NetCube-Systems-Austria/kumquat-buildroot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
34f204dc63
kumquat-buildroot/arch/Config.in.arc

81 lines
1.7 KiB
Plaintext
Raw Normal View History

arc: add explicit selection of CPU templates ARC 750D and ARC770D This separation allows to specify unique options and features for each CPU. For example ARC 770D has LLOCK/SCOND instructions built-in by default. Also this new scheme simplifies selection of proper configuration for users - preconfigured options now match templates for ARC CPUs. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Anton Kolesov <akolesov@synopsys.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-10-30 14:57:27 +01:00
choice
prompt "Target CPU"
depends on BR2_arc
default BR2_arc770d
help
Specific CPU to use
config BR2_arc750d
bool "ARC 750D"
config BR2_arc770d
bool "ARC 770D"
arc: add support of ARC HS38 core Synopsys has recently announced its new ARC HS38 core that is capable of running Linux - http://www.synopsys.com/dw/ipdir.php?ds=arc-hs38-processor ARC HS38 is based on ARCv2 ISA and requires special settings of gcc and libc. Also in case of HS38 atomic extensions (LLOCK/SCOND instructions) are built-in by default, so enabling atomic extensions in Buildroot as well. This commit adds support of the core in buildroot. [Peter: string type, so must be in quotes as noted by Yann] Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Anton Kolesov <anton.kolesov@synopsys.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-10-30 14:57:29 +01:00
config BR2_archs38
bool "ARC HS38"
arc: add explicit selection of CPU templates ARC 750D and ARC770D This separation allows to specify unique options and features for each CPU. For example ARC 770D has LLOCK/SCOND instructions built-in by default. Also this new scheme simplifies selection of proper configuration for users - preconfigured options now match templates for ARC CPUs. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Anton Kolesov <akolesov@synopsys.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-10-30 14:57:27 +01:00
endchoice
# Choice of atomic instructions presence
toolchain: Add config option for atomic intrinsics GCC has several builtin functions that implement atomic operations. Those functions are architecture specific and may not be implemented by the specific toolchain. In case of GCC for ARC those functions rely on LLOCK/SCOND instructions which are optional in ARC CPU's. If ARC CPU doesn't support those instructions but software tries to use them, then application will be aborted with Illegal instruction exception. To avoid confusion user should first specify that their CPU supports atomic extension, which will allow selection of packages that use builtin atomic functions. Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-07-31 15:24:42 +02:00
config BR2_ARC_ATOMIC_EXT
bool "Atomic extension (LLOCK/SCOND instructions)"
arc: add support of ARC HS38 core Synopsys has recently announced its new ARC HS38 core that is capable of running Linux - http://www.synopsys.com/dw/ipdir.php?ds=arc-hs38-processor ARC HS38 is based on ARCv2 ISA and requires special settings of gcc and libc. Also in case of HS38 atomic extensions (LLOCK/SCOND instructions) are built-in by default, so enabling atomic extensions in Buildroot as well. This commit adds support of the core in buildroot. [Peter: string type, so must be in quotes as noted by Yann] Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Anton Kolesov <anton.kolesov@synopsys.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-10-30 14:57:29 +01:00
default y if BR2_arc770d || BR2_archs38
arch/arc: fix atomics selection Due to a kconfig limitation, we can't select a no-prompt symbol that gets its dependencies by being conditionally re-defined in one or more if-blocks, like we currently do for BR2_ARCH_HAS_ATOMICS. As a workaround to this issue, we just redefine that symbol in the arc if-block, like we do for all other architectures, except that in the arc case, the default value is conditional. Reported-by: Anton Kolesov <Anton.Kolesov@synopsys.com> [yann.morin.1998@free.fr: indepently re-done a patch similar to the one Thomas made on his own] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-09-11 22:46:46 +02:00
