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/SPARTAN/trunk/src/main/kinit.c
0,0 → 1,148
/*
* Copyright (C) 2001-2004 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
 
#include <config.h>
#include <arch.h>
#include <main/kinit.h>
#include <main/uinit.h>
#include <proc/scheduler.h>
#include <proc/task.h>
#include <proc/thread.h>
#include <panic.h>
#include <func.h>
#include <cpu.h>
#include <arch/asm.h>
#include <mm/page.h>
#include <arch/mm/page.h>
#include <mm/vm.h>
 
#ifdef __SMP__
#include <arch/mp.h>
#endif /* __SMP__ */
 
#include <synch/waitq.h>
#include <synch/spinlock.h>
 
#ifdef __TEST__
#include <test.h>
#endif /* __TEST__ */
 
void kinit(void *arg)
{
vm_t *m;
vm_area_t *a;
task_t *u;
thread_t *t;
int i;
 
cpu_priority_high();
 
#ifdef __SMP__
if (config.cpu_count > 1) {
/*
* Create the kmp thread and wait for its completion.
* cpu1 through cpuN-1 will come up consecutively and
* not mess together with kcpulb and klwtm threads.
* Just a beautification.
*/
if (t = thread_create(kmp, NULL, the->task, 0)) {
spinlock_lock(&t->lock);
t->flags |= X_WIRED;
t->cpu = &cpus[0];
spinlock_unlock(&t->lock);
thread_ready(t);
waitq_sleep(&kmp_completion_wq);
cpu_priority_high();
}
else panic("thread_create/kmp");
}
#endif /* __SMP__ */
/*
* Now that all CPUs are up, we can report what we've found.
*/
for (i = 0; i < config.cpu_count; i++)
cpu_print_report(&cpus[i]);
 
#ifdef __SMP__
if (config.cpu_count > 1) {
/*
* For each CPU, create its load balancing thread.
*/
for (i = 0; i < config.cpu_count; i++) {
 
if (t = thread_create(kcpulb, NULL, the->task, 0)) {
spinlock_lock(&t->lock);
t->flags |= X_WIRED;
t->cpu = &cpus[i];
spinlock_unlock(&t->lock);
thread_ready(t);
}
else panic("thread_create/kcpulb");
 
}
}
#endif /* __SMP__ */
 
cpu_priority_low();
 
/*
* Create the first user task.
*/
m = vm_create();
if (!m) panic(PANIC "vm_create");
u = task_create(m);
if (!u) panic(PANIC "task_create");
t = thread_create(uinit, NULL, u, THREAD_USER_STACK);
if (!t) panic(PANIC "thread_create");
 
/*
* Create the text vm_area and copy the userspace code there.
*/
a = vm_area_create(m, VMA_TEXT, 1, UTEXT_ADDRESS);
if (!a) panic(PANIC "vm_area_create: vm_text");
memcopy((__address) utext, PA2KA(a->mapping[0]), utext_size < PAGE_SIZE ? utext_size : PAGE_SIZE);
 
/*
* Create the data vm_area.
*/
a = vm_area_create(m, VMA_STACK, 1, USTACK_ADDRESS);
if (!a) panic(PANIC "vm_area_create: vm_stack");
thread_ready(t);
 
#ifdef __TEST__
test();
#endif /* __TEST__ */
 
 
while (1) {
thread_usleep(1000000);
printf("kinit... ");
}
 
}
/SPARTAN/trunk/src/main/main.c
0,0 → 1,202
/*
* Copyright (C) 2001-2004 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
 
#include <arch/asm.h>
#include <arch/context.h>
#include <print.h>
#include <config.h>
#include <time/clock.h>
#include <proc/scheduler.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <mm/vm.h>
#include <main/kinit.h>
#include <cpu.h>
#include <mm/heap.h>
 
#ifdef __SMP__
#include <arch/apic.h>
#include <arch/mp.h>
#endif /* __SMP__ */
 
#include <mm/frame.h>
#include <mm/page.h>
#include <synch/waitq.h>
 
#include <arch.h>
 
char *project = "SPARTAN kernel";
char *copyright = "Copyright (C) 2001-2005 Jakub Jermar";
 
config_t config;
context_t ctx;
 
