From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/mtd/parsers/afs.c | 395 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 395 insertions(+) create mode 100644 drivers/mtd/parsers/afs.c (limited to 'drivers/mtd/parsers/afs.c') diff --git a/drivers/mtd/parsers/afs.c b/drivers/mtd/parsers/afs.c new file mode 100644 index 000000000..26116694c --- /dev/null +++ b/drivers/mtd/parsers/afs.c @@ -0,0 +1,395 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/*====================================================================== + + drivers/mtd/afs.c: ARM Flash Layout/Partitioning + + Copyright © 2000 ARM Limited + Copyright (C) 2019 Linus Walleij + + + This is access code for flashes using ARM's flash partitioning + standards. + +======================================================================*/ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define AFSV1_FOOTER_MAGIC 0xA0FFFF9F +#define AFSV2_FOOTER_MAGIC1 0x464C5348 /* "FLSH" */ +#define AFSV2_FOOTER_MAGIC2 0x464F4F54 /* "FOOT" */ + +struct footer_v1 { + u32 image_info_base; /* Address of first word of ImageFooter */ + u32 image_start; /* Start of area reserved by this footer */ + u32 signature; /* 'Magic' number proves it's a footer */ + u32 type; /* Area type: ARM Image, SIB, customer */ + u32 checksum; /* Just this structure */ +}; + +struct image_info_v1 { + u32 bootFlags; /* Boot flags, compression etc. */ + u32 imageNumber; /* Unique number, selects for boot etc. */ + u32 loadAddress; /* Address program should be loaded to */ + u32 length; /* Actual size of image */ + u32 address; /* Image is executed from here */ + char name[16]; /* Null terminated */ + u32 headerBase; /* Flash Address of any stripped header */ + u32 header_length; /* Length of header in memory */ + u32 headerType; /* AIF, RLF, s-record etc. */ + u32 checksum; /* Image checksum (inc. this struct) */ +}; + +static u32 word_sum(void *words, int num) +{ + u32 *p = words; + u32 sum = 0; + + while (num--) + sum += *p++; + + return sum; +} + +static u32 word_sum_v2(u32 *p, u32 num) +{ + u32 sum = 0; + int i; + + for (i = 0; i < num; i++) { + u32 val; + + val = p[i]; + if (val > ~sum) + sum++; + sum += val; + } + return ~sum; +} + +static bool afs_is_v1(struct mtd_info *mtd, u_int off) +{ + /* The magic is 12 bytes from the end of the erase block */ + u_int ptr = off + mtd->erasesize - 12; + u32 magic; + size_t sz; + int ret; + + ret = mtd_read(mtd, ptr, 4, &sz, (u_char *)&magic); + if (ret < 0) { + printk(KERN_ERR "AFS: mtd read failed at 0x%x: %d\n", + ptr, ret); + return false; + } + if (ret >= 0 && sz != 4) + return false; + + return (magic == AFSV1_FOOTER_MAGIC); +} + +static bool afs_is_v2(struct mtd_info *mtd, u_int off) +{ + /* The magic is the 8 last bytes of the erase block */ + u_int ptr = off + mtd->erasesize - 8; + u32 foot[2]; + size_t sz; + int ret; + + ret = mtd_read(mtd, ptr, 8, &sz, (u_char *)foot); + if (ret < 0) { + printk(KERN_ERR "AFS: mtd read failed at 0x%x: %d\n", + ptr, ret); + return false; + } + if (ret >= 0 && sz != 8) + return false; + + return (foot[0] == AFSV2_FOOTER_MAGIC1 && + foot[1] == AFSV2_FOOTER_MAGIC2); +} + +static int afs_parse_v1_partition(struct mtd_info *mtd, + u_int off, struct mtd_partition *part) +{ + struct footer_v1 fs; + struct image_info_v1 iis; + u_int mask; + /* + * Static checks cannot see that we bail out if we have an error + * reading the footer. + */ + u_int iis_ptr; + u_int img_ptr; + u_int ptr; + size_t sz; + int ret; + int i; + + /* + * This is the address mask; we use this to mask off out of + * range address bits. + */ + mask = mtd->size - 1; + + ptr = off + mtd->erasesize - sizeof(fs); + ret = mtd_read(mtd, ptr, sizeof(fs), &sz, (u_char *)&fs); + if (ret >= 0 && sz != sizeof(fs)) + ret = -EINVAL; + if (ret < 0) { + printk(KERN_ERR "AFS: mtd read failed at 0x%x: %d\n", + ptr, ret); + return ret; + } + /* + * Check the checksum. + */ + if (word_sum(&fs, sizeof(fs) / sizeof(u32)) != 0xffffffff) + return -EINVAL; + + /* + * Hide the SIB (System Information Block) + */ + if (fs.type == 2) + return 0; + + iis_ptr = fs.image_info_base & mask; + img_ptr = fs.image_start & mask; + + /* + * Check the image info base. This can not + * be located after the footer structure. + */ + if (iis_ptr >= ptr) + return 0; + + /* + * Check the start of this image. The image + * data can not be located after this block. + */ + if (img_ptr > off) + return 0; + + /* Read the image info block */ + memset(&iis, 0, sizeof(iis)); + ret = mtd_read(mtd, iis_ptr, sizeof(iis), &sz, (u_char *)&iis); + if (ret < 0) { + printk(KERN_ERR "AFS: mtd read failed at 0x%x: %d\n", + iis_ptr, ret); + return -EINVAL; + } + + if (sz != sizeof(iis)) + return -EINVAL; + + /* + * Validate the name - it must be NUL terminated. + */ + for (i = 0; i < sizeof(iis.name); i++) + if (iis.name[i] == '\0') + break; + if (i > sizeof(iis.name)) + return -EINVAL; + + part->name = kstrdup(iis.name, GFP_KERNEL); + if (!part->name) + return -ENOMEM; + + part->size = (iis.length + mtd->erasesize - 1) & ~(mtd->erasesize - 1); + part->offset = img_ptr; + part->mask_flags = 0; + + printk(" mtd: at 0x%08x, %5lluKiB, %8u, %s\n", + img_ptr, part->size / 1024, + iis.imageNumber, part->name); + + return 0; +} + +static int afs_parse_v2_partition(struct mtd_info *mtd, + u_int off, struct mtd_partition *part) +{ + u_int ptr; + u32 footer[12]; + u32 imginfo[36]; + char *name; + u32 version; + u32 entrypoint; + u32 attributes; + u32 region_count; + u32 block_start; + u32 block_end; + u32 crc; + size_t sz; + int ret; + int i; + int pad = 0; + + pr_debug("Parsing v2 partition @%08x-%08x\n", + off, off + mtd->erasesize); + + /* First read the footer */ + ptr = off + mtd->erasesize - sizeof(footer); + ret = mtd_read(mtd, ptr, sizeof(footer), &sz, (u_char *)footer); + if ((ret < 0) || (ret >= 0 && sz != sizeof(footer))) { + pr_err("AFS: mtd read failed at 0x%x: %d\n", + ptr, ret); + return -EIO; + } + name = (char *) &footer[0]; + version = footer[9]; + ptr = off + mtd->erasesize - sizeof(footer) - footer[8]; + + pr_debug("found image \"%s\", version %08x, info @%08x\n", + name, version, ptr); + + /* Then read the image information */ + ret = mtd_read(mtd, ptr, sizeof(imginfo), &sz, (u_char *)imginfo); + if ((ret < 0) || (ret >= 0 && sz != sizeof(imginfo))) { + pr_err("AFS: mtd read failed at 0x%x: %d\n", + ptr, ret); + return -EIO; + } + + /* 32bit platforms have 4 bytes padding */ + crc = word_sum_v2(&imginfo[1], 34); + if (!crc) { + pr_debug("Padding 1 word (4 bytes)\n"); + pad = 1; + } else { + /* 64bit platforms have 8 bytes padding */ + crc = word_sum_v2(&imginfo[2], 34); + if (!crc) { + pr_debug("Padding 2 words (8 bytes)\n"); + pad = 2; + } + } + if (crc) { + pr_err("AFS: bad checksum on v2 image info: %08x\n", crc); + return -EINVAL; + } + entrypoint = imginfo[pad]; + attributes = imginfo[pad+1]; + region_count = imginfo[pad+2]; + block_start = imginfo[20]; + block_end = imginfo[21]; + + pr_debug("image entry=%08x, attr=%08x, regions=%08x, " + "bs=%08x, be=%08x\n", + entrypoint, attributes, region_count, + block_start, block_end); + + for (i = 0; i < region_count; i++) { + u32 region_load_addr = imginfo[pad + 3 + i*4]; + u32 region_size = imginfo[pad + 4 + i*4]; + u32 region_offset = imginfo[pad + 5 + i*4]; + u32 region_start; + u32 region_end; + + pr_debug(" region %d: address: %08x, size: %08x, " + "offset: %08x\n", + i, + region_load_addr, + region_size, + region_offset); + + region_start = off + region_offset; + region_end = region_start + region_size; + /* Align partition to end of erase block */ + region_end += (mtd->erasesize - 1); + region_end &= ~(mtd->erasesize -1); + pr_debug(" partition start = %08x, partition end = %08x\n", + region_start, region_end); + + /* Create one partition per region */ + part->name = kstrdup(name, GFP_KERNEL); + if (!part->name) + return -ENOMEM; + part->offset = region_start; + part->size = region_end - region_start; + part->mask_flags = 0; + } + + return 0; +} + +static int parse_afs_partitions(struct mtd_info *mtd, + const struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + struct mtd_partition *parts; + u_int off, sz; + int ret = 0; + int i; + + /* Count the partitions by looping over all erase blocks */ + for (i = off = sz = 0; off < mtd->size; off += mtd->erasesize) { + if (afs_is_v1(mtd, off)) { + sz += sizeof(struct mtd_partition); + i += 1; + } + if (afs_is_v2(mtd, off)) { + sz += sizeof(struct mtd_partition); + i += 1; + } + } + + if (!i) + return 0; + + parts = kzalloc(sz, GFP_KERNEL); + if (!parts) + return -ENOMEM; + + /* + * Identify the partitions + */ + for (i = off = 0; off < mtd->size; off += mtd->erasesize) { + if (afs_is_v1(mtd, off)) { + ret = afs_parse_v1_partition(mtd, off, &parts[i]); + if (ret) + goto out_free_parts; + i++; + } + if (afs_is_v2(mtd, off)) { + ret = afs_parse_v2_partition(mtd, off, &parts[i]); + if (ret) + goto out_free_parts; + i++; + } + } + + *pparts = parts; + return i; + +out_free_parts: + while (--i >= 0) + kfree(parts[i].name); + kfree(parts); + *pparts = NULL; + return ret; +} + +static const struct of_device_id mtd_parser_afs_of_match_table[] = { + { .compatible = "arm,arm-firmware-suite" }, + {}, +}; +MODULE_DEVICE_TABLE(of, mtd_parser_afs_of_match_table); + +static struct mtd_part_parser afs_parser = { + .parse_fn = parse_afs_partitions, + .name = "afs", + .of_match_table = mtd_parser_afs_of_match_table, +}; +module_mtd_part_parser(afs_parser); + +MODULE_AUTHOR("ARM Ltd"); +MODULE_DESCRIPTION("ARM Firmware Suite partition parser"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3