55cc11bc43
Changes in 4.9.143 mm/huge_memory: rename freeze_page() to unmap_page() mm/huge_memory.c: reorder operations in __split_huge_page_tail() mm/huge_memory: splitting set mapping+index before unfreeze mm/huge_memory: fix lockdep complaint on 32-bit i_size_read() mm/khugepaged: collapse_shmem() stop if punched or truncated shmem: shmem_charge: verify max_block is not exceeded before inode update shmem: introduce shmem_inode_acct_block mm/khugepaged: fix crashes due to misaccounted holes mm/khugepaged: collapse_shmem() remember to clear holes mm/khugepaged: minor reorderings in collapse_shmem() mm/khugepaged: collapse_shmem() without freezing new_page mm/khugepaged: collapse_shmem() do not crash on Compound media: em28xx: Fix use-after-free when disconnecting Revert "wlcore: Add missing PM call for wlcore_cmd_wait_for_event_or_timeout()" net: skb_scrub_packet(): Scrub offload_fwd_mark rapidio/rionet: do not free skb before reading its length s390/qeth: fix length check in SNMP processing usbnet: ipheth: fix potential recvmsg bug and recvmsg bug 2 kvm: mmu: Fix race in emulated page table writes kvm: svm: Ensure an IBPB on all affected CPUs when freeing a vmcb KVM: X86: Fix scan ioapic use-before-initialization xtensa: enable coprocessors that are being flushed xtensa: fix coprocessor context offset definitions Btrfs: ensure path name is null terminated at btrfs_control_ioctl perf/x86/intel: Move branch tracing setup to the Intel-specific source file perf/x86/intel: Add generic branch tracing check to intel_pmu_has_bts() fs: fix lost error code in dio_complete ALSA: wss: Fix invalid snd_free_pages() at error path ALSA: ac97: Fix incorrect bit shift at AC97-SPSA control write ALSA: control: Fix race between adding and removing a user element ALSA: sparc: Fix invalid snd_free_pages() at error path ext2: fix potential use after free dmaengine: at_hdmac: fix memory leak in at_dma_xlate() dmaengine: at_hdmac: fix module unloading btrfs: release metadata before running delayed refs USB: usb-storage: Add new IDs to ums-realtek usb: core: quirks: add RESET_RESUME quirk for Cherry G230 Stream series Revert "usb: dwc3: gadget: skip Set/Clear Halt when invalid" iio:st_magn: Fix enable device after trigger mm: use swp_offset as key in shmem_replace_page() Drivers: hv: vmbus: check the creation_status in vmbus_establish_gpadl() misc: mic/scif: fix copy-paste error in scif_create_remote_lookup efi/libstub: arm: support building with clang ARM: 8766/1: drop no-thumb-interwork in EABI mode ARM: 8767/1: add support for building ARM kernel with clang bus: arm-cci: remove unnecessary unreachable() ARM: trusted_foundations: do not use naked function workqueue: avoid clang warning efi/libstub: Make file I/O chunking x86-specific kbuild: Set KBUILD_CFLAGS before incl. arch Makefile Linux 4.9.143 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
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* Trusted Foundations support for ARM CPUs
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*
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* Copyright (c) 2013, NVIDIA Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/of.h>
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#include <asm/firmware.h>
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#include <asm/trusted_foundations.h>
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#define TF_SET_CPU_BOOT_ADDR_SMC 0xfffff200
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#define TF_CPU_PM 0xfffffffc
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#define TF_CPU_PM_S3 0xffffffe3
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#define TF_CPU_PM_S2 0xffffffe6
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#define TF_CPU_PM_S2_NO_MC_CLK 0xffffffe5
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#define TF_CPU_PM_S1 0xffffffe4
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#define TF_CPU_PM_S1_NOFLUSH_L2 0xffffffe7
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static unsigned long cpu_boot_addr;
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static void tf_generic_smc(u32 type, u32 arg1, u32 arg2)
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{
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register u32 r0 asm("r0") = type;
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register u32 r1 asm("r1") = arg1;
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register u32 r2 asm("r2") = arg2;
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asm volatile(
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".arch_extension sec\n\t"
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"stmfd sp!, {r4 - r11}\n\t"
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__asmeq("%0", "r0")
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__asmeq("%1", "r1")
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__asmeq("%2", "r2")
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"mov r3, #0\n\t"
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"mov r4, #0\n\t"
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"smc #0\n\t"
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"ldmfd sp!, {r4 - r11}\n\t"
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:
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: "r" (r0), "r" (r1), "r" (r2)
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: "memory", "r3", "r12", "lr");
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}
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static int tf_set_cpu_boot_addr(int cpu, unsigned long boot_addr)
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{
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cpu_boot_addr = boot_addr;
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tf_generic_smc(TF_SET_CPU_BOOT_ADDR_SMC, cpu_boot_addr, 0);
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return 0;
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}
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static int tf_prepare_idle(void)
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{
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tf_generic_smc(TF_CPU_PM, TF_CPU_PM_S1_NOFLUSH_L2, cpu_boot_addr);
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return 0;
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}
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static const struct firmware_ops trusted_foundations_ops = {
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.set_cpu_boot_addr = tf_set_cpu_boot_addr,
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.prepare_idle = tf_prepare_idle,
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};
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void register_trusted_foundations(struct trusted_foundations_platform_data *pd)
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{
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/*
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* we are not using version information for now since currently
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* supported SMCs are compatible with all TF releases
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*/
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register_firmware_ops(&trusted_foundations_ops);
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}
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void of_register_trusted_foundations(void)
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{
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struct device_node *node;
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struct trusted_foundations_platform_data pdata;
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int err;
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node = of_find_compatible_node(NULL, NULL, "tlm,trusted-foundations");
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if (!node)
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return;
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err = of_property_read_u32(node, "tlm,version-major",
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&pdata.version_major);
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if (err != 0)
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panic("Trusted Foundation: missing version-major property\n");
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err = of_property_read_u32(node, "tlm,version-minor",
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&pdata.version_minor);
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if (err != 0)
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panic("Trusted Foundation: missing version-minor property\n");
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register_trusted_foundations(&pdata);
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}
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