arc: select cache settings via menuconfig

[karo-tx-uboot.git] / arch / arc / Kconfig

diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 6a77b8f34c9d87fc19205865786c9b7ed6c93e55..397b1791980ef565eaaea349efd49cb4308eda9f 100644 (file)
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -5,7 +5,66 @@ config SYS_ARCH
        default "arc"
 
 config SYS_CPU
-       default "arc700"
+       default "arcv1"
+
+choice
+       prompt "CPU selection"
+       default CPU_ARC770D
+
+config CPU_ARC750D
+       bool "ARC 750D"
+       select ARC_MMU_V2
+       help
+         Choose this option to build an U-Boot for ARC750D CPU.
+
+config CPU_ARC770D
+       bool "ARC 770D"
+       select ARC_MMU_V3
+       help
+         Choose this option to build an U-Boot for ARC770D CPU.
+
+endchoice
+
+choice
+       prompt "MMU Version"
+       default ARC_MMU_V3 if CPU_ARC770D
+       default ARC_MMU_V2 if CPU_ARC750D
+
+config ARC_MMU_V2
+       bool "MMU v2"
+       depends on CPU_ARC750D
+       help
+         Fixed the deficiency of v1 - possible thrashing in memcpy sceanrio
+         when 2 D-TLB and 1 I-TLB entries index into same 2way set.
+
+config ARC_MMU_V3
+       bool "MMU v3"
+       depends on CPU_ARC770D
+       help
+         Introduced with ARC700 4.10: New Features
+         Variable Page size (1k-16k), var JTLB size 128 x (2 or 4)
+         Shared Address Spaces (SASID)
+
+endchoice
+
+config SYS_ICACHE_OFF
+       bool "Do not use Instruction Cache"
+       default n
+
+config SYS_DCACHE_OFF
+       bool "Do not use Data Cache"
+       default n
+
+config ARC_CACHE_LINE_SHIFT
+       int "Cache Line Length (as power of 2)"
+       range 5 7
+       default "6"
+       depends on !SYS_DCACHE_OFF || !SYS_DCACHE_OFF
+       help
+         Starting with ARC700 4.9, Cache line length is configurable,
+         This option specifies "N", with Line-len = 2 power N
+         So line lengths of 32, 64, 128 are specified by 5,6,7, respectively
+         Linux only supports same line lengths for I and D caches.
 
 choice
        prompt "Target select"