boards/sim: add dropbear board configuration#19405
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xiaoxiang781216 merged 2 commits intoJul 13, 2026
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Add config to use Dropbear in sim environment. Signed-off-by: Felipe Moura <moura.fmo@gmail.com>
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simbit18
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linguini1
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acassis
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@FelipeMdeO please normalize the board config |
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Hey Alan, the issue is dependence with apache/nuttx-apps#3631. After merge the apps I will request pipeline run again. |
xiaoxiang781216
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linguini1
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@FelipeMdeO I just merged the other PR from nuttx-apps, please rebase |
Describe how to build and use the Dropbear SSH server configuration on the simulator, including host TAP network setup, user creation and the volatile /tmp host key/passwd caveat. Signed-off-by: Felipe Moura <moura.fmo@gmail.com>
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Summary
This PR adds a
sim:dropbearboard configuration. Using this environment speedup development.Depends on apache/nuttx-apps#3631:
NETUTILS_DROPBEARcurrently requires a hardware TRNG (ARCH_HAVE_RNG+DEV_RANDOM), which the simulator cannot satisfy — without that change the option is silently dropped at configure time. The logs below were produced with that PR applied.Impact
dropbearsubsection inDocumentation/platforms/sim/sim/boards/sim/index.rst.Testing
Host: Ubuntu 24.04 (aarch64), GCC 13.3.0
Target: NuttX simulator,
sim:dropbear(with apache/nuttx-apps#3631applied):
Boot, with Dropbear started automatically by NSH and the preset address,
then create a user:
Connect from the host into an interactive NSH session over SSH: