CBMEM AMD: Remove references to global high_tables_base

Prepare for removal of globals high_tables_base and _size
by replacing the references with a helper function.

Added set_top_of_ram_once() may be called several times,
but only the first call (with non-zero argument) takes effect.

Change-Id: I5b5f71630f03b6a01e9c8ff96cb78e9da03e5cc3
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3894
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@google.com>

6 files changed, 24 insertions, 93 deletions

diff --git a/src/northbridge/amd/agesa/family10/northbridge.c b/src/northbridge/amd/agesa/family10/northbridge.c
index ceb1d50dde..602d473d73 100644
--- a/src/northbridge/amd/agesa/family10/northbridge.c
+++ b/src/northbridge/amd/agesa/family10/northbridge.c
@@ -1036,17 +1036,11 @@ static void amdfam10_domain_set_resources(device_t dev)
 					ram_resource(dev, (idx | i), basek, pre_sizek);
 					idx += 0x10;
 					sizek -= pre_sizek;
-					if (high_tables_base==0) {
-					/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-						high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(uma_memory_base);
 #else
-						high_tables_base = (mmio_basek * 1024) - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(mmio_basek * 1024);
 #endif
-						high_tables_size = HIGH_MEMORY_SIZE;
-						printk(BIOS_DEBUG, " split: %dK table at =%08llx\n",
-							     (u32)(high_tables_size / 1024), high_tables_base);
-					}
 				}
 				basek = mmio_basek;
 			}
@@ -1063,15 +1057,11 @@ static void amdfam10_domain_set_resources(device_t dev)
 		idx += 0x10;
 		printk(BIOS_DEBUG, "node %d: mmio_basek=%08lx, basek=%08llx, limitk=%08llx\n",
 			     i, mmio_basek, basek, limitk);
-		if (high_tables_base==0) {
-		/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-			high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(uma_memory_base);
 #else
-			high_tables_base = (limitk * 1024) - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(limitk * 1024);
 #endif
-			high_tables_size = HIGH_MEMORY_SIZE;
-		}
 	}
 
 #if CONFIG_GFXUMA
diff --git a/src/northbridge/amd/agesa/family12/northbridge.c b/src/northbridge/amd/agesa/family12/northbridge.c
index 621246f9e5..4c230f1cf2 100644
--- a/src/northbridge/amd/agesa/family12/northbridge.c
+++ b/src/northbridge/amd/agesa/family12/northbridge.c
@@ -722,20 +722,12 @@ printk(BIOS_DEBUG, "adsr - 0xa0000 to 0xbffff resource.\n");
                     ram_resource(dev, idx, basek, pre_sizek);
                     idx += 0x10;
                     sizek -= pre_sizek;
-                    if (high_tables_base==0) {
-                    /* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-                        high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+                    set_top_of_ram_once(uma_memory_base);
 #else
-                        high_tables_base = (mmio_basek * 1024) - HIGH_MEMORY_SIZE;
+                    set_top_of_ram_once(mmio_basek * 1024);
 #endif
-                        high_tables_size = HIGH_MEMORY_SIZE;
-                        printk(BIOS_DEBUG, " split: %dK table at =%08llx\n",
-				 (u32)(high_tables_size / 1024),
-                                 high_tables_base);
-                    }
                 }
-
                 basek = mmio_basek;
             }
             if ((basek + sizek) <= 4*1024*1024) {
@@ -751,20 +743,13 @@ printk(BIOS_DEBUG, "adsr - 0xa0000 to 0xbffff resource.\n");
         idx += 0x10;
         printk(BIOS_DEBUG, "%d: mmio_basek=%08lx, basek=%08llx, limitk=%08llx\n",
                  0, mmio_basek, basek, limitk);
-        if (high_tables_base==0) {
-        /* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-            high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
-            printk(BIOS_DEBUG, "  adsr - uma_memory_base = %llx.\n", uma_memory_base);
+        set_top_of_ram_once(uma_memory_base);
 #else
-            high_tables_base = (limitk * 1024) - HIGH_MEMORY_SIZE;
+        set_top_of_ram_once(limitk * 1024);
 #endif
-            high_tables_size = HIGH_MEMORY_SIZE;
-        }
     }
 	printk(BIOS_DEBUG, "  adsr - mmio_basek = %lx.\n", mmio_basek);
-	printk(BIOS_DEBUG, "  adsr - high_tables_size = %llx.\n",
-		high_tables_size);
 
