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authorPatrick Georgi <patrick.georgi@secunet.com>2012-11-22 12:46:12 +0100
committerStefan Reinauer <stefan.reinauer@coreboot.org>2012-11-24 20:11:46 +0100
commit199b09cb7a3c590ccbf8d705c98cfde101378f20 (patch)
tree058511a1a638aa892c836a584633e155aaf0ebe6 /src/northbridge/via/cn400
parent503af721a1f2c831fb360d1c1b2af38e0866fc35 (diff)
x86 realmode: Use x86emu register file + defines
By using the (global) register file as defined by x86emu, we can use the same register access for YABEL and realmode interrupt handlers. - the x86 realmode interrupt handlers changed in signature - to access registers, use X86_$REGNAME now (eg. X86_EAX) - x86_exception_handler still uses struct eregs *regs to avoid spilling the x86emu register file stuff everywhere Coccinelle script that handled most of this commit: @ inthandler @ identifier FUNC, regs; @@ int FUNC( -struct eregs *regs +void ) { ... } @ depends on inthandler @ identifier regs; @@ -regs->eax +X86_EAX @ depends on inthandler @ identifier regs; @@ -regs->ebx +X86_EBX @ depends on inthandler @ identifier regs; @@ -regs->ecx +X86_ECX @ depends on inthandler @ identifier regs; @@ -regs->edx +X86_EDX @ depends on inthandler @ identifier regs; @@ -regs->esi +X86_ESI @ depends on inthandler @ identifier regs; @@ -regs->edi +X86_EDI @ depends on inthandler @ identifier regs; @@ -regs->eflags +X86_EFLAGS @ depends on inthandler @ identifier regs; @@ -regs->vector +M.x86.intno Change-Id: I60cc2c36646fe4b7f97457b1e297e3df086daa36 Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/1891 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/northbridge/via/cn400')
-rw-r--r--src/northbridge/via/cn400/vga.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/src/northbridge/via/cn400/vga.c b/src/northbridge/via/cn400/vga.c
index fa598aa8fa..d8c921af89 100644
--- a/src/northbridge/via/cn400/vga.c
+++ b/src/northbridge/via/cn400/vga.c
@@ -36,41 +36,42 @@
#include <arch/interrupt.h>
#include "northbridge.h"
#include "cn400.h"
+#include <x86emu/regs.h>
-static int via_cn400_int15_handler(struct eregs *regs)
+static int via_cn400_int15_handler(void)
{
int res=0;
printk(BIOS_DEBUG, "via_cn400_int15_handler\n");
- switch(regs->eax & 0xffff) {
+ switch(X86_EAX & 0xffff) {
case 0x5f19:
break;
case 0x5f18:
- regs->eax=0x5f;
- regs->ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory
- regs->ecx=0x060;
+ X86_EAX=0x5f;
+ X86_EBX=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory
+ X86_ECX=0x060;
res=1;
break;
case 0x5f00:
- regs->eax = 0x8600;
+ X86_EAX = 0x8600;
break;
case 0x5f01:
- regs->eax = 0x5f;
- regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768
+ X86_EAX = 0x5f;
+ X86_ECX = (X86_ECX & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768
res = 1;
break;
case 0x5f02:
- regs->eax=0x5f;
- regs->ebx= (regs->ebx & 0xffff0000) | 2;
- regs->ecx= (regs->ecx & 0xffff0000) | 0x401; // PAL + crt only
- regs->edx= (regs->edx & 0xffff0000) | 0; // TV Layout - default
+ X86_EAX=0x5f;
+ X86_EBX= (X86_EBX & 0xffff0000) | 2;
+ X86_ECX= (X86_ECX & 0xffff0000) | 0x401; // PAL + crt only
+ X86_EDX= (X86_EDX & 0xffff0000) | 0; // TV Layout - default
res=1;
break;
case 0x5f0f:
- regs->eax=0x860f;
+ X86_EAX=0x860f;
break;
default:
printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",
- regs->eax & 0xffff);
+ X86_EAX & 0xffff);
break;
}
return res;