Update to this very old document

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4155 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stefan Reinauer 2009-04-21 21:45:11 +00:00 committed by Stefan Reinauer
parent df444bf68a
commit ebf2589e3b
6 changed files with 454 additions and 1839 deletions

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@ -1,6 +1,6 @@
%
% This document is released under the GPL
% Initially written by Stefan Reinauer, <stepan@openbios.org>
% Initially written by Stefan Reinauer, <stepan@coresystems.de>
%
\documentclass[titlepage,12pt]{article}
@ -18,10 +18,10 @@
colorlinks=false,
% pdfpagemode=None, % PDF-Viewer starts without TOC
% pdfstartview=FitH,
pdftitle={LinuxBIOS on AMD64},
pdftitle={coreboot on AMD64},
pdfauthor={Stefan Reinauer},
pdfsubject={LinuxBIOS configuration and build process},
pdfkeywords={LinuxBIOS, Opteron, AMD64, Athlon64, Build}
pdfsubject={coreboot configuration and build process},
pdfkeywords={coreboot, Opteron, AMD64, configuration, Build}
}
@ -30,9 +30,9 @@
\setlength{\parindent}{0pt}
\title{LinuxBIOS on AMD64}
\author{Stefan Reinauer $<$stepan@openbios.org$>$}
\date{June 2nd, 2004}
\title{coreboot on AMD64}
\author{Stefan Reinauer $<$stepan@coresystems.de$>$}
\date{April 19th, 2009}
\begin{document}
@ -50,12 +50,12 @@
\section{Abstract}
This document targets porting LinuxBIOS to new mainboards and creating
custom firmware images using LinuxBIOS. It describes how to build
LinuxBIOS images for the AMD64 platform, including hypertransport
This document targets porting coreboot to new mainboards and creating
custom firmware images using coreboot. It describes how to build
coreboot images for the AMD64 platform, including hypertransport
configuration and pertinent utilities. If you are missing information or
find errors in the following descriptions, contact
\href{mailto:stepan@openbios.org}{\textit{Stefan Reinauer $<$stepan@openbios.org$>$}}
\href{mailto:stepan@coresystems.de}{\textit{Stefan Reinauer $<$stepan@coresystems.de$>$}}
%
@ -64,6 +64,7 @@ find errors in the following descriptions, contact
\section{Changes}
\begin{itemize}
\item 2009/04/19 replace LinuxBIOS with coreboot
\item 2004/06/02 url and language fixes from Ken Fuchs $<$kfuchs@winternet.com$>$
\item 2004/02/10 acpi and option rom updates
\item 2003/11/18 initial release
@ -72,22 +73,22 @@ find errors in the following descriptions, contact
%
% 3 What is LinuxBIOS
% 3 What is coreboot
%
\section{What is LinuxBIOS?}
\section{What is coreboot?}
LinuxBIOS aims to replace the normal BIOS found on PCs, Alphas, and
other machines with a Linux kernel that can boot Linux from a cold
start. The startup code of an average LinuxBIOS port is about 500 lines
of assembly and 5000 lines of C. It executes 16 instructions to get into
32bit mode and then performs DRAM and other hardware initializations
coreboot aims to replace the normal BIOS found on x86, AMD64, PPC,
Alpha, and other machines with a Linux kernel that can boot Linux from a cold
start. The startup code of an average coreboot port is about 500 lines of
assembly and 5000 lines of C. It executes 16 instructions to get into 32bit
protected mode and then performs DRAM and other hardware initializations
required before Linux can take over.
The projects primary motivation initially was maintenance of large
clusters. Not surprisingly interest and contributions have come from
people with varying backgrounds. Nowadays a large and growing number of
Systems can be booted with LinuxBIOS, including embedded systems,
Systems can be booted with coreboot, including embedded systems,
Desktop PCs and Servers.
%
@ -95,7 +96,7 @@ Desktop PCs and Servers.
%
\section{Build Requirements}
To build LinuxBIOS for AMD64 from the sources you need a recent Linux
To build coreboot for AMD64 from the sources you need a recent Linux
system for x86 or AMD64. SUSE Linux 8.2 or 9.0 are known to work fine.
The following toolchain is recommended:
@ -116,31 +117,23 @@ The following toolchain is recommended:
\section{Getting the Sources}
The latest LinuxBIOS sources are available via CVS. The CVS repository
is maintained at SourceForge.net (the project name is \emph{FreeBIOS}).
First you should create a directory for your LinuxBIOS trees:
The latest coreboot sources are available via subversion. The subversion
repository is maintained at SourceForge.net (the project name is
\emph{FreeBIOS}). First you should create a directory for your
coreboot trees:
{ \small
\begin{verbatim}
$ mkdir linuxbios
$ cd linuxbios
$ mkdir coreboot
$ cd coreboot
\end{verbatim}
}
You can get the entire source tree via CVS:
You can get the entire source tree via SVN:
{ \small
\begin{verbatim}
$ cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/freebios login
\end{verbatim}
}
Hit return when you are asked for a password. Then checkout (or update)
the freebios source tree as follows:
{ \small
\begin{verbatim}
$ cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/freebios co freebios2
$ svn co svn://coreboot.org/repos/trunk/coreboot-v2
\end{verbatim}
}
@ -148,76 +141,76 @@ Once the source tree is checked out, it can be updated with:
{ \small
\begin{verbatim}
% cvs update -Pd
% svn update
\end{verbatim}
}
Due to recent problems with SourceForge's CVS infrastructure we set up a
snapshot site that keeps hourly source trees of the last four days. It
is available at \url{http://snapshots.linuxbios.org/}.
Due to major structural enhancements to \hbox{LinuxBIOS}, AMD64 support
is only available in the \texttt{freebios2} tree. This tree reflects (as
of November 2003) LinuxBIOS version 1.1.5 and will lead to LinuxBIOS 2.0
For the case your corporate firewall blocks port 3690 (subversion) we set up a
snapshot site that keeps the last few hundred source code revisions. It
is available at \url{http://qa.coreboot.org/}.
Due to major structural enhancements to \hbox{coreboot}, AMD64 support
is only available in the \texttt{coreboot-v2} tree. This tree reflects (as
of November 2003) coreboot version 1.1.5 and will lead to coreboot 2.0
when finished. Most x86 hardware is currently only supported by the
LinuxBIOS 1.0 tree.
coreboot 1.0 tree.
%
% 6 LinuxBIOS configuration overview
% 6 coreboot configuration overview
%
\section{LinuxBIOS configuration overview}
To support a large variety of existing hardware LinuxBIOS allows for a
\section{coreboot configuration overview}
To support a large variety of existing hardware coreboot allows for a
lot of configuration options that can be tweaked in several ways:
\begin{itemize}
\item
Firmware image specific configuration options can be set in the image
configuration file which is usually found in
\texttt{freebios2/targets/$<$vendor$>$/$<$mainboard$>$/}. Such
\texttt{coreboot-v2/targets/$<$vendor$>$/$<$mainboard$>$/}. Such
options are the default amount of output verbosity during bootup, image
size, use of fallback mechanisms, firmware image size and payloads
(Linux Kernel, Bootloader...) The default configuration file name is
\texttt{Config.lb}, but LinuxBIOS allows multiple configurations to
\texttt{Config.lb}, but coreboot allows multiple configurations to
reside in that directory.
