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-rw-r--r--src/mainboard/via/epia-m/Config.lb20
-rw-r--r--src/mainboard/via/epia-m/Options.lb11
-rw-r--r--src/mainboard/via/epia-m/auto.c12
-rw-r--r--src/mainboard/via/epia-m/dsdt.asl256
-rw-r--r--src/mainboard/via/epia-m/dsdt.c142
-rw-r--r--src/mainboard/via/epia-m/fadt.c4
-rw-r--r--src/mainboard/via/epia-m/failover.c2
-rw-r--r--src/mainboard/via/epia-m/mainboard.c2
-rw-r--r--src/mainboard/via/epia-m/vgabios.c861
-rw-r--r--src/mainboard/via/epia-m/vgachip.h10
10 files changed, 1299 insertions, 21 deletions
diff --git a/src/mainboard/via/epia-m/Config.lb b/src/mainboard/via/epia-m/Config.lb
index decbd0e3b1..6dc4b3d79a 100644
--- a/src/mainboard/via/epia-m/Config.lb
+++ b/src/mainboard/via/epia-m/Config.lb
@@ -45,6 +45,7 @@ arch i386 end
driver mainboard.o
if HAVE_PIRQ_TABLE object irq_tables.o end
#object reset.o
+object vgabios.o
if HAVE_ACPI_TABLES
object fadt.o
@@ -133,11 +134,6 @@ config chip.h
chip northbridge/via/vt8623
device pci_domain 0 on
chip southbridge/via/vt8235
- register "enable_usb" = "0"
- register "enable_native_ide" = "0"
- register "enable_com_ports" = "1"
- register "enable_keyboard" = "0"
- register "enable_nvram" = "1"
device pci 10.0 on end # USB 1.1
device pci 10.1 on end # USB 1.1
@@ -151,7 +147,7 @@ chip northbridge/via/vt8623
irq 0x70 = 6
drq 0x74 = 2
end
- device pnp 2e.1 off # Parallel Port
+ device pnp 2e.1 on # Parallel Port
io 0x60 = 0x378
irq 0x70 = 7
drq 0x74 = 3
@@ -178,10 +174,16 @@ chip northbridge/via/vt8623
device pci 12.0 on end # Ethernet
end
# This is on the EPIA MII, not the M.
-# chip southbridge/ricoh/rl5c476
-# end
+ chip southbridge/ricoh/rl5c476
+ register "enable_cf" = "1"
+ device pci 0a.0 on end
+ device pci 0a.1 on end
+ end
end
- chip cpu/via/model_centaur
+ device apic_cluster 0 on
+ chip cpu/via/model_centaur
+ device apic 0 on end
+ end
end
end
diff --git a/src/mainboard/via/epia-m/Options.lb b/src/mainboard/via/epia-m/Options.lb
index 4184236c5c..6c3193e78d 100644
--- a/src/mainboard/via/epia-m/Options.lb
+++ b/src/mainboard/via/epia-m/Options.lb
@@ -36,6 +36,8 @@ uses DEFAULT_CONSOLE_LOGLEVEL
uses MAXIMUM_CONSOLE_LOGLEVEL
uses CONFIG_CONSOLE_SERIAL8250
uses CONFIG_UDELAY_TSC
+uses CONFIG_PCI_ROM_RUN
+uses CONFIG_CONSOLE_VGA
## ROM_SIZE is the size of boot ROM that this board will use.
default ROM_SIZE = 256*1024
@@ -43,6 +45,8 @@ default ROM_SIZE = 256*1024
###
### Build options
###
+default CONFIG_PCI_ROM_RUN=0
+default CONFIG_CONSOLE_VGA=0
##
## Build code for the fallback boot
@@ -70,6 +74,13 @@ default HAVE_HARD_RESET=1
default HAVE_PIRQ_TABLE=1
default IRQ_SLOT_COUNT=5
+
+##
+## Build code to load acpi tables
+##
+default HAVE_ACPI_TABLES=1
+
+
##
## Build code to export a CMOS option table
##
diff --git a/src/mainboard/via/epia-m/auto.c b/src/mainboard/via/epia-m/auto.c
index 7d08de87bb..c69b7bf101 100644
--- a/src/mainboard/via/epia-m/auto.c
+++ b/src/mainboard/via/epia-m/auto.c
@@ -68,7 +68,7 @@ static void enable_mainboard_devices(void)
die("Southbridge not found!!!\n");
}
pci_write_config8(dev, 0x50, 0x80);
- pci_write_config8(dev, 0x51, 0x1F);
+ pci_write_config8(dev, 0x51, 0x1f);
#if 0
// This early setup switches IDE into compatibility mode before PCI gets
// // a chance to assign I/Os
@@ -141,14 +141,8 @@ static void main(unsigned long bist)
print_debug(" Enabling shadow ram\r\n");
enable_shadow_ram();
- /*
- memreset_setup();
- this is way more generic than we need.
