diff options
Diffstat (limited to 'arch/mips/momentum/ocelot_c/setup.c')
| -rw-r--r-- | arch/mips/momentum/ocelot_c/setup.c | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/arch/mips/momentum/ocelot_c/setup.c b/arch/mips/momentum/ocelot_c/setup.c new file mode 100644 index 00000000000..021c00e3c07 --- /dev/null +++ b/arch/mips/momentum/ocelot_c/setup.c @@ -0,0 +1,363 @@ +/* + * BRIEF MODULE DESCRIPTION + * Momentum Computer Ocelot-C and -CS board dependent boot routines + * + * Copyright (C) 1996, 1997, 2001 Ralf Baechle + * Copyright (C) 2000 RidgeRun, Inc. + * Copyright (C) 2001 Red Hat, Inc. + * Copyright (C) 2002 Momentum Computer + * + * Author: Matthew Dharm, Momentum Computer + * mdharm@momenco.com + * + * Louis Hamilton, Red Hat, Inc. + * hamilton@redhat.com [MIPS64 modifications] + * + * Author: RidgeRun, Inc. + * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com + * + * Copyright 2001 MontaVista Software Inc. + * Author: jsun@mvista.com or jsun@junsun.net + * + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#include <linux/config.h> +#include <linux/bcd.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/ioport.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/timex.h> +#include <linux/vmalloc.h> +#include <asm/time.h> +#include <asm/bootinfo.h> +#include <asm/page.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/pci.h> +#include <asm/processor.h> +#include <asm/ptrace.h> +#include <asm/reboot.h> +#include <linux/bootmem.h> +#include <linux/blkdev.h> +#include <asm/mv64340.h> +#include "ocelot_c_fpga.h" + +unsigned long marvell_base; +extern unsigned long mv64340_sram_base; +unsigned long cpu_clock; + +/* These functions are used for rebooting or halting the machine*/ +extern void momenco_ocelot_restart(char *command); +extern void momenco_ocelot_halt(void); +extern void momenco_ocelot_power_off(void); + +void momenco_time_init(void); + +static char reset_reason; + +void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1, unsigned long entryhi, unsigned long pagemask); + +static unsigned long ENTRYLO(unsigned long paddr) +{ + return ((paddr & PAGE_MASK) | + (_PAGE_PRESENT | __READABLE | __WRITEABLE | _PAGE_GLOBAL | + _CACHE_UNCACHED)) >> 6; +} + +/* setup code for a handoff from a version 2 PMON 2000 PROM */ +void PMON_v2_setup(void) +{ + /* Some wired TLB entries for the MV64340 and perhiperals. The + MV64340 is going to be hit on every IRQ anyway - there's + absolutely no point in letting it be a random TLB entry, as + it'll just cause needless churning of the TLB. And we use + the other half for the serial port, which is just a PITA + otherwise :) + + Device Physical Virtual + MV64340 Internal Regs 0xf4000000 0xf4000000 + Ocelot-C[S] PLD (CS0) 0xfc000000 0xfc000000 + NVRAM (CS1) 0xfc800000 0xfc800000 + UARTs (CS2) 0xfd000000 0xfd000000 + Internal SRAM 0xfe000000 0xfe000000 + M-Systems DOC (CS3) 0xff000000 0xff000000 + */ + printk("PMON_v2_setup\n"); + +#ifdef CONFIG_MIPS64 + /* marvell and extra space */ + add_wired_entry(ENTRYLO(0xf4000000), ENTRYLO(0xf4010000), 0xfffffffff4000000, PM_64K); + /* fpga, rtc, and uart */ + add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000), 0xfffffffffc000000, PM_16M); + /* m-sys and internal SRAM */ + add_wired_entry(ENTRYLO(0xfe000000), ENTRYLO(0xff000000), 0xfffffffffe000000, PM_16M); + + marvell_base = 0xfffffffff4000000; + mv64340_sram_base = 0xfffffffffe000000; +#else + /* marvell and extra space */ + add_wired_entry(ENTRYLO(0xf4000000), ENTRYLO(0xf4010000), 0xf4000000, PM_64K); + /* fpga, rtc, and uart */ + add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000), 0xfc000000, PM_16M); + /* m-sys and internal SRAM */ + add_wired_entry(ENTRYLO(0xfe000000), ENTRYLO(0xff000000), 0xfe000000, PM_16M); + + marvell_base = 0xf4000000; + mv64340_sram_base = 0xfe000000; +#endif +} + +unsigned long m48t37y_get_time(void) +{ +#ifdef CONFIG_MIPS64 + unsigned char *rtc_base = (unsigned char*)0xfffffffffc800000; +#else + unsigned char* rtc_base = (unsigned char*)0xfc800000; +#endif + unsigned int year, month, day, hour, min, sec; + + /* stop the update */ + rtc_base[0x7ff8] = 0x40; + + year = BCD2BIN(rtc_base[0x7fff]); + year += BCD2BIN(rtc_base[0x7ff1]) * 100; + + month = BCD2BIN(rtc_base[0x7ffe]); + + day = BCD2BIN(rtc_base[0x7ffd]); + + hour = BCD2BIN(rtc_base[0x7ffb]); + min = BCD2BIN(rtc_base[0x7ffa]); + sec = BCD2BIN(rtc_base[0x7ff9]); + + /* start the update */ + rtc_base[0x7ff8] = 0x00; + + return mktime(year, month, day, hour, min, sec); +} + +int m48t37y_set_time(unsigned long sec) +{ +#ifdef CONFIG_MIPS64 + unsigned char* rtc_base = (unsigned char*)0xfffffffffc800000; +#else + unsigned char* rtc_base = (unsigned char*)0xfc800000; +#endif + struct rtc_time tm; + + /* convert to a more useful format -- note months count from 0 */ + to_tm(sec, &tm); + tm.tm_mon += 1; + + /* enable writing */ + rtc_base[0x7ff8] = 0x80; + + /* year */ + rtc_base[0x7fff] = BIN2BCD(tm.tm_year % 100); + rtc_base[0x7ff1] = BIN2BCD(tm.tm_year / 100); + + /* month */ + rtc_base[0x7ffe] = BIN2BCD(tm.tm_mon); + + /* day */ + rtc_base[0x7ffd] = BIN2BCD(tm.tm_mday); + + /* hour/min/sec */ + rtc_base[0x7ffb] = BIN2BCD(tm.tm_hour); + rtc_base[0x7ffa] = BIN2BCD(tm.tm_min); + rtc_base[0x7ff9] = BIN2BCD(tm.tm_sec); + + /* day of week -- not really used, but let's keep it up-to-date */ + rtc_base[0x7ffc] = BIN2BCD(tm.tm_wday + 1); + + /* disable writing */ + rtc_base[0x7ff8] = 0x00; + + return 0; +} + +void momenco_timer_setup(struct irqaction *irq) +{ + setup_irq(7, irq); +} + +void momenco_time_init(void) +{ +#ifdef CONFIG_CPU_SR71000 + mips_hpt_frequency = cpu_clock; +#elif defined(CONFIG_CPU_RM7000) + mips_hpt_frequency = cpu_clock / 2; +#else +#error Unknown CPU for this board +#endif + printk("momenco_time_init cpu_clock=%d\n", cpu_clock); + board_timer_setup = momenco_timer_setup; + + rtc_get_time = m48t37y_get_time; + rtc_set_time = m48t37y_set_time; +} + +static void __init momenco_ocelot_c_setup(void) +{ + unsigned int tmpword; + + board_time_init = momenco_time_init; + + _machine_restart = momenco_ocelot_restart; + _machine_halt = momenco_ocelot_halt; + _machine_power_off = momenco_ocelot_power_off; + + /* + * initrd_start = (ulong)ocelot_initrd_start; + * initrd_end = (ulong)ocelot_initrd_start + (ulong)ocelot_initrd_size; + * initrd_below_start_ok = 1; + */ + + /* do handoff reconfiguration */ + PMON_v2_setup(); + + /* shut down ethernet ports, just to be sure our memory doesn't get + * corrupted by random ethernet traffic. + */ + MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8); + MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8); + MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8); + MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8); + do {} + while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff); + do {} + while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff); + do {} + while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff); + do {} + while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff); + MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0), + MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1); + MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1), + MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1); + + /* Turn off the Bit-Error LED */ + OCELOT_FPGA_WRITE(0x80, CLR); + + tmpword = OCELOT_FPGA_READ(BOARDREV); +#ifdef CONFIG_CPU_SR71000 + if (tmpword < 26) + printk("Momenco Ocelot-CS: Board Assembly Rev. %c\n", + 'A'+tmpword); + else + printk("Momenco Ocelot-CS: Board Assembly Revision #0x%x\n", + tmpword); +#else + if (tmpword < 26) + printk("Momenco Ocelot-C: Board Assembly Rev. %c\n", + 'A'+tmpword); + else + printk("Momenco Ocelot-C: Board Assembly Revision #0x%x\n", + tmpword); +#endif + + tmpword = OCELOT_FPGA_READ(FPGA_REV); + printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15); + tmpword = OCELOT_FPGA_READ(RESET_STATUS); + printk("Reset reason: 0x%x\n", tmpword); + switch (tmpword) { + case 0x1: + printk(" - Power-up reset\n"); + break; + case 0x2: + printk(" - Push-button reset\n"); + break; + case 0x4: + printk(" - cPCI bus reset\n"); + break; + case 0x8: + printk(" - Watchdog reset\n"); + break; + case 0x10: + printk(" - Software reset\n"); + break; + default: + printk(" - Unknown reset cause\n"); + } + reset_reason = tmpword; + OCELOT_FPGA_WRITE(0xff, RESET_STATUS); + + tmpword = OCELOT_FPGA_READ(CPCI_ID); + printk("cPCI ID register: 0x%02x\n", tmpword); + printk(" - Slot number: %d\n", tmpword & 0x1f); + printk(" - PCI bus present: %s\n", tmpword & 0x40 ? "yes" : "no"); + printk(" - System Slot: %s\n", tmpword & 0x20 ? "yes" : "no"); + + tmpword = OCELOT_FPGA_READ(BOARD_STATUS); + printk("Board Status register: 0x%02x\n", tmpword); + printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent"); + printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent"); + printk(" - L3 Cache size: %d MiB\n", (1<<((tmpword&12) >> 2))&~1); + printk(" - SDRAM size: %d MiB\n", 1<<(6+(tmpword&3))); + + switch(tmpword &3) { + case 3: + /* 512MiB */ + add_memory_region(0x0, 0x200<<20, BOOT_MEM_RAM); + break; + case 2: + /* 256MiB */ + add_memory_region(0x0, 0x100<<20, BOOT_MEM_RAM); + break; + case 1: + /* 128MiB */ + add_memory_region(0x0, 0x80<<20, BOOT_MEM_RAM); + break; + case 0: + /* 1GiB -- needs CONFIG_HIGHMEM */ + add_memory_region(0x0, 0x400<<20, BOOT_MEM_RAM); + break; + } +} + +early_initcall(momenco_ocelot_c_setup); + +#ifndef CONFIG_MIPS64 +/* This needs to be one of the first initcalls, because no I/O port access + can work before this */ +static int io_base_ioremap(void) +{ + /* we're mapping PCI accesses from 0xc0000000 to 0xf0000000 */ + void *io_remap_range = ioremap(0xc0000000, 0x30000000); + + if (!io_remap_range) { + panic("Could not ioremap I/O port range"); + } + printk("io_remap_range set at 0x%08x\n", (uint32_t)io_remap_range); + set_io_port_base(io_remap_range - 0xc0000000); + + return 0; +} + +module_init(io_base_ioremap); +#endif |