CONFIG_SPL_SYS_[DI]CACHE_OFF: add

While converting CONFIG_SYS_[DI]CACHE_OFF to Kconfig, there are instances
where these configuration items are conditional on SPL. This commit adds SPL
variants of these configuration items, uses CONFIG_IS_ENABLED(), and updates
the configurations as required.

Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Trevor Woerner <trevor@toganlabs.com>
[trini: Make the default depend on the setting for full U-Boot, update
more zynq hardware]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 240d3bb..0cb9720 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -114,12 +114,26 @@
 	help
 	  Do not enable instruction cache in U-Boot.
 
+config SPL_SYS_ICACHE_OFF
+	bool "Do not enable icache in SPL"
+	depends on SPL
+	default SYS_ICACHE_OFF
+	help
+	  Do not enable instruction cache in SPL.
+
 config SYS_DCACHE_OFF
 	bool "Do not enable dcache"
 	default n
 	help
 	  Do not enable data cache in U-Boot.
 
+config SPL_SYS_DCACHE_OFF
+	bool "Do not enable dcache in SPL"
+	depends on SPL
+	default SYS_DCACHE_OFF
+	help
+	  Do not enable data cache in SPL.
+
 menuconfig ARC_DBG
 	bool "ARC debugging"
 	default n
diff --git a/arch/arc/lib/start.S b/arch/arc/lib/start.S
index 84959b4..8c744f5 100644
--- a/arch/arc/lib/start.S
+++ b/arch/arc/lib/start.S
@@ -16,7 +16,7 @@
 	lr	r5, [ARC_BCR_IC_BUILD]
 	breq	r5, 0, 1f		; I$ doesn't exist
 	lr	r5, [ARC_AUX_IC_CTRL]
-#ifndef CONFIG_SYS_ICACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_ICACHE_OFF)
 	bclr	r5, r5, 0		; 0 - Enable, 1 is Disable
 #else
 	bset	r5, r5, 0		; I$ exists, but is not used
@@ -37,7 +37,7 @@
 	breq	r5, 0, 1f		; D$ doesn't exist
 	lr	r5, [ARC_AUX_DC_CTRL]
 	bclr	r5, r5, 6		; Invalidate (discard w/o wback)
-#ifndef CONFIG_SYS_DCACHE_OFF
+#if !CONFIG_IS_ENABLED(SYS_DCACHE_OFF)
 	bclr	r5, r5, 0		; Enable (+Inv)
 #else
 	bset	r5, r5, 0		; Disable (+Inv)