diff options
Diffstat (limited to 'src/mainboard/emulation/qemu-i386')
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/Config.lb | 114 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/Options.lb | 118 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/auto.c | 38 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/chip.h | 4 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/cmos.layout | 74 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/debug.c | 128 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/failover.c | 29 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/irq_tables.c | 35 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/mainboard.c | 39 | ||||
| -rw-r--r-- | src/mainboard/emulation/qemu-i386/vgabios.c | 838 |
10 files changed, 0 insertions, 1417 deletions
diff --git a/src/mainboard/emulation/qemu-i386/Config.lb b/src/mainboard/emulation/qemu-i386/Config.lb deleted file mode 100644 index b2a009d2e5..0000000000 --- a/src/mainboard/emulation/qemu-i386/Config.lb +++ /dev/null @@ -1,114 +0,0 @@ -## -## Compute the location and size of where this firmware image -## (coreboot plus bootloader) will live in the boot rom chip. -## -default ROM_SIZE = 256 * 1024 -default ROM_SECTION_SIZE = ROM_SIZE -default ROM_SECTION_OFFSET = 0 - -## -## Compute the start location and size size of -## The coreboot bootloader. -## -default PAYLOAD_SIZE = ( ROM_SECTION_SIZE - ROM_IMAGE_SIZE ) -default CONFIG_ROM_PAYLOAD_START = (0xffffffff - ROM_SIZE + ROM_SECTION_OFFSET + 1) - -## -## Compute where this copy of coreboot will start in the boot rom -## -default _ROMBASE = ( CONFIG_ROM_PAYLOAD_START + PAYLOAD_SIZE ) - -## -## Compute a range of ROM that can cached to speed up coreboot, -## execution speed. -## -## XIP_ROM_SIZE must be a power of 2. -## XIP_ROM_BASE must be a multiple of XIP_ROM_SIZE -## -default XIP_ROM_SIZE=32*1024 -default XIP_ROM_BASE = ( _ROMBASE + ROM_IMAGE_SIZE - XIP_ROM_SIZE ) - -## -## Set all of the defaults for an x86 architecture -## - -arch i386 end - -## -## Build the objects we have code for in this directory. -## - -driver mainboard.o -object vgabios.o -if HAVE_PIRQ_TABLE object irq_tables.o end -#object reset.o - -## -## Romcc output -## -makerule ./failover.E - depends "$(MAINBOARD)/failover.c ./romcc" - action "./romcc -E -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@" -end - -makerule ./failover.inc - depends "$(MAINBOARD)/failover.c ./romcc" - action "./romcc -O --label-prefix=failover -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/failover.c -o $@" -end - -makerule ./auto.E - depends "$(MAINBOARD)/auto.c option_table.h ./romcc" - action "./romcc -E -mcpu=i386 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@" -end -makerule ./auto.inc - depends "$(MAINBOARD)/auto.c option_table.h ./romcc" - action "./romcc -mcpu=i386 -O -I$(TOP)/src -I. $(CPPFLAGS) $(MAINBOARD)/auto.c -o $@" -end - -## -## Build our 16 bit and 32 bit coreboot entry code -## -mainboardinit cpu/x86/16bit/entry16.inc -mainboardinit cpu/x86/32bit/entry32.inc -ldscript /cpu/x86/16bit/entry16.lds -ldscript /cpu/x86/32bit/entry32.lds - -## -## Build our reset vector (This is where coreboot is entered) -## -mainboardinit cpu/x86/16bit/reset16.inc -ldscript /cpu/x86/16bit/reset16.lds - -### Should this be in the northbridge code? -mainboardinit arch/i386/lib/cpu_reset.inc - -## -## Include an id string (For safe flashing) -## -mainboardinit arch/i386/lib/id.inc -ldscript /arch/i386/lib/id.lds - -### -### O.k. We aren't just an intermediary anymore! -### - -## -## Setup RAM -## -mainboardinit cpu/x86/fpu/enable_fpu.inc -mainboardinit ./auto.inc - -## -## Include the secondary Configuration files -## -dir /pc80 -config chip.h - -chip cpu/emulation/qemu-i386 - device pci_domain 0 on - device pci 0.0 on end - device pci 1.0 on end -# register "com1" = "{1}" -# register "com1" = "{1, 0, 0x3f8, 4}" - end -end diff --git a/src/mainboard/emulation/qemu-i386/Options.lb b/src/mainboard/emulation/qemu-i386/Options.lb deleted file mode 100644 index 74e543f737..0000000000 --- a/src/mainboard/emulation/qemu-i386/Options.lb +++ /dev/null @@ -1,118 +0,0 @@ -uses HAVE_MP_TABLE -uses HAVE_PIRQ_TABLE -uses USE_FALLBACK_IMAGE -uses HAVE_FALLBACK_BOOT -uses HAVE_HARD_RESET -uses HAVE_OPTION_TABLE -uses USE_OPTION_TABLE -uses CONFIG_COMPRESS -uses CONFIG_COMPRESSED_PAYLOAD_NRV2B -uses CONFIG_COMPRESSED_PAYLOAD_LZMA -uses CONFIG_PRECOMPRESSED_PAYLOAD -uses CONFIG_ROM_PAYLOAD -uses IRQ_SLOT_COUNT -uses MAINBOARD -uses MAINBOARD_VENDOR -uses MAINBOARD_PART_NUMBER -uses COREBOOT_EXTRA_VERSION -uses ARCH -uses FALLBACK_SIZE -uses STACK_SIZE -uses HEAP_SIZE -uses ROM_SIZE -uses ROM_SECTION_SIZE -uses ROM_IMAGE_SIZE -uses ROM_SECTION_SIZE -uses