[SeaBIOS] [PATCH] vgabios: Move initialization code to new file vgainit.c.
Kevin O'Connor
kevin at koconnor.net
Tue Dec 3 17:54:02 CET 2013
Move the initialization code out of vgabios.c to a new file to reduce
the size of the vgabios.c file.
Signed-off-by: Kevin O'Connor <kevin at koconnor.net>
---
Makefile | 3 +-
vgasrc/vgabios.c | 154 +------------------------------------------------
vgasrc/vgabios.h | 3 +
vgasrc/vgainit.c | 170 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 176 insertions(+), 154 deletions(-)
create mode 100644 vgasrc/vgainit.c
diff --git a/Makefile b/Makefile
index 59aae99..8a3c9d1 100644
--- a/Makefile
+++ b/Makefile
@@ -202,7 +202,8 @@ $(OUT)bios.bin.elf: $(OUT)rom.o $(OUT)bios.bin.prep
# VGA src files
SRCVGA=src/output.c src/string.c src/hw/pci.c src/hw/serialio.c \
- vgasrc/vgabios.c vgasrc/vgafb.c vgasrc/vgafonts.c vgasrc/vbe.c \
+ vgasrc/vgainit.c vgasrc/vgabios.c vgasrc/vgafb.c \
+ vgasrc/vgafonts.c vgasrc/vbe.c \
vgasrc/stdvga.c vgasrc/stdvgamodes.c vgasrc/stdvgaio.c \
vgasrc/clext.c vgasrc/bochsvga.c vgasrc/geodevga.c
diff --git a/vgasrc/vgabios.c b/vgasrc/vgabios.c
index d93b190..57f1c1f 100644
--- a/vgasrc/vgabios.c
+++ b/vgasrc/vgabios.c
@@ -1,6 +1,6 @@
// VGA bios implementation
//
-// Copyright (C) 2009-2012 Kevin O'Connor <kevin at koconnor.net>
+// Copyright (C) 2009-2013 Kevin O'Connor <kevin at koconnor.net>
// Copyright (C) 2001-2008 the LGPL VGABios developers Team
//
// This file may be distributed under the terms of the GNU LGPLv3 license.
@@ -9,48 +9,13 @@
#include "bregs.h" // struct bregs
#include "clext.h" // clext_1012
#include "config.h" // CONFIG_*
-#include "hw/pci.h" // pci_config_readw
-#include "hw/pci_regs.h" // PCI_VENDOR_ID
#include "output.h" // dprintf
-#include "std/optionrom.h" // struct pci_data
-#include "std/pmm.h" // struct pmmheader
#include "std/vbe.h" // VBE_RETURN_STATUS_FAILED
#include "stdvga.h" // stdvga_set_cursor_shape
#include "string.h" // memset_far
-#include "util.h" // VERSION
#include "vgabios.h" // calc_page_size
#include "vgahw.h" // vgahw_set_mode
-// Standard Video Save Pointer Table
-struct VideoSavePointer_s {
- struct segoff_s videoparam;
- struct segoff_s paramdynamicsave;
- struct segoff_s textcharset;
- struct segoff_s graphcharset;
- struct segoff_s secsavepointer;
- u8 reserved[8];
-} PACKED;
-
-static struct VideoSavePointer_s video_save_pointer_table VAR16;
-
-struct VideoParam_s video_param_table[29] VAR16;
-
-
-/****************************************************************
- * PCI Data
- ****************************************************************/
-
-struct pci_data rom_pci_data VAR16 VISIBLE16 = {
- .signature = PCI_ROM_SIGNATURE,
- .vendor = CONFIG_VGA_VID,
- .device = CONFIG_VGA_DID,
- .dlen = 0x18,
- .class_hi = 0x300,
- .irevision = 1,
- .type = PCIROM_CODETYPE_X86,
- .indicator = 0x80,
-};
-
/****************************************************************
* Helper functions
@@ -1249,120 +1214,3 @@ handle_10(struct bregs *regs)
default: handle_10XX(regs); break;
}
}
-
-
-/****************************************************************
- * VGA post
- ****************************************************************/
-
-static void
-init_bios_area(void)
-{
- // init detected hardware BIOS Area
- // set 80x25 color (not clear from RBIL but usual)
- set_equipment_flags(0x30, 0x20);
-
- // the default char height
- SET_BDA(char_height, 0x10);
-
- // Clear the screen
- SET_BDA(video_ctl, 0x60);
-
- // Set the basic screen we have
- SET_BDA(video_switches, 0xf9);
-
- // Set the basic modeset options
- SET_BDA(modeset_ctl, 0x51);
-
- // Set the default MSR
- SET_BDA(video_msr, 0x09);
-}
-
-u16 ExtraStackSeg VAR16 VISIBLE16;
-
-static void
-allocate_extra_stack(void)
-{
