Index: kernel/arch/amd64/Makefile.inc =================================================================== --- kernel/arch/amd64/Makefile.inc (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/amd64/Makefile.inc (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -76,4 +76,10 @@ DEFS += -DCONFIG_I8042 +## Compile with EGA support +# + +CONFIG_EGA = y +DEFS += -DCONFIG_EGA + ## Accepted configuration directives # @@ -97,5 +103,4 @@ arch/$(ARCH)/src/context.S \ arch/$(ARCH)/src/ddi/ddi.c \ - arch/$(ARCH)/src/drivers/ega.c \ arch/$(ARCH)/src/drivers/vesa.c \ arch/$(ARCH)/src/drivers/i8254.c \ Index: kernel/arch/amd64/include/types.h =================================================================== --- kernel/arch/amd64/include/types.h (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/amd64/include/types.h (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -58,4 +58,6 @@ typedef int64_t native_t; +typedef uintptr_t ioport_t; + /**< Formats for uintptr_t, size_t, count_t and index_t */ #define PRIp "llx" Index: kernel/arch/amd64/src/amd64.c =================================================================== --- kernel/arch/amd64/src/amd64.c (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/amd64/src/amd64.c (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -41,4 +41,5 @@ #include #include +#include #include #include @@ -140,5 +141,5 @@ else #endif - ega_init(); /* video */ + ega_init(EGA_BASE, EGA_VIDEORAM); /* video */ /* Enable debugger */ Index: kernel/arch/ia32/Makefile.inc =================================================================== --- kernel/arch/ia32/Makefile.inc (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia32/Makefile.inc (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -111,4 +111,10 @@ DEFS += -DCONFIG_I8042 +## Compile with EGA support +# + +CONFIG_EGA = y +DEFS += -DCONFIG_EGA + ## Accepted configuration directives # @@ -156,5 +162,4 @@ arch/$(ARCH)/src/drivers/i8254.c \ arch/$(ARCH)/src/drivers/i8259.c \ - arch/$(ARCH)/src/drivers/ega.c \ arch/$(ARCH)/src/drivers/vesa.c \ arch/$(ARCH)/src/boot/boot.S \ Index: kernel/arch/ia32/include/drivers/ega.h =================================================================== --- kernel/arch/ia32/include/drivers/ega.h (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia32/include/drivers/ega.h (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -1,4 +1,4 @@ /* - * Copyright (c) 2001-2004 Jakub Jermar + * Copyright (c) 2008 Jakub Jermar * All rights reserved. * @@ -27,5 +27,5 @@ */ -/** @addtogroup ia32 +/** @addtogroup ia32 * @{ */ @@ -33,14 +33,9 @@ */ -#ifndef KERN_ia32_EGA_H_ -#define KERN_ia32_EGA_H_ +#ifndef KERN_ia32_EGA_H +#define KERN_ia32_EGA_H -#define VIDEORAM 0xb8000 -#define ROW 80 -#define ROWS 25 -#define SCREEN (ROW * ROWS) - -extern void ega_redraw(void); -extern void ega_init(void); +#define EGA_VIDEORAM 0xb8000 +#define EGA_BASE 0x3d4 #endif Index: kernel/arch/ia32/include/types.h =================================================================== --- kernel/arch/ia32/include/types.h (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia32/include/types.h (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -58,4 +58,6 @@ typedef int32_t native_t; +typedef uintptr_t ioport_t; + #define PRIp "x" /**< Format for uintptr_t. */ #define PRIs "u" /**< Format for size_t. */ Index: rnel/arch/ia32/src/drivers/ega.c =================================================================== --- kernel/arch/ia32/src/drivers/ega.c (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ (revision ) @@ -1,170 +1,0 @@ -/* - * Copyright (c) 2001-2004 Jakub Jermar - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. - */ - -/** @addtogroup ia32 - * @{ - */ -/** - * @file - * @brief EGA driver. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* - * The EGA driver. - * Simple and short. Function for displaying characters and "scrolling". - */ - -static parea_t ega_parea; /**< Physical memory area for EGA video RAM. */ - -SPINLOCK_INITIALIZE(egalock); -static uint32_t ega_cursor; -static uint8_t *videoram; -static uint8_t *backbuf; - -static void ega_putchar(chardev_t *d, const char ch); - -chardev_t ega_console; -static chardev_operations_t ega_ops = { - .write = ega_putchar -}; - -static void ega_move_cursor(void); - -void ega_init(void) -{ - uint8_t hi, lo; - - backbuf = (uint8_t *) malloc(SCREEN * 2, 0); - if (!backbuf) - panic("Unable to allocate backbuffer.\n"); - - videoram = (uint8_t *) hw_map(VIDEORAM, SCREEN * 2); - outb(0x3d4, 0xe); - hi = inb(0x3d5); - outb(0x3d4, 0xf); - lo = inb(0x3d5); - ega_cursor = (hi << 8) | lo; - - chardev_initialize("ega_out", &ega_console, &ega_ops); - stdout = &ega_console; - - ega_parea.pbase = VIDEORAM; - ega_parea.vbase = (uintptr_t) videoram; - ega_parea.frames = 1; - ega_parea.cacheable = false; - ddi_parea_register(&ega_parea); - - sysinfo_set_item_val("fb", NULL, true); - sysinfo_set_item_val("fb.kind", NULL, 2); - sysinfo_set_item_val("fb.width", NULL, ROW); - sysinfo_set_item_val("fb.height", NULL, ROWS); - sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM); -} - -static void ega_display_char(char ch) -{ - videoram[ega_cursor * 2] = ch; - backbuf[ega_cursor * 2] = ch; -} - -/* - * This function takes care of scrolling. - */ -static void ega_check_cursor(void) -{ - if (ega_cursor < SCREEN) - return; - - memmove((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); - memmove((void *) backbuf, (void *) (backbuf + ROW * 2), (SCREEN - ROW) * 2); - memsetw(videoram + (SCREEN - ROW) * 2, ROW, 0x0720); - memsetw(backbuf + (SCREEN - ROW) * 2, ROW, 0x0720); - ega_cursor = ega_cursor - ROW; -} - -void ega_putchar(chardev_t *d __attribute__((unused)), const char ch) -{ - ipl_t ipl; - - ipl = interrupts_disable(); - spinlock_lock(&egalock); - - switch (ch) { - case '\n': - ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; - break; - case '\t': - ega_cursor = (ega_cursor + 8) - ega_cursor % 8; - break; - case '\b': - if (ega_cursor % ROW) - ega_cursor--; - break; - default: - ega_display_char(ch); - ega_cursor++; - break; - } - ega_check_cursor(); - ega_move_cursor(); - - spinlock_unlock(&egalock); - interrupts_restore(ipl); -} - -void ega_move_cursor(void) -{ - outb(0x3d4, 0xe); - outb(0x3d5, (uint8_t) ((ega_cursor >> 8) & 0xff)); - outb(0x3d4, 0xf); - outb(0x3d5, (uint8_t) (ega_cursor & 0xff)); -} - -void ega_redraw(void) -{ - memcpy(videoram, backbuf, SCREEN * 2); - ega_move_cursor(); -} - -/** @} - */ Index: kernel/arch/ia32/src/ia32.c =================================================================== --- kernel/arch/ia32/src/ia32.c (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia32/src/ia32.c (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -40,4 +40,5 @@ #include +#include #include #include @@ -94,5 +95,5 @@ else #endif - ega_init(); /* video */ + ega_init(EGA_BASE, EGA_VIDEORAM); /* video */ /* Enable debugger */ Index: kernel/arch/ia64/Makefile.inc =================================================================== --- kernel/arch/ia64/Makefile.inc (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia64/Makefile.inc (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -60,5 +60,4 @@ CONFIG_ASID_FIFO = y - ## Compile with support for software integer division. # @@ -93,7 +92,7 @@ ifeq ($(MACHINE),i460GX) - ARCH_SOURCES += arch/$(ARCH)/src/drivers/ega.c CONFIG_I8042 = y - DEFS += -DI460GX -DCONFIG_I8042 + CONFIG_EGA = y + DEFS += -DI460GX -DCONFIG_I8042 -DCONFIG_EGA BFD = binary endif Index: kernel/arch/ia64/include/asm.h =================================================================== --- kernel/arch/ia64/include/asm.h (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia64/include/asm.h (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -40,6 +40,4 @@ #include -typedef uint64_t ioport_t; - #define IA64_IOSPACE_ADDRESS 0xE001000000000000ULL Index: kernel/arch/ia64/include/drivers/ega.h =================================================================== --- kernel/arch/ia64/include/drivers/ega.h (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia64/include/drivers/ega.h (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -1,5 +1,4 @@ /* - * Copyright (c) 2001-2004 Jakub Jermar - * 2007 Jakub Vana + * Copyright (c) 2008 Jakub Jermar * All rights reserved. * @@ -28,5 +27,5 @@ */ -/** @addtogroup ia32 +/** @addtogroup ia64 * @{ */ @@ -37,11 +36,6 @@ #define KERN_ia64_EGA_H -#define VIDEORAM (0xe0020000000B8000LL) - -#define ROW 80 -#define ROWS 25 -#define SCREEN (ROW * ROWS) - -extern void ega_init(void); +#define EGA_VIDEORAM 0xb8000 +#define EGA_BASE 0x3d4 #endif Index: kernel/arch/ia64/include/types.h =================================================================== --- kernel/arch/ia64/include/types.h (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia64/include/types.h (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -66,4 +66,6 @@ typedef int64_t native_t; +typedef uintptr_t ioport_t; + #define PRIp "lx" /**< Format for uintptr_t. */ #define PRIs "lu" /**< Format for size_t. */ Index: kernel/arch/ia64/src/asm.S =================================================================== --- kernel/arch/ia64/src/asm.S (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia64/src/asm.S (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -129,4 +129,8 @@ br _memsetb +.global memsetw +memsetw: + br _memsetw + .global cpu_halt cpu_halt: Index: rnel/arch/ia64/src/drivers/ega.c =================================================================== --- kernel/arch/ia64/src/drivers/ega.c (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ (revision ) @@ -1,154 +1,0 @@ -/* - * Copyright (c) 2001-2004 Jakub Jermar - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. - */ - -/** @addtogroup ia32 - * @{ - */ -/** - * @file - * @brief EGA driver. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - - -/* - * The EGA driver. - * Simple and short. Function for displaying characters and "scrolling". - */ - - -static parea_t ega_parea; /**< Physical memory area for EGA video RAM. */ - - -SPINLOCK_INITIALIZE(egalock); -static uint32_t ega_cursor; -static uint8_t *videoram; - -static void ega_putchar(chardev_t *d, const char ch); - -chardev_t ega_console; -static chardev_operations_t ega_ops = { - .write = ega_putchar -}; - - -void ega_init(void) -{ - videoram = (uint8_t *) (VIDEORAM); - - /* - * Clear the screen. - */ - _memsetw(videoram, SCREEN, 0x0720); - - chardev_initialize("ega_out", &ega_console, &ega_ops); - stdout = &ega_console; - - ega_parea.pbase = VIDEORAM & 0xffffffff; - ega_parea.vbase = (uintptr_t) videoram; - ega_parea.frames = 1; - ega_parea.cacheable = false; - ddi_parea_register(&ega_parea); - - sysinfo_set_item_val("fb", NULL, true); - sysinfo_set_item_val("fb.kind", NULL, 2); - sysinfo_set_item_val("fb.width", NULL, ROW); - sysinfo_set_item_val("fb.height", NULL, ROWS); - sysinfo_set_item_val("fb.blinking", NULL, true); - sysinfo_set_item_val("fb.address.physical", NULL, - VIDEORAM & 0xffffffff); - -#ifndef CONFIG_FB - putchar('\n'); -#endif -} - -static void ega_display_char(char ch) -{ - videoram[ega_cursor * 2] = ch; - videoram[ega_cursor * 2 + 1] = 7; -} - -/* - * This function takes care of scrolling. - */ -static void ega_check_cursor(void) -{ - if (ega_cursor < SCREEN) - return; - - memmove((void *) videoram, (void *) (videoram + ROW * 2), - (SCREEN - ROW) * 2); - _memsetw(videoram + (SCREEN - ROW) * 2, ROW, 0x0720); - ega_cursor = ega_cursor - ROW; -} - -void ega_putchar(chardev_t *d, const char ch) -{ - ipl_t ipl; - - ipl = interrupts_disable(); - spinlock_lock(&egalock); - - switch (ch) { - case '\n': - ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; - break; - case '\t': - ega_cursor = (ega_cursor + 8) - ega_cursor % 8; - break; - case '\b': - if (ega_cursor % ROW) - ega_cursor--; - break; - default: - ega_display_char(ch); - ega_cursor++; - break; - } - ega_check_cursor(); - - spinlock_unlock(&egalock); - interrupts_restore(ipl); -} - -/** @} - */ Index: kernel/arch/ia64/src/ia64.c =================================================================== --- kernel/arch/ia64/src/ia64.c (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/ia64/src/ia64.c (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -52,6 +52,7 @@ #include #include +#include #include -#include +#include #include #include @@ -133,5 +134,5 @@ ski_init_console(); #else - ega_init(); + ega_init(EGA_BASE, EGA_VIDEORAM); #endif } Index: kernel/arch/sparc64/include/types.h =================================================================== --- kernel/arch/sparc64/include/types.h (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/arch/sparc64/include/types.h (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -55,8 +55,8 @@ typedef uint64_t ipl_t; -typedef uint64_t ioport_t; - typedef uint64_t unative_t; typedef int64_t native_t; + +typedef uintptr_t ioport_t; /**< Formats for uintptr_t, size_t, count_t and index_t */ Index: kernel/genarch/Makefile.inc =================================================================== --- kernel/genarch/Makefile.inc (revision 44ff4fb9fbf32f58d6fa97cffdcb4226917d5a68) +++ kernel/genarch/Makefile.inc (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -104,2 +104,8 @@ genarch/src/ofw/upa.c endif + +## EGA +ifeq ($(CONFIG_EGA), y) + GENARCH_SOURCES += \ + genarch/src/drivers/ega/ega.c +endif Index: kernel/genarch/include/drivers/ega/ega.h =================================================================== --- kernel/genarch/include/drivers/ega/ega.h (revision f2451459eff17f8a5c730a385925d2af36865089) +++ kernel/genarch/include/drivers/ega/ega.h (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -0,0 +1,54 @@ +/* + * Copyright (c) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. + */ + +/** @addtogroup genarch_drivers + * @{ + */ +/** @file + */ + +#ifndef KERN_EGA_H_ +#define KERN_EGA_H_ + +#include + +#define ROW 80 +#define ROWS 25 +#define SCREEN (ROW * ROWS) + +/* EGA device registers. */ +#define EGA_INDEX_REG 0 +#define EGA_DATA_REG 1 + +extern void ega_redraw(void); +extern void ega_init(ioport_t, uintptr_t); + +#endif + +/** @} + */ Index: kernel/genarch/src/drivers/ega/ega.c =================================================================== --- kernel/genarch/src/drivers/ega/ega.c (revision f2451459eff17f8a5c730a385925d2af36865089) +++ kernel/genarch/src/drivers/ega/ega.c (revision f2451459eff17f8a5c730a385925d2af36865089) @@ -0,0 +1,175 @@ +/* + * Copyright (c) 2001-2004 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. + */ + +/** @addtogroup genarch_drivers + * @{ + */ +/** + * @file + * @brief EGA driver. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* + * The EGA driver. + * Simple and short. Function for displaying characters and "scrolling". + */ + +static parea_t ega_parea; /**< Physical memory area for EGA video RAM. */ + +SPINLOCK_INITIALIZE(egalock); +static uint32_t ega_cursor; +static uint8_t *videoram; +static uint8_t *backbuf; +static ioport_t ega_base; + +static void ega_putchar(chardev_t *d, const char ch); + +chardev_t ega_console; +static chardev_operations_t ega_ops = { + .write = ega_putchar +}; + +static void ega_move_cursor(void); + +void ega_init(ioport_t base, uintptr_t videoram_phys) +{ + /* Initialize the software structure. */ + ega_base = base; + + backbuf = (uint8_t *) malloc(SCREEN * 2, 0); + if (!backbuf) + panic("Unable to allocate backbuffer.\n"); + + videoram = (uint8_t *) hw_map(videoram_phys, SCREEN * 2); + + /* Clear the screen and set the cursor position. */ + memsetw(videoram, SCREEN, 0x0720); + memsetw(backbuf, SCREEN, 0x0720); + ega_move_cursor(); + + chardev_initialize("ega_out", &ega_console, &ega_ops); + stdout = &ega_console; + + ega_parea.pbase = videoram_phys; + ega_parea.vbase = (uintptr_t) videoram; + ega_parea.frames = 1; + ega_parea.cacheable = false; + ddi_parea_register(&ega_parea); + + sysinfo_set_item_val("fb", NULL, true); + sysinfo_set_item_val("fb.kind", NULL, 2); + sysinfo_set_item_val("fb.width", NULL, ROW); + sysinfo_set_item_val("fb.height", NULL, ROWS); + sysinfo_set_item_val("fb.blinking", NULL, true); + sysinfo_set_item_val("fb.address.physical", NULL, videoram_phys); +} + +static void ega_display_char(char ch) +{ + videoram[ega_cursor * 2] = ch; + backbuf[ega_cursor * 2] = ch; +} + +/* + * This function takes care of scrolling. + */ +static void ega_check_cursor(void) +{ + if (ega_cursor < SCREEN) + return; + + memmove((void *) videoram, (void *) (videoram + ROW * 2), + (SCREEN - ROW) * 2); + memmove((void *) backbuf, (void *) (backbuf + ROW * 2), + (SCREEN - ROW) * 2); + memsetw(videoram + (SCREEN - ROW) * 2, ROW, 0x0720); + memsetw(backbuf + (SCREEN - ROW) * 2, ROW, 0x0720); + ega_cursor = ega_cursor - ROW; +} + +void ega_putchar(chardev_t *d __attribute__((unused)), const char ch) +{ + ipl_t ipl; + + ipl = interrupts_disable(); + spinlock_lock(&egalock); + + switch (ch) { + case '\n': + ega_cursor = (ega_cursor + ROW) - ega_cursor % ROW; + break; + case '\t': + ega_cursor = (ega_cursor + 8) - ega_cursor % 8; + break; + case '\b': + if (ega_cursor % ROW) + ega_cursor--; + break; + default: + ega_display_char(ch); + ega_cursor++; + break; + } + ega_check_cursor(); + ega_move_cursor(); + + spinlock_unlock(&egalock); + interrupts_restore(ipl); +} + +void ega_move_cursor(void) +{ + outb(ega_base + EGA_INDEX_REG, 0xe); + outb(ega_base + EGA_DATA_REG, (uint8_t) ((ega_cursor >> 8) & 0xff)); + outb(ega_base + EGA_INDEX_REG, 0xf); + outb(ega_base + EGA_DATA_REG, (uint8_t) (ega_cursor & 0xff)); +} + +void ega_redraw(void) +{ + memcpy(videoram, backbuf, SCREEN * 2); + ega_move_cursor(); +} + +/** @} + */