原文链接：https://harmonyos.51cto.com/posts/841
给大家分享瑞芯微三款A7芯片liteos_a内核补丁，打上附件补丁编译可进入鸿蒙内核。
补丁主要涉及四个目录：
构建/精简版/
内核/ liteos_a /
驱动程序/ hdf / lite /
供应商/ rockchip /
1.构建/精简版/
该目录修改添加新的产品的编译支持，修改和添加以下文件文件：
- project build/lite/
- -m build.py
- -- config/boards/rk3126c.gni
- -- config/boards/rk3288.gni
- -- config/boards/rv1126.gni
- -m gen_rootfs.py
- -- product/rk3126c.json
- -- product/rk3288.json
- -- product/rv1126.json
修改build.py和gen_rootfs.py两处修改为支持build.py rk3126c编译命令和生成vfat格式的rootfs.img。
- diff --git a/build.py b/build.py
- index 003e7e4..76386ce 100755
- --- a/build.py
- +++ b/build.py
- [url=home.php?mod=space&uid=1999721]@@[/url] -26,6 +26,9 @@ import os
- def usage():
- msg = " python build.py ipcamera_hi3516dv300 "
- "python build.py ipcamera_hi3518ev300 "
- + "python build.py rv1126 "
- + "python build.py rk3126c "
- + "python build.py rk3288 "
- "python build.py wifiiot"
- " Quickstart: [url]https://device.hARMonyos.com/cn/docs/start/[/url]"
- "introduce/oem_start_guide-0000001054913231"
- diff --git a/gen_rootfs.py b/gen_rootfs.py
- index ff8d49e..6227435 100755
- --- a/gen_rootfs.py
- +++ b/gen_rootfs.py
- @@ -312,10 +312,7 @@ def main():
- return -1
- if args.board:
- - if args.board == 'hi3516dv300':
- fstype = 'vfat'
- - else:
- - fstype = 'jffs2'
- else:
- return -1
build / lite / product / rk3126c.json使用指定的编译rk3126c固件包含某些模块，此处删除了基础相关仓库，保留hdf驱动以及liteos_a内核模块。
- {
- "ohos_version": "OpenHarmony 1.0",
- "board": "rk3126c",
- "kernel": "liteos_a",
- "compiler": "clang",
- "subsystem": [
- {
- "name": "kernel",
- "component": [
- { "name": "liteos_a", "dir": "//kernel/liteos_a:kernel", "features":[] }
- ]
- },
- {
- "name": "hdf",
- "component": [
- { "name": "posix", "dir": "//drivers/hdf/lite/posix:hdf_posix", "features":[] },
- { "name": "manager", "dir": "//drivers/hdf/lite/manager:hdf_manager", "features":[] }
- ]
- },
- {
- "name": "utils",
- "component": [
- { "name": "kv_store", "dir": "//utils/native/lite/kv_store:kv_store", "features":[] }
- ]
- }
- ],
- "vendor_adapter_dir": "//vendor/hisi/hi35xx/hi3518ev300/hi3518ev300_adapter",
- "third_party_dir": "//third_party",
- "ohos_product_type":"",
- "ohos_manufacture":"",
- "ohos_brand":"",
- "ohos_market_name":"",
- "ohos_product_series":"",
- "ohos_product_model":"",
- "ohos_software_model":"",
- "ohos_hardware_model":"",
- "ohos_hardware_profile":"",
- "ohos_serial":"",
- "ohos_bootloader_version":"",
- "ohos_secure_patch_level":"",
- "ohos_abi_list":""
- }
build / lite / config / boards / rk3126c.gni指定芯片对应指令集rk3126c对应cortex-a7
- board_arch = "armv7-a"
- board_cpu = "cortex-a7"
2.内核/ liteos_a
主要添加芯片对应的内核配置文件如：rk3126c_clang_release.config，添加修改文件如下：
- project kernel/liteos_a/
- -m Kconfig
- -m Makefile
- -m arch/arm/arm/src/startup/reset_vector_up.S
- -m fs/vfs/vfs_cmd/vfs_shellcmd.c
- -m kernel/base/include/los_vm_zone.h
- -m kernel/base/misc/los_stackinfo.c
- -m kernel/common/los_config.c
- -m kernel/common/los_config.h
- -m kernel/common/los_exc_interaction.c
- -m kernel/common/los_excinfo.c
- -m kernel/common/los_rootfs.c
- -m kernel/extended/trace/los_trace.c
