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[init] new init hook system

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Allows code anywhere in the system to define an init hook which is
called at the run level specified.
Hooks are guaranteed to be called in order of init level. Within an init
level the order of the hooks is not guaranteed.
This commit is contained in:
Travis Geiselbrecht
2013-08-02 13:00:11 -07:00
parent c818726b77
commit a40b543556
5 changed files with 191 additions and 19 deletions
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33
top/main.c
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@@ -33,10 +33,8 @@
#include <platform.h>
#include <target.h>
#include <lib/heap.h>
#include <lib/dpc.h>
#include <lib/fs.h>
#include <lib/bio.h>
#include <kernel/thread.h>
#include <lk/init.h>
extern void *__ctor_list;
extern void *__ctor_end;
@@ -72,12 +70,15 @@ void lk_main(void)
thread_init_early();
// early arch stuff
lk_init_level(LK_INIT_LEVEL_ARCH_EARLY - 1);
arch_early_init();
// do any super early platform initialization
lk_init_level(LK_INIT_LEVEL_PLATFORM_EARLY - 1);
platform_early_init();
// do any super early target initialization
lk_init_level(LK_INIT_LEVEL_TARGET_EARLY - 1);
target_early_init();
dprintf(INFO, "welcome to lk\n\n");
@@ -88,11 +89,15 @@ void lk_main(void)
// bring up the kernel heap
dprintf(SPEW, "initializing heap\n");
lk_init_level(LK_INIT_LEVEL_HEAP - 1);
heap_init();
// initialize the kernel
lk_init_level(LK_INIT_LEVEL_KERNEL - 1);
kernel_init();
lk_init_level(LK_INIT_LEVEL_THREADING - 1);
// create a thread to complete system initialization
dprintf(SPEW, "creating bootstrap completion thread\n");
thread_t *t = thread_create("bootstrap2", &bootstrap2, NULL, DEFAULT_PRIORITY, DEFAULT_STACK_SIZE);
@@ -103,39 +108,29 @@ void lk_main(void)
thread_become_idle();
}
int main(void);
static int bootstrap2(void *arg)
{
dprintf(SPEW, "top of bootstrap2()\n");
lk_init_level(LK_INIT_LEVEL_ARCH - 1);
arch_init();
// initialize the dpc system
#if WITH_LIB_DPC
dpc_init();
#endif
// XXX put this somewhere else
#if WITH_LIB_BIO
bio_init();
#endif
#if WITH_LIB_FS
fs_init();
#endif
// initialize the rest of the platform
dprintf(SPEW, "initializing platform\n");
lk_init_level(LK_INIT_LEVEL_PLATFORM - 1);
platform_init();
// initialize the target
dprintf(SPEW, "initializing target\n");
lk_init_level(LK_INIT_LEVEL_TARGET - 1);
target_init();
dprintf(SPEW, "calling apps_init()\n");
lk_init_level(LK_INIT_LEVEL_APPS - 1);
apps_init();
lk_init_level(LK_INIT_LEVEL_LAST);
return 0;
}