Merge tag 'mips_5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS changes from Paul Burton:
 "Nothing too big or scary in here:

   - Support mremap() for the VDSO, primarily to allow CRIU to restore
     the VDSO to its checkpointed location.

   - Restore the MIPS32 cBPF JIT, after having reverted the enablement
     of the eBPF JIT for MIPS32 systems in the 5.5 cycle.

   - Improve cop0 counter synchronization behaviour whilst onlining CPUs
     by running with interrupts disabled.

   - Better match FPU behaviour when emulating multiply-accumulate
     instructions on pre-r6 systems that implement IEEE754-2008 style
     MACs.

   - Loongson64 kernels now build using the MIPS64r2 ISA, allowing them
     to take advantage of instructions introduced by r2.

   - Support for the Ingenic X1000 SoC & the really nice little CU Neo
     development board that's using it.

   - Support for WMAC on GARDENA Smart Gateway devices.

   - Lots of cleanup & refactoring of SGI IP27 (Origin 2*) support in
     preparation for introducing IP35 (Origin 3*) support.

   - Various Kconfig & Makefile cleanups"

* tag 'mips_5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (60 commits)
  MIPS: PCI: Add detection of IOC3 on IO7, IO8, IO9 and Fuel
  MIPS: Loongson64: Disable exec hazard
  MIPS: Loongson64: Bump ISA level to MIPSR2
  MIPS: Make DIEI support as a config option
  MIPS: OCTEON: octeon-irq: fix spelling mistake "to" -> "too"
  MIPS: asm: local: add barriers for Loongson
  MIPS: Loongson64: Select mac2008 only feature
  MIPS: Add MAC2008 Support
  Revert "MIPS: Add custom serial.h with BASE_BAUD override for generic kernel"
  MIPS: sort MIPS and MIPS_GENERIC Kconfig selects alphabetically (again)
  MIPS: make CPU_HAS_LOAD_STORE_LR opt-out
  MIPS: generic: don't unconditionally select PINCTRL
  MIPS: don't explicitly select LIBFDT in Kconfig
  MIPS: sync-r4k: do slave counter synchronization with disabled HW interrupts
  MIPS: SGI-IP30: Check for valid pointer before using it
  MIPS: syscalls: fix indentation of the 'SYSNR' message
  MIPS: boot: fix typo in 'vmlinux.lzma.its' target
  MIPS: fix indentation of the 'RELOCS' message
  dt-bindings: Document loongson vendor-prefix
  MIPS: CU1000-Neo: Refresh defconfig to support HWMON and WiFi.
  ...

