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Fixes since we now need to know the interrupt type of every single

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one. sigh.
This commit is contained in:
Ronald G. Minnich 2002-04-08 02:53:47 +00:00
commit 5a86682eec
2 changed files with 28 additions and 34 deletions
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58
src/arch/i386/lib/idt.c
View file

@ -28,25 +28,13 @@ void handler(void) {
__asm__ __volatile__ (
".code16\n"
"idthandle:\n"
" pushal\n"
" movl $0xff, %eax\n"
" jmp 1f\n"
"idthandle10:\n"
" pushal\n"
" movl $0x10, %eax\n"
" jmp 1f\n"
"idthandle42:\n"
" pushal\n"
" movl $0x42, %eax\n"
" jmp 1f\n"
"idthandle1a: \n"
" pushal\n"
" movl $0x1a, %eax\n"
"1: outb %al, $0x80\n"
" pushal\n"
" movb $0, %al\n"
" ljmp $0, $callbiosint16\n"
"end_idthandle:\n"
".code32\n"
);
}
// Calling conventions. The first C function is called with this stuff
@ -59,6 +47,12 @@ void callbiosint(void) {
__asm__ __volatile__ (
".code16\n"
"callbiosint16:\n"
// clean up the int #. To save space we put it in the lower
// byte. But the top 24 bits are junk.
"andl $0xffffff00, %eax\n"
// this push does two things:
// - put the INT # on the stack as a parameter
// - provides us with a temp for the %cr0 mods.
"pushl %eax\n"
"movl %cr0, %eax\n"
//"andl $0x7FFAFFD1, %eax\n" /* PG,AM,WP,NE,TS,EM,MP = 0 */
@ -179,31 +173,31 @@ biosint(
return ret;
}
void
setup_realmode_idt(void) {
extern unsigned char idthandle, end_idthandle;
extern unsigned char idthandle10, idthandle1a;
extern unsigned char idthandle42;
int i;
struct realidt *idts = (struct realidt *) 0;
int codesize = &end_idthandle - &idthandle;
unsigned char *intbyte, *codeptr;
// for each int, we create a customized little handler
// that just pushes %ax, puts the int # in %al,
// then calls the common interrupt handler.
// this necessitated because intel didn't know much about
// architecture when they did the 8086 (it shows)
// (hmm do they know anymore even now :-)
// obviously you can see I don't really care about memory
// efficiency. If I did I would probe back through the stack
// and get it that way. But that's really disgusting.
for (i = 0; i < 256; i++) {
idts[i].cs = 0;
idts[i].offset = 1024;
codeptr = 1024 + i * codesize;
idts[i].offset = codeptr;
memcpy((void *) codeptr, &idthandle, codesize);
intbyte = codeptr + 3;
*intbyte = i;
}
// now adjust for int 0x10 and int 0x1a
idts[0x10].offset += &idthandle10 - &idthandle;
printk_debug("idts[0x10].offset is now 0x%x\n",
idts[0x10].offset);
idts[0x1a].offset += &idthandle1a - &idthandle;
printk_debug("idts[0x1a].offset is now 0x%x\n",
idts[0x1a].offset);
idts[0x42].offset += &idthandle42 - &idthandle;
printk_debug("idts[0x42].offset is now 0x%x\n",
idts[0x42].offset);
memcpy((void *) 1024, &idthandle, &end_idthandle - &idthandle);
}

2
util/scanspd/spd_82801.c
View file

@ -35,7 +35,7 @@ int smbus_devfn;
#define SMBUS_PIN_CTL 0xf
/* Define register settings */
#define HOST_RESET 0xfe
#define HOST_RESET 0xff
#define DIMM_BASE 0xa0 // 1010000 is base for DIMM in SMBus
#define READ_CMD 0x01 // 1 in the 0 bit of SMBHSTADD states to READ