Move calls to quick_ram_check() before CBMEM init

After raminit completes, do a read-modify-write test
just below CBMEM top address. If test fails, die().

Change-Id: I33d4153a5ce0908b8889517394afb46f1ca28f92
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31978
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
diff --git a/src/include/lib.h b/src/include/lib.h
index 3edc372..098d62d 100644
--- a/src/include/lib.h
+++ b/src/include/lib.h
@@ -24,10 +24,11 @@
 size_t ulzman(const void *src, size_t srcn, void *dst, size_t dstn);
 
 /* Defined in src/lib/ramtest.c */
+/* Assumption is 32-bit addressable UC memory. */
 void ram_check(unsigned long start, unsigned long stop);
 int ram_check_nodie(unsigned long start, unsigned long stop);
 int ram_check_noprint_nodie(unsigned long start, unsigned long stop);
-void quick_ram_check(void);
+void quick_ram_check_or_die(uintptr_t dst);
 
 /* Defined in primitive_memtest.c */
 int primitive_memtest(uintptr_t base, uintptr_t size);