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| author |   Erico Nunes <nunes.erico@gmail.com> | 2015-06-21 23:49:10 (GMT) |
|---|---|---|
| committer | Erico Nunes <nunes.erico@gmail.com> | 2015-06-21 23:49:10 (GMT) |
| commit | 230dc12285842a51e0a2a95137ae4eae675b97d3 (patch) | |
| tree | 6c5f15cb38635916cd4e6cfe65d533b88742cd46 | |
| parent | baceedd23903353477617f0b3e1f71cdbb4b3674 (diff) | |
avr: add support for AVR 8-bit architecture
This commit adds support for the Atmel AVR 8-bit RISC architecture.
This is the first 8-bit architecture to be added to crosstool-ng so the
configuration options for 8-bit architectures are added here as well.
gcc has had support for AVR for quite a while, at least since the 4.3
series for the currently popular ATmega microcontroler series.
The AVR architecture only supports bare-metal toolchains.
gcc for the AVR 8-bit architecture, usually referred to as avr-gcc, is
commonly used in conjunction with the avr-libc library which provides
additional resources for the Atmel AVR 8-bit microcontrollers.
avr-gcc can also be found as a supported package in some recent Linux
distributions.
This commit also closes #66
Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
| -rw-r--r-- | config/arch/avr.in | 8 | ||||
| -rw-r--r-- | config/kernel/linux.in | 1 | ||||
| -rw-r--r-- | config/target.in | 18 | ||||
| -rw-r--r-- | scripts/build/arch/avr.sh | 5 |
4 files changed, 32 insertions, 0 deletions
diff --git a/config/arch/avr.in b/config/arch/avr.in new file mode 100644 index 0000000..cf8e9af --- /dev/null +++ b/config/arch/avr.in @@ -0,0 +1,8 @@ +# AVR specific config options + +## select ARCH_SUPPORTS_8 +## select ARCH_DEFAULT_8 +## select ARCH_REQUIRES_MULTILIB +## +## help The 8-bit AVR architecture, as defined by: +## help http://www.atmel.com/products/microcontrollers/avr diff --git a/config/kernel/linux.in b/config/kernel/linux.in index ddefe22..90afabf 100644 --- a/config/kernel/linux.in +++ b/config/kernel/linux.in @@ -1,5 +1,6 @@ # Linux kernel options +## depends on ! ARCH_avr ## select KERNEL_SUPPORTS_SHARED_LIBS ## ## help Build a toolchain targeting systems running Linux as a kernel. diff --git a/config/target.in b/config/target.in index fb5bbc0..31d2dc1 100644 --- a/config/target.in +++ b/config/target.in @@ -8,6 +8,7 @@ config ARCH # Pre-declare target optimisation variables config ARCH_SUPPORTS_BOTH_MMU config ARCH_SUPPORTS_BOTH_ENDIAN +config ARCH_SUPPORTS_8 config ARCH_SUPPORTS_32 config ARCH_SUPPORTS_64 config ARCH_SUPPORTS_WITH_ARCH @@ -60,6 +61,10 @@ config ARCH_SUFFIX comment "Generic target options" #-------------------------------------- +config ARCH_REQUIRES_MULTILIB + bool + select MULTILIB + config MULTILIB bool prompt "Build a multilib toolchain (READ HELP!!!)" @@ -133,12 +138,18 @@ config ARCH_ENDIAN default "little" if ARCH_LE #-------------------------------------- +config ARCH_SUPPORTS_8 + bool + config ARCH_SUPPORTS_32 bool config ARCH_SUPPORTS_64 bool +config ARCH_DEFAULT_8 + bool + config ARCH_DEFAULT_32 bool @@ -147,15 +158,22 @@ config ARCH_DEFAULT_64 config ARCH_BITNESS int + default "8" if ARCH_8 default "32" if ARCH_32 default "64" if ARCH_64 choice bool prompt "Bitness:" + default ARCH_8 if ARCH_DEFAULT_8 default ARCH_32 if ARCH_DEFAULT_32 default ARCH_64 if ARCH_DEFAULT_64 +config ARCH_8 + bool + prompt "8-bit" + depends on ARCH_SUPPORTS_8 + config ARCH_32 bool prompt "32-bit" diff --git a/scripts/build/arch/avr.sh b/scripts/build/arch/avr.sh new file mode 100644 index 0000000..501b020 --- /dev/null +++ b/scripts/build/arch/avr.sh @@ -0,0 +1,5 @@ +# Compute AVR-specific values + +CT_DoArchTupleValues() { + CT_TARGET_ARCH="${CT_ARCH}" +} |