risc-v/k230: initial Asymmetric Multi-Processing support

[yf13]

Summary

K230 chip has two T-Head C908 RiscV cores, previously we run NuttX either on little or big cores. This patch runs NuttX on both cores with OpenAMP support via the RPTUN driver and the Svpbmt extension of T-Head C908.

New additions:

• in arch/risc-v/src/k230

  • k230_rptun.c K230 RPTUN driver
  • k230_rptun.h K230 RPTUN driver header file

• in boards/risc-v/k230/canmv230

  • configs/master Build config for master node
  • configs/remote Build config for remote node
  • scripts/ld-rptun.script Build script for RPTUN

Major changes:

• arch/risc-v/Kconfig Select NUTTSBI_LATE_INIT upon NUTTSBI
• in arch/risc-v/include
  • k230/irq.h Add UART3 IRQ defs
• in arch/risc-v/src/k230
  • Kconfig Add RPTUN related config items
  • Make.defs Add k230-rptun.c to sources
  • hardware/k230_memorymap.h Add K230 device and CSR defs
  • k230_hart.c Add hart ctrl for RPTUN
  • k230_hart.h Add hart ctrl for RPTUN
  • k230_mm_init.c Add Svpmbt to support RPTUN
  • k230_start.c Revised to support RPMsg UART
• in boards/risc-v/k230/canmv230
  • scripts/Make.defs Add RPTUN script selection
  • src/canmv_init.c Add RPTUN and RPMsg_UART initialization
• in Documentation/platforms/risc-v/k230/boards/canmv230/
  • index.rst Add AMP usage info.

Impact

CanMV230 device

Testing

Checked with CanMV230 device:

## Starting application at 0x08000000 ...
ABCk230_rptun_init: 
cleared 224 @ 0x80200000
rp_get_resource: shmem:0x80200000, dev:0x8082360
rp_set_callback: 0x801dc5a, arg:0x808edb0

NuttShell (NSH) NuttX-12.4.0-RC0
master> cu

NuttShell (NSH) NuttX-12.4.0-RC0
remote> df -h
  Filesystem      Size      Used  Available Mounted on
  procfs            0B        0B         0B /proc
  romfs            72K       72K         0B /system/bin
remote> ~master> 
master> df -h
  Filesystem      Size      Used  Available Mounted on
  procfs            0B        0B         0B /proc
  romfs           171K      171K         0B /system/bin
master>

Thanks

• to @xiaoxiang781216 and @CV-Bowen for sharing RPTUN information
• to @lupyuen for sharing experiences with T-Head MMU format

[acassis]

@yf13 suggestion: please extent this Testing and create an entry at https://nuttx.apache.org/docs/latest/platforms/risc-v/k230/boards/canmv230/index.html explain how to use it. So more people could test it easily and also it will avoid another hidden feature.

[yf13]

@acassis thanks for reminding, the doc has been updated and passed documentation checks.
However, it seems that linux/sim-01 is broken due to "lighting-app'? Please let me know if there is anything I can do.

[xiaoxiang781216]

@acassis thanks for reminding, the doc has been updated and passed documentation checks. However, it seems that linux/sim-01 is broken due to "lighting-app'? Please let me know if there is anything I can do.

@zhhyu7 look like matter ci break.

[xiaoxiang781216]

@yf13 please reference this patch #11409.

[yf13]

@xiaoxiang781216 and @acassis it seems that Mac(sim-01) is blocking CI checks now:

 Error: /Applications/Xcode_15.0.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/mach/vm_page_size.h:59:44: error: expected ';' after top level declarator