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2020-03-12Re-license IBM written files as Apache 2.0 OR GPLv2+Stewart Smith1-1/+1
SPDX makes it a simpler diff. I have audited the commit history of each file to ensure that they are exclusively authored by IBM and thus we have the right to relicense. The motivation behind this is twofold: 1) We want to enable experiments with coreboot, which is GPLv2 licensed 2) An upcoming firmware component wants to incorporate code from skiboot and code from the Linux kernel, which is GPLv2 licensed. I have gone through the IBM internal way of gaining approval for this. The following files are not exclusively authored by IBM, so are *not* included in this update (I will be seeking approval from contributors): core/direct-controls.c core/flash.c core/pcie-slot.c external/common/arch_flash_unknown.c external/common/rules.mk external/gard/Makefile external/gard/rules.mk external/opal-prd/Makefile external/pflash/Makefile external/xscom-utils/Makefile hdata/vpd.c hw/dts.c hw/ipmi/ipmi-watchdog.c hw/phb4.c include/cpu.h include/phb4.h include/platform.h libflash/libffs.c libstb/mbedtls/sha512.c libstb/mbedtls/sha512.h platforms/astbmc/barreleye.c platforms/astbmc/garrison.c platforms/astbmc/mihawk.c platforms/astbmc/nicole.c platforms/astbmc/p8dnu.c platforms/astbmc/p8dtu.c platforms/astbmc/p9dsu.c platforms/astbmc/vesnin.c platforms/rhesus/ec/config.h platforms/rhesus/ec/gpio.h platforms/rhesus/gpio.c platforms/rhesus/rhesus.c platforms/astbmc/talos.c platforms/astbmc/romulus.c Signed-off-by: Stewart Smith <stewart@linux.ibm.com> [oliver: fixed up the drift] Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-12-16fsp: endian conversionsNicholas Piggin1-9/+8
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-12-16opal-msg: endian fixes for opal-msg.c and opal_queue_msg callersNicholas Piggin1-1/+2
Reported-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-12-16opal-api: add endian conversions to most opal callsNicholas Piggin1-11/+14
This adds missing endian conversions to most calls, sufficient at least to handle calls from a kernel booting on mambo. Subsystems requiring more extensive changes (e.g., xive) will be done with individual changes. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2019-07-26SPDX-ify all skiboot codeStewart Smith1-13/+4
Use Software Package Data Exchange (SPDX) to indicate license for each file that is unique to skiboot. At the same time, ensure the (C) who and years are correct. See https://spdx.org/ Signed-off-by: Stewart Smith <stewart@linux.ibm.com> [oliver: Added a few missing files] Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
2017-06-14FSP/RTC: Remove local fsp_in_reset variableVasant Hegde1-10/+0
Now that we are using fsp_in_rr() to detect FSP reset/reload, fsp_in_reset become redundant. Lets remove this local variable. 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>
2017-06-14FSP/RTC: Fix possible FSP R/R issue in rtc write pathVasant Hegde1-9/+11
fsp_opal_rtc_write() checks FSP status before queueing message to FSP. But if FSP R/R starts before getting response to queued message then we will continue to return OPAL_BUSY_EVENT to host. In some extreme condition host may experience hang. Once FSP is back we will repost message, get response from FSP and return OPAL_SUCCES to host. This patch caches new values and returns OPAL_SUCCESS if FSP R/R is happening. And once FSP is back we will send cached value to FSP. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-14hw/fsp/rtc: read/write cached rtc tod on fsp hir.ppaidipe@linux.vnet.ibm.com1-2/+2
Currently fsp-rtc reads/writes the cached RTC TOD on an fsp reset. Use latest fsp_in_rr() function to properly read the cached rtc value when fsp reset initiated by the hir. Below is the kernel trace when we set hw clock, when hir process starts. [ 1727.775824] NMI watchdog: BUG: soft lockup - CPU#57 stuck for 23s! [hwclock:7688] [ 1727.775856] Modules linked in: vmx_crypto ibmpowernv ipmi_powernv uio_pdrv_genirq ipmi_devintf powernv_op_panel uio ipmi_msghandler powernv_rng leds_powernv ip_tables x_tables autofs4 ses enclosure scsi_transport_sas crc32c_vpmsum lpfc ipr tg3 scsi_transport_fc [ 1727.775883] CPU: 57 PID: 7688 Comm: hwclock Not tainted 4.10.0-14-generic #16-Ubuntu [ 1727.775883] task: c000000fdfdc8400 task.stack: c000000fdfef4000 [ 1727.775884] NIP: c00000000090540c LR: c0000000000846f4 CTR: 000000003006dd70 [ 1727.775885] REGS: c000000fdfef79a0 TRAP: 