Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 711 insertions, 0 deletions

diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c
new file mode 100644
index 000000000..48abee4ee
--- /dev/null
+++ b/arch/sparc/kernel/setup_64.c
@@ -0,0 +1,711 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *  linux/arch/sparc64/kernel/setup.c
+ *
+ *  Copyright (C) 1995,1996  David S. Miller (davem@caip.rutgers.edu)
+ *  Copyright (C) 1997       Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <asm/smp.h>
+#include <linux/user.h>
+#include <linux/screen_info.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/seq_file.h>
+#include <linux/syscalls.h>
+#include <linux/kdev_t.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/inet.h>
+#include <linux/console.h>
+#include <linux/root_dev.h>
+#include <linux/interrupt.h>
+#include <linux/cpu.h>
+#include <linux/initrd.h>
+#include <linux/module.h>
+#include <linux/start_kernel.h>
+#include <linux/memblock.h>
+#include <uapi/linux/mount.h>
+
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/oplib.h>
+#include <asm/page.h>
+#include <asm/idprom.h>
+#include <asm/head.h>
+#include <asm/starfire.h>
+#include <asm/mmu_context.h>
+#include <asm/timer.h>
+#include <asm/sections.h>
+#include <asm/setup.h>
+#include <asm/mmu.h>
+#include <asm/ns87303.h>
+#include <asm/btext.h>
+#include <asm/elf.h>
+#include <asm/mdesc.h>
+#include <asm/cacheflush.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+
+#ifdef CONFIG_IP_PNP
+#include <net/ipconfig.h>
+#endif
+
+#include "entry.h"
+#include "kernel.h"
+
+/* Used to synchronize accesses to NatSemi SUPER I/O chip configure
+ * operations in asm/ns87303.h
+ */
+DEFINE_SPINLOCK(ns87303_lock);
+EXPORT_SYMBOL(ns87303_lock);
+
+struct screen_info screen_info = {
+	0, 0,			/* orig-x, orig-y */
+	0,			/* unused */
+	0,			/* orig-video-page */
+	0,			/* orig-video-mode */
+	128,			/* orig-video-cols */
+	0, 0, 0,		/* unused, ega_bx, unused */
+	54,			/* orig-video-lines */
+	0,                      /* orig-video-isVGA */
+	16                      /* orig-video-points */
+};
+
+static void
+prom_console_write(struct console *con, const char *s, unsigned int n)
+{
+	prom_write(s, n);
+}
+
+/* Exported for mm/init.c:paging_init. */
+unsigned long cmdline_memory_size = 0;
+
+static struct console prom_early_console = {
+	.name =		"earlyprom",
+	.write =	prom_console_write,
+	.flags =	CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,
+	.index =	-1,
+};
+
+/*
+ * Process kernel command line switches that are specific to the
+ * SPARC or that require special low-level processing.
+ */
+static void __init process_switch(char c)
+{
+	switch (c) {
+	case 'd':
+	case 's':
+		break;
+	case 'h':
+		prom_printf("boot_flags_init: Halt!\n");
+		prom_halt();
+		break;
+	case 'p':
+		prom_early_console.flags &= ~CON_BOOT;
+		break;
+	case 'P':
+		/* Force UltraSPARC-III P-Cache on. */
+		if (tlb_type != cheetah) {
+			printk("BOOT: Ignoring P-Cache force option.\n");
+			break;
+		}
+		cheetah_pcache_forced_on = 1;
+		add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
+		cheetah_enable_pcache();
+		break;
+
+	default:
+		printk("Unknown boot switch (-%c)\n", c);
+		break;
+	}
+}
+
+static void __init boot_flags_init(char *commands)
+{
+	while (*commands) {
+		/* Move to the start of the next "argument". */
+		while (*commands == ' ')
+			commands++;
+
+		/* Process any command switches, otherwise skip it. */
+		if (*commands == '\0')
+			break;
+		if (*commands == '-') {
