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| author | Andrew Geissler <andrewg@us.ibm.com> | 2017-05-18 15:35:40 -0500 |
|---|---|---|
| committer | Andrew Geissler <andrewg@us.ibm.com> | 2017-06-01 18:35:52 -0500 |
| commit | 2548c7a35ab2ac8d8d73b8b8f5145d64f248ebe1 (patch) | |
| tree | f7e020ee7cbd6d42340d6a130f922c20e5f7c75f /procedures/p9 | |
| parent | 7ce535cb8cb9e98e64eb307d060e9a6ebf428116 (diff) | |
| download | openpower-proc-control-2548c7a35ab2ac8d8d73b8b8f5145d64f248ebe1.tar.gz openpower-proc-control-2548c7a35ab2ac8d8d73b8b8f5145d64f248ebe1.zip | |
Set SBE seeprom boot side
The default side for the SBE to boot from is side 0, which
is indicated by a 0 in bit 17 of cfam 0x2808.
When the boot count goes to 1 (the last before giving up), the
start_host logic will switch over to side 1 for the SBE to
boot from.
Resolves openbmc/openbmc#1467
Change-Id: I61aa22939baa4cde38c8716429b6ca55f7c850bd
Signed-off-by: Andrew Geissler <andrewg@us.ibm.com>
Diffstat (limited to 'procedures/p9')
| -rw-r--r-- | procedures/p9/start_host.cpp | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/procedures/p9/start_host.cpp b/procedures/p9/start_host.cpp index 6494086..3049eac 100644 --- a/procedures/p9/start_host.cpp +++ b/procedures/p9/start_host.cpp @@ -18,6 +18,7 @@ #include "p9_cfam.hpp" #include "registration.hpp" #include "targeting.hpp" +#include "ext_interface.hpp" namespace openpower { @@ -65,7 +66,25 @@ void startHost() //Kick off the SBE to start the boot - //First ensure ISTEP stepping isn't enabled + // Choose seeprom side to boot from + cfam_data_t sbeSide = 0; + if(getBootCount() > 1) + { + sbeSide = 0; + log<level::INFO>("Setting SBE seeprom side to 0", + entry("SBE_SIDE_SELECT=%d", 0)); + } + else + { + sbeSide = 0x00004000; + log<level::INFO>("Setting SBE seeprom side to 1", + entry("SBE_SIDE_SELECT=%d", 1)); + } + // Bit 17 of the ctrl status reg indicates sbe seeprom boot side + // 0 -> Side 0, 1 -> Side 1 + writeRegWithMask(master, P9_SBE_CTRL_STATUS, sbeSide, 0x00004000); + + //Ensure ISTEP stepping isn't enabled writeRegWithMask(master, P9_SCRATCH_REGISTER_8, 0x20000000, 0x20000000); //Start the SBE |
