/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2009 Jared D. McNeill * All rights reserved. * Copyright 2020 Toomas Soome * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. */ #include #include #include #include #include #include #include #include #include #include "libi386.h" #include "vbe.h" /* * VESA BIOS Extensions routines */ static struct vbeinfoblock *vbe; static struct modeinfoblock *vbe_mode; static uint16_t *vbe_mode_list; static size_t vbe_mode_list_size; struct vesa_edid_info *edid_info = NULL; /* The default VGA color palette format is 6 bits per primary color. */ int palette_format = 6; #define VESA_MODE_BASE 0x100 /* * palette array for 8-bit indexed colors. In this case, cmap does store * index and pe8 does store actual RGB. This is needed because we may * not be able to read palette data from hardware. */ struct paletteentry *pe8 = NULL; static struct named_resolution { const char *name; const char *alias; unsigned int width; unsigned int height; } resolutions[] = { { .name = "480p", .width = 640, .height = 480, }, { .name = "720p", .width = 1280, .height = 720, }, { .name = "1080p", .width = 1920, .height = 1080, }, { .name = "1440p", .width = 2560, .height = 1440, }, { .name = "2160p", .alias = "4k", .width = 3840, .height = 2160, }, { .name = "5k", .width = 5120, .height = 2880, } }; static bool vbe_resolution_compare(struct named_resolution *res, const char *cmp) { if (strcasecmp(res->name, cmp) == 0) return (true); if (res->alias != NULL && strcasecmp(res->alias, cmp) == 0) return (true); return (false); } static void vbe_get_max_resolution(int *width, int *height) { struct named_resolution *res; char *maxres; char *height_start, *width_start; int idx; *width = *height = 0; maxres = getenv("vbe_max_resolution"); /* No max_resolution set? Bail out; choose highest resolution */ if (maxres == NULL) return; /* See if it matches one of our known resolutions */ for (idx = 0; idx < nitems(resolutions); ++idx) { res = &resolutions[idx]; if (vbe_resolution_compare(res, maxres)) { *width = res->width; *height = res->height; return; } } /* Not a known resolution, try to parse it; make a copy we can modify */ maxres = strdup(maxres); if (maxres == NULL) return; height_start = strchr(maxres, 'x'); if (height_start == NULL) { free(maxres); return; } width_start = maxres; *height_start++ = 0; /* Errors from this will effectively mean "no max" */ *width = (int)strtol(width_start, NULL, 0); *height = (int)strtol(height_start, NULL, 0); free(maxres); } int vga_get_reg(int reg, int index) { return (inb(reg + index)); } int vga_get_atr(int reg, int i) { int ret; (void) inb(reg + VGA_GEN_INPUT_STAT_1); outb(reg + VGA_AC_WRITE, i); ret = inb(reg + VGA_AC_READ); (void) inb(reg + VGA_GEN_INPUT_STAT_1); return (ret); } void vga_set_atr(int reg, int i, int v) { (void) inb(reg + VGA_GEN_INPUT_STAT_1); outb(reg + VGA_AC_WRITE, i); outb(reg + VGA_AC_WRITE, v); (void) inb(reg + VGA_GEN_INPUT_STAT_1); } void vga_set_indexed(int reg, int indexreg, int datareg, uint8_t index, uint8_t val) { outb(reg + indexreg, index); outb(reg + datareg, val); } int vga_get_indexed(int reg, int indexreg, int datareg, uint8_t