\item Mainboard specific configuration options can be set in the
mainboard configuration file placed in
\texttt{freebios2/src/mainboard/$<$vendor$>$/$<$mainboard$>$}. The
\texttt{coreboot-v2/src/mainboard/$<$vendor$>$/$<$mainboard$>$}. The
mainboard configuration file is always called \texttt{Config.lb}. It
contains information on the onboard components of the mainboard like
CPU type, northbridge, southbridge, hypertransport configuration and
SuperIO configuration. This configuration file also allows to include
addon code to hook into the LinuxBIOS initialization mechanism at
addon code to hook into the coreboot initialization mechanism at
basically any point.
\end{itemize}
This document describes different approaches of changing and configuring the
LinuxBIOS source tree when building for AMD64.
coreboot source tree when building for AMD64.
%
% 7 Building LinuxBIOS
% 7 Building coreboot
%
\section{Building LinuxBIOS}
One of the design goals for building LinuxBIOS was to keep object files
\section{Building coreboot}
One of the design goals for building coreboot was to keep object files
out of the source tree in a separate place. This is mandatory for
building parallel LinuxBIOS images for several distinct mainboards
and/or platforms. Therefore building LinuxBIOS consists of two steps:
building parallel coreboot images for several distinct mainboards
and/or platforms. Therefore building coreboot consists of two steps:
\begin{itemize}
\item
creating a build tree which holds all files automatically created by the
configuration utility and the object files
\item
compiling the LinuxBIOS code and creating a flashable firmware image.
compiling the coreboot code and creating a flashable firmware image.
\end{itemize}
The first of these two steps is accomplished by the \texttt{buildtarget}
script found in \texttt{freebios2/targets/}. To build LinuxBIOS for
script found in \texttt{coreboot-v2/targets/}. To build coreboot for
instance for the AMD Solo Athlon64 mainboard enter:
\begin{verbatim}
% cd freebios2/targets
% cd coreboot-v2/targets
% ./buildtarget amd/solo
\end{verbatim}
@ -225,23 +218,23 @@ This will create a directory containing a Makefile and other software
components needed for this build. The directory name is defined in the
firmware image specific configuration file. In the case of AMD's Solo
mainboard the default directory resides in
\texttt{freebios2/targets/amd/solo/solo}. To build the LinuxBIOS image, do
\texttt{coreboot-v2/targets/amd/solo/solo}. To build the coreboot image, do
\begin{verbatim}
% cd amd/solo/solo
% make
\end{verbatim}
The LinuxBIOS image filename is specified in the firmware image specific
The coreboot image filename is specified in the firmware image specific
configuration file. The default filename for AMD's Solo mainboard is
\texttt{solo.rom}.
%
% 8 Programming LinuxBIOS to flash memory
% 8 Programming coreboot to flash memory
%
\section{Programming LinuxBIOS to flash memory}
The image resulting from a LinuxBIOS build can be directly programmed to
\section{Programming coreboot to flash memory}
The image resulting from a coreboot build can be directly programmed to
a flash device, either using a hardware flash programmer or by using the
Linux flash driver devbios or mtd. This document assumes that you use a
hardware flash programmer. If you are interested in doing in-system
@ -255,15 +248,15 @@ software flash programming, find detailed information:
\newpage
%
% 9 LinuxBIOS configuration
% 9 coreboot configuration
%
\section{LinuxBIOS configuration}
The following chapters will cope with configuring LinuxBIOS. All
\section{coreboot configuration}
The following chapters will cope with configuring coreboot. All
configuration files share some basic rules
\begin{itemize}
\item
The default configuration file name in LinuxBIOS is \texttt{Config.lb}.
The default configuration file name in coreboot is \texttt{Config.lb}.
\item
All variables used in a configuration file have to be declared in this
file with \texttt{uses VARNAME} before usage.
@ -271,8 +264,8 @@ file with \texttt{uses VARNAME} before usage.
Comments can be added on a new line by using the comment identifier
\texttt{\#} at the beginning of the line.
\item
LinuxBIOS distinguishes between statements and options. Statements cause
the LinuxBIOS configuration mechanism to act, whereas options set
coreboot distinguishes between statements and options. Statements cause
the coreboot configuration mechanism to act, whereas options set
variables that are used by the build scripts or source code.
\item
Default configuration values can be set in the mainboard configuration
@ -280,7 +273,7 @@ files (keyword default)
\item
Option overrides to the default configuration can only be specified in
the build target configuration file
\texttt{freebios2/targets/$<$vendor$>$/$<$mainboard$>$/Config.lb}
\texttt{coreboot-v2/targets/$<$vendor$>$/$<$mainboard$>$/Config.lb}
(keyword option)
\end{itemize}
@ -297,8 +290,8 @@ used. Example:
\end{verbatim}
\textbf{NOTE:} Only configuration variables known to the configuration
system can be used in configuration files. LinuxBIOS checks
\texttt{freebios2/src/config/Options.lb} to see whether a configuration
system can be used in configuration files. coreboot checks
\texttt{coreboot-v2/src/config/Options.lb} to see whether a configuration
variable is known.
\item \begin{verbatim}default\end{verbatim}
@ -338,7 +331,7 @@ quotation marks:
The \texttt{option} statement basically behaves identically to the
\texttt{default} statement. But unlike default it can only be used in
build target configuration files
(\texttt{freebios2/targets/$<$vendor$>$/$<$mainboard$>$}). The option
(\texttt{coreboot-v2/targets/$<$vendor$>$/$<$mainboard$>$}). The option
statement allows either to set new options or to override default values
set with the default statement in a mainboard configuration file.
Syntax and application are the same as with default.
@ -346,12 +339,12 @@ Syntax and application are the same as with default.
\end{itemize}
\subsection{Firmware image specific configuration}
LinuxBIOS allows to create different firmware images for the same
coreboot allows to create different firmware images for the same
hardware. Such images can differ in the amount of output they produce,
the payload, the number of subimages they consist of etc.
The firmware image specific configuration file can be found in \\
\texttt{freebios2/targets/$<$vendor$>$/<mainboard$>$}.
\texttt{coreboot-v2/targets/$<$vendor$>$/<mainboard$>$}.
\subsubsection{Firmware image specific keywords}
In addition to the above described keywords the following statements are
@ -361,13 +354,13 @@ available in firmware image specific configuration files:
\item \begin{verbatim}romimage\end{verbatim}
The \texttt{romimage} definition describes a single rom build within the
final LinuxBIOS image. Normally there are two romimage definitions per
LinuxBIOS build: \texttt{normal} and \texttt{fallback}.
final coreboot image. Normally there are two romimage definitions per
coreboot build: \texttt{normal} and \texttt{fallback}.
Each \texttt{romimage} section needs to specify a mainboard directory and a
payload. The mainboard directory contains the mainboard specific
configuration file and source code. It is specified relatively to
\texttt{freebios2/src/mainboard}. The payload definition is an absolute
\texttt{coreboot-v2/src/mainboard}. The payload definition is an absolute
path to a static elf binary (i.e Linux kernel or etherboot)
\begin{verbatim}
@ -384,8 +377,8 @@ end
\item \begin{verbatim}buildrom\end{verbatim}
The \texttt{buildrom} statement is used to determine which of the
LinuxBIOS image builds (created using \texttt{romimage}) are packed
together to the final LinuxBIOS image. It also specifies the order of
coreboot image builds (created using \texttt{romimage}) are packed
together to the final coreboot image. It also specifies the order of
the images and the final image size:
\begin{verbatim}
@ -407,7 +400,7 @@ option on how to set them.
\item \begin{verbatim}CC\end{verbatim}
Target C Compiler. Default is \texttt{\$(CROSS\_COMPILE)gcc}. Set to
\texttt{gcc -m32} for compiling AMD64 LinuxBIOS images on an AMD64
\texttt{gcc -m32} for compiling AMD64 coreboot images on an AMD64
machine.