- sdram_initialize(sizeof(cpu)/sizeof(cpu[0]), cpu);
- */
- sdram_set_registers((const struct mem_controller *) 0);
- sdram_set_spd_registers((const struct mem_controller *) 0);
- sdram_enable(0, (const struct mem_controller *) 0);
+
+ ddr_ram_setup((const struct mem_controller *)0);
/* Check all of memory */
#if 0
diff --git a/src/mainboard/via/epia-m/dsdt.asl b/src/mainboard/via/epia-m/dsdt.asl
new file mode 100644
index 0000000000..2fcb77ed3a
--- /dev/null
+++ b/src/mainboard/via/epia-m/dsdt.asl
@@ -0,0 +1,256 @@
+/*
+ * Minimalist ACPI DSDT table for EPIA-M / MII
+ * (C) Copyright 2004 Nick Barker <Nick.Barker9@btinternet.com>
+ *
+ *
+ */
+
+DefinitionBlock ("DSDT.aml", "DSDT", 1, "LXBIOS", "LXB-DSDT", 1)
+{
+ /*
+ * Define the main processor
+ */
+ Scope (\_PR)
+ {
+ Processor (\_PR.CPU0, 0x00, 0x00000410, 0x06) {}
+ }
+
+ /* For now only define 2 power states:
+ * - S0 which is fully on
+ * - S5 which is soft off
+ * any others would involve declaring the wake up methods
+ */
+ Name (\_S0, Package () {0x00, 0x00, 0x00, 0x00 })
+ Name (\_S5, Package () {0x02, 0x02, 0x00, 0x00 })
+
+ /* Root of the bus hierarchy */
+ Scope (\_SB)
+ {
+ /* Define how interrupt Link A is plumbed in */
+ Device (LNKA)
+ {
+ Name (_HID, EisaId ("PNP0C0F"))
+ Name (_UID, 0x01)
+ /* Status - always return ready */
+ Method (_STA, 0, NotSerialized)
+ {
+ Return (0x0B)
+ }
+ /* Current Resources - return irq set up in BIOS */
+ Method (_CRS, 0, NotSerialized)
+ {
+ Name (BUFF, ResourceTemplate ()
+ {
+ IRQ (Level, ActiveLow, Shared) {5}
+ })
+ Return (BUFF)
+ }
+ /* Possible Resources - return the range of irqs
+ * we are using for PCI - only here to keep Linux ACPI
+ * happy
+ */
+ Method (_PRS, 0, NotSerialized)
+ {
+ Name (BUFF, ResourceTemplate ()
+ {
+ IRQ (Level, ActiveLow, Shared) {5,9,10}
+ })
+ Return (BUFF)
+ }
+ /* Set Resources - dummy function to keep Linux ACPI happy
+ * Linux is more than happy not to tinker with irq
+ * assignments as long as the CRS and STA functions
+ * return good values
+ */
+ Method (_SRS, 1, NotSerialized ) {}
+ /* Disable - dummy function to keep Linux ACPI happy */
+ Method (_DIS, 0, NotSerialized ) {}
+
+ } // End of LNKA
+
+ /* Define how interrupt Link B is plumbed in */
+ Device (LNKB)
+ {
+ Name (_HID, EisaId ("PNP0C0F"))
+ Name (_UID, 0x02)
+ /* Status - always return ready */
+ Method (_STA, 0, NotSerialized)
+ {
+ Return (0x0B)
+ }
+ /* Current Resources - return irq set up in BIOS */
+ Method (_CRS, 0, NotSerialized)
+ {
+ Name (BUFF, ResourceTemplate ()
+ {
+ IRQ (Level, ActiveLow, Shared) {9}
+ })
+ Return (BUFF)
+ }
+ /* Possible Resources - return the range of irqs
+ * we are using for PCI - only here to keep Linux ACPI
+ * happy
+ */
+ Method (_PRS, 0, NotSerialized)
+ {
+ Name (BUFF, ResourceTemplate ()
+ {
+ IRQ (Level, ActiveLow, Shared) {5,9,10}
+ })
+ Return (BUFF)
+ }
+ /* Set Resources - dummy function to keep Linux ACPI happy
+ * Linux is more than happy not to tinker with irq
+ * assignments as long as the CRS and STA functions