index) { outb(reg + indexreg, index); return (inb(reg + datareg)); } int vga_get_crtc(int reg, int i) { return (vga_get_indexed(reg, VGA_CRTC_ADDRESS, VGA_CRTC_DATA, i)); } void vga_set_crtc(int reg, int i, int v) { vga_set_indexed(reg, VGA_CRTC_ADDRESS, VGA_CRTC_DATA, i, v); } int vga_get_seq(int reg, int i) { return (vga_get_indexed(reg, VGA_SEQ_ADDRESS, VGA_SEQ_DATA, i)); } void vga_set_seq(int reg, int i, int v) { vga_set_indexed(reg, VGA_SEQ_ADDRESS, VGA_SEQ_DATA, i, v); } int vga_get_grc(int reg, int i) { return (vga_get_indexed(reg, VGA_GC_ADDRESS, VGA_GC_DATA, i)); } void vga_set_grc(int reg, int i, int v) { vga_set_indexed(reg, VGA_GC_ADDRESS, VGA_GC_DATA, i, v); } /* * Return true when this controller is VGA compatible. */ bool vbe_is_vga(void) { if (vbe == NULL) return (false); return ((vbe->Capabilities & VBE_CAP_NONVGA) == 0); } /* Actually assuming mode 3. */ void bios_set_text_mode(int mode) { int atr; if (vbe->Capabilities & VBE_CAP_DAC8) { int m; /* * The mode change should reset the palette format to * 6 bits, but apparently some systems do fail with 8-bit * palette, so we switch to 6-bit here. */ m = 0x0600; (void) biosvbe_palette_format(&m); palette_format = m; } v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = mode; /* set VGA text mode */ v86int(); atr = vga_get_atr(VGA_REG_BASE, VGA_AC_MODE_CONTROL); atr &= ~VGA_AC_MC_BI; atr &= ~VGA_AC_MC_ELG; vga_set_atr(VGA_REG_BASE, VGA_AC_MODE_CONTROL, atr); gfx_state.tg_mode = mode; gfx_state.tg_fb_type = FB_TEXT; gfx_state.tg_fb.fb_height = TEXT_ROWS; gfx_state.tg_fb.fb_width = TEXT_COLS; gfx_state.tg_fb.fb_mask_red = (1 << palette_format) - 1 << 16; gfx_state.tg_fb.fb_mask_green = (1 << palette_format) - 1 << 8; gfx_state.tg_fb.fb_mask_blue = (1 << palette_format) - 1 << 0; gfx_state.tg_ctype = CT_INDEXED; env_setenv("screen.textmode", EV_VOLATILE | EV_NOHOOK, "1", NULL, NULL); } /* Function 00h - Return VBE Controller Information */ static int biosvbe_info(struct vbeinfoblock *vbep) { struct vbeinfoblock *rvbe; int ret; if (vbep == NULL) return (VBE_FAILED); rvbe = bio_alloc(sizeof(*rvbe)); if (rvbe == NULL) return (VBE_FAILED); /* Now check if we have vesa. */ memset(rvbe, 0, sizeof (*vbe)); memcpy(rvbe->VbeSignature, "VBE2", 4); v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f00; v86.es = VTOPSEG(rvbe); v86.edi = VTOPOFF(rvbe); v86int(); ret = v86.eax & 0xffff; if (ret != VBE_SUCCESS) goto done; if (memcmp(rvbe->VbeSignature, "VESA", 4) != 0) { ret = VBE_NOTSUP; goto done; } bcopy(rvbe, vbep, sizeof(*vbep)); done: bio_free(rvbe, sizeof(*rvbe)); return (ret); } /* Function 01h - Return VBE Mode Information */ static int biosvbe_get_mode_info(int mode, struct modeinfoblock *mi) { struct modeinfoblock *rmi; int ret; rmi = bio_alloc(sizeof(*rmi)); if (rmi == NULL) return (VBE_FAILED); v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f01; v86.ecx = mode; v86.es = VTOPSEG(rmi); v86.edi = VTOPOFF(rmi); v86int(); ret = v86.eax & 0xffff; if (ret != VBE_SUCCESS) goto done; bcopy(rmi, mi, sizeof(*rmi)); done: bio_free(rmi, sizeof(*rmi)); return (ret); } /* Function 02h - Set VBE Mode */ static int biosvbe_set_mode(int