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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/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 <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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/* 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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bootinfo_t bootinfo __attribute__ ((section (".text")));
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uintptr_t supervisor_sp __attribute__ ((section (".text")));
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count_t cpu_count = 0;
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void arch_pre_main(void)
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void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
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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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    uint32_t i;
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    count_t i;
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    for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) {
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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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    }
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    for (i = 0; i < bootinfo.cnt; i++) {
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    for (i = 0; i < CPUMAP_MAX_RECORDS; i++) {
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        init.tasks[i].addr = bootinfo.tasks[i].addr;
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        if ((bootinfo->cpumap & (1 << i)) != 0)
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        init.tasks[i].size = bootinfo.tasks[i].size;
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            cpu_count++;
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    }
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    }
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}
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}
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void arch_pre_mm_init(void)
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void arch_pre_mm_init(void)
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{
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{
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        .visual = VISUAL_BGR_8_8_8,
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        .visual = VISUAL_BGR_8_8_8,
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    };
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    };
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    fb_init(&gxemul_prop);
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    fb_init(&gxemul_prop);
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#endif
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#endif
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#ifdef msim
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#ifdef MACHINE_msim
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    sysinfo_set_item_val("machine.msim", NULL, 1);
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    sysinfo_set_item_val("machine.msim", NULL, 1);
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#endif
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#endif
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#ifdef simics
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#ifdef MACHINE_simics
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    sysinfo_set_item_val("machine.simics", NULL, 1);
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    sysinfo_set_item_val("machine.simics", NULL, 1);
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#endif
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#endif
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#ifdef bgxemul
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#ifdef MACHINE_bgxemul
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    sysinfo_set_item_val("machine.bgxemul", NULL, 1);
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    sysinfo_set_item_val("machine.bgxemul", NULL, 1);
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#endif
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#endif
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#ifdef lgxemul
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#ifdef MACHINE_lgxemul
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    sysinfo_set_item_val("machine.lgxemul", NULL, 1);
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    sysinfo_set_item_val("machine.lgxemul", NULL, 1);
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#endif
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#endif
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}
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}
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void arch_post_cpu_init(void)
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void arch_post_cpu_init(void)
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void arch_post_smp_init(void)
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void arch_post_smp_init(void)
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{
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{
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}
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}
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- 
 
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void calibrate_delay_loop(void)
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{
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}
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void userspace(uspace_arg_t *kernel_uarg)
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void userspace(uspace_arg_t *kernel_uarg)
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{
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{
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    /* EXL = 1, UM = 1, IE = 1 */
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    /* EXL = 1, UM = 1, IE = 1 */
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    cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
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    cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
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        cp0_status_um_bit | cp0_status_ie_enabled_bit));
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        cp0_status_um_bit | cp0_status_ie_enabled_bit));