docs/system/riscv/sifive_u.rst | 33 ++++++++++++--------------------- 1 file changed, 12 insertions(+), 21 deletions(-)
Currently, the documentation outlines the process for building the
S-mode U-Boot image using `make menuconfig` and manual actions within
the menuconfig UI. However, this approach is fragile due to Kconfig
options potentially changing across different releases. For example,
CONFIG_OF_PRIOR_STAGE has been replaced by CONFIG_BOARD since v2022.01
release, and CONFIG_TEXT_BASE has been moved to the 'General setup'
menu from the 'Boot options' menu in v2024.01 release.
This update aims to make the S-mode U-Boot image build instructions
future-proof. It leverages the 'config' script provided in the U-Boot
source tree to edit the .config file, followed by a `make olddefconfig`.
Validated with U-Boot v2024.01 release.
Signed-off-by: Bin Meng <bmeng@tinylab.org>
---
docs/system/riscv/sifive_u.rst | 33 ++++++++++++---------------------
1 file changed, 12 insertions(+), 21 deletions(-)
diff --git a/docs/system/riscv/sifive_u.rst b/docs/system/riscv/sifive_u.rst
index 7b166567f9..8f55ae8e31 100644
--- a/docs/system/riscv/sifive_u.rst
+++ b/docs/system/riscv/sifive_u.rst
@@ -210,7 +210,7 @@ command line options with ``qemu-system-riscv32``.
Running U-Boot
--------------
-U-Boot mainline v2021.07 release is tested at the time of writing. To build a
+U-Boot mainline v2024.01 release is tested at the time of writing. To build a
U-Boot mainline bootloader that can be booted by the ``sifive_u`` machine, use
the sifive_unleashed_defconfig with similar commands as described above for
Linux:
@@ -325,15 +325,10 @@ configuration of U-Boot:
$ export CROSS_COMPILE=riscv64-linux-
$ make sifive_unleashed_defconfig
- $ make menuconfig
-
-then manually select the following configuration:
-
- * Device Tree Control ---> Provider of DTB for DT Control ---> Prior Stage bootloader DTB
-
-and unselect the following configuration:
-
- * Library routines ---> Allow access to binman information in the device tree
+ $ ./scripts/config --enable OF_BOARD
+ $ ./scripts/config --disable BINMAN_FDT
+ $ ./scripts/config --disable SPL
+ $ make olddefconfig
This changes U-Boot to use the QEMU generated device tree blob, and bypass
running the U-Boot SPL stage.
@@ -352,17 +347,13 @@ It's possible to create a 32-bit U-Boot S-mode image as well.
$ export CROSS_COMPILE=riscv64-linux-
$ make sifive_unleashed_defconfig
- $ make menuconfig
-
-then manually update the following configuration in U-Boot:
-
- * Device Tree Control ---> Provider of DTB for DT Control ---> Prior Stage bootloader DTB
- * RISC-V architecture ---> Base ISA ---> RV32I
- * Boot options ---> Boot images ---> Text Base ---> 0x80400000
-
-and unselect the following configuration:
-
- * Library routines ---> Allow access to binman information in the device tree
+ $ ./scripts/config --disable ARCH_RV64I
+ $ ./scripts/config --enable ARCH_RV32I
+ $ ./scripts/config --set-val TEXT_BASE 0x80400000
+ $ ./scripts/config --enable OF_BOARD
+ $ ./scripts/config --disable BINMAN_FDT
+ $ ./scripts/config --disable SPL
+ $ make olddefconfig
Use the same command line options to boot the 32-bit U-Boot S-mode image:
--
2.34.1On Thu, Jan 4, 2024 at 5:18 PM Bin Meng <bmeng@tinylab.org> wrote: > > Currently, the documentation outlines the process for building the > S-mode U-Boot image using `make menuconfig` and manual actions within > the menuconfig UI. However, this approach is fragile due to Kconfig > options potentially changing across different releases. For example, > CONFIG_OF_PRIOR_STAGE has been replaced by CONFIG_BOARD since v2022.01 > release, and CONFIG_TEXT_BASE has been moved to the 'General setup' > menu from the 'Boot options' menu in v2024.01 release. > > This update aims to make the S-mode U-Boot image build instructions > future-proof. It leverages the 'config' script provided in the U-Boot > source tree to edit the .config file, followed by a `make olddefconfig`. > > Validated with U-Boot v2024.01 release. > > Signed-off-by: Bin Meng <bmeng@tinylab.org> Thanks! Applied to riscv-to-apply.next Alistair > > --- > > docs/system/riscv/sifive_u.rst | 33 ++++++++++++--------------------- > 1 file changed, 12 insertions(+), 21 deletions(-) > > diff --git a/docs/system/riscv/sifive_u.rst b/docs/system/riscv/sifive_u.rst > index 7b166567f9..8f55ae8e31 100644 > --- a/docs/system/riscv/sifive_u.rst > +++ b/docs/system/riscv/sifive_u.rst > @@ -210,7 +210,7 @@ command line options with ``qemu-system-riscv32``. > Running U-Boot > -------------- > > -U-Boot mainline v2021.07 release is tested at the time of writing. To build a > +U-Boot mainline v2024.01 release is tested at the time of writing. To build a > U-Boot mainline bootloader that can be booted by the ``sifive_u`` machine, use > the sifive_unleashed_defconfig with similar commands as described above for > Linux: > @@ -325,15 +325,10 @@ configuration of U-Boot: > > $ export CROSS_COMPILE=riscv64-linux- > $ make sifive_unleashed_defconfig > - $ make menuconfig > - > -then manually select the following configuration: > - > - * Device Tree Control ---> Provider of DTB for DT Control ---> Prior Stage bootloader DTB > - > -and unselect the following configuration: > - > - * Library routines ---> Allow access to binman information in the device tree > + $ ./scripts/config --enable OF_BOARD > + $ ./scripts/config --disable BINMAN_FDT > + $ ./scripts/config --disable SPL > + $ make olddefconfig > > This changes U-Boot to use the QEMU generated device tree blob, and bypass > running the U-Boot SPL stage. > @@ -352,17 +347,13 @@ It's possible to create a 32-bit U-Boot S-mode image as well. > > $ export CROSS_COMPILE=riscv64-linux- > $ make sifive_unleashed_defconfig > - $ make menuconfig > - > -then manually update the following configuration in U-Boot: > - > - * Device Tree Control ---> Provider of DTB for DT Control ---> Prior Stage bootloader DTB > - * RISC-V architecture ---> Base ISA ---> RV32I > - * Boot options ---> Boot images ---> Text Base ---> 0x80400000 > - > -and unselect the following configuration: > - > - * Library routines ---> Allow access to binman information in the device tree > + $ ./scripts/config --disable ARCH_RV64I > + $ ./scripts/config --enable ARCH_RV32I > + $ ./scripts/config --set-val TEXT_BASE 0x80400000 > + $ ./scripts/config --enable OF_BOARD > + $ ./scripts/config --disable BINMAN_FDT > + $ ./scripts/config --disable SPL > + $ make olddefconfig > > Use the same command line options to boot the 32-bit U-Boot S-mode image: > > -- > 2.34.1 > >
On Thu, Jan 4, 2024 at 5:18 PM Bin Meng <bmeng@tinylab.org> wrote: > > Currently, the documentation outlines the process for building the > S-mode U-Boot image using `make menuconfig` and manual actions within > the menuconfig UI. However, this approach is fragile due to Kconfig > options potentially changing across different releases. For example, > CONFIG_OF_PRIOR_STAGE has been replaced by CONFIG_BOARD since v2022.01 > release, and CONFIG_TEXT_BASE has been moved to the 'General setup' > menu from the 'Boot options' menu in v2024.01 release. > > This update aims to make the S-mode U-Boot image build instructions > future-proof. It leverages the 'config' script provided in the U-Boot > source tree to edit the .config file, followed by a `make olddefconfig`. > > Validated with U-Boot v2024.01 release. > > Signed-off-by: Bin Meng <bmeng@tinylab.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Alistair > > --- > > docs/system/riscv/sifive_u.rst | 33 ++++++++++++--------------------- > 1 file changed, 12 insertions(+), 21 deletions(-) > > diff --git a/docs/system/riscv/sifive_u.rst b/docs/system/riscv/sifive_u.rst > index 7b166567f9..8f55ae8e31 100644 > --- a/docs/system/riscv/sifive_u.rst > +++ b/docs/system/riscv/sifive_u.rst > @@ -210,7 +210,7 @@ command line options with ``qemu-system-riscv32``. > Running U-Boot > -------------- > > -U-Boot mainline v2021.07 release is tested at the time of writing. To build a > +U-Boot mainline v2024.01 release is tested at the time of writing. To build a > U-Boot mainline bootloader that can be booted by the ``sifive_u`` machine, use > the sifive_unleashed_defconfig with similar commands as described above for > Linux: > @@ -325,15 +325,10 @@ configuration of U-Boot: > > $ export CROSS_COMPILE=riscv64-linux- > $ make sifive_unleashed_defconfig > - $ make menuconfig > - > -then manually select the following configuration: > - > - * Device Tree Control ---> Provider of DTB for DT Control ---> Prior Stage bootloader DTB > - > -and unselect the following configuration: > - > - * Library routines ---> Allow access to binman information in the device tree > + $ ./scripts/config --enable OF_BOARD > + $ ./scripts/config --disable BINMAN_FDT > + $ ./scripts/config --disable SPL > + $ make olddefconfig > > This changes U-Boot to use the QEMU generated device tree blob, and bypass > running the U-Boot SPL stage. > @@ -352,17 +347,13 @@ It's possible to create a 32-bit U-Boot S-mode image as well. > > $ export CROSS_COMPILE=riscv64-linux- > $ make sifive_unleashed_defconfig > - $ make menuconfig > - > -then manually update the following configuration in U-Boot: > - > - * Device Tree Control ---> Provider of DTB for DT Control ---> Prior Stage bootloader DTB > - * RISC-V architecture ---> Base ISA ---> RV32I > - * Boot options ---> Boot images ---> Text Base ---> 0x80400000 > - > -and unselect the following configuration: > - > - * Library routines ---> Allow access to binman information in the device tree > + $ ./scripts/config --disable ARCH_RV64I > + $ ./scripts/config --enable ARCH_RV32I > + $ ./scripts/config --set-val TEXT_BASE 0x80400000 > + $ ./scripts/config --enable OF_BOARD > + $ ./scripts/config --disable BINMAN_FDT > + $ ./scripts/config --disable SPL > + $ make olddefconfig > > Use the same command line options to boot the 32-bit U-Boot S-mode image: > > -- > 2.34.1 > >
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