Previously we need turn off the PMP locks in K230 vendor u-boot to use
NuttX, this complicates the setup process. This patch supports running
NuttX with original vendor u-boot so that to reduce setup complexity.
It also enables empty NSH prompt string in AMP master config as the apps
side support is ready.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
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>
Weak function sometimes can't have strong implementation linked.
This patch uses NUTTSBI_LATE_INIT config and normal function instead
to avoid those issues.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
Previously k230 kernel build needs OpenSBI wrapping for use on
target, thus leading to larger program and memory overheads.
This patch adds alternative small overhead kernel build support.
Changes:
- in arch/risc-v/src/k230:
- k230_head.S entrance renamed for sake of NUTTSBI
- k230_irq.c add M-mode handling for NUTTSBI case
- k230_mm_init.c add L3 table for smaller RAM case
- hardware/k230_plic.h add PLIC_CTRL definition
- Make.defs use CHIP_ASRCS to fix entrance selection
- in boards/risc-v/canmv230/scripts:
- Make.defs add support for NUTTSBI case
Additions:
- in boards/riscv/canmv230/:
- scripts/ld-nuttsbi.script link script for NUTTSBI case
- configs/nsbi/defconfig config for NUTTSBI case
The artifact nuttx.bin from this configuration can be used directly
on target as OpenSBI wrapping is not needed.
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
fix typo
Previously apps in kernel build are partially linked, thus are
big and inefficient. This enables full link for kernel mode apps
to reduce size and speed up loading.
Changes:
- arch/risc-v/Kconfig select HAVE_ELF_EXECUTABLE for K230
- boards/../scripts/Make.defs adjust LDELFLAGS
- boards/../knsh/defconfig enable BINFMT_ELF_EXECUTABLE
Additions:
- boards/../scripts/gnu-elf.ld apps linker script
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
Changes:
- Documentation/platforms/risc-v/k230 revised for both modes
- arch/risc-v/include/k230/irq.h add S-mode IRQs
- under arch/risc-v/src/k230 folder:
- Make.defs drop use of k230_exception_m.S
- hardware/k230_clint.h add S-mode defs, revised freq
- k230_head.S unified flat/kernel mode support
- k230_irq.c add S-mode support with debug dump
- k230_mm_init.c revised for K230 S-mode
- k230_start.c revised for flat/s-mode,
- arch/risc-v/src/k230/k230_timerisr.c unified flat/s-mode support.
- under boards/risc-v/k230/canmv230 folder:
- configs/nsh/defconfig fix RAM size
- include/board_memorymap.h cleanup for S-mode
- src/.gitignore ignore romfs_boot.c
- src/Makefile add romfs support
Renames:
- under boards/risc-v/k230/canmv230/src/ folder:
- canmv_init.c from k230_appinit.c making room for more k230 devices
Dropped:
- under arch/risc-v/src/k230/
- k230_exception_m.S as hybrid mode not ready yet.
New files in boards/riscv/k230/canmv230:
- configs/knsh/defconfig S-mode config
- scripts/ld-kernel.script S-mode linker script
- src/romfs.h User space ROMFS defs needed in S-mode
- src/romfs_stub.c Stub ROMFS image
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
The code is mainly derived from the NuttX qemu-rv/rv-virt codebase.
Major changes:
- boards/Kconfig: add new BOARD_K230_CANMV
- arch/risc-v/Kconfig: add new CHIP_K230 chip and ARCH_RV_MMIO_BITS
- arch/risc-v/src/common/riscv_mtimer.c: use ARCH_RV_MMIO_BITS to
select MMIO access width
New additions:
- arch/risc-v/include/k230/: k230 SoC definitions
- arch/risc-v/src/k230/: k230 SoC sources
- boards/risc-v/k230/canmv230/: CanMV-K230 board sources and configs
- Documentation/platforms/risc-v/k230/: simple doc
Note that only FLAT build works for canmv230 now.
This PR has changes in RiscV common layer thus may affect other RiscV ports
It changes the mtime/mtimecmp access control from using config ARCH_RV64 to
newly intorduced config ARCH_RV_MMIO_BITS.
Original design uses ARCH_RV64 to select 64bit MMIO in riscv_mtimer.c, this
can't cope with the situation with K230 --- it has ARCH_RV64 but only can do
32bit MMIO. So a new ARCH_RV_MMIO_BITS config has been introduced. Its value
depicts the MMIO width in bits. The MMIO_BITS defaults to 32/64 for RV32/
RV64 respectively. This allows the macro to replace current use of ARCH_RV64
in riscv_mtimer.c.
The new MMIO_BITS config is a derived one, and for RiscV chips with
equal CPU and MMIO widths there is no need to explicitly set it as the
default rule will do that. Only chips with different CPU and MMIO widths
need set it in Kconfig.
So by design this change should be safe but RiscV ports should be checked.
"ostest" verification has been done for:
- canmv230/nsh
- rv-vivt/nsh
- rv-virt/nsh64
configuration generation and manual check of derived RV_MMIO_BITS has been
done for:
- star64/nsh
- arty_a7/nsh
- bl602evb/nsh
Signed-off-by: Yanfeng Liu <yfliu2008@qq.com>
