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This commit is contained in:
Simon Gardling
2024-09-10 13:03:02 -04:00
parent 53c617d779
commit d66450e427
381 changed files with 28864 additions and 34170 deletions
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192
kern/main/main.c
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@@ -49,8 +49,7 @@
#include <syscall.h>
#include <test.h>
#include <version.h>
#include "autoconf.h" // for pseudoconfig
#include "autoconf.h" // for pseudoconfig
/*
* These two pieces of data are maintained by the makefiles and build system.
@@ -71,92 +70,85 @@ static const char harvard_copyright[] =
"Copyright (c) 2000, 2001-2005, 2008-2011, 2013, 2014\n"
" President and Fellows of Harvard College. All rights reserved.\n";
/*
* Initial boot sequence.
*/
static
void
boot(void)
{
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* mainbus_bootstrap() attaches the console device. This can
* be remarkably confusing if a bug occurs at this point. So
* don't put new code before mainbus_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
static void boot(void) {
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* mainbus_bootstrap() attaches the console device. This can
* be remarkably confusing if a bug occurs at this point. So
* don't put new code before mainbus_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
kprintf("Put-your-group-name-here's system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
kprintf("Put-your-group-name-here's system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
/* Early initialization. */
ram_bootstrap();
proc_bootstrap();
thread_bootstrap();
hardclock_bootstrap();
vfs_bootstrap();
kheap_nextgeneration();
/* Early initialization. */
ram_bootstrap();
proc_bootstrap();
thread_bootstrap();
hardclock_bootstrap();
vfs_bootstrap();
kheap_nextgeneration();
/* Probe and initialize devices. Interrupts should come on. */
kprintf("Device probe...\n");
KASSERT(curthread->t_curspl > 0);
mainbus_bootstrap();
KASSERT(curthread->t_curspl == 0);
/* Now do pseudo-devices. */
pseudoconfig();
kprintf("\n");
kheap_nextgeneration();
/* Probe and initialize devices. Interrupts should come on. */
kprintf("Device probe...\n");
KASSERT(curthread->t_curspl > 0);
mainbus_bootstrap();
KASSERT(curthread->t_curspl == 0);
/* Now do pseudo-devices. */
pseudoconfig();
kprintf("\n");
kheap_nextgeneration();
/* Late phase of initialization. */
vm_bootstrap();
kprintf_bootstrap();
thread_start_cpus();
/* Late phase of initialization. */
vm_bootstrap();
kprintf_bootstrap();
thread_start_cpus();
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
kheap_nextgeneration();
kheap_nextgeneration();
/*
* Make sure various things aren't screwed up.
*/
COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));
/*
* Make sure various things aren't screwed up.
*/
COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));
}
/*
* Shutdown sequence. Opposite to boot().
*/
static
void
shutdown(void)
{
static void shutdown(void) {
kprintf("Shutting down.\n");
kprintf("Shutting down.\n");
vfs_clearbootfs();
vfs_clearcurdir();
vfs_unmountall();
vfs_clearbootfs();
vfs_clearcurdir();
vfs_unmountall();
thread_shutdown();
thread_shutdown();
splhigh();
splhigh();
}
/*****************************************/
@@ -168,49 +160,45 @@ shutdown(void)
* not because this is where system call code should go. Other syscall
* code should probably live in the "syscall" directory.
*/
int
sys_reboot(int code)
{
switch (code) {
case RB_REBOOT:
case RB_HALT:
case RB_POWEROFF:
break;
default:
return EINVAL;
}
int sys_reboot(int code) {
switch (code) {
case RB_REBOOT:
case RB_HALT:
case RB_POWEROFF:
break;
default:
return EINVAL;
}
shutdown();
shutdown();
switch (code) {
case RB_HALT:
kprintf("The system is halted.\n");
mainbus_halt();
break;
case RB_REBOOT:
kprintf("Rebooting...\n");
mainbus_reboot();
break;
case RB_POWEROFF:
kprintf("The system is halted.\n");
mainbus_poweroff();
break;
}
switch (code) {
case RB_HALT:
kprintf("The system is halted.\n");
mainbus_halt();
break;
case RB_REBOOT:
kprintf("Rebooting...\n");
mainbus_reboot();
break;
case RB_POWEROFF:
kprintf("The system is halted.\n");
mainbus_poweroff();
break;
}
panic("reboot operation failed\n");
return 0;
panic("reboot operation failed\n");
return 0;
}
/*
* Kernel main. Boot up, then fork the menu thread; wait for a reboot
* request, and then shut down.
*/
void
kmain(char *arguments)
{
boot();
void kmain(char *arguments) {
boot();
menu(arguments);
menu(arguments);
/* Should not get here */
/* Should not get here */
}