HelenOS sources
This source file includes following definitions.
- mips32_pre_main
- mips32_pre_mm_init
- mips32_post_mm_init
- mips32_post_smp_init
- calibrate_delay_loop
- arch_get_initial_sp
- userspace
- before_task_runs_arch
- before_thread_runs_arch
- after_thread_ran_arch
- arch_reboot
- arch_construct_function
- irq_initialize_arch
#include <arch.h>
#include <arch/arch.h>
#include <typedefs.h>
#include <errno.h>
#include <interrupt.h>
#include <macros.h>
#include <str.h>
#include <memw.h>
#include <preemption.h>
#include <userspace.h>
#include <stdbool.h>
#include <syscall/syscall.h>
#include <sysinfo/sysinfo.h>
#include <arch/debug.h>
#include <arch/debugger.h>
#include <arch/machine_func.h>
#define EXCEPTION_JUMP_SIZE 8
#define TLB_EXC ((char *) 0x80000000)
#define NORM_EXC ((char *) 0x80000180)
#define CACHE_EXC ((char *) 0x80000100)
static void mips32_pre_mm_init(void);
static void mips32_post_mm_init(void);
static void mips32_post_smp_init(void);
arch_ops_t mips32_ops = {
.pre_mm_init = mips32_pre_mm_init,
.post_mm_init = mips32_post_mm_init,
.post_smp_init = mips32_post_smp_init,
};
arch_ops_t *arch_ops = &mips32_ops;
uintptr_t supervisor_sp;
size_t cpu_count = 0;
#if defined(MACHINE_lmalta) || defined(MACHINE_bmalta)
size_t sdram_size = 0;
#endif
void mips32_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
{
init.cnt = min3(bootinfo->taskmap.cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS);
size_t i;
for (i = 0; i < init.cnt; i++) {
init.tasks[i].paddr = KA2PA(bootinfo->taskmap.tasks[i].addr);
init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
bootinfo->taskmap.tasks[i].name);
}
for (i = 0; i < CPUMAP_MAX_RECORDS; i++) {
if ((bootinfo->cpumap & (1 << i)) != 0)
cpu_count++;
}
#if defined(MACHINE_lmalta) || defined(MACHINE_bmalta)
sdram_size = bootinfo->sdram_size;
#endif
str_cpy(bargs, CONFIG_BOOT_ARGUMENTS_BUFLEN, bootinfo->bootargs);
machine_ops_init();
}
void mips32_pre_mm_init(void)
{
interrupts_disable();
exception_init();
memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE);
smc_coherence(TLB_EXC, EXCEPTION_JUMP_SIZE);
memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE);
smc_coherence(NORM_EXC, EXCEPTION_JUMP_SIZE);
memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE);
smc_coherence(CACHE_EXC, EXCEPTION_JUMP_SIZE);
cp0_status_write(cp0_status_read() &
~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit));
cp0_mask_all_int();
debugger_init();
}
void mips32_post_mm_init(void)
{
interrupt_init();
machine_init();
machine_output_init();
}
void mips32_post_smp_init(void)
{
sysinfo_set_item_data("platform", NULL,
(void *) machine_get_platform_name(),
str_size(machine_get_platform_name()));
machine_input_init();
}
void calibrate_delay_loop(void)
{
}
uintptr_t arch_get_initial_sp(uintptr_t stack_base, uintptr_t stack_size)
{
return stack_base + stack_size;
}
void userspace(uintptr_t pc, uintptr_t sp)
{
cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit |
cp0_status_um_bit | cp0_status_ie_enabled_bit));
cp0_epc_write(pc);
userspace_asm(sp, pc);
while (true)
;
}
void before_task_runs_arch(void)
{
}
void before_thread_runs_arch(void)
{
supervisor_sp =
(uintptr_t) &THREAD->kstack[STACK_SIZE];
}
void after_thread_ran_arch(void)
{
}
void arch_reboot(void)
{
___halt();
while (true)
;
}
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
{
return addr;
}
void irq_initialize_arch(irq_t *irq)
{
(void) irq;
}
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