| @node Xtensa System emulator |
| @section Xtensa System emulator |
| |
| Two executables cover simulation of both Xtensa endian options, |
| @file{qemu-system-xtensa} and @file{qemu-system-xtensaeb}. |
| Two different machine types are emulated: |
| |
| @itemize @minus |
| @item |
| Xtensa emulator pseudo board "sim" |
| @item |
| Avnet LX60/LX110/LX200 board |
| @end itemize |
| |
| The sim pseudo board emulation provides an environment similar |
| to one provided by the proprietary Tensilica ISS. |
| It supports: |
| |
| @itemize @minus |
| @item |
| A range of Xtensa CPUs, default is the DC232B |
| @item |
| Console and filesystem access via semihosting calls |
| @end itemize |
| |
| The Avnet LX60/LX110/LX200 emulation supports: |
| |
| @itemize @minus |
| @item |
| A range of Xtensa CPUs, default is the DC232B |
| @item |
| 16550 UART |
| @item |
| OpenCores 10/100 Mbps Ethernet MAC |
| @end itemize |
| |
| @c man begin OPTIONS |
| |
| The following options are specific to the Xtensa emulation: |
| |
| @table @option |
| |
| @item -semihosting |
| Enable semihosting syscall emulation. |
| |
| Xtensa semihosting provides basic file IO calls, such as open/read/write/seek/select. |
| Tensilica baremetal libc for ISS and linux platform "sim" use this interface. |
| |
| Note that this allows guest direct access to the host filesystem, |
| so should only be used with trusted guest OS. |
| |
| @end table |
| |
| @c man end |
| |
