/*********************************************************************** * * Copyright 2001 MontaVista Software Inc. * Author: jsun@mvista.com or jsun@junsun.net * * arch/mips/ddb5xxx/ddb5477/setup.c * Setup file for DDB5477. * * 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. */ #include #include #include #include #include #include #include #include #include #include /* for ROOT_DEV */ #include #include /* for HZ */ #include #include #include #include #include #include #include #include #include #include "lcd44780.h" // #define USE_CPU_COUNTER_TIMER /* whether we use cpu counter */ #ifdef USE_CPU_COUNTER_TIMER #define CPU_COUNTER_FREQUENCY (CONFIG_DDB5477_BUS_FREQUENCY*1000) #else /* otherwise we use special timer 1 */ #define SP_TIMER_FREQUENCY (CONFIG_DDB5477_BUS_FREQUENCY*1000) #define SP_TIMER_BASE DDB_SPT1CTRL_L #define SP_TIMER_IRQ (8 + 6) #endif static void ddb_machine_restart(char *command) { static void (*back_to_prom) (void) = (void (*)(void)) 0xbfc00000; u32 t; /* PCI cold reset */ ddb_pci_reset_bus(); /* CPU cold reset */ t = ddb_in32(DDB_CPUSTAT); db_assert((t&1)); ddb_out32(DDB_CPUSTAT, t); /* Call the PROM */ back_to_prom(); } static void ddb_machine_halt(void) { printk("DDB Vrc-5477 halted.\n"); while (1); } static void ddb_machine_power_off(void) { printk("DDB Vrc-5477 halted. Please turn off the power.\n"); while (1); } extern void rtc_ds1386_init(unsigned long base); static void __init ddb_time_init(void) { #if defined(USE_CPU_COUNTER_TIMER) mips_counter_frequency = CPU_COUNTER_FREQUENCY; #endif /* we have ds1396 RTC chip */ if (mips_machtype == MACH_NEC_ROCKHOPPER) { rtc_ds1386_init(KSEG1ADDR(DDB_LCS2_BASE)); } else { rtc_ds1386_init(KSEG1ADDR(DDB_LCS1_BASE)); } } extern int setup_irq(unsigned int irq, struct irqaction *irqaction); static void __init ddb_timer_setup(struct irqaction *irq) { #if defined(USE_CPU_COUNTER_TIMER) unsigned int count; /* we are using the cpu counter for timer interrupts */ setup_irq(7, irq); /* to generate the first timer interrupt */ count = read_32bit_cp0_register(CP0_COUNT); write_32bit_cp0_register(CP0_COMPARE, count + 1000); #else /* if we don't use Special purpose timer 1 */ ddb_out32(SP_TIMER_BASE, SP_TIMER_FREQUENCY/HZ); ddb_out32(SP_TIMER_BASE+4, 0x1); setup_irq(SP_TIMER_IRQ, irq); #endif } static void ddb5477_board_init(void); extern void ddb5477_irq_setup(void); #if defined(CONFIG_BLK_DEV_INITRD) extern unsigned long __rd_start, __rd_end, initrd_start, initrd_end; #endif void __init ddb_setup(void) { extern int panic_timeout; irq_setup = ddb5477_irq_setup; set_io_port_base(KSEG1ADDR(DDB_PCI_IO_BASE)); board_time_init = ddb_time_init; board_timer_setup = ddb_timer_setup; _machine_restart = ddb_machine_restart; _machine_halt = ddb_machine_halt; _machine_power_off = ddb_machine_power_off; /* setup resource limits */ ioport_resource.end = DDB_PCI0_IO_SIZE + DDB_PCI1_IO_SIZE - 1; iomem_resource.end = 0xffffffff; /* Reboot on panic */ panic_timeout = 180; #ifdef CONFIG_FB conswitchp = &dummy_con; #endif /* initialize board - we don't trust the loader */ ddb5477_board_init(); #if defined(CONFIG_BLK_DEV_INITRD) ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0); initrd_start = (unsigned long)&__rd_start; initrd_end = (unsigned long)&__rd_end; #endif } static void __init ddb5477_board_init() { /* ----------- setup PDARs ------------ */ /* SDRAM should have been set */ db_assert(ddb_in32(DDB_SDRAM0) == ddb_calc_pdar(DDB_SDRAM_BASE, board_ram_size, 32, 0, 1)); /* SDRAM1 should