+ * return good values
+ */
+ Method (_SRS, 1, NotSerialized ) {}
+ /* Disable - dummy function to keep Linux ACPI happy */
+ Method (_DIS, 0, NotSerialized ) {}
+
+ } // End of LNKB
+
+ /* Define how interrupt Link C is plumbed in */
+ Device (LNKC)
+ {
+ Name (_HID, EisaId ("PNP0C0F"))
+ Name (_UID, 0x03)
+ /* Status - always return ready */
+ Method (_STA, 0, NotSerialized)
+ {
+ Return (0x0B)
+ }
+ /* Current Resources - return irq set up in BIOS */
+ Method (_CRS, 0, NotSerialized)
+ {
+ Name (BUFF, ResourceTemplate ()
+ {
+ IRQ (Level, ActiveLow, Shared) {9}
+ })
+ Return (BUFF)
+ }
+ /* Possible Resources - return the range of irqs
+ * we are using for PCI - only here to keep Linux ACPI
+ * happy
+ */
+ Method (_PRS, 0, NotSerialized)
+ {
+ Name (BUFF, ResourceTemplate ()
+ {
+ IRQ (Level, ActiveLow, Shared) {5,9,10}
+ })
+ Return (BUFF)
+ }
+ /* Set Resources - dummy function to keep Linux ACPI happy
+ * Linux is more than happy not to tinker with irq
+ * assignments as long as the CRS and STA functions
+ * return good values
+ */
+ Method (_SRS, 1, NotSerialized ) {}
+ /* Disable - dummy function to keep Linux ACPI happy */
+ Method (_DIS, 0, NotSerialized ) {}
+
+ } // End of LNKC
+
+ /* Define how interrupt Link D is plumbed in */
+ Device (LNKD)
+ {
+ Name (_HID, EisaId ("PNP0C0F"))
+ Name (_UID, 0x04)
+ /* Status - always return ready */
+ Method (_STA, 0, NotSerialized)
+ {
+ Return (0x0B)
+ }
+ /* Current Resources - return irq set up in BIOS */
+ Method (_CRS, 0, NotSerialized)
+ {
+ Name (BUFF, ResourceTemplate ()
+ {
+ IRQ (Level, ActiveLow, Shared) {5}
+ })
+ Return (BUFF)
+ }
+ /* Possible Resources - return the range of irqs
+ * we are using for PCI - only here to keep Linux ACPI
+ * happy
+ */
+ Method (_PRS, 0, NotSerialized)
+ {
+ Name (BUFF, ResourceTemplate ()
+ {
+ IRQ (Level, ActiveLow, Shared) {5,9,10}
+ })
+ Return (BUFF)
+ }
+ /* Set Resources - dummy function to keep Linux ACPI happy
+ * Linux is more than happy not to tinker with irq
+ * assignments as long as the CRS and STA functions
+ * return good values
+ */
+ Method (_SRS, 1, NotSerialized ) {}
+ /* Disable - dummy function to keep Linux ACPI happy */
+ Method (_DIS, 0, NotSerialized ) {}
+
+ } // End of LNKD
+
+
+ /* top PCI device */
+ Device (PCI0)
+ {
+ Name (_HID, EisaId ("PNP0A03"))
+ Name (_ADR, 0x00)
+ Name (_UID, 0x00)
+ Name (_BBN, 0x00)
+
+ /* PCI Routing Table */
+ Name (_PRT, Package () {
+ Package () {0x000AFFFF, 0x00, LNKD, 0x00}, // Cardbus Link D
+ Package () {0x000AFFFF, 0x01, LNKA, 0x00}, // Cardbus Link A
+ Package () {0x000AFFFF, 0x02, LNKB, 0x00}, // Cardbus Link B
+ Package () {0x000AFFFF, 0x03, LNKC, 0x00}, // Cardbus Link C
+
+ Package () {0x000DFFFF, 0x00, LNKB, 0x00}, // Firewire Link B
+ Package () {0x000DFFFF, 0x01, LNKC, 0x00}, // Firewire Link C
+ Package () {0x000DFFFF, 0x02, LNKD, 0x00}, // Firewire Linc D
+ Package () {0x000DFFFF, 0x03, LNKA, 0x00}, // Firewire Link A
+
+ Package () {0x0010FFFF, 0x00, LNKA, 0x00}, // USB Link A