mode, struct crtciinfoblock *ci) { int rv; if (vbe->Capabilities & VBE_CAP_DAC8) { int m; /* * The mode change should reset the palette format to * 6 bits, but apparently some systems do fail with 8-bit * palette, so we switch to 6-bit here. */ m = 0x0600; if (biosvbe_palette_format(&m) == VBE_SUCCESS) palette_format = m; } v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f02; v86.ebx = mode | 0x4000; /* set linear FB bit */ v86.es = VTOPSEG(ci); v86.edi = VTOPOFF(ci); v86int(); rv = v86.eax & 0xffff; if (vbe->Capabilities & VBE_CAP_DAC8) { int m; /* Switch to 8-bits per primary color. */ m = 0x0800; if (biosvbe_palette_format(&m) == VBE_SUCCESS) palette_format = m; } env_setenv("screen.textmode", EV_VOLATILE | EV_NOHOOK, "0", NULL, NULL); return (rv); } /* Function 03h - Get VBE Mode */ static int biosvbe_get_mode(int *mode) { v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f03; v86int(); *mode = v86.ebx & 0x3fff; /* Bits 0-13 */ return (v86.eax & 0xffff); } /* Function 08h - Set/Get DAC Palette Format */ int biosvbe_palette_format(int *format) { v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f08; v86.ebx = *format; v86int(); *format = (v86.ebx >> 8) & 0xff; return (v86.eax & 0xffff); } /* Function 09h - Set/Get Palette Data */ static int biosvbe_palette_data(int mode, int reg, struct paletteentry *pe) { v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f09; v86.ebx = mode; v86.edx = reg; v86.ecx = 1; v86.es = VTOPSEG(pe); v86.edi = VTOPOFF(pe); v86int(); return (v86.eax & 0xffff); } /* * Function 15h BL=00h - Report VBE/DDC Capabilities * * int biosvbe_ddc_caps(void) * return: VBE/DDC capabilities */ static int biosvbe_ddc_caps(void) { v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f15; /* display identification extensions */ v86.ebx = 0; /* report DDC capabilities */ v86.ecx = 0; /* controller unit number (00h = primary) */ v86.es = 0; v86.edi = 0; v86int(); if (VBE_ERROR(v86.eax & 0xffff)) return (0); return (v86.ebx & 0xffff); } /* Function 11h BL=01h - Flat Panel status */ static int biosvbe_ddc_read_flat_panel_info(void *buf) { v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f11; /* Flat Panel Interface extensions */ v86.ebx = 1; /* Return Flat Panel Information */ v86.es = VTOPSEG(buf); v86.edi = VTOPOFF(buf); v86int(); return (v86.eax & 0xffff); } /* Function 15h BL=01h - Read EDID */ static int biosvbe_ddc_read_edid(int blockno, void *buf) { v86.ctl = V86_FLAGS; v86.addr = 0x10; v86.eax = 0x4f15; /* display identification extensions */ v86.ebx = 1; /* read EDID */ v86.ecx = 0; /* controller unit number (00h = primary) */ v86.edx = blockno; v86.es = VTOPSEG(buf); v86.edi = VTOPOFF(buf); v86int(); return (v86.eax & 0xffff); } static int vbe_mode_is_supported(struct modeinfoblock *mi) { if ((mi->ModeAttributes & 0x01) == 0) return (0); /* mode not supported by hardware */ if ((mi->ModeAttributes & 0x08) == 0) return (0); /* linear fb not available */ if ((mi->ModeAttributes & 0x10) == 0) return (0); /* text mode */ if (mi->NumberOfPlanes != 1) return (0); /* planar mode not supported */ if (mi->MemoryModel != 0x04 /* Packed pixel */ && mi->MemoryModel != 0x06 /* Direct Color */) return (0); /* unsupported pixel format */ return (1); } static bool vbe_check(void) { if (vbe == NULL) { printf("VBE not available\n"); return (false); } return (true); } static int mode_set(struct env_var *ev, int flags __unused, const void *value) { int mode; if (strcmp(ev->ev_name, "screen.textmode") == 0) { unsigned long v; char *end; if (value == NULL) return (0); errno = 0; v = strtoul(value, &end, 0); if (errno != 0 || *(char *)value == '\0' || *end != '\0' || (v != 0 && v != 1)) return (EINVAL); env_setenv("screen.textmode", EV_VOLATILE | EV_NOHOOK, value, NULL, NULL); if (v == 1) { reset_font_flags(); bios_text_font(true); bios_set_text_mode(VGA_TEXT_MODE); (void) cons_update_mode(false); return (0); } } else if (strcmp(ev->ev_name, "vbe_max_resolution") == 0) { env_setenv("vbe_max_resolution", EV_VOLATILE | EV_NOHOOK, value, NULL, NULL); } else { return (EINVAL); } mode = vbe_default_mode(); if (gfx_state.tg_mode != mode) { reset_font_flags(); bios_text_font(false); vbe_set_mode(mode); cons_update_mode(true); } return (0); } static void * vbe_farptr(uint32_t farptr) { return (PTOV((((farptr & 0xffff0000) >> 12) + (farptr & 0xffff)))); } void vbe_init(void) { uint16_t *p, *ml; /* First set FB for text mode. */ gfx_state.tg_fb_type = FB_TEXT; gfx_state.tg_fb.fb_height = TEXT_ROWS; gfx_state.tg_fb.fb_width = TEXT_COLS; gfx_state.tg_ctype = CT_INDEXED; gfx_state.tg_mode = 3; env_setenv("screen.textmode", EV_VOLATILE, "1", mode_set, env_nounset); env_setenv("vbe_max_resolution", EV_VOLATILE, NULL, mode_set, env_nounset); if (vbe == NULL) { vbe = malloc(sizeof(*vbe)); if (vbe == NULL) return; } if (vbe_mode == NULL) { vbe_mode = malloc(sizeof(*vbe_mode)); if (vbe_mode == NULL) { free(vbe); vbe = NULL; } } if (biosvbe_info(vbe) != VBE_SUCCESS) { free(vbe); vbe = NULL; free(vbe_mode); vbe_mode = NULL; return; } /* * Copy mode list. We must do this because some systems do * corrupt the provided list (vbox 6.1 is one example). */ p = ml = vbe_farptr(vbe->VideoModePtr); while(*p++ != 0xFFFF) ; vbe_mode_list_size = (uintptr_t)p - (uintptr_t)ml; /* * Since vbe_init() is used only once at very start of the loader, * we assume malloc will not fail there, but in case it does, * we point vbe_mode_list to memory pointed by VideoModePtr. */ vbe_mode_list = malloc(vbe_mode_list_size); if (vbe_mode_list == NULL) vbe_mode_list = ml; else bcopy(ml, vbe_mode_list, vbe_mode_list_size); /* reset VideoModePtr, to make sure, we only do use vbe_mode_list. */ vbe->VideoModePtr = 0; /* vbe_set_mode() will set up the rest. */ } bool vbe_available(void) { return (gfx_state.tg_fb_type == FB_VBE); } int vbe_set_palette(const struct paletteentry *entry, size_t slot) { struct paletteentry pe; int mode, ret; if (!vbe_check() || (vbe->Capabilities & VBE_CAP_DAC8) == 0) return (1); if (gfx_state.tg_ctype != CT_INDEXED) { return (1); } pe.Blue = entry->Blue; pe.Green = entry->Green; pe.Red = entry->Red; pe.Reserved = entry->Reserved; if (vbe->Capabilities & VBE_CAP_SNOW) mode = 0x80; else mode = 0; ret = biosvbe_palette_data(mode, slot, &pe); return (ret == VBE_SUCCESS ? 