7f87812c30
This patch improves the image resampling (scaling) code in CBGFX to use the Lanczos algorithm that is widely considered the "best" resampling algorithm (e.g. also the first choice in Python's PIL library). It is of course much more elaborate and therefore slower than bilinear resampling, but a lot of the difference can be made up with optimizations, and the resulting code was found to still produce acceptable speeds for existing Chrome OS UI use cases (on an Arm Cortex-A55 device, time to scale an image to 1101x593 went from ~88ms to ~275ms, a little over 3x slowdown). Nevertheless, if this should be too slow for anyone there's also an option to tune it down a little, but still much better than bilinear (same operation was ~170ms with this). Example images (scaled up by a factor of 7): Old (bilinear): https://i.imgur.com/ytr2n4Z.png New (Lanczos a=3): https://i.imgur.com/f0vKluM.png Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: Idde6f61865bfac2801ee4fff40ac64e4ebddff1a Reviewed-on: https://review.coreboot.org/c/coreboot/+/42792 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com> Reviewed-by: Hung-Te Lin <hungte@chromium.org>
473 lines
12 KiB
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473 lines
12 KiB
Text
##
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##
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## Copyright (C) 2008 Advanced Micro Devices, Inc.
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## Copyright (C) 2008 coresystems GmbH
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##
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## Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following conditions
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## are met:
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## 1. Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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## 2. Redistributions in binary form must reproduce the above copyright
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## notice, this list of conditions and the following disclaimer in the
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## documentation and/or other materials provided with the distribution.
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## 3. The name of the author may not be used to endorse or promote products
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## derived from this software without specific prior written permission.
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##
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## THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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## ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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## IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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## ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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## FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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## DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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## OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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## HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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## LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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## OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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## SUCH DAMAGE.
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##
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mainmenu "Libpayload Configuration"
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menu "Generic Options"
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config GPL
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bool "GPLv2-licensed Options"
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default y if CHROMEOS
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default n
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help
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Prompt for options that will build code licensed under the GNU General
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Public License (version 2). This will subject the whole payload to the
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terms of this license (including its provision to release all sources,
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please see the LICENSE_GPL file for details).
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config EXPERIMENTAL
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bool "Experimental Options"
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default n
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help
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Prompt for experimental functionality. Attention: This is not likely
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to work without problems
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config DEVELOPER
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bool "Developer Options"
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default n
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help
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Prompt for developer options. These options are only interesting for
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libpayload developers.
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config CHROMEOS
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bool "Chrome OS Options"
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default n
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help
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Select configuration defaults appropriate for Chrome OS boards.
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choice
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prompt "Compiler to use"
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default COMPILER_GCC
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help
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This option allows you to select the compiler.
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config COMPILER_GCC
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bool "GCC"
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help
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Use the GNU Compiler Collection (GCC).
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config COMPILER_LLVM_CLANG
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bool "LLVM/clang"
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help
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Use LLVM/clang.
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endchoice
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config REMOTEGDB
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bool "Remote GDB stub"
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default n
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depends on GPL
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help
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Enable Remote GDB debugging support.
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config MEMMAP_RAM_ONLY
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bool "Only consider RAM entries in memory map for further processing"
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default n
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endmenu
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menu "Architecture Options"
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choice
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prompt "Target Architecture"
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default ARCH_X86
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config ARCH_ARM
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bool "ARM"
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help
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Support the ARM architecture
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config ARCH_X86
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bool "x86"
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help
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Support the x86 architecture
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config ARCH_ARM64
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bool "ARM64"
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help
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Support the ARM64 architecture
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endchoice
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config MULTIBOOT
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bool "Multiboot header support"
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depends on ARCH_X86
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default y if !CHROMEOS
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config HEAP_SIZE
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int "Heap size"
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default 131072
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help
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This is the heap size (malloc'able size) available
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to the payload.
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If unsure, set to 131072 (128K)
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config STACK_SIZE
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int "Stack size"
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default 16384
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help
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This is the stack size available to the payload.
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If unsure, set to 16384 (16K)
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config BASE_ADDRESS
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hex "Base address"
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default 0x04000000 if ARCH_ARM
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default 0x80100000 if ARCH_ARM64
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default 0x00100000 if ARCH_X86
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help
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This is the base address for the payload.
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If unsure, set to 0x00100000 on x86,
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0x04000000 on ARM or 0x80100000 on ARM64.
