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Merge pull request #594 from jcastillo-arm/jc/user-guide 

Update User Guide and move up to Linaro 16.02
parents 81b491ff ec0a975f
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docs/user-guide.md
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......@@ -8,26 +8,39 @@ Contents :
3. [Tools](#3--tools)
4. [Getting the Trusted Firmware source code](#4--getting-the-trusted-firmware-source-code)
5. [Building the Trusted Firmware](#5--building-the-trusted-firmware)
6. [Building the rest of the software stack](#6--building-the-rest-of-the-software-stack)
6. [Building a FIP for Juno and FVP](#6--building-a-fip-for-juno-and-fvp)
7. [EL3 payloads alternative boot flow](#7--el3-payloads-alternative-boot-flow)
8. [Preloaded BL33 alternative boot flow](#8--preloaded-bl33-alternative-boot-flow)
9. [Preparing the images to run on FVP](#9--preparing-the-images-to-run-on-fvp)
10. [Running the software on FVP](#10--running-the-software-on-fvp)
11. [Running the software on Juno](#11--running-the-software-on-juno)
12. [Changes required for booting Linux on FVP in GICv3 mode](#12--changes-required-for-booting-linux-on-fvp-in-gicv3-mode)
9. [Running the software on FVP](#9--running-the-software-on-fvp)
10. [Running the software on Juno](#10--running-the-software-on-juno)
1. Introduction
----------------
This document describes how to build ARM Trusted Firmware and run it with a
This document describes how to build ARM Trusted Firmware (TF) and run it with a
tested set of other software components using defined configurations on the Juno
ARM development platform and ARM Fixed Virtual Platform (FVP) models. It is
possible to use other software components, configurations and platforms but that
is outside the scope of this document.
This document should be used in conjunction with the [Firmware Design] and the
[Instructions for using the Linaro software deliverables][Linaro SW Instructions].
This document assumes that the reader has previous experience running a fully
bootable Linux software stack on Juno or FVP using the prebuilt binaries and
filesystems provided by [Linaro][Linaro Release Notes]. Further information may
be found in the [Instructions for using the Linaro software deliverables][Linaro
SW Instructions]. It also assumes that the user understands the role of the
different software components required to boot a Linux system:
* Specific firmware images required by the platform (e.g. SCP firmware on Juno)
* Normal world bootloader (e.g. UEFI or U-Boot)
* Device tree
* Linux kernel image
* Root filesystem
This document also assumes that the user is familiar with the FVP models and
the different command line options available to launch the model.
This document should be used in conjunction with the [Firmware Design].
2. Host machine requirements
......@@ -48,53 +61,28 @@ Cygwin, and Msys (MinGW) shells, using version 4.9.1 of the GNU toolchain.
3. Tools
---------
In addition to the mandatory prerequisite tools listed in the [instructions for
using the Linaro software deliverables][Linaro SW Instructions], the following
optional tools may be needed:
* `device-tree-compiler` package if you need to rebuild the Flattened Device
Tree (FDT) source files (`.dts` files) provided with this software.
Install the required packages to build Trusted Firmware with the following
command:
* For debugging, ARM [Development Studio 5 (DS-5)][DS-5] v5.22.
sudo apt-get install build-essential gcc make git
Download and install the AArch64 little-endian GCC cross compiler as indicated
in the [Linaro instructions][Linaro SW Instructions].
4. Getting the Trusted Firmware source code
--------------------------------------------
In addition, the following optional packages and tools may be needed:
The Trusted Firmware (TF) source code can be obtained as part of the standard
Linaro releases, which provide a full software stack, including TF, normal
world firmware, Linux kernel and device tree, file system as well as any
additional micro-controller firmware required by the platform. This TF version
is tested with the [Linaro 15.10 Release][Linaro Release Notes].
Note 1: Both the LSK kernel or the latest tracking kernel can be used with TF;
choose the one that best suits your needs.
Note 2: Currently to run the latest tracking kernel on FVP with GICv3 driver,
some modifications are required to UEFI. Refer
[here](#11--changes-required-for-booting-linux-on-fvp-in-gicv3-mode)
for more details.
The TF source code will then be in `arm-tf/`. This is the upstream git
repository cloned from GitHub. The revision checked out by the `repo` tool is
indicated by the manifest file. Depending on the manifest file you're using,
this might not be the latest upstream version. To synchronize your copy of the
repository and get the latest updates, use the following commands:
* `device-tree-compiler` package if you need to rebuild the Flattened Device
Tree (FDT) source files (`.dts` files) provided with this software.
# Change to the Trusted Firmware directory.
cd arm-tf
* `libssl-dev` package if Trusted Board Boot is enabled in the build.
# Download the latest code from GitHub.
git fetch github
* For debugging, ARM [Development Studio 5 (DS-5)][DS-5].
