AMD Agesa and GFXUMA: drop use of uma_memory_base

Without GFXUMA, variables were not referenced anywhere.
Fail builds on Family10 if GFXUMA is selected, because the northbridge
code does not set UMA base or size.

Change-Id: I15b91cf6241e9a890398eed03824b753828a0a51
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/1247
Reviewed-by: Zheng Bao <zheng.bao@amd.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>

src/northbridge/amd/agesa/family10/northbridge.c

@@ -923,6 +923,10 @@ static void amdfam10_domain_set_resources(device_t dev)
 	u32 reset_memhole = 1;
 #endif
 
+#if CONFIG_GFXUMA
+#error Northbridge does not set uma_memory_base or uma_memory_size.
+#endif
+
 #if CONFIG_PCI_64BIT_PREF_MEM
 
 	for (link = dev->link_list; link; link = link->next) {

src/northbridge/amd/agesa/family12/northbridge.c

@@ -508,9 +508,6 @@ void setup_uma_memory(void)
         __func__, uma_memory_size, uma_memory_base);
 
   /* TODO: TOP_MEM2 */
-#else
-  uma_memory_size = 0x10000000; /* 256M recommended UMA */
-  uma_memory_base = 0x30000000; /* 1GB  system memory supported */
 #endif
 }
 

src/northbridge/amd/agesa/family14/northbridge.c

@@ -553,9 +553,6 @@ void setup_uma_memory(void)
 			__func__, uma_memory_size, uma_memory_base);
 
 	/* TODO: TOP_MEM2 */
-#else
-	uma_memory_size = 0x10000000;	/* 256M recommended UMA */
-	uma_memory_base = 0x30000000;	/* 1GB  system memory supported */
 #endif
 }
 

src/northbridge/amd/agesa/family15/northbridge.c

@@ -668,9 +668,6 @@ void setup_uma_memory(void)
 			__func__, uma_memory_size, uma_memory_base);
 
 	/* TODO: TOP_MEM2 */
-#else
-	uma_memory_size = 256 * ONE_MB; /* 256M recommended UMA */
-	uma_memory_base = 768 * ONE_MB; /* 1GB  system memory supported */
 #endif
 }
 

src/northbridge/amd/agesa/family15tn/northbridge.c

@@ -677,9 +677,6 @@ void setup_uma_memory(void)
 			__func__, uma_memory_size, uma_memory_base);
 
 	/* TODO: TOP_MEM2 */
-#else
-	uma_memory_size = 256 << ONE_MB_SHIFT; /* 256M recommended UMA */
-	uma_memory_base = 768 << ONE_MB_SHIFT; /* 1GB  system memory supported */
 #endif
 }