summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--src/cpu/amd/model_10xxx/Makefile.inc2
-rw-r--r--src/cpu/amd/model_10xxx/ram_calc.c43
-rw-r--r--src/cpu/amd/model_10xxx/ram_calc.h25
-rw-r--r--src/northbridge/amd/amdfam10/northbridge.c17
4 files changed, 72 insertions, 15 deletions
diff --git a/src/cpu/amd/model_10xxx/Makefile.inc b/src/cpu/amd/model_10xxx/Makefile.inc
index ba12dcd3ef..c17e66c6c2 100644
--- a/src/cpu/amd/model_10xxx/Makefile.inc
+++ b/src/cpu/amd/model_10xxx/Makefile.inc
@@ -3,6 +3,8 @@ ramstage-y += model_10xxx_init.c
ramstage-y += processor_name.c
romstage-y += update_microcode.c
+romstage-y += ram_calc.c
+ramstage-y += ram_calc.c
ramstage-y += monotonic_timer.c
ramstage-$(CONFIG_HAVE_ACPI_TABLES) += powernow_acpi.c
diff --git a/src/cpu/amd/model_10xxx/ram_calc.c b/src/cpu/amd/model_10xxx/ram_calc.c
new file mode 100644
index 0000000000..98b80e96b9
--- /dev/null
+++ b/src/cpu/amd/model_10xxx/ram_calc.c
@@ -0,0 +1,43 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ * Copyright (C) 2007 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <cpu/cpu.h>
+#include <cpu/x86/msr.h>
+#include <cpu/amd/mtrr.h>
+
+#include "ram_calc.h"
+
+uint64_t get_uma_memory_size(uint64_t topmem)
+{
+ uint64_t uma_size = 0;
+ if (IS_ENABLED(CONFIG_GFXUMA)) {
+ /* refer to UMA Size Consideration in 780 BDG. */
+ if (topmem > 0x40000000) /* 1GB and above system memory */
+ uma_size = 0x10000000; /* 256M recommended UMA */
+
+ else if (topmem > 0x20000000) /* 512M - 1023M system memory */
+ uma_size = 0x8000000; /* 128M recommended UMA */
+
+ else if (topmem > 0x10000000) /* 256M - 511M system memory */
+ uma_size = 0x4000000; /* 64M recommended UMA */
+ }
+
+ return uma_size;
+}
diff --git a/src/cpu/amd/model_10xxx/ram_calc.h b/src/cpu/amd/model_10xxx/ram_calc.h
new file mode 100644
index 0000000000..24c120ca5a
--- /dev/null
+++ b/src/cpu/amd/model_10xxx/ram_calc.h
@@ -0,0 +1,25 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _AMD_MODEL_10XXX_RAM_CALC_H_
+#define _AMD_MODEL_10XXX_RAM_CALC_H_
+
+uint64_t get_uma_memory_size(uint64_t topmem);
+
+#endif
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c
index 5ce7ae66d7..e2b144126b 100644
--- a/src/northbridge/amd/amdfam10/northbridge.c
+++ b/src/northbridge/amd/amdfam10/northbridge.c
@@ -33,6 +33,7 @@
#include <cpu/x86/lapic.h>
#include <cpu/amd/mtrr.h>
#include <cpu/amd/amdfam10_sysconf.h>
+#include <cpu/amd/model_10xxx/ram_calc.h>
#if CONFIG_LOGICAL_CPUS
#include <cpu/amd/multicore.h>
@@ -740,21 +741,7 @@ static void setup_uma_memory(void)
{
#if CONFIG_GFXUMA
uint32_t topmem = (uint32_t) bsp_topmem();
- /* refer to UMA Size Consideration in 780 BDG. */
- switch (topmem) {
- case 0x10000000: /* 256M system memory */
- uma_memory_size = 0x4000000; /* 64M recommended UMA */
- break;
-
- case 0x20000000: /* 512M system memory */
- uma_memory_size = 0x8000000; /* 128M recommended UMA */
- break;
-
- default: /* 1GB and above system memory */
- uma_memory_size = 0x10000000; /* 256M recommended UMA */
- break;
- }
-
+ uma_memory_size = get_uma_memory_size(topmem);
uma_memory_base = topmem - uma_memory_size; /* TOP_MEM1 */
printk(BIOS_INFO, "%s: uma size 0x%08llx, memory start 0x%08llx\n",
__func__, uma_memory_size, uma_memory_base);