ROM_SECTION_OFFSET -uses CONFIG_ROM_PAYLOAD_START -uses PAYLOAD_SIZE -uses _ROMBASE -uses _RAMBASE -uses XIP_ROM_SIZE -uses XIP_ROM_BASE -uses HAVE_MP_TABLE -uses CROSS_COMPILE -uses CC -uses HOSTCC -uses OBJCOPY - -uses CONFIG_CONSOLE_SERIAL8250 - - -uses DEFAULT_CONSOLE_LOGLEVEL -uses MAXIMUM_CONSOLE_LOGLEVEL - -default CONFIG_CONSOLE_SERIAL8250=1 -default DEFAULT_CONSOLE_LOGLEVEL=8 -default MAXIMUM_CONSOLE_LOGLEVEL=8 -## ROM_SIZE is the size of boot ROM that this board will use. -default ROM_SIZE = 256*1024 - -### -### Build options -### - -## -## Build code for the fallback boot -## -default HAVE_FALLBACK_BOOT=1 - -## -## no MP table -## -default HAVE_MP_TABLE=0 - -## -## Build code to reset the motherboard from coreboot -## -default HAVE_HARD_RESET=0 - -## -## Build code to export a programmable irq routing table -## -default HAVE_PIRQ_TABLE=0 -default IRQ_SLOT_COUNT=5 -#object irq_tables.o - -## -## Build code to export a CMOS option table -## -default HAVE_OPTION_TABLE=1 - -### -### coreboot layout values -### - -## ROM_IMAGE_SIZE is the amount of space to allow coreboot to occupy. -default ROM_IMAGE_SIZE = 65536 -default FALLBACK_SIZE = 131072 - -## -## Use a small 8K stack -## -default STACK_SIZE=0x2000 - -## -## Use a small 16K heap -## -default HEAP_SIZE=0x4000 - -## -## Only use the option table in a normal image -## -#default USE_OPTION_TABLE = !USE_FALLBACK_IMAGE -default USE_OPTION_TABLE = 0 - -default _RAMBASE = 0x00004000 - -default CONFIG_ROM_PAYLOAD = 1 - -## -## The default compiler -## -default CC="$(CROSS_COMPILE)gcc -m32" -default HOSTCC="gcc" - -end - - diff --git a/src/mainboard/emulation/qemu-i386/auto.c b/src/mainboard/emulation/qemu-i386/auto.c deleted file mode 100644 index d2fa623d68..0000000000 --- a/src/mainboard/emulation/qemu-i386/auto.c +++ /dev/null @@ -1,38 +0,0 @@ -#define ASSEMBLY 1 - -#include <stdint.h> -#include <device/pci_def.h> -#include <device/pci_ids.h> -#include <arch/io.h> -#include <device/pnp_def.h> -#include <arch/romcc_io.h> -#include <arch/hlt.h> -#include "option_table.h" -#include "pc80/mc146818rtc_early.c" -#include "pc80/serial.c" -#include "arch/i386/lib/console.c" - -/* - */ -void udelay(int usecs) -{ - int i; - for(i = 0; i < usecs; i++) - outb(i&0xff, 0x80); -} - -#include "lib/delay.c" -#include "cpu/x86/lapic/boot_cpu.c" -#include "debug.c" - -static void main(void) -{ - /* init_timer();*/ - outb(5, 0x80); - - uart_init(); - console_init(); - - //print_pci_devices(); - //dump_pci_devices(); -} diff --git a/src/mainboard/emulation/qemu-i386/chip.h b/src/mainboard/emulation/qemu-i386/chip.h deleted file mode 100644 index 3aae25c769..0000000000 --- a/src/mainboard/emulation/qemu-i386/chip.h +++ /dev/null @@ -1,4 +0,0 @@ -extern struct chip_operations mainboard_emulation_qemu_i386_ops; - -struct mainboard_emulation_qemu_i386_config { -}; diff --git a/src/mainboard/emulation/qemu-i386/cmos.layout b/src/mainboard/emulation/qemu-i386/cmos.layout deleted file mode 100644 index 5ba4c032c1..0000000000 --- a/src/mainboard/emulation/qemu-i386/cmos.layout +++ /dev/null @@ -1,74 +0,0 @@ -entries - -#start-bit length config config-ID name -#0 8 r 0 seconds -#8 8 r 0 alarm_seconds -#16 8 r 0 minutes -#24 8 r 0 alarm_minutes -#32 8 r 0 hours -#40 8 r 0 alarm_hours -#48 8 r 0 day_of_week -#56 8 r 0 day_of_month -#64 8 r 0 month -#72 8 r 0 year -#80 4 r 0 rate_select -#84 3 r 0 REF_Clock -#87 1 r 0 UIP -#88 1 r 0 auto_switch_DST -#89 1 r 0 24_hour_mode -#90 1 r 0 binary_values_enable -#91 1 r 0 square-wave_out_enable -#92 1 r 0 update_finished_enable -#93 1 r 0 alarm_interrupt_enable -#94 1 r 0 periodic_interrupt_enable -#95 1 r 0 disable_clock_updates -#96 288 r 0 temporary_filler -0 384 r 0 reserved_memory -384 1 e 4 boot_option -385 1 e 4 last_boot -386 1 e 1 ECC_memory -388 4 r 0 reboot_bits -392 3 e 5 baud_rate -400 1 e 1 power_on_after_fail -412 4 e 6 debug_level -416 4 e 7 boot_first -420 4 e 7 boot_second -424 4 e 7 boot_third -428 4 h 0 boot_index -432 8 h 0 boot_countdown -1008 16 h 0 check_sum - -enumerations - -#ID value text -1 0 Disable -1 1 Enable -2 0 Enable -2 1 Disable -4 0 Fallback -4 1 Normal -5 0 115200 -5 1 57600 -5 2 38400 -5 3 19200 -5 4 9600 -5 5 4800 -5 6 2400 -5 7 1200 -6 6 Notice -6 7 Info -6 8 Debug -6 9 Spew -7 0 Network -7 1 HDD -7 2 Floppy -7 8 Fallback_Network -7 9 Fallback_HDD -7 10 Fallback_Floppy -#7 3 ROM - -checksums - -checksum 392 1007 1008 - - diff --git a/src/mainboard/emulation/qemu-i386/debug.c b/src/mainboard/emulation/qemu-i386/debug.c deleted file mode 100644 index 714fcc5783..0000000000 --- a/src/mainboard/emulation/qemu-i386/debug.c +++ /dev/null @@ -1,128 +0,0 @@ - -static void print_debug_pci_dev(unsigned dev) -{ - print_debug("PCI: "); - print_debug_hex8((dev >> 16) & 0xff); - print_debug_char(':'); - print_debug_hex8((dev >> 11) & 0x1f); - print_debug_char('.'); - print_debug_hex8((dev >> 8) & 7); -} - -static void print_pci_devices(void) -{ - device_t dev; - for(dev = PCI_DEV(0, 0, 0); - dev <= PCI_DEV(0, 0x1f, 0x7); - dev += PCI_DEV(0,0,1)) { - uint32_t id; - id = pci_read_config32(dev, PCI_VENDOR_ID); - if (((id & 0xffff) == 0x0000) || ((id & 0xffff) == 0xffff) || - (((id >> 16) & 0xffff) == 0xffff) || - (((id >> 16) & 0xffff) == 0x0000)) { - continue; - } - print_debug_pci_dev(dev); - print_debug("\r\n"); - } -} - -static void dump_pci_device(unsigned dev) -{ - int i; - print_debug_pci_dev(dev); - print_debug("\r\n"); - - for(i = 0; i <= 255; i++) { - unsigned char val; - if ((i & 0x0f) == 0) { - print_debug_hex8(i); - print_debug_char(':'); - } - val = pci_read_config8(dev, i); - print_debug_char(' '); - print_debug_hex8(val); - if ((i & 0x0f) == 0x0f) { - print_debug("\r\n"); - } - } -} - -static void dump_pci_devices(void) -{ - device_t dev; - for(dev = PCI_DEV(0, 0, 0); - dev <= PCI_DEV(0, 0x1f, 0x7); - dev += PCI_DEV(0,0,1)) { - uint32_t id; - id = pci_read_config32(dev, PCI_VENDOR_ID); - if (((id & 0xffff) == 0x0000) || ((id & 0xffff) == 0xffff) || - (((id >> 16) & 0xffff) == 0xffff) || - (((id >> 16) & 0xffff) == 0x0000)) { - continue; - } - dump_pci_device(dev); - } -} -#if 0 -static void dump_spd_registers(const struct mem_controller *ctrl) -{ - int i; - print_debug("\r\n"); - for(i = 0; i < 4; i++) { - unsigned device; - device = ctrl->channel0[i]; - if (device) { - int j; - print_debug("dimm: "); - print_debug_hex8(i); - print_debug(".0: "); - print_debug_hex8(device); - for(j = 0; j < 256; j++) { - int status; - unsigned char byte; - if ((j & 0xf) == 0) { - print_debug("\r\n"); - print_debug_hex8(j); - print_debug(": "); - } - status = smbus_read_byte(device, j); - if (status < 0) { - print_debug("bad device\r\n"); - break; - } - byte = status & 0xff; - print_debug_hex8(byte); - print_debug_char(' '); - } - print_debug("\r\n"); - } - device = ctrl->channel1[i]; - if (device) { - int j; - print_debug("dimm: "); - print_debug_hex8(i); - print_debug(".1: "); - print_debug_hex8(device); - for(j = 0; j < 256; j++) { - int status; - unsigned char byte; - if ((j & 0xf) == 0) { - print_debug("\r\n"); - print_debug_hex8(j); - print_debug(": "); - } - status = smbus_read_byte(device, j); - if (status < 0) { - print_debug("bad device\r\n"); - break; - } - byte = status & 0xff; - print_debug_hex8(byte); - print_debug_char(' '); - } - print_debug("\r\n"); - } - } -} -#endif diff --git a/src/mainboard/emulation/qemu-i386/failover.c b/src/mainboard/emulation/qemu-i386/failover.c deleted file mode 100644 index 10bb2f48c1..0000000000 --- a/src/mainboard/emulation/qemu-i386/failover.c +++ /dev/null @@ -1,29 +0,0 @@ -#define ASSEMBLY 1 -#include <stdint.h> -#include <device/pci_def.h> -#include <device/pci_ids.h> -#include <arch/io.h> -#include "arch/romcc_io.h" -#include "pc80/mc146818rtc_early.c" -#include "cpu/x86/lapic/boot_cpu.c" - -static void main(void) -{ - /* for now, just always assume failure */ - -#if 0 - /* Is this a cpu reset? */ - if (cpu_init_detected()) { - if (last_boot_normal()) { - asm("jmp __normal_image"); - } else { - asm("jmp __cpu_reset"); - } - } - - /* This is the primary cpu how should I boot? */ - else if (do_normal_boot()) { - asm("jmp __normal_image"); - } -#endif -} diff --git a/src/mainboard/emulation/qemu-i386/irq_tables.c b/src/mainboard/emulation/qemu-i386/irq_tables.c deleted file mode 100644 index d75eaa4639..0000000000 --- a/src/mainboard/emulation/qemu-i386/irq_tables.c +++ /dev/null @@ -1,35 +0,0 @@ -/* This file was generated by getpir.c, do not modify! - (but if you do, please run checkpir on it to verify) - * Contains the IRQ Routing Table dumped directly from your memory, which BIOS sets up - * - * Documentation at : http://www.microsoft.com/hwdev/busbios/PCIIRQ.HTM -*/ - -#include <arch/pirq_routing.h> - -const struct irq_routing_table intel_irq_routing_table = { - PIRQ_SIGNATURE, /* u32 signature */ - PIRQ_VERSION, /* u16 version */ - 32+16*6, /* there can be total 6 devices on the bus */ - 0x00, /* Where the interrupt router lies (bus) */ - (0x01<<3)|0x0, /* Where the interrupt router lies (dev) */ - 0, /* IRQs devoted exclusively to PCI usage */ - 0x8086, /* Vendor */ - 0x7000, /* Device */ - 0, /* Crap (miniport) */ - { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */ - 0x7, /* u8 checksum , this hase to set to some value that would give 0 after the sum of all bytes for this structure (including checksum) */ - { - /* bus, dev|fn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu */ - {0x00,(0x01<<3)|0x0, {{0x60, 0xdef8}, {0x61, 0xdef8}, {0x62, 