+ Package () {0x0010FFFF, 0x01, LNKB, 0x00}, // USB Link B
+ Package () {0x0010FFFF, 0x02, LNKC, 0x00}, // USB Link C
+ Package () {0x0010FFFF, 0x03, LNKD, 0x00}, // USB Link D
+
+ Package () {0x0011FFFF, 0x00, LNKA, 0x00}, // vt8623 Link A
+ Package () {0x0011FFFF, 0x01, LNKB, 0x00}, // vt8623 Link B
+ Package () {0x0011FFFF, 0x02, LNKC, 0x00}, // vt8623 Link C
+ Package () {0x0011FFFF, 0x03, LNKD, 0x00}, // vt8623 Link D
+
+ Package () {0x0012FFFF, 0x00, LNKA, 0x00}, // LAN Link A
+ Package () {0x0012FFFF, 0x01, LNKB, 0x00}, // LAN Link B
+ Package () {0x0012FFFF, 0x02, LNKC, 0x00}, // LAN Link C
+ Package () {0x0012FFFF, 0x03, LNKD, 0x00}, // LAN Link D
+
+ Package () {0x0013FFFF, 0x00, LNKA, 0x00}, // Riser slot LinkA
+ Package () {0x0013FFFF, 0x01, LNKB, 0x00}, // Riser slot LinkB
+ Package () {0x0013FFFF, 0x02, LNKC, 0x00}, // Riser slot LinkC
+ Package () {0x0013FFFF, 0x03, LNKD, 0x00}, // Riser slot LinkD
+
+ Package () {0x0014FFFF, 0x00, LNKB, 0x00}, // Slot 1, Link B
+ Package () {0x0014FFFF, 0x01, LNKC, 0x00}, // Slot 1, Link C
+ Package () {0x0014FFFF, 0x02, LNKD, 0x00}, // Slot 1, Link D
+ Package () {0x0014FFFF, 0x03, LNKA, 0x00}, // Slot 1, Link A
+
+ Package () {0x0001FFFF, 0x00, LNKA, 0x00}, // VGA Link A
+ Package () {0x0001FFFF, 0x01, LNKB, 0x00}, // VGA Link B
+ Package () {0x0001FFFF, 0x02, LNKC, 0x00}, // VGA Link C
+ Package () {0x0001FFFF, 0x03, LNKD, 0x00} // VGA Link D
+
+ })
+
+
+ } // End of PCI0
+
+ } // End of _SB
+
+} // End of Definition Block
+
diff --git a/src/mainboard/via/epia-m/dsdt.c b/src/mainboard/via/epia-m/dsdt.c
new file mode 100644
index 0000000000..62b0f3dab0
--- /dev/null
+++ b/src/mainboard/via/epia-m/dsdt.c
@@ -0,0 +1,142 @@
+/*
+ *
+ * Intel ACPI Component Architecture
+ * ASL Optimizing Compiler / AML Disassembler version 20040715 [Aug 16 2004]
+ * Copyright (C) 2000 - 2004 Intel Corporation
+ * Supports ACPI Specification Revision 2.0c
+ *
+ * Compilation of "dsdt.asl" - Thu Oct 27 09:25:57 2005
+ *
+ * C source code output
+ *
+ */
+unsigned char AmlCode[] =
+{
+ 0x44,0x53,0x44,0x54,0xF0,0x03,0x00,0x00, /* 00000000 "DSDT...." */
+ 0x01,0x11,0x4C,0x58,0x42,0x49,0x4F,0x53, /* 00000008 "..LXBIOS" */
+ 0x4C,0x58,0x42,0x2D,0x44,0x53,0x44,0x54, /* 00000010 "LXB-DSDT" */
+ 0x01,0x00,0x00,0x00,0x49,0x4E,0x54,0x4C, /* 00000018 "....INTL" */
+ 0x15,0x07,0x04,0x20,0x10,0x12,0x5F,0x50, /* 00000020 "... .._P" */
+ 0x52,0x5F,0x5B,0x83,0x0B,0x43,0x50,0x55, /* 00000028 "R_[..CPU" */
+ 0x30,0x00,0x10,0x04,0x00,0x00,0x06,0x08, /* 00000030 "0......." */
+ 0x5F,0x53,0x30,0x5F,0x12,0x06,0x04,0x00, /* 00000038 "_S0_...." */
+ 0x00,0x00,0x00,0x08,0x5F,0x53,0x35,0x5F, /* 00000040 "...._S5_" */
+ 0x12,0x08,0x04,0x0A,0x02,0x0A,0x02,0x00, /* 00000048 "........" */
+ 0x00,0x10,0x4E,0x39,0x5F,0x53,0x42,0x5F, /* 00000050 "..N9_SB_" */
+ 0x5B,0x82,0x44,0x06,0x4C,0x4E,0x4B,0x41, /* 00000058 "[.D.LNKA" */
+ 0x08,0x5F,0x48,0x49,0x44,0x0C,0x41,0xD0, /* 00000060 "._HID.A." */
+ 0x0C,0x0F,0x08,0x5F,0x55,0x49,0x44,0x01, /* 00000068 "..._UID." */