- if (!CONFIG_VGA_ALLOCATE_EXTRA_STACK)
- return;
- void *pmmscan = (void*)BUILD_BIOS_ADDR;
- for (; pmmscan < (void*)BUILD_BIOS_ADDR+BUILD_BIOS_SIZE; pmmscan+=16) {
- struct pmmheader *pmm = pmmscan;
- if (pmm->signature != PMM_SIGNATURE)
- continue;
- if (checksum_far(0, pmm, pmm->length))
- continue;
- struct segoff_s entry = pmm->entry;
- dprintf(1, "Attempting to allocate VGA stack via pmm call to %04x:%04x\n"
- , entry.seg, entry.offset);
- u16 res1, res2;
- asm volatile(
- "pushl %0\n"
- "pushw $(8|1)\n" // Permanent low memory request
- "pushl $0xffffffff\n" // Anonymous handle
- "pushl $" __stringify(CONFIG_VGA_EXTRA_STACK_SIZE) "\n"
- "pushw $0x00\n" // PMM allocation request
- "lcallw *12(%%esp)\n"
- "addl $16, %%esp\n"
- "cli\n"
- "cld\n"
- : "+r" (entry.segoff), "=a" (res1), "=d" (res2) : : "cc", "memory");
- u32 res = res1 | (res2 << 16);
- if (!res || res == PMM_FUNCTION_NOT_SUPPORTED)
- return;
- dprintf(1, "VGA stack allocated at %x\n", res);
- SET_VGA(ExtraStackSeg, res >> 4);
- extern void entry_10_extrastack(void);
- SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10_extrastack));
- return;
- }
-}
-
-int VgaBDF VAR16 = -1;
-int HaveRunInit VAR16;
-
-void VISIBLE16
-vga_post(struct bregs *regs)
-{
- debug_preinit();
- dprintf(1, "Start SeaVGABIOS (version %s)\n", VERSION);
- debug_enter(regs, DEBUG_VGA_POST);
-
- if (CONFIG_VGA_PCI && !GET_GLOBAL(HaveRunInit)) {
- u16 bdf = regs->ax;
- if ((pci_config_readw(bdf, PCI_VENDOR_ID)
- == GET_GLOBAL(rom_pci_data.vendor))
- && (pci_config_readw(bdf, PCI_DEVICE_ID)
- == GET_GLOBAL(rom_pci_data.device)))
- SET_VGA(VgaBDF, bdf);
- }
-
- int ret = vgahw_setup();
- if (ret) {
- dprintf(1, "Failed to initialize VGA hardware. Exiting.\n");
- return;
- }
-
- if (GET_GLOBAL(HaveRunInit))
- return;
-
- init_bios_area();
-
- SET_VGA(video_save_pointer_table.videoparam
- , SEGOFF(get_global_seg(), (u32)video_param_table));
- stdvga_build_video_param();
-
- extern void entry_10(void);
- SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10));
-
- allocate_extra_stack();
-
- SET_VGA(HaveRunInit, 1);
-
- // Fixup checksum
- extern u8 _rom_header_size, _rom_header_checksum;
- SET_VGA(_rom_header_checksum, 0);
- u8 sum = -checksum_far(get_global_seg(), 0,
- GET_GLOBAL(_rom_header_size) * 512);
- SET_VGA(_rom_header_checksum, sum);
-}
diff --git a/vgasrc/vgabios.h b/vgasrc/vgabios.h
index 5adbf4b..800b61f 100644
--- a/vgasrc/vgabios.h
+++ b/vgasrc/vgabios.h
@@ -78,6 +78,9 @@ extern u8 vgafont16alt[];
#define DEBUG_VGA_POST 1
#define DEBUG_VGA_10 3
+// vgainit.c
+extern struct VideoSavePointer_s video_save_pointer_table;
+
// vgabios.c
extern int VgaBDF;
extern int HaveRunInit;
diff --git a/vgasrc/vgainit.c b/vgasrc/vgainit.c
new file mode 100644
index 0000000..7b01e03
--- /dev/null
+++ b/vgasrc/vgainit.c
@@ -0,0 +1,170 @@
+// Main VGA bios initialization
+//
+// Copyright (C) 2009-2013 Kevin O'Connor <kevin at koconnor.net>
+// Copyright (C) 2001-2008 the LGPL VGABios developers Team
+//
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+
+#include "biosvar.h" // SET_BDA
+#include "bregs.h" // struct bregs
+#include "hw/pci.h" // pci_config_readw
+#include "hw/pci_regs.h" // PCI_VENDOR_ID
+#include "output.h" // dprintf
+#include "std/optionrom.h" // struct pci_data
+#include "std/pmm.h" // struct pmmheader
+#include "string.h" // checksum_far
+#include "util.h" // VERSION
+#include "vgabios.h" // struct VideoSavePointer_s
+#include "vgahw.h" // vgahw_setup
+
+// Standard Video Save Pointer Table
+struct VideoSavePointer_s {
+ struct segoff_s videoparam;
+ struct segoff_s paramdynamicsave;
+ struct segoff_s textcharset;
+ struct segoff_s graphcharset;
+ struct segoff_s secsavepointer;
+ u8 reserved[8];
+} PACKED;
+
+struct VideoSavePointer_s video_save_pointer_table VAR16;