0xdef8}, {0x63, 0x0def8}}, 0x0, 0x0}, - {0x00,(0x02<<3)|0x0, {{0x61, 0xdef8}, {0x62, 0xdef8}, {0x63, 0xdef8}, {0x60, 0x0def8}}, 0x1, 0x0}, - {0x00,(0x03<<3)|0x0, {{0x62, 0xdef8}, {0x63, 0xdef8}, {0x60, 0xdef8}, {0x61, 0x0def8}}, 0x2, 0x0}, - {0x00,(0x04<<3)|0x0, {{0x63, 0xdef8}, {0x60, 0xdef8}, {0x61, 0xdef8}, {0x62, 0x0def8}}, 0x3, 0x0}, - {0x00,(0x05<<3)|0x0, {{0x60, 0xdef8}, {0x61, 0xdef8}, {0x62, 0xdef8}, {0x63, 0x0def8}}, 0x4, 0x0}, - {0x00,(0x06<<3)|0x0, {{0x61, 0xdef8}, {0x62, 0xdef8}, {0x63, 0xdef8}, {0x60, 0x0def8}}, 0x5, 0x0}, - } -}; -unsigned long write_pirq_routing_table(unsigned long addr) -{ - return copy_pirq_routing_table(addr); -} diff --git a/src/mainboard/emulation/qemu-i386/mainboard.c b/src/mainboard/emulation/qemu-i386/mainboard.c deleted file mode 100644 index cfbc0b2246..0000000000 --- a/src/mainboard/emulation/qemu-i386/mainboard.c +++ /dev/null @@ -1,39 +0,0 @@ -#include <console/console.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <device/pci_ops.h> -#include <arch/io.h> -#include "chip.h" - -void vga_enable_console(); - -static void vga_init(device_t dev) -{ - /* code to make vga init run in real mode - does work but against the current coreboot philosophy */ - printk_debug("INSTALL REAL-MODE IDT\n"); - setup_realmode_idt(); - printk_debug("DO THE VGA BIOS\n"); - do_vgabios(); - - vga_enable_console(); -} - -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 = 0x1013, - .device = 0x00b8, -}; - -struct chip_operations mainboard_emulation_qemu_i386_ops = { - CHIP_NAME("QEMU Mainboard") -}; - diff --git a/src/mainboard/emulation/qemu-i386/vgabios.c b/src/mainboard/emulation/qemu-i386/vgabios.c deleted file mode 100644 index 7f42f0ab12..0000000000 --- a/src/mainboard/emulation/qemu-i386/vgabios.c +++ /dev/null @@ -1,838 +0,0 @@ -#include <console/console.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <device/pci_ops.h> -#undef __KERNEL__ -#include <arch/io.h> -#include <string.h> - -/* vgabios.c. Derived from: */ - -/*------------------------------------------------------------ -*- C -*- - * 2 Kernel Monte a.k.a. Linux loading Linux on x86 - * - * Erik Arjan Hendriks <hendriks@lanl.gov> - * - * This version is a derivative of the original two kernel monte - * which is (C) 2000 Scyld. - * - * Copyright (C) 2000 Scyld Computing Corporation - * - * 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; either version 2 of the License, or - * (at your option) any later version. - * - * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - * Portions related to the alpha architecture are: - * - * Copyright(C) 2001 University of California. LA-CC Number 01-67. - * This software has been authored by an employee or employees of the - * University of California, operator of the Los Alamos National - * Laboratory under Contract No. W-7405-ENG-36 with the U.S. - * Department of Energy. The U.S. Government has rights to use, - * reproduce, and distribute this software. If the software is - * modified to produce derivative works, such modified software should - * be clearly marked, so as not to confuse it with the version - * available from LANL. - * - * This software may be used and distributed according to the terms - * of the GNU General Public License, incorporated herein by - * reference to http://www.gnu.org/licenses/gpl.html. - * - * This software is provided by the author(s) "as is" and any express - * or implied warranties, including, but not limited to, the implied - * warranties of merchantability and fitness for a particular purpose - * are disclaimed. In no event shall the author(s) be liable for any - * direct, indirect, incidental, special, exemplary, or consequential - * damages (including, but not limited to, procurement of substitute - * goods or services; loss of use, data, or profits; or business - * interruption) however caused and on any theory of liability, - * whether in contract, strict liability, or tort (including - * negligence or otherwise) arising in any way out of the use of this - * software, even if advised of the possibility of such damage. - * - * $Id: vgabios.c,v 1.5 2004/10/06 17:33:52 rminnich Exp $ - *--------------------------------------------------------------------*/ - -/* Modified to be a self sufficient plug in so that it can be used - without reliance on other parts of core coreboot - (C) 2005 Nick.Barker9@btinternet.com - - Used initially for epia-m where there are problems getting the bios - emulator to successfully run this bios. -*/ - -/* Declare a temporary global descriptor table - necessary because the - Core part of the bios no longer sets up any 16 bit segments */ -__asm__ ( - /* pointer to original gdt */ - "gdtarg: \n" - " .word gdt_limit \n" - " .long gdt \n" - - /* compute the table limit */ - "__mygdt_limit = __mygdt_end - __mygdt - 1 \n" - - "__mygdtaddr: \n" - " .word __mygdt_limit \n" - " .long __mygdt \n" - - "__mygdt: \n" - /* selgdt 0, unused */ - " .word 0x0000, 0x0000 \n" - " .byte 0x00, 0x00, 0x00, 0x00 \n" - - /* selgdt 8, unused */ - " .word 0x0000, 0x0000 \n" - " .byte 0x00, 0x00, 0x00, 0x00 \n" - - /* selgdt 0x10, flat code segment */ - " .word 0xffff, 0x0000 \n" - " .byte 0x00, 0x9b, 0xcf, 0x00 \n" - - /* selgdt 0x18, flat data segment */ - " .word 0xffff, 0x0000 \n" - " .byte 0x00, 0x93, 0xcf, 0x00 \n" - - /* selgdt 0x20, unused */ - " .word 0x0000, 0x0000 \n" - " .byte 0x00, 0x00, 0x00, 0x00 \n" - - /* selgdt 0x28 16-bit 64k code at 0x00000000 */ - " .word 0xffff, 0x0000 \n" - " .byte 0, 0x9a, 0, 0 \n" - - /* selgdt 0x30 16-bit 64k data at 0x00000000 */ - " .word 0xffff, 0x0000 \n" - " .byte 0, 0x92, 0, 0 \n" - - "__mygdt_end: \n" -); - -/* Declare a pointer to where our idt is going to be i.e. at mem zero */ -__asm__ ("__myidt: \n" - /* 16-bit limit */ - " .word 1023 \n" - /* 24-bit base */ - " .long 0 \n" - " .word 0 \n" -); - -/* The address arguments to this function are PHYSICAL ADDRESSES */ -static void real_mode_switch_call_vga(unsigned long devfn) -{ - __asm__ __volatile__ ( - // paranoia -- does ecx get saved? not sure. This is - // the easiest safe thing to do. - " pushal \n" - /* save the stack */ - " mov %esp, __stack \n" - " jmp 1f \n" - "__stack: .long 0 \n" - "1:\n" - /* get devfn into %ecx */ - " movl %esp, %ebp \n" - " movl 8(%ebp), %ecx \n" - /* load 'our' gdt */ - " lgdt %cs:__mygdtaddr \n" - - /* This configures CS properly for real mode. */ - " ljmp $0x28, $__rms_16bit\n" - "__rms_16bit: \n" - " .code16 \n" - /* 16 bit code from here on... */ - - /* Load the segment registers w/ properly configured segment - * descriptors. They will retain these configurations (limits, - * writability, etc.) once protected mode is turned off. */ - " mov $0x30, %ax \n" - " mov %ax, %ds \n" - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - " mov %ax, %ss \n" - - /* Turn off protection (bit 0 in CR0) */ - " movl %cr0, %eax \n" - " andl $0xFFFFFFFE, %eax \n" - " movl %eax, %cr0 \n" - - /* Now really going into real mode */ - " ljmp $0, $__rms_real\n" - "__rms_real: \n" - - /* put the stack at the end of page zero. - * that way we can easily share it between real and protected, - * since the 16-bit ESP at segment 0 will work for any case. - /* Setup a stack */ - " mov $0x0, %ax \n" - " mov %ax, %ss \n" - " movl $0x1000, %eax \n" - " movl %eax, %esp \n" - - /* Load our 16 it idt */ - " xor %ax, %ax \n" - " mov %ax, %ds \n" - " lidt __myidt \n" - - /* Dump zeros in the other segregs */ - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - " mov $0x40, %ax \n" - " mov %ax, %ds \n" - " mov %cx, %ax \n" - - /* run VGA BIOS at 0xc000:0003 */ - " lcall $0xc000, $0x0003\n" - - /* if we got here, just about done. - * Need to get back to protected mode */ - " movl %cr0, %eax \n" - " orl $0x0000001, %eax\n" /* PE = 1 */ - " movl %eax, %cr0 \n" - - /* Now that we are in protected mode jump to a 32 bit code segment. */ - " data32 ljmp $0x10, $vgarestart\n" - "vgarestart:\n" - " .code32\n" - " movw $0x18, %ax \n" - " mov %ax, %ds \n" - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - " mov %ax, %ss \n" - - /* restore proper gdt and idt */ - " lgdt %cs:gdtarg \n" - " lidt idtarg \n" - - ".globl vga_exit \n" - "vga_exit: \n" - " mov __stack, %esp \n" - " popal \n" - ); -} - -__asm__ (".text\n""real_mode_switch_end:\n"); -extern char real_mode_switch_end[]; - -/* call vga bios int 10 function 0x4f14 to enable main console - epia-m does not always autosence the main console so forcing it on is good !! */ -void vga_enable_console() -{ - __asm__ __volatile__ ( - /* paranoia -- does ecx get saved? not sure. This is - * the easiest safe thing to do. */ - " pushal \n" - /* save the stack */ - " mov %esp, __stack \n" - - /* load 'our' gdt */ - " lgdt %cs:__mygdtaddr \n" - - /* This configures CS properly for real mode. */ - " ljmp $0x28, $__vga_ec_16bit\n" - "__vga_ec_16bit: \n" - " .code16 \n" - /* 16 bit code from here on... */ - - /* Load the segment registers w/ properly configured segment - * descriptors. They will retain these configurations (limits, - * writability, etc.) once protected mode is turned off. */ - " mov $0x30, %ax \n" - " mov %ax, %ds \n" - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - " mov %ax, %ss \n" - - /* Turn off protection (bit 0 in CR0) */ - " movl %cr0, %eax \n" - " andl $0xFFFFFFFE, %eax\n" - " movl %eax, %cr0 \n" - - /* Now really going into real mode */ - " ljmp $0, $__vga_ec_real \n" - "__vga_ec_real: \n" - - /* put the stack at the end of page zero. - * that way we can