# Update your working copy to the latest master.
# This command will create a local branch master that tracks the remote
# branch master from GitHub.
git checkout --track github/master
4. Getting the Trusted Firmware source code
--------------------------------------------
Alternatively, the TF source code can be separately cloned from the upstream
GitHub repository:
Download the Trusted Firmware source code from Github:
git clone https://github.com/ARM-software/arm-trusted-firmware.git
......@@ -102,60 +90,42 @@ GitHub repository:
5. Building the Trusted Firmware
---------------------------------
To build the Trusted Firmware images, change to the root directory of the
Trusted Firmware source tree and follow these steps:
* Before building Trusted Firmware, the environment variable `CROSS_COMPILE`
must point to the Linaro cross compiler:
1. Set the compiler path, specify a Non-trusted Firmware image (BL33) and
a valid platform, and then build:
export CROSS_COMPILE=<path-to-aarch64-gcc>/bin/aarch64-linux-gnu-
CROSS_COMPILE=<path-to-aarch64-gcc>/bin/aarch64-linux-gnu- \
BL33=<path-to>/<bl33_image> \
make PLAT=<platform> all fip
* Change to the root directory of the Trusted Firmware source tree and build:
If `PLAT` is not specified, `fvp` is assumed by default. See the "Summary of
build options" for more information on available build options.
make PLAT=<platform> all
The BL33 image corresponds to the software that is executed after switching
to the non-secure world. UEFI can be used as the BL33 image. Refer to the
"Building the rest of the software stack" section below.
Notes:
The TSP (Test Secure Payload), corresponding to the BL32 image, is not
compiled in by default. Refer to the "Building the Test Secure Payload"
section below.
* If `PLAT` is not specified, `fvp` is assumed by default. See the
"Summary of build options" for more information on available build
options.
By default this produces a release version of the build. To produce a debug
version instead, refer to the "Debugging options" section below.
* The TSP (Test Secure Payload), corresponding to the BL32 image, is not
compiled in by default. Refer to the "Building the Test Secure Payload"
section below.
The build process creates products in a `build` directory tree, building
the objects and binaries for each boot loader stage in separate
sub-directories. The following boot loader binary files are created from
the corresponding ELF files:
* By default this produces a release version of the build. To produce a
debug version instead, refer to the "Debugging options" section below.
* `build/<platform>/<build-type>/bl1.bin`
* `build/<platform>/<build-type>/bl2.bin`
* `build/<platform>/<build-type>/bl31.bin`
* The build process creates products in a `build` directory tree, building
the objects and binaries for each boot loader stage in separate
sub-directories. The following boot loader binary files are created
from the corresponding ELF files:
where `<platform>` is the name of the chosen platform and `<build-type>` is
either `debug` or `release`. A Firmware Image Package (FIP) will be created
as part of the build. It contains all boot loader images except for
`bl1.bin`.
* `build/<platform>/<build-type>/bl1.bin`
* `build/<platform>/<build-type>/bl2.bin`
* `build/<platform>/<build-type>/bl31.bin`
* `build/<platform>/<build-type>/fip.bin`
where `<platform>` is the name of the chosen platform and `<build-type>`
is either `debug` or `release`. The actual number of images might differ
depending on the platform.
For more information on FIPs, see the "Firmware Image Package" section in
the [Firmware Design].
2. (Optional) Some platforms may require a SCP_BL2 image to boot. This image can
be included in the FIP when building the Trusted Firmware by specifying the
`SCP_BL2` build option:
SCP_BL2=<path-to>/<scp_bl2_image>
3. Output binary files `bl1.bin` and `fip.bin` are both required to boot the
system. How these files are used is platform specific. Refer to the
platform documentation on how to use the firmware images.
4. (Optional) Build products for a specific build variant can be removed using:
* Build products for a specific build variant can be removed using:
make DEBUG=<D> PLAT=<platform> clean
......@@ -165,16 +135,6 @@ Trusted Firmware source tree and follow these steps:
make realclean
5. (Optional) Path to binary for certain BL stages (BL2, BL31 and BL32) can be
provided by specifying the BLx=<path-to>/<blx_image> where BLx is the BL stage.
This will bypass the build of the BL component from source, but will include
the specified binary in the final FIP image. Please note that BL32 will be
included in the build, only if the `SPD` build option is specified.
For example, specifying `BL2=<path-to>/<bl2_image>` in the build option,
will skip compilation of BL2 source in trusted firmware, but include the BL2
binary specified in the final FIP image.
### Summary of build options
ARM Trusted Firmware build system supports the following build options. Unless
......@@ -223,9 +183,6 @@ performed.
optional. It is only needed if the platform makefile specifies that it
is required in order to build the `fwu_fip` target.
* `CROSS_COMPILE`: Prefix to toolchain binaries. Please refer to examples in
this document for usage.
* `DEBUG`: Chooses between a debug and release build. It can take either 0
(release) or 1 (debug) as values. 0 is the default.
......@@ -536,68 +493,12 @@ map is explained in the [Firmware Design].
Trusted Firmware is configured for dual cluster topology and this option
can be used to override the default value.
