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/*
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/*
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 * Copyright (c) 2003-2004 Jakub Jermar
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 * Copyright (c) 2003-2004 Jakub Jermar
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 *
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 *
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 * - Redistributions of source code must retain the above copyright
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *   derived from this software without specific prior written permission.
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 *
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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/** @addtogroup mips32
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/** @addtogroup mips32
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 * @{
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 * @{
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 */
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 */
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/** @file
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/** @file
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 */
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 */
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#include <arch.h>
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#include <arch.h>
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#include <arch/boot.h>
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#include <arch/boot.h>
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#include <arch/cp0.h>
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#include <arch/cp0.h>
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#include <arch/exception.h>
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#include <arch/exception.h>
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#include <mm/as.h>
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#include <mm/as.h>
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#include <userspace.h>
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#include <userspace.h>
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#include <arch/console.h>
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#include <arch/console.h>
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#include <memstr.h>
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#include <memstr.h>
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#include <proc/thread.h>
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#include <proc/thread.h>
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#include <proc/uarg.h>
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#include <proc/uarg.h>
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#include <print.h>
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#include <print.h>
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#include <syscall/syscall.h>
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#include <syscall/syscall.h>
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#include <sysinfo/sysinfo.h>
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#include <sysinfo/sysinfo.h>
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#include <arch/interrupt.h>
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#include <arch/interrupt.h>
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#include <arch/drivers/arc.h>
-
 
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#include <console/chardev.h>
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#include <console/chardev.h>
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#include <arch/barrier.h>
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#include <arch/barrier.h>
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#include <arch/debugger.h>
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#include <arch/debugger.h>
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#include <genarch/fb/fb.h>
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#include <genarch/fb/fb.h>
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#include <genarch/fb/visuals.h>
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#include <genarch/fb/visuals.h>
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#include <macros.h>
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#include <macros.h>
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#include <ddi/device.h>
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#include <ddi/device.h>
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#include <arch/asm/regname.h>
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#include <arch/asm/regname.h>
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/* Size of the code jumping to the exception handler code
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/* Size of the code jumping to the exception handler code
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 * - J+NOP
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 * - J+NOP
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 */
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 */
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#define EXCEPTION_JUMP_SIZE    8
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#define EXCEPTION_JUMP_SIZE    8
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#define TLB_EXC ((char *) 0x80000000)
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#define TLB_EXC ((char *) 0x80000000)
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#define NORM_EXC ((char *) 0x80000180)
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#define NORM_EXC ((char *) 0x80000180)
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#define CACHE_EXC ((char *) 0x80000100)
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#define CACHE_EXC ((char *) 0x80000100)
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/* Why the linker moves the variable 64K away in assembler
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/* Why the linker moves the variable 64K away in assembler
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 * when not in .text section ????????
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 * when not in .text section ????????
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 */
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 */
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uintptr_t supervisor_sp __attribute__ ((section (".text")));
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uintptr_t supervisor_sp __attribute__ ((section (".text")));
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/* Stack pointer saved when entering user mode */
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/* Stack pointer saved when entering user mode */
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/* TODO: How do we do it on SMP system???? */
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/* TODO: How do we do it on SMP system???? */
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bootinfo_t bootinfo __attribute__ ((section (".text")));
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bootinfo_t bootinfo __attribute__ ((section (".text")));
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void arch_pre_main(void)
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void arch_pre_main(void)
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{
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{
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    /* Setup usermode */
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    /* Setup usermode */
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    init.cnt = bootinfo.cnt;
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    init.cnt = bootinfo.cnt;
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83
   
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    uint32_t i;
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    uint32_t i;
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85
   
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    for (i = 0; i < bootinfo.cnt; i++) {
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    for (i = 0; i < bootinfo.cnt; i++) {
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        init.tasks[i].addr = bootinfo.tasks[i].addr;
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        init.tasks[i].addr = bootinfo.tasks[i].addr;
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        init.tasks[i].size = bootinfo.tasks[i].size;
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        init.tasks[i].size = bootinfo.tasks[i].size;
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    }
89
    }
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}
90
}
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void arch_pre_mm_init(void)
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void arch_pre_mm_init(void)
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{
93
{
95
    /* It is not assumed by default */
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    /* It is not assumed by default */
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    interrupts_disable();
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    interrupts_disable();
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96
   
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    /* Initialize dispatch table */
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    /* Initialize dispatch table */
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    exception_init();
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    exception_init();
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    arc_init();
-
 
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102
    /* Copy the exception vectors to the right places */
100
    /* Copy the exception vectors to the right places */
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    memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE);
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    memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE);
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    smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE);
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    smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE);
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    memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE);
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    memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE);
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    smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE);
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    smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE);
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    memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE);
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    memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE);
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    smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE);
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    smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE);
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107
   