+			commands++;
+			while (*commands && *commands != ' ')
+				process_switch(*commands++);
+			continue;
+		}
+		if (!strncmp(commands, "mem=", 4))
+			cmdline_memory_size = memparse(commands + 4, &commands);
+
+		while (*commands && *commands != ' ')
+			commands++;
+	}
+}
+
+extern unsigned short root_flags;
+extern unsigned short root_dev;
+extern unsigned short ram_flags;
+#define RAMDISK_IMAGE_START_MASK	0x07FF
+#define RAMDISK_PROMPT_FLAG		0x8000
+#define RAMDISK_LOAD_FLAG		0x4000
+
+extern int root_mountflags;
+
+char reboot_command[COMMAND_LINE_SIZE];
+
+static void __init per_cpu_patch(void)
+{
+	struct cpuid_patch_entry *p;
+	unsigned long ver;
+	int is_jbus;
+
+	if (tlb_type == spitfire && !this_is_starfire)
+		return;
+
+	is_jbus = 0;
+	if (tlb_type != hypervisor) {
+		__asm__ ("rdpr %%ver, %0" : "=r" (ver));
+		is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
+			   (ver >> 32UL) == __SERRANO_ID);
+	}
+
+	p = &__cpuid_patch;
+	while (p < &__cpuid_patch_end) {
+		unsigned long addr = p->addr;
+		unsigned int *insns;
+
+		switch (tlb_type) {
+		case spitfire:
+			insns = &p->starfire[0];
+			break;
+		case cheetah:
+		case cheetah_plus:
+			if (is_jbus)
+				insns = &p->cheetah_jbus[0];
+			else
+				insns = &p->cheetah_safari[0];
+			break;
+		case hypervisor:
+			insns = &p->sun4v[0];
+			break;
+		default:
+			prom_printf("Unknown cpu type, halting.\n");
+			prom_halt();
+		}
+
+		*(unsigned int *) (addr +  0) = insns[0];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));
+
+		*(unsigned int *) (addr +  4) = insns[1];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  4));
+
+		*(unsigned int *) (addr +  8) = insns[2];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  8));
+
+		*(unsigned int *) (addr + 12) = insns[3];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr + 12));
+
+		p++;
+	}
+}
+
+void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *start,
+			     struct sun4v_1insn_patch_entry *end)
+{
+	while (start < end) {
+		unsigned long addr = start->addr;
+
+		*(unsigned int *) (addr +  0) = start->insn;
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));
+
+		start++;
+	}
+}
+
+void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start,
+			     struct sun4v_2insn_patch_entry *end)
+{
+	while (start < end) {
+		unsigned long addr = start->addr;
+
+		*(unsigned int *) (addr +  0) = start->insns[0];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));
+
+		*(unsigned int *) (addr +  4) = start->insns[1];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  4));
+
+		start++;
+	}
+}
+
+void sun_m7_patch_2insn_range(struct sun4v_2insn_patch_entry *start,
+			     struct sun4v_2insn_patch_entry *end)
+{
+	while (start < end) {
+		unsigned long addr = start->addr;
+
+		*(unsigned int *) (addr +  0) = start->insns[0];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));
+
+		*(unsigned int *) (addr +  4) = start->insns[1];
+		wmb();
+		__asm__ __volatile__("flush	%0" : : "r" (addr +  4));
+
+		start++;
+	}
+}
+
+static void __init sun4v_patch(void)
+{
+	extern void sun4v_hvapi_init(void);
+
+	if (tlb_type != hypervisor)
+		return;
+
+	sun4v_patch_1insn_range(&__sun4v_1insn_patch,
+				&__sun4v_1insn_patch_end);
+
+	sun4v_patch_2insn_range(&__sun4v_2insn_patch,
+				&__sun4v_2insn_patch_end);
+
+	switch (sun4v_chip_type) {
+	case SUN4V_CHIP_SPARC_M7:
+	case SUN4V_CHIP_SPARC_M8:
+	case SUN4V_CHIP_SPARC_SN:
+		sun4v_patch_1insn_range(&__sun_m7_1insn_patch,
+					&__sun_m7_1insn_patch_end);
