linux.git/arch/parisc/kernel/firmware.c, branch v5.6

parisc: add __pdc_cpu_rendezvous()

2019-09-08T13:19:58+00:00

When stopping SMP cpus send them into rendezvous, so we can
start them again later (when kexec'ing a new kernel).

Signed-off-by: Sven Schnelle 
Signed-off-by: Helge Deller

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

parisc: Use __ro_after_init in firmware.c

2019-05-10T19:00:44+00:00

Signed-off-by: Helge Deller

parisc: Show machine product number during boot

2019-02-21T19:37:13+00:00

Ask PDC firmware during boot for the original and current product
number as well as the serial number and show it (if available).

Signed-off-by: Helge Deller

parisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functions

2018-10-19T20:22:07+00:00

Add wrappers for the PDC_PAT_CELL_GET_INFO and
PDC_PAT_PD_GET_PDC_INTERF_REV PAT PDC subfunctions.

Both provide access to the PAT capability bitfield which can guide us if
simultaneous PTLBs are allowed on the bus, and if firmware will
rendezvous all processors within PDCE_Check in case of an HPMC.

Signed-off-by: Helge Deller

parisc: Add wrapper for pdc_instr() firmware function

2017-09-22T17:46:44+00:00

Signed-off-by: Helge Deller

parisc: Make existing core files reuseable for bootloader

2017-08-22T14:34:35+00:00

Signed-off-by: Helge Deller

parisc: PDT/firmware: Add support to read PDT on older PAT-machines

2017-08-22T14:34:33+00:00

Older machines with a PAT firmware (e.g. the rp5470) return their Page
Deallocation Table (PDT) info per cell via the PDC_PAT_MEM_PD_INFO PDC call.
This patch adds the necessary structures and wrappers to call firmware.

Signed-off-by: Helge Deller

parisc: Add function to return DIMM slot of physical address

2017-07-25T17:28:37+00:00

Add a firmware wrapper function, which asks PDC firmware for the DIMM slot of a
physical address. This is needed to show users which DIMM module needs
replacement in case a broken DIMM was encountered.

Signed-off-by: Helge Deller

parisc: Fix crash when calling PDC_PAT_MEM PDT firmware function

2017-07-25T16:24:39+00:00

Commit c9c2877d08d9 ("parisc: Add Page Deallocation Table (PDT) support")
introduced the pdc_pat_mem_read_pd_pdt() firmware helper function, which
crashed the system because it trashed the stack if the
pdc_pat_mem_read_pd_retinfo struct was located on the stack (and which is
in size less than the required 32 64-bit values).

Fix it by using the pdc_result struct instead when calling firmware and copy
the return values back into the result struct when finished sucessfully.

While debugging this code I noticed that the pdc_type wasn't set correctly
either, so let's fix that too.

Fixes: c9c2877d08d9 ("parisc: Add Page Deallocation Table (PDT) support")
Signed-off-by: Helge Deller