62c358946d
Ox64 BL808 crashes with a Page Fault when we run `getprime` then `hello`. This is caused by the T-Head C906 MMU incorrectly accessing the MMU Page Tables of the Previous Process (`getprime`) while starting the New Process (`hello`). To fix the problem, this PR flushes the MMU Cache whenever we point the MMU SATP Register to the New Page Tables. We execute 2 RISC-V Instructions that are specific to T-Head C906: - DCACHE.IALL: Invalidate all Page Table Entries in the D-Cache - SYNC.S: Ensure that all Cache Operations are completed This is derived from the T-Head Errata for Linux Kernel. More details here: https://lupyuen.github.io/articles/mmu#appendix-flush-the-mmu-cache-for-t-head-c906 Modified Files: - `arch/risc-v/src/common/riscv_mmu.h`: If needed, `mmu_write_satp()` calls `mmu_flush_cache()` (weak function) to flush the MMU Cache. (Like for T-Head C906) - `arch/risc-v/src/bl808/bl808_mm_init.c`: Flush the MMU Cache for T-Head C906. Extend `mmuflags` from 32-bit to 64-bit to be consistent with `mmu_ln_setentry()`. - `boards/risc-v/bl808/ox64/configs/nsh/defconfig`: Enable `ostest` in the Build Config. Update `CONFIG_BOARD_LOOPSPERMSEC` according to `calib_udelay`.
86 lines
2.3 KiB
Plaintext
86 lines
2.3 KiB
Plaintext
#
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# This file is autogenerated: PLEASE DO NOT EDIT IT.
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#
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# You can use "make menuconfig" to make any modifications to the installed .config file.
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# You can then do "make savedefconfig" to generate a new defconfig file that includes your
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# modifications.
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#
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# CONFIG_DISABLE_OS_API is not set
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# CONFIG_NSH_DISABLE_LOSMART is not set
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# CONFIG_STANDARD_SERIAL is not set
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CONFIG_ARCH="risc-v"
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CONFIG_ARCH_ADDRENV=y
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CONFIG_ARCH_BOARD="ox64"
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CONFIG_ARCH_BOARD_BL808_OX64=y
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CONFIG_ARCH_CHIP="bl808"
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CONFIG_ARCH_CHIP_BL808=y
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CONFIG_ARCH_DATA_NPAGES=128
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CONFIG_ARCH_DATA_VBASE=0x80100000
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CONFIG_ARCH_HEAP_NPAGES=128
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CONFIG_ARCH_HEAP_VBASE=0x80200000
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CONFIG_ARCH_INTERRUPTSTACK=2048
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CONFIG_ARCH_KERNEL_STACKSIZE=3072
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CONFIG_ARCH_PGPOOL_MAPPING=y
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CONFIG_ARCH_PGPOOL_PBASE=0x50600000
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CONFIG_ARCH_PGPOOL_SIZE=4194304
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CONFIG_ARCH_PGPOOL_VBASE=0x50600000
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CONFIG_ARCH_RISCV=y
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_ARCH_TEXT_NPAGES=128
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CONFIG_ARCH_TEXT_VBASE=0x80000000
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CONFIG_ARCH_USE_MMU=y
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CONFIG_ARCH_USE_MPU=y
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CONFIG_ARCH_USE_S_MODE=y
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CONFIG_BL808_UART3=y
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CONFIG_BOARDCTL_ROMDISK=y
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CONFIG_BOARD_LATE_INITIALIZE=y
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CONFIG_BOARD_LOOPSPERMSEC=1120
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CONFIG_BUILD_KERNEL=y
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CONFIG_DEBUG_ASSERTIONS=y
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CONFIG_DEBUG_ASSERTIONS_EXPRESSION=y
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CONFIG_DEBUG_FEATURES=y
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CONFIG_DEBUG_FULLOPT=y
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CONFIG_DEBUG_SYMBOLS=y
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CONFIG_DEV_ZERO=y
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CONFIG_ELF=y
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CONFIG_EXAMPLES_HELLO=m
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CONFIG_FS_PROCFS=y
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CONFIG_FS_ROMFS=y
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CONFIG_IDLETHREAD_STACKSIZE=3072
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CONFIG_INIT_FILEPATH="/system/bin/init"
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CONFIG_INIT_MOUNT=y
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CONFIG_INIT_MOUNT_FLAGS=0x1
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CONFIG_INIT_MOUNT_TARGET="/system/bin"
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CONFIG_INIT_STACKSIZE=3072
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CONFIG_INTELHEX_BINARY=y
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CONFIG_LIBC_ENVPATH=y
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CONFIG_LIBC_EXECFUNCS=y
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CONFIG_LIBC_PERROR_STDOUT=y
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CONFIG_LIBC_STRERROR=y
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CONFIG_MEMSET_64BIT=y
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CONFIG_MEMSET_OPTSPEED=y
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CONFIG_MM_PGALLOC=y
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CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
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CONFIG_NSH_ARCHINIT=y
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CONFIG_NSH_FILEIOSIZE=512
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CONFIG_NSH_FILE_APPS=y
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CONFIG_NSH_READLINE=y
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CONFIG_PATH_INITIAL="/system/bin"
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CONFIG_RAM_SIZE=1048576
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CONFIG_RAM_START=0x50200000
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CONFIG_READLINE_CMD_HISTORY=y
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CONFIG_RR_INTERVAL=200
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CONFIG_SCHED_LPWORK=y
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CONFIG_SCHED_WAITPID=y
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CONFIG_STACK_COLORATION=y
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CONFIG_START_MONTH=12
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CONFIG_START_YEAR=2021
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CONFIG_SYMTAB_ORDEREDBYNAME=y
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CONFIG_SYSTEM_NSH=y
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CONFIG_SYSTEM_NSH_PROGNAME="init"
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CONFIG_TESTING_GETPRIME=y
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CONFIG_TESTING_OSTEST=y
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CONFIG_UART3_BAUD=2000000
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CONFIG_UART3_SERIAL_CONSOLE=y
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CONFIG_USEC_PER_TICK=1000
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