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QEMU's b-l475e-iot01a machine models the STM32L4x5 core peripherals, but not the QUADSPI controller or the on-board MX25R6435F flash. The nsh configuration therefore panics during board bring-up, inside stm32_qspi_initialize() -> mx25rxx_initialize() -> qspi_command(), before the console has produced any output. Add a qemu configuration that is nsh without CONFIG_B_L475E_IOT01A_MTD_FLASH and the QSPI/MTD/SMARTFS chain that symbol selects. It boots to an NSH prompt on USART1 under: qemu-system-arm -M b-l475e-iot01a -nographic -kernel nuttx Document the new configuration, including the fact that QEMU's STM32L4x5 USART model never calls qemu_chr_fe_accept_input() after the guest reads RDR. Console input consequently stalls after the first byte or two when a line is pasted or piped in, although typing at human speed works. Assisted-by: Claude Code:claude-opus-5 Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com> |
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