33,7 → 33,6 |
*/ |
|
#include <arch.h> |
#include <arch/boot.h> |
#include <arch/cp0.h> |
#include <arch/exception.h> |
#include <mm/as.h> |
48,44 → 47,55 |
#include <sysinfo/sysinfo.h> |
|
#include <arch/interrupt.h> |
#include <arch/drivers/arc.h> |
#include <console/chardev.h> |
#include <arch/barrier.h> |
#include <arch/debugger.h> |
#include <genarch/fb/fb.h> |
#include <genarch/fb/visuals.h> |
#include <macros.h> |
#include <ddi/device.h> |
#include <config.h> |
#include <string.h> |
#include <arch/drivers/msim.h> |
|
#include <arch/asm/regname.h> |
|
/* Size of the code jumping to the exception handler code |
* - J+NOP |
/* Size of the code jumping to the exception handler code |
* - J+NOP |
*/ |
#define EXCEPTION_JUMP_SIZE 8 |
#define EXCEPTION_JUMP_SIZE 8 |
|
#define TLB_EXC ((char *) 0x80000000) |
#define NORM_EXC ((char *) 0x80000180) |
#define CACHE_EXC ((char *) 0x80000100) |
#define TLB_EXC ((char *) 0x80000000) |
#define NORM_EXC ((char *) 0x80000180) |
#define CACHE_EXC ((char *) 0x80000100) |
|
|
/* Why the linker moves the variable 64K away in assembler |
* when not in .text section ???????? |
* when not in .text section? |
*/ |
|
/* Stack pointer saved when entering user mode */ |
uintptr_t supervisor_sp __attribute__ ((section (".text"))); |
/* Stack pointer saved when entering user mode */ |
/* TODO: How do we do it on SMP system???? */ |
bootinfo_t bootinfo __attribute__ ((section (".text"))); |
|
void arch_pre_main(void) |
count_t cpu_count = 0; |
|
/** Performs mips32-specific initialization before main_bsp() is called. */ |
void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo) |
{ |
/* Setup usermode */ |
init.cnt = bootinfo.cnt; |
init.cnt = bootinfo->cnt; |
|
uint32_t i; |
count_t i; |
for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); i++) { |
init.tasks[i].addr = bootinfo->tasks[i].addr; |
init.tasks[i].size = bootinfo->tasks[i].size; |
strncpy(init.tasks[i].name, bootinfo->tasks[i].name, |
CONFIG_TASK_NAME_BUFLEN); |
} |
|
for (i = 0; i < bootinfo.cnt; i++) { |
init.tasks[i].addr = bootinfo.tasks[i].addr; |
init.tasks[i].size = bootinfo.tasks[i].size; |
for (i = 0; i < CPUMAP_MAX_RECORDS; i++) { |
if ((bootinfo->cpumap & (1 << i)) != 0) |
cpu_count++; |
} |
} |
|
96,24 → 106,27 |
|
/* Initialize dispatch table */ |
exception_init(); |
arc_init(); |
|
/* Copy the exception vectors to the right places */ |
memcpy(TLB_EXC, (char *) tlb_refill_entry, EXCEPTION_JUMP_SIZE); |
smc_coherence_block(TLB_EXC, EXCEPTION_JUMP_SIZE); |
memcpy(NORM_EXC, (char *) exception_entry, EXCEPTION_JUMP_SIZE); |
smc_coherence_block(NORM_EXC, EXCEPTION_JUMP_SIZE); |
memcpy(CACHE_EXC, (char *) cache_error_entry, EXCEPTION_JUMP_SIZE); |
smc_coherence_block(CACHE_EXC, EXCEPTION_JUMP_SIZE); |
|
/* |
* Switch to BEV normal level so that exception vectors point to the kernel. |
* Clear the error level. |
* Switch to BEV normal level so that exception vectors point to the |
* kernel. Clear the error level. |
*/ |
cp0_status_write(cp0_status_read() & ~(cp0_status_bev_bootstrap_bit|cp0_status_erl_error_bit)); |
|
/* |
* Mask all interrupts |
cp0_status_write(cp0_status_read() & |
~(cp0_status_bev_bootstrap_bit | cp0_status_erl_error_bit)); |
|
/* |
* Mask all interrupts |
*/ |
cp0_mask_all_int(); |
|
|
debugger_init(); |
} |
|
120,11 → 133,35 |
void arch_post_mm_init(void) |
{ |
interrupt_init(); |
console_init(device_assign_devno()); |
msim_console(device_assign_devno()); |
#ifdef CONFIG_FB |
fb_init(0x12000000, 640, 480, 1920, VISUAL_RGB_8_8_8); // gxemul framebuffer |
/* GXemul framebuffer */ |
fb_properties_t gxemul_prop = { |
.addr = 0x12000000, |
.offset = 0, |
.x = 640, |
.y = 480, |
.scan = 1920, |
.visual = VISUAL_BGR_8_8_8, |
}; |
fb_init(&gxemul_prop); |
#endif |
sysinfo_set_item_val("machine." STRING(MACHINE), NULL, 1); |
|
#ifdef MACHINE_msim |
sysinfo_set_item_val("machine.msim", NULL, 1); |
#endif |
|
#ifdef MACHINE_simics |
sysinfo_set_item_val("machine.simics", NULL, 1); |
#endif |
|
#ifdef MACHINE_bgxemul |
sysinfo_set_item_val("machine.bgxemul", NULL, 1); |
#endif |
|
#ifdef MACHINE_lgxemul |
sysinfo_set_item_val("machine.lgxemul", NULL, 1); |
#endif |
} |
|
void arch_post_cpu_init(void) |
139,15 → 176,19 |
{ |
} |
|
void calibrate_delay_loop(void) |
{ |
} |
|
void userspace(uspace_arg_t *kernel_uarg) |
{ |
/* EXL = 1, UM = 1, IE = 1 */ |
cp0_status_write(cp0_status_read() | (cp0_status_exl_exception_bit | |
cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
cp0_status_um_bit | cp0_status_ie_enabled_bit)); |
cp0_epc_write((uintptr_t) kernel_uarg->uspace_entry); |
userspace_asm(((uintptr_t) kernel_uarg->uspace_stack + PAGE_SIZE), |
(uintptr_t) kernel_uarg->uspace_uarg, |
(uintptr_t) kernel_uarg->uspace_entry); |
(uintptr_t) kernel_uarg->uspace_uarg, |
(uintptr_t) kernel_uarg->uspace_entry); |
|
while (1); |
} |
160,7 → 201,8 |
/** Perform mips32 specific tasks needed before the new thread is scheduled. */ |
void before_thread_runs_arch(void) |
{ |
supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE-SP_DELTA]; |
supervisor_sp = (uintptr_t) &THREAD->kstack[THREAD_STACK_SIZE - |
SP_DELTA]; |
} |
|
void after_thread_ran_arch(void) |
179,11 → 221,24 |
|
void arch_reboot(void) |
{ |
if (!arc_reboot()) |
___halt(); |
___halt(); |
|
while (1); |
} |
|
/** Construct function pointer |
* |
* @param fptr function pointer structure |
* @param addr function address |
* @param caller calling function address |
* |
* @return address of the function pointer |
* |
*/ |
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller) |
{ |
return addr; |
} |
|
/** @} |
*/ |