easily share it between real and protected, - * since the 16-bit ESP at segment 0 will work for any case. - /* Setup a stack */ - " mov $0x0, %ax \n" - " mov %ax, %ss \n" - " movl $0x1000, %eax \n" - " movl %eax, %esp \n" - - /* debugging for RGM */ - " mov $0x11, %al \n" - " outb %al, $0x80 \n" - - /* Load our 16 it idt */ - " xor %ax, %ax \n" - " mov %ax, %ds \n" - " lidt __myidt \n" - - /* Dump zeros in the other segregs */ - " mov %ax, %ds \n" - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - - /* ask bios to enable main console */ - /* set up for int 10 call - values found from X server - * bios call routines */ - //" movw $0x4f14,%ax \n" - " movw $0x0002,%ax \n" - //" movw $0x8003,%bx \n" - " movw $1, %cx \n" - " movw $0, %dx \n" - " movw $0, %di \n" - " int $0x10 \n" - - " movb $0x55, %al \n" - " outb %al, $0x80 \n" - - /* if we got here, just about done. - * Need to get back to protected mode */ - " movl %cr0, %eax \n" - " orl $0x0000001, %eax\n" /* PE = 1 */ - " movl %eax, %cr0 \n" - - /* Now that we are in protected mode jump to a 32 bit code segment. */ - " data32 ljmp $0x10, $vga_ec_restart\n" - "vga_ec_restart:\n" - " .code32\n" - " movw $0x18, %ax \n" - " mov %ax, %ds \n" - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - " mov %ax, %ss \n" - - /* restore proper gdt and idt */ - " lgdt %cs:gdtarg \n" - " lidt idtarg \n" - " .globl vga__ec_exit \n" - "vga_ec_exit:\n" - " mov __stack, %esp \n" - " popal\n" - ); -} - -void do_vgabios(void) -{ - device_t dev; - unsigned long busdevfn; - unsigned int rom = 0; - unsigned char *buf; - unsigned int size = 64*1024; - int i; - - /* clear vga bios data area */ - for (i = 0x400; i < 0x500; i++) { - *(unsigned char *) i = 0; - } - - dev = dev_find_class(PCI_CLASS_DISPLAY_VGA<<8 , 0); - - if (!dev) { - printk_debug("NO VGA FOUND\n"); - return; - } - printk_debug("found VGA: vid=%x, did=%x\n", dev->vendor, dev->device); - - /* declare rom address here - keep any config data out of the way - * of core LXB stuff */ - - rom = 0xc0000; - // pci_write_config32(dev, PCI_ROM_ADDRESS, rom|1); - printk_debug("rom base, size: %x\n", rom); - - buf = (unsigned char *) rom; - if ((buf[0] == 0x55) && (buf[1] == 0xaa)) { - memcpy((void *) 0xc0000, buf, size); - - // write_protect_vgabios(); // in northbridge - - // check signature again - buf = (unsigned char *) 0xc0000; - if (buf[0]==0x55 && buf[1]==0xAA) { - busdevfn = (dev->bus->secondary << 8) | dev->path.u.pci.devfn; - printk_debug("bus/devfn = %#x\n", busdevfn); - - real_mode_switch_call_vga(busdevfn); - } else - printk_debug("Failed to copy VGA BIOS to 0xc0000\n"); - } else - printk_debug("BAD SIGNATURE 0x%x 0x%x\n", buf[0], buf[1]); - - pci_write_config32(dev, PCI_ROM_ADDRESS, 0); -} - - -// we had hoped to avoid this. -// this is a stub IDT only. It's main purpose is to ignore calls -// to the BIOS. -// no longer. Dammit. We have to respond to these. -struct realidt { - unsigned short offset, cs; -}; - -// from a handy writeup that andrey found. - -// handler. -// There are some assumptions we can make here. -// First, the Top Of Stack (TOS) is located on the top of page zero. -// we can share this stack between real and protected mode. -// that simplifies a lot of things ... -// we'll just push all the registers on the stack as longwords, -// and pop to protected mode. -// second, since this only ever runs as part of coreboot, -// we know all the segment register values -- so we don't save any. -// keep the handler that calls things small. It can do a call to -// more complex code in coreboot itself. This helps a lot as we don't -// have to do address fixup in this little stub, and calls are absolute -// so the handler is relocatable. -void handler(void) -{ - __asm__ __volatile__ ( - " .code16 \n" - "idthandle: \n" - " pushal \n" - " movb $0, %al \n" - " ljmp $0, $callbiosint16\n" - "end_idthandle: \n" - " .code32 \n" - ); -} - -void debughandler(void) -{ - __asm__ __volatile__ ( - " .code16 \n" - "debughandle: \n" - " pushw %cx \n" - " movw $250, %cx \n" - "dbh1: \n" - " loop dbh1 \n" - " popw %cx \n" - " iret \n" - "end_debughandle: \n" - ".code32 \n" - ); -} - -// Calling conventions. The first C function is called with this stuff -// on the stack. They look like value parameters, but note that if you -// modify them they will go back to the INTx function modified. -// the C function will call the biosint function with these as -// REFERENCE parameters. In this way, we can easily get -// returns back to the INTx caller (i.e. vgabios) -void callbiosint(void) -{ - __asm__ __volatile__ ( - " .code16 \n" - "callbiosint16: \n" - " push %ds \n" - " push %es \n" - " push %fs \n" - " push %gs \n" - // clean up the int #. To save space we put it in the