### Creating a Firmware Image Package
FIPs are automatically created as part of the build instructions described in
the previous section. It is also possible to independently build the FIP
creation tool and FIPs if required. To do this, follow these steps:
Build the tool:
make -C tools/fip_create
It is recommended to remove the build artifacts before rebuilding:
make -C tools/fip_create clean
Create a Firmware package that contains existing BL2 and BL31 images:
# fip_create --help to print usage information
# fip_create <fip_name> <images to add> [--dump to show result]
./tools/fip_create/fip_create fip.bin --dump \
--tb-fw build/<platform>/debug/bl2.bin --soc-fw build/<platform>/debug/bl31.bin
Firmware Image Package ToC:
---------------------------
- Trusted Boot Firmware BL2: offset=0x88, size=0x81E8
file: 'build/<platform>/debug/bl2.bin'
- EL3 Runtime Firmware BL31: offset=0x8270, size=0xC218
file: 'build/<platform>/debug/bl31.bin'
---------------------------
Creating "fip.bin"
View the contents of an existing Firmware package:
./tools/fip_create/fip_create fip.bin --dump
Firmware Image Package ToC:
---------------------------
- Trusted Boot Firmware BL2: offset=0x88, size=0x81E8
- EL3 Runtime Firmware BL31: offset=0x8270, size=0xC218
---------------------------
Existing package entries can be individually updated:
# Change the BL2 from Debug to Release version
./tools/fip_create/fip_create fip.bin --dump \
--tb-fw build/<platform>/release/bl2.bin
Firmware Image Package ToC:
---------------------------
- Trusted Boot Firmware BL2: offset=0x88, size=0x7240
file: 'build/<platform>/release/bl2.bin'
- EL3 Runtime Firmware BL31: offset=0x72C8, size=0xC218
---------------------------
Updating "fip.bin"
### Debugging options
To compile a debug version and make the build more verbose use
CROSS_COMPILE=<path-to-aarch64-gcc>/bin/aarch64-linux-gnu- \
BL33=<path-to>/<bl33_image> \
make PLAT=<platform> DEBUG=1 V=1 all fip
make PLAT=<platform> DEBUG=1 V=1 all
AArch64 GCC uses DWARF version 4 debugging symbols by default. Some tools (for
example DS-5) might not support this and may need an older version of DWARF
......@@ -615,9 +516,7 @@ platforms** section in the [Firmware Design]).
Extra debug options can be passed to the build system by setting `CFLAGS`:
CFLAGS='-O0 -gdwarf-2' \
CROSS_COMPILE=<path-to-aarch64-gcc>/bin/aarch64-linux-gnu- \
BL33=<path-to>/<bl33_image> \
make PLAT=<platform> DEBUG=1 V=1 all fip
make PLAT=<platform> DEBUG=1 V=1 all
It is also possible to introduce an infinite loop to help in debugging the
post-BL2 phase of the Trusted Firmware. This can be done by rebuilding BL1 with
......@@ -639,6 +538,7 @@ commands can be used:
# Resume execution
continue
### Building the Test Secure Payload
The TSP is coupled with a companion runtime service in the BL31 firmware,
......@@ -647,48 +547,101 @@ must be recompiled as well. For more information on SPs and SPDs, see the
"Secure-EL1 Payloads and Dispatchers" section in the [Firmware Design].
First clean the Trusted Firmware build directory to get rid of any previous
BL31 binary. Then to build the TSP image and include it into the FIP use:
BL31 binary. Then to build the TSP image use:
CROSS_COMPILE=<path-to-aarch64-gcc>/bin/aarch64-linux-gnu- \
BL33=<path-to>/<bl33_image> \
make PLAT=<platform> SPD=tspd all fip
make PLAT=<platform> SPD=tspd all
An additional boot loader binary file is created in the `build` directory:
* `build/<platform>/<build-type>/bl32.bin`
`build/<platform>/<build-type>/bl32.bin`
The FIP will now contain the additional BL32 image. Here is an example
output from an FVP build in release mode including BL32 and using
`FVP_AARCH64_EFI.fd` as BL33 image:
Firmware Image Package ToC:
---------------------------
- Trusted Boot Firmware BL2: offset=0xD8, size=0x6000
file: './build/fvp/release/bl2.bin'
- EL3 Runtime Firmware BL31: offset=0x60D8, size=0x9000
file: './build/fvp/release/bl31.bin'
- Secure Payload BL32 (Trusted OS): offset=0xF0D8, size=0x3000
file: './build/fvp/release/bl32.bin'
- Non-Trusted Firmware BL33: offset=0x120D8, size=0x280000
file: '../FVP_AARCH64_EFI.fd'
---------------------------
Creating "build/fvp/release/fip.bin"
### Checking source code style
When making changes to the source for submission to the project, the source
must be in compliance with the Linux style guide, and to assist with this check
the project Makefile contains two targets, which both utilise the
`checkpatch.pl` script that ships with the Linux source tree.