+ 0x14,0x09,0x5F,0x53,0x54,0x41,0x00,0xA4, /* 00000070 ".._STA.." */
+ 0x0A,0x0B,0x14,0x1A,0x5F,0x43,0x52,0x53, /* 00000078 "...._CRS" */
+ 0x00,0x08,0x42,0x55,0x46,0x46,0x11,0x09, /* 00000080 "..BUFF.." */
+ 0x0A,0x06,0x23,0x20,0x00,0x18,0x79,0x00, /* 00000088 "..# ..y." */
+ 0xA4,0x42,0x55,0x46,0x46,0x14,0x1A,0x5F, /* 00000090 ".BUFF.._" */
+ 0x50,0x52,0x53,0x00,0x08,0x42,0x55,0x46, /* 00000098 "PRS..BUF" */
+ 0x46,0x11,0x09,0x0A,0x06,0x23,0x20,0x06, /* 000000A0 "F....# ." */
+ 0x18,0x79,0x00,0xA4,0x42,0x55,0x46,0x46, /* 000000A8 ".y..BUFF" */
+ 0x14,0x06,0x5F,0x53,0x52,0x53,0x01,0x14, /* 000000B0 ".._SRS.." */
+ 0x06,0x5F,0x44,0x49,0x53,0x00,0x5B,0x82, /* 000000B8 "._DIS.[." */
+ 0x45,0x06,0x4C,0x4E,0x4B,0x42,0x08,0x5F, /* 000000C0 "E.LNKB._" */
+ 0x48,0x49,0x44,0x0C,0x41,0xD0,0x0C,0x0F, /* 000000C8 "HID.A..." */
+ 0x08,0x5F,0x55,0x49,0x44,0x0A,0x02,0x14, /* 000000D0 "._UID..." */
+ 0x09,0x5F,0x53,0x54,0x41,0x00,0xA4,0x0A, /* 000000D8 "._STA..." */
+ 0x0B,0x14,0x1A,0x5F,0x43,0x52,0x53,0x00, /* 000000E0 "..._CRS." */
+ 0x08,0x42,0x55,0x46,0x46,0x11,0x09,0x0A, /* 000000E8 ".BUFF..." */
+ 0x06,0x23,0x00,0x02,0x18,0x79,0x00,0xA4, /* 000000F0 ".#...y.." */
+ 0x42,0x55,0x46,0x46,0x14,0x1A,0x5F,0x50, /* 000000F8 "BUFF.._P" */
+ 0x52,0x53,0x00,0x08,0x42,0x55,0x46,0x46, /* 00000100 "RS..BUFF" */
+ 0x11,0x09,0x0A,0x06,0x23,0x20,0x06,0x18, /* 00000108 "....# .." */
+ 0x79,0x00,0xA4,0x42,0x55,0x46,0x46,0x14, /* 00000110 "y..BUFF." */
+ 0x06,0x5F,0x53,0x52,0x53,0x01,0x14,0x06, /* 00000118 "._SRS..." */
+ 0x5F,0x44,0x49,0x53,0x00,0x5B,0x82,0x45, /* 00000120 "_DIS.[.E" */
+ 0x06,0x4C,0x4E,0x4B,0x43,0x08,0x5F,0x48, /* 00000128 ".LNKC._H" */
+ 0x49,0x44,0x0C,0x41,0xD0,0x0C,0x0F,0x08, /* 00000130 "ID.A...." */
+ 0x5F,0x55,0x49,0x44,0x0A,0x03,0x14,0x09, /* 00000138 "_UID...." */
+ 0x5F,0x53,0x54,0x41,0x00,0xA4,0x0A,0x0B, /* 00000140 "_STA...." */
+ 0x14,0x1A,0x5F,0x43,0x52,0x53,0x00,0x08, /* 00000148 ".._CRS.." */
+ 0x42,0x55,0x46,0x46,0x11,0x09,0x0A,0x06, /* 00000150 "BUFF...." */
+ 0x23,0x00,0x02,0x18,0x79,0x00,0xA4,0x42, /* 00000158 "#...y..B" */
+ 0x55,0x46,0x46,0x14,0x1A,0x5F,0x50,0x52, /* 00000160 "UFF.._PR" */
+ 0x53,0x00,0x08,0x42,0x55,0x46,0x46,0x11, /* 00000168 "S..BUFF." */
+ 0x09,0x0A,0x06,0x23,0x20,0x06,0x18,0x79, /* 00000170 "...# ..y" */
+ 0x00,0xA4,0x42,0x55,0x46,0x46,0x14,0x06, /* 00000178 "..BUFF.." */
+ 0x5F,0x53,0x52,0x53,0x01,0x14,0x06,0x5F, /* 00000180 "_SRS..._" */
+ 0x44,0x49,0x53,0x00,0x5B,0x82,0x45,0x06, /* 00000188 "DIS.[.E." */
+ 0x4C,0x4E,0x4B,0x44,0x08,0x5F,0x48,0x49, /* 00000190 "LNKD._HI" */
+ 0x44,0x0C,0x41,0xD0,0x0C,0x0F,0x08,0x5F, /* 00000198 "D.A...._" */
+ 0x55,0x49,0x44,0x0A,0x04,0x14,0x09,0x5F, /* 000001A0 "UID...._" */
+ 0x53,0x54,0x41,0x00,0xA4,0x0A,0x0B,0x14, /* 000001A8 "STA....." */
+ 0x1A,0x5F,0x43,0x52,0x53,0x00,0x08,0x42, /* 000001B0 "._CRS..B" */
+ 0x55,0x46,0x46,0x11,0x09,0x0A,0x06,0x23, /* 000001B8 "UFF....#" */
+ 0x20,0x00,0x18,0x79,0x00,0xA4,0x42,0x55, /* 000001C0 " ..y..BU" */
+ 0x46,0x46,0x14,0x1A,0x5F,0x50,0x52,0x53, /* 000001C8 "FF.._PRS" */