+		sun_m7_patch_2insn_range(&__sun_m7_2insn_patch,
+					 &__sun_m7_2insn_patch_end);
+		break;
+	default:
+		break;
+	}
+
+	if (sun4v_chip_type != SUN4V_CHIP_NIAGARA1) {
+		sun4v_patch_1insn_range(&__fast_win_ctrl_1insn_patch,
+					&__fast_win_ctrl_1insn_patch_end);
+	}
+
+	sun4v_hvapi_init();
+}
+
+static void __init popc_patch(void)
+{
+	struct popc_3insn_patch_entry *p3;
+	struct popc_6insn_patch_entry *p6;
+
+	p3 = &__popc_3insn_patch;
+	while (p3 < &__popc_3insn_patch_end) {
+		unsigned long i, addr = p3->addr;
+
+		for (i = 0; i < 3; i++) {
+			*(unsigned int *) (addr +  (i * 4)) = p3->insns[i];
+			wmb();
+			__asm__ __volatile__("flush	%0"
+					     : : "r" (addr +  (i * 4)));
+		}
+
+		p3++;
+	}
+
+	p6 = &__popc_6insn_patch;
+	while (p6 < &__popc_6insn_patch_end) {
+		unsigned long i, addr = p6->addr;
+
+		for (i = 0; i < 6; i++) {
+			*(unsigned int *) (addr +  (i * 4)) = p6->insns[i];
+			wmb();
+			__asm__ __volatile__("flush	%0"
+					     : : "r" (addr +  (i * 4)));
+		}
+
+		p6++;
+	}
+}
+
+static void __init pause_patch(void)
+{
+	struct pause_patch_entry *p;
+
+	p = &__pause_3insn_patch;
+	while (p < &__pause_3insn_patch_end) {
+		unsigned long i, addr = p->addr;
+
+		for (i = 0; i < 3; i++) {
+			*(unsigned int *) (addr +  (i * 4)) = p->insns[i];
+			wmb();
+			__asm__ __volatile__("flush	%0"
+					     : : "r" (addr +  (i * 4)));
+		}
+
+		p++;
+	}
+}
+
+void __init start_early_boot(void)
+{
+	int cpu;
+
+	check_if_starfire();
+	per_cpu_patch();
+	sun4v_patch();
+	smp_init_cpu_poke();
+
+	cpu = hard_smp_processor_id();
+	if (cpu >= NR_CPUS) {
+		prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
+			    cpu, NR_CPUS);
+		prom_halt();
+	}
+	current_thread_info()->cpu = cpu;
+
+	time_init_early();
+	prom_init_report();
+	start_kernel();
+}
+
+/* On Ultra, we support all of the v8 capabilities. */
+unsigned long sparc64_elf_hwcap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR |
+				   HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV |
+				   HWCAP_SPARC_V9);
+EXPORT_SYMBOL(sparc64_elf_hwcap);
+
+static const char *hwcaps[] = {
+	"flush", "stbar", "swap", "muldiv", "v9",
+	"ultra3", "blkinit", "n2",
+
+	/* These strings are as they appear in the machine description
+	 * 'hwcap-list' property for cpu nodes.
+	 */
+	"mul32", "div32", "fsmuld", "v8plus", "popc", "vis", "vis2",
+	"ASIBlkInit", "fmaf", "vis3", "hpc", "random", "trans", "fjfmau",
+	"ima", "cspare", "pause", "cbcond", NULL /*reserved for crypto */,
+	"adp",
+};
+
+static const char *crypto_hwcaps[] = {
+	"aes", "des", "kasumi", "camellia", "md5", "sha1", "sha256",
+	"sha512", "mpmul", "montmul", "montsqr", "crc32c",
+};
+
+void cpucap_info(struct seq_file *m)
+{
+	unsigned long caps = sparc64_elf_hwcap;
+	int i, printed = 0;
+
+	seq_puts(m, "cpucaps\t\t: ");
+	for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
+		unsigned long bit = 1UL << i;
+		if (hwcaps[i] && (caps & bit)) {
+			seq_printf(m, "%s%s",
+				   printed ? "," : "", hwcaps[i]);
+			printed++;
+		}
+	}
+	if (caps & HWCAP_SPARC_CRYPTO) {
+		unsigned long cfr;
+
+		__asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
+		for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
+			unsigned long bit = 1UL << i;
+			if (cfr & bit) {
+				seq_printf(m, "%s%s",
+					   printed ? "," : "", crypto_hwcaps[i]);
+				printed++;
+			}
+		}
+	}
+	seq_putc(m, '\n');
+}
+
+static void __init report_one_hwcap(int *printed, const char *name)
+{
+	if ((*printed) == 0)
+		printk(KERN_INFO "CPU CAPS: [");