To check the entire source tree, you must first download a copy of
`checkpatch.pl` (or the full Linux source), set the `CHECKPATCH` environment
variable to point to the script and build the target checkcodebase:
### Building the Certificate Generation Tool
make CHECKPATCH=<path-to-linux>/linux/scripts/checkpatch.pl checkcodebase
The `cert_create` tool can be built separately through the following commands:
To just check the style on the files that differ between your local branch and
the remote master, use:
$ cd tools/cert_create
$ make PLAT=<platform> [DEBUG=1] [V=1]
make CHECKPATCH=<path-to-linux>/linux/scripts/checkpatch.pl checkpatch
`DEBUG=1` builds the tool in debug mode. `V=1` makes the build process more
verbose. The following command should be used to obtain help about the tool:
If you wish to check your patch against something other than the remote master,
set the `BASE_COMMIT` variable to your desired branch. By default, `BASE_COMMIT`
is set to `origin/master`.
$ ./cert_create -h
The `cert_create` tool is automatically built with the `fip` target when
`GENERATE_COT=1`.
### Building and using the FIP tool
Firmware Image Package (FIP) is a packaging format used by the Trusted Firmware
project to package firmware images in a single binary. The number and type of
images that should be packed in a FIP is platform specific and may include TF
images and other firmware images required by the platform. For example, most
platforms require a BL33 image which corresponds to the normal world bootloader
(e.g. UEFI or U-Boot).
The TF build system provides the make target `fip` to create a FIP file for the
specified platform using the FIP creation tool included in the TF project. For
example, to build a FIP file for FVP, packaging TF images and a BL33 image:
make PLAT=fvp BL33=<path/to/bl33.bin> fip
The resulting FIP may be found in:
`build/fvp/<build-type>/fip.bin`
For advanced operations on FIP files, it is also possible to independently build
the tool and create or modify FIPs using this tool. To do this, follow these
steps:
It is recommended to remove old artifacts before building the tool:
make -C tools/fip_create clean
Build the tool:
make [DEBUG=1] [V=1] fiptool
The tool binary can be located in:
./tools/fip_create/fip_create
Invoking the tool with `--help` will print a help message with all available
options.
Example 1: create a new Firmware package `fip.bin` that contains BL2 and BL31:
./tools/fip_create/fip_create \
--tb-fw build/<platform>/<build-type>/bl2.bin \
--soc-fw build/<platform>/<build-type>/bl31.bin \
fip.bin
Example 2: view the contents of an existing Firmware package:
./tools/fip_create/fip_create --dump <path-to>/fip.bin
Example 3: update the entries of an existing Firmware package:
# Change the BL2 from Debug to Release version
./tools/fip_create/fip_create \
--tb-fw build/<platform>/release/bl2.bin \
build/<platform>/debug/fip.bin
Example 4: unpack all entries from an existing Firmware package:
# Images will be unpacked to the working directory
./tools/fip_create/fip_create --unpack <path-to>/fip.bin
More information about FIP can be found in the [Firmware Design document]
[Firmware Design].
### Building FIP images with support for Trusted Board Boot
......@@ -742,18 +695,17 @@ images with support for these features:
Example of command line using RSA development keys:
CROSS_COMPILE=<path-to-aarch64-gcc>/bin/aarch64-linux-gnu- \
BL33=<path-to>/<bl33_image> \
MBEDTLS_DIR=<path of the directory containing mbed TLS sources> \
make PLAT=<platform> TRUSTED_BOARD_BOOT=1 GENERATE_COT=1 \
ARM_ROTPK_LOCATION=devel_rsa \
ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem \
BL33=<path-to>/<bl33_image> \
all fip
The result of this build will be the bl1.bin and the fip.bin binaries, with
the difference that the FIP will include the certificates corresponding to
the Chain of Trust described in the TBBR-client document. These certificates
can also be found in the output build directory.
The result of this build will be the bl1.bin and the fip.bin binaries. This
FIP will include the certificates corresponding to the Chain of Trust
described in the TBBR-client document. These certificates can also be found
in the output build directory.
3. The optional FWU_FIP contains any additional images to be loaded from
Non-Volatile storage during the [Firmware Update] process. To build the
......@@ -766,15 +718,14 @@ images with support for these features:
Example of Juno command line for generating both `fwu` and `fwu_fip`
targets using RSA development:
CROSS_COMPILE=<path-to-aarch64-gcc>/bin/aarch64-none-elf- \
BL33=<path-to>/<bl33_image> \
SCP_BL2=<path-to>/<scp_bl2_image> \
SCP_BL2U=<path-to>/<scp_bl2u_image> \
NS_BL2U=<path-to>/<ns_bl2u_image> \
MBEDTLS_DIR=<path of the directory containing mbed TLS sources> \
make PLAT=juno TRUSTED_BOARD_BOOT=1 GENERATE_COT=1 \
ARM_ROTPK_LOCATION=devel_rsa \
ROT_KEY=plat/arm/board/common/rotpk/arm_rotprivk_rsa.pem \
BL33=<path-to>/<bl33_image> \
SCP_BL2=<path-to>/<scp_bl2_image> \
SCP_BL2U=<path-to>/<scp_bl2u_image> \
NS_BL2U=<path-to>/<ns_bl2u_image> \
all fip fwu_fip
Note: The BL2U image will be built by default and added to the FWU_FIP.
