~hc/RK356X_SDK_RELEASE.git

..	..	@@ -22,6 +22,7 @@
22	22	select ARCH_HAS_GIGANTIC_PAGE
23	23	select ARCH_HAS_KCOV
24	24	select ARCH_HAS_MMIOWB
	25	+ select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE
25	26	select ARCH_HAS_PTE_SPECIAL
26	27	select ARCH_HAS_SET_DIRECT_MAP
27	28	select ARCH_HAS_SET_MEMORY
..	..	@@ -331,6 +332,28 @@
331	332
332	333	endmenu
333	334
	335	+config TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
	336	+ def_bool y
	337	+ # https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=aed44286efa8ae8717a77d94b51ac3614e2ca6dc
	338	+ depends on AS_IS_GNU && AS_VERSION >= 23800
	339	+ help
	340	+ Newer binutils versions default to ISA spec version 20191213 which
	341	+ moves some instructions from the I extension to the Zicsr and Zifencei
	342	+ extensions.
	343	+
	344	+config TOOLCHAIN_NEEDS_OLD_ISA_SPEC
	345	+ def_bool y
	346	+ depends on TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI
	347	+ # https://github.com/llvm/llvm-project/commit/22e199e6afb1263c943c0c0d4498694e15bf8a16
	348	+ depends on CC_IS_CLANG && CLANG_VERSION < 170000
	349	+ help
	350	+ Certain versions of clang do not support zicsr and zifencei via -march
	351	+ but newer versions of binutils require it for the reasons noted in the
	352	+ help text of CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI. This
	353	+ option causes an older ISA spec compatible with these older versions
	354	+ of clang to be passed to GAS, which has the same result as passing zicsr
	355	+ and zifencei to -march.
	356	+
334	357	config FPU
335	358	bool "FPU support"
336	359	default y