+	printk(KERN_CONT "%s%s",
+	       (*printed) ? "," : "", name);
+	if (++(*printed) == 8) {
+		printk(KERN_CONT "]\n");
+		*printed = 0;
+	}
+}
+
+static void __init report_crypto_hwcaps(int *printed)
+{
+	unsigned long cfr;
+	int i;
+
+	__asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
+
+	for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
+		unsigned long bit = 1UL << i;
+		if (cfr & bit)
+			report_one_hwcap(printed, crypto_hwcaps[i]);
+	}
+}
+
+static void __init report_hwcaps(unsigned long caps)
+{
+	int i, printed = 0;
+
+	for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
+		unsigned long bit = 1UL << i;
+		if (hwcaps[i] && (caps & bit))
+			report_one_hwcap(&printed, hwcaps[i]);
+	}
+	if (caps & HWCAP_SPARC_CRYPTO)
+		report_crypto_hwcaps(&printed);
+	if (printed != 0)
+		printk(KERN_CONT "]\n");
+}
+
+static unsigned long __init mdesc_cpu_hwcap_list(void)
+{
+	struct mdesc_handle *hp;
+	unsigned long caps = 0;
+	const char *prop;
+	int len;
+	u64 pn;
+
+	hp = mdesc_grab();
+	if (!hp)
+		return 0;
+
+	pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "cpu");
+	if (pn == MDESC_NODE_NULL)
+		goto out;
+
+	prop = mdesc_get_property(hp, pn, "hwcap-list", &len);
+	if (!prop)
+		goto out;
+
+	while (len) {
+		int i, plen;
+
+		for (i = 0; i < ARRAY_SIZE(hwcaps); i++) {
+			unsigned long bit = 1UL << i;
+
+			if (hwcaps[i] && !strcmp(prop, hwcaps[i])) {
+				caps |= bit;
+				break;
+			}
+		}
+		for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) {
+			if (!strcmp(prop, crypto_hwcaps[i]))
+				caps |= HWCAP_SPARC_CRYPTO;
+		}
+
+		plen = strlen(prop) + 1;
+		prop += plen;
+		len -= plen;
+	}
+
+out:
+	mdesc_release(hp);
+	return caps;
+}
+
+/* This yields a mask that user programs can use to figure out what
+ * instruction set this cpu supports.
+ */
+static void __init init_sparc64_elf_hwcap(void)
+{
+	unsigned long cap = sparc64_elf_hwcap;
+	unsigned long mdesc_caps;
+
+	if (tlb_type == cheetah || tlb_type == cheetah_plus)
+		cap |= HWCAP_SPARC_ULTRA3;
+	else if (tlb_type == hypervisor) {
+		if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 ||
+		    sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
+		    sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
+		    sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
+		    sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC_M8 ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC64X)
+			cap |= HWCAP_SPARC_BLKINIT;
+		if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
+		    sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
+		    sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
+		    sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC_M8 ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
+		    sun4v_chip_type == SUN4V_CHIP_SPARC64X)
+			cap |= HWCAP_SPARC_N2;
+	}
+
+	cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 | AV_SPARC_V8PLUS);
+
+	mdesc_caps = mdesc_cpu_hwcap_list();
+	if (!mdesc_caps) {
+		if (tlb_type == spitfire)
+			cap |= AV_SPARC_VIS;
+		if (tlb_type == cheetah || tlb_type == cheetah_plus)
+			cap |= AV_SPARC_VIS | AV_SPARC_VIS2;
+		if (tlb_type == cheetah_plus) {
+			unsigned long impl, ver;
+
+			__asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
+			impl = ((ver >> 32) & 0xffff);
+			if (impl == PANTHER_IMPL)
+				cap |= AV_SPARC_POPC;
+		}
+		if (tlb_type == hypervisor) {
+			if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1)
+				cap |= AV_SPARC_ASI_BLK_INIT;