lower - // byte. But the top 24 bits are junk. - " andl $0xff, %eax\n" - // this push does two things: - // - put the INT # on the stack as a parameter - // - provides us with a temp for the %cr0 mods. - " pushl %eax \n" - " movl %cr0, %eax\n" - " orl $0x00000001, %eax\n" /* PE = 1 */ - " movl %eax, %cr0\n" - /* Now that we are in protected mode jump to a 32 bit code segment. */ - " data32 ljmp $0x10, $biosprotect\n" - "biosprotect: \n" - " .code32 \n" - " movw $0x18, %ax \n" - " mov %ax, %ds \n" - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - " mov %ax, %ss \n" - " lidt idtarg \n" - " call biosint \n" - // back to real mode ... - " ljmp $0x28, $__rms_16bit2\n" - "__rms_16bit2: \n" - " .code16 \n" - /* 16 bit code from here on... */ - /* Load the segment registers w/ properly configured segment - * descriptors. They will retain these configurations (limits, - * writability, etc.) once protected mode is turned off. */ - " mov $0x30, %ax \n" - " mov %ax, %ds \n" - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - " mov %ax, %ss \n" - - /* Turn off protection (bit 0 in CR0) */ - " movl %cr0, %eax \n" - " andl $0xFFFFFFFE, %eax \n" - " movl %eax, %cr0 \n" - - /* Now really going into real mode */ - " ljmp $0, $__rms_real2 \n" - "__rms_real2: \n" - - /* Setup a stack - * FixME: where is esp? */ - " mov $0x0, %ax \n" - " mov %ax, %ss \n" - - /* ebugging for RGM */ - " mov $0x11, %al \n" - " outb %al, $0x80 \n" - - /* Load our 16 it idt */ - " xor %ax, %ax \n" - " mov %ax, %ds \n" - " lidt __myidt \n" - - /* Dump zeros in the other segregs */ - " mov %ax, %es \n" - " mov %ax, %fs \n" - " mov %ax, %gs \n" - " mov $0x40, %ax \n" - " mov %ax, %ds \n" - - /* pop the INT # that you pushed earlier */ - " popl %eax \n" - " pop %gs \n" - " pop %fs \n" - " pop %es \n" - " pop %ds \n" - " popal \n" - " iret \n" - " .code32 \n" - ); -} - -enum { - PCIBIOS = 0x1a, - MEMSIZE = 0x12 -}; - -int pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, - unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, - unsigned long *pecx, unsigned long *peax, unsigned long *pflags); - -int handleint21(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, - unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, - unsigned long *pecx, unsigned long *peax, unsigned long *pflags - ); - -extern void vga_exit(void); - -int biosint(unsigned long intnumber, - unsigned long gsfs, unsigned long dses, - unsigned long edi, unsigned long esi, - unsigned long ebp, unsigned long esp, - unsigned long ebx, unsigned long edx, - unsigned long ecx, unsigned long eax, - unsigned long cs_ip, unsigned short stackflags) -{ - unsigned long ip; - unsigned long cs; - unsigned long flags; - int ret = -1; - - ip = cs_ip & 0xffff; - cs = cs_ip >> 16; - flags = stackflags; - - printk_debug("biosint: INT# 0x%lx\n", intnumber); - printk_debug("biosint: eax 0x%lx ebx 0x%lx ecx 0x%lx edx 0x%lx\n", - eax, ebx, ecx, edx); - printk_debug("biosint: ebp 0x%lx esp 0x%lx edi 0x%lx esi 0x%lx\n", - ebp, esp, edi, esi); - printk_debug("biosint: ip 0x%x cs 0x%x flags 0x%x\n", - ip, cs, flags); - - // cases in a good compiler are just as good as your own tables. - switch (intnumber) { - case 0 ... 15: - // These are not BIOS service, but the CPU-generated exceptions - printk_info("biosint: Oops, exception %u\n", intnumber); - if (esp < 0x1000) { - printk_debug("Stack contents: "); - while (esp < 0x1000) { - printk_debug("0x%04x ", *(unsigned short *) esp); - esp += 2; - } - printk_debug("\n"); - } - printk_debug("biosint: Bailing out\n"); - // "longjmp" - vga_exit(); - break; - - case PCIBIOS: - ret = pcibios( &edi, &esi, &ebp, &esp, - &ebx, &edx, &ecx, &eax, &flags); - break; - case MEMSIZE: - // who cares. - eax = 64 * 1024; - ret = 0; - break; - case 0x15: - ret=handleint21( &edi, &esi, &ebp, &esp, - &ebx, &edx, &ecx, &eax, &flags); - break; - default: - printk_info("BIOSINT: Unsupport int #0x%x\n", - intnumber); - break; - } - if (ret) - flags |= 1; // carry flags - else - flags &= ~1; - stackflags = flags; - return ret; -} - - -void setup_realmode_idt(void) -{ - extern unsigned char idthandle, end_idthandle; - extern unsigned char debughandle, end_debughandle; - - int i; - struct realidt *idts = (struct realidt *) 0; - int codesize = &end_idthandle - &idthandle; - unsigned char *intbyte, *codeptr; - - // for each int, we create a customized little handler - // that just pushes %ax, puts the int # in %al, - // then calls the common interrupt handler. - // this necessitated because intel didn't know much about - // architecture when they did the 8086 (it shows) - // (hmm do they know anymore even now :-) - // obviously you can see I don't really care about memory - // efficiency. If I did I would probe back