HelenOS sources
machine_early_uart_output 52 kernel/arch/arm64/include/arch/machine_func.h void (*machine_early_uart_output)(char32_t);
machine_early_uart_output 63 kernel/arch/arm64/include/arch/machine_func.h extern void machine_early_uart_output(char32_t);
machine_early_uart_output 264 kernel/arch/arm64/src/arm64.c machine_early_uart_output('\r');
machine_early_uart_output 266 kernel/arch/arm64/src/arm64.c machine_early_uart_output(c);
machine_early_uart_output 106 kernel/arch/arm64/src/machine_func.c if (machine_ops->machine_early_uart_output != NULL)
machine_early_uart_output 107 kernel/arch/arm64/src/machine_func.c machine_ops->machine_early_uart_output(c);
HelenOS homepage, sources at GitHub