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endmenu
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config USE_MARCH_586
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bool "Use march=586 qualifier to build"
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default n
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depends on ARCH_X86
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help
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Allow a platform or processor to select to be compiled using
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the '-march=i586' option instead of the typical '-march=i686'
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menu "Standard Libraries"
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config LIBC
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bool "Enable C library support"
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default y
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config CURSES
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bool "Build a curses library"
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default y if !CHROMEOS
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choice
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prompt "Curses implementation"
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default PDCURSES
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depends on CURSES
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config TINYCURSES
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bool "TinyCurses"
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help
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TinyCurses was the first curses implementation for libpayload.
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It features low memory consumption, static allocation of larger
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data structures (so few or no memory allocation calls) and a
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reduced feature set.
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config PDCURSES
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bool "PDCurses"
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help
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libpayload's PDCurses port provides a full features curses
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implementation, including libpanel, libmenu and libform (which
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are taken from ncurses).
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It requires more system resources, in particularily heap memory.
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endchoice
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config CBFS
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bool "CBFS support"
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default y
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help
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CBFS is the archive format of coreboot
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config LZMA
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bool "LZMA decoder"
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default y
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help
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LZMA decoder implementation, usable eg. by CBFS,
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but also externally.
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config LZ4
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bool "LZ4 decoder"
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default y
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help
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Decoder implementation for the LZ4 compression algorithm.
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Adds standalone functions (CBFS support coming soon).
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endmenu
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menu "Console Options"
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config SKIP_CONSOLE_INIT
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bool "Skip initializing the consoles at startup"
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default y if CHROMEOS
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default n
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help
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Normally, libpayload will initialize console input/output on startup
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before the payload itself gets control. This option disables that
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behavior and leaves console initialization up to the payload.
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config CBMEM_CONSOLE
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bool "Send output to the in memory CBMEM console"
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default y
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config SERIAL_CONSOLE
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bool "See output on the serial port console"
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default y
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config 8250_SERIAL_CONSOLE
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bool "8250-compatible serial port driver (including IO and MMIO)"
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depends on SERIAL_CONSOLE
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default y if ARCH_X86
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config S5P_SERIAL_CONSOLE
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bool "Exynos SOC, S5P compatible serial port driver"
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depends on SERIAL_CONSOLE
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default n
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config IPQ806X_SERIAL_CONSOLE
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bool "IPQ806x SOC compatible serial port driver"
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depends on SERIAL_CONSOLE
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default n
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config IPQ40XX_SERIAL_CONSOLE
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bool "IPQ40xx SOC compatible serial port driver"
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depends on SERIAL_CONSOLE
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default n
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config QCS405_SERIAL_CONSOLE
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bool "QCS405 SOC compatible serial port driver"
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depends on SERIAL_CONSOLE
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default n
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config QUALCOMM_QUPV3_SERIAL_CONSOLE
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bool "Qualcomm QUPV3 serial port driver"
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depends on SERIAL_CONSOLE
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default n
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config PL011_SERIAL_CONSOLE
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bool "PL011 compatible serial port driver"
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depends on 8250_SERIAL_CONSOLE
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default n
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config SERIAL_IOBASE
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## This default is currently not used on non-x86 systems.
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hex "Default I/O base for the serial port (default 0x3f8)"
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depends on SERIAL_CONSOLE && ARCH_X86
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default 0x3f8
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config SERIAL_SET_SPEED
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bool "Override the serial console baud rate"
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default n
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depends on SERIAL_CONSOLE
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config SERIAL_BAUD_RATE
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int "Serial console baud rate (default 115200)"
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depends on SERIAL_SET_SPEED
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default 115200
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config SERIAL_ACS_FALLBACK
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bool "Use plain ASCII characters for ACS"
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default n
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depends on SERIAL_CONSOLE
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help
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The alternate character set (ACS) is used for drawing lines and
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displaying a couple of other special graphics characters. The
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ACS characters generally look good on screen, but can be difficult
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to cut and paste from a terminal window to a text editor.
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Say 'y' here if you want to always use plain ASCII characters to
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approximate the appearance of ACS characters on the serial port
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console.
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config VIDEO_CONSOLE
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bool "See output on a video console"
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default y
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config VGA_VIDEO_CONSOLE
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bool "VGA video console driver"
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depends on ARCH_X86 && VIDEO_CONSOLE
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default y if !CHROMEOS
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config GEODELX_VIDEO_CONSOLE
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bool "Geode LX video console driver"
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depends on ARCH_X86 && VIDEO_CONSOLE
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default n
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config COREBOOT_VIDEO_CONSOLE
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bool "coreboot video console driver"
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depends on VIDEO_CONSOLE && !GEODELX_VIDEO_CONSOLE
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default y if CHROMEOS
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default n
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help
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Say Y here if coreboot switched to a graphics mode and
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your payload wants to use it.