through the stack - // and get it that way. But that's really disgusting. - for (i = 0; i < 256; i++) { - idts[i].cs = 0; - codeptr = (char*) 4096 + i * codesize; - idts[i].offset = (unsigned) codeptr; - memcpy(codeptr, &idthandle, codesize); - intbyte = codeptr + 3; - *intbyte = i; - } - - // fixed entry points - - // VGA BIOSes tend to hardcode f000:f065 as the previous handler of - // int10. - // calling convention here is the same as INTs, we can reuse - // the int entry code. - codeptr = (char*) 0xff065; - memcpy(codeptr, &idthandle, codesize); - intbyte = codeptr + 3; - *intbyte = 0x42; /* int42 is the relocated int10 */ - - /* debug handler - useful to set a programmable delay between instructions if the - TF bit is set upon call to real mode */ - idts[1].cs = 0; - idts[1].offset = 16384; - memcpy(16384, &debughandle, &end_debughandle - &debughandle); - - -} - - - -enum { - CHECK = 0xb001, - FINDDEV = 0xb102, - READCONFBYTE = 0xb108, - READCONFWORD = 0xb109, - READCONFDWORD = 0xb10a, - WRITECONFBYTE = 0xb10b, - WRITECONFWORD = 0xb10c, - WRITECONFDWORD = 0xb10d -}; - -// errors go in AH. Just set these up so that word assigns -// will work. KISS. -enum { - PCIBIOS_NODEV = 0x8600, - PCIBIOS_BADREG = 0x8700 -}; - -int -pcibios(unsigned long *pedi, unsigned long *pesi, unsigned long *pebp, - unsigned long *pesp, unsigned long *pebx, unsigned long *pedx, - unsigned long *pecx, unsigned long *peax, unsigned long *pflags) -{ - unsigned long edi = *pedi; - unsigned long esi = *pesi; - unsigned long ebp = *pebp; - unsigned long esp = *pesp; - unsigned long ebx = *pebx; - unsigned long edx = *pedx; - unsigned long ecx = *pecx; - unsigned long eax = *peax; - unsigned long flags = *pflags; - unsigned short func = (unsigned short) eax; - int retval = 0; - unsigned short devid, vendorid, devfn; - short devindex; /* Use short to get rid of gabage in upper half of 32-bit register */ - unsigned char bus; - device_t dev; - - switch(func) { - case CHECK: - *pedx = 0x4350; - *pecx = 0x2049; - retval = 0; - break; - case FINDDEV: - { - devid = *pecx; - vendorid = *pedx; - devindex = *pesi; - dev = 0; - while ((dev = dev_find_device(vendorid, devid, dev))) { - if (devindex <= 0) - break; - devindex--; - } - if (dev) { - unsigned short busdevfn; - *peax = 0; - // busnum is an unsigned char; - // devfn is an int, so we mask it off. - busdevfn = (dev->bus->secondary << 8) - | (dev->path.u.pci.devfn & 0xff); - printk_debug("0x%x: return 0x%x\n", func, busdevfn); - *pebx = busdevfn; - retval = 0; - } else { - *peax = PCIBIOS_NODEV; - retval = -1; - } - } - break; - case READCONFDWORD: - case READCONFWORD: - case READCONFBYTE: - case WRITECONFDWORD: - case WRITECONFWORD: - case WRITECONFBYTE: - { - unsigned long dword; - unsigned short word; - unsigned char byte; - unsigned char reg; - - devfn = *pebx & 0xff; - bus = *pebx >> 8; - reg = *pedi; - dev = dev_find_slot(bus, devfn); - if (! dev) { - printk_debug("0x%x: BAD DEVICE bus %d devfn 0x%x\n", func, bus, devfn); - // idiots. the pcibios guys assumed you'd never pass a bad bus/devfn! - *peax = PCIBIOS_BADREG; - retval = -1; - } - switch(func) { - case READCONFBYTE: - byte = pci_read_config8(dev, reg); - *pecx = byte; - break; - case READCONFWORD: - word = pci_read_config16(dev, reg); - *pecx = word; - break; - case READCONFDWORD: - dword = pci_read_config32(dev, reg); - *pecx = dword; - break; - case WRITECONFBYTE: - byte = *pecx; - pci_write_config8(dev, reg, byte); - break; - case WRITECONFWORD: - word = *pecx; - pci_write_config16(dev, reg, word); - break; - case WRITECONFDWORD: - dword = *pecx; - pci_write_config32(dev, reg, dword); - break; - } - - if (retval) - retval = PCIBIOS_BADREG; - printk_debug("0x%x: bus %d devfn 0x%x reg 0x%x val 0x%lx\n", - func, bus, devfn, reg, *pecx); - *peax = 0; - retval = 0; - } - break; - default: - printk_err("UNSUPPORTED PCIBIOS FUNCTION 0x%x\n", func); - break; - } - - return retval; -} - -int handleint21(unsigned long *edi, unsigned long *esi, unsigned long *ebp, - unsigned long *esp, unsigned long *ebx, unsigned long *edx, - unsigned long *ecx, unsigned long *eax, unsigned long *flags) -{ - int res=-1; - switch(*eax&0xffff) - { - case 0x5f19: - break; - case 0x5f18: - *eax=0x5f; - *ebx=0x545; // MCLK = 133, 32M frame buffer, 256 M main memory - *ecx=0x060; - res=0; - break; - case 0x5f00: - *eax = 0x8600; - break; - case 0x5f01: - *eax = 0x5f; - *ecx = (*ecx & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768 - res = 0; - break; - case 0x5f02: - *eax=0x5f; - *ebx= (*ebx & 0xffff0000) | 2; - *ecx= (*ecx & 0xffff0000) | 0x401; // PAL + crt only - *edx= (*edx & 0xffff0000) | 0; // TV Layout - default - res=0; - break; - case 0x5f0f: - *eax=0x860f; - break; - } - return res; -} |