......@@ -790,91 +741,74 @@ images with support for these features:
can also be found in the output build directory.
### Checking source code style
When making changes to the source for submission to the project, the source
must be in compliance with the Linux style guide, and to assist with this check
the project Makefile contains two targets, which both utilise the
`checkpatch.pl` script that ships with the Linux source tree.
To check the entire source tree, you must first download a copy of
`checkpatch.pl` (or the full Linux source), set the `CHECKPATCH` environment
variable to point to the script and build the target checkcodebase:
make CHECKPATCH=<path-to-linux>/linux/scripts/checkpatch.pl checkcodebase
To just check the style on the files that differ between your local branch and
the remote master, use:
make CHECKPATCH=<path-to-linux>/linux/scripts/checkpatch.pl checkpatch
If you wish to check your patch against something other than the remote master,
set the `BASE_COMMIT` variable to your desired branch. By default, `BASE_COMMIT`
is set to `origin/master`.
6. Building the rest of the software stack
-------------------------------------------
### Building the Certificate Generation Tool
The Linaro release provides a set of scripts that automate the process of
building all components of the software stack. However, the scripts only support
a limited number of Trusted Firmware build options. Therefore, it is recommended
to modify these scripts to build all components except Trusted Firmware, and
build Trusted Firmware separately as described in the section "Building the
Trusted Firmware" above.
The `cert_create` tool is built as part of the TF build process when the `fip`
make target is specified and TBB is enabled (as described in the previous
section), but it can also be built separately with the following command:
The instructions below are targeted at an OpenEmbedded filesystem.
make PLAT=<platform> [DEBUG=1] [V=1] certtool
1. To exclude Trusted Firmware from the automated build process, edit the
variant file `build-scripts/variants/<platform>-oe`, where `<platform>`
is either `fvp` or `juno`. Add the following lines at the end of the file:
Specifying the platform is mandatory since the tool is platform specific.
`DEBUG=1` builds the tool in debug mode. `V=1` makes the build process more
verbose. The following command should be used to obtain help about the tool:
# Disable ARM Trusted Firmware build
ARM_TF_BUILD_ENABLED=0
./tools/cert_create/cert_create -h
2. Launch the build script:
CROSS_COMPILE=aarch64-linux-gnu- \
build-scripts/build-all.sh <platform>-oe
6. Building a FIP for Juno and FVP
-----------------------------------
### Preparing the Firmware Image Package
This section provides Juno and FVP specific instructions to build Trusted
Firmware, obtain the additional required firmware, and pack it all together in
a single FIP binary. It assumes that a [Linaro Release][Linaro Release Notes]
has been installed.
The EDK2 binary should be specified as `BL33` in the `make` command line when
building the Trusted Firmware. See the "Building the Trusted Firmware" section
above. The EDK2 binary for use with the ARM Trusted Firmware can be found here:
Note: follow the full instructions for one platform before switching to a
different one. Mixing instructions for different platforms may result in
corrupted binaries.
uefi/edk2/Build/ArmVExpress-FVP-AArch64-Minimal/DEBUG_GCC49/FV/FVP_AARCH64_EFI.fd [for FVP]
uefi/edk2/Build/ArmJuno/DEBUG_GCC49/FV/BL33_AP_UEFI.fd [for Juno]
1. Clean the working directory
### Building an alternative EDK2
make realclean
* By default, EDK2 is built in debug mode. To build a release version instead,
change the following line in the variant file:
2. Obtain SCP_BL2 (Juno) and BL33 (all platforms)
UEFI_BUILD_MODE=DEBUG
Use the fip_create tool to extract the SCP_BL2 and BL33 images from the FIP
package included in the Linaro release:
into:
# Build the fip_create tool
make [DEBUG=1] [V=1] fiptool
UEFI_BUILD_MODE=RELEASE
# Unpack firmware images from Linaro FIP
./tools/fip_create/fip_create --unpack \
<path/to/linaro/release>/fip.bin
* On FVP, if legacy GICv2 locations are used, the EDK2 platform makefile must
be updated. This is required as EDK2 does not support probing for the GIC
location. To do this, first clean the EDK2 build directory:
The unpack operation will result in a set of binary images extracted to the
working directory. The SCP_BL2 image corresponds to `scp-fw.bin` and BL33
corresponds to `nt-fw.bin`.
build-scripts/build-uefi.sh fvp-oe clean
Note: the fip_create tool will complain if the images to be unpacked already
exist in the current directory. If that is the case, either delete those
files or use the `--force` option to overwrite.
Then edit the following file:
3. Build TF images and create a new FIP
uefi/edk2/ArmPlatformPkg/ArmVExpressPkg/ArmVExpress-FVP-AArch64.mak
# Juno
make PLAT=juno SCP_BL2=scp-fw.bin BL33=nt-fw.bin all fip
and add the following build flag into the `EDK2_MACROS` variable:
# FVP
make PLAT=fvp BL33=nt-fw.bin all fip
-D ARM_FVP_LEGACY_GICV2_LOCATION=1
The resulting BL1 and FIP images may be found in:
Then rebuild everything as described above in step 2.
