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2019-03-07nios2: remove redundant 'default n' from Kconfig-sBartlomiej Zolnierkiewicz1-9/+0
'default n' is the default value for any bool or tristate Kconfig setting so there is no need to write it explicitly. Also since commit f467c5640c29 ("kconfig: only write '# CONFIG_FOO is not set' for visible symbols") the Kconfig behavior is the same regardless of 'default n' being present or not: ... One side effect of (and the main motivation for) this change is making the following two definitions behave exactly the same: config FOO bool config FOO bool default n With this change, neither of these will generate a '# CONFIG_FOO is not set' line (assuming FOO isn't selected/implied). That might make it clearer to people that a bare 'default n' is redundant. ... Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
2017-05-08nios2: Add CDX supportMarek Vasut1-0/+9
Add support for the CDX Code Density Extensions present in Nios II R2 . This introduces new 16bit instruction set to improve code density while retaining support for the 32bit Nios II R2 instructions. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Ley Foon Tan <lftan@altera.com>
2017-05-08nios2: Add BMX supportMarek Vasut1-0/+9
Add support for the BMX Bit Manipulation Extensions present in Nios II R2 . This introduces three new instructions, EXTRACT, INSERT and MERGE. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Ley Foon Tan <lftan@altera.com>
2017-05-08nios2: Add NIOS2_ARCH_REVISION to select between R1 and R2Marek Vasut1-0/+8
Allow user to select between Nios2 R1 and R2. Since R1 and R2 are not binary compatible, we cannot have a single kernel binary and there is no point in having DT property for discerning these two. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Ley Foon Tan <lftan@altera.com>
2016-06-23nios2: Remove unnecessary of_platform_populate with default match tableKefeng Wang1-3/+1
After patch "of/platform: Add common method to populate default bus", it is possible for arch code to remove unnecessary callers of of_platform_populate with default match table. Cc: Ley Foon Tan <lftan@altera.com> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Rob Herring <robh@kernel.org>
2014-12-08nios2: Build infrastructureLey Foon Tan2-0/+130
This patch adds Makefile and Kconfig files required for building a nios2 kernel. Signed-off-by: Ley Foon Tan <lftan@altera.com>
2014-12-08nios2: Device tree supportLey Foon Tan1-0/+46
Add device tree support to arch/nios2. Signed-off-by: Ley Foon Tan <lftan@altera.com>