+ 0x00,0x08,0x42,0x55,0x46,0x46,0x11,0x09, /* 000001D0 "..BUFF.." */
+ 0x0A,0x06,0x23,0x20,0x06,0x18,0x79,0x00, /* 000001D8 "..# ..y." */
+ 0xA4,0x42,0x55,0x46,0x46,0x14,0x06,0x5F, /* 000001E0 ".BUFF.._" */
+ 0x53,0x52,0x53,0x01,0x14,0x06,0x5F,0x44, /* 000001E8 "SRS..._D" */
+ 0x49,0x53,0x00,0x5B,0x82,0x4B,0x1F,0x50, /* 000001F0 "IS.[.K.P" */
+ 0x43,0x49,0x30,0x08,0x5F,0x48,0x49,0x44, /* 000001F8 "CI0._HID" */
+ 0x0C,0x41,0xD0,0x0A,0x03,0x08,0x5F,0x41, /* 00000200 ".A...._A" */
+ 0x44,0x52,0x00,0x08,0x5F,0x55,0x49,0x44, /* 00000208 "DR.._UID" */
+ 0x00,0x08,0x5F,0x42,0x42,0x4E,0x00,0x08, /* 00000210 ".._BBN.." */
+ 0x5F,0x50,0x52,0x54,0x12,0x43,0x1D,0x20, /* 00000218 "_PRT.C. " */
+ 0x12,0x0D,0x04,0x0C,0xFF,0xFF,0x0A,0x00, /* 00000220 "........" */
+ 0x00,0x4C,0x4E,0x4B,0x44,0x00,0x12,0x0D, /* 00000228 ".LNKD..." */
+ 0x04,0x0C,0xFF,0xFF,0x0A,0x00,0x01,0x4C, /* 00000230 ".......L" */
+ 0x4E,0x4B,0x41,0x00,0x12,0x0E,0x04,0x0C, /* 00000238 "NKA....." */
+ 0xFF,0xFF,0x0A,0x00,0x0A,0x02,0x4C,0x4E, /* 00000240 "......LN" */
+ 0x4B,0x42,0x00,0x12,0x0E,0x04,0x0C,0xFF, /* 00000248 "KB......" */
+ 0xFF,0x0A,0x00,0x0A,0x03,0x4C,0x4E,0x4B, /* 00000250 ".....LNK" */
+ 0x43,0x00,0x12,0x0D,0x04,0x0C,0xFF,0xFF, /* 00000258 "C......." */
+ 0x0D,0x00,0x00,0x4C,0x4E,0x4B,0x42,0x00, /* 00000260 "...LNKB." */
+ 0x12,0x0D,0x04,0x0C,0xFF,0xFF,0x0D,0x00, /* 00000268 "........" */
+ 0x01,0x4C,0x4E,0x4B,0x43,0x00,0x12,0x0E, /* 00000270 ".LNKC..." */
+ 0x04,0x0C,0xFF,0xFF,0x0D,0x00,0x0A,0x02, /* 00000278 "........" */
+ 0x4C,0x4E,0x4B,0x44,0x00,0x12,0x0E,0x04, /* 00000280 "LNKD...." */
+ 0x0C,0xFF,0xFF,0x0D,0x00,0x0A,0x03,0x4C, /* 00000288 ".......L" */
+ 0x4E,0x4B,0x41,0x00,0x12,0x0D,0x04,0x0C, /* 00000290 "NKA....." */
+ 0xFF,0xFF,0x10,0x00,0x00,0x4C,0x4E,0x4B, /* 00000298 ".....LNK" */
+ 0x41,0x00,0x12,0x0D,0x04,0x0C,0xFF,0xFF, /* 000002A0 "A......." */
+ 0x10,0x00,0x01,0x4C,0x4E,0x4B,0x42,0x00, /* 000002A8 "...LNKB." */
+ 0x12,0x0E,0x04,0x0C,0xFF,0xFF,0x10,0x00, /* 000002B0 "........" */
+ 0x0A,0x02,0x4C,0x4E,0x4B,0x43,0x00,0x12, /* 000002B8 "..LNKC.." */
+ 0x0E,0x04,0x0C,0xFF,0xFF,0x10,0x00,0x0A, /* 000002C0 "........" */
+ 0x03,0x4C,0x4E,0x4B,0x44,0x00,0x12,0x0D, /* 000002C8 ".LNKD..." */
+ 0x04,0x0C,0xFF,0xFF,0x11,0x00,0x00,0x4C, /* 000002D0 ".......L" */
+ 0x4E,0x4B,0x41,0x00,0x12,0x0D,0x04,0x0C, /* 000002D8 "NKA....." */
+ 0xFF,0xFF,0x11,0x00,0x01,0x4C,0x4E,0x4B, /* 000002E0 ".....LNK" */
+ 0x42,0x00,0x12,0x0E,0x04,0x0C,0xFF,0xFF, /* 000002E8 "B......." */
+ 0x11,0x00,0x0A,0x02,0x4C,0x4E,0x4B,0x43, /* 000002F0 "....LNKC" */
+ 0x00,0x12,0x0E,0x04,0x0C,0xFF,0xFF,0x11, /* 000002F8 "........" */
+ 0x00,0x0A,0x03,0x4C,0x4E,0x4B,0x44,0x00, /* 00000300 "...LNKD." */
+ 0x12,0x0D,0x04,0x0C,0xFF,0xFF,0x12,0x00, /* 00000308 "........" */
+ 0x00,0x4C,0x4E,0x4B,0x41,0x00,0x12,0x0D, /* 00000310 ".LNKA..." */
+ 0x04,0x0C,0xFF,0xFF,0x12,0x00,0x01,0x4C, /* 00000318 ".......L" */
+ 0x4E,0x4B,0x42,0x00,0x12,0x0E,0x04,0x0C, /* 00000320 "NKB....." */