# Juno
./build/juno/release/bl1.bin
./build/juno/release/fip.bin
Finally rebuild the Trusted Firmware to generate a new FIP using the
instructions in the "Building the Trusted Firmware" section.
# FVP
./build/fvp/release/bl1.bin
./build/fvp/release/fip.bin
7. EL3 payloads alternative boot flow
......@@ -1006,7 +940,6 @@ used when compiling the Trusted Firmware. For example, the following command
will create a FIP without a BL33 and prepare to jump to a BL33 image loaded at
address 0x80000000:
CROSS_COMPILE=<path-to>/bin/aarch64-linux-gnu- \
make PRELOADED_BL33_BASE=0x80000000 PLAT=fvp all fip
#### Boot of a preloaded bootwrapped kernel image on Base FVP
......@@ -1040,11 +973,33 @@ above in the EL3 payload boot flow section may be used to load the ELF file over
JTAG on Juno.
9. Preparing the images to run on FVP
--------------------------------------
9. Running the software on FVP
-------------------------------
This version of the ARM Trusted Firmware has been tested on the following ARM
FVPs (64-bit versions only).
* `Foundation_Platform` (Version 9.5, Build 9.5.40)
* `FVP_Base_AEMv8A-AEMv8A` (Version 7.2, Build 0.8.7202)
* `FVP_Base_Cortex-A57x4-A53x4` (Version 7.2, Build 0.8.7202)
* `FVP_Base_Cortex-A57x1-A53x1` (Version 7.2, Build 0.8.7202)
* `FVP_Base_Cortex-A57x2-A53x4` (Version 7.2, Build 0.8.7202)
NOTE: The build numbers quoted above are those reported by launching the FVP
with the `--version` parameter. `Foundation_Platform` tarball for `--version`
9.5.40 is labeled as version 9.5.41.
NOTE: The software will not work on Version 1.0 of the Foundation FVP.
The commands below would report an `unhandled argument` error in this case.
Note: This section can be ignored when booting an EL3 payload, as no Flattened
Device Tree or kernel image is needed in this case.
NOTE: The Foundation FVP does not provide a debugger interface.
The Foundation FVP is a cut down version of the AArch64 Base FVP. It can be
downloaded for free from [ARM's website][ARM FVP website].
Please refer to the FVP documentation for a detailed description of the model
parameter options. A brief description of the important ones that affect the ARM
Trusted Firmware and normal world software behavior is provided below.
### Obtaining the Flattened Device Trees
......@@ -1084,48 +1039,6 @@ all FDTs are available from there.
For use with Foundation FVP with Base memory map configuration and Linux
GICv3 support.
Copy the chosen FDT blob as `fdt.dtb` to the directory from which the FVP
is launched. Alternatively a symbolic link may be used.
### Preparing the kernel image
Copy the kernel image file `linux/arch/arm64/boot/Image` to the directory from
which the FVP is launched. Alternatively a symbolic link may be used.
10. Running the software on FVP
--------------------------------
This version of the ARM Trusted Firmware has been tested on the following ARM
FVPs (64-bit versions only).
* `Foundation_Platform` (Version 9.5, Build 9.5.40)
* `FVP_Base_AEMv8A-AEMv8A` (Version 7.2, Build 0.8.7202)
* `FVP_Base_Cortex-A57x4-A53x4` (Version 7.2, Build 0.8.7202)
* `FVP_Base_Cortex-A57x1-A53x1` (Version 7.2, Build 0.8.7202)
* `FVP_Base_Cortex-A57x2-A53x4` (Version 7.2, Build 0.8.7202)
NOTE: The build numbers quoted above are those reported by launching the FVP
with the `--version` parameter. `Foundation_Platform` tarball for `--version`
9.5.40 is labeled as version 9.5.41.
NOTE: The software will not work on Version 1.0 of the Foundation FVP.
The commands below would report an `unhandled argument` error in this case.
NOTE: The Foundation FVP does not provide a debugger interface.
The Foundation FVP is a cut down version of the AArch64 Base FVP. It can be
downloaded for free from [ARM's website][ARM FVP website].
The Linaro release provides a script to run the software on FVP. However, it
only supports a limited number of model parameter options. Therefore, it is
recommended to launch the FVP manually for all use cases described below.
Please refer to the FVP documentation for a detailed description of the model
parameter options. A brief description of the important ones that affect the ARM
Trusted Firmware and normal world software behavior is provided below.
### Running on the Foundation FVP with reset to BL1 entrypoint
The following `Foundation_Platform` parameters should be used to boot Linux with
......@@ -1142,81 +1055,14 @@ The following `Foundation_Platform` parameters should be used to boot Linux with
--data="<path-to>/<kernel-binary>"@0x80080000 \
--block-device="<path-to>/<file-system-image>"
1. The `--data="<path-to-some-binary>"@0x...` parameters are used to load
binaries into memory.
* BL1 is loaded at the start of the Trusted ROM.