\item \begin{verbatim}CONFIG_CHIP_CONFIGURE \end{verbatim}
@ -444,7 +437,7 @@ This does not include the fallback payload.
Export CMOS option table. Default is \texttt{0}. Set to \texttt{1} if
your mainboard has CMOS memory and you want to use it to store
LinuxBIOS parameters (Loglevel, serial line speed, ...)
coreboot parameters (Loglevel, serial line speed, ...)
\item \begin{verbatim}CONFIG_ROM_PAYLOAD\end{verbatim}
@ -473,8 +466,8 @@ Default image size. Defaults to \texttt{65535} bytes.
\item \begin{verbatim}COREBOOT_EXTRA_VERSION\end{verbatim}
LinuxBIOS extra version. This option has an empty string as default. Set
to any string to add an extra version string to your LinuxBIOS build.
coreboot extra version. This option has an empty string as default. Set
to any string to add an extra version string to your coreboot build.
\end{itemize}
@ -521,7 +514,7 @@ one-node system, write:
\item \begin{verbatim}driver\end{verbatim}
The \texttt{driver} keyword adds an object file to the driver section of a
LinuxBIOS image. This means it can be used by the PCI device
coreboot image. This means it can be used by the PCI device
initialization code. Example:
\begin{verbatim}
@ -530,7 +523,7 @@ initialization code. Example:
\item \begin{verbatim}object\end{verbatim}
The \texttt{object} keyword adds an object file to the LinuxBIOS image.
The \texttt{object} keyword adds an object file to the coreboot image.
Per default the object file will be compiled from a \texttt{.c} file
with the same name. Symbols defined in such an object file can be used
in other object files and drivers. Example:
@ -543,7 +536,7 @@ in other object files and drivers. Example:
This keyword can be used to extend the existing file creation rules
during the build process. This is useful if external utilities have to
be used for the build. LinuxBIOS on AMD64 uses romcc for it's early
be used for the build. coreboot on AMD64 uses romcc for it's early
startup code placed in auto.c.
To tell the configuration mechanism how to build \texttt{romcc} files,
@ -569,7 +562,7 @@ are satisfied (using the \texttt{action} keyword).
\item \begin{verbatim}mainboardinit\end{verbatim}
With the mainboardinit keyword it's possible to include assembler code
directly into the LinuxBIOS image. This is used for early infrastructure
directly into the coreboot image. This is used for early infrastructure
initialization, i.e. to switch to protected mode. Example:
\begin{verbatim}
@ -578,12 +571,12 @@ initialization, i.e. to switch to protected mode. Example:
\item \begin{verbatim}ldscript\end{verbatim}
The GNU linker ld is used to link object files together to a LinuxBIOS
The GNU linker ld is used to link object files together to a coreboot
ROM image.
Since it is a lot more comfortable and flexible to use the GNU linker
with linker scripts (ldscripts) than to create complex command line
calls, LinuxBIOS features including linker scripts to control image
calls, coreboot features including linker scripts to control image
creation. Example:
\begin{verbatim}
@ -593,12 +586,12 @@ creation. Example:
\item \begin{verbatim}dir\end{verbatim}
LinuxBIOS reuses as much code between the different ports as possible.
coreboot reuses as much code between the different ports as possible.
To achieve this, commonly used code can be stored in a separate
directory. For a new mainboard, it is enough to know that the code in
that directory can be used as is.
LinuxBIOS will also read a \texttt{Config.lb} file stored in that
coreboot will also read a \texttt{Config.lb} file stored in that
directory. This happens with:
\begin{verbatim}
@ -630,7 +623,7 @@ Example:
The \texttt{northbridge} keyword describes a system northbridge. Some
systems, like AMD64, can have more than one northbridge, i.e. one per
CPU node. Each northbridge is described by the path to the northbridge
code in LinuxBIOS (relative to \texttt{freebios2/src/northbridge}), i.e.
code in coreboot (relative to \texttt{coreboot-v2/src/northbridge}), i.e.
\texttt{amd/amdk8} and a unique name (i.e \texttt{mc0}) \\
Example:
@ -642,7 +635,7 @@ Example:
\item \begin{verbatim}southbridge\end{verbatim}
To simplify the handling of bus bridges in a LinuxBIOS system, all
To simplify the handling of bus bridges in a coreboot system, all
bridges available in a system that are not northbridges (i.e AGP, IO,
PCIX) are seen as southbridges.
@ -672,7 +665,7 @@ The \texttt{pci} keyword can only occur within a \texttt{northbridge} or
that are provided by the bridge. Generally all bridge sections have a
couple of \texttt{pci} keywords.
The first occurrence of the \texttt{pci} keyword tells LinuxBIOS where
The first occurrence of the \texttt{pci} keyword tells coreboot where
the bridge devices start, relative to the PCI configuration space used
by the bridge. The following occurences of the \texttt{pci} keyword
describe the provided devices.
@ -716,7 +709,7 @@ end
\item \begin{verbatim}superio\end{verbatim}
SuperIO devices are basically handled like brigdes. They are taking
their driver code from \texttt{freebios2/src/superio/}. They don't
their driver code from \texttt{coreboot-v2/src/superio/}. They don't
provide a PCI compatible configuration interface, but instead are ISA
PnP devices. Normally they are connected to a southbridge. If this is
the case, the \texttt{superio} section will be a subsection of the
@ -796,23 +789,23 @@ mandatory if you want to boot a 64bit Linux kernel on an AMD64 system.
\item \begin{verbatim}STACK_SIZE\end{verbatim}
LinuxBIOS stack size. The size of the function call stack defaults to
coreboot stack size. The size of the function call stack defaults to
\texttt{0x2000} (8k).
\item \begin{verbatim}HEAP_SIZE\end{verbatim}
LinuxBIOS heap size. The heap is used when LinuxBIOS allocates memory
coreboot heap size. The heap is used when coreboot allocates memory
with malloc(). The default heap size is \texttt{0x2000}, but AMD64 boards
generally set it to \texttt{0x4000} (16k)
\item \begin{verbatim}XIP_ROM_BASE\end{verbatim}
Start address of area to cache during LinuxBIOS execution directly from
Start address of area to cache during coreboot execution directly from
ROM.
\item \begin{verbatim}XIP_ROM_SIZE\end{verbatim}
Size of area to cache during LinuxBIOS execution directly from ROM
Size of area to cache during coreboot execution directly from ROM
\item \begin{verbatim}CONFIG_COMPRESS\end{verbatim}
@ -831,19 +824,19 @@ decompression is needed).
\section{Tweaking the source code}
Besides configuring the existing code it is sometimes necessary or
desirable to tweak certain parts of LinuxBIOS by direct changes to the
desirable to tweak certain parts of coreboot by direct changes to the
code. This chapter covers some possible enhancements and changes that
are needed when porting LinuxBIOS to a new mainboard or just come
are needed when porting coreboot to a new mainboard or just come
handy now and then.
\subsection{Hypertransport configuration}
Before LinuxBIOS is able to activate all CPUs and detect bridges
Before coreboot is able to activate all CPUs and detect bridges
attached to these CPUs (and thus, see all devices attached to the
system) it has to initialize the coherent hypertransport devices.
The current algorithms to do coherent hypertransport initialization are
not fully, automatically evaluating the hypertransport chain graph.
Therefore the code needs to be adapted when porting LinuxBIOS to a new
Therefore the code needs to be adapted when porting coreboot to a new
AMD64 mainboard. An example arrangement of hypertransport devices
looks like this:
@ -867,7 +860,7 @@ two steps.
