OCC startup (istep 21.1) (#100)

* Add OCC operations

Signed-off-by: Igor Bagnucki <[email protected]>

* Beginning of istep 21.1

Change-Id: Ia342e6befc92c52dcced360dbc5c658ddf31d6b8
Signed-off-by: Sergii Dmytruk <[email protected]>

* Continue with start_pm_complex()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Finish with setup_memory_boot()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Implement special_wakeup_all(enable=false)

Signed-off-by: Sergii Dmytruk <[email protected]>

* pm_corequad_init()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Implement pstate_gpe_init()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Implement pm_pba_init()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Initialize MCS bits in configuration vector

Signed-off-by: Sergii Dmytruk <[email protected]>

* Implement wait_for_occ_checkpoint()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Implement poll_occ()

Signed-off-by: Sergii Dmytruk <[email protected]>

* The bulk of sending commands to OCC

Signed-off-by: Sergii Dmytruk <[email protected]>

* Finish implementing communication with OCC

Signed-off-by: Sergii Dmytruk <[email protected]>

* Implement switching OCC to active state

Signed-off-by: Sergii Dmytruk <[email protected]>

* Initialize user power limit (no limit)

Signed-off-by: Sergii Dmytruk <[email protected]>

* Start implementing send_occ_config_data()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Add PCAP config data

Signed-off-by: Sergii Dmytruk <[email protected]>

* Do not auto-start Pstate GPE protocol

Hostboot doesn't seem to do it and it times out anyway.

Signed-off-by: Sergii Dmytruk <[email protected]>

* Fix SCOM addrs in pba_slave_setup_runtime_phase()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Fix bugs on constructing bootcode for OCC

Signed-off-by: Sergii Dmytruk <[email protected]>

* Simplify pba_slave_setup_runtime_phase()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Fix stack usage errors

Signed-off-by: Sergii Dmytruk <[email protected]>

* Fix PPC_PLACE() macros in pb_pba_init()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Simplify pm_pba_bar_config()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Add pm_pss_init()

Signed-off-by: Sergii Dmytruk <[email protected]>

* pstate_gpe_init() fixes

Signed-off-by: Sergii Dmytruk <[email protected]>

* Fix wait_for_occ_checkpoint()

Signed-off-by: Sergii Dmytruk <[email protected]>

* Comments and formatting

Signed-off-by: Sergii Dmytruk <[email protected]>

* Bug fixes

Signed-off-by: Sergii Dmytruk <[email protected]>

* Pass APSS, MEMCFG and SYSCFG data to OCC

Signed-off-by: Sergii Dmytruk <[email protected]>

* The rest of configuration data

Signed-off-by: Sergii Dmytruk <[email protected]>

* Process OCC errors

Signed-off-by: Sergii Dmytruk <[email protected]>

* More error reporting

Signed-off-by: Sergii Dmytruk <[email protected]>

* Improve get_gpu_msg_data()

Signed-off-by: Sergii Dmytruk <[email protected]>

* istep 16.2

Change-Id: I082ed14d5c6f7fa26a6edefd6d73f725b0b36cd9
Signed-off-by: Sergii Dmytruk <[email protected]>

* Set error masks like Hostboot does

Signed-off-by: Sergii Dmytruk <[email protected]>

* Better logging

Signed-off-by: Sergii Dmytruk <[email protected]>

* Restart SGPE before starting OCC

Signed-off-by: Sergii Dmytruk <[email protected]>

* Don't add istep 16.2 here

Signed-off-by: Sergii Dmytruk <[email protected]>

* Remove SGPE reset code

It didn't work and this can be done differently.

Signed-off-by: Sergii Dmytruk <[email protected]>

* Start OCC in istep 15.4

This makes resetting it later unnecessary.

Signed-off-by: Sergii Dmytruk <[email protected]>

* Some code improvements

Signed-off-by: Sergii Dmytruk <[email protected]>

* Remove debug output

Signed-off-by: Sergii Dmytruk <[email protected]>

* Add informational messages

It takes some time to start OCC.

Change-Id: I1609349c673b4f0295e4e743add61f66a66aa6b1
Signed-off-by: Sergii Dmytruk <[email protected]>

* Formatting corrections for occ.h/occ.c

Change-Id: I56651886bc752ce9f17707ff0393abfdb65cb51d
Signed-off-by: Sergii Dmytruk <[email protected]>

* A couple of corrections

Change-Id: I4ab8a73cb73ccd486f08713920e8c389adff22b7
Signed-off-by: Sergii Dmytruk <[email protected]>

* Remove makeStart405Instruction() and related

Change-Id: I632fbad29216554ba44055ce803d912a4246da4c
Signed-off-by: Sergii Dmytruk <[email protected]>

* Extract ops.h

Change-Id: Ia3d53035ac34e64cd5c224e1423526990f62df06
Signed-off-by: Sergii Dmytruk <[email protected]>