- -m platform/Kconfig
- -m platform/Makefile
- -m platform/bsp.mk
- -m shell/full/src/base/shcmd.c
- -m shell/full/src/base/shmsg.c
- -m shell/full/src/base/show.c
- -m shell/full/src/cmds/dmesg.c
- -- tools/build/config/debug/rv1126.config
- -- tools/build/config/debug/rv1126_clang.config
- -- tools/build/config/rk3126c_clang_release.config
- -- tools/build/config/rk3288_clang_release.config
- -- tools/build/config/rv1126_clang_release.config
- -m tools/build/mk/los_config.mk
添加编译内核的配置文件tools / build / config / rk3126c_clang_release.config，添加宏LOSCFG_PLATFORM_RK3126C = y和LOSCFG_PLATFORM =“ rk3126c”支持区分新的芯片编译
内核/ liteos_a / Kconfig
添加LOSCFG_PLATFORM_RK3126C宏判断，指定rk3126c支持“ clang-llvm”编译器，并注释屏蔽海思芯片相关的Kconfig
diff --git a/Kconfig b/Kconfig
- index 522800b..4e0f99f 100755
- --- a/Kconfig
- +++ b/Kconfig
- @@ -42,11 +42,11 @@ choice
-
- config COMPILER_HIMIX_32
- bool "arm-linux-ohoseabi"
- - depends on PLATFORM_HI3518EV300 || PLATFORM_HI3516DV300
- + depends on PLATFORM_HI3518EV300 || PLATFORM_HI3516DV300 || PLATFORM_RV1126 || PLATFORM_RK3126C || PLATFORM_RK3288
-
- config COMPILER_CLANG_LLVM
- bool "clang-llvm"
- - depends on PLATFORM_HI3518EV300 || PLATFORM_HI3516DV300
- + depends on PLATFORM_HI3518EV300 || PLATFORM_HI3516DV300 || PLATFORM_RV1126 || PLATFORM_RK3126C || PLATFORM_RK3288
-
- endchoice
- endmenu
- @@ -274,7 +274,7 @@ config VM_OVERLAP_CHECK
- config NULL_ADDRESS_PROTECT
- bool "Enable NULL Address protect"
- default n
- - depends on (PLATFORM_HI3518EV200 || PLATFORM_HI3516CV300 || PLATFORM_HI3518EV300 || PLATFORM_HI3516DV300) && DEBUG_VERSION
- + depends on (PLATFORM_HI3518EV200 || PLATFORM_HI3516CV300 || PLATFORM_HI3518EV300 || PLATFORM_HI3516DV300 || PLATFORM_RV1126) && DEBUG_VERSION
- help
- Answer Y to set mem address 0~1M prohibit to access, read or write will trigger exception.
-
- @@ -284,7 +284,7 @@ choice
- help
- Enable simple uart (without vfs) only for litekernel.
- Enable general uart (with vfs) for full code.
- -source "../../vendor/hisi/hi35xx/platform/uart/Kconfig"
- +##source "../../vendor/hisi/hi35xx/platform/uart/Kconfig"
- config PLATFORM_UART_WITHOUT_VFS
- bool "Simple Uart"
- config PLATFORM_NO_UART
- @@ -301,7 +301,7 @@ config DRIVERS
- help
- Answer Y to enable LiteOS support driver.
-
- -source "../../vendor/hisi/hi35xx/platform/hiedmac/Kconfig"
- +#source "../../vendor/hisi/hi35xx/platform/hiedmac/Kconfig"
- source "../../kernel/liteos_a/bsd/dev/u***/Kconfig"
- source "../../drivers/hdf/lite/Kconfig"
-
- @@ -319,11 +319,11 @@ choice
- help
- Enable higmac for hi3516a hi3519 hi3559a_cortex-a53_aarch64.
- Enable hieth-sf for hi3516cv300 hi3516ev200 and hi3518ev200.
- -source "../../vendor/hisi/hi35xx/platform/hieth-sf/Kconfig"
- +#source "../../vendor/hisi/hi35xx/platform/hieth-sf/Kconfig"
- endchoice
-
- source "../../drivers/liteos/mem/Kconfig"
- -source "../../vendor/hisi/hi35xx/platform/mmc/Kconfig"
- +#source "../../vendor/hisi/hi35xx/platform/mmc/Kconfig"
-
-
- config DRIVERS_MTD
- @@ -333,7 +333,7 @@ config DRIVERS_MTD
- help
- Answer Y to enable LiteOS support jffs2 multipartion.
