YABEL update
- drop x86emu + old biosemu in favor of YABEL - Add YABEL_DIRECTHW to get the old biosemu behavior - add support for vesa console using YABEL - add coreboot table entry with console information - add bootsplash support (reads /bootsplash.jpg from CBFS) Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Pattrick Hueper <phueper@hueper.net> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5135 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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Stefan Reinauer
Stefan Reinauer
parent
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commit
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18 changed files with 1506 additions and 816 deletions
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@ -1,7 +1,7 @@
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##
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## This file is part of the coreboot project.
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##
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## Copyright (C) 2007 coresystems GmbH
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## Copyright (C) 2007-2010 coresystems GmbH
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## (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
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##
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## This program is free software; you can redistribute it and/or modify
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@ -49,7 +49,7 @@ choice
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depends on PCI_ROM_RUN || VGA_ROM_RUN
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config PCI_OPTION_ROM_RUN_REALMODE
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prompt "Real mode"
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prompt "Native mode"
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bool
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depends on ARCH_X86
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help
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@ -58,37 +58,60 @@ config PCI_OPTION_ROM_RUN_REALMODE
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so this is the fastest, but also the least secure option.
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(only works on x86/x64 systems)
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config PCI_OPTION_ROM_RUN_X86EMU
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prompt "x86emu"
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config PCI_OPTION_ROM_RUN_YABEL
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prompt "Secure Mode"
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bool
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help
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If you select this option, the x86emu CPU emulator will be used to
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execute PCI option ROMs.
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When choosing this option, x86emu will pass through all hardware
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accesses to memory and IO devices to the underlying memory and IO
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addresses. While this option prevents option ROMs from doing dirty
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tricks with the CPU (such as installing SMM modules or hypervisors),
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they can still access all devices in the system.
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Choosing x86emu, option ROM execution is slower than native execution
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in real mode, but faster than the full system emulation YABEL
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This is the default choice for non-x86 systems.
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config PCI_OPTION_ROM_RUN_YABEL
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prompt "YABEL"
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bool
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help
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If you select this option, the YABEL system emulator will be used to
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execute PCI option ROMs.
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YABEL consists of two parts: It uses x86emu for the CPU emulation and
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additionally provides a PC system emulation that filters bad device and
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memory access (such as PCI config space access to other devices than the
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initialized one).
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This option best prevents option ROMs from doing dirty tricks with the
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This option prevents option ROMs from doing dirty tricks with the
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system (such as installing SMM modules or hypervisors), but it is also
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significantly slower than the other option ROM initialization methods.
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significantly slower than the native option ROM initialization method.
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This is the default choice for non-x86 systems.
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endchoice
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# TODO: Describe better, and/or make a "choice" selection for this.
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config YABEL_DEBUG_FLAGS
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prompt "Hex value for YABEL debug flags"
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hex
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default 0x0
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depends on PCI_OPTION_ROM_RUN_YABEL
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help
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Set CONFIG_YABEL_DEBUG_FLAGS is a binary switch that allows you
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to select the following items to debug. 1=on 0=off. After you
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decide what you want to debug create the binary value, convert to hex
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and set the Option (Ex. CONFIG_YABEL_DEBUG_FLAGS = 0x31FF //Debug All).