 #if CONFIG_GFXUMA
 	uma_resource(dev, 7, uma_memory_base >> 10, uma_memory_size >> 10);
diff --git a/src/northbridge/amd/agesa/family14/northbridge.c b/src/northbridge/amd/agesa/family14/northbridge.c
index e7de273a9d..fbf8e44064 100644
--- a/src/northbridge/amd/agesa/family14/northbridge.c
+++ b/src/northbridge/amd/agesa/family14/northbridge.c
@@ -716,19 +716,12 @@ static void domain_set_resources(device_t dev)
 						     pre_sizek);
 					idx += 0x10;
 					sizek -= pre_sizek;
-					if (high_tables_base == 0) {
-						/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-						high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(uma_memory_base);
 #else
-						high_tables_base = (mmio_basek * 1024) - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(mmio_basek * 1024);
 #endif
-						high_tables_size = HIGH_MEMORY_SIZE;
-						printk(BIOS_DEBUG, " split: %dK table at =%08llx\n",
-							 (u32)(high_tables_size / 1024), high_tables_base);
-					}
 				}
-
 				basek = mmio_basek;
 			}
 			if ((basek + sizek) <= 4 * 1024 * 1024) {
@@ -744,20 +737,13 @@ static void domain_set_resources(device_t dev)
 		printk(BIOS_DEBUG,
 			"%d: mmio_basek=%08lx, basek=%08llx, limitk=%08llx\n", 0,
 			 mmio_basek, basek, limitk);
-		if (high_tables_base == 0) {
-			/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-			high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
-			printk(BIOS_DEBUG, "  adsr - uma_memory_base = %llx.\n", uma_memory_base);
+		set_top_of_ram_once(uma_memory_base);
 #else
-			high_tables_base = (limitk * 1024) - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(limitk * 1024);
 #endif
-			high_tables_size = HIGH_MEMORY_SIZE;
-		}
 	}
 	printk(BIOS_DEBUG, "  adsr - mmio_basek = %lx.\n", mmio_basek);
-	printk(BIOS_DEBUG, "  adsr - high_tables_size = %llx.\n",
-		high_tables_size);
 
 #if CONFIG_GFXUMA
 	uma_resource(dev, 7, uma_memory_base >> 10, uma_memory_size >> 10);
diff --git a/src/northbridge/amd/agesa/family15/northbridge.c b/src/northbridge/amd/agesa/family15/northbridge.c
index 78e996608b..bdd69396bd 100644
--- a/src/northbridge/amd/agesa/family15/northbridge.c
+++ b/src/northbridge/amd/agesa/family15/northbridge.c
@@ -807,17 +807,11 @@ static void domain_set_resources(device_t dev)
 					ram_resource(dev, (idx | i), basek, pre_sizek);
 					idx += 0x10;
 					sizek -= pre_sizek;
-					if (high_tables_base==0) {
-						/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-						high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(uma_memory_base);
 #else
-						high_tables_base = (mmio_basek * 1024) - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(mmio_basek * 1024);
 #endif
-						high_tables_size = HIGH_MEMORY_SIZE;
-						printk(BIOS_DEBUG, " split: %dK table at =%08llx\n",
-							 (u32)(high_tables_size / 1024), high_tables_base);
-					}
 				}
 				basek = mmio_basek;
 			}
@@ -834,15 +828,11 @@ static void domain_set_resources(device_t dev)
 		idx += 0x10;
 		printk(BIOS_DEBUG, "node %d: mmio_basek=%08lx, basek=%08llx, limitk=%08llx\n",
 				i, mmio_basek, basek, limitk);
-		if (high_tables_base==0) {
-			/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-			high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(uma_memory_base);
 #else
-			high_tables_base = (limitk * 1024) - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(limitk * 1024);
 #endif
-			high_tables_size = HIGH_MEMORY_SIZE;
-		}
 	}
 
