arch/x86/Kconfig: Drop obsolete fixed ramstage symbols

On x86 ramstage is always relocated at runtime in cbmem so there is no
need to have this configurable in Kconfig.

Change-Id: I01b2335d0b82bea8f885ee5ca9814351bbf2aa3c
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63215
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/arch/x86/Kconfig

@@ -118,22 +118,6 @@ config SIPI_VECTOR_IN_ROM
 	default n
 	depends on ARCH_X86
 
-# Set the rambase for systems that still need it, only 5 chipsets as of
-# Sep 2018. This value was 0x100000, chosen to match the entry point
-# of Linux 2.2 in 1999. The new value, 14 MiB, makes a lot more sense
-# for as long as we need it; with luck, that won't be much longer.
-# In the long term, both RAMBASE and RAMTOP should be removed.
-# This value leaves more than 1 MiB which is required for fam10
-# and broadwell_de.
-config RAMBASE
-	hex
-	default 0xe00000
-
-config RAMTOP
-	hex
-	default 0x1000000
-	depends on ARCH_X86
-
 # Traditionally BIOS region on SPI flash boot media was memory mapped right below
 # 4G and it was the last region in the IFD. This way translation between CPU
 # address space to flash address was trivial. However some IFDs on newer SoCs

src/arch/x86/include/arch/memlayout.h

@@ -3,10 +3,6 @@
 #ifndef __ARCH_MEMLAYOUT_H
 #define __ARCH_MEMLAYOUT_H
 
-#if (CONFIG_RAMTOP == 0)
-# error "CONFIG_RAMTOP not configured"
-#endif
-
 /* Intel386 psABI requires a 16 byte aligned stack. */
 #define ARCH_STACK_ALIGN_SIZE 16
 

src/arch/x86/memlayout.ld

@@ -13,7 +13,8 @@ SECTIONS
 	 * conditionalize with macros.
 	 */
 #if ENV_RAMSTAGE
-	RAMSTAGE(CONFIG_RAMBASE, 8M)
+	/* Relocated at runtime in cbmem so the address does not matter. */
+	RAMSTAGE(64M, 8M)
 
 #elif ENV_ROMSTAGE
 	/* The 1M size is not allocated. It's just for basic size checking.