+			if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 ||
+			    sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
+			    sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
+			    sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC_M8 ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC64X)
+				cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 |
+					AV_SPARC_ASI_BLK_INIT |
+					AV_SPARC_POPC);
+			if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 ||
+			    sun4v_chip_type == SUN4V_CHIP_NIAGARA4 ||
+			    sun4v_chip_type == SUN4V_CHIP_NIAGARA5 ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC_M6 ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC_M7 ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC_M8 ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC_SN ||
+			    sun4v_chip_type == SUN4V_CHIP_SPARC64X)
+				cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC |
+					AV_SPARC_FMAF);
+		}
+	}
+	sparc64_elf_hwcap = cap | mdesc_caps;
+
+	report_hwcaps(sparc64_elf_hwcap);
+
+	if (sparc64_elf_hwcap & AV_SPARC_POPC)
+		popc_patch();
+	if (sparc64_elf_hwcap & AV_SPARC_PAUSE)
+		pause_patch();
+}
+
+void __init alloc_irqstack_bootmem(void)
+{
+	unsigned int i, node;
+
+	for_each_possible_cpu(i) {
+		node = cpu_to_node(i);
+
+		softirq_stack[i] = memblock_alloc_node(THREAD_SIZE,
+						       THREAD_SIZE, node);
+		if (!softirq_stack[i])
+			panic("%s: Failed to allocate %lu bytes align=%lx nid=%d\n",
+			      __func__, THREAD_SIZE, THREAD_SIZE, node);
+		hardirq_stack[i] = memblock_alloc_node(THREAD_SIZE,
+						       THREAD_SIZE, node);
+		if (!hardirq_stack[i])
+			panic("%s: Failed to allocate %lu bytes align=%lx nid=%d\n",
+			      __func__, THREAD_SIZE, THREAD_SIZE, node);
+	}
+}
+
+void __init setup_arch(char **cmdline_p)
+{
+	/* Initialize PROM console and command line. */
+	*cmdline_p = prom_getbootargs();
+	strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
+	parse_early_param();
+
+	boot_flags_init(*cmdline_p);
+#ifdef CONFIG_EARLYFB
+	if (btext_find_display())
+#endif
+		register_console(&prom_early_console);
+
+	if (tlb_type == hypervisor)
+		pr_info("ARCH: SUN4V\n");
+	else
+		pr_info("ARCH: SUN4U\n");
+
+	idprom_init();
+
+	if (!root_flags)
+		root_mountflags &= ~MS_RDONLY;
+	ROOT_DEV = old_decode_dev(root_dev);
+#ifdef CONFIG_BLK_DEV_RAM
+	rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
+#endif
+
+#ifdef CONFIG_IP_PNP
+	if (!ic_set_manually) {
+		phandle chosen = prom_finddevice("/chosen");
+		u32 cl, sv, gw;
+
+		cl = prom_getintdefault (chosen, "client-ip", 0);
+		sv = prom_getintdefault (chosen, "server-ip", 0);
+		gw = prom_getintdefault (chosen, "gateway-ip", 0);
+		if (cl && sv) {
+			ic_myaddr = cl;
+			ic_servaddr = sv;
+			if (gw)
+				ic_gateway = gw;
+#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
+			ic_proto_enabled = 0;
+#endif
+		}
+	}
+#endif
+
+	/* Get boot processor trap_block[] setup.  */
+	init_cur_cpu_trap(current_thread_info());
+
+	paging_init();
+	init_sparc64_elf_hwcap();
+	smp_fill_in_cpu_possible_map();
+	/*
+	 * Once the OF device tree and MDESC have been setup and nr_cpus has
+	 * been parsed, we know the list of possible cpus.  Therefore we can
+	 * allocate the IRQ stacks.
+	 */
+	alloc_irqstack_bootmem();
+}
+
+extern int stop_a_enabled;
+
+void sun_do_break(void)
+{
+	if (!stop_a_enabled)
+		return;
+
+	prom_printf("\n");
+	flush_user_windows();
+
+	prom_cmdline();
+}
+EXPORT_SYMBOL(sun_do_break);
+
+int stop_a_enabled = 1;
+EXPORT_SYMBOL(stop_a_enabled);