diff options
Diffstat (limited to 'arch/mips/emma2rh/markeins/setup.c')
| -rw-r--r-- | arch/mips/emma2rh/markeins/setup.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/arch/mips/emma2rh/markeins/setup.c b/arch/mips/emma2rh/markeins/setup.c new file mode 100644 index 0000000..7d98fdb --- /dev/null +++ b/arch/mips/emma2rh/markeins/setup.c @@ -0,0 +1,182 @@ +/* + * arch/mips/emma2rh/markeins/setup.c + * This file is setup for EMMA2RH Mark-eins. + * + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/ddb5xxx/ddb5477/setup.c. + * + * Copyright 2001 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/config.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/initrd.h> +#include <linux/irq.h> +#include <linux/ide.h> +#include <linux/ioport.h> +#include <linux/param.h> /* for HZ */ +#include <linux/root_dev.h> +#include <linux/serial.h> +#include <linux/serial_core.h> + +#include <asm/cpu.h> +#include <asm/bootinfo.h> +#include <asm/addrspace.h> +#include <asm/time.h> +#include <asm/bcache.h> +#include <asm/irq.h> +#include <asm/reboot.h> +#include <asm/gdb-stub.h> +#include <asm/traps.h> +#include <asm/debug.h> + +#include <asm/emma2rh/emma2rh.h> + +#define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */ + +extern void markeins_led(const char *); + +static int bus_frequency = 0; + +static void markeins_machine_restart(char *command) +{ + static void (*back_to_prom) (void) = (void (*)(void))0xbfc00000; + + printk("cannot EMMA2RH Mark-eins restart.\n"); + markeins_led("restart."); + back_to_prom(); +} + +static void markeins_machine_halt(void) +{ + printk("EMMA2RH Mark-eins halted.\n"); + markeins_led("halted."); + while (1) ; +} + +static void markeins_machine_power_off(void) +{ + printk("EMMA2RH Mark-eins halted. Please turn off the power.\n"); + markeins_led("poweroff."); + while (1) ; +} + +static unsigned long clock[4] = { 166500000, 187312500, 199800000, 210600000 }; + +static unsigned int __init detect_bus_frequency(unsigned long rtc_base) +{ + u32 reg; + + /* detect from boot strap */ + reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0); + reg = (reg >> 4) & 0x3; + return clock[reg]; +} + +static void __init emma2rh_time_init(void) +{ + u32 reg; + if (bus_frequency == 0) + bus_frequency = detect_bus_frequency(0); + + reg = emma2rh_in32(EMMA2RH_BHIF_STRAP_0); + if ((reg & 0x3) == 0) + reg = (reg >> 6) & 0x3; + else { + reg = emma2rh_in32(EMMA2RH_BHIF_MAIN_CTRL); + reg = (reg >> 4) & 0x3; + } + mips_hpt_frequency = (bus_frequency * (4 + reg)) / 4 / 2; +} + +static void __init emma2rh_timer_setup(struct irqaction *irq) +{ + /* we are using the cpu counter for timer interrupts */ + setup_irq(CPU_IRQ_BASE + 7, irq); +} + +static void markeins_board_init(void); +extern void markeins_irq_setup(void); + +static void inline __init markeins_sio_setup(void) +{ +#ifdef CONFIG_KGDB_8250 + struct uart_port emma_port; + + memset(&emma_port, 0, sizeof(emma_port)); + + emma_port.flags = + UPF_BOOT_AUTOCONF | UPF_SKIP_TEST; + emma_port.iotype = UPIO_MEM; + emma_port.regshift = 4; /* I/O addresses are every 8 bytes */ + emma_port.uartclk = 18544000; /* Clock rate of the chip */ + + emma_port.line = 0; + emma_port.mapbase = KSEG1ADDR(EMMA2RH_PFUR0_BASE + 3); + emma_port.membase = (u8*)emma_port.mapbase; + early_serial_setup(&emma_port); + + emma_port.line = 1; + emma_port.mapbase = KSEG1ADDR(EMMA2RH_PFUR1_BASE + 3); + emma_port.membase = (u8*)emma_port.mapbase; + early_serial_setup(&emma_port); + + emma_port.irq = EMMA2RH_IRQ_PFUR1; + kgdb8250_add_port(1, &emma_port); +#endif +} + +void __init plat_mem_setup(void) +{ + /* initialize board - we don't trust the loader */ + markeins_board_init(); + + set_io_port_base(KSEG1ADDR(EMMA2RH_PCI_IO_BASE)); + + board_time_init = emma2rh_time_init; + board_timer_setup = emma2rh_timer_setup; + + _machine_restart = markeins_machine_restart; + _machine_halt = markeins_machine_halt; + pm_power_off = markeins_machine_power_off; + + /* setup resource limits */ + ioport_resource.start = EMMA2RH_PCI_IO_BASE; + ioport_resource.end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1; + iomem_resource.start = EMMA2RH_IO_BASE; + iomem_resource.end = EMMA2RH_ROM_BASE - 1; + + /* Reboot on panic */ + panic_timeout = 180; + + markeins_sio_setup(); +} + +static void __init markeins_board_init(void) +{ + u32 val; + + val = emma2rh_in32(EMMA2RH_PBRD_INT_EN); /* open serial interrupts. */ + emma2rh_out32(EMMA2RH_PBRD_INT_EN, val | 0xaa); + val = emma2rh_in32(EMMA2RH_PBRD_CLKSEL); /* set serial clocks. */ + emma2rh_out32(EMMA2RH_PBRD_CLKSEL, val | 0x5); /* 18MHz */ + emma2rh_out32(EMMA2RH_PCI_CONTROL, 0); + + markeins_led("MVL E2RH"); +} |
