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2017-10-16hdata/vpd: Rework vpd node creation logicVasant Hegde1-0/+1
Presently we traverse SLCA structure to create various FRU nodes under /vpd node. We assumed that children are always contiguous. It happened to be contiguous in P8 and worked fine, but failed in P9 system. So it ended up populating duplicate node under wrong parent. Also failed to populate some of the nodes. Unfortunately there is no way to reach all the children of a given parent from parent node :-( Hence we have to rework vpd creation logic. This patch goes through all the SLCA entries serially and creates vpd node. Assumptions: - SLCA index is always serial (0..n) - When we traverse serially parent entry comes before child - Redundant resources are always consecutive - Populate node if SLCA has 'installed' and 'VPD collected' bit set CC: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Reviewed-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-20core: POWER9 implement OPAL_SIGNAL_SYSTEM_RESETNicholas Piggin1-14/+0
This implements OPAL_SIGNAL_SYSTEM_RESET, using scom registers to quiesce the target thread and raise a system reset exception on it. It has been tested on DD2 with stop0 ESL=0 and ESL=1 shallow power saving modes. DD1 is not implemented because it is sufficiently different as to make support difficult. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [stewart@linux.vnet.ibm.com: fixup hdat_to_dt test] Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-15hdata: Parse NVLink informationOliver O'Halloran1-0/+3
Add the per-chip structures that descibe how the A-Bus/NVLink/OpenCAPI phy is configured. This generates the npu@xyz nodes for each chip on systems that support it. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-09-04hdata: Make vpd data parsing function globalVasant Hegde1-0/+2
Move VPD parsing code to separate function (vpd_data_parse()) and make it as global. So that we can call this function from other files. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-08-11hdat: Make is_power9n() globalMichael Neuling1-0/+16
This splits out is_power9n() so it can be used elsewhere. It also adds a check for for POWER9 so the function does more of what it's name suggests (and so the caller doesn't need to do it). Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-04-07hdat: parse processor attached i2c devicesOliver O'Halloran1-0/+2
Adds basic parsing for i2c devices that are attached to the processor I2C interfaces. This is mainly VPD SEEPROMs. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-03-07hdat: Parse BMC nodes much earlierOliver O'Halloran1-0/+1
This moves the parsing of the BMC and LPC details to the start of the HDAT parsing. This allows us to enable the Skiboot log console earlier so we can get debug output while parsing the rest of the HDAT. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2016-05-18hdata: Make hdata_to_dt more suitable for fuzzingStewart Smith1-1/+1
We make parse_hdat() return success/failure rather than assert. This allows the hdata_to_dt binary to gracefully error out rather than assert, which is useful when throwing it at a fuzzer. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-05-07FSP/hdata: Populate System Attention Indicator location codeVasant Hegde1-0/+1
On FSP based machine, FSP controls System Attention Indicator. This indicator detail (location code) is passed to OPAL via HDAT. OPAL can get/set this indicator via normal MBOX command. This patch takes care of parsing SLCA entry and populating device tree with SAI location code. Device Tree: We create '/ibm,opal/led' node which contains all location code LED information. 'led-types' property under each node tells LED type. For SAI indicator 'led-types' property will be 'attention'. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-11-18Remove useless global include memory.hBenjamin Herrenschmidt1-0/+1
It only exposed one function that is local to the hdat stuff Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-02Initial commit of Open Source releaseBenjamin Herrenschmidt1-0/+49
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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