-
- -source "../../vendor/hisi/hi35xx/platform/mtd/spi_nor/Kconfig"
- +#source "../../vendor/hisi/hi35xx/platform/mtd/spi_nor/Kconfig"
- source "../../drivers/liteos/random/Kconfig"
- source "../../drivers/liteos/tzdriver/Kconfig"
- source "../../drivers/liteos/video/Kconfig"
kernel / liteos_a / Makefile修改Makefile，指定FSTYPE = vfat执行make rootfs时编译编译vfat格式root.img，指定rk3126c和其他芯片所包含的BOARD_INCLUDE_DIR目录
- --- a/Makefile
- +++ b/Makefile
- @@ -59,6 +59,16 @@ endif
- ifeq ($(LOSCFG_PLATFORM_HI3516DV300), y)
- FSTYPE = vfat
- endif
- +ifeq ($(LOSCFG_PLATFORM_RV1126), y)
- +FSTYPE = vfat
- +endif
- +ifeq ($(LOSCFG_PLATFORM_RK3126C), y)
- +FSTYPE = vfat
- +endif
- +ifeq ($(LOSCFG_PLATFORM_RK3288), y)
- +FSTYPE = vfat
- +endif
- +
- ROOTFS_DIR = $(OUT)/rootfs
- ROOTFS_ZIP = $(OUT)/rootfs.zip
- VERSION =
- @@ -101,9 +111,19 @@ endif
- ##### make lib #####
- $(__LIBS): $(OUT) $(CXX_INCLUDE)
- +ifeq ($(LOSCFG_PLATFORM_RV1126), y)
- +BOARD_INCLUDE_DIR := $(LITEOSTOPDIR)/../../vendor/rockchip/rv1126/board
- +else ifeq ($(LOSCFG_PLATFORM_RK3126C), y)
- +BOARD_INCLUDE_DIR := $(LITEOSTOPDIR)/../../vendor/rockchip/rk3126c/board
- +else ifeq ($(LOSCFG_PLATFORM_RK3288), y)
- +BOARD_INCLUDE_DIR := $(LITEOSTOPDIR)/../../vendor/rockchip/rk3288/board
- +else
- +BOARD_INCLUDE_DIR := $(LITEOSTOPDIR)/../../vendor/hisi/hi35xx/$(LITEOS_PLATFORM)/config/board
- +endif
- +
- $(OUT): $(LITEOS_MENUCONFIG_H)
- $(HIDE)mkdir -p $(OUT)/lib
- - $(HIDE)$(CC) -I$(LITEOS_PLATFORM_BASE)/include -I$(LITEOSTOPDIR)/../../vendor/hisi/hi35xx/$(LITEOS_PLATFORM)/config/board
- + $(HIDE)$(CC) -I$(LITEOS_PLATFORM_BASE)/include -I$(BOARD_INCLUDE_DIR)
- -E $(LITEOS_PLATFORM_BASE)/board.ld.S
- -o $(LITEOS_PLATFORM_BASE)/board.ld -P
platform目录修改：关联板平台添加rk3126c所需要编译的定时器，以及包括目录
- diff --git a/platform/Kconfig b/platform/Kconfig
- index 2b34a8d..3deefbc 100755
- --- a/platform/Kconfig
- +++ b/platform/Kconfig
- @@ -2,6 +2,9 @@ config PLATFORM
- string
- default "hi3516dv300" if PLATFORM_HI3516DV300
- default "hi3518ev300" if PLATFORM_HI3518EV300
- + default "rv1126" if PLATFORM_RV1126
- + default "rk3126c" if PLATFORM_RK3126C
- + default "rk3288" if PLATFORM_RK3288
-
- choice
- prompt "Board"
- @@ -19,6 +22,18 @@ config PLATFORM_HI3518EV300
- bool "hi3518ev300"
- select ARCH_CORTEX_A7
-
- +config PLATFORM_RV1126
- + bool "rv1126"
- + select ARCH_CORTEX_A7
- +
- +config PLATFORM_RK3126C
- + bool "rk3126c"
- + select ARCH_CORTEX_A7
- +
- +config PLATFORM_RK3288
- + bool "rk3288"
- + select ARCH_CORTEX_A7
- +
- endchoice
-
- config TEE_ENABLE
