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| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-02-16 14:57:06 -0600 |
|---|---|---|
| committer | Marc Jones <marc.jones@se-eng.com> | 2015-03-13 21:17:58 +0100 |
| commit | 586d6e2a8800f29cdfb6111a91d6e8fc8f4fc43c (patch) | |
| tree | 6411cb4093f6a7bb1fb2207b25350e37114b8374 /src/northbridge/amd/amdfam10 | |
| parent | 668828d3b3ffbe2891d6176379d990e99ae29be7 (diff) | |
| download | coreboot-586d6e2a8800f29cdfb6111a91d6e8fc8f4fc43c.tar.xz | |
northbridge/amd/amdht: Allow mainboards to set HT frequency limit
This is useful when the PCB layout of a mainboard does not allow
stable operation at the increased HyperTransport speeds of newer
processors.
Change-Id: Idc93a1294608178ddf38ca72d40e6bad7deb9004
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/8464
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Diffstat (limited to 'src/northbridge/amd/amdfam10')
| -rw-r--r-- | src/northbridge/amd/amdfam10/amdfam10.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/northbridge/amd/amdfam10/amdfam10.h b/src/northbridge/amd/amdfam10/amdfam10.h index 96f182da30..a77d036aa8 100644 --- a/src/northbridge/amd/amdfam10/amdfam10.h +++ b/src/northbridge/amd/amdfam10/amdfam10.h @@ -1,6 +1,7 @@ /* * 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 @@ -1002,6 +1003,10 @@ struct nodes_info_t { u32 up_planes; // down planes will be [up_planes, planes) } __attribute__((packed)); +struct ht_link_config { + uint8_t ht_speed_limit; // Speed in MHz; 0 for autodetect (default) +}; + /* be careful with the alignment of sysinfo, bacause sysinfo may be shared by coreboot_car and ramstage stage. and ramstage may be running at 64bit later.*/ struct sys_info { @@ -1015,6 +1020,8 @@ struct sys_info { u8 host_link_freq[NODE_NUMS*8]; // record freq for every link from cpu, 0x0f means don't need to touch it u16 host_link_freq_cap[NODE_NUMS*8]; //cap + struct ht_link_config ht_link_cfg; + u32 segbit; u32 sbdn; u32 sblk; |