0 : 1); } int vbe_get_mode(void) { return (gfx_state.tg_mode); } int vbe_set_mode(int modenum) { struct modeinfoblock mi; int bpp, ret; if (!vbe_check()) return (1); ret = biosvbe_get_mode_info(modenum, &mi); if (VBE_ERROR(ret)) { printf("mode 0x%x invalid\n", modenum); return (1); } if (!vbe_mode_is_supported(&mi)) { printf("mode 0x%x not supported\n", modenum); return (1); } /* calculate bytes per pixel */ switch (mi.BitsPerPixel) { case 32: case 24: case 16: case 15: case 8: break; default: printf("BitsPerPixel %d is not supported\n", mi.BitsPerPixel); return (1); } ret = biosvbe_set_mode(modenum, NULL); if (VBE_ERROR(ret)) { printf("mode 0x%x could not be set\n", modenum); return (1); } gfx_state.tg_mode = modenum; gfx_state.tg_fb_type = FB_VBE; /* make sure we have current MI in vbestate */ memcpy(vbe_mode, &mi, sizeof (*vbe_mode)); gfx_state.tg_fb.fb_addr = (uint64_t)mi.PhysBasePtr & 0xffffffff; gfx_state.tg_fb.fb_height = mi.YResolution; gfx_state.tg_fb.fb_width = mi.XResolution; gfx_state.tg_fb.fb_bpp = mi.BitsPerPixel; free(gfx_state.tg_shadow_fb); gfx_state.tg_shadow_fb = malloc(mi.YResolution * mi.XResolution * sizeof(struct paletteentry)); /* Bytes per pixel */ bpp = roundup2(mi.BitsPerPixel, NBBY) / NBBY; /* vbe_mode_is_supported() excludes the rest */ switch (mi.MemoryModel) { case 0x4: gfx_state.tg_ctype = CT_INDEXED; break; case 0x6: gfx_state.tg_ctype = CT_RGB; break; } #define COLOR_MASK(size, pos) (((1 << size) - 1) << pos) if (gfx_state.tg_ctype == CT_INDEXED) { gfx_state.tg_fb.fb_mask_red = COLOR_MASK(palette_format, 16); gfx_state.tg_fb.fb_mask_green = COLOR_MASK(palette_format, 8); gfx_state.tg_fb.fb_mask_blue = COLOR_MASK(palette_format, 0); } else if (vbe->VbeVersion >= 0x300) { gfx_state.tg_fb.fb_mask_red = COLOR_MASK(mi.LinRedMaskSize, mi.LinRedFieldPosition); gfx_state.tg_fb.fb_mask_green = COLOR_MASK(mi.LinGreenMaskSize, mi.LinGreenFieldPosition); gfx_state.tg_fb.fb_mask_blue = COLOR_MASK(mi.LinBlueMaskSize, mi.LinBlueFieldPosition); } else { gfx_state.tg_fb.fb_mask_red = COLOR_MASK(mi.RedMaskSize, mi.RedFieldPosition); gfx_state.tg_fb.fb_mask_green = COLOR_MASK(mi.GreenMaskSize, mi.GreenFieldPosition); gfx_state.tg_fb.fb_mask_blue = COLOR_MASK(mi.BlueMaskSize, mi.BlueFieldPosition); } gfx_state.tg_fb.fb_mask_reserved = ~(gfx_state.tg_fb.fb_mask_red | gfx_state.tg_fb.fb_mask_green | gfx_state.tg_fb.fb_mask_blue); if (vbe->VbeVersion >= 0x300) gfx_state.tg_fb.fb_stride = mi.LinBytesPerScanLine / bpp; else gfx_state.tg_fb.fb_stride = mi.BytesPerScanLine / bpp; gfx_state.tg_fb.fb_size = mi.YResolution * gfx_state.tg_fb.fb_stride * bpp; return (0); } /* * Verify existence of mode number or find mode by * dimensions. If depth is not given, walk values 32, 24, 16, 8. */ static int vbe_find_mode_xydm(int x, int y, int depth, int m) { struct modeinfoblock mi; uint16_t *farptr; uint16_t mode; int idx, nentries, i; memset(vbe, 0, sizeof (*vbe)); if (biosvbe_info(vbe) != VBE_SUCCESS) return (0); if (m != -1) i = 8; else if (depth == -1) i = 32; else i = depth; nentries = vbe_mode_list_size / sizeof(*vbe_mode_list); while (i > 0) { for (idx = 0; idx < nentries; idx++) { mode = vbe_mode_list[idx]; if (mode == 0xffff) break; if (biosvbe_get_mode_info(mode, &mi) != VBE_SUCCESS) { continue; } /* we only care about linear modes here */ if (vbe_mode_is_supported(&mi) == 0) continue; if (m != -1) { if (m == mode) return (mode); else continue; } if (mi.XResolution == x && mi.YResolution == y && mi.BitsPerPixel == i) return (mode); } if (depth != -1) break; i -= 8; } return (0); } static int vbe_find_mode(char *str) { int x, y, depth; if (!gfx_parse_mode_str(str, &x, &y, &depth)) return (0); return (vbe_find_mode_xydm(x, y, depth, -1)); } static void vbe_dump_mode(int modenum, struct modeinfoblock *mi) { printf("0x%x=%dx%dx%d", modenum, mi->XResolution, mi->YResolution, mi->BitsPerPixel); } static bool vbe_get_edid(edid_res_list_t *res) { struct vesa_edid_info *edidp; const uint8_t magic[] = EDID_MAGIC; int ddc_caps; bool ret = false; if (edid_info != NULL) return (gfx_get_edid_resolution(edid_info, res)); ddc_caps = biosvbe_ddc_caps(); if (ddc_caps == 0) { return (ret); } edidp = bio_alloc(sizeof(*edidp)); if (edidp == NULL) return (ret); memset(edidp, 0, sizeof(*edidp)); if (VBE_ERROR(biosvbe_ddc_read_edid(0, edidp))) goto done; if (memcmp(edidp, magic, sizeof(magic)) != 0) goto done; /* Unknown EDID version. */ if (edidp->header.version != 1) goto done; ret = gfx_get_edid_resolution(edidp, res); edid_info = malloc(sizeof(*edid_info)); if (edid_info != NULL) memcpy(edid_info, edidp, sizeof (*edid_info)); done: bio_free(edidp, sizeof(*edidp)); return (ret); } static bool vbe_get_flatpanel(uint32_t *pwidth, uint32_t *pheight) { struct vesa_flat_panel_info *fp_info; bool ret = false; fp_info = bio_alloc(sizeof (*fp_info)); if (fp_info == NULL) return (ret); memset(fp_info, 0, sizeof (*fp_info)); if (VBE_ERROR(biosvbe_ddc_read_flat_panel_info(fp_info))) goto done; *pwidth = fp_info->HSize; *pheight = fp_info->VSize; ret = true; done: bio_free(fp_info, sizeof (*fp_info)); return (ret); } static void vbe_print_memory(unsigned vmem) { char unit = 'K'; vmem /= 1024; if (vmem >= 10240000) { vmem /= 1048576; unit = 'G'; } else if (vmem >= 10000) { vmem /= 1024; unit = 'M'; } printf("Total memory: %u%cB\n", vmem, unit); } static void vbe_print_vbe_info(struct vbeinfoblock *vbep) { char *oemstring = ""; char *oemvendor = "", *oemproductname = "", *oemproductrev = ""; if (vbep->OemStringPtr != 0) oemstring = vbe_farptr(vbep->OemStringPtr); if (vbep->OemVendorNamePtr != 0) oemvendor = vbe_farptr(vbep->OemVendorNamePtr); if (vbep->OemProductNamePtr != 0) oemproductname = vbe_farptr(vbep->OemProductNamePtr); if (vbep->OemProductRevPtr != 0) oemproductrev = vbe_farptr(vbep->OemProductRevPtr); printf("VESA VBE Version %d.%d\n%s\n", vbep->VbeVersion >> 8, vbep->VbeVersion & 0xF, oemstring); if (vbep->OemSoftwareRev != 0) { printf("OEM Version %d.