+ 0xFF,0xFF,0x12,0x00,0x0A,0x02,0x4C,0x4E, /* 00000328 "......LN" */
+ 0x4B,0x43,0x00,0x12,0x0E,0x04,0x0C,0xFF, /* 00000330 "KC......" */
+ 0xFF,0x12,0x00,0x0A,0x03,0x4C,0x4E,0x4B, /* 00000338 ".....LNK" */
+ 0x44,0x00,0x12,0x0D,0x04,0x0C,0xFF,0xFF, /* 00000340 "D......." */
+ 0x13,0x00,0x00,0x4C,0x4E,0x4B,0x41,0x00, /* 00000348 "...LNKA." */
+ 0x12,0x0D,0x04,0x0C,0xFF,0xFF,0x13,0x00, /* 00000350 "........" */
+ 0x01,0x4C,0x4E,0x4B,0x42,0x00,0x12,0x0E, /* 00000358 ".LNKB..." */
+ 0x04,0x0C,0xFF,0xFF,0x13,0x00,0x0A,0x02, /* 00000360 "........" */
+ 0x4C,0x4E,0x4B,0x43,0x00,0x12,0x0E,0x04, /* 00000368 "LNKC...." */
+ 0x0C,0xFF,0xFF,0x13,0x00,0x0A,0x03,0x4C, /* 00000370 ".......L" */
+ 0x4E,0x4B,0x44,0x00,0x12,0x0D,0x04,0x0C, /* 00000378 "NKD....." */
+ 0xFF,0xFF,0x14,0x00,0x00,0x4C,0x4E,0x4B, /* 00000380 ".....LNK" */
+ 0x42,0x00,0x12,0x0D,0x04,0x0C,0xFF,0xFF, /* 00000388 "B......." */
+ 0x14,0x00,0x01,0x4C,0x4E,0x4B,0x43,0x00, /* 00000390 "...LNKC." */
+ 0x12,0x0E,0x04,0x0C,0xFF,0xFF,0x14,0x00, /* 00000398 "........" */
+ 0x0A,0x02,0x4C,0x4E,0x4B,0x44,0x00,0x12, /* 000003A0 "..LNKD.." */
+ 0x0E,0x04,0x0C,0xFF,0xFF,0x14,0x00,0x0A, /* 000003A8 "........" */
+ 0x03,0x4C,0x4E,0x4B,0x41,0x00,0x12,0x0D, /* 000003B0 ".LNKA..." */
+ 0x04,0x0C,0xFF,0xFF,0x01,0x00,0x00,0x4C, /* 000003B8 ".......L" */
+ 0x4E,0x4B,0x41,0x00,0x12,0x0D,0x04,0x0C, /* 000003C0 "NKA....." */
+ 0xFF,0xFF,0x01,0x00,0x01,0x4C,0x4E,0x4B, /* 000003C8 ".....LNK" */
+ 0x42,0x00,0x12,0x0E,0x04,0x0C,0xFF,0xFF, /* 000003D0 "B......." */
+ 0x01,0x00,0x0A,0x02,0x4C,0x4E,0x4B,0x43, /* 000003D8 "....LNKC" */
+ 0x00,0x12,0x0E,0x04,0x0C,0xFF,0xFF,0x01, /* 000003E0 "........" */
+ 0x00,0x0A,0x03,0x4C,0x4E,0x4B,0x44,0x00, /* 000003E8 "...LNKD." */
+
+};
diff --git a/src/mainboard/via/epia-m/fadt.c b/src/mainboard/via/epia-m/fadt.c
index 3d9873e7b6..702d556988 100644
--- a/src/mainboard/via/epia-m/fadt.c
+++ b/src/mainboard/via/epia-m/fadt.c
@@ -15,8 +15,8 @@
*
* 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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
*/
diff --git a/src/mainboard/via/epia-m/failover.c b/src/mainboard/via/epia-m/failover.c
index bdcb9eaed2..35317fc7b2 100644
--- a/src/mainboard/via/epia-m/failover.c
+++ b/src/mainboard/via/epia-m/failover.c
@@ -8,6 +8,7 @@
static unsigned long main(unsigned long bist)
{
+#if 0
/* This is the primary cpu how should I boot? */
if (do_normal_boot()) {
goto normal_image;
@@ -28,5 +29,6 @@ static unsigned long main(unsigned long bist)
: /* clobbers */
);
fallback_image:
+#endif
return bist;
}
diff --git a/src/mainboard/via/epia-m/mainboard.c b/src/mainboard/via/epia-m/mainboard.c
index 9eb7b3705b..26e5916f01 100644
--- a/src/mainboard/via/epia-m/mainboard.c
+++ b/src/mainboard/via/epia-m/mainboard.c
@@ -25,7 +25,7 @@ static void vga_fixup(void) {
}
-static void write_protect_vgabios(void)
+void write_protect_vgabios(void)
{
device_t dev;
diff --git a/src/mainboard/via/epia-m/vgabios.c b/src/mainboard/via/epia-m/vgabios.c
new file mode 100644
index 0000000000..67620eaa2e
