SeaBIOS July 2011

seabios@seabios.org

20 participants
47 discussions

[PATCH v2 0/4] pci: two-pass initialization

by Gerd Hoffmann

Hi, Here is v2 of the two-pass pci initialization code. Changed code according to Kevin's review: * Fixed the bus check. * Using a pci region type array now, which indeed made the code simpler and shorter. * The memory hole stuff is gone, there is a single address space area now. cheers, Gerd PS: also available here: http://www.kraxel.org/cgit/seabios/log/?h=pci.2 Gerd Hoffmann (4): pci: add two-pass pci initialization code pci: activate two-pass pci initialization code pci: remove old pci initilaization code pci: init boot devices only on address space shortage Makefile | 2 +- src/pci.c | 3 + src/pci.h | 8 + src/pci_region.c | 77 -------- src/pciinit.c | 538 ++++++++++++++++++++++++++++++++++++------------------ src/util.h | 31 +--- 6 files changed, 377 insertions(+), 282 deletions(-) delete mode 100644 src/pci_region.c

10 years, 10 months

[PATCH 0/4] pci: two-pass initilaization.

by Gerd Hoffmann

Hi, Removed the dust from the two-pass pci initialization code and posting the bits for review to move forward. Rebased from q35 tree to latest upstream master. Uses the new pci_device struct now. cheers, Gerd Gerd Hoffmann (4): pci: add two-pass pci initialization code pci: activate two-pass pci initialization code pci: remove old pci initilaization code pci: init boot devices only on address space shortage Makefile | 2 +- src/pci.c | 3 + src/pci.h | 8 + src/pci_region.c | 77 ------- src/pciinit.c | 642 +++++++++++++++++++++++++++++++++++++++--------------- src/util.h | 31 +--- 6 files changed, 481 insertions(+), 282 deletions(-) delete mode 100644 src/pci_region.c

10 years, 10 months

[PATCH v3 2/3] Boot up with a splash picture configurable

by Wayne Xia

fix the jpeg decoder problem emerged when it was used in 24 BPP mode. Signed-off-by: Wayne Xia <xiawenc(a)linux.vnet.ibm.com> --- src/bootsplash.c | 3 ++- src/jpeg.c | 31 ++++++++++++++++++++++--------- src/jpeg.h | 4 ++-- 3 files changed, 26 insertions(+), 12 deletions(-) diff --git a/src/bootsplash.c b/src/bootsplash.c index aa2299d..2ec0857 100644 --- a/src/bootsplash.c +++ b/src/bootsplash.c @@ -256,7 +256,8 @@ enable_bootsplash(void) if (type == 0) { dprintf(5, "Decompressing bootsplash.jpg\n"); - ret = jpeg_show(jpeg, picture, width, height, depth); + ret = jpeg_show(jpeg, picture, width, height, depth, + mode_info->bytes_per_scanline); if (ret) { dprintf(1, "jpeg_show failed with return code %d...