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| author | Michael Neuling <mikey@neuling.org> | 2017-03-28 17:14:56 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-03-29 17:26:33 +1100 |
| commit | 6b464ef731a89664519cfa8986425246dc7766fb (patch) | |
| tree | d3259c86be6993aa0abac151bc2b653daacbaa98 /include | |
| parent | 7a7a1ba30dd1153d623ea021eadec4f561f507d9 (diff) | |
| download | skiboot-6b464ef731a89664519cfa8986425246dc7766fb.zip skiboot-6b464ef731a89664519cfa8986425246dc7766fb.tar.gz skiboot-6b464ef731a89664519cfa8986425246dc7766fb.tar.bz2 | |
phb3/4: Set max link speed via nvram
This adds an nvram parameter pcie-max-link-speed to configure the max
speed of the pcie link. This can be set from the petitboot prompt
using:
nvram -p ibm,skiboot --update-config pcie-max-link-speed=4
This takes preference over anything set in the device tree and is
global to all PHBs.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/skiboot.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/skiboot.h b/include/skiboot.h index bb0a7b5..c55995b 100644 --- a/include/skiboot.h +++ b/include/skiboot.h @@ -132,6 +132,8 @@ enum proc_gen { }; extern enum proc_gen proc_gen; +extern unsigned int pcie_max_link_speed; + /* Convert a 4-bit number to a hex char */ extern char __attrconst tohex(uint8_t nibble); |