--- /dev/null
+++ b/src/mainboard/via/epia-m/vgabios.c
@@ -0,0 +1,861 @@
+#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 <printk.h>
+#include <string.h>
+#include "vgachip.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 Linuxbios
+ (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\t"
+ ".word gdt_limit \n\t"
+ ".long gdt \n\t"
+
+ /* compute the table limit */
+ "__mygdt_limit = __mygdt_end - __mygdt - 1 \n\t"
+
+ "__mygdtaddr: \n\t"
+ ".word __mygdt_limit \n\t"
+ ".long __mygdt \n\t"
+
+
+ "__mygdt: \n\t"
+ /* selgdt 0, unused */
+ ".word 0x0000, 0x0000 \n\t"
+ ".byte 0x00, 0x00, 0x00, 0x00 \n\t"
+
+ /* selgdt 8, unused */
+ ".word 0x0000, 0x0000 \n\t"
+ ".byte 0x00, 0x00, 0x00, 0x00 \n\t"
+
+ /* selgdt 0x10, flat code segment */
+ ".word 0xffff, 0x0000 \n\t"
+ ".byte 0x00, 0x9b, 0xcf, 0x00 \n\t"
+
+ /* selgdt 0x18, flat data segment */
+ ".word 0xffff, 0x0000 \n\t"
+ ".byte 0x00, 0x93, 0xcf, 0x00 \n\t"
+
+ /* selgdt 0x20, unused */
+ ".word 0x0000, 0x0000 \n\t"
+ ".byte 0x00, 0x00, 0x00, 0x00 \n\t"
+
+ /*selgdt 0x28 16-bit 64k code at 0x00000000 */
+ ".word 0xffff, 0x0000 \n\t"
+ ".byte 0, 0x9a, 0, 0 \n\t"
+
+ /* selgdt 0x30 16-bit 64k data at 0x00000000 */
+ ".word 0xffff, 0x0000 \n\t"
+ ".byte 0, 0x92, 0, 0 \n\t"
+
+ "__mygdt_end: \n\t"
+);
+
+/* Declare a pointer to where our idt is going to be i.e. at mem zero */
+__asm__ (
+ "__myidt: \n"
+ " .word 1023 \n"
+ " .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\t"
+
+ /* 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"
+ /* go run the code */
+ " .byte 0x9a, 0x03, 0, 0, 0xc0 \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\t"
+
+ /* 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 $0x8003,%bx \n"
+ " movw $1, %cx \n"
+ " movw $0, %dx \n"
+ " movw $0, %di \n"
+ " .byte 0xcd, 0x10 \n"
+ " movb $0x55, %al\noutb %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 = 0xfffc0000;
+ 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 linuxbios,
+// 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 linuxbios 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"
+ //"andl $0x7FFAFFD1, %eax\n" /* PG,AM,WP,NE,TS,EM,MP = 0 */
+ //"orl $0x60000001, %eax\n" /* CD, NW, PE = 1 */
+ "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 */
+ " mov $0x0, %ax \n"
+ " mov %ax, %ss \n"
+ /* ebugging for RGM */
+ " mov $0x11, %al \n"
+ " outb %al, $0x80\n"
+ " xor %ax, %ax \n"
+ " mov %ax, %ds \n"
+ " lidt __myidt \n"
+ " 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: # 0x%lx, eax 0x%lx ebx 0x%lx ecx 0x%lx edx 0x%lx\n",
+ intnumber, 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;
+}
diff --git a/src/mainboard/via/epia-m/vgachip.h b/src/mainboard/via/epia-m/vgachip.h
new file mode 100644
index 0000000000..d43788cd66
--- /dev/null
+++ b/src/mainboard/via/epia-m/vgachip.h
@@ -0,0 +1,10 @@
+#ifndef _PC80_VGABIOS
+#define _PC80_VGABIOS
+
+extern struct chip_control pc80_vgabios_control;
+
+struct pc80_vgabios_config {
+ int nothing;
+};
+
+#endif /* _PC80_VGABIOS */