This patch adds inter-processor interrupt support using K230 mailbox
device to improve the RPMsg efficiency. The polling logic has been
dropped.
Major changes:
- in arch/risc-v/include/k230:
- irq.h add IRQ for IPI devices
- in arch/risc-v/src/k230:
- Kconfig add IPI related config, increase polling delay
- Make.defs add k230_ipi.c to CHIP_SRCS
- k230_hart.c fix typo, add notes of zero MISA reading w/ NUTTSBI
- k230_irq.c use K230_PLIC_IRQS as ext IRQ limit to support IPI
- k230_rptun.c use IPI instead of polling
- in boards/risc-v/k230/canmv230/configs
- master enable IPI support
- remote enable IPI, TMPFS, RPMSGFS etc
New additions:
- in arch/risc-v/src/k230:
- k230_ipi.h add K230 IPI related defintions
- k230_ipi.c add K230 IPI driver
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
K230 chip has two T-Head C908 RiscV cores, previously we run NuttX
on either little or big cores. This patch runs NuttX on both cores
with OpenAMP support via the RPTUN driver.
New additions:
- in arch/risc-v/src/k230
- k230_rptun.c K230 RPTUN driver
- k230_rptun.h K230 RPTUN driver header file
- in baords/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 information.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