- diff --git a/platform/Makefile b/platform/Makefile
- index e7ced6b..5101bfc 100755
- --- a/platform/Makefile
- +++ b/platform/Makefile
- @@ -40,7 +40,7 @@ LOCAL_SRCS = $(wildcard $(HWI_SRC)/*.c)
- LOCAL_INCLUDE += -I $(LITEOSTOPDIR)/compat/posix/src
- -I $(LITEOSTOPDIR)/bsd/dev/random
-
- -ifeq ($(findstring y, $(LOSCFG_PLATFORM_HI3518EV300)$(LOSCFG_PLATFORM_HI3516DV300)), y)
- +ifeq ($(findstring y, $(LOSCFG_PLATFORM_HI3518EV300)$(LOSCFG_PLATFORM_HI3516DV300)$(LOSCFG_PLATFORM_RV1126)$(LOSCFG_PLATFORM_RK3126C))$(LOSCFG_PLATFORM_RK3288), y)
- LOCAL_SRCS += $(wildcard ../kernel/common/*.c)
- LOCAL_SRCS := $(filter-out ../kernel/common/los_rootfs.c, $(LOCAL_SRCS))
- ifneq ($(LOSCFG_FS_VFS), y)
- diff --git a/platform/bsp.mk b/platform/bsp.mk
- index 7714dbf..07f71ba 100755
- --- a/platform/bsp.mk
- +++ b/platform/bsp.mk
- @@ -55,7 +55,15 @@ else ifeq ($(LOSCFG_PLATFORM_HI3518EV300), y)
- UART_TYPE := amba_pl011
- USB_TYPE := u***3.0_hi3518ev300
- LITEOS_CMACRO_TEST += -DTEST3518EV300
- -
- +else ifeq ($(LOSCFG_PLATFORM_RV1126), y)
- + HWI_TYPE := arm/interrupt/gic
- + TIMER_TYPE := arm/timer/arm_generic
- +else ifeq ($(LOSCFG_PLATFORM_RK3126C), y)
- + HWI_TYPE := arm/interrupt/gic
- + TIMER_TYPE := arm/timer/arm_generic
- +else ifeq ($(LOSCFG_PLATFORM_RK3288), y)
- + HWI_TYPE := arm/interrupt/gic
- + TIMER_TYPE := arm/timer/arm_generic
- endif
-
- HWI_SRC := hw/$(HWI_TYPE)
- @@ -80,7 +88,14 @@ PLATFORM_INCLUDE := -I $(LITEOSTOPDIR)/../../vendor/hisi/hi35xx/$(LITEOS_PLATFOR
-
- ifeq ($(findstring y, $(LOSCFG_PLATFORM_HI3518EV300)$(LOSCFG_PLATFORM_HI3516DV300)), y)
- PLATFORM_INCLUDE += -I $(LITEOSTOPDIR)/../../vendor/hisi/hi35xx/$(LITEOS_PLATFORM)/config/board/include/hisoc
- +else ifeq ($(LOSCFG_PLATFORM_RV1126),y)
- + PLATFORM_INCLUDE += -I $(LITEOSTOPDIR)/../../vendor/rockchip/rv1126/board/include
- +else ifeq ($(LOSCFG_PLATFORM_RK3126C),y)
- + PLATFORM_INCLUDE += -I $(LITEOSTOPDIR)/../../vendor/rockchip/rk3126c/board/include
- +else ifeq ($(LOSCFG_PLATFORM_RK3288),y)
- + PLATFORM_INCLUDE += -I $(LITEOSTOPDIR)/../../vendor/rockchip/rk3288/board/include
- endif
- +
- #
- #-include $(LITEOSTOPDIR)/platform/bsp/board/$(LITEOS_PLATFORM)/board.mk
- #
kernel / liteos_a / arch / arm / arm / src / startup / reset_vector_up，添加uart打印显示调试信息，注释启用fpu + neon的指令// MCR p15，0，r0，c1，c1，2，不注释会卡在这。
- diff --git a/arch/arm/arm/src/startup/reset_vector_up b/arch/arm/arm/src/startup/reset_vector_up
- index d7de477..8cddab8 100755
- --- a/arch/arm/arm/src/startup/reset_vector_up.S
- +++ b/arch/arm/arm/src/startup/reset_vector_up.S