\item Setting outgoing connections
The algorithm needs to know which outgoing port of a CPU node is
connected to the directly succeeding node. This is done in
\texttt{freebios2/src/mainboard/$<$vendor$>$/$<$mainboard$>$/auto.c}
\texttt{coreboot-v2/src/mainboard/$<$vendor$>$/$<$mainboard$>$/auto.c}
with a number of preprocessor defines (one define for two-node systems,
three defines for four-node systems).
@ -895,7 +888,7 @@ These three message types are routed using different hypertransport
ports. The routing information is written to the AMD K8 routing table.
In an Nnode system this routing table consists of 3*N*N entries , one
for each message type and for each possible CPU --> CPU communication. For
simplicity LinuxBIOS keeps the 3 routing entries for each CPU --> CPU
simplicity coreboot keeps the 3 routing entries for each CPU --> CPU
communication in one machine word. The routing table of each node looks
like this:
@ -996,7 +989,7 @@ static unsigned int generate_row
\subsection{DRAM configuration}
Setting up the RAM controller(s) is probably the most complex part of
LinuxBIOS. Basically LinuxBIOS serially initializes all RAM controllers
coreboot. Basically coreboot serially initializes all RAM controllers
in the system, using SPDROM (serial presence detect) data to set
timings, size and other properties. The SPD data is usually read
utilizing the I2C SMBUS interface of the southbridge.
@ -1015,7 +1008,7 @@ struct mem_controller {
Available mainboard implementations and CPUs create the need to add
special setup code to RAM initialization in a number of places.
LinuxBIOS provides hooks to easily add code in these places without
coreboot provides hooks to easily add code in these places without
having to change the generic code. Whether these hooks have to be used
depends on the mainboard design. In many cases the functions executed
by the hooks just carry out trivial default settings or they are even
@ -1024,7 +1017,7 @@ empty.
Some mainboard/CPU combinations need to trigger an additional memory
controller reset before the memory can be initialized properly. This is,
for example, used to get memory working on preC stepping AMD64
processors. LinuxBIOS provides two hooks for triggering onboard memory
processors. coreboot provides two hooks for triggering onboard memory
reset logic:
\begin{itemize}
@ -1046,10 +1039,10 @@ static inline void activate_spd_rom (const struct mem_controller *ctrl)
The way SMBUS hub information is coded into the \texttt{mem\_controller}
structure is mainboard implementation specific and not
described here. See \texttt{freebios2/src/mainboard/amd/quartet/auto.c}
described here. See \texttt{coreboot-v2/src/mainboard/amd/quartet/auto.c}
for an example.
LinuxBIOS folks have agreed on SPD data being the central information
coreboot folks have agreed on SPD data being the central information
source for RAM specific information. But not all mainboards/RAM
modules feature a physical SPD ROM. To still allow an easy to use SPD
driven setup, there is a hook that abstracts reading the SPD ROM
@ -1086,9 +1079,9 @@ default HAVE_PIRQ_TABLE=1
default IRQ_SLOT_COUNT=7
\end{verbatim}
This will make LinuxBIOS look for the file \\
\texttt{freebios2/src/mainboard/<vendor>/<mainboard>/irq\_tables.c} which
contains the source code definition of the IRQ table. LinuxBIOS corrects
This will make coreboot look for the file \\
\texttt{coreboot-v2/src/mainboard/<vendor>/<mainboard>/irq\_tables.c} which
contains the source code definition of the IRQ table. coreboot corrects
small inconsistencies in the IRQ table during startup (checksum and
number of entries), but it is not yet writing IRQ tables in a completely
dynamic way.
@ -1104,11 +1097,11 @@ controller instead (vendor id=\texttt{0x1022}, device id=\texttt{0x7443})
\subsection {MP Tables}
LinuxBIOS contains code to create MP tables conforming the
Multiprocessor Specification V1.4. To include an MP Table in a LinuxBIOS
coreboot contains code to create MP tables conforming the
Multiprocessor Specification V1.4. To include an MP Table in a coreboot
image, the following configuration variables have to be set (in the
mainboard specific configuration file
\texttt{freebios2/src/mainboard/<vendor><mainboard>/Config.lb}):
\texttt{coreboot-v2/src/mainboard/<vendor><mainboard>/Config.lb}):
\begin{verbatim}
default CONFIG_SMP=1
@ -1116,8 +1109,8 @@ default CONFIG_MAX_CPUS=1 # 2,4,..
default HAVE_MP_TABLE=1
\end{verbatim}
LinuxBIOS will then look for a function for setting up the MP table in
the file \texttt{freebios2/src/mainboard<vendor>/<mainboard>/mptable.c}:
coreboot will then look for a function for setting up the MP table in
the file \texttt{coreboot-v2/src/mainboard<vendor>/<mainboard>/mptable.c}:
\begin{verbatim}
void *smp_write_config_table(void *v, unsigned long * processor_map)
@ -1130,7 +1123,7 @@ revisions.
\subsection {ACPI Tables}
There is initial ACPI support in LinuxBIOS now. Currently the only gain with
There is initial ACPI support in coreboot now. Currently the only gain with
this is the ability to use HPET timers in Linux. To achieve this, there is a
framework that can generate the following tables:
\begin{itemize}
@ -1140,7 +1133,7 @@ framework that can generate the following tables:
\item HPET
\end{itemize}
To enable ACPI in your LinuxBIOS build, add the following lines to your
To enable ACPI in your coreboot build, add the following lines to your
configuration files:
\begin{verbatim}
uses HAVE_ACPI_TABLES
@ -1155,16 +1148,16 @@ It's likely that more ACPI support will follow, when there is need for certain
features.
\subsection{POST}
LinuxBIOS has three different methods of handling POST codes. They can
coreboot has three different methods of handling POST codes. They can
be triggered using configuration file options.
\begin{itemize}
\item
\emph{Ignore POST completely}. No early code debugging is possible with
this setting. Set the configuration variable \texttt{NO\_POST} to
\texttt{1} to switch off all POST handling in LinuxBIOS.
\texttt{1} to switch off all POST handling in coreboot.
\item
\emph{Normal IO port 80 POST}. This is the default behavior of
LinuxBIOS. No configuration variables have to be set. To be able to see
coreboot. No configuration variables have to be set. To be able to see
port 80 POST output, you need a POST expansion card for ISA or PCI. Port
80 POST allows simple debugging without any other output method
available (serial interface or VGA display)
@ -1178,7 +1171,7 @@ configuration variable \texttt{CONFIG\_SERIAL\_POST} to the value 1.
\subsection{HDT Debugging}
If you are debugging your LinuxBIOS code with a Hardware Debug Tool
If you are debugging your coreboot code with a Hardware Debug Tool
(HDT), you can find the source code line for a given physical EIP
address as follows: Look the address up in the file linuxbios.map. Then
search the label Lxx in the file auto.inc created by romcc. The original
@ -1186,7 +1179,7 @@ source code file and line number is mentioned in auto.inc.
\subsection{Device Drivers}
With only a few data structures LinuxBIOS features a simple but flexible
With only a few data structures coreboot features a simple but flexible
device driver interface. This interface is not intended for autonomously
driving the devices but to initialize all system components so that they
can be used by the booted operating system.
