/* ----------------------------------------------------------------------- * * * Copyright 1999-2012 H. Peter Anvin - All Rights Reserved * Chandramouli Narayanan - extended for EFI support * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, * copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom * the Software is furnished to do so, subject to the following * conditions: * * The above copyright notice and this permission notice shall * be included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * ----------------------------------------------------------------------- */ #include #include #include #include #include #include #include #include "efi.h" /* We use cp865_8x16.psf as the standard font for EFI implementation * the header file below contains raw data parsed from cp865_8x16.psf */ #include "cp865_8x16.h" #include "sys/vesa/vesa.h" #include "sys/vesa/video.h" #include "sys/vesa/fill.h" #include "sys/vesa/debug.h" /* EFI GOP support * Note GOP support uses the VESA info structure as much as possible and * extends it as needed for EFI support. Not all of the vesa info structure * is populated. Care must be taken in the routines that rely the vesa * informataion structure */ static void find_pixmask_bits(uint32_t mask, uint8_t *first_bit, uint8_t *len) { uint8_t bit_pos = 0, bit_len = 0; *first_bit = 0; *len = 0; if (mask == 0) return; while (!(mask & 0x1)) { mask = mask >> 1; bit_pos++; } while (mask & 0x1) { mask = mask >> 1; bit_len++; } *first_bit = bit_pos; *len = bit_len; } unsigned long lfb_size; uint16_t lfb_line_size; uint8_t lfb_rsize; uint8_t lfb_gsize; uint8_t lfb_bsize; uint8_t lfb_resv_size; static int efi_vesacon_set_mode(struct vesa_info *vesa_info, int *x, int *y, enum vesa_pixel_format *bestpxf) { EFI_GUID GraphicsOutputProtocolGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID; EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput = NULL; EFI_GRAPHICS_OUTPUT_PROTOCOL_MODE *gop_mode; EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *mode_info; EFI_STATUS st; UINT32 mode_num = 0, bestmode; BOOLEAN mode_match = FALSE; UINTN sz_info; struct vesa_info *vi; struct vesa_mode_info *mi; int err = 0; //debug("Hello, World!\r\n"); /* At this point, we assume that gnu-efi library is initialized */ st = LibLocateProtocol(&GraphicsOutputProtocolGuid, (VOID **) &GraphicsOutput); if (EFI_ERROR(st)) { debug("LiblocateProtocol for GOP failed %d\n", st); return 1; /* function call failed */ } /* We use the VESA info structure to store relevant GOP info as much as possible */ gop_mode = GraphicsOutput->Mode; mode_info = gop_mode->Info; dprintf("mode %d version %d pixlfmt %d hres=%d vres=%d\n", mode_num, mode_info->Version, mode_info->PixelFormat, mode_info->HorizontalResolution, mode_info->VerticalResolution); /* simply pick the best mode that suits the caller's resolution */ for (mode_num = 0; mode_num < gop_mode->MaxMode; mode_num++) { st = uefi_call_wrapper(GraphicsOutput->QueryMode, 4, GraphicsOutput, mode_num, &sz_info, &mode_info); debug("mode_num = %d query_status %d\n", mode_num, st); if (st == EFI_SUCCESS && sz_info >= sizeof(EFI_GRAPHICS_OUTPUT_MODE_INFORMATION)) { /* For now, simply pick the best mode that suits caller's resolution (x,y) * FIXME: Consider any additional criteria for matching mode */ mode_match = ((uint32_t)*x == mode_info->HorizontalResolution && (uint32_t)*y == mode_info->VerticalResolution); debug("mode %d hres=%d vres=%d\n", mode_num, mode_info->HorizontalResolution, mode_info->VerticalResolution); if (mode_match) { bestmode = mode_num; break; } } } if (!mode_match) { /* Instead of bailing out, set the mode to the system default. * Some systems do not have support for 640x480 for instance * This code deals with such cases. */ mode_info = gop_mode->Info; *x = mode_info->HorizontalResolution; *y = mode_info->VerticalResolution; bestmode = gop_mode->Mode; debug("No matching mode, setting to available default mode %d (x=%d, y=%d)\n", bestmode, *x, *y); } /* Allocate space in the bounce buffer for these structures */ vi = malloc(sizeof(*vi)); if (!vi) { err = 10; /* Out of memory */ goto exit; } /* Note that the generic info is untouched as we don't find any relevance to EFI */ mi = &vi->mi; /* Set up mode-specific information */ mi->h_res = *x; mi->v_res = *y; mi->lfb_ptr = (uint8_t *)(VOID *)(UINTN)gop_mode->FrameBufferBase; lfb_size = gop_mode->FrameBufferSize; /* FIXME: * The code below treats bpp == lfb_depth ; verify */ switch (mode_info->PixelFormat) { case PixelRedGreenBlueReserved8BitPerColor: dprintf("RGB8bit "); mi->mode_attr = 0x0080; /* supports physical frame buffer */ mi->bpp = sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL) * 