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author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-03-13 12:48:31 -0500 |
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committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2015-03-17 04:33:06 +0100 |
commit | 49168805112d021f8715cab3abded8ab384860ac (patch) | |
tree | da3eca2c996f7f552c0dd41a671a253f1a8fc680 /src/cpu | |
parent | 447240808c62cb877e343c40802a35d01ed198fb (diff) | |
download | coreboot-staging-49168805112d021f8715cab3abded8ab384860ac.zip coreboot-staging-49168805112d021f8715cab3abded8ab384860ac.tar.gz |
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.inc | 2 | ||||
-rw-r--r-- | src/cpu/amd/model_10xxx/ram_calc.c | 43 | ||||
-rw-r--r-- | src/cpu/amd/model_10xxx/ram_calc.h | 25 |
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 ba12dcd..c17e66c 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 0000000..98b80e9 --- /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 0000000..24c120c --- /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 |