110
    /*
108
    /*
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     * Switch to BEV normal level so that exception vectors point to the
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     * Switch to BEV normal level so that exception vectors point to the
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     * kernel. Clear the error level.
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     * kernel. Clear the error level.
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     */
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     */
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    cp0_status_write(cp0_status_read() &
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    cp0_status_write(cp0_status_read() &
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        ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit));
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        ~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit));
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114
 
117
    /*
115
    /*
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     * Mask all interrupts
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     * Mask all interrupts
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     */
117
     */
120
    cp0_mask_all_int();
118
    cp0_mask_all_int();
121
       
119
       
122
    debugger_init();
120
    debugger_init();
123
}
121
}
124
 
122
 
125
void arch_post_mm_init(void)
123
void arch_post_mm_init(void)
126
{
124
{
127
    interrupt_init();
125
    interrupt_init();
128
    console_init(device_assign_devno());
126
    console_init(device_assign_devno());
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#ifdef CONFIG_FB
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#ifdef CONFIG_FB
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    /* GXemul framebuffer */
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    /* GXemul framebuffer */
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    fb_init(0x12000000, 640, 480, 1920, VISUAL_RGB_8_8_8);
129
    fb_init(0x12000000, 640, 480, 1920, VISUAL_RGB_8_8_8);
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#endif
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#endif
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    sysinfo_set_item_val("machine." STRING(MACHINE), NULL, 1);
131
    sysinfo_set_item_val("machine." STRING(MACHINE), NULL, 1);
134
}
132
}
135
 
133
 
136
void arch_post_cpu_init(void)
134
void arch_post_cpu_init(void)
137
{
135
{
138
}
136
}
139
 
137
 
140
void arch_pre_smp_init(void)
138
void arch_pre_smp_init(void)
141
{
139
{
142
}
140
}
143
 
141
 
144
void arch_post_smp_init(void)
142
void arch_post_smp_init(void)
145
{
143
{
146
}
144
}
147
 
145
 
148
void userspace(uspace_arg_t *kernel_uarg)
146
void userspace(uspace_arg_t *kernel_uarg)
149
{
147
{
150
    /* EXL = 1, UM = 1, IE = 1 */
148
    /* EXL = 1, UM = 1, IE = 1 */
151
    cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
149
    cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
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        cp0_status_um_bit | cp0_status_ie_enabled_bit));
150
        cp0_status_um_bit | cp0_status_ie_enabled_bit));
153
    cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry);
151
    cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry);
154
    userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE),
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    userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE),
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        (uintptr_t) kernel_uarg->uspace_uarg,
153
        (uintptr_t) kernel_uarg->uspace_uarg,
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        (uintptr_t) kernel_uarg->uspace_entry);
154
        (uintptr_t) kernel_uarg->uspace_entry);
157
   
155
   
158
    while (1)
156
    while (1)
159
        ;
157
        ;
160
}
158
}
161
 
159
 
162
/** Perform mips32 specific tasks needed before the new task is run. */
160
/** Perform mips32 specific tasks needed before the new task is run. */
163
void before_task_runs_arch(void)
161
void before_task_runs_arch(void)
164
{
162
{
165
}
163
}
166
 
164
 
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/** Perform mips32 specific tasks needed before the new thread is scheduled. */
165
/** Perform mips32 specific tasks needed before the new thread is scheduled. */
168
void before_thread_runs_arch(void)
166
void before_thread_runs_arch(void)
169
{
167
{
170
    supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE -
168
    supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE -
171
        SP_DELTA];
169
        SP_DELTA];
172
}
170
}
173
 
171
 
174
void after_thread_ran_arch(void)
172
void after_thread_ran_arch(void)
175
{
173
{
176
}
174
}
177
 
175
 
178
/** Set thread-local-storage pointer
176
/** Set thread-local-storage pointer
179
 *
177
 *
180
 * We have it currently in K1, it is
178
 * We have it currently in K1, it is
181
 * possible to have it separately in the future.
179
 * possible to have it separately in the future.
182
 */
180
 */
183
unative_t sys_tls_set(unative_t addr)
181
unative_t sys_tls_set(unative_t addr)
184
{
182
{
185
    return 0;
183
    return 0;
186
}
184
}
187
 
185
 
188
void arch_reboot(void)
186
void arch_reboot(void)
189
{
187
{
190
    if (!arc_reboot())
-
 
191
        ___halt();
188
    ___halt();
192
   
189
   
193
    while (1)
190
    while (1)
194
        ;
191
        ;
195
}
192
}
196
 
193
 
197
/** @}
194
/** @}
198
 */
195
 */
199
 
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