0901 Not tainted (4.10.0-14-generic) [ 1727.775886] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> [ 1727.775889] CR: 28024442 XER: 20000000 [ 1727.775890] CFAR: c00000000008472c SOFTE: 1 GPR00: 0000000030005128 c000000fdfef7c20 c00000000144c900 fffffffffffffff4 GPR04: 0000000028024442 c00000000090540c 9000000000009033 0000000000000000 GPR08: 0000000000000000 0000000031fc4000 c000000000084710 9000000000001003 GPR12: c0000000000846e8 c00000000fba0100 [ 1727.775897] NIP [c00000000090540c] opal_set_rtc_time+0x4c/0xb0 [ 1727.775899] LR [c0000000000846f4] opal_return+0xc/0x48 [ 1727.775899] Call Trace: [ 1727.775900] [c000000fdfef7c20] [c00000000090540c] opal_set_rtc_time+0x4c/0xb0 (unreliable) [ 1727.775901] [c000000fdfef7c60] [c000000000900828] rtc_set_time+0xb8/0x1b0 [ 1727.775903] [c000000fdfef7ca0] [c000000000902364] rtc_dev_ioctl+0x454/0x630 [ 1727.775904] [c000000fdfef7d40] [c00000000035b1f4] do_vfs_ioctl+0xd4/0x8c0 [ 1727.775906] [c000000fdfef7de0] [c00000000035bab4] SyS_ioctl+0xd4/0xf0 [ 1727.775907] [c000000fdfef7e30] [c00000000000b184] system_call+0x38/0xe0 [ 1727.775908] Instruction dump: [ 1727.775909] f821ffc1 39200000 7c832378 91210028 38a10020 39200000 38810028 f9210020 [ 1727.775911] 4bfffe6d e8810020 80610028 4b77f61d <60000000> 7c7f1b78 3860000a 2fbffff4 This is found when executing the testcase https://github.com/open-power/op-test-framework/blob/master/testcases/fspresetReload.py With this fix ran fsp hir torture testcase in the above test which is working fine. Signed-off-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com> Acked-by: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-06-08FSP/RTC: Improve error logVasant Hegde1-1/+1
.. it makes easy to differentiate errors. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2017-05-26fsp/tpo: Provide support for disabling TPO alarmVaibhav Jain1-2/+8
This patch adds support for disabling a preconfigured Timed-Power-On(TPO) alarm on FSP based systems. Presently once a TPO alarm is configured from the kernel it will be triggered even if its subsequently disabled. With this patch a TPO alarm can be disabled by passing y_m_d==hr_min==0 to fsp_opal_tpo_write(). A branch is added to the function to handle this case by sending FSP_CMD_TPO_DISABLE message to the FSP instead of usual FSP_CMD_TPO_WRITE message. The kernel is expected to call opal_tpo_write() with y_m_d==hr_min==0 to request opal to disable TPO alarm. Signed-off-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-11-18fsp/fsp-rtc: Correctly report back errors to hostStewart Smith1-4/+1
When we got FSP_STATUS_TOD_RESET or similar, we would return OPAL_BUSY which would cause the Linux OPAL RTC driver to retry in a loop until we didn't say we're busy. The problem with this is that some errors, such as FSP_STATUS_TOD_RESET are, in fact, permanent until we (say) set the time explicitly, so no matter how hard that little linux driver tries, it's never going to break out of that loop. This fix is to fix our use of the state machine introduced way back in 6cf8b663e7d7cb1e827b6d9c90e694ea583f6f87 so that we return an error code to linux. Reported-by: Cédric Le Goater <clg@fr.ibm.com> Fixes: 6cf8b663e7d7cb1e827b6d9c90e694ea583f6f87 Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com> Reviewed-by: Cédric Le Goater <clg@fr.ibm.com>
2015-07-31errorlog: Deprecate elog callback parameterSamuel Mendoza-Jonas1-4/+2
There are now no users of the call_out parameter and future users should use the log_append_msg() and log_append_data() functions, so remove all references to call_out. Signed-off-by: Samuel Mendoza-Jonas <sam.mj@au1.ibm.com> Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-03-10FSP/RTC: Check for TOD state in fsp_opal_rtc_readVasant Hegde1-11/+19
Check for TOD state before returning cached time in fsp_opal_rtc_read. Also improve error handling. Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-03-10fsp/rtc: Introduce the rtc write state machineNeelesh Gupta1-44/+74
Similar to rtc read requests, have a state machine to handle the write transitions. Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com> Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-03-10fsp/rtc: Rename the rtc_request_state to rtc_read_request_stateNeelesh Gupta1-19/+20
The rtc_request_state handles the state transition for rtc read requests only, so rtc_read_request_state is more appropriate name. Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com> Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-03-06Refactor fsp-rtc.c to not call fsp_sync_msg (and thus pollers) with lock heldStewart Smith1-83/+71
