[tkreuzer] 53459: [FREELDR] - fix a bug in x86 PnpBiosGetDeviceNodeCount - enable pxe for amd64 (not yet implemented though) - store boot drive and boot partition in shared memory isnetad of relyin...
26 Aug
2011
26 Aug
'11
8 p.m.
Author: tkreuzer
Date: Fri Aug 26 20:00:17 2011
New Revision: 53459
URL: http://svn.reactos.org/svn/reactos?rev=53459&view=rev
Log:
[FREELDR]
- fix a bug in x86 PnpBiosGetDeviceNodeCount
- enable pxe for amd64 (not yet implemented though)
- store boot drive and boot partition in shared memory isnetad of relying on a register,
which seems to be erased on switch to long mode
64 bit freeldr is back on track!
Modified:
trunk/reactos/boot/freeldr/freeldr/arch/amd64/entry.S
trunk/reactos/boot/freeldr/freeldr/arch/i386/i386pnp.cmake.S
trunk/reactos/boot/freeldr/freeldr/arch/realmode/amd64.S
trunk/reactos/boot/freeldr/freeldr/fs/fs.c
trunk/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h
Modified: trunk/reactos/boot/freeldr/freeldr/arch/amd64/entry.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/amd64/entry.S [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/amd64/entry.S [iso-8859-1] Fri Aug 26 20:00:17
2011
@@ -31,9 +31,10 @@
FrldrStartup:
/* Store BootDrive and BootPartition */
- mov byte ptr [FrldrBootDrive], dl
+ mov al, byte ptr [BSS_BootDrive]
+ mov byte ptr [FrldrBootDrive], al
xor eax, eax
- mov al, dh
+ mov al, byte ptr [BSS_BootPartition]
mov dword ptr [FrldrBootPartition], eax
/* Patch long jump with real mode entry point */
Modified: trunk/reactos/boot/freeldr/freeldr/arch/i386/i386pnp.cmake.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/i386/i386pnp.cmake.S [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/i386/i386pnp.cmake.S [iso-8859-1] Fri Aug 26
20:00:17 2011
@@ -120,7 +120,7 @@
mov esi, [ebp + 12]
mov ax, [BSS_PnpNodeCount]
movzx ecx, ax
- mov [esi], eax
+ mov [esi], ecx
pop es
popa
@@ -140,7 +140,6 @@
*/
PUBLIC _PnpBiosGetDeviceNode
_PnpBiosGetDeviceNode:
- .code32
push ebp
mov ebp, esp
Modified: trunk/reactos/boot/freeldr/freeldr/arch/realmode/amd64.S
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/arch/…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/arch/realmode/amd64.S [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/arch/realmode/amd64.S [iso-8859-1] Fri Aug 26
20:00:17 2011
@@ -24,6 +24,10 @@
mov fs, ax
mov gs, ax
mov ss, ax
+
+ /* Save the boot drive and partition */
+ mov byte ptr ds:[BSS_BootDrive], dl
+ mov byte ptr ds:[BSS_BootPartition], dh
/* Setup a real mode stack */
mov sp, word ptr ds:[stack16]
@@ -118,6 +122,7 @@
CheckFor64BitSupport:
/* Check if CPU supports CPUID */
+ pushad
pushfd
pop eax
mov ebx, eax
@@ -131,6 +136,7 @@
mov si, offset .Msg_NoCpuidSupport
call writestr
+ popad
xor al, al
ret
@@ -147,6 +153,7 @@
mov si, offset .Msg_NoPAE
call writestr
+ popad
xor al, al
ret
@@ -163,6 +170,7 @@
mov si, offset .Msg_NoLongMode
call writestr
+ popad
xor al, al
ret
@@ -170,6 +178,7 @@
.ascii "Long mode is not supported.", CR, LF, NUL
.Success:
+ popad
xor al, al
inc al
ret
@@ -291,8 +300,8 @@
mov cr4, eax
/* Point cr3 at the PML4 */
- mov edx, PML4_ADDRESS
- mov cr3, edx
+ mov eax, PML4_ADDRESS
+ mov cr3, eax
/* Enable long mode */
mov ecx, MSR_EFER
@@ -302,9 +311,9 @@
/* Activate long mode by enabling paging and protection simultaneously,
skipping protected mode entirely */
- mov ebx, cr0
- or ebx, HEX(80000001)
- mov cr0, ebx
+ mov eax, cr0
+ or eax, HEX(80000001)
+ mov cr0, eax
/* Clear prefetch queue & correct CS */
ljmp16 LMODE_CS, InLongMode
Modified: trunk/reactos/boot/freeldr/freeldr/fs/fs.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/fs/fs…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/fs/fs.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/fs/fs.c [iso-8859-1] Fri Aug 26 20:00:17 2011
@@ -339,7 +339,7 @@
if (!FileData[DeviceId].FileFuncTable)
FileData[DeviceId].FileFuncTable = Ext2Mount(DeviceId);
#endif
-#ifdef _M_IX86
+#if defined(_M_IX86) || defined(_M_AMD64)
if (!FileData[DeviceId].FileFuncTable)
FileData[DeviceId].FileFuncTable = PxeMount(DeviceId);
#endif
Modified: trunk/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/inclu…
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h [iso-8859-1]
(original)
+++ trunk/reactos/boot/freeldr/freeldr/include/arch/pc/x86common.h [iso-8859-1] Fri Aug 26
20:00:17 2011
@@ -56,6 +56,8 @@
#define BSS_PnpNodeCount (BSS_START + 96)
#define BSS_PnpNodeNumber (BSS_START + 100)
#define BSS_PnpResult (BSS_START + 104)
+#define BSS_BootDrive (BSS_START + 108) // 1 byte
+#define BSS_BootPartition (BSS_START + 109) // 1 byte
/* Realmode function IDs */
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