* The Firmware Image Package is loaded at the start of NOR FLASH0.
* The Linux kernel image and device tree are loaded in DRAM.
2. The `--block-device` parameter is used to specify the path to the file
system image provided to Linux via VirtioBlock. Note that it must point to
the real file and that a symbolic link to this file cannot be used with the
FVP.
The default use-case for the Foundation FVP is to enable the GICv3 device in
the model but use the GICv2 FDT, in order for Linux to drive the GIC in GICv2
emulation mode.
### Notes regarding Base FVP configuration options
Please refer to these notes in the subsequent "Running on the Base FVP"
sections.
1. The `-C bp.flashloader0.fname` parameter is used to load a Firmware Image
Package at the start of NOR FLASH0 (see the "Building the Trusted Firmware"
section above).
2. Using `cache_state_modelled=1` makes booting very slow. The software will
still work (and run much faster) without this option but this will hide any
cache maintenance defects in the software.
3. The `-C bp.virtioblockdevice.image_path` parameter is used to specify the
path to the file system image provided to Linux via VirtioBlock. Note that
it must point to the real file and that a symbolic link to this file cannot
be used with the FVP. Ensure that the FVP doesn't output any error messages.
If the following error message is displayed:
ERROR: BlockDevice: Failed to open "<path-to>/<file-system-image>"!
then make sure the path to the file-system image in the model parameter is
correct and that read permission is correctly set on the file-system image
file.
4. Setting the `-C bp.secure_memory` parameter to `1` is only supported on
Base FVP versions 5.4 and newer. Setting this parameter to `0` is also
supported. The `-C bp.tzc_400.diagnostics=1` parameter is optional. It
instructs the FVP to provide some helpful information if a secure memory
violation occurs.
5. The `--data="<path-to-some-binary>"@<base-address-of-binary>` parameter is
used to load images into Base FVP memory. The base addresses used should
match the image base addresses used while linking the images. This parameter
is used to load the Linux kernel image and device tree into DRAM.
6. This and the following notes only apply when the firmware is built with
the `RESET_TO_BL31` option.
The `--data="<path-to><bl31|bl32|bl33-binary>"@<base-address-of-binary>`
parameter is needed to load the individual bootloader images in memory.
BL32 image is only needed if BL31 has been built to expect a Secure-EL1
Payload.
7. The `-C cluster<X>.cpu<Y>.RVBAR=@<base-address-of-bl31>` parameter, where
X and Y are the cluster and CPU numbers respectively, is used to set the
reset vector for each core.
8. Changing the default value of `ARM_TSP_RAM_LOCATION` will also require
changing the value of
`--data="<path-to><bl32-binary>"@<base-address-of-bl32>` to the new value of
`BL32_BASE`.
Notes:
* BL1 is loaded at the start of the Trusted ROM.
* The Firmware Image Package is loaded at the start of NOR FLASH0.
* The Linux kernel image and device tree are loaded in DRAM.
### Running on the AEMv8 Base FVP with reset to BL1 entrypoint
Please read "Notes regarding Base FVP configuration options" section above for
information about some of the options to run the software.
The following `FVP_Base_AEMv8A-AEMv8A` parameters should be used to boot Linux
with 8 CPUs using the ARM Trusted Firmware.
......@@ -1235,9 +1081,6 @@ with 8 CPUs using the ARM Trusted Firmware.
### Running on the Cortex-A57-A53 Base FVP with reset to BL1 entrypoint
Please read "Notes regarding Base FVP configuration options" section above for
information about some of the options to run the software.
The following `FVP_Base_Cortex-A57x4-A53x4` model parameters should be used to
boot Linux with 8 CPUs using the ARM Trusted Firmware.
......@@ -1254,9 +1097,6 @@ boot Linux with 8 CPUs using the ARM Trusted Firmware.
### Running on the AEMv8 Base FVP with reset to BL31 entrypoint
Please read "Notes regarding Base FVP configuration options" section above for
information about some of the options to run the software.
The following `FVP_Base_AEMv8A-AEMv8A` parameters should be used to boot Linux
with 8 CPUs using the ARM Trusted Firmware.
......@@ -1282,10 +1122,24 @@ with 8 CPUs using the ARM Trusted Firmware.
--data cluster0.cpu0="<path-to>/<kernel-binary>"@0x80080000 \
-C bp.virtioblockdevice.image_path="<path-to>/<file-system-image>"
### Running on the Cortex-A57-A53 Base FVP with reset to BL31 entrypoint
Notes:
Please read "Notes regarding Base FVP configuration options" section above for
information about some of the options to run the software.
* Since a FIP is not loaded when using BL31 as reset entrypoint, the
`--data="<path-to><bl31|bl32|bl33-binary>"@<base-address-of-binary>`
parameter is needed to load the individual bootloader images in memory.
BL32 image is only needed if BL31 has been built to expect a Secure-EL1
Payload.
* The `-C cluster<X>.cpu<Y>.RVBAR=@<base-address-of-bl31>` parameter, where
X and Y are the cluster and CPU numbers respectively, is used to set the
reset vector for each core.
