mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-23 10:15:57 +01:00
66 lines
1.8 KiB
Plaintext
66 lines
1.8 KiB
Plaintext
BR2_GLOBAL_PATCH_DIR="../global_patch_dir"
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BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="../kernel_config_fragment"
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BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="../busybox_config_fragment"
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BR2_PACKAGE_KERNEL_MODULE=y
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BR2_PACKAGE_OVERRIDE_FILE=../buildroot_override
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BR2_PACKAGE_STRACE=y
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BR2_ROOTFS_OVERLAY="../rootfs_overlay"
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## Host GDB
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BR2_GDB_VERSION="7.11.1"
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BR2_GDB_VERSION_7_10=n
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BR2_GDB_VERSION_7_11=y
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BR2_GDB_VERSION_7_12=n
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BR2_PACKAGE_HOST_GDB=y
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BR2_PACKAGE_HOST_GDB_PYTHON=y
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BR2_PACKAGE_HOST_GDB_SIM=y
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BR2_PACKAGE_HOST_GDB_TUI=y
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## QEMU.
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BR2_PACKAGE_HOST_QEMU=y
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# False because otherwise we need the host to be as recent as guest.
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BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE=n
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BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE=y
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BR2_PACKAGE_HOST_QEMU_VDE2=y
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## Target GDB
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# This is preparation for target GDB / gdbserver.
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# But those options require a toolchain with threads like glibc,
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# which I'm afraid will make compilation slower, so let's leave it
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# at that for now since our focus is kernel debug.
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#BR2_DEBUG_1=n
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#BR2_DEBUG_2=n
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#BR2_DEBUG_3=y
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#BR2_ENABLE_DEBUG=y
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#BR2_OPTIMIZE_0=y
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# ftrace
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BR2_PACKAGE_TRACE_CMD=y
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# GPIO: lsgpio, gpio-event-mon, gpio-hammer
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BR2_PACKAGE_LINUX_TOOLS=y
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BR2_PACKAGE_LINUX_TOOLS_GPIO=y
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# DTC
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BR2_PACKAGE_DTC=y
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BR2_PACKAGE_DTC_PROGRAMS=y
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BR2_PACKAGE_HOST_DTC=y
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# On ARM, with our lkmc_platform_device:
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#
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# devmem2 0x101e9000 w 0x12345678
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#
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# Then on QEMU monitor, notice that the registers don't actually change value:
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#
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# xp/4 0x101e9000
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#
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# Uses /dev/mem:
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#
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# - https://superuser.com/questions/71389/what-is-dev-mem/1214662#1214662
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# - https://unix.stackexchange.com/questions/4948/shell-command-to-read-device-registers
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#
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# TODO: why with mmap MAP_PRIVATE (used in my previous custom naive version),
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# the entire register page is read?;
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#
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BR2_PACKAGE_DEVMEM2=y
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