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Have hammer_time() return the proc0 stack location, and have locore

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switch to it before calling mi_startup().  The bootstack is WAY too small
for running acpica during probe/attach.  While here, pass modulep/physfree
to the startup routine, rather than writing to the global variables in
locore.S.

Approved by:  re (amd64/*)
This commit is contained in:
Peter Wemm 2003-05-31 06:54:29 +00:00
parent 5681a6f60d
commit b043c80645
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=115431
2 changed files with 17 additions and 25 deletions
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10
sys/amd64/amd64/locore.S
View File

@ -69,17 +69,15 @@ NON_GPROF_ENTRY(btext)
/* Find the metadata pointers before we lose them */
movq %rsp, %rbp
xorq %rax, %rax
movl 4(%rbp),%eax /* modulep */
movq %rax,modulep
movl 8(%rbp),%eax /* kernend */
movq %rax,physfree
movl 4(%rbp),%edi /* modulep (arg 1) */
movl 8(%rbp),%esi /* kernend (arg 2) */
/* Get onto a stack that we can trust - there is no going back now. */
movq $bootstack,%rsp
xorq %rbp, %rbp
xorl %ebp, %ebp
call hammer_time /* set up cpu for unix operation */
movq %rax,%rsp /* set up kstack for mi_startup() */
call mi_startup /* autoconfiguration, mountroot etc */
0: hlt
jmp 0b

32
sys/amd64/amd64/machdep.c
View File

@ -112,7 +112,7 @@
#include <sys/ptrace.h>
#include <machine/sigframe.h>
extern void hammer_time(void);
extern u_int64_t hammer_time(u_int64_t, u_int64_t);
extern void dblfault_handler(void);
extern void printcpuinfo(void); /* XXX header file */
@ -131,9 +131,6 @@ SYSINIT(cpu, SI_SUB_CPU, SI_ORDER_FIRST, cpu_startup, NULL)
int _udatasel, _ucodesel, _ucode32sel;
u_long atdevbase;
u_int64_t modulep; /* phys addr of metadata table */
u_int64_t physfree; /* first free page after kernel */
int cold = 1;
long Maxmem = 0;
@ -1070,19 +1067,8 @@ getmemsize(caddr_t kmdp, u_int64_t first)
avail_end = phys_avail[pa_indx];
}
static u_int64_t
allocpages(int n)
{
u_int64_t ret;
ret = physfree;
bzero((void *)ret, n * PAGE_SIZE);
physfree += n * PAGE_SIZE;
return (ret);
}
void
hammer_time(void)
u_int64_t
hammer_time(u_int64_t modulep, u_int64_t physfree)
{
caddr_t kmdp;
int gsel_tss, off, x;
@ -1095,10 +1081,15 @@ hammer_time(void)
msr = rdmsr(MSR_EFER) | EFER_NXE;
wrmsr(MSR_EFER, msr);
proc0.p_uarea = (struct user *)(allocpages(UAREA_PAGES) + KERNBASE);
thread0.td_kstack = allocpages(KSTACK_PAGES) + KERNBASE;
proc0.p_uarea = (struct user *)(physfree + KERNBASE);
bzero(proc0.p_uarea, UAREA_PAGES * PAGE_SIZE);
physfree += UAREA_PAGES * PAGE_SIZE;
thread0.td_kstack = physfree + KERNBASE;
bzero((void *)thread0.td_kstack, KSTACK_PAGES * PAGE_SIZE);
physfree += KSTACK_PAGES * PAGE_SIZE;
thread0.td_pcb = (struct pcb *)
(thread0.td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
atdevbase = ISA_HOLE_START + KERNBASE;
/*
@ -1244,6 +1235,9 @@ hammer_time(void)
env = getenv("kernelname");
if (env != NULL)
strlcpy(kernelname, env, sizeof(kernelname));
/* Location of kernel stack for locore */
return ((u_int64_t)thread0.td_pcb);
}
void