From f75b19ac85ccfffba5eca37700d4c705b24a355e Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Thu, 22 Apr 2010 18:15:32 +0000 Subject: via epia-m now works with default x86.c instead of its own copy of vgabios.c. Allows to drop quite a bunch of nasty code Signed-off-by: Stefan Reinauer Acked-by: Stefan Reinauer git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5478 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/northbridge/via/vt8623/Makefile.inc | 1 + src/northbridge/via/vt8623/northbridge.c | 76 --------------- src/northbridge/via/vt8623/northbridge.h | 6 +- src/northbridge/via/vt8623/vga.c | 158 +++++++++++++++++++++++++++++++ 4 files changed, 160 insertions(+), 81 deletions(-) create mode 100644 src/northbridge/via/vt8623/vga.c (limited to 'src/northbridge/via') diff --git a/src/northbridge/via/vt8623/Makefile.inc b/src/northbridge/via/vt8623/Makefile.inc index c9dc918ecc..47682ad13d 100644 --- a/src/northbridge/via/vt8623/Makefile.inc +++ b/src/northbridge/via/vt8623/Makefile.inc @@ -19,4 +19,5 @@ ## driver-y += northbridge.o +driver-y += vga.o diff --git a/src/northbridge/via/vt8623/northbridge.c b/src/northbridge/via/vt8623/northbridge.c index c7a992138b..4920ec3973 100644 --- a/src/northbridge/via/vt8623/northbridge.c +++ b/src/northbridge/via/vt8623/northbridge.c @@ -105,82 +105,6 @@ static const struct pci_driver agp_driver __pci_driver = { .device = PCI_DEVICE_ID_VIA_8633_1, }; -static void vga_init(device_t dev) -{ - //unsigned long fb; - //msr_t clocks1,clocks2,instructions,setup; - - printk(BIOS_DEBUG, "VGA random fixup ...\n"); - pci_write_config8(dev, 0x04, 0x07); - pci_write_config8(dev, 0x0d, 0x20); - pci_write_config32(dev,0x10,0xd8000008); - pci_write_config32(dev,0x14,0xdc000000); - - // set up performnce counters for debugging vga init sequence - //setup.lo = 0x1c0; // count instructions - //wrmsr(0x187,setup); - //instructions.hi = 0; - //instructions.lo = 0; - //wrmsr(0xc2,instructions); - //clocks1 = rdmsr(0x10); - - -#if 0 - /* code to make vga init go through the emulator - as of yet this does not workfor the epia-m */ - pci_dev_init(dev); - - call_bios_interrupt(0x10,0x4f1f,0x8003,1,0); - - //clocks2 = rdmsr(0x10); - //instructions = rdmsr(0xc2); - - printk(BIOS_DEBUG, "Clocks 1 = %08x:%08x\n",clocks1.hi,clocks1.lo); - printk(BIOS_DEBUG, "Clocks 2 = %08x:%08x\n",clocks2.hi,clocks2.lo); - printk(BIOS_DEBUG, "Instructions = %08x:%08x\n",instructions.hi,instructions.lo); - -#else - - /* code to make vga init run in real mode - does work but against the current coreboot philosophy */ - printk(BIOS_DEBUG, "INSTALL REAL-MODE IDT\n"); - setup_realmode_idt(); - printk(BIOS_DEBUG, "DO THE VGA BIOS\n"); - do_vgabios(); - - //clocks2 = rdmsr(0x10); - //instructions = rdmsr(0xc2); - - //printk(BIOS_DEBUG, "Clocks 1 = %08x:%08x\n",clocks1.hi,clocks1.lo); - //printk(BIOS_DEBUG, "Clocks 2 = %08x:%08x\n",clocks2.hi,clocks2.lo); - //printk(BIOS_DEBUG, "Instructions = %08x:%08x\n",instructions.hi,instructions.lo); - - vga_enable_console(); - -#endif - - pci_write_config32(dev,0x30,0); - - /* Set the vga mtrrs - disable for the moment as the add_var_mtrr function has vapourised */ -#if 0 - add_var_mtrr( 0xd0000000 >> 10, 0x08000000>>10, MTRR_TYPE_WRCOMB); - fb = pci_read_config32(dev,0x10); // get the fb address - add_var_mtrr( fb>>10, 8192, MTRR_TYPE_WRCOMB); -#endif -} - -static struct device_operations vga_operations = { - .read_resources = pci_dev_read_resources, - .set_resources = pci_dev_set_resources, - .enable_resources = pci_dev_enable_resources, - .init = vga_init, - .ops_pci = 0, -}; - -static const struct pci_driver vga_driver __pci_driver = { - .ops = &vga_operations, - .vendor = PCI_VENDOR_ID_VIA, - .device = 0x3122, -}; - static void ram_resource(device_t dev, unsigned long index, unsigned long basek, unsigned long sizek) { diff --git a/src/northbridge/via/vt8623/northbridge.h b/src/northbridge/via/vt8623/northbridge.h index f589860cd5..b3a2e75f15 100644 --- a/src/northbridge/via/vt8623/northbridge.h +++ b/src/northbridge/via/vt8623/northbridge.h @@ -2,11 +2,7 @@ #define NORTHBRIDGE_VIA_VT8623_H unsigned int vt8623_scan_root_bus(device_t root, unsigned int max); - -void vga_enable_console(void); -void do_vgabios(void); -void setup_realmode_idt(void); +extern void (*vga_enable_console)(void) __attribute__((regparm(0))); void write_protect_vgabios(void); - #endif /* NORTHBRIDGE_VIA_VT8623_H */ diff --git a/src/northbridge/via/vt8623/vga.c b/src/northbridge/via/vt8623/vga.c new file mode 100644 index 0000000000..7dbb7831b1 --- /dev/null +++ b/src/northbridge/via/vt8623/vga.c @@ -0,0 +1,158 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2009 coresystems GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "chip.h" +#include "northbridge.h" + +static int via_vt8623_int15_handler(struct eregs *regs) +{ + int res=-1; + printk(BIOS_DEBUG, "via_vt8623_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) +{ + device_t dev; + + printk(BIOS_DEBUG, "write_protect_vgabios\n"); + + dev = dev_find_device(PCI_VENDOR_ID_VIA, 0x3122, 0); + if (dev) + pci_write_config8(dev, 0x61, 0xaa); + + dev = dev_find_device(PCI_VENDOR_ID_VIA, 0x3123, 0); + if (dev) + pci_write_config8(dev, 0x61, 0xaa); +} + +static void vga_random_fixup(device_t dev) +{ + printk(BIOS_DEBUG, "VGA random fixup ...\n"); + pci_write_config8(dev, 0x04, 0x07); + pci_write_config8(dev, 0x0d, 0x20); + pci_write_config32(dev,0x10,0xd8000008); + pci_write_config32(dev,0x14,0xdc000000); +} + +static void vga_init(device_t dev) +{ + vga_random_fixup(dev); + + mainboard_interrupt_handlers(0x15, &via_vt8623_int15_handler); + +#ifdef MEASURE_VGA_INIT_TIME + msr_t clocks1, clocks2, instructions, setup; + + // set up performnce counters for debugging vga init sequence + setup.lo = 0x1c0; // count instructions + wrmsr(0x187,setup); + instructions.hi = 0; + instructions.lo = 0; + wrmsr(0xc2,instructions); + clocks1 = rdmsr(0x10); +#endif + 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(); + +#ifdef MEASURE_VGA_INIT_TIME + clocks2 = rdmsr(0x10); + instructions = rdmsr(0xc2); + + printk(BIOS_DEBUG, "Clocks 1 = %08x:%08x\n",clocks1.hi,clocks1.lo); + printk(BIOS_DEBUG, "Clocks 2 = %08x:%08x\n",clocks2.hi,clocks2.lo); + printk(BIOS_DEBUG, "Instructions = %08x:%08x\n",instructions.hi,instructions.lo); +#endif + + pci_write_config32(dev, 0x30, 0); + +#if 0 + /* Set the vga mtrrs - disable for the moment as the add_var_mtrr function has vapourised */ + unsigned long fb; + add_var_mtrr( 0xd0000000 >> 10, 0x08000000>>10, MTRR_TYPE_WRCOMB); + fb = pci_read_config32(dev,0x10); // get the fb address + add_var_mtrr( fb>>10, 8192, MTRR_TYPE_WRCOMB); +#endif +} + +static struct device_operations vga_operations = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = vga_init, + .ops_pci = 0, +}; + +static const struct pci_driver vga_driver __pci_driver = { + .ops = &vga_operations, + .vendor = PCI_VENDOR_ID_VIA, + .device = 0x3122, +}; -- cgit v1.2.3