diff options
Diffstat (limited to 'src/northbridge/via/cx700/cx700_vga.c')
| -rw-r--r-- | src/northbridge/via/cx700/cx700_vga.c | 56 |
1 files changed, 48 insertions, 8 deletions
diff --git a/src/northbridge/via/cx700/cx700_vga.c b/src/northbridge/via/cx700/cx700_vga.c index c259b376ad..88fac179f2 100644 --- a/src/northbridge/via/cx700/cx700_vga.c +++ b/src/northbridge/via/cx700/cx700_vga.c @@ -29,6 +29,7 @@ #include <cpu/cpu.h> #include <cpu/x86/mtrr.h> #include <cpu/x86/msr.h> +#include <arch/interrupt.h> #include "chip.h" #include "northbridge.h" @@ -41,9 +42,44 @@ #define CRTC_INDEX 0x3d4 #define CRTC_DATA 0x3d5 -void setup_realmode_idt(void); -void do_vgabios(void); -void vga_enable_console(void); +static int via_cx700_int15_handler(struct eregs *regs) +{ + int res=-1; + printk(BIOS_DEBUG, "via_cx700_int15_handler\n"); + switch(regs->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; + res=0; + break; + case 0x5f00: + regs->eax = 0x8600; + break; + case 0x5f01: + regs->eax = 0x5f; + regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768 + res = 0; + 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 + res=0; + break; + case 0x5f0f: + regs->eax=0x860f; + break; + default: + printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", + regs->eax & 0xffff); + break; + } + return res; +} void write_protect_vgabios(void) { @@ -64,7 +100,7 @@ static void vga_init(device_t dev) { u8 reg8; - printk(BIOS_DEBUG, "Initializing VGA...\n"); + mainboard_interrupt_handlers(0x15, &via_cx700_int15_handler); //* pci_write_config8(dev, 0x04, 0x07); @@ -75,12 +111,16 @@ static void vga_init(device_t dev) pci_write_config8(dev, 0x3c, 0x0b); //*/ - printk(BIOS_DEBUG, "Executing VGA option rom in real mode\n"); - setup_realmode_idt(); - do_vgabios(); + printk(BIOS_DEBUG, "Initializing VGA...\n"); + + pci_dev_init(dev); + printk(BIOS_DEBUG, "Enable VGA console\n"); + // this is how it should look: + // call_bios_interrupt(0x10,0x4f1f,0x8003,1,0); + // this is how it looks: vga_enable_console(); - + /* It's not clear if these need to be programmed before or after * the VGA bios runs. Try both, clean up later */ /* Set memory rate to 200MHz */ |