1 files changed, 186 insertions, 0 deletions

diff --git a/arch/mips/include/asm/sn/sn0/kldir.h b/arch/mips/include/asm/sn/sn0/kldir.h
new file mode 100644
index 000000000000..1b10af6cbd5e
--- /dev/null
+++ b/arch/mips/include/asm/sn/sn0/kldir.h
@@ -0,0 +1,186 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Derived from IRIX <sys/SN/kldir.h>, revision 1.21.
+ *
+ * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
+ * Copyright (C) 1999, 2000 by Ralf Baechle
+ */
+#ifndef _ASM_SN_SN0_KLDIR_H
+#define _ASM_SN_SN0_KLDIR_H
+
+
+/*
+ * The kldir memory area resides at a fixed place in each node's memory and
+ * provides pointers to most other IP27 memory areas.  This allows us to
+ * resize and/or relocate memory areas at a later time without breaking all
+ * firmware and kernels that use them.	Indices in the array are
+ * permanently dedicated to areas listed below.	 Some memory areas (marked
+ * below) reside at a permanently fixed location, but are included in the
+ * directory for completeness.
+ */
+
+/*
+ * The upper portion of the memory map applies during boot
+ * only and is overwritten by IRIX/SYMMON.
+ *
+ *				      MEMORY MAP PER NODE
+ *
+ * 0x2000000 (32M)	   +-----------------------------------------+
+ *			   |	  IO6 BUFFERS FOR FLASH ENET IOC3    |
+ * 0x1F80000 (31.5M)	   +-----------------------------------------+
+ *			   |	  IO6 TEXT/DATA/BSS/stack	     |
+ * 0x1C00000 (30M)	   +-----------------------------------------+
+ *			   |	  IO6 PROM DEBUG TEXT/DATA/BSS/stack |
+ * 0x0800000 (28M)	   +-----------------------------------------+
+ *			   |	  IP27 PROM TEXT/DATA/BSS/stack	     |
+ * 0x1B00000 (27M)	   +-----------------------------------------+
+ *			   |	  IP27 CFG			     |
+ * 0x1A00000 (26M)	   +-----------------------------------------+
+ *			   |	  Graphics PROM			     |
+ * 0x1800000 (24M)	   +-----------------------------------------+
+ *			   |	  3rd Party PROM drivers	     |
+ * 0x1600000 (22M)	   +-----------------------------------------+
+ *			   |					     |
+ *			   |	  Free				     |
+ *			   |					     |
+ *			   +-----------------------------------------+
+ *			   |	  UNIX DEBUG Version		     |
+ * 0x190000 (2M--)	   +-----------------------------------------+
+ *			   |	  SYMMON			     |
+ *			   |	  (For UNIX Debug only)		     |
+ * 0x34000 (208K)	   +-----------------------------------------+
+ *			   |	  SYMMON STACK [NUM_CPU_PER_NODE]    |
+ *			   |	  (For UNIX Debug only)		     |
+ * 0x25000 (148K)	   +-----------------------------------------+
+ *			   |	  KLCONFIG - II (temp)		     |
+ *			   |					     |
+ *			   |	----------------------------	     |
+ *			   |					     |
+ *			   |	  UNIX NON-DEBUG Version	     |
+ * 0x19000 (100K)	   +-----------------------------------------+
+ *
+ *
+ * The lower portion of the memory map contains information that is
+ * permanent and is used by the IP27PROM, IO6PROM and IRIX.
+ *
+ * 0x19000 (100K)	   +-----------------------------------------+
+ *			   |					     |
+ *			   |	  PI Error Spools (32K)		     |
+ *			   |					     |
+ * 0x12000 (72K)	   +-----------------------------------------+
+ *			   |	  Unused			     |
+ * 0x11c00 (71K)	   +-----------------------------------------+
+ *			   |	  CPU 1 NMI Eframe area		     |
+ * 0x11a00 (70.5K)	   +-----------------------------------------+
+ *			   |	  CPU 0 NMI Eframe area		     |
+ * 0x11800 (70K)	   +-----------------------------------------+
+ *			   |	  CPU 1 NMI Register save area	     |
+ * 0x11600 (69.5K)	   +-----------------------------------------+
+ *			   |	  CPU 0 NMI Register save area	     |
+ * 0x11400 (69K)	   +-----------------------------------------+
