** Description changed:
[ Impact ]
The StarFive VisionFive 2 Lite is a new RISC-V RVA20 board that we can
support with Ubuntu 24.04 (the release we are using for ongoing support
of RVA20, given that questing onwards will be restricted to RVA23).
The board features a JH7710S SoC which only differs from the JH7710 by
the allowable CPU frequency and temperature range. To make OpenSBI
recognize the board the compatibility string of the new SoC needs to be
added to OpenSBI 1.7:
diff --git a/platform/generic/starfive/jh7110.c
b/platform/generic/starfive/jh7110.c
index 4163e416..c1328437 100644
--- a/platform/generic/starfive/jh7110.c
+++ b/platform/generic/starfive/jh7110.c
@@ -322,6 +322,7 @@ static int starfive_jh7110_platform_init(const void *fdt,
int nodeoff,
static const struct fdt_match starfive_jh7110_match[] = {
{ .compatible = "starfive,jh7110" },
+ { .compatible = "starfive,jh7110s" },
{ },
};
This change is already present in 1.7-1 in resolute. We will execute the
change in Questing, Plucky, Noble to keep the code the same but as the
new board will not be supported in Questing no feature freeze exception
is needed.
[ Test Plan ]
For each backported $series (questing, plucky, noble), for each
potentially affected $board supported by $series (see
https://ubuntu.com/download/risc-v/canonical-built for definitions):
* Flash image for $board to appropriate storage (see board specific
instructions [2] if required).
- * Boot image on $board.
- * Upgrade opensbi to version in -proposed: sudo apt install $series-proposed
opensbi
- * Re-flash boot firmware (if required; instructions may vary depending on
$board)
- * Check that SBI sysreset is the only sysreset driver in U-Boot.
+ * Build U-Boot for the board using the updated OpenSBI with SBI sysreset
being the only sysreset driver
+ * Update U-boot
* Test that the 'reset' command reboots the board.
[1]: https://ubuntu.com/download/risc-v/canonical-built
[2]: https://canonical-ubuntu-boards.readthedocs-
hosted.com/en/latest/how-to/
[ Where problems could occur ]
This backport potentially upgrades a part of the bootloader on all
RISC-V boards supported, hence the test plan ensures that (re)boot is
not affected on all such boards. Note that only RISC-V boards are
potentially affected so testing is limited to this architecture.
One potential hole in testing is that questing (25.10) cannot be tested
on actual hardware. We require RVA23 in questing, and no RVA23 hardware
yet exists, so the only testing that can be done is in QEMU. However,
this also means no actual hardware can be regressed by this change,
hence the risk of regression in questing at least is minimal.
[ Other Info ]
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https://bugs.launchpad.net/bugs/2121785
Title:
[SRU] Support StarFive VisionFive 2 Lite
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