\n", ret); goto done; diff --git a/src/jpeg.c b/src/jpeg.c index 1068291..a96a9d7 100644 --- a/src/jpeg.c +++ b/src/jpeg.c @@ -394,10 +394,10 @@ void jpeg_get_size(struct jpeg_decdata *jpeg, int *width, int *height) *height = jpeg->height; } -int jpeg_show(struct jpeg_decdata *jpeg, unsigned char *pic - , int width, int height, int depth) +int jpeg_show(struct jpeg_decdata *jpeg, unsigned char *pic, int width + , int height, int depth, int bytes_per_line_dest) { - int m, mcusx, mcusy, mx, my; + int m, mcusx, mcusy, mx, my, mloffset, jpgbpl; int max[6]; if (jpeg->height != height) @@ -405,6 +405,9 @@ int jpeg_show(struct jpeg_decdata *jpeg, unsigned char *pic if (jpeg->width != width) return ERR_WIDTH_MISMATCH; + jpgbpl = width * depth / 8; + mloffset = bytes_per_line_dest > jpgbpl ? bytes_per_line_dest : jpgbpl; + mcusx = jpeg->width >> 4; mcusy = jpeg->height >> 4; @@ -434,18 +437,18 @@ int jpeg_show(struct jpeg_decdata *jpeg, unsigned char *pic switch (depth) { case 32: col221111_32(jpeg->out, - pic + (my * 16 * mcusx + mx) * 16 * 4, - mcusx * 16 * 4); + pic + (my * 16 * mloffset + mx * 16 * 4), + mloffset); break; case 24: col221111(jpeg->out, - pic + (my * 16 * mcusx + mx) * 16 * 3, - mcusx * 16 * 3); + pic + (my * 16 * mloffset + mx * 16 * 3), + mloffset); break; case 16: col221111_16(jpeg->out, - pic + (my * 16 * mcusx + mx) * (16 * 2), - mcusx * (16 * 2)); + pic + (my * 16 * mloffset + mx * 16 * 2), + mloffset); break; default: return ERR_DEPTH_MISMATCH; @@ -887,6 +890,15 @@ static void initcol(PREC q[][64]) #endif +#ifdef __LITTLE_ENDIAN +#define PIC(yin, xin, p, xout) \ +( \ + y = outy[(yin) * 8 + xin], \ + STORECLAMP(p[(xout) * 3 + 2], y + cr), \ + STORECLAMP(p[(xout) * 3 + 1], y - cg), \ + STORECLAMP(p[(xout) * 3 + 0], y + cb) \ +) +#else #define PIC(yin, xin, p, xout) \ ( \ y = outy[(yin) * 8 + xin], \ @@ -894,6 +906,7 @@ static void initcol(PREC q[][64]) STORECLAMP(p[(xout) * 3 + 1], y - cg), \ STORECLAMP(p[(xout) * 3 + 2], y + cb) \ ) +#endif #ifdef __LITTLE_ENDIAN #define PIC_16(yin, xin, p, xout, add) \ diff --git a/src/jpeg.h b/src/jpeg.h index a2ac501..2d08f45 100644 --- a/src/jpeg.h +++ b/src/jpeg.h @@ -5,7 +5,7 @@ struct jpeg_decdata; struct jpeg_decdata *jpeg_alloc(void); int jpeg_decode(struct jpeg_decdata *jpeg, unsigned char *buf); void jpeg_get_size(struct jpeg_decdata *jpeg, int *width, int *height); -int jpeg_show(struct jpeg_decdata *jpeg, unsigned char *pic - , int width, int height, int depth); +int jpeg_show(struct jpeg_decdata *jpeg, unsigned char *pic, int width + , int height, int depth, int bytes_per_line_dest); #endif -- 1.7.6.rc1.1.g2c162b

