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authorTimothy Pearson <tpearson@raptorengineeringinc.com>2015-03-13 12:48:31 -0500
committerKyösti Mälkki <kyosti.malkki@gmail.com>2015-03-17 04:33:06 +0100
commit49168805112d021f8715cab3abded8ab384860ac (patch)
treeda3eca2c996f7f552c0dd41a671a253f1a8fc680 /src/cpu
parent447240808c62cb877e343c40802a35d01ed198fb (diff)
downloadcoreboot-49168805112d021f8715cab3abded8ab384860ac.tar.xz
cpu/amd/model_10xxx: Move GFXUMA size calculation to separate function
This is required for early CBMEM support. Change-Id: I31d9b6a04ef963a7d3e045d9c5201ae64604218a Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-on: http://review.coreboot.org/8663 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'src/cpu')
-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
3 files changed, 70 insertions, 0 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