8; mi->rpos = 0; mi->gpos = 8; mi->bpos = 16; mi->resv_pos = 24; lfb_resv_size = 8; mi->logical_scan = lfb_line_size = (mode_info->PixelsPerScanLine * mi->bpp) / 8; *bestpxf = PXF_BGRA32; dprintf("bpp %d pixperScanLine %d logical_scan %d bytesperPix %d\n", mi->bpp, mode_info->PixelsPerScanLine, mi->logical_scan, (mi->bpp + 7)>>3); break; case PixelBlueGreenRedReserved8BitPerColor: dprintf("BGR8bit "); mi->mode_attr = 0x0080; /* supports physical frame buffer */ mi->bpp = sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL) * 8; mi->bpos = 0; mi->gpos = 8; mi->rpos = 16; mi->resv_pos = 24; lfb_resv_size = 8; mi->logical_scan = lfb_line_size = (mode_info->PixelsPerScanLine * mi->bpp) / 8; *bestpxf = PXF_BGRA32; dprintf("bpp %d pixperScanLine %d logical_scan %d bytesperPix %d\n", mi->bpp, mode_info->PixelsPerScanLine, mi->logical_scan, (mi->bpp + 7)>>3); break; case PixelBitMask: mi->mode_attr = 0x0080; /* supports physical frame buffer */ dprintf("RedMask 0x%x GrnMask 0x%x BluMask 0x%x RsvMask 0x%x\n", mode_info->PixelInformation.RedMask, mode_info->PixelInformation.GreenMask, mode_info->PixelInformation.BlueMask, mode_info->PixelInformation.ReservedMask); find_pixmask_bits(mode_info->PixelInformation.RedMask, &mi->rpos, &lfb_rsize); find_pixmask_bits(mode_info->PixelInformation.GreenMask, &mi->gpos, &lfb_gsize); find_pixmask_bits(mode_info->PixelInformation.BlueMask, &mi->bpos, &lfb_bsize); find_pixmask_bits(mode_info->PixelInformation.ReservedMask, &mi->resv_pos, &lfb_resv_size); mi->bpp = lfb_rsize + lfb_gsize + lfb_bsize + lfb_resv_size; mi->logical_scan = lfb_line_size = (mode_info->PixelsPerScanLine * mi->bpp) / 8; dprintf("RPos %d Rsize %d GPos %d Gsize %d\n", mi->rpos, lfb_rsize, mi->gpos, lfb_gsize); dprintf("BPos %d Bsize %d RsvP %d RsvSz %d\n", mi->bpos, lfb_bsize, mi->resv_pos, lfb_resv_size); dprintf("bpp %d logical_scan %d bytesperPix %d\n", mi->bpp, mi->logical_scan, (mi->bpp + 7)>>3); switch (mi->bpp) { case 32: *bestpxf = PXF_BGRA32; break; case 24: *bestpxf = PXF_BGR24; break; case 16: *bestpxf = PXF_LE_RGB16_565; break; default: dprintf("Unable to handle bits per pixel %d, bailing out\n", mi->bpp); err = 4; goto exit; } break; case PixelBltOnly: /* FIXME: unsupported */ mi->mode_attr = 0x0000; /* no support for physical frame buffer */ err = 4; /* no mode found */ goto exit; break; default: /* should not get here, but let's error out */ err = 4; /* no mode found */ goto exit; break; } memcpy(&vesa_info->mi, mi, sizeof *mi); /* Now set video mode */ st = uefi_call_wrapper(GraphicsOutput->SetMode, 2, GraphicsOutput, bestmode); if (EFI_ERROR(st)) { err = 9; /* Failed to set mode */ dprintf("Failed to set mode %d\n", bestmode); goto exit; } /* TODO: Follow the code usage of vesacon_background & vesacon_shadowfb */ /* __vesacon_background = calloc(mi->h_res*mi->v_res, 4); __vesacon_shadowfb = calloc(mi->h_res*mi->v_res, 4); */ /* FIXME: the allocation takes the possible padding into account * whereas BIOS code simply allocates hres * vres bytes. * Which is correct? */ /* * For performance reasons, or due to hardware restrictions, scan lines * may be padded to an amount of memory alignment. These padding pixel elements * are outside the area covered by HorizontalResolution and are not visible. * For direct frame buffer access, this number is used as a span between starts * of pixel lines in video memory. Based on the size of an individual pixel element * and PixelsPerScanline, the offset in video memory from pixel element (x, y) * to pixel element (x, y+1) has to be calculated as * "sizeof( PixelElement ) * PixelsPerScanLine", and not * "sizeof( PixelElement ) * HorizontalResolution", though in many cases * those values can coincide. */ exit: if (vi) free(vi); return err; } static void efi_vesacon_screencpy(size_t dst, const uint32_t *s, size_t bytes, struct win_info *wi) { size_t win_off; char *win_base = wi->win_base; /* For EFI, we simply take the offset from the framebuffer and write to it * FIXME: any gotchas? */ win_off = dst; memcpy(win_base + win_off, s, bytes); } static int efi_vesacon_font_query(uint8_t **font) { /* set up font info * For now, font info is stored as raw data and used * as such. Altenatively, the font data stored in a file * could be read and parsed. (note: for this, EFI * file support should be exposed via firmware structure) */ *font = (uint8_t *)cp865_8x16_font_data; return cp865_8x16_font_height; } __export int __vesacon_i915resolution(int x, int y) { /* We don't support this function */ return 1; } struct vesa_ops efi_vesa_ops = { .set_mode = efi_vesacon_set_mode, .screencpy = efi_vesacon_screencpy, .font_query = efi_vesacon_font_query, };