* Changing the default value of `ARM_TSP_RAM_LOCATION` will also require
changing the value of
`--data="<path-to><bl32-binary>"@<base-address-of-bl32>` to the new value of
`BL32_BASE`.
### Running on the Cortex-A57-A53 Base FVP with reset to BL31 entrypoint
The following `FVP_Base_Cortex-A57x4-A53x4` model parameters should be used to
boot Linux with 8 CPUs using the ARM Trusted Firmware.
......@@ -1393,7 +1247,7 @@ The `bp.variant` parameter corresponds to the build variant field of the
detect the legacy VE memory map while configuring the GIC.
11. Running the software on Juno
10. Running the software on Juno
---------------------------------
This version of the ARM Trusted Firmware has been tested on Juno r0 and Juno r1.
......@@ -1406,17 +1260,6 @@ deliverables on Juno][Juno Instructions].
### Preparing Trusted Firmware images
The Juno platform requires a SCP_BL1 and a SCP_BL2 image to boot up. The
SCP_BL1 image contains the ROM firmware that runs on the SCP (System Control
Processor), whereas the SCP_BL2 image contains the SCP Runtime firmware. Both
images are embedded within the Juno board recovery image, these are the files
`bl0.bin` and `bl30.bin`, respectively. Please note that these filenames still
use the old terminology.
The SCP_BL2 file must be part of the FIP image. Therefore, its path must be
supplied using the `SCP_BL2` variable on the command line when building the
FIP. Please refer to the section "Building the Trusted Firmware".
After building Trusted Firmware, the files `bl1.bin` and `fip.bin` need copying
to the `SOFTWARE/` directory of the Juno SD card.
......@@ -1430,67 +1273,16 @@ configure it.
### Testing SYSTEM SUSPEND on Juno
The SYSTEM SUSPEND is a PSCI API which can be used to implement system suspend
to RAM. For more details refer to section 5.16 of [PSCI]. The [Linaro Release
Notes] point to the required SCP and motherboard firmware binaries supporting
this feature on Juno. The mainline linux kernel does not yet have support for
this feature on Juno but it is queued to be merged in v4.4. Till that becomes
available, the feature can be tested by using a custom kernel built from the
following repository:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/lpieralisi/linux.git
cd linux
git checkout firmware/psci-1.0
Configure the linux kernel:
to RAM. For more details refer to section 5.16 of [PSCI]. To test system suspend
on Juno, at the linux shell prompt, issue the following command:
export CROSS_COMPILE=<path-to-aarch64-gcc>/bin/aarch64-linux-gnu-
make ARCH=arm64 defconfig
The feature is tested conveniently by using the RTC. Enable the RTC driver in
menuconfig
make ARCH=arm64 menuconfig
The PL031 RTC driver can be enabled at the following location in menuconfig
ARM AMBA PL031 RTC
| Location:
| -> Device Drivers
| -> Real Time Clock
Build the kernel
make ARCH=arm64 Image -j8
Replace the kernel image in the `SOFTWARE/` directory of the Juno SD card with
the `Image` from `arch/arm64/boot/` of the linux directory.
Reset the board and wait for it to boot. At the shell prompt issue the
following command:
echo +10 > /sys/class/rtc/rtc1/wakealarm
echo +10 > /sys/class/rtc/rtc0/wakealarm
echo -n mem > /sys/power/state
The Juno board should suspend to RAM and then wakeup after 10 seconds due to
wakeup interrupt from RTC.
12. Changes required for booting Linux on FVP in GICv3 mode
------------------------------------------------------------
In case the TF FVP port is built with the build option
`FVP_USE_GIC_DRIVER=FVP_GICV3`, then the GICv3 hardware cannot be used in
GICv2 legacy mode. The default build of UEFI for FVP in
[latest tracking kernel][Linaro Release Notes] configures GICv3 in GICv2 legacy
mode. This can be changed by setting the build flag
`gArmTokenSpaceGuid.PcdArmGicV3WithV2Legacy` to FALSE in
`uefi/edk2/ArmPlatformPkg/ArmVExpressPkg/ArmVExpress-FVP-AArch64.dsc`.
Recompile UEFI as mentioned [here][FVP Instructions].
The GICv3 DTBs found in ARM Trusted Firmware source directory can be
used to test the GICv3 kernel on the respective FVP models.
- - - - - - - - - - - - - - - - - - - - - - - - - -
_Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved._
......@@ -1498,7 +1290,7 @@ _Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved._
[Firmware Design]: firmware-design.md
[ARM FVP website]: http://www.arm.com/fvp
[Linaro Release Notes]: https://community.arm.com/docs/DOC-10952#jive_content_id_Linaro_Release_1510
[Linaro Release Notes]: https://community.arm.com/docs/DOC-10952#jive_content_id_Linaro_Release_1602
[ARM Platforms Portal]: https://community.arm.com/groups/arm-development-platforms
[Linaro SW Instructions]: https://community.arm.com/docs/DOC-10803
[Juno Instructions]: https://community.arm.com/docs/DOC-10804
......
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