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This commit is contained in:
Jorrit Herder
2005-04-29 15:36:43 +00:00
parent 0e869cdd44
commit 89ac678b9b
78 changed files with 1293 additions and 2858 deletions
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79
kernel/main.c
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@@ -14,7 +14,6 @@
* Changes:
* Nov 24, 2004 simplified main() with system image (Jorrit N. Herder)
* Oct 21, 2004 moved copyright to announce() (Jorrit N. Herder)
* Sep 30, 2004 moved mem_init() to this file (Jorrit N. Herder)
* Sep 04, 2004 created stop_sequence() to cleanup (Jorrit N. Herder)
* Aug 20, 2004 split wreboot() and shutdown() (Jorrit N. Herder)
* Jun 15, 2004 moved wreboot() to this file (Jorrit N. Herder)
@@ -42,8 +41,8 @@ PUBLIC void main()
register struct proc *rp;
register int i;
int hdrindex; /* index to array of a.out headers */
phys_clicks text_base;
vir_clicks text_clicks;
phys_clicks text_base, bootdev_base;
vir_clicks text_clicks, bootdev_clicks;
vir_clicks data_clicks;
reg_t ktsb; /* kernel task stack base */
struct memory *memp;
@@ -53,9 +52,6 @@ PUBLIC void main()
/* Initialize the interrupt controller. */
intr_init(1);
/* Make free memory list from memory sizes passed by boot monitor. */
mem_init();
/* Clear the process table. Anounce each slot as empty and
* set up mappings for proc_addr() and proc_number() macros.
*/
@@ -90,7 +86,7 @@ PUBLIC void main()
}
ktsb += ttp->stksize; /* point to high end of stack */
rp->p_reg.sp = ktsb; /* this task's initial stack ptr */
text_base = code_base >> CLICK_SHIFT;
text_base = kinfo.code_base >> CLICK_SHIFT;
/* processes that are in the kernel */
hdrindex = 0; /* all use the first a.out header */
} else {
@@ -150,44 +146,37 @@ PUBLIC void main()
/* Code and data segments must be allocated in protected mode. */
alloc_segments(rp);
}
bill_ptr = proc_addr(IDLE); /* it has to point somewhere */
/* This actually is not needed, because ready() already set 'proc_ptr' to
* first task that was announced ready.
*/
lock_pick_proc();
/* Expect an image of the root FS to be loaded into memory as well. The
* root FS image is located directly after the programs.
#if ENABLE_BOOTDEV
/* Expect an image of the boot device to be loaded into memory as well.
* The boot device is the last module that is loaded into memory, and,
* for example, can contain the root FS (useful for embedded systems).
*/
hdrindex ++;
phys_copy(aout+hdrindex * A_MINHDR, vir2phys(&e_hdr), (phys_bytes) A_MINHDR);
kprintf("Root FS image found: %s\n", (e_hdr.a_flags&A_IMG)? "yes" : "no");
phys_copy(aout + hdrindex * A_MINHDR,vir2phys(&e_hdr),(phys_bytes) A_MINHDR);
if (e_hdr.a_flags & A_IMG) {
kprintf("Size of root FS: %u, ", e_hdr.a_data);
kprintf("base : %u, ", e_hdr.a_syms);
kprintf("header size : %u, ", e_hdr.a_hdrlen);
rp = proc_addr(MEMORY);
rp->p_farmem[0].mem_phys = e_hdr.a_syms;
rp->p_farmem[0].mem_len = e_hdr.a_data;
kinfo.bootdev_base = e_hdr.a_syms;
kinfo.bootdev_size = e_hdr.a_data;
/* Remove from free list, to prevent being overwritten. */
text_base = e_hdr.a_syms >> CLICK_SHIFT;
text_clicks = (e_hdr.a_text + CLICK_SIZE-1) >> CLICK_SHIFT;
if (!(e_hdr.a_flags & A_SEP)) text_clicks = 0; /* Common I&D */
data_clicks = (e_hdr.a_total + CLICK_SIZE-1) >> CLICK_SHIFT;
bootdev_base = e_hdr.a_syms >> CLICK_SHIFT;
bootdev_clicks = (e_hdr.a_total + CLICK_SIZE-1) >> CLICK_SHIFT;
for (memp = mem; memp < &mem[NR_MEMS]; memp++) {
if (memp->base == text_base) {
kprintf("Memory removed from free list.\n", NO_ARG);
memp->base += text_clicks + data_clicks;
memp->size -= text_clicks + data_clicks;
if (memp->base == bootdev_base) {
memp->base += bootdev_clicks;
memp->size -= bootdev_clicks;
}
}
}
#endif
/* MINIX and all system services have been loaded. Announce to the user.
