u-boot.git/arch/arc/Kconfig, branch v2016.09

arc: Rename AXS101 board to more generic AXS10x

2016-08-05T09:50:33Z

As of now we have 2 flavors of ARC SDP boards: 1) AXS101 - with ARC770 in ASIC 2) AXS103 - with ARC HS38 in FPGA Both options share exactly the same base-board and only differ with CPU-tiles in use. That means all peripherals are the same (they are implemented in FPGA on the base-board) and so generic board could be used for both. While at it: * Recreated defconfigs with savedefconfig * In include/configs/axs10x.h numerical sizes replaced with defines from linux/sizes.h for better readability. Signed-off-by: Alexey Brodkin Reviewed-by: Tom Rini

arc: Rename ARCangel4 board to nSIM

2016-08-05T09:50:25Z

ARCangel was one of the main development boards back in the day but now it's gone and replaced by other boards like ARC SDP. But we also used to have simulation platform very similar to ARCangel4 in terms of CPU settings as well as basic IO like UART. Even though ARCangel4 is long gone now we have a replacement for simulation which is a plain or stand-alone nSIM and Free nSIM. Note Free nSIM is available for download here: https://www.synopsys.com/cgi-bin/dwarcnsim/req1.cgi And while at it: * Finally switch hex numerical values in nsim.h to defines from include/linux/sizes.h * Add defconfigs with ARC HS38 cores * Recreated all defconfigs with savedefconfig Signed-off-by: Alexey Brodkin

arc: cache - accommodate different L1 cache line lengths

2016-02-20T08:19:53Z

ARC core could be configured with different L1 and L2 (AKA SLC) cache line lengths. At least these values are possible and were really used: 32, 64 or 128 bytes. Current implementation requires cache line to be selected upon U-Boot configuration and then it will only work on matching hardware. Indeed this is quite efficient because cache line length gets hardcoded during code compilation. But OTOH it makes binary less portable. With this commit we allow U-Boot to determine real L1 cache line length early in runtime and use this value later on. This extends portability of U-Boot binary a lot. Signed-off-by: Alexey Brodkin

arc: make AXS101 default platform

2015-09-07T10:38:24Z

This fixes building in automated flow that doesn't use defconfigs. See discussion on that topic here: http://patchwork.ozlabs.org/patch/502558/ See similar patches for other architectures/platforms here: [1] http://git.denx.de/?p=u-boot.git;a=commit;h=ff560a13056a565a4e9ce1761bd04276a3cace88 [2] http://git.denx.de/?p=u-boot.git;a=commit;h=589907e2c187ec69b351c38ccda36730d25ab5d6 And while at it add missing shell prompt to axs103. Cc: Tom Rini Cc: Joe Hershberger Cc: Masahiro Yamada Signed-off-by: Alexey Brodkin

Move default y configs out of arch/board Kconfig

2015-06-26T02:17:55Z

Some archs/boards specify their own default by pre-defining the config which causes the Kconfig system to mix up the order of the configs in the defconfigs... This will cause merge pain if allowed to proliferate. Remove the configs that behave this way from the archs. A few configs still remain, but that is because they only exist as defaults and do not have a proper Kconfig entry. Those appear to be: SPIFLASH DISPLAY_BOARDINFO Signed-off-by: Joe Hershberger [trini: rastaban, am43xx_evm_usbhost_boot, am43xx_evm_ethboot updates, drop DM_USB from MSI_Primo81 as USB_MUSB_SUNXI isn't converted yet to DM] Signed-off-by: Tom Rini

arc: remove dummy target

2015-05-13T16:20:35Z

TARGET_DUMMY was introduced to resolve the same problem as commit "arch: Make board selection choices optional" http://git.denx.de/?p=u-boot.git;a=commit;h=a26cd04920dc069fd6e91abb785426cf6c29f45f Latter implementation is much cleaner and appropriate. And anyways TARGET_DUMMY is no longer required. Signed-off-by: Alexey Brodkin Acked-by: Joe Hershberger

arch: Make board selection choices optional

2015-05-12T22:10:02Z

By making the board selections optional, every defconfig will include the board selection when running savedefconfig so if a new board is added to the top of the list of choices the former top's defconfig will still be correct. Signed-off-by: Joe Hershberger Cc: Masahiro Yamada Acked-by: Stephen Warren Cc: Tom Rini

arc: minor fixes in Kconfig

2015-04-03T06:47:49Z

[1] Fix misspeling in ARC_CACHE_LINE_SHIFT dependency, now cache-line lenth selection is correctly enabled if either I$ or D$ are enabled. [2] Add dummy entry to target list to make sure target type is always mentioned in defconfig. Otherwise defconfig for the first target in the list will not have target name and later on with addition of the new target on top of the list in Kconfig will lead to corrupted configuration expanded from defconfig. Signed-off-by: Alexey Brodkin

arc: introduce U-Boot port for ARCv2 ISA

2015-02-13T06:17:51Z

ARC HS and ARC EM are new cores based on ARCv2 ISA which is binary incompatible with ISAv1 (AKA ARCompact). Significant difference between ISAv2 and v1 is implementation of interrupt vector table. In v1 it is implemented in the same way as on many other architectures - as a special location where user may put whether code executed in place (if machine word of space is enough) or jump to a full-scale interrupt handler. In v2 interrupt table is just an array of adresses of real interrupt handlers. That requires a separate section for IVT that is not encoded as code by assembler. This change adds support for following cores: * ARC EM6 (simple 32-bit microcontroller without MMU) * ARC HS36 (advanced 32-bit microcontroller without MMU) * ARC HS38 (advanced 32-bit microcontroller with MMU) As a part of ARC HS38 new version of MMU (v4) was introduced. Also this change adds AXS131 board which is the same DW ARC SDP base board but with ARC HS38 CPU tile. Signed-off-by: Alexey Brodkin

arc: build libgcc in U-Boot

2015-02-09T13:41:20Z

This way we may have very limited set of functions implemented so we save some space. Also it allows us to build U-Boot for any ARC core with the same one toolchain because we don't rely on pre-built libgcc. For example: * we may use little-endian toolchain but build U-Boot for ether endianess * we may use non-multilibbed uClibc toolchain but build U-Boot for whatever ARC CPU flavour that current GCC supports Private libgcc built from generic C implementation contributes only 144 bytes to .text section so we don't see significant degradation of size: --->8--- $ arc-linux-size u-boot.libgcc-prebuilt text data bss dec hex filename 222217 24912 214820 461949 70c7d u-boot.libgcc-prebuilt $ arc-linux-size u-boot.libgcc-private text data bss dec hex filename 222361 24912 214820 462093 70d0d u-boot.libgcc-private --->8--- Also I don't notice visible performance degradation compared to pre-built libgcc (where at least "*div*" functions are had-written in assembly) on typical operations of downloading 10Mb uImage over TFTP and bootm. Signed-off-by: Alexey Brodkin