- @@ -113,11 +113,36 @@ __exception_handlers:
- .global reset_vector
- .type reset_vector,function
- reset_vector:
- + ldr sp,=0x75000000
- +
- +#if 0
- /* do some early cpu setup: i/d cache disable, mmu disabled */
- mrc p15, 0, r0, c1, c0, 0
- bic r0, #(1<<12)
- bic r0, #(1<<2 | 1<<0)
- mcr p15, 0, r0, c1, c0, 0
- +#endif
- +
- +#if 0
- + /*
- + * disable interrupts (FIQ and IRQ), also set the cpu to SVC32 mode,
- + * except if in HYP mode already
- + */
- + mrs r0, cpsr
- + and r1, r0, #0x1f @ mask mode bits
- + teq r1, #0x1a @ test for HYP mode
- + bicne r0, r0, #0x1f @ clear all mode bits
- + orrne r0, r0, #0x13 @ set SVC mode
- + orr r0, r0, #0xc0 @ disable FIQ and IRQ
- + msr cpsr,r0
- +
- + /*
- + * If I-cache is enabled invalidate it
- + */
- + mcr p15, 0, r0, c7, c5, 0 @ invalidate icache
- + mcr p15, 0, r0, c7, c10, 4 @ DSB
- + mcr p15, 0, r0, c7, c5, 4 @ ISB
- +#endif
-
- /* r11: delta of physical address and virtual address */
- adr r11, pa_va_offset
- @@ -150,8 +175,11 @@ reloc_img_to_bottom_done:
- add r4, r4, r11
- bl page_table_clear
-
- - PAGE_TABLE_SET SYS_MEM_BASE, KERNEL_VMM_BASE, KERNEL_VMM_SIZE, MMU_DESCRIPTOR_KERNEL_L1_PTE_FLAGS
- +
- +
- PAGE_TABLE_SET SYS_MEM_BASE, UNCACHED_VMM_BASE, UNCACHED_VMM_SIZE, MMU_INITIAL_MAP_STRONGLY_ORDERED
- + PAGE_TABLE_SET DDR_RAMFS_ADDR, DDR_RAMFS_VBASE, DDR_RAMFS_SIZE, MMU_INITIAL_MAP_DEVICE
- + PAGE_TABLE_SET SYS_MEM_BASE, KERNEL_VMM_BASE, KERNEL_VMM_SIZE, MMU_DESCRIPTOR_KERNEL_L1_PTE_FLAGS
- PAGE_TABLE_SET PERIPH_PMM_BASE, PERIPH_DEVICE_BASE, PERIPH_DEVICE_SIZE, MMU_INITIAL_MAP_DEVICE
- PAGE_TABLE_SET PERIPH_PMM_BASE, PERIPH_CACHED_BASE, PERIPH_CACHED_SIZE, MMU_DESCRIPTOR_KERNEL_L1_PTE_FLAGS
- PAGE_TABLE_SET PERIPH_PMM_BASE, PERIPH_UNCACHED_BASE, PERIPH_UNCACHED_SIZE, MMU_INITIAL_MAP_STRONGLY_ORDERED
- @@ -173,8 +201,12 @@ reloc_img_to_bottom_done:
- r*** r7, r11, r6, lsl #20 /* r7: va */
- str r12, [r4, r7, lsr #(20 - 2)] /* jumpTable[vaIndex] = pt entry */
-
- + mov r0,#'V'
- + bl uart_imp_putc_phy
- bl mmu_setup /* set up the mmu */
-
- + mov r0,#'C'
- + bl uart_imp_putc
- /* get cpuid and keep it in r11 */
- mrc p15, 0, r11, c0, c0, 5
- and r11, r11, #MPIDR_CPUID_MASK
- @@ -196,6 +228,8 @@ excstatck_loop:
-
- excstatck_loop_done:
- warm_reset:
- +mov r0,#'D'
- + bl uart_imp_putc
- /* initialize interrupt/exception environments */
- mov r0, #(CPSR_IRQ_DISABLE |CPSR_FIQ_DISABLE|CPSR_IRQ_MODE)
- msr cpsr, r0
- @@ -219,20 +253,23 @@ warm_reset:
-
- /* Note: some functions in LIBGCC1 will cause a "restore from SPSR"!! */