@ -1220,9 +1213,9 @@ initialize and operate the device:
By separating the two structures above, M:N relations between compatible
devices and drivers can be described. The driver source code containing
above data structures and code have to be added to a LinuxBIOS image
above data structures and code have to be added to a coreboot image
using the driver keyword in the mainboard specific configuration file \\
\texttt{freebios2/src/mainboard/<vendor>/<mainboard>/Config.lb}:
\texttt{coreboot-v2/src/mainboard/<vendor>/<mainboard>/Config.lb}:
\begin{verbatim}
driver lsi_scsi.o
@ -1230,20 +1223,20 @@ using the driver keyword in the mainboard specific configuration file \\
\subsection{Bus Bridges}
Currently all bridges supported in the LinuxBIOS2 tree are transparent
Currently all bridges supported in the coreboot-v2 tree are transparent
bridges. This means, once the bridge is initialized, it's remote devices
are visible on one of the PCI buses without special probing. LinuxBIOS
are visible on one of the PCI buses without special probing. coreboot
supports also bridges that are nontransparent. The driver support code
can provide a \texttt{scan\_bus} function to scan devices behind the bridge.
\subsection{CPU Reset}
When changing speed and width of hypertransport chain connections
LinuxBIOS has to either assert an LDTSTOP or a reset to make the changes
become active. Additionally Linux can do a firmware reset, if LinuxBIOS
coreboot has to either assert an LDTSTOP or a reset to make the changes
become active. Additionally Linux can do a firmware reset, if coreboot
provides the needed infrastructure. To use this capability, define the
option \texttt{HAVE\_HARD\_RESET} and add an object file specifying the
reset code in your mainboard specific configuration file
\texttt{freebios2/src/mainboard/$<$vendor$>$/$<$mainboard$>$/Config.lb}:
\texttt{coreboot-v2/src/mainboard/$<$vendor$>$/$<$mainboard$>$/Config.lb}:
\begin{verbatim}
default HAVE_HARD_RESET=1
@ -1258,41 +1251,41 @@ of the system reset:
void hard_reset(void);
\end{verbatim}
See \texttt{freebios2/src/mainboard/arima/hdama/reset.c} for an example
See \texttt{coreboot-v2/src/mainboard/arima/hdama/reset.c} for an example
implementation.
\newpage
%
% 11. LinuxBIOS Internals
% 11. coreboot Internals
%
\section{LinuxBIOS Internals}
\section{coreboot Internals}
This chapter covers some of the internal structures and algorithms of
LinuxBIOS that have not been mentioned so far.
coreboot that have not been mentioned so far.
\subsection{Code Flow}
\begin{figure}[htb]
\centering
\includegraphics[scale=0.7]{codeflow.pdf}
\caption{LinuxBIOS rough Code Flow}
\caption{coreboot rough Code Flow}
\label{fix:codeflow}
\end{figure}
\newpage
\subsection{Fallback mechanism}
LinuxBIOS provides a mechanism to pack two different LinuxBIOS builds
within one LinuxBIOS ROM image. Using the system CMOS memory LinuxBIOS
coreboot provides a mechanism to pack two different coreboot builds
within one coreboot ROM image. Using the system CMOS memory coreboot
determines whether the last boot with a default image succeeded and
boots a failsafe image on failure. This allows insystem testing without
the risk to render the system unusable. See
\texttt{freebios2/src/mainboard/arima/hdama/failover.c} for example
\texttt{coreboot-v2/src/mainboard/arima/hdama/failover.c} for example
code. The fallback mechanism can be used with the \texttt{cmos\_util}.
\subsection{(Un) Supported Standards}
LinuxBIOS supports the following standards
coreboot supports the following standards
\begin{itemize}
\item Multiprocessing Specification (MPSPEC) 1.4
\item IRQ Tables (PIRQ)
@ -1305,18 +1298,18 @@ probably not be supported in future revisions:
\item APM
\end{itemize}
\subsection{LinuxBIOS table}
LinuxBIOS stores information about the system in a data structure called
the LinuxBIOS table. This table can be read under Linux using the tool
lxbios from the Lawrence Livermore National Laboratory.
\subsection{coreboot table}
coreboot stores information about the system in a data structure called
the coreboot table. This table can be read under Linux using the tool
nvramtool from the Lawrence Livermore National Laboratory.
Get more information about lxbios and the utility itself at
\url{http://www.llnl.gov/linux/lxbios/lxbios.html}
\subsection{ROMCC limitations}
ROMCC, part of the LinuxBIOS project, is a C compiler that translates to
ROMCC, part of the coreboot project, is a C compiler that translates to
completely rommable code. This means the resulting code does not need
any memory to work. This is one of the major improvements in LinuxBIOS
any memory to work. This is one of the major improvements in coreboot
V2, since it allows almost all code to be written in C. DRAM
initialization can be factored and reused more easily among mainboards
and platforms.
@ -1331,12 +1324,12 @@ time. If you run out of registers during compilation, try to refactor
your code.
\subsection{CMOS handling}
LinuxBIOS can use the mainboard's CMOS memory to store information
coreboot can use the mainboard's CMOS memory to store information
defined in a data structure called the CMOS table . This information
contains serial line speed, fallback boot control, output verbosity,
default boot device, ECC control, and more. It can be easily enhanced by
enhancing the CMOS table. This table, if present, is found at
\texttt{freebios2/src/mainboard/$<$vendor$>$/$<$mainboard$>$/cmos.layout}.
\texttt{coreboot-v2/src/mainboard/$<$vendor$>$/$<$mainboard$>$/cmos.layout}.
It describes the available options, their possible values and their
position within the CMOS memory. The layout file looks as follows:
\begin{verbatim}
@ -1358,16 +1351,16 @@ position within the CMOS memory. The layout file looks as follows:
\end{verbatim}
To change CMOS values from a running Linux system, use the
\texttt{cmos\_util}, provided by Linux Networks as part of the LinuxBIOS
\texttt{cmos\_util}, provided by Linux Networks as part of the coreboot
utilities suite. Get it at
\textit{ftp://ftp.lnxi.com/pub/linuxbios/utilities/}
\subsection {Booting Payloads}
LinuxBIOS can load a payload binary from a Flash device or IDE. This
coreboot can load a payload binary from a Flash device or IDE. This
payload can be a boot loader, like FILO or Etherboot, a kernel image, or
any other static ELF binary.
To create a Linux kernel image, that is bootable in LinuxBIOS, you have
To create a Linux kernel image, that is bootable in coreboot, you have
to use mkelfImage. The command line I used, looks like follows:
\begin{verbatim}
@ -1436,9 +1429,9 @@ controller firmware and similar. Without this initialization, an
operating system can not take advantage of the hardware, so there needs
to be a way to address this issue. There are several alternatives:
\subsection{Native LinuxBIOS Support}
\subsection{Native coreboot Support}
For some devices (ie Trident Cyberblade 3d) there is native LinuxBIOS
For some devices (ie Trident Cyberblade 3d) there is native coreboot
support This means there is a small driver bound to the PCI id of the
device that is called after PCI device ressources are allotted.
@ -1458,7 +1451,7 @@ CONs:
\subsection{Using Native Linux Support}
A simple way of getting a whole lot of drivers available for LinuxBIOS
A simple way of getting a whole lot of drivers available for coreboot
is to reuse Linux drivers by putting a Linux kernel to flash. This
works, because no drivers are needed to get the Linux kernel (as opposed
to store the kernel on a harddisk connected to isa/scsi/raid storage)
@ -1510,7 +1503,7 @@ bytecode that runs with minimal footprint on all architectures that have
an Open Firmware implementation.