* Move some OCC-specific code from homer.c to occ.c

Change-Id: Iebbba0ecaa235c37c70d182ec03022d852402971
Signed-off-by: Sergii Dmytruk <[email protected]>

* Update OP codes

Change-Id: Idfe51a377fd01d945ba888f4cc613742f067a955
Signed-off-by: Sergii Dmytruk <[email protected]>

* Fixes for sending wakeups

Change-Id: I5a011866c2453801a5e998fe87550b3e288f970d
Signed-off-by: Sergii Dmytruk <[email protected]>

* Don't set HOMER BAR second time

Signed-off-by: Sergii Dmytruk <[email protected]>

* Remove extra delay in check_ocb_mode()

Change-Id: I53c1c46492d57032d02bf3fc514933e4f4f50597
Signed-off-by: Sergii Dmytruk <[email protected]>

* Move ppc_* functions from occ.c to ops.h

Change-Id: Ic6ebdd8e6fa2f8347f60d6a2435ce7c4ef1eb19d
Signed-off-by: Sergii Dmytruk <[email protected]>

* Simplify special_occ_wakeup_disable()

Change-Id: I93427b99d18f3ca8b35c5cc9d0414a8d868f7f6d
Signed-off-by: Sergii Dmytruk <[email protected]>

* Comments and corrections for pm_pss_init()

Change-Id: I75a7bbf1474ffe556356f04e28d23bd47d14004f
Signed-off-by: Sergii Dmytruk <[email protected]>

* Remove duplicated pba slave setup

Change-Id: I8a634e023dd8cecfa771c68ebe5134c1d4acf04e
Signed-off-by: Sergii Dmytruk <[email protected]>

* Fix deadcode in write_occ_cmd()

Change-Id: Ia13098cedf6e68889a4152dfb616710aebb488d1
Signed-off-by: Sergii Dmytruk <[email protected]>

* Various review corrections

Change-Id: Ia70f487001b965648ec779353149f2c62f996670
Signed-off-by: Sergii Dmytruk <[email protected]>

* Compute SCOM values using PPC_* macros

Change-Id: I306de2b11cd98cc99c3262dc74dabcf8c22565d7
Signed-off-by: Sergii Dmytruk <[email protected]>

* Use correct PB freq in one more place

Change-Id: I212fec18384c81488b5f3de1631dda1df08248d0
Signed-off-by: Sergii Dmytruk <[email protected]>

* Initialize PBA slaves earlier (on PBA reset)

Change-Id: Ia0e991efe26b8abf6f020cb10eb82f951674e25b
Signed-off-by: Sergii Dmytruk <[email protected]>

* Add pm_occ_fir_init()

Change-Id: I483b9ce660a7d840a52437f1de0428df2ea84706
Signed-off-by: Sergii Dmytruk <[email protected]>

* Add pm_pba_fir_init()

Also fix a bug in pm_occ_fir_init() and move the two functions to a
separate file.

Change-Id: Idbbbe002ed673beaad18ccd144f193a290baf969
Signed-off-by: Sergii Dmytruk <[email protected]>

* Make SCOM writes match Hostboot

Signed-off-by: Sergii Dmytruk <[email protected]>

* Merge fir.c into occ.c

Change-Id: I3e60bd4b2299691cb18df98c218514671eb3a440
Signed-off-by: Sergii Dmytruk <[email protected]>

Co-authored-by: Igor Bagnucki <[email protected]>

src/include/cpu/power/mvpd.h

@@ -9,7 +9,7 @@
 /* Single bucket within #V keyword of version 3 */
 struct voltage_data
 {
-	uint16_t freq;
+	uint16_t freq;		// MHz
 	uint16_t vdd_voltage;
 	uint16_t idd_current;
 	uint16_t vcs_voltage;

src/include/cpu/power/occ.h

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef CPU_PPC64_OCC_H
+#define CPU_PPC64_OCC_H
+
+#include <stdint.h>
+
+void writeOCCSRAM(uint32_t address, uint64_t *buffer, size_t data_length);
+void readOCCSRAM(uint32_t address, uint64_t *buffer, size_t data_length);
+void write_occ_command(uint64_t write_data);
+void clear_occ_special_wakeups(uint64_t cores);
+void special_occ_wakeup_disable(uint64_t cores);
+void occ_start_from_mem(void);
+
+void pm_occ_fir_init(void);
+void pm_pba_fir_init(void);
+
+#endif /* CPU_PPC64_OCC_H */

src/soc/ibm/power9/Makefile.inc

@@ -41,5 +41,6 @@ ramstage-y += pstates.c
 ramstage-y += xive.c
 ramstage-y += int_vectors.S
 ramstage-y += i2c.c
+ramstage-y += occ.c
 
 endif