+
+struct VideoParam_s video_param_table[29] VAR16;
+
+
+/****************************************************************
+ * PCI Data
+ ****************************************************************/
+
+struct pci_data rom_pci_data VAR16 VISIBLE16 = {
+ .signature = PCI_ROM_SIGNATURE,
+ .vendor = CONFIG_VGA_VID,
+ .device = CONFIG_VGA_DID,
+ .dlen = 0x18,
+ .class_hi = 0x300,
+ .irevision = 1,
+ .type = PCIROM_CODETYPE_X86,
+ .indicator = 0x80,
+};
+
+
+/****************************************************************
+ * PMM call and extra stack setup
+ ****************************************************************/
+
+u16 ExtraStackSeg VAR16 VISIBLE16;
+
+static void
+allocate_extra_stack(void)
+{
+ if (!CONFIG_VGA_ALLOCATE_EXTRA_STACK)
+ return;
+ void *pmmscan = (void*)BUILD_BIOS_ADDR;
+ for (; pmmscan < (void*)BUILD_BIOS_ADDR+BUILD_BIOS_SIZE; pmmscan+=16) {
+ struct pmmheader *pmm = pmmscan;
+ if (pmm->signature != PMM_SIGNATURE)
+ continue;
+ if (checksum_far(0, pmm, pmm->length))
+ continue;
+ struct segoff_s entry = pmm->entry;
+ dprintf(1, "Attempting to allocate VGA stack via pmm call to %04x:%04x\n"
+ , entry.seg, entry.offset);
+ u16 res1, res2;
+ asm volatile(
+ "pushl %0\n"
+ "pushw $(8|1)\n" // Permanent low memory request
+ "pushl $0xffffffff\n" // Anonymous handle
+ "pushl $" __stringify(CONFIG_VGA_EXTRA_STACK_SIZE) "\n"
+ "pushw $0x00\n" // PMM allocation request
+ "lcallw *12(%%esp)\n"
+ "addl $16, %%esp\n"
+ "cli\n"
+ "cld\n"
+ : "+r" (entry.segoff), "=a" (res1), "=d" (res2) : : "cc", "memory");
+ u32 res = res1 | (res2 << 16);
+ if (!res || res == PMM_FUNCTION_NOT_SUPPORTED)
+ return;
+ dprintf(1, "VGA stack allocated at %x\n", res);
+ SET_VGA(ExtraStackSeg, res >> 4);
+ extern void entry_10_extrastack(void);
+ SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10_extrastack));
+ return;
+ }
+}
+
+
+/****************************************************************
+ * VGA post
+ ****************************************************************/
+
+static void
+init_bios_area(void)
+{
+ // init detected hardware BIOS Area
+ // set 80x25 color (not clear from RBIL but usual)
+ set_equipment_flags(0x30, 0x20);
+
+ // the default char height
+ SET_BDA(char_height, 0x10);
+
+ // Clear the screen
+ SET_BDA(video_ctl, 0x60);
+
+ // Set the basic screen we have
+ SET_BDA(video_switches, 0xf9);
+
+ // Set the basic modeset options
+ SET_BDA(modeset_ctl, 0x51);
+
+ // Set the default MSR
+ SET_BDA(video_msr, 0x09);
+}
+
+int VgaBDF VAR16 = -1;
+int HaveRunInit VAR16;
+
+void VISIBLE16
+vga_post(struct bregs *regs)
+{
+ debug_preinit();
+ dprintf(1, "Start SeaVGABIOS (version %s)\n", VERSION);
+ debug_enter(regs, DEBUG_VGA_POST);
+
+ if (CONFIG_VGA_PCI && !GET_GLOBAL(HaveRunInit)) {
+ u16 bdf = regs->ax;
+ if ((pci_config_readw(bdf, PCI_VENDOR_ID)
+ == GET_GLOBAL(rom_pci_data.vendor))
+ && (pci_config_readw(bdf, PCI_DEVICE_ID)
+ == GET_GLOBAL(rom_pci_data.device)))
+ SET_VGA(VgaBDF, bdf);
+ }
+
+ int ret = vgahw_setup();
+ if (ret) {
+ dprintf(1, "Failed to initialize VGA hardware. Exiting.\n");
+ return;
+ }
+
+ if (GET_GLOBAL(HaveRunInit))
+ return;
+
+ init_bios_area();
+
+ SET_VGA(video_save_pointer_table.videoparam
+ , SEGOFF(get_global_seg(), (u32)video_param_table));
+ stdvga_build_video_param();
+
+ extern void entry_10(void);
+ SET_IVT(0x10, SEGOFF(get_global_seg(), (u32)entry_10));
+
+ allocate_extra_stack();
+
+ SET_VGA(HaveRunInit, 1);
+
+ // Fixup checksum
+ extern u8 _rom_header_size, _rom_header_checksum;
+ SET_VGA(_rom_header_checksum, 0);
+ u8 sum = -checksum_far(get_global_seg(), 0,
+ GET_GLOBAL(_rom_header_size) * 512);
+ SET_VGA(_rom_header_checksum, sum);
+}
--
1.8.3.1
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