10 years, 10 months

[PATCH v3 1/3] Boot up with a splash picture configurable

by Wayne Xia

added an option to let seabios show BMP file as a logo. Signed-off-by: Wayne Xia <xiawenc(a)linux.vnet.ibm.com> --- Makefile | 4 +- src/bmp.c | 135 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/bmp.h | 28 +++++++++++ src/bootsplash.c | 109 +++++++++++++++++++++++++++++++++----------- 4 files changed, 247 insertions(+), 29 deletions(-) create mode 100644 src/bmp.c create mode 100644 src/bmp.h diff --git a/Makefile b/Makefile index a96c89d..2786c9e 100644 --- a/Makefile +++ b/Makefile @@ -15,12 +15,12 @@ SRCBOTH=misc.c pmm.c stacks.c output.c util.c block.c floppy.c ata.c mouse.c \ kbd.c pci.c serial.c clock.c pic.c cdrom.c ps2port.c smp.c resume.c \ pnpbios.c pirtable.c vgahooks.c ramdisk.c pcibios.c blockcmd.c \ usb.c usb-uhci.c usb-ohci.c usb-ehci.c usb-hid.c usb-msc.c \ - virtio-ring.c virtio-pci.c virtio-blk.c apm.c ahci.c + virtio-ring.c virtio-pci.c virtio-blk.c apm.c ahci.c bmp.c SRC16=$(SRCBOTH) system.c disk.c font.c SRC32FLAT=$(SRCBOTH) post.c shadow.c memmap.c coreboot.c boot.c \ acpi.c smm.c mptable.c smbios.c pciinit.c optionroms.c mtrr.c \ lzmadecode.c bootsplash.c jpeg.c usb-hub.c paravirt.c \ - pci_region.c biostables.c xen.c + pci_region.c biostables.c xen.c bmp.c SRC32SEG=util.c output.c pci.c pcibios.c apm.c stacks.c cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc \ diff --git a/src/bmp.c b/src/bmp.c new file mode 100644 index 0000000..b5b0dea --- /dev/null +++ b/src/bmp.c @@ -0,0 +1,135 @@ +/* +* Basic BMP data process and Raw picture data handle functions. +* Could be used to adjust pixel data format, get infomation, etc. +* +* Copyright (C) 2011 Wayne Xia <xiawenc(a)cn.ibm.com> +* +* This work is licensed under the terms of the GNU LGPLv3. +*/ +#include "util.h" +#include "bmp.h" + +#define bmp_load4byte(addr) ((addr)[0] + ((addr)[1]<<8) \ + + ((addr)[2]<<16) + ((addr)[3]<<24)) +#define bmp_load2byte(addr) ((addr)[0] + ((addr)[1]<<8)) + +typedef struct tagBITMAPFILEHEADER { + u8 bfType[2]; + u8 bfSize[4]; + u8 bfReserved1[2]; + u8 bfReserved2[2]; + u8 bfOffBits[4]; +} BITMAPFILEHEADER, tagBITMAPFILEHEADER; + +typedef struct tagBITMAPINFOHEADER { + u8 biSize[4]; + u8 biWidth[4]; + u8 biHeight[4]; + u8 biPlanes[2]; + u8 biBitCount[2]; + u8 biCompression[4]; + u8 biSizeImage[4]; + u8 biXPelsPerMeter[4]; + u8 biYPelsPerMeter[4]; + u8 biClrUsed[4]; + u8 biClrImportant[4]; +} BITMAPINFOHEADER, tagBITMAPINFOHEADER; + +typedef struct tagRGBQUAD { + u8 rgbBlue; + u8 rgbGreen; + u8 rgbRed; + u8 rgbReserved; +} RGBQUAD, tagRGBQUAD; + +/* flat picture data adjusting function +* description: +* switch the pixel RGB data sequence if flag is on +* switch the vertical line sequence if flag is on +* arrange horizontal pixel data, add extra space in the dest buffer +* for every line +* requirement: +* bytes_per_line_src <= bytes_per_line_dest +* note: +* src could be equal to dest, if u did not want to switch vertical line +* sequence +*/ +static void raw_data_format_adjust_24bpp(u8 *src, u8 *dest, int width, int height, + int bytes_per_line_src, int bytes_per_line_dest, u8 switch_flag) +{ + int cy = height; + u8 *pd, *ps, *pd_valid, *ps_lastline; + u8 t; + u8 rgb_switch_flag = switch_flag & SWITCH_RGB; + u8 line_switch_flag = switch_flag & SWITCH_LINE; + while (cy > 0) { + ps = bytes_per_line_src*cy + src - 1; + if (line_switch_flag) + pd = bytes_per_line_dest * (height - cy + 1) + dest - 1; + else + pd = bytes_per_line_dest * cy + dest - 1; + ps_lastline = ps-bytes_per_line_src; + pd_valid = pd - (bytes_per_line_dest - bytes_per_line_src); + while (pd > pd_valid) { + *pd = 0; + pd--; + } + while (ps > ps_lastline) { + if (rgb_switch_flag) { + t = *ps; + *ps = *(ps-2); + *(ps-2) = t; + } + *(pd--) = *(ps--); + *(pd--) = *(ps--); + *(pd--) = *(ps--); + } + cy--; + } +} + +struct bmp_decdata *bmp_alloc(void) +{ + struct bmp_decdata *bmp = malloc_tmphigh(sizeof(*bmp)); + return bmp; +} + +int bmp_decode(struct bmp_decdata *bmp, unsigned char *data, int data_size) +{ + if (data_size < 54) + return 1; + + u16 bmp_filehead = bmp_load2byte(data + 0); + if (bmp_filehead != 0x4d42) + return 2; + u32 bmp_recordsize = bmp_load4byte(data + 2); + if (bmp_recordsize != data_size) + return 3; + u32 bmp_dataoffset = bmp_load4byte(data + 10); + bmp->datap = (unsigned char *)data + bmp_dataoffset; + bmp->width = bmp_load4byte(data + 18); + bmp->height = bmp_load4byte(data + 22); + bmp->bpp = bmp_load2byte(data + 28); + return 0; +} + +void bmp_get_size(struct bmp_decdata *bmp, int *width, int *height) +{ + *width = bmp->width; + *height = bmp->height; +} + + +int bmp_show(struct bmp_decdata *bmp, unsigned char *pic, int width + , int height, int depth, int bytes_per_line_dest) +{ + if (bmp->datap == pic) + return 0; + /* now only support 24bpp bmp file */ + if ((depth == 24) && (bmp->bpp == 24)) { + raw_data_format_adjust_24bpp(bmp->datap, pic, width, height, + 3 * width, bytes_per_line_dest, SWITCH_LINE); + return 0; + } + return 1; +} diff --git a/src/bmp.h b/src/bmp.h new file mode 100644 index 0000000..ca16781 --- /dev/null +++ b/src/bmp.h @@ -0,0 +1,28 @@ +#ifndef BMP_H +#define BMP_H +#include "types.h" + +#define SWITCH_RGB 0x01 +#define SWITCH_LINE 0x02 + +struct bmp_decdata { + struct tagRGBQUAD *quadp; + unsigned char *datap; + int width; + int height; + int bpp; +}; + +/* allocate decdata struct */ +struct bmp_decdata *bmp_alloc(void); + +/* extract information from bmp file data */ +int bmp_decode(struct bmp_decdata *bmp, unsigned char *data, int data_size); + +/* get bmp properties */ +void bmp_get_size(struct bmp_decdata *bmp, int *width, int *height); + +/* flush flat picture data to *pc */ +int bmp_show(struct bmp_decdata *bmp, unsigned char *pic, int width + , int height, int depth, int bytes_per_line_dest); +#endif diff --git a/src/bootsplash.c b/src/bootsplash.c index cf1a603..aa2299d 100644 --- a/src/bootsplash.c +++ b/src/bootsplash.c @@ -12,7 +12,7 @@ #include "jpeg.h" // splash #include "biosvar.h" // SET_EBDA #include "paravirt.h" // romfile_find - +#include "bmp.h" /**************************************************************** * VESA structures @@ -109,7 +109,7 @@ enable_vga_console(void) static int find_videomode(struct vesa_info *vesa_info, struct vesa_mode_info *mode_info - , int width, int height) + , int width, int height, int bpp_req) { dprintf(3, "Finding vesa mode with dimensions %d/%d\n", width, height); u16 *videomodes = SEGOFF_TO_FLATPTR(vesa_info->video_mode_ptr); @@ -135,8 +135,13 @@ find_videomode(struct vesa_info *vesa_info, struct vesa_mode_info *mode_info || mode_info->y_resolution != height) continue; u8 depth = mode_info->bits_per_pixel; - if (depth != 16 && depth != 24 && depth != 32) - continue; + if (bpp_req == 0) { + if (depth != 16 && depth != 24 && depth != 32) + continue; + } else { + if (depth != bpp_req) + continue; + } return videomode; } } @@ -148,17 +153,25 @@ enable_bootsplash(void) { if (!CONFIG_BOOTSPLASH) return; + /* splash picture can be bmp or jpeg file */ dprintf(3, "Checking for bootsplash\n"); + u8 type = 0; /* 0 means jpg, 1 means bmp, default is 0=jpg */ int filesize; u8 *filedata = romfile_loadfile("bootsplash.jpg", &filesize); - if (!filedata) - return; + if (!filedata) { + filedata = romfile_loadfile("bootsplash.bmp", &filesize); + if (!filedata) + return; + type = 