mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-17 00:33:06 +00:00
379b3280b3
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 <abrodkin@synopsys.com>
138 lines
2.5 KiB
Text
138 lines
2.5 KiB
Text
menu "ARC architecture"
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depends on ARC
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config SYS_ARCH
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default "arc"
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config SYS_CPU
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default "arcv1" if ISA_ARCOMPACT
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default "arcv2" if ISA_ARCV2
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choice
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prompt "ARC Instruction Set"
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default ISA_ARCOMPACT
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config ISA_ARCOMPACT
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bool "ARCompact ISA"
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help
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The original ARC ISA of ARC600/700 cores
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config ISA_ARCV2
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bool "ARC ISA v2"
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help
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ISA for the Next Generation ARC-HS cores
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endchoice
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choice
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prompt "CPU selection"
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default CPU_ARC770D if ISA_ARCOMPACT
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default CPU_ARCHS38 if ISA_ARCV2
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config CPU_ARC750D
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bool "ARC 750D"
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select ARC_MMU_V2
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depends on ISA_ARCOMPACT
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help
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Choose this option to build an U-Boot for ARC750D CPU.
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config CPU_ARC770D
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bool "ARC 770D"
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select ARC_MMU_V3
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depends on ISA_ARCOMPACT
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help
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Choose this option to build an U-Boot for ARC770D CPU.
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config CPU_ARCEM6
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bool "ARC EM6"
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select ARC_MMU_ABSENT
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depends on ISA_ARCV2
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help
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Next Generation ARC Core based on ISA-v2 ISA without MMU.
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config CPU_ARCHS36
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bool "ARC HS36"
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select ARC_MMU_ABSENT
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depends on ISA_ARCV2
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help
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Next Generation ARC Core based on ISA-v2 ISA without MMU.
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config CPU_ARCHS38
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bool "ARC HS38"
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select ARC_MMU_V4
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depends on ISA_ARCV2
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help
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Next Generation ARC Core based on ISA-v2 ISA with MMU.
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endchoice
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choice
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prompt "MMU Version"
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default ARC_MMU_V3 if CPU_ARC770D
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default ARC_MMU_V2 if CPU_ARC750D
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default ARC_MMU_ABSENT if CPU_ARCEM6
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default ARC_MMU_ABSENT if CPU_ARCHS36
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default ARC_MMU_V4 if CPU_ARCHS38
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config ARC_MMU_ABSENT
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bool "No MMU"
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help
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No MMU
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config ARC_MMU_V2
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bool "MMU v2"
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depends on CPU_ARC750D
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help
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Fixed the deficiency of v1 - possible thrashing in memcpy sceanrio
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when 2 D-TLB and 1 I-TLB entries index into same 2way set.
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config ARC_MMU_V3
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bool "MMU v3"
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depends on CPU_ARC770D
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help
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Introduced with ARC700 4.10: New Features
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Variable Page size (1k-16k), var JTLB size 128 x (2 or 4)
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Shared Address Spaces (SASID)
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config ARC_MMU_V4
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bool "MMU v4"
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depends on CPU_ARCHS38
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help
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Introduced as a part of ARC HS38 release.
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endchoice
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config CPU_BIG_ENDIAN
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bool "Enable Big Endian Mode"
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default n
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help
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Build kernel for Big Endian Mode of ARC CPU
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config SYS_ICACHE_OFF
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bool "Do not use Instruction Cache"
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default n
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config SYS_DCACHE_OFF
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bool "Do not use Data Cache"
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default n
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choice
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prompt "Target select"
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default TARGET_AXS101
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config TARGET_TB100
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bool "Support tb100"
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config TARGET_ARCANGEL4
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bool "Support arcangel4"
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config TARGET_AXS101
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bool "Support axs101"
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endchoice
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source "board/abilis/tb100/Kconfig"
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source "board/synopsys/Kconfig"
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source "board/synopsys/axs101/Kconfig"
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endmenu
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