be turned off. What is this for anyway ? */ db_assert( (ddb_in32(DDB_SDRAM1) & 0xf) == 0); /* Setup local bus. */ /* Flash U12 PDAR and timing. */ ddb_set_pdar(DDB_LCS0, DDB_LCS0_BASE, DDB_LCS0_SIZE, 16, 0, 0); ddb_out32(DDB_LCST0, 0x00090842); /* We need to setup LCS1 and LCS2 differently based on the board_version */ if (mips_machtype == MACH_NEC_ROCKHOPPER) { /* Flash U13 PDAR and timing. */ ddb_set_pdar(DDB_LCS1, DDB_LCS1_BASE, DDB_LCS1_SIZE, 16, 0, 0); ddb_out32(DDB_LCST1, 0x00090842); /* EPLD (NVRAM, switch, LCD, and mezzanie). */ ddb_set_pdar(DDB_LCS2, DDB_LCS2_BASE, DDB_LCS2_SIZE, 8, 0, 0); } else { /* misc */ ddb_set_pdar(DDB_LCS1, DDB_LCS1_BASE, DDB_LCS1_SIZE, 8, 0, 0); /* mezzanie (?) */ ddb_set_pdar(DDB_LCS2, DDB_LCS2_BASE, DDB_LCS2_SIZE, 16, 0, 0); } /* verify VRC5477 base addr */ db_assert(ddb_in32(DDB_VRC5477) == ddb_calc_pdar(DDB_VRC5477_BASE, DDB_VRC5477_SIZE, 32, 0, 1)); /* verify BOOT ROM addr */ db_assert(ddb_in32(DDB_BOOTCS) == ddb_calc_pdar(DDB_BOOTCS_BASE, DDB_BOOTCS_SIZE, 8, 0, 0)); /* setup PCI windows - window0 for MEM/config, window1 for IO */ ddb_set_pdar(DDB_PCIW0, DDB_PCI0_MEM_BASE, DDB_PCI0_MEM_SIZE, 32, 0, 1); ddb_set_pdar(DDB_PCIW1, DDB_PCI0_IO_BASE, DDB_PCI0_IO_SIZE, 32, 0, 1); ddb_set_pdar(DDB_IOPCIW0, DDB_PCI1_MEM_BASE, DDB_PCI1_MEM_SIZE, 32, 0, 1); ddb_set_pdar(DDB_IOPCIW1, DDB_PCI1_IO_BASE, DDB_PCI1_IO_SIZE, 32, 0, 1); /* ------------ reset PCI bus and BARs ----------------- */ ddb_pci_reset_bus(); ddb_out32(DDB_BARM010, 0x00000008); ddb_out32(DDB_BARM011, 0x00000008); ddb_out32(DDB_BARC0, 0xffffffff); ddb_out32(DDB_BARM230, 0xffffffff); ddb_out32(DDB_BAR00, 0xffffffff); ddb_out32(DDB_BAR10, 0xffffffff); ddb_out32(DDB_BAR20, 0xffffffff); ddb_out32(DDB_BAR30, 0xffffffff); ddb_out32(DDB_BAR40, 0xffffffff); ddb_out32(DDB_BAR50, 0xffffffff); ddb_out32(DDB_BARB0, 0xffffffff); ddb_out32(DDB_BARC1, 0xffffffff); ddb_out32(DDB_BARM231, 0xffffffff); ddb_out32(DDB_BAR01, 0xffffffff); ddb_out32(DDB_BAR11, 0xffffffff); ddb_out32(DDB_BAR21, 0xffffffff); ddb_out32(DDB_BAR31, 0xffffffff); ddb_out32(DDB_BAR41, 0xffffffff); ddb_out32(DDB_BAR51, 0xffffffff); ddb_out32(DDB_BARB1, 0xffffffff); /* * We use pci master register 0 for memory space / config space * And we use register 1 for IO space. * Note that for memory space, we bump up the pci base address * so that we have 1:1 mapping between PCI memory and cpu physical. * For PCI IO space, it starts from 0 in PCI IO space but with * DDB_xx_IO_BASE in CPU physical address space. */ ddb_set_pmr(DDB_PCIINIT00, DDB_PCICMD_MEM, DDB_PCI0_MEM_BASE, DDB_PCI_ACCESS_32); ddb_set_pmr(DDB_PCIINIT10, DDB_PCICMD_IO, 0, DDB_PCI_ACCESS_32); ddb_set_pmr(DDB_PCIINIT01, DDB_PCICMD_MEM, DDB_PCI1_MEM_BASE, DDB_PCI_ACCESS_32); ddb_set_pmr(DDB_PCIINIT11, DDB_PCICMD_IO, DDB_PCI0_IO_SIZE, DDB_PCI_ACCESS_32); /* PCI cross window should be set properly */ ddb_set_pdar(DDB_BARP00, DDB_PCI1_MEM_BASE, DDB_PCI1_MEM_SIZE, 32, 0, 1); ddb_set_pdar(DDB_BARP10, DDB_PCI1_IO_BASE, DDB_PCI1_IO_SIZE, 32, 0, 1); ddb_set_pdar(DDB_BARP01, DDB_PCI0_MEM_BASE, DDB_PCI0_MEM_SIZE, 32, 0, 1); ddb_set_pdar(DDB_BARP11, DDB_PCI0_IO_BASE, DDB_PCI0_IO_SIZE, 32, 0, 1); /* enable USB input buffers */ ddb_out32(DDB_PIBMISC, 0x00000007); /* For dual-function pins, make them all non-GPIO */ ddb_out32(DDB_GIUFUNSEL, 0x0); // ddb_out32(DDB_GIUFUNSEL, 0xfe0fcfff); /* NEC recommanded value */ if (mips_machtype == MACH_NEC_ROCKHOPPER) { printk("lcd44780: initializing\n"); lcd44780_init(); lcd44780_puts("HardHat Linux!!!"); } }