1; + } + dprintf(3, "start showing bootsplash\n"); - u8 *picture = NULL; + u8 *picture = NULL; /* data buff used to be flushed to the video buf */ + struct jpeg_decdata *jpeg = NULL; + struct bmp_decdata *bmp = NULL; struct vesa_info *vesa_info = malloc_tmplow(sizeof(*vesa_info)); struct vesa_mode_info *mode_info = malloc_tmplow(sizeof(*mode_info)); - struct jpeg_decdata *jpeg = jpeg_alloc(); - if (!jpeg || !vesa_info || !mode_info) { + if (!vesa_info || !mode_info) { warn_noalloc(); goto done; } @@ -184,20 +197,48 @@ enable_bootsplash(void) vesa_info->vesa_version>>8, vesa_info->vesa_version&0xff, vendor, product); - // Parse jpeg and get image size. - dprintf(5, "Decoding bootsplash.jpg\n"); - int ret = jpeg_decode(jpeg, filedata); - if (ret) { - dprintf(1, "jpeg_decode failed with return code %d...\n", ret); - goto done; + int ret, width, height; + int bpp_require = 0; + if (type == 0) { + jpeg = jpeg_alloc(); + if (!jpeg) { + warn_noalloc(); + goto done; + } + /* Parse jpeg and get image size. */ + dprintf(5, "Decoding bootsplash.jpg\n"); + ret = jpeg_decode(jpeg, filedata); + if (ret) { + dprintf(1, "jpeg_decode failed with return code %d...\n", ret); + goto done; + } + jpeg_get_size(jpeg, &width, &height); + } else { + bmp = bmp_alloc(); + if (!bmp) { + warn_noalloc(); + goto done; + } + /* Parse bmp and get image size. */ + dprintf(5, "Decoding bootsplash.bmp\n"); + ret = bmp_decode(bmp, filedata, filesize); + if (ret) { + dprintf(1, "bmp_decode failed with return code %d...\n", ret); + goto done; + } + bmp_get_size(bmp, &width, &height); + bpp_require = 24; } - int width, height; - jpeg_get_size(jpeg, &width, &height); + /* jpeg would use 16 or 24 bpp video mode, BMP use 24bpp mode only */ // Try to find a graphics mode with the corresponding dimensions. - int videomode = find_videomode(vesa_info, mode_info, width, height); - if (videomode < 0) + int videomode = find_videomode(vesa_info, mode_info, width, height, + bpp_require); + if (videomode < 0) { + dprintf(1, "failed to find a videomode with %dx%d %dbpp (0=any).\n", + width, height, bpp_require); goto done; + } void *framebuffer = mode_info->phys_base_ptr; int depth = mode_info->bits_per_pixel; dprintf(3, "mode: %04x\n", videomode); @@ -206,17 +247,28 @@ enable_bootsplash(void) dprintf(3, "bits per pixel: %d\n", depth); // Allocate space for image and decompress it. - int imagesize = width * height * (depth / 8); + int imagesize = height * mode_info->bytes_per_scanline; picture = malloc_tmphigh(imagesize); if (!picture) { warn_noalloc(); goto done; } - dprintf(5, "Decompressing bootsplash.jpg\n"); - ret = jpeg_show(jpeg, picture, width, height, depth); - if (ret) { - dprintf(1, "jpeg_show failed with return code %d...\n", ret); - goto done; + + if (type == 0) { + dprintf(5, "Decompressing bootsplash.jpg\n"); + ret = jpeg_show(jpeg, picture, width, height, depth); + if (ret) { + dprintf(1, "jpeg_show failed with return code %d...\n", ret); + goto done; + } + } else { + dprintf(5, "Decompressing bootsplash.bmp\n"); + ret = bmp_show(bmp, picture, width, height, depth, + mode_info->bytes_per_scanline); + if (ret) { + dprintf(1, "bmp_show failed with return code %d...\n", ret); + goto done; + } } /* Switch to graphics mode */ @@ -231,7 +283,7 @@ enable_bootsplash(void) } /* Show the picture */ - dprintf(5, "Showing bootsplash.jpg\n"); + dprintf(5, "Showing bootsplash picture\n"); iomemcpy(framebuffer, picture, imagesize); dprintf(5, "Bootsplash copy complete\n"); BootsplashActive = 1; @@ -241,7 +293,10 @@ done: free(picture); free(vesa_info); free(mode_info); - free(jpeg); + if (jpeg != NULL) + free(jpeg); + if (bmp != NULL) + free(bmp); return; } -- 1.7.6.rc1.1.g2c162b

