_EARLY_DEBUG */
void __init prom_free_prom_memory(void)
{
}
#ifdef CONFIG_SERIAL_8250
static void wrppmc_setup_serial(void)
{
struct uart_port up;
memset(&up, 0x00, sizeof(struct uart_port));
/*
* A note about mapbase/membase
* -) mapbase is the physical address of the IO port.
* -) membase is an 'ioremapped' cookie.
*/
up.line = 0;
up.type = PORT_16550;
up.iotype = UPIO_MEM;
up.mapbase = WRPPMC_UART16550_BASE;
up.membase = ioremap(up.mapbase, 8);
up.irq = WRPPMC_UART16550_IRQ;
up.uartclk = WRPPMC_UART16550_CLOCK;
up.flags = UPF_SKIP_TEST/* | UPF_BOOT_AUTOCONF */;
up.regshift = 0;
early_serial_setup(&up);
}
#endif
void __init plat_mem_setup(void)
{
extern void wrppmc_time_init(void);
extern void wrppmc_machine_restart(char *command);
extern void wrppmc_machine_halt(void);
extern void wrppmc_machine_power_off(void);
_machine_restart = wrppmc_machine_restart;
_machine_halt = wrppmc_machine_halt;
pm_power_off = wrppmc_machine_power_off;
/* Use MIPS Count/Compare Timer */
board_time_init = wrppmc_time_init;
/* This makes the operations of 'in/out[bwl]' to the
* physical address ( < KSEG0) can work via KSEG1
*/
set_io_port_base(KSEG1);
#ifdef CONFIG_SERIAL_8250
wrppmc_setup_serial();
#endif
}
const char *get_system_type(void)
{
return "Wind River PPMC (GT64120)";
}
/*
* Initializes basic routines and structures pointers, memory size (as
* given by the bios and saves the command line.
*/
void __init prom_init(void)
{
mips_machtype = MACH_WRPPMC;
add_memory_region(WRPPMC_SDRAM_SCS0_BASE, WRPPMC_SDRAM_SCS0_SIZE, BOOT_MEM_RAM);
add_memory_region(WRPPMC_BOOTROM_BASE, WRPPMC_BOOTROM_SIZE, BOOT_MEM_ROM_DATA);
wrppmc_early_printk("prom_init: GT64120 SDRAM Bank 0: 0x%x - 0x%08lx\n",
WRPPMC_SDRAM_SCS0_BASE, (WRPPMC_SDRAM_SCS0_BASE + WRPPMC_SDRAM_SCS0_SIZE));
}
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