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The current usage model for iPXE is that the default configuration is
relatively minimal to reduce code size, with users encouraged to build
from source if necessary to enable additional features. This approach
is somewhat incompatible with the Secure Boot model, which by design
makes it prohibitively difficult for users to use their own compiled
binaries. For published Secure Boot signed binaries to be useful,
they will have to already include all features that the majority of
users will need.
Extend the default configuration for EFI (and other non-BIOS
platforms) to include HTTPS support, framebuffer support, and a
selection of commands and features that are reasonably expected to be
used by large numbers of users.
The default configuration for BIOS platforms is deliberately left
unchanged, since BIOS binaries are typically subject to severe size
constraints.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Move all settings source selection from config/defaults/<platform>.h
to the top-level config/settings.h, using indented conditional blocks
to clarify which sources are supported and enabled on each platform.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Mark all files used in a standard build of bin-x86_64-efi/snponly.efi
as permitted for UEFI Secure Boot. These files represent the core
functionality of iPXE that is guaranteed to have been included in
every binary that was previously subject to a security review and
signed by Microsoft. It is therefore legitimate to assume that at
least these files have already been reviewed to the required standard
multiple times.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Allow scripts to read basic information from USB device descriptors
via the settings mechanism. For example:
echo USB vendor ID: ${usb/${busloc}.8.2}
echo USB device ID: ${usb/${busloc}.10.2}
echo USB manufacturer name: ${usb/${busloc}.14.0}
The general syntax is
usb/<bus:dev>.<offset>.<length>
where bus:dev is the USB bus:device address (as obtained via the
"usbscan" command, or from e.g. ${net0/busloc} for a USB network
device), and <offset> and <length> select the required portion of the
USB device descriptor.
Following the usage of SMBIOS settings tags, a <length> of zero may be
used to indicate that the byte at <offset> contains a USB string
descriptor index, and an <offset> of zero may be used to indicate that
the <length> contains a literal USB string descriptor index.
Since the byte at offset zero can never contain a string index, and a
literal string index can never be zero, the combination of both
<length> and <offset> being zero may be used to indicate that the
entire device descriptor is to be read as a raw hex dump.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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EFI variables do not map neatly to the iPXE settings mechanism, since
the EFI variable identifier includes a namespace GUID that cannot
cleanly be supplied as part of a setting name. Creating a new EFI
variable requires the variable's attributes to be specified, which
does not fit within iPXE's settings concept.
However, EFI variable names are generally unique even without the
namespace GUID, and EFI does provide a mechanism to iterate over all
existent variables. We can therefore provide read-only access to EFI
variables by comparing only the names and ignoring the namespace
GUIDs.
Provide an "efi" settings block that implements this mechanism using a
syntax such as:
echo Platform language is ${efi/PlatformLang:string}
show efi/SecureBoot:int8
Settings are returned as raw binary values by default since an EFI
variable may contain boolean flags, integer values, ASCII strings,
UCS-2 strings, EFI device paths, X.509 certificates, or any other
arbitrary blob of data.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Allow values to be read from ACPI tables using the syntax
${acpi/<signature>.<index>.0.<offset>.<length>}
where <signature> is the ACPI table signature as a 32-bit hexadecimal
number (e.g. 0x41504093 for the 'APIC' signature on the MADT), <index>
is the index into the array of tables matching this signature,
<offset> is the byte offset within the table, and <length> is the
field length in bytes.
Numeric values are returned in reverse byte order, since ACPI numeric
values are usually little-endian.
For example:
${acpi/0x41504943.0.0.0.0} - entire MADT table in raw hex
${acpi/0x41504943.0.0.0x0a.6:string} - MADT table OEM ID
${acpi/0x41504943.0.0.0x24.4:uint32} - local APIC address
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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The "vram" setting returns the (Base64-encoded) contents of video RAM,
and can be used to capture a screenshot. For example: after running
memtest.0 and encountering an error, the output can be captured and
sent to a remote server for later diagnosis:
#!ipxe
chain -a http://server/memtest.0 && goto ok || goto bad
:bad
params
param errno ${errno}
param vram ${vram}
chain -a http://server/report.php##params
:ok
Inspired-by: Christian Nilsson <nikize@gmail.com>
Originally-implemented-by: Christian Nilsson <nikize@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Relicense files for which I am the sole author (as identified by
util/relicense.pl).
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Allow named configurations to be specified via the CONFIG=... build
parameter. For headers in config/*.h which support named
configurations, the following files will be included when building
with CONFIG=<name>:
- config/defaults/<platform>.h (e.g. config/defaults/pcbios.h)
- config/<header>.h
- config/<name>/<header>.h (only if the directory config/<name> exists)
- config/local/<header>.h (autocreated if necessary)
- config/local/<name>/<header>.h (autocreated if necessary)
This mechanism allows for predefined named configurations to be
checked in to the source tree, as a directory config/<name> containing
all of the required header files.
The mechanism also allows for users to define multiple local
configurations, by creating header files in the directory
config/local/<name>.
Note that the config/*.h files which are used only to configure
internal iPXE APIs (e.g. config/ioapi.h) cannot be modified via a
named configuration. This avoids rebuilding the entire iPXE codebase
whenever switching to a different named configuration.
Inspired-by: Robin Smidsrød <robin@smidsrod.no>
Tested-by: Robin Smidsrød <robin@smidsrod.no>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Allow memory map entries to be read using the syntax
${memmap/<region>.<properties>.<scale>}
where <region> is the index of the memory region, <properties> is a
bitmask where bit 0 represents the start address and bit 1 represents
the length (allowing the end address to be encoded by having both bits
0 and 1 set), and <scale> is the number of bits by which to shift the
result.
This allows for several values of interest to be encoded. For
example:
${memmap/<region>.1.0:hexraw} # 64-bit start address of <region>
${memmap/<region>.2.0:hexraw} # 64-bit length of <region>, in bytes
${memmap/<region>.3.0:hexraw} # 64-bit end address of <region>
${memmap/<region>.2.10:int32} # Length of <region>, in kB
${memmap/<region>.2.20:int32} # Length of <region>, in MB
The numeric encoding is slightly more sophisticated than described
here, allowing a single encoding to cover multiple regions. (See the
source code for details.) The primary use case for this feature is to
provide the total system memory size (in MB) via the "memsize"
predefined setting.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Allow CPUID values to be read using the syntax
${cpuid/<register>.<function>}
For example, ${cpuid/2.0x80000001} will give the value of %ecx after
calling CPUID with %eax=0x80000001. Values for <register> are encoded
as %eax=0, %ebx=1, %ecx=2, %edx=3.
The numeric encoding is more sophisticated than described above,
allowing for settings such as the CPU model (obtained by calling CPUID
with %eax=0x80000002-0x80000004 inclusive and concatenating the values
returned in %eax:%ebx:%ecx:%edx). See the source code for details.
The "cpuvendor" and "cpumodel" settings provide easy access to these
more complex CPUID settings.
This functionality is intended to complement the "cpuid" command,
which allows for testing individual CPUID feature bits.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Allow values to be read from PCI configuration space using the syntax
${pci/<busdevfn>.<offset>.<length>}
where <busdevfn> is the bus:dev.fn address of the PCI device
(expressed as a single integer, as returned by ${net0/busloc}),
<offset> is the offset within PCI configuration space, and <length> is
the length within PCI configuration space.
Values are returned in reverse byte order, since PCI configuration
space is little-endian by definition.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Move VMWARE_SETTINGS build configuration option from config/sideband.h
to a new config/settings.h.
Existing instances of config/local/sideband.h will not be affected,
since config.c still #includes config/sideband.h.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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