We introduce simple state machine, have liberal assert()s and very clearly indicate what's protected by the lock (everything). We also stop waiting for the initial RTC response on boot, which will ever so slightly speed up booting. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-03-05sparse: rtc_tod_state and rtc_tod_cache_dirty and be staticCédric Le Goater1-2/+2
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com> Acked-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-02-06Move skiboot internal things from opal.h to opal-api.hStewart Smith1-0/+1
This is probably not the best collection of things in the world, but it means that opal.h is much closer to being directly usable by an OS. This triggers a bunch of #include fixes throughout the tree. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-01-27Add extra debug/trace printouts to fsp-rtc.Stewart Smith1-2/+10
Has helped in debugging a RTC issue. Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2015-01-22rtc: rtc tod state need to be updated on successNeelesh Gupta1-0/+1
The OPAL rtc read interface currently fails as the tod state is not getting updated in the callback. The patch fixes this issue. Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-12-10RTC: Fix unused result warnings in RTC driverAnanth N Mavinakayanahalli1-2/+11
Fix Wunused-result Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-12-02elog: Clean up error logging headersAlistair Popple1-1/+1
Commit cf6f4e8912d29fb89ce85c84834607065ad595a5 introduced a platform independent frontend for error logging. However it failed to move the generic parts of the fsp-elog.h header into the platform independent one, instead relying on the fact that up until now fsp-elog.h was included whenever a function needed to log errors. This patch moves the platform independent defines into the frontend header file (errorlog.h) and removes the include of the platform specific header in generic code paths. Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-12-02rtc: Add a generic rtc cacheAlistair Popple1-55/+17
Some of the generic skiboot code needs access to the rtc (for example the pel logging code). Currently this is accessed via a call to fsp specific code which implements an rtc cache. Obviously this wont work on systems without a fsp. This patch makes the rtc cache generic so that we can get the time on other platforms (assuming they have some kind of rtc). Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-10-08Use prlog instead of DBG macros in hw/fsp/fsp-rtc.cStewart Smith1-16/+16
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
2014-08-15fsp/rtc: Use libc time functionsAlistair Popple1-147/+9
Our libc now has a proper implementation of mktime, which makes adding tm structures together easy. This patch makes the FSP RTC functions use the library functions and removes the generic time calculation code from the FSP RTC driver. The OPAL<->tm conversion functions are also made public as they will be useful for the IPMI RTC implementation. Signed-off-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-08-14fsp/fsp-rtc: Fix typo in 400-year calculation in tm_addJeremy Kerr1-1/+1
This chagne fixes a bug found by Alistair Popple: we have a stray '9' in the count of non-leap-years in 400 years. This will cause an incorrect result from tm_add if the TOD cache is >400 years old. Signed-off-by: Jeremy Kerr <jeremy.kerr@au.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-08-13fsp/rtc: Change properties used to advertize TPOBenjamin Herrenschmidt1-2/+1
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-08-13fsp/tpo: Enable Timed power on (TPO) supportMamatha Inamdar1-3/+142
This patch enabled TPO sequence handling in Sapphire. Timed power on notification comes from the user through set_poweron_time tool. After receiving a valid TPO from user, Sapphire sends a request to FSP through maibox command to set TPO. FSP will set TPO and power on the system as per the TPO set by the user. [ Removed global read_data, removed writing to NULL pointers, fixed a couple of memory leaks ... --BenH ] Signed-off-by: Mamatha Inamdar <mamatha4@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-07-02Initial commit of Open Source releaseBenjamin Herrenschmidt1-0/+572
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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