There is a free Open Firmware implementation available, called OpenBIOS,
that runs on top of LinuxBIOS. See www.openbios.org
that runs on top of coreboot. See www.openbios.org
PROs:
\begin{itemize}
@ -1529,7 +1522,7 @@ CONs:
%
\section{Image types}
There used to be one image type for LinuxBIOS, as described above. Since this paper was written (2004) there have been many changes. First, the name
There used to be one image type for coreboot, as described above. Since this paper was written (2004) there have been many changes. First, the name
was changed to coreboot, for many reasons. Second, Ying-Hai Liu, then of AMD, now of Sun, added Cache As Ram support (CAR) for many AMD CPUs, which both simplified and complicated things. Simplification came with the removal of romcc; complication came with the addition of new ways to build.
There are two big additions to the build process and, furthermore, more than two new CONFIG variables to control them.
@ -1702,7 +1695,7 @@ No significant change from romcc code, except that the CAR code has to set up a
\begin{itemize}
\item payload
LinuxBIOS only cares about low level machine initialization, but also has
coreboot only cares about low level machine initialization, but also has
very simple mechanisms to boot a file either from FLASHROM or IDE. That
file, possibly a Linux Kernel, a boot loader or Etherboot, are called
payload, since it is the first software executed that does not cope with
@ -1721,14 +1714,11 @@ ROMs they can be electronically erased and reprogrammed.
%
\section{Bibliography}
\subsection{Additional Papers on LinuxBIOS}
\subsection{Additional Papers on coreboot}
\begin{itemize}
\item { \small
\textit{\url{http://www.linuxnetworx.com/products/linuxbios_white_paper.pdf}}
}
\item
\textit{\url{http://www.linuxbios.org/papers/}}
\textit{\url{http://www.coreboot.org/Documentation}}
\item
\textit{\url{http://www.lysator.liu.se/upplysning/fa/linuxbios.pdf}}
\item
@ -1739,7 +1729,7 @@ ROMs they can be electronically erased and reprogrammed.
\begin{itemize}
\item Etherboot: \textit{\url{http://www.etherboot.org/}}
\item Filo: \textit{\url{http://te.to/~ts1/filo/}}
\item Filo: \textit{\url{http://www.coreboot.org/FILO}}
\item OpenBIOS: \textit{\url{http://www.openbios.org/}}
\end{itemize}

View File

@ -10,11 +10,11 @@ FIGS=codeflow.pdf hypertransport.pdf
all: LinuxBIOS-AMD64.pdf
codeflow.pdf: codeflow.eps
epstopdf $< -o=$@
codeflow.pdf: codeflow.svg
svg2pdf $< $@
hypertransport.pdf: hypertransport.eps
epstopdf $< -o=$@
hypertransport.pdf: hypertransport.svg
svg2pdf $< $@
LinuxBIOS-AMD64.toc: $(FIGS) LinuxBIOS-AMD64.tex
# 2 times to make sure we have a current toc.

File diff suppressed because it is too large Load Diff

234
documentation/codeflow.svg Normal file
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@ -0,0 +1,234 @@
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6852 8945 t
236 -357 m 225 -357 l 223 -345 217 -339 208 -339 ct 203 -339 194 -341 185 -345 ct
165 -353 146 -357 129 -357 ct 106 -357 83 -348 65 -333 ct 47 -316 37 -294 37 -267 ct
37 -224 60 -195 120 -163 ct 158 -143 185 -122 198 -102 ct 203 -95 206 -84 206 -71 ct
206 -35 179 -11 141 -11 ct 94 -11 60 -40 34 -105 ct 22 -105 l 38 6 l 49 6 l
50 -3 56 -10 64 -10 ct 70 -10 79 -8 89 -4 ct 109 3 130 7 151 7 ct 212 7 259 -34 259 -88 ct
259 -132 230 -166 160 -204 ct 105 -234 83 -258 83 -286 ct 83 -315 105 -335 138 -335 ct
161 -335 184 -325 202 -306 ct 219 -289 226 -276 234 -244 ct 248 -244 l p ef
300 -350 m 300 -340 l 344 -337 350 -331 350 -292 ct 350 -57 l 350 -18 343 -11 300 -10 ct
300 0 l 476 0 l 517 0 555 -11 575 -29 ct 594 -46 604 -69 604 -95 ct 604 -118 595 -139 578 -155 ct
562 -169 548 -175 514 -184 ct 541 -190 552 -196 565 -207 ct 578 -219 586 -238 586 -260 ct
586 -319 539 -350 448 -350 ct p
404 -172 m 456 -172 480 -169 499 -161 ct 529 -149 543 -128 543 -94 ct 543 -66 532 -45 511 -33 ct
494 -23 472 -19 438 -19 ct 412 -19 404 -24 404 -41 ct p
404 -193 m 404 -314 l 404 -325 408 -330 416 -330 ct 439 -330 l 500 -330 532 -305 532 -258 ct
532 -216 504 -193 454 -193 ct p ef
pom
pum
6455 9607 t
156 -357 m 116 -332 101 -318 81 -294 ct 43 -248 25 -195 25 -133 ct 25 -66 44 -14 91 39 ct
113 65 126 76 154 93 ct 160 85 l 118 51 103 33 89 -6 ct 76 -41 70 -82 70 -134 ct
70 -190 77 -233 92 -266 ct 106 -299 122 -318 160 -349 ct p ef
338 -196 m 390 -224 409 -246 409 -282 ct 409 -325 371 -357 318 -357 ct 260 -357 217 -322 217 -274 ct
217 -239 227 -224 283 -175 ct 226 -132 214 -115 214 -79 ct 214 -28 256 7 316 7 ct
379 7 420 -27 420 -82 ct 420 -122 l 402 -148 l p
328 -141 m 367 -114 380 -95 380 -65 ct 380 -31 356 -7 322 -7 ct 281 -7 254 -38 254 -84 ct
254 -117 266 -140 297 -165 ct p
323 -205 m 275 -236 256 -260 256 -290 ct 256 -321 280 -342 314 -342 ct 350 -342 372 -319 372 -283 ct
372 -252 357 -229 327 -208 ct 325 -207 l 325 -207 l p ef
603 -357 m 508 -309 l 508 -302 l 515 -304 520 -306 523 -307 ct 532 -311 541 -313 546 -313 ct
557 -313 562 -305 562 -288 ct 562 -49 l 562 -31 558 -19 549 -14 ct 542 -10 534 -8 512 -7 ct
512 0 l 658 0 l 658 -7 l 616 -8 608 -13 608 -39 ct 608 -356 l p ef
867 -357 m 772 -309 l 772 -302 l 779 -304 784 -306 787 -307 ct 796 -311 805 -313 810 -313 ct
