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| author | Paul Burton <paul.burton@imgtec.com> | 2016-05-16 10:52:12 +0100 |
|---|---|---|
| committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2016-05-21 01:36:39 +0200 |
| commit | c52ebea1ccb6f8cdd0b1d883056d215c715a5920 (patch) | |
| tree | ab92f2a518e7b97f3f481c3c5321aa63cceee518 | |
| parent | 20286cdff766d64dc718a9d855b049580dfeb3cc (diff) | |
| download | u-boot-imx-c52ebea1ccb6f8cdd0b1d883056d215c715a5920.zip u-boot-imx-c52ebea1ccb6f8cdd0b1d883056d215c715a5920.tar.gz u-boot-imx-c52ebea1ccb6f8cdd0b1d883056d215c715a5920.tar.bz2 | |
MIPS: Support for targetting MIPSr6
Add support for targetting MIPS32r6 & MIPS64r6 systems, in the same way
that we currently select release 1 or release 2 targets. MIPSr6 is not
entirely backwards compatible with earlier releases of the architecture.
Some instructions are encoded differently, some are removed, some are
reused, so it is not practical to run U-Boot built for earlier revisions
on a MIPSr6 system. Update their Kconfig help text to reflect that.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
| -rw-r--r-- | arch/mips/Kconfig | 34 | ||||
| -rw-r--r-- | arch/mips/Makefile | 2 |
2 files changed, 30 insertions, 6 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 6acd1f4..994168c 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -104,7 +104,7 @@ config CPU_MIPS32_R1 depends on SUPPORTS_CPU_MIPS32_R1 select 32BIT help - Choose this option to build an U-Boot for release 1 or later of the + Choose this option to build an U-Boot for release 1 through 5 of the MIPS32 architecture. config CPU_MIPS32_R2 @@ -112,7 +112,15 @@ config CPU_MIPS32_R2 depends on SUPPORTS_CPU_MIPS32_R2 select 32BIT help - Choose this option to build an U-Boot for release 2 or later of the + Choose this option to build an U-Boot for release 2 through 5 of the + MIPS32 architecture. + +config CPU_MIPS32_R6 + bool "MIPS32 Release 6" + depends on SUPPORTS_CPU_MIPS32_R6 + select 32BIT + help + Choose this option to build an U-Boot for release 6 or later of the MIPS32 architecture. config CPU_MIPS64_R1 @@ -120,7 +128,7 @@ config CPU_MIPS64_R1 depends on SUPPORTS_CPU_MIPS64_R1 select 64BIT help - Choose this option to build a kernel for release 1 or later of the + Choose this option to build a kernel for release 1 through 5 of the MIPS64 architecture. config CPU_MIPS64_R2 @@ -128,7 +136,15 @@ config CPU_MIPS64_R2 depends on SUPPORTS_CPU_MIPS64_R2 select 64BIT help - Choose this option to build a kernel for release 2 or later of the + Choose this option to build a kernel for release 2 through 5 of the + MIPS64 architecture. + +config CPU_MIPS64_R6 + bool "MIPS64 Release 6" + depends on SUPPORTS_CPU_MIPS64_R6 + select 64BIT + help + Choose this option to build a kernel for release 6 or later of the MIPS64 architecture. endchoice @@ -175,19 +191,25 @@ config SUPPORTS_CPU_MIPS32_R1 config SUPPORTS_CPU_MIPS32_R2 bool +config SUPPORTS_CPU_MIPS32_R6 + bool + config SUPPORTS_CPU_MIPS64_R1 bool config SUPPORTS_CPU_MIPS64_R2 bool +config SUPPORTS_CPU_MIPS64_R6 + bool + config CPU_MIPS32 bool - default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 + default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6 config CPU_MIPS64 bool - default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 + default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6 config MIPS_TUNE_4KC bool diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 94f7e16..655a493 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -19,8 +19,10 @@ PLATFORM_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs)) # Optimize for MIPS architectures arch-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,-mips32 arch-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,-mips32r2 +arch-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,-mips32r6 arch-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,-mips64 arch-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,-mips64r2 +arch-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,-mips64r6 # Allow extra optimization for specific CPUs/SoCs tune-$(CONFIG_MIPS_TUNE_4KC) += -mtune=4kc |