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|-DEBUG_JMP - print info about JMP and RETF opcodes from x86emu
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||-DEBUG_TRACE_X86EMU - print _all_ opcodes that are executed by x86emu (WARNING: this will produce a LOT of output)
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|||-Currently unused
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||||-Currently unused
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|||||-Currently unused
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||||||-DEBUG_PNP - Print Plug And Play access made by option rom
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|||||||-DEBUG_DISK - Print Disk I/O related messages, currently unused
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||||||||-DEBUG_PMM - Print messages related to POST Memory Manager (PMM)
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|||||||||-DEBUG_VBE - Print messages related to VESA BIOS Extension (VBE) functions
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||||||||||-DEBUG_PRINT_INT10 - let INT10 (i.e. character output) calls print messages to Debug output
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|||||||||||-DEBUG_INTR - Print messages related to interrupt handling
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||||||||||||-DEBUG_CHECK_VMEM_ACCESS - Print messages related to accesse to certain areas of the virtual Memory (e.g. BDA (BIOS Data Area) or Interrupt Vectors)
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|||||||||||||-DEBUG_MEM - Print memory access made by option rom (NOTE: this also includes accesses to fetch instructions)
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||||||||||||||-DEBUG_IO - Print I/O access made by option rom
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11000111111111 - Max Binary Value, Debug All (WARNING: - This could run for hours)
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DEBUG_IO 0x0001
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DEBUG_MEM 0x0002
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DEBUG_CHECK_VMEM_ACCESS 0x0004
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DEBUG_INTR 0x0008
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DEBUG_PRINT_INT10 0x0010
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DEBUG_VBE 0x0020
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DEBUG_PMM 0x0040
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DEBUG_DISK 0x0080
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DEBUG_PNP 0x0100
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DEBUG_TRACE_X86EMU 0x1000
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DEBUG_JMP 0x2000
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See debug.h for values 0 is no debug output, 0x31ff is _verbose_.
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config YABEL_PCI_ACCESS_OTHER_DEVICES
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prompt "Allow option roms to acces other devices"
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bool
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@ -102,20 +125,56 @@ config YABEL_PCI_ACCESS_OTHER_DEVICES
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config YABEL_VIRTMEM_LOCATION
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prompt "Location of YABEL's virtual memory"
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hex
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depends on EXPERT
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depends on PCI_OPTION_ROM_RUN_YABEL && EXPERT
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default 0x1000000
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help
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YABEL requires 1MB memory for its CPU emulation. This memory is
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normally located at 16MB.
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# TODO: Describe better, and/or make a "choice" selection for this.
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config YABEL_DEBUG_FLAGS
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prompt "Hex value for YABEL debug flags"
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hex
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default 0x0
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config YABEL_DIRECTHW
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prompt "Direct Hardware Access"
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bool
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depends on PCI_OPTION_ROM_RUN_YABEL
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help
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See debug.h for values 0 is no debug output, 0x31ff is _verbose_.
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YABEL consists of two parts: It uses x86emu for the CPU emulation and
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additionally provides a PC system emulation that filters bad device and
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memory access (such as PCI config space access to other devices than the
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initialized one).
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When choosing this option, x86emu will pass through all hardware
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accesses to memory and IO devices to the underlying memory and IO
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addresses. While this option prevents option ROMs from doing dirty
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tricks with the CPU (such as installing SMM modules or hypervisors),
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they can still access all devices in the system.
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Enable this option for a good compromise between security and speed.
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config BOOTSPLASH
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prompt "Show graphical bootsplash"
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bool
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depends on PCI_OPTION_ROM_RUN_YABEL
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help
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This option shows a graphical bootsplash screen. The grapics are
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loaded from the CBFS file bootsplash.jpg
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config FRAMEBUFFER_VESA_MODE
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prompt "VESA framebuffer video mode"
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hex
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default 0x117
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depends on BOOTSPLASH
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help
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This option sets the resolution used for the coreboot framebuffer and
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bootsplash screen. Set to 0x117 for 1024x768x16. A diligent soul will
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some day make this a "choice".
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config COREBOOT_KEEP_FRAMEBUFFER
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prompt "Keep VESA framebuffer"
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bool
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depends on BOOTSPLASH
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help
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This option keeps the framebuffer mode set after coreboot finishes
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execution. If this option is enabled, coreboot will pass a framebuffer
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entry in its coreboot table and the payload will need a framebuffer
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driver. If this option is disabled, coreboot will switch back to
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text mode before handing control to a payload.
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config CONSOLE_VGA_MULTI
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bool
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