diff options
| author | Michal Idziorek <m.i@gmx.at> | 2015-05-16 20:42:37 +0200 |
|---|---|---|
| committer | Michal Idziorek <m.i@gmx.at> | 2015-05-16 20:42:37 +0200 |
| commit | 3bac6dd02d640923646b8ad988f509f47adab57f (patch) | |
| tree | 42d91a578fba55f6e0e6e473644aa7941ae1863c /kernel/smp.c | |
| parent | ec6d07e29d1d55afe9d2c6f7f25e9fed20819af6 (diff) | |
working on smp support, strange things happening!?
Diffstat (limited to 'kernel/smp.c')
| -rw-r--r-- | kernel/smp.c | 51 |
1 files changed, 30 insertions, 21 deletions
diff --git a/kernel/smp.c b/kernel/smp.c index 8d122ee..f776c72 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -16,19 +16,22 @@ uint32_t c1,c2,c3; volatile uint8_t proc; uint32_t cpu_counter[SMP_MAX_PROC]; +extern + void smp_main() { - /// TODO - /////// SYMMETRIC MULTIPROCESSING, APS get caought here, move it away /// - // catch the APs (Application Processors) -// if(mp==1) - { - uint32_t ebp=pmmngr_alloc_block()+4095; - asm volatile("mov %0, %%ebp"::"r"(ebp)); - asm volatile("mov %ebp, %esp"); - asm volatile("jmp kernel_ap"); - } + // int_install(); + // x86_int_enable(); + switch_to_user_mode(); + + while(1); + + uint32_t ebp=pmmngr_alloc_block()+4095; + + asm volatile("mov %0, %%ebp"::"r"(ebp)); + asm volatile("mov %ebp, %esp"); + asm volatile("jmp kernel_ap"); proc=c1=c2=c3=0; for(int i=0;i<SMP_MAX_PROC;i++)cpu_counter[i]=0; @@ -58,22 +61,20 @@ void smp_log_procdata(smp_processors *procdata) } + // this will start all our application processors! -void smp_start_aps(smp_processors *pros,uint8_t *start_sel) -{ +void smp_start_aps(smp_processors *pros,char *path) +{ + //lets copy the binary into mbr + fs_content(path,0x7000,0x100); // copy 0x100 bytes to 0x7000 - //lets copy the code to the bootsector ! - - uint8_t *dest=0x7000; - for(int i=0;i<0x100;i++) - { - dest[i]=start_sel[i]; + // tell them where to enter (agreed adress at 0x8010) + uint32_t *entry=0x8010; + *entry=smp_main; - } - //bsp (boot processor) enables its local apic uint32_t *reg=pros->local_apic_address+FOOLOS_APIC_SPUR_INT; - *reg=0xffffffff; // all bits 1 and interrupt 255 +// *reg=0xffffffff; // all bits 1 and interrupt 255 for(int i=0;i<pros->processors;i++) { @@ -90,12 +91,20 @@ void smp_start_aps(smp_processors *pros,uint8_t *start_sel) *reg=(5<<8)|(1<<14); // 101 INIT // do we really neet this? + // TODO!! // todo: use some real sleep (not implemented yet :( ) //sleep(30); // start proc 0x7 = 0x7000; etc.. *reg=(6<<8)|(1<<14)|0x7; // 110 SIPI + + //bsp (boot processor) enables its local apic + uint32_t *reg=pros->local_apic_address+FOOLOS_APIC_SPUR_INT; + // *reg=0xffffffff; // all bits 1 and interrupt 255 + + } } + |