diff options
Diffstat (limited to 'src/northbridge/via/vx800/vga.c')
| -rw-r--r-- | src/northbridge/via/vx800/vga.c | 129 |
1 files changed, 98 insertions, 31 deletions
diff --git a/src/northbridge/via/vx800/vga.c b/src/northbridge/via/vx800/vga.c index ee010a0c8b..3897e010b5 100644 --- a/src/northbridge/via/vx800/vga.c +++ b/src/northbridge/via/vx800/vga.c @@ -32,9 +32,9 @@ #include <cpu/cpu.h> #include <cpu/x86/mtrr.h> #include <cpu/x86/msr.h> +#include <arch/interrupt.h> #include "chip.h" #include "northbridge.h" -#include "vgachip.h" /* PCI Domain 1 Device 0 Function 0 */ @@ -49,6 +49,83 @@ #define VIACONFIG_VGA_PCI_10 0xf8000008 #define VIACONFIG_VGA_PCI_14 0xfc000000 +static int via_vx800_int15_handler(struct eregs *regs) +{ + int res=-1; + printk(BIOS_DEBUG, "via_vx800_int15_handler\n"); + switch(regs->eax & 0xffff) { + case 0x5f19: + regs->eax=0x5f; + regs->ecx=0x03; + res=0; + break; + case 0x5f18: + { + /* + * BL Bit[7:4] + * Memory Data Rate + * 0000: 66MHz + * 0001: 100MHz + * 0010: 133MHz + * 0011: 200MHz ( DDR200 ) + * 0100: 266MHz ( DDR266 ) + * 0101: 333MHz ( DDR333 ) + * 0110: 400MHz ( DDR400 ) + * 0111: 533MHz ( DDR I/II 533 + * 1000: 667MHz ( DDR I/II 667) + * Bit[3:0] + * N: Frame Buffer Size 2^N MB + */ + u8 i; + device_t dev; + dev = dev_find_slot(0, PCI_DEVFN(0, 3)); + i = pci_read_config8(dev, 0xa1); + i = (i & 0x70); + i = i >> 4; + if (i == 0) { + regs->eax = 0x00; //not support 5f18 + break; + } + i = i + 2; + regs->ebx = (u32) i; + i = pci_read_config8(dev, 0x90); + i = (i & 0x07); + i = i + 3; + i = i << 4; + regs->ebx = regs->ebx + ((u32) i); + regs->eax = 0x5f; + res = 0; + break; + } + case 0x5f00: + regs->eax = 0x005f; + res = 0; + 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 = 0x005f; + res = 0; + break; + default: + printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n", + regs->eax & 0xffff); + regs->eax = 0; + break; + } + return res; +} + void write_protect_vgabios(void) { device_t dev; @@ -70,12 +147,12 @@ static void vga_init(device_t dev) { uint8_t reg8; - print_debug("Initiailizing VGA...\n"); - u8 tmp8; -//A20 OPEN - tmp8 = inb(0x92); - tmp8 = tmp8 | 2; - outb(tmp8, 0x92); + mainboard_interrupt_handlers(0x15, &via_vx800_int15_handler); + + //A20 OPEN + reg8 = inb(0x92); + reg8 = reg8 | 2; + outb(reg8, 0x92); //* //pci_write_config8(dev, 0x04, 0x07); @@ -85,27 +162,17 @@ static void vga_init(device_t dev) pci_write_config32(dev, 0x14, VIACONFIG_VGA_PCI_14); pci_write_config8(dev, 0x3c, 0x0a); //same with vx855_lpc.c //*/ - printk(BIOS_EMERG, "file '%s', line %d\n\n", __FILE__, __LINE__); -#if 1 - printk(BIOS_DEBUG, "INSTALL REAL-MODE IDT\n"); - setup_realmode_idt(); - printk(BIOS_DEBUG, "DO THE VGA BIOS\n"); + 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(); - do_vgabios(); - if ((acpi_sleep_type == 3)/* || (PAYLOAD_IS_SEABIOS == 0)*/) { - printk(BIOS_DEBUG, "Enable VGA console\n"); - // remove this function since in cn700 it is said "VGA seems to work without this, but crash & burn with it" - //but the existense of vga_enable_console() seems do not hurt my coreboot. XP+ubuntu s3 can resume with and without this function. - //and remove it also do not help my s3 problem: desktop screen have some thin black line, after resuming back to win. - vga_enable_console(); - } -#else -/* Attempt to manually force the rom to load */ - printk(BIOS_DEBUG, "Forcing rom load\n"); - pci_rom_load(dev, 0xfff80000); - run_bios(dev, 0xc0000); -#endif if ((acpi_sleep_type == 3)/* || (PAYLOAD_IS_SEABIOS == 0)*/) { /* It's not clear if these need to be programmed before or after * the VGA bios runs. Try both, clean up later */ @@ -117,13 +184,13 @@ static void vga_init(device_t dev) outb(0x3d, CRTM_INDEX); outb(reg8, CRTM_DATA); +#if 0 /* Set framebuffer size to CONFIG_VIDEO_MB mb */ - /*reg8 = (CONFIG_VIDEO_MB/4); - outb(0x39, SR_INDEX); - outb(reg8, SR_DATA); */ + reg8 = (CONFIG_VIDEO_MB/4); + outb(0x39, SR_INDEX); + outb(reg8, SR_DATA); +#endif } - printk(BIOS_EMERG, "file '%s', line %d\n\n", __FILE__, __LINE__); - } static struct device_operations vga_operations = { |