%d, %s (%s, %s)\n", vbep->OemSoftwareRev >> 8, vbep->OemSoftwareRev & 0xF, oemvendor, oemproductname, oemproductrev); } vbe_print_memory(vbep->TotalMemory << 16); printf("Number of Image Pages: %d\n", vbe_mode->LinNumberOfImagePages); } /* List available modes, filter by depth. If depth is -1, list all. */ void vbe_modelist(int depth) { struct modeinfoblock mi; uint16_t mode; int nmodes, idx, nentries; int ddc_caps; uint32_t width, height; bool edid = false; edid_res_list_t res; struct resolution *rp; if (!vbe_check()) return; ddc_caps = biosvbe_ddc_caps(); if (ddc_caps & 3) { printf("DDC"); if (ddc_caps & 1) printf(" [DDC1]"); if (ddc_caps & 2) printf(" [DDC2]"); TAILQ_INIT(&res); edid = vbe_get_edid(&res); if (edid) { printf(": EDID"); while ((rp = TAILQ_FIRST(&res)) != NULL) { printf(" %dx%d", rp->width, rp->height); TAILQ_REMOVE(&res, rp, next); free(rp); } printf("\n"); } else { printf(": no EDID information\n"); } } if (!edid) if (vbe_get_flatpanel(&width, &height)) printf(": Panel %dx%d\n", width, height); nmodes = 0; memset(vbe, 0, sizeof (*vbe)); memcpy(vbe->VbeSignature, "VBE2", 4); if (biosvbe_info(vbe) != VBE_SUCCESS) goto done; if (memcmp(vbe->VbeSignature, "VESA", 4) != 0) goto done; vbe_print_vbe_info(vbe); printf("Modes: "); nentries = vbe_mode_list_size / sizeof(*vbe_mode_list); for (idx = 0; idx < nentries; idx++) { mode = vbe_mode_list[idx]; if (mode == 0xffff) break; if (biosvbe_get_mode_info(mode, &mi) != VBE_SUCCESS) continue; /* we only care about linear modes here */ if (vbe_mode_is_supported(&mi) == 0) continue; /* apply requested filter */ if (depth != -1 && mi.BitsPerPixel != depth) continue; if (nmodes % 4 == 0) printf("\n"); else printf(" "); vbe_dump_mode(mode, &mi); nmodes++; } done: if (nmodes == 0) printf("none found"); printf("\n"); } static void vbe_print_mode(bool verbose __unused) { int nc, mode, i, rc; nc = NCOLORS; memset(vbe, 0, sizeof (*vbe)); if (biosvbe_info(vbe) != VBE_SUCCESS) return; vbe_print_vbe_info(vbe); if (biosvbe_get_mode(&mode) != VBE_SUCCESS) { printf("Error getting current VBE mode\n"); return; } if (biosvbe_get_mode_info(mode, vbe_mode) != VBE_SUCCESS || vbe_mode_is_supported(vbe_mode) == 0) { printf("VBE mode (0x%x) is not framebuffer mode\n", mode); return; } printf("\nCurrent VBE mode: "); vbe_dump_mode(mode, vbe_mode); printf("\n"); printf("%ux%ux%u, stride=%u\n", gfx_state.tg_fb.fb_width, gfx_state.tg_fb.fb_height, gfx_state.tg_fb.fb_bpp, gfx_state.tg_fb.fb_stride * (roundup2(gfx_state.tg_fb.fb_bpp, NBBY) / NBBY)); printf(" frame buffer: address=%jx, size=%jx\n", (uintmax_t)gfx_state.tg_fb.fb_addr, (uintmax_t)gfx_state.tg_fb.fb_size); if (vbe_mode->MemoryModel == 0x6) { printf(" color mask: R=%08x, G=%08x, B=%08x\n", gfx_state.tg_fb.fb_mask_red, gfx_state.tg_fb.fb_mask_green, gfx_state.tg_fb.fb_mask_blue); pager_open(); for (i = 0; i < nc; i++) { printf("%d: R=%02x, G=%02x, B=%02x %08x", i, (cmap[i] & gfx_state.tg_fb.fb_mask_red) >> ffs(gfx_state.tg_fb.fb_mask_red) - 1, (cmap[i] & gfx_state.tg_fb.fb_mask_green) >> ffs(gfx_state.tg_fb.fb_mask_green) - 1, (cmap[i] & gfx_state.tg_fb.fb_mask_blue) >> ffs(gfx_state.tg_fb.fb_mask_blue) - 1, cmap[i]); if (pager_output("\n") != 0) break; } pager_close(); return; } mode = 1; /* get DAC palette width */ rc = biosvbe_palette_format(&mode); if (rc != VBE_SUCCESS) return; printf(" palette format: %x bits per primary\n", mode); if (pe8 == NULL) return; pager_open(); for (i = 0; i < nc; i++) { printf("%d: R=%02x, G=%02x, B=%02x", i, pe8[i].Red, pe8[i].Green, pe8[i].Blue); if (pager_output("\n") != 