/*
* These 'hardcoded' variables will be intialised by
* the linker with appropriate sizes and addresses.
*/
__u32 hardcoded_load_address = 0;
__u32 hardcoded_ktext_size = 0;
__u32 hardcoded_kdata_size = 0;
 
void main_bsp(void);
void main_ap(void);
 
/*
* These two functions prevent stack from underflowing during the
* kernel boot phase when SP is set to the very top of the reserved
* space. The stack could get corrupted by a fooled compiler-generated
* pop sequence otherwise.
*/
static void main_bsp_separated_stack(void);
static void main_ap_separated_stack(void);
 
/*
* Executed by the bootstrap processor. cpu_priority_high()'d
*/
void main_bsp(void)
{
config.cpu_count = 1;
config.cpu_active = 1;
 
config.base = hardcoded_load_address;
config.memory_size = CONFIG_MEMORY_SIZE;
config.kernel_size = hardcoded_ktext_size + hardcoded_kdata_size + CONFIG_HEAP_SIZE + CONFIG_STACK_SIZE;
 
context_save(&ctx);
ctx.sp = config.base + config.kernel_size - 8;
ctx.pc = (__address) main_bsp_separated_stack;
context_restore(&ctx);
/* not reached */
}
 
void main_bsp_separated_stack(void) {
vm_t *m;
task_t *k;
thread_t *t;
 
arch_init();
 
printf("%s, %s\n", project, copyright);
 
printf("%L: hardcoded_ktext_size=%dK, hardcoded_kdata_size=%dK\n",
config.base, hardcoded_ktext_size/1024, hardcoded_kdata_size/1024);
 
heap_init(config.base + hardcoded_ktext_size + hardcoded_kdata_size, CONFIG_HEAP_SIZE);
frame_init();
page_init();
 
#ifdef __SMP__
mp_init(); /* Multiprocessor */
#endif /* __SMP__ */
 
cpu_init();
calibrate_delay_loop();
 
timeout_init();
scheduler_init();
task_init();
thread_init();
 
/*
* Create kernel vm mapping.
*/
m = vm_create();
if (!m) panic("can't create kernel vm address space\n");
 
/*
* Create kernel task.
*/
k = task_create(m);
if (!k) panic("can't create kernel task\n");
 
/*
* Create the first thread.
*/
t = thread_create(kinit, NULL, k, 0);
if (!t) panic("can't create kinit thread\n");
 
thread_ready(t);
 
/*
* This call to scheduler() will return to kinit,
* starting the thread of kernel threads.
*/
scheduler();
/* not reached */
}
 
#ifdef __SMP__
/*
* Executed by application processors. cpu_priority_high()'d
* Temporary stack is at ctx.sp which was set during BP boot.
*/
void main_ap(void)
{
/*
* Incrementing the active CPU counter will guarantee that the
* pm_init() will not attempt to build GDT and IDT tables again.
* Neither frame_init() will do the complete thing. Neither cpu_init()
* will do.
*/
config.cpu_active++;
 
arch_init();
frame_init();
page_init();
 
cpu_init();
calibrate_delay_loop();
 
l_apic_init();
l_apic_debug();
 
 
/*
* If we woke kmp up before we left the kernel stack, we could
* collide with another CPU coming up. To prevent this, we
* switch to this cpu's private stack prior to waking kmp up.
*/
the->cpu->saved_context.sp = (__address) &the->cpu->stack[CPU_STACK_SIZE-8];
the->cpu->saved_context.pc = (__address) main_ap_separated_stack;
context_restore(&the->cpu->saved_context);
/* not reached */
}
 
void main_ap_separated_stack(void)
{
/*
* Configure timeouts for this cpu.
*/
timeout_init();
 
waitq_wakeup(&ap_completion_wq, WAKEUP_FIRST);
scheduler();
/* not reached */
}
#endif /* __SMP__*/
/SPARTAN/trunk/src/main/uinit.c
0,0 → 1,38
/*
* Copyright (C) 2005 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
 
#include <main/uinit.h>
#include <arch/types.h>
#include <proc/thread.h>
#include <userspace.h>
 
void uinit(void *arg)
{
printf("USER task, uinit thread: kernel mode\n");
userspace();
}