Rename TEXT_BASE into CONFIG_SYS_TEXT_BASE

The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.

Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/arch/arm/cpu/arm1176/start.S b/arch/arm/cpu/arm1176/start.S
index 6277ae0..24e5bf4 100644
--- a/arch/arm/cpu/arm1176/start.S
+++ b/arch/arm/cpu/arm1176/start.S
@@ -97,7 +97,7 @@
 
 .globl _TEXT_BASE
 _TEXT_BASE:
-	.word	TEXT_BASE
+	.word	CONFIG_SYS_TEXT_BASE
 
 /*
  * Below variable is very important because we use MMU in U-Boot.
@@ -205,7 +205,7 @@
 
 	/* Prepare to disable the MMU */
 	adr	r2, mmu_disable_phys
-	sub	r2, r2, #(CONFIG_SYS_PHY_UBOOT_BASE - TEXT_BASE)
+	sub	r2, r2, #(CONFIG_SYS_PHY_UBOOT_BASE - CONFIG_SYS_TEXT_BASE)
 	b	mmu_disable
 
 	.align 5
@@ -444,7 +444,7 @@
 
 	/* Prepare to disable the MMU */
 	adr	r2, mmu_disable_phys
-	sub	r2, r2, #(CONFIG_SYS_PHY_UBOOT_BASE - TEXT_BASE)
+	sub	r2, r2, #(CONFIG_SYS_PHY_UBOOT_BASE - CONFIG_SYS_TEXT_BASE)
 	b	mmu_disable
 
 	.align 5