0) break; } pager_close(); } /* * Try EDID preferred mode, if EDID or the suggested mode is not available, * then try flat panel information. * Fall back to VBE_DEFAULT_MODE. */ int vbe_default_mode(void) { edid_res_list_t res; struct resolution *rp; int modenum; uint32_t width, height; modenum = 0; vbe_get_max_resolution(&width, &height); if (width != 0 && height != 0) modenum = vbe_find_mode_xydm(width, height, -1, -1); TAILQ_INIT(&res); if (vbe_get_edid(&res)) { while ((rp = TAILQ_FIRST(&res)) != NULL) { if (modenum == 0) { modenum = vbe_find_mode_xydm( rp->width, rp->height, -1, -1); } TAILQ_REMOVE(&res, rp, next); free(rp); } } if (modenum == 0 && vbe_get_flatpanel(&width, &height)) { modenum = vbe_find_mode_xydm(width, height, -1, -1); } /* Still no mode? Fall back to default. */ if (modenum == 0) modenum = vbe_find_mode(VBE_DEFAULT_MODE); return (modenum); } COMMAND_SET(vbe, "vbe", "vesa framebuffer mode management", command_vesa); int command_vesa(int argc, char *argv[]) { char *arg, *cp; int modenum = -1, n; if (!vbe_check()) return (CMD_OK); if (argc < 2) goto usage; if (strcmp(argv[1], "list") == 0) { n = -1; if (argc != 2 && argc != 3) goto usage; if (argc == 3) { arg = argv[2]; errno = 0; n = strtoul(arg, &cp, 0); if (errno != 0 || *arg == '\0' || cp[0] != '\0') { snprintf(command_errbuf, sizeof (command_errbuf), "depth should be an integer"); return (CMD_ERROR); } } vbe_modelist(n); return (CMD_OK); } if (strcmp(argv[1], "get") == 0) { bool verbose = false; if (argc != 2) { if (argc > 3 || strcmp(argv[2], "-v") != 0) goto usage; verbose = true; } vbe_print_mode(verbose); return (CMD_OK); } if (strcmp(argv[1], "off") == 0) { if (argc != 2) goto usage; if (gfx_state.tg_mode == VGA_TEXT_MODE) return (CMD_OK); reset_font_flags(); bios_text_font(true); bios_set_text_mode(VGA_TEXT_MODE); cons_update_mode(false); return (CMD_OK); } if (strcmp(argv[1], "on") == 0) { if (argc != 2) goto usage; modenum = vbe_default_mode(); if (modenum == 0) { snprintf(command_errbuf, sizeof (command_errbuf), "%s: no suitable VBE mode number found", argv[0]); return (CMD_ERROR); } } else if (strcmp(argv[1], "set") == 0) { if (argc != 3) goto usage; if (strncmp(argv[2], "0x", 2) == 0) { arg = argv[2]; errno = 0; n = strtoul(arg, &cp, 0); if (errno != 0 || *arg == '\0' || cp[0] != '\0') { snprintf(command_errbuf, sizeof (command_errbuf), "mode should be an integer"); return (CMD_ERROR); } modenum = vbe_find_mode_xydm(0, 0, 0, n); } else if (strchr(argv[2], 'x') != NULL) { modenum = vbe_find_mode(argv[2]); } } else { goto usage; } if (modenum == 0) { snprintf(command_errbuf, sizeof (command_errbuf), "%s: mode %s not supported by firmware\n", argv[0], argv[2]); return (CMD_ERROR); } if (modenum >= VESA_MODE_BASE) { if (gfx_state.tg_mode != modenum) { reset_font_flags(); bios_text_font(false); vbe_set_mode(modenum); cons_update_mode(true); } return (CMD_OK); } else { snprintf(command_errbuf, sizeof (command_errbuf), "%s: mode %s is not framebuffer mode\n", argv[0], argv[2]); return (CMD_ERROR); } usage: snprintf(command_errbuf, sizeof (command_errbuf), "usage: %s on | off | get | list [depth] | " "set ", argv[0]); return (CMD_ERROR); }