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cbb8d8ad24
the system boot to a command line. This patch comments out the code to set up the vga framebuffer to allow the system to boot, without this fix the system hangs during elfboot. The only line that is absolutely necessary to change is the SMRAM setup, however I've commented out all vga setup to make it very obvious to both the kernel/payload and anyone looking at the code that vga isn't currently working. This setup might also be better handled in northbridge.c, if it doesn't need to be done before ram init, yet another reason to comment it all. In the future, LinuxBIOS needs to be told that the graphics memory area, 1mb or 512kb (at the user or developer's option), is reserved for the onchip vga, but I'm not sure if it's taken at the top or bottom of the memory, yet. LB may also need to set a base address for the AGP aperture and/or be told that range is reserved as well, whether this was originally the job of the system bios or vga bios is still a mystery. It also corrects the number of entries in irq_tables.c, without this fix the kernel would probably complain and hang due to unmapped IRQs. Signed-off-by: Corey Osgood <corey.osgood@gmail.com> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2725 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 |
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------------------------------------------------------------------------------- LinuxBIOS README ------------------------------------------------------------------------------- LinuxBIOS is a Free Software project aimed at replacing the proprietary BIOS you can find in most of today's computers. It performs just a little bit of hardware initialization and then executes one of many possible payloads, e.g. a Linux kernel. Payloads -------- After the basic initialization of the hardware has been performed, any desired "payload" can be started by LinuxBIOS. Examples include: * A Linux kernel * FILO (a simple bootloader with filesystem support) * GRUB2 (a free bootloader; support is in development) * OpenBIOS (a free IEEE1275-1994 Open Firmware implementation) * Open Firmware (a free IEEE1275-1994 Open Firmware implementation) * SmartFirmware (a free IEEE1275-1994 Open Firmware implementation) * GNUFI (a free, UEFI-compatible firmware) * Etherboot (for network booting and booting from raw IDE or FILO) * ADLO (for booting Windows 2000 or OpenBSD) * Plan 9 (a distributed operating system) * memtest86 (for testing your RAM) Supported Hardware ------------------ LinuxBIOS supports a wide range of chipsets, devices, and mainboards. For details please consult: * http://www.linuxbios.org/Supported_Motherboards * http://www.linuxbios.org/Supported_Chipsets_and_Devices Website and Mailing List ------------------------ Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the LinuxBIOS website: http://www.linuxbios.org You can contact us directly on the LinuxBIOS mailing list: http://www.linuxbios.org/Mailinglist Copyright and License --------------------- The copyright on LinuxBIOS is owned by quite a large number of individual developers and companies. Please check the individual source files for details. LinuxBIOS is licensed under the terms of the GNU General Public License (GPL). Some files are licensed under the "GPL (version 2, or any later version)", and some files (mostly those derived from the Linux kernel) are licensed under the "GPL, version 2". For some parts, which were derived from other projects, other (GPL-compatible) licenses may apply. Please check the individual source files for details. This makes the resulting LinuxBIOS images licensed under the GPL, version 2.