+ *			   |	  GDA (1k)			     |
+ * 0x11000 (68K)	   +-----------------------------------------+
+ *			   |	  Early cache Exception stack	     |
+ *			   |		 and/or			     |
+ *			   |	  kernel/io6prom nmi registers	     |
+ * 0x10800  (66k)	   +-----------------------------------------+
+ *			   |	  cache error eframe		     |
+ * 0x10400 (65K)	   +-----------------------------------------+
+ *			   |	  Exception Handlers (UALIAS copy)   |
+ * 0x10000 (64K)	   +-----------------------------------------+
+ *			   |					     |
+ *			   |					     |
+ *			   |	  KLCONFIG - I (permanent) (48K)     |
+ *			   |					     |
+ *			   |					     |
+ *			   |					     |
+ * 0x4000 (16K)		   +-----------------------------------------+
+ *			   |	  NMI Handler (Protected Page)	     |
+ * 0x3000 (12K)		   +-----------------------------------------+
+ *			   |	  ARCS PVECTORS (master node only)   |
+ * 0x2c00 (11K)		   +-----------------------------------------+
+ *			   |	  ARCS TVECTORS (master node only)   |
+ * 0x2800 (10K)		   +-----------------------------------------+
+ *			   |	  LAUNCH [NUM_CPU]		     |
+ * 0x2400 (9K)		   +-----------------------------------------+
+ *			   |	  Low memory directory (KLDIR)	     |
+ * 0x2000 (8K)		   +-----------------------------------------+
+ *			   |	  ARCS SPB (1K)			     |
+ * 0x1000 (4K)		   +-----------------------------------------+
+ *			   |	  Early cache Exception stack	     |
+ *			   |		 and/or			     |
+ *			   |	  kernel/io6prom nmi registers	     |
+ * 0x800  (2k)		   +-----------------------------------------+
+ *			   |	  cache error eframe		     |
+ * 0x400 (1K)		   +-----------------------------------------+
+ *			   |	  Exception Handlers		     |
+ * 0x0	 (0K)		   +-----------------------------------------+
+ */
+
+/*
+ * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
+ * we define here.  Since it's set up in the prom.  We can't redefine it later
+ * and expect more space to be allocated.  The way to find out the true size
+ * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
+ * for a particular node.
+ */
+#define SYMMON_STACK_SIZE		0x8000
+
+#if defined(PROM)
+
+/*
+ * These defines are prom version dependent.  No code other than the IP27
+ * prom should attempt to use these values.
+ */
+#define IP27_LAUNCH_OFFSET		0x2400
+#define IP27_LAUNCH_SIZE		0x400
+#define IP27_LAUNCH_COUNT		2
+#define IP27_LAUNCH_STRIDE		0x200
+
+#define IP27_KLCONFIG_OFFSET		0x4000
+#define IP27_KLCONFIG_SIZE		0xc000
+#define IP27_KLCONFIG_COUNT		1
+#define IP27_KLCONFIG_STRIDE		0
+
+#define IP27_NMI_OFFSET			0x3000
+#define IP27_NMI_SIZE			0x40
+#define IP27_NMI_COUNT			2
+#define IP27_NMI_STRIDE			0x40
+
+#define IP27_PI_ERROR_OFFSET		0x12000
+#define IP27_PI_ERROR_SIZE		0x4000
+#define IP27_PI_ERROR_COUNT		1
+#define IP27_PI_ERROR_STRIDE		0
+
+#define IP27_SYMMON_STK_OFFSET		0x25000
+#define IP27_SYMMON_STK_SIZE		0xe000
+#define IP27_SYMMON_STK_COUNT		2
+/* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
+#define IP27_SYMMON_STK_STRIDE		0x7000
+
+#define IP27_FREEMEM_OFFSET		0x19000
+#define IP27_FREEMEM_SIZE		-1
+#define IP27_FREEMEM_COUNT		1
+#define IP27_FREEMEM_STRIDE		0
+
+#endif /* PROM */
+/*
+ * There will be only one of these in a partition so the IO6 must set it up.
+ */
+#define IO6_GDA_OFFSET			0x11000
+#define IO6_GDA_SIZE			0x400
+#define IO6_GDA_COUNT			1
+#define IO6_GDA_STRIDE			0
+
+/*
+ * save area of kernel nmi regs in the prom format
+ */
+#define IP27_NMI_KREGS_OFFSET		0x11400
+#define IP27_NMI_KREGS_CPU_SIZE		0x200
+/*
+ * save area of kernel nmi regs in eframe format
+ */
+#define IP27_NMI_EFRAME_OFFSET		0x11800
+#define IP27_NMI_EFRAME_SIZE		0x200
+
+#endif /* _ASM_SN_SN0_KLDIR_H */