* Then go to the assembly code to start running the current process.
/* This actually is not needed, because ready() already set 'proc_ptr.' */
lock_pick_proc();
bill_ptr = proc_addr(IDLE); /* it has to point somewhere */
/* MINIX is now ready. Display the startup banner to the user and return
* to the assembly code to start running the current process.
*/
announce();
restart();
@@ -201,14 +190,18 @@ PUBLIC void main()
PRIVATE void announce(void)
{
/* Display the MINIX startup banner. */
kprintf("MINIX %s Copyright 2001 Prentice-Hall, Inc.\n",
karg(OS_RELEASE "." OS_VERSION));
kprintf("MINIX %s. Copyright 2001 Prentice-Hall, Inc.\n",
karg(kinfo.version));
#if (CHIP == INTEL)
/* Real mode, or 16/32-bit protected mode? */
kprintf("Executing in %s mode\n\n",
protected_mode ? karg("32-bit protected") : karg("real"));
machine.protected ? karg("32-bit protected") : karg("real"));
#endif
/* Check if boot device was loaded with the kernel. */
if (kinfo.bootdev_base > 0)
kprintf("Image of /dev/boot loaded. Size: %u KB.\n", kinfo.bootdev_size);
}
@@ -274,7 +267,7 @@ timer_t *tp;
/* See if the last process' shutdown was successfull. Else, force exit. */
if (p != NIL_PROC) {
kprintf("[%s]\n", isalivep(p) ? "FAILED" : "OK");
kprintf("[%s]\n", isalivep(p) ? karg("FAILED") : karg("OK"));
if (isalivep(p))
clear_proc(p->p_nr); /* now force process to exit */
}
@@ -289,8 +282,8 @@ timer_t *tp;
if (p == NIL_PROC) p = BEG_PROC_ADDR;
while (TRUE) {
if (isalivep(p) && p->p_type == level) { /* found a process */
kprintf("- Stopping %s ", p->p_name);
kprintf("%s ... ", types[p->p_type]);
kprintf("- Stopping %s ", karg(p->p_name));
kprintf("%s ... ", karg(types[p->p_type]));
shutdown_process = p; /* directly continue if exited */
notify(proc_number(p), HARD_STOP);
set_timer(tp, get_uptime()+STOP_TICKS, stop_sequence);
@@ -336,15 +329,15 @@ timer_t *tp;
* For RBT_MONITOR, the MM has provided the program.
*/
if (how == RBT_HALT) {
phys_copy(vir2phys(" "), mon_params, 2);
phys_copy(vir2phys("delay;"), kinfo.params_base, 7);
} else if (how == RBT_REBOOT) {
phys_copy(vir2phys("delay;boot"), mon_params, 11);
phys_copy(vir2phys("delay;boot"), kinfo.params_base, 11);
}
level0(monitor);
}
/* Stop BIOS memory test. */
phys_copy(vir2phys(&magic), (phys_bytes) ADR_MEM_CHECK, LEN_MEM_CHECK);
phys_copy(vir2phys(&magic), SOFT_RESET_FLAG_ADDR, SOFT_RESET_FLAG_SIZE);
/* Reset the system by jumping to the reset address (real mode), or by
* forcing a processor shutdown (protected mode).