10 years, 10 months

[PATCH] Replace CONFIG_PCI_ROOT1/2 with CONFIG_EXTRA_PCI_ROOTS.

by Kevin O'Connor

Instead of defining the bus id of each extra root bus, define the number of extra root buses. The bus id isn't necessarily stable from one boot to the next. --- src/Kconfig | 20 ++++++++------------ src/pci.c | 10 ++++------ 2 files changed, 12 insertions(+), 18 deletions(-) diff --git a/src/Kconfig b/src/Kconfig index bbed963..70e3509 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -201,19 +201,15 @@ menu "Hardware support" Support parallel ports. This also enables int 17 parallel port calls. config EXTRA_PCI_ROOTS - bool "Extra root buses" - default n + int "Number of extra root buses" + default 0 help - If the target machine has multiple independent root buses, - the extra buses may be specified here. - config PCI_ROOT1 - depends on EXTRA_PCI_ROOTS - hex "Extra primary PCI root bus number" - default 0x00 - config PCI_ROOT2 - depends on EXTRA_PCI_ROOTS - hex "Extra secondary PCI root bus number" - default 0x00 + If the target machine has multiple independent root buses + set this to a positive value. The SeaBIOS PCI probe will + then search for the given number of extra root buses. + + Most machines do not have multiple root buses and this + setting should be zero. config USE_SMM depends on !COREBOOT diff --git a/src/pci.c b/src/pci.c index 0de8ec5..23a6878 100644 --- a/src/pci.c +++ b/src/pci.c @@ -93,16 +93,12 @@ void pci_probe(void) { dprintf(3, "PCI probe\n"); - if (CONFIG_PCI_ROOT1 && CONFIG_PCI_ROOT1 > MaxPCIBus) - MaxPCIBus = CONFIG_PCI_ROOT1; - if (CONFIG_PCI_ROOT2 && CONFIG_PCI_ROOT2 > MaxPCIBus) - MaxPCIBus = CONFIG_PCI_ROOT2; - struct pci_device *busdevs[256]; memset(busdevs, 0, sizeof(busdevs)); struct pci_device **pprev = &PCIDevices; int bus = -1, lastbus = 0, rootbuses = 0, count=0; - while (bus < MaxPCIBus) { + while (bus < 0xff && (bus < MaxPCIBus + || rootbuses < CONFIG_EXTRA_PCI_ROOTS)) { bus++; int bdf; foreachbdf(bdf, bus) { @@ -125,6 +121,8 @@ pci_probe(void) rootbuses++; lastbus = bus; rootbus = rootbuses; + if (bus > MaxPCIBus) + MaxPCIBus = bus; } else { rootbus = parent->rootbus; } -- 1.7.4.4

10 years, 10 months

[PATCH 0/4] More 'struct pci' enhancements

by Kevin O'Connor

More cleanups and enhancements. This series simplifies pci_next() so that it no longer needs to check for pci bridges. The vgahook changes in the first patch were compile tested only. -Kevin Kevin O'Connor (4): Calculate vgahook responses during setup instead of in 16bit code. Convert pci_find_device/class to use 'struct pci_device'. Convert remaining callers of foreachbdf to foreachbdf_in_bus. Rename foreachbdf_in_bus to foreachbdf and simplify it. src/acpi.c | 2 +- src/coreboot.c | 9 +- src/floppy.c | 4 +- src/optionroms.c | 3 +- src/pci.c | 173 ++++++++++++++++------------------ src/pci.h | 21 ++--- src/pcibios.c | 55 ++++++----- src/pciinit.c | 6 +- src/shadow.c | 4 +- src/smm.c | 10 +- src/usb-ehci.c | 3 +- src/util.h | 5 +- src/vgahooks.c | 274 ++++++++++++++++++++++-------------------------------- 13 files changed, 255 insertions(+), 314 deletions(-) -- 1.7.4.4

10 years, 10 months

[PATCH v2 0/2] Boot up with a splash picture configurable, testing about it

by Wayne Xia

Hi, I wanted to directly sent the qemu binaries for test, but it seems too big, so I attach the patch for qemu about the feature, to help validate the seabios patch. With the patched qemu compiled: Alternate the bios.bin that qemu used to the patched, put the logo picture in the pc-bios folder or other place, invoker it as following: qemu-system-x86_64 -boot splash_time=<N>,splash_filename=<N> Time unit is ms. Default splash picture is bootsplash.bmp stored in the directory where bios.bin stay. eg: qemu-system-x86_64 -boot splash_time=20000,splash_filename=/home/xiawenc/bootsplash.bmp qemu in 32bit mode could be applied also. limitation: jpeg decoder have its limitation, it only accept jpg file with width=16*N, height=16*N. Strange thing is for some picture it have a good visual effect, while some with observable quality loss. bmp decoder only accept 24bpp file, with a resolution that a VESA mode could support. Recommended is 640x480(mostly used). note: It seems the latest qemu code from git have some problem in compiling and its TCG. If this problem still exist when u get it, following could solve it: git reset --hard f44c99607a46484c52f03aed373e3a3a194af721 invoke it with option --enable-kvm, to bypass TCG. If you get a better method to share the testing binaries, pls let me know. Feel free to put any comments. Best Regards Wayne Xia mail:xiawenc@linux.vnet.ibm.com tel:86-010-82450803

10 years, 10 months

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

SeaBIOS July 2011