 #if CONFIG_GFXUMA
diff --git a/src/northbridge/amd/agesa/family15tn/northbridge.c b/src/northbridge/amd/agesa/family15tn/northbridge.c
index 0a69ad81e6..736e634899 100644
--- a/src/northbridge/amd/agesa/family15tn/northbridge.c
+++ b/src/northbridge/amd/agesa/family15tn/northbridge.c
@@ -793,17 +793,11 @@ static void domain_set_resources(device_t dev)
 					ram_resource(dev, (idx | i), basek, pre_sizek);
 					idx += 0x10;
 					sizek -= pre_sizek;
-					if (high_tables_base==0) {
-						/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-						high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(uma_memory_base);
 #else
-						high_tables_base = (mmio_basek * 1024) - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(mmio_basek * 1024);
 #endif
-						high_tables_size = HIGH_MEMORY_SIZE;
-						printk(BIOS_DEBUG, " split: %dK table at =%08llx\n",
-							 (u32)(high_tables_size / 1024), high_tables_base);
-					}
 				}
 				basek = mmio_basek;
 			}
@@ -821,15 +815,11 @@ static void domain_set_resources(device_t dev)
 		idx += 0x10;
 		printk(BIOS_DEBUG, "node %d: mmio_basek=%08lx, basek=%08llx, limitk=%08llx\n",
 				i, mmio_basek, basek, limitk);
-		if (high_tables_base==0) {
-			/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-			high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(uma_memory_base);
 #else
-			high_tables_base = (limitk * 1024) - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(limitk * 1024);
 #endif
-			high_tables_size = HIGH_MEMORY_SIZE;
-		}
 	}
 
 #if CONFIG_GFXUMA
diff --git a/src/northbridge/amd/agesa/family16kb/northbridge.c b/src/northbridge/amd/agesa/family16kb/northbridge.c
index c27a1b2814..266319cef6 100644
--- a/src/northbridge/amd/agesa/family16kb/northbridge.c
+++ b/src/northbridge/amd/agesa/family16kb/northbridge.c
@@ -799,17 +799,11 @@ static void domain_set_resources(device_t dev)
 					ram_resource(dev, (idx | i), basek, pre_sizek);
 					idx += 0x10;
 					sizek -= pre_sizek;
-					if (high_tables_base==0) {
-						/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-						high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(uma_memory_base);
 #else
-						high_tables_base = (mmio_basek * 1024) - HIGH_MEMORY_SIZE;
+					set_top_of_ram_once(mmio_basek * 1024);
 #endif
-						high_tables_size = HIGH_MEMORY_SIZE;
-						printk(BIOS_DEBUG, " split: %dK table at =%08llx\n",
-							 (u32)(high_tables_size / 1024), high_tables_base);
-					}
 				}
 				basek = mmio_basek;
 			}
@@ -827,15 +821,11 @@ static void domain_set_resources(device_t dev)
 		idx += 0x10;
 		printk(BIOS_DEBUG, "node %d: mmio_basek=%08lx, basek=%08llx, limitk=%08llx\n",
 				i, mmio_basek, basek, limitk);
-		if (high_tables_base==0) {
-			/* Leave some space for ACPI, PIRQ and MP tables */
 #if CONFIG_GFXUMA
-			high_tables_base = uma_memory_base - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(uma_memory_base);
 #else
-			high_tables_base = (limitk * 1024) - HIGH_MEMORY_SIZE;
+		set_top_of_ram_once(limitk * 1024);
 #endif
-			high_tables_size = HIGH_MEMORY_SIZE;
-		}
 	}
 
 #if CONFIG_GFXUMA