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authorLi-Ta Lo <ollie@lanl.gov>2004-07-08 17:18:27 +0000
committerLi-Ta Lo <ollie@lanl.gov>2004-07-08 17:18:27 +0000
commit815212652994a43d3e05dc864343b722b70a129d (patch)
treec4f0d5c97b4c175f40889e126b816a5d7036151d /util/vgabios/int1a.c
parent4c5060dc2bf8f944c54361f7913d20d02fff65a0 (diff)
added testbios for V2
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1624 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'util/vgabios/int1a.c')
-rw-r--r--util/vgabios/int1a.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/util/vgabios/int1a.c b/util/vgabios/int1a.c
new file mode 100644
index 0000000000..48aa13e9a1
--- /dev/null
+++ b/util/vgabios/int1a.c
@@ -0,0 +1,172 @@
+#include <stdio.h>
+#include "test.h"
+#include "pci-userspace.h"
+
+#define DEBUG_INT1A
+
+#define SUCCESSFUL 0x00
+#define DEVICE_NOT_FOUND 0x86
+#define BAD_REGISTER_NUMBER 0x87
+
+void x86emu_dump_xregs(void);
+extern int verbose;
+
+
+int int1A_handler()
+{
+ PCITAG tag;
+ pciVideoPtr pvp = NULL;
+
+ if (verbose) {
+ printf("\nint1a encountered.\n");
+ x86emu_dump_xregs();
+ }
+
+ switch (X86_AX) {
+ case 0xb101:
+ X86_EAX = 0x00; /* no config space/special cycle support */
+ X86_AL = 0x01; /* config mechanism 1 */
+ X86_EDX = 0x20494350; /* " ICP" */
+ X86_EBX = 0x0210; /* Version 2.10 */
+ X86_ECX &= 0xFF00;
+ X86_ECX |= (pciNumBuses & 0xFF); /* Max bus number in system */
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+#ifdef DEBUG_INT1A
+ if (verbose)
+ printf("PCI bios present.\n");
+#endif
+ return 1;
+ case 0xb102:
+ if (X86_DX == pvp->vendor_id && X86_CX == pvp->device_id && X86_ESI == 0) {
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ X86_EBX = pciSlotBX(pvp);
+ }
+#ifdef SHOW_ALL_DEVICES
+ else if ((pvp = xf86FindPciDeviceVendor(X86_EDX, X86_ECX, X86_ESI, pvp))) {
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ X86_EBX = pciSlotBX(pvp);
+ }
+#endif
+ else {
+ X86_EAX = X86_AL | (DEVICE_NOT_FOUND << 8);
+ X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
+ }
+#ifdef DEBUG_INT1A
+ printf("eax=0x%x ebx=0x%x eflags=0x%x\n", X86_EAX, X86_EBX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb103:
+#if 0
+ if (X86_CL == pvp->interface &&
+ X86_CH == pvp->subclass &&
+ ((X86_ECX & 0xFFFF0000) >> 16) == pvp->class) {
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EBX = pciSlotBX(pvp);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ }
+#else
+ /* FIXME: dirty hack */
+ if (0);
+#endif
+#ifdef SHOW_ALL_DEVICES
+ else if ((pvp = FindPciClass(X86_CL, X86_CH,
+ (X86_ECX & 0xffff0000) >> 16,
+ X86_ESI, pvp))) {
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ X86_EBX = pciSlotBX(pvp);
+ }
+#endif
+ else {
+ X86_EAX = X86_AL | (DEVICE_NOT_FOUND << 8);
+ X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
+ }
+#ifdef DEBUG_INT1A
+ printf("eax=0x%x eflags=0x%x\n", X86_EAX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb108:
+ if ((tag = findPci(X86_EBX))) {
+ X86_CL = pciReadByte(tag, X86_EDI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
+ }
+#ifdef DEBUG_INT1A
+ printf("eax=0x%x ecx=0x%x eflags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb109:
+ if ((tag = findPci(X86_EBX))) {
+ X86_CX = pciReadWord(tag, X86_EDI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
+ }
+#ifdef DEBUG_INT1A
+ printf("eax=0x%x ecx=0x%x eflags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb10a:
+ if ((tag = findPci(X86_EBX))) {
+ X86_ECX = pciReadLong(tag, X86_EDI);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
+ }
+#ifdef DEBUG_INT1A
+ printf("eax=0x%x ecx=0x%x eflags=0x%x\n", X86_EAX, X86_ECX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb10b:
+ if ((tag = findPci(X86_EBX))) {
+ pciWriteByte(tag, X86_EDI, X86_CL);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
+ }
+#ifdef DEBUG_INT1A
+ printf("eax=0x%x eflags=0x%x\n", X86_EAX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb10c:
+ if ((tag = findPci(X86_EBX))) {
+ pciWriteWord(tag, X86_EDI, X86_CX);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
+ }
+#ifdef DEBUG_INT1A
+ printf("eax=0x%x eflags=0x%x\n", X86_EAX, X86_EFLAGS);
+#endif
+ return 1;
+ case 0xb10d:
+ if ((tag = findPci(X86_EBX))) {
+ pciWriteLong(tag, X86_EDI, X86_ECX);
+ X86_EAX = X86_AL | (SUCCESSFUL << 8);
+ X86_EFLAGS &= ~((unsigned long) 0x01); /* clear carry flag */
+ } else {
+ X86_EAX = X86_AL | (BAD_REGISTER_NUMBER << 8);
+ X86_EFLAGS |= ((unsigned long) 0x01); /* set carry flag */
+ }
+#ifdef DEBUG_INT1A
+ printf("eax=0x%x eflags=0x%x\n", X86_EAX, X86_EFLAGS);
+#endif
+ return 1;
+ default:
+ printf("int1a: subfunction not implemented.\n");
+ return 0;
+ }
+}