821 -313 826 -305 826 -288 ct 826 -49 l 826 -31 822 -19 813 -14 ct 806 -10 798 -8 776 -7 ct
776 0 l 922 0 l 922 -7 l 880 -8 872 -13 872 -39 ct 872 -356 l p ef
1132 -357 m 1037 -309 l 1037 -302 l 1044 -304 1049 -306 1052 -307 ct 1061 -311 1070 -313 1075 -313 ct
1086 -313 1091 -305 1091 -288 ct 1091 -49 l 1091 -31 1087 -19 1078 -14 ct 1071 -10 1063 -8 1041 -7 ct
1041 0 l 1187 0 l 1187 -7 l 1145 -8 1137 -13 1137 -39 ct 1137 -356 l p ef
1264 93 m 1303 68 1319 54 1338 30 ct 1376 -15 1394 -68 1394 -130 ct 1394 -198 1375 -249 1328 -303 ct
1306 -329 1293 -340 1265 -357 ct 1259 -349 l 1301 -315 1315 -297 1330 -257 ct
1343 -222 1349 -181 1349 -129 ct 1349 -74 1342 -30 1328 2 ct 1313 35 1297 54 1259 85 ct
p ef
pom
gr
0.753 0.753 0.753 c 3288 10118 m 2275 10118 l 2275 8090 l 4301 8090 l
4301 10118 l 3288 10118 l p ef
0.003 0.003 0.003 c 3288 10118 m 2275 10118 l 2275 8090 l 4301 8090 l 4301 10118 l
3288 10118 l pc
gs
pum
2593 8945 t
106 -153 m 120 -152 129 -152 143 -152 ct 184 -152 213 -157 235 -170 ct 267 -187 286 -219 286 -254 ct
286 -276 279 -296 265 -312 ct 243 -335 197 -350 148 -350 ct 8 -350 l 8 -340 l
47 -335 52 -330 52 -292 ct 52 -63 l 52 -19 48 -13 8 -10 ct 8 0 l 156 0 l 156 -10 l
114 -11 106 -19 106 -57 ct p
106 -312 m 106 -326 110 -330 124 -330 ct 196 -330 229 -305 229 -251 ct 229 -199 197 -173 137 -173 ct
126 -173 119 -174 106 -175 ct p ef
618 -238 m 614 -357 l 603 -357 l 599 -346 591 -340 580 -340 ct 576 -340 568 -341 560 -344 ct
534 -353 507 -357 483 -357 ct 439 -357 395 -341 362 -312 ct 325 -279 305 -230 305 -171 ct
305 -122 321 -77 348 -47 ct 380 -12 429 7 481 7 ct 541 7 593 -16 625 -59 ct 616 -69 l
577 -31 542 -15 498 -15 ct 465 -15 435 -26 412 -46 ct 383 -72 367 -120 367 -178 ct
367 -274 416 -336 493 -336 ct 523 -336 550 -325 571 -304 ct 588 -287 596 -272 606 -238 ct
p ef
695 -57 m 695 -17 688 -11 644 -10 ct 644 0 l 801 0 l 801 -10 l 758 -11 749 -19 749 -57 ct
749 -292 l 749 -331 757 -338 801 -340 ct 801 -350 l 644 -350 l 644 -340 l
689 -337 695 -331 695 -292 ct p ef
840 -135 m 840 -102 l 970 -102 l 970 -135 l p ef
1373 -350 m 1247 -350 l 1247 -340 l 1275 -339 1284 -335 1284 -323 ct 1284 -315 1278 -305 1263 -286 ct
1203 -213 l 1181 -244 l 1148 -289 1136 -312 1136 -324 ct 1136 -334 1144 -339 1161 -339 ct
1176 -340 l 1176 -350 l 1016 -350 l 1016 -340 l 1051 -338 1060 -330 1112 -257 ct
1170 -172 l 1087 -70 l 1039 -14 1037 -12 1010 -10 ct 1010 0 l 1133 0 l
1133 -10 l 1102 -12 1093 -16 1093 -28 ct 1093 -36 1101 -49 1120 -74 ct 1183 -152 l
1234 -78 l 1251 -52 1261 -34 1261 -26 ct 1261 -16 1252 -11 1234 -11 ct 1232 -11 1226 -10 1220 -10 ct
1220 0 l 1377 0 l 1377 -10 l 1349 -13 1341 -18 1318 -49 ct 1217 -194 l
1294 -290 l 1328 -331 1339 -338 1373 -340 ct p ef
pom
pum
2566 9607 t
156 -357 m 116 -332 101 -318 81 -294 ct 43 -248 25 -195 25 -133 ct 25 -66 44 -14 91 39 ct
113 65 126 76 154 93 ct 160 85 l 118 51 103 33 89 -6 ct 76 -41 70 -82 70 -134 ct
70 -190 77 -233 92 -266 ct 106 -299 122 -318 160 -349 ct p ef
338 -196 m 390 -224 409 -246 409 -282 ct 409 -325 371 -357 318 -357 ct 260 -357 217 -322 217 -274 ct
217 -239 227 -224 283 -175 ct 226 -132 214 -115 214 -79 ct 214 -28 256 7 316 7 ct
379 7 420 -27 420 -82 ct 420 -122 l 402 -148 l p
328 -141 m 367 -114 380 -95 380 -65 ct 380 -31 356 -7 322 -7 ct 281 -7 254 -38 254 -84 ct
254 -117 266 -140 297 -165 ct p
323 -205 m 275 -236 256 -260 256 -290 ct 256 -321 280 -342 314 -342 ct 350 -342 372 -319 372 -283 ct
372 -252 357 -229 327 -208 ct 325 -207 l 325 -207 l p ef
603 -357 m 508 -309 l 508 -302 l 515 -304 520 -306 523 -307 ct 532 -311 541 -313 546 -313 ct
557 -313 562 -305 562 -288 ct 562 -49 l 562 -31 558 -19 549 -14 ct 542 -10 534 -8 512 -7 ct
512 0 l 658 0 l 658 -7 l 616 -8 608 -13 608 -39 ct 608 -356 l p ef
794 -174 m 826 -174 838 -173 851 -168 ct 883 -157 904 -126 904 -90 ct 904 -46 874 -11 835 -11 ct
820 -11 810 -15 790 -28 ct 774 -37 765 -41 756 -41 ct 744 -41 736 -33 736 -22 ct
736 -4 759 7 796 7 ct 837 7 879 -6 903 -28 ct 928 -49 942 -80 942 -115 ct 942 -142 934 -167 918 -184 ct
908 -195 898 -202 874 -212 ct 911 -236 924 -256 924 -285 ct 924 -327 890 -357 842 -357 ct
815 -357 792 -348 773 -331 ct 757 -317 749 -303 737 -271 ct 745 -269 l 767 -308 791 -325 824 -325 ct
858 -325 882 -302 882 -269 ct 882 -250 874 -231 861 -217 ct 845 -202 830 -194 794 -181 ct
p ef
1132 -357 m 1037 -309 l 1037 -302 l 1044 -304 1049 -306 1052 -307 ct 1061 -311 1070 -313 1075 -313 ct
1086 -313 1091 -305 1091 -288 ct 1091 -49 l 1091 -31 1087 -19 1078 -14 ct 1071 -10 1063 -8 1041 -7 ct
1041 0 l 1187 0 l 1187 -7 l 1145 -8 1137 -13 1137 -39 ct 1137 -356 l p ef
1264 93 m 1303 68 1319 54 1338 30 ct 1376 -15 1394 -68 1394 -130 ct 1394 -198 1375 -249 1328 -303 ct
1306 -329 1293 -340 1265 -357 ct 1259 -349 l 1301 -315 1315 -297 1330 -257 ct
1343 -222 1349 -181 1349 -129 ct 1349 -74 1342 -30 1328 2 ct 1313 35 1297 54 1259 85 ct
p ef
pom
gr
3288 7132 m 3288 8090 l ps
4301 9104 m 6169 9104 l ps
4301 6118 m 6169 6118 l ps
3288 5104 m 3288 4146 l ps
7182 5104 m 7182 4146 l ps
6169 3132 m 4301 3132 l ps
gs
pum
3360 7489 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
653 -190 m 638 -190 626 -185 615 -175 ct 599 -160 588 -127 588 -94 ct 588 -64 598 -31 611 -15 ct