- msr spsr, r0
- -
- +mov r0,#'E'
- + bl uart_imp_putc
- /* set svc stack, every cpu has OS_EXC_SVC_STACK_SIZE stack */
- ldr r0, =__svc_stack_top
- mov r2, #OS_EXC_SVC_STACK_SIZE
- mul r2, r2, r11
- sub r0, r0, r2
- mov sp, r0
- -
- +mov r0,#'F'
- + bl uart_imp_putc
- /* enable fpu+neon */
- MRC p15, 0, r0, c1, c1, 2
- ORR r0, r0, #0xC00
- BIC r0, r0, #0xC000
- - MCR p15, 0, r0, c1, c1, 2
- -
- + //MCR p15, 0, r0, c1, c1, 2
- +mov r0,#'G'
- + bl uart_imp_putc
- LDR r0, =(0xF << 20)
- MCR p15, 0, r0, c1, c0, 2
-
- @@ -266,7 +303,8 @@ bss_loop:
- bl GDB_START
- .word 0xe7ffdeff
- #endif
- -
- +mov r0,#'M'
- + bl uart_imp_putc
- bl main
-
- _start_hang:
3.drivers / hdf / lite
修改hdf_driver.mk根据芯片选择编译的hdf脚本vendor / rockchip / hdf / hdf_vendor.mk
- diff --git a/Makefile b/Makefile
- index 635e1fe..8db4e6c 100755
- --- a/Makefile
- +++ b/Makefile
- @@ -94,6 +94,6 @@ ifeq ($(LOSCFG_DRIVERS_HDF_WIFI), y)
- LOCAL_SRCS += $(HDF_ADAPTER)/network/src/net_device_adapter.c
- endif
- -LOCAL_FLAGS += $(LITEOS_GCOV_OPTS)
- +LOCAL_FLAGS += $(LITEOS_GCOV_OPTS) -Wno-error
- include $(HDF_DRIVER)
- diff --git a/hdf_driver.mk b/hdf_driver.mk
- index 469387e..8710688 100755
- --- a/hdf_driver.mk
- +++ b/hdf_driver.mk
- @@ -20,8 +20,12 @@ HCGEN_PATH := win-x86/bin/hc-gen.exe
- endif
- ifeq ($(LOCAL_HCS_ROOT),)
- +ifeq ($(findstring y, $(LOSCFG_PLATFORM_RV1126)$(LOSCFG_PLATFORM_RK3126C)$(LOSCFG_PLATFORM_RK3288)), y)
- +LOCAL_HCS_ROOT := vendor/rockchip
- +else
- LOCAL_HCS_ROOT := vendor/hisi/hi35xx
- endif
- +endif
- HC_GEN := hc-gen
- BUILD_IN_HC_GEN := $(LITEOSTOPDIR)/../../prebuilts/build-tools/$(HCGEN_PATH)
- diff --git a/hdf_lite.mk b/hdf_lite.mk
- index d6d21d7..46d7940 100755
- --- a/hdf_lite.mk
- +++ b/hdf_lite.mk
- @@ -36,7 +36,13 @@ ifeq ($(LOSCFG_DRIVERS_HDF_USB), y)
- endif
- # vendor lib
- +ifeq ($(findstring y, $(LOSCFG_PLATFORM_HI3518EV300)$(LOSCFG_PLATFORM_HI3516DV300)), y)
- include $(LITEOSTOPDIR)/../../vendor/huawei/hdf/hdf_vendor.mk
- +endif
- +
- +ifeq ($(findstring y, $(LOSCFG_PLATFORM_RV1126)$(LOSCFG_PLATFORM_RK3126C)$(LOSCFG_PLATFORM_RK3288)), y)
- +include $(LITEOSTOPDIR)/../../vendor/rockchip/hdf/hdf_vendor.mk
- +endif
- LITEOS_BASELIB += --no-whole-archive
- endif
4.供应商/芯片
添加rockchip和rk3126c，rk3288，rv1126子目录存放芯片差异相关的board.c和配置文件
补丁打完后可通过build.py进行编译
![]()
build.py rk3126c![]()
编译得到文件用于烧写：
out / rk3126c / liteos.bin
out / rk3126c / rootfs.img
![]()
重启设备进入liteos内核：
![]()
完整补丁上传到附件。
uboot补丁参考：https：//harmonyos.51cto.com/posts/1318
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