config BR2_ARCH_HAS_ATOMICS
default y if BR2_ARC_ATOMIC_EXT
toolchain: Add config option for atomic intrinsics GCC has several builtin functions that implement atomic operations. Those functions are architecture specific and may not be implemented by the specific toolchain. In case of GCC for ARC those functions rely on LLOCK/SCOND instructions which are optional in ARC CPU's. If ARC CPU doesn't support those instructions but software tries to use them, then application will be aborted with Illegal instruction exception. To avoid confusion user should first specify that their CPU supports atomic extension, which will allow selection of packages that use builtin atomic functions. Signed-off-by: Anton Kolesov <Anton.Kolesov@synopsys.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-07-31 15:24:42 +02:00
arc: Add ARC and ARC BE architecture Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs that can be used from deeply embedded to high performance host applications. Signed-off-by: Mischa Jonker <mjonker@synopsys.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2013-05-02 11:51:23 +02:00
config BR2_ARCH
default "arc" if BR2_arcle
default "arceb" if BR2_arceb
config BR2_arc
bool
default y if BR2_arcle || BR2_arceb
config BR2_ENDIAN
default "LITTLE" if BR2_arcle
default "BIG" if BR2_arceb
config BR2_GCC_TARGET_CPU
arc: add explicit selection of CPU templates ARC 750D and ARC770D This separation allows to specify unique options and features for each CPU. For example ARC 770D has LLOCK/SCOND instructions built-in by default. Also this new scheme simplifies selection of proper configuration for users - preconfigured options now match templates for ARC CPUs. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Anton Kolesov <akolesov@synopsys.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-10-30 14:57:27 +01:00
default "arc700" if BR2_arc750d
default "arc700" if BR2_arc770d
arc: add support of ARC HS38 core Synopsys has recently announced its new ARC HS38 core that is capable of running Linux - http://www.synopsys.com/dw/ipdir.php?ds=arc-hs38-processor ARC HS38 is based on ARCv2 ISA and requires special settings of gcc and libc. Also in case of HS38 atomic extensions (LLOCK/SCOND instructions) are built-in by default, so enabling atomic extensions in Buildroot as well. This commit adds support of the core in buildroot. [Peter: string type, so must be in quotes as noted by Yann] Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Anton Kolesov <anton.kolesov@synopsys.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2014-10-30 14:57:29 +01:00
default "archs" if BR2_archs38
ARC: allow selection of MMU page size Modern ARC cores (those sporting MMU of version 3 and 4) allow selection of different page sizes (4, 8 or 16 kB) during ASIC design creation. And it's important to build a toolchain with page size setting that matches hardware. Otherwise user-space applications will fail on execution due to unexpected data layout/alignment etc. [Thomas: slightly improve help text, fix indentation of help text.] Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Anton Kolesov <akolesov@synopsys.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Arnout Vandecappelle <arnout@mind.be> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-07-17 11:11:42 +02:00
choice
prompt "MMU Page Size"
default BR2_ARC_PAGE_SIZE_8K
help
MMU starting from version 3 (found in ARC 770) and now
version 4 (found in ARC HS38) allows the selection of the
page size during ASIC design creation.
The following options are available for MMU v3 and v4: 4kB,
8kB and 16 kB.
The default is 8 kB (that really matches the only page size
in MMU v2). It is important to build a toolchain with page
size matching the hardware configuration. Otherwise
user-space applications will fail at runtime.
config BR2_ARC_PAGE_SIZE_4K
bool "4KB"
depends on BR2_arc770d || BR2_archs38
config BR2_ARC_PAGE_SIZE_8K
bool "8KB"
help
This is the one and only option available for MMUv2 and
default value for MMU v3 and v4.
config BR2_ARC_PAGE_SIZE_16K
bool "16KB"
depends on BR2_arc770d || BR2_archs38
endchoice
config BR2_ARC_PAGE_SIZE
string
default "4K" if BR2_ARC_PAGE_SIZE_4K
default "8K" if BR2_ARC_PAGE_SIZE_8K
default "16K" if BR2_ARC_PAGE_SIZE_16K
Reference in New Issue Copy Permalink