621 -2 636 3 652 3 ct 666 3 679 0 689 -10 ct 705 -26 716 -58 716 -93 ct 716 -150 l
690 -190 l p
652 -183 m 676 -183 689 -151 689 -92 ct 689 -33 676 -3 652 -3 ct 628 -3 615 -33 615 -92 ct
615 -152 l 628 -183 l p ef
pom
gr
gs
pum
5424 6484 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
653 -190 m 638 -190 626 -185 615 -175 ct 599 -160 588 -127 588 -94 ct 588 -64 598 -31 611 -15 ct
621 -2 636 3 652 3 ct 666 3 679 0 689 -10 ct 705 -26 716 -58 716 -93 ct 716 -150 l
690 -190 l p
652 -183 m 676 -183 689 -151 689 -92 ct 689 -33 676 -3 652 -3 ct 628 -3 615 -33 615 -92 ct
615 -152 l 628 -183 l p ef
pom
gr
gs
pum
7302 4446 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
653 -190 m 638 -190 626 -185 615 -175 ct 599 -160 588 -127 588 -94 ct 588 -64 598 -31 611 -15 ct
621 -2 636 3 652 3 ct 666 3 679 0 689 -10 ct 705 -26 716 -58 716 -93 ct 716 -150 l
690 -190 l p
652 -183 m 676 -183 689 -151 689 -92 ct 689 -33 676 -3 652 -3 ct 628 -3 615 -33 615 -92 ct
615 -152 l 628 -183 l p ef
pom
gr
gs
pum
3413 4473 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
653 -190 m 638 -190 626 -185 615 -175 ct 599 -160 588 -127 588 -94 ct 588 -64 598 -31 611 -15 ct
621 -2 636 3 652 3 ct 666 3 679 0 689 -10 ct 705 -26 716 -58 716 -93 ct 716 -150 l
690 -190 l p
652 -183 m 676 -183 689 -151 689 -92 ct 689 -33 676 -3 652 -3 ct 628 -3 615 -33 615 -92 ct
615 -152 l 628 -183 l p ef
pom
gr
gs
pum
4418 3467 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
664 -190 m 613 -164 l 613 -161 l 616 -162 619 -163 620 -164 ct 625 -166 630 -167 633 -167 ct
639 -167 642 -163 642 -153 ct 642 -26 l 642 -16 639 -10 635 -7 ct 631 -5 627 -4 615 -4 ct
615 0 l 693 0 l 693 -4 l 670 -4 666 -7 666 -20 ct 666 -190 l p ef
pom
gr
gs
pum
2513 5002 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
715 -38 m 712 -40 l 701 -23 698 -21 685 -21 ct 618 -21 l 665 -71 l 690 -97 701 -118 701 -140 ct
701 -168 678 -190 649 -190 ct 633 -190 619 -184 608 -173 ct 599 -163 595 -154 590 -134 ct
596 -133 l 607 -160 618 -169 637 -169 ct 661 -169 677 -153 677 -130 ct 677 -108 664 -81 640 -56 ct
590 -3 l 590 0 l 700 0 l p ef
pom
gr
gs
pum
5397 3044 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
664 -190 m 613 -164 l 613 -161 l 616 -162 619 -163 620 -164 ct 625 -166 630 -167 633 -167 ct
639 -167 642 -163 642 -153 ct 642 -26 l 642 -16 639 -10 635 -7 ct 631 -5 627 -4 615 -4 ct
615 0 l 693 0 l 693 -4 l 670 -4 666 -7 666 -20 ct 666 -190 l p ef
pom
gr
gs
pum
6376 5028 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
664 -190 m 613 -164 l 613 -161 l 616 -162 619 -163 620 -164 ct 625 -166 630 -167 633 -167 ct
639 -167 642 -163 642 -153 ct 642 -26 l 642 -16 639 -10 635 -7 ct 631 -5 627 -4 615 -4 ct
615 0 l 693 0 l 693 -4 l 670 -4 666 -7 666 -20 ct 666 -190 l p ef
pom
gr
gs
pum
4524 6060 t
161 -49 m 156 -38 152 -31 148 -27 ct 138 -16 123 -11 99 -11 ct 80 -11 l 60 -11 56 -12 56 -22 ct
56 -155 l 56 -175 60 -179 82 -181 ct 82 -186 l 3 -186 l 3 -181 l 24 -179 27 -175 27 -155 ct
27 -30 l 27 -11 23 -6 3 -5 ct 3 0 l 155 0 l 168 -49 l p ef
214 -30 m 214 -10 210 -6 189 -5 ct 189 0 l 269 0 l 302 0 331 -9 349 -25 ct
367 -41 378 -66 378 -94 ct 378 -119 369 -141 354 -157 ct 335 -176 304 -186 265 -186 ct
189 -186 l 189 -181 l 211 -179 214 -176 214 -155 ct p
243 -165 m 243 -174 246 -176 257 -176 ct 282 -176 300 -171 313 -162 ct 335 -146 347 -122 347 -92 ct
347 -58 335 -35 313 -22 ct 298 -13 282 -10 257 -10 ct 246 -10 243 -12 243 -22 ct
p ef
468 -174 m 468 -33 l 468 -9 465 -6 442 -5 ct 442 0 l 524 0 l 524 -5 l
501 -6 497 -10 497 -30 ct 497 -174 l 512 -174 l 544 -174 550 -169 557 -138 ct
564 -138 l 562 -186 l 403 -186 l 401 -138 l 408 -138 l 415 -169 421 -174 453 -174 ct
p ef
664 -190 m 613 -164 l 613 -161 l 616 -162 619 -163 620 -164 ct 625 -166 630 -167 633 -167 ct
639 -167 642 -163 642 -153 ct 642 -26 l 642 -16 639 -10 635 -7 ct 631 -5 627 -4 615 -4 ct
615 0 l 693 0 l 693 -4 l 670 -4 666 -7 666 -20 ct 666 -190 l p ef
pom
gr
1.000 0.003 0.003 c 4303 6248 m 4229 6248 4169 6187 4169 6113 ct 4169 6039 4229 5978 4303 5978 ct
4377 5978 4437 6039 4437 6113 ct 4437 6187 4377 6248 4303 6248 ct 4303 6248 l
p ef
0.003 0.003 0.003 c 4303 6248 m 4229 6248 4169 6187 4169 6113 ct 4169 6039 4229 5978 4303 5978 ct
4377 5978 4437 6039 4437 6113 ct 4437 6187 4377 6248 4303 6248 ct 4303 6248 l
pc
1.000 0.003 0.003 c 7216 5229 m 7142 5229 7082 5169 7082 5095 ct 7082 5021 7142 4961 7216 4961 ct
7290 4961 7350 5021 7350 5095 ct 7350 5169 7290 5229 7216 5229 ct 7216 5229 l
p ef
0.003 0.003 0.003 c 7216 5229 m 7142 5229 7082 5169 7082 5095 ct 7082 5021 7142 4961 7216 4961 ct
7290 4961 7350 5021 7350 5095 ct 7350 5169 7290 5229 7216 5229 ct 7216 5229 l
pc
1.000 0.003 0.003 c 6179 3279 m 6105 3279 6045 3219 6045 3145 ct 6045 3071 6105 3011 6179 3011 ct
6253 3011 6313 3071 6313 3145 ct 6313 3219 6253 3279 6179 3279 ct 6179 3279 l
p ef
0.003 0.003 0.003 c 6179 3279 m 6105 3279 6045 3219 6045 3145 ct 6045 3071 6105 3011 6179 3011 ct
6253 3011 6313 3071 6313 3145 ct 6313 3219 6253 3279 6179 3279 ct 6179 3279 l
pc
tm setmatrix
0 0 t
1 1 s
0 8033 t
pom
count op_count sub {pop} repeat countdictstack dict_count sub {end} repeat b4_inc_state restore
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