diff options
Diffstat (limited to 'arch/mips/gt64120/wrppmc/setup.c')
| -rw-r--r-- | arch/mips/gt64120/wrppmc/setup.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/arch/mips/gt64120/wrppmc/setup.c b/arch/mips/gt64120/wrppmc/setup.c new file mode 100644 index 00000000000..20c591e49da --- /dev/null +++ b/arch/mips/gt64120/wrppmc/setup.c @@ -0,0 +1,173 @@ +/* + * 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/config.h> +#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/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 */ + +unsigned long __init prom_free_prom_memory(void) +{ + return 0; +} + +#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_setup(void) +{ + extern void wrppmc_time_init(void); + extern void wrppmc_timer_setup(struct irqaction *); + 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; + board_timer_setup = wrppmc_timer_setup; + + /* 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_machgroup = MACH_GROUP_GALILEO; + mips_machtype = MACH_EV64120A; + + 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)); +} |