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config COREBOOT_VIDEO_CENTERED
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bool "Center a classic 80x25 console on bigger screens"
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depends on COREBOOT_VIDEO_CONSOLE
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help
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Say 'y' here if your payload is hardcoded to a 80x25 console. Otherwise
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its output would look squeezed into the upper-left corner of the screen.
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config FONT_SCALE_FACTOR
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int "Scale factor for the included font"
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depends on GEODELX_VIDEO_CONSOLE || COREBOOT_VIDEO_CONSOLE
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default 0
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help
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By default (value of 0), the scale factor is automatically
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calculated to ensure at least 130 columns (when possible).
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config CBGFX_FAST_RESAMPLE
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bool "CBGFX: use faster (less pretty) image scaling"
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default n
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help
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When payloads use the CBGFX library to draw .BMPs on the screen,
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they will be resampled with an anti-aliasing filter to scale to the
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requested output size. The default implementation should normally be
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fast enough, but if desired this option can make it about 50-100%
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faster at the cost of quality. (It changes the 'a' parameter in the
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Lanczos resampling algorithm from 3 to 2.)
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Only affects .BMPs that aren't already provided at the right size.
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config PC_I8042
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bool "A common PC i8042 driver"
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default y if PC_KEYBOARD || PC_MOUSE
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default n
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help
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To be used by PC_KEYBOARD and PC_MOUSE.
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config PC_MOUSE
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bool "Allow input from a PC mouse"
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default n if CHROMEOS
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default y if ARCH_X86 # uses IO
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default n
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help
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PS/2 mouse driver on top of PC_I8042.
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config PC_KEYBOARD
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bool "Allow input from a PC keyboard"
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default y if ARCH_X86 # uses IO
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default n
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config PC_KEYBOARD_AT_TRANSLATED
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bool "AT Translation keyboard device"
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default n
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config PC_KEYBOARD_LAYOUT_US
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bool "English (US) keyboard layout"
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depends on PC_KEYBOARD
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default y
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config PC_KEYBOARD_LAYOUT_DE
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bool "German keyboard layout"
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depends on PC_KEYBOARD
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default n
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endmenu
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menu "Drivers"
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config PCI
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bool "Support for PCI devices"
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depends on ARCH_X86 # for now
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default y
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config NVRAM
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bool "Support for reading/writing NVRAM bytes"
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depends on ARCH_X86 # for now
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default y
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config MOUSE_CURSOR
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bool "Support for mouse cursor handling"
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default y if PC_MOUSE
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default n
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help
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Provides a common interface for various mouse cursor drivers.
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* Supports up to 32 buttons.
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* Supports 3 axis mice.
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* Applies simple cursor acceleration.
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* Allows to set cursor acceleration and cursor speed.
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config RTC_PORT_EXTENDED_VIA
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bool "Extended RTC ports are 0x74/0x75"
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default n
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help
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For recent chipsets with 256 NVRAM bytes, you have to access the
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upper 128 bytes (128-255) using two different I/O ports,
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usually 0x72/0x73.
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On some chipsets this can be a different set of ports, though.
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The VIA VT8237R for example only recognizes the ports 0x74/0x75
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for accessing the high 128 NVRAM bytes (as seems to be the case for
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multiple VIA chipsets).
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If you want to read or write CMOS bytes on computers with one of
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these chipsets, say 'y' here.
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config SPEAKER
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bool "Support for PC speaker"
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depends on ARCH_X86
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default y if !CHROMEOS
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source "drivers/timer/Kconfig"
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source "drivers/storage/Kconfig"
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source "drivers/usb/Kconfig"
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endmenu
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menu "Debugging"
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depends on DEVELOPER
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config DEBUG_MALLOC
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bool "Debug memory allocator"
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default n
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help
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Select this option if you want to debug the memory allocator. This
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option logs all uses of the following functions:
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void free(void *ptr);
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void *malloc(size_t size);
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void *calloc(size_t nmemb, size_t size);
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void *realloc(void *ptr, size_t size);
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void *memalign(size_t align, size_t size);
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Say N here unless you are debugging memory allocator problems.
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endmenu
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config BIG_ENDIAN
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default n
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bool
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config LITTLE_ENDIAN
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default n
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bool
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config IO_ADDRESS_SPACE
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default n
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bool
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help
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This option is turned on if the target system has a separate
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IO address space. This is typically only the case on x86.
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source "arch/arm/Kconfig"
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source "arch/arm64/Kconfig"
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source "arch/x86/Kconfig"
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