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# SPDX-License-Identifier: MIT
from construct import *
from construct.core import Int16ul, Int32ul, Int64ul, Int8ul
from m1n1.hv import TraceMode
from m1n1.utils import *
from m1n1.trace import ADTDevTracer
from m1n1.trace.asc import ASCRegs
from m1n1.trace.asc import ASCTracer
ASCTracer = ASCTracer._reloadcls()
class NVMERegs(RegMap):
APPLE_NVMMU_NUM = 0x28100, Register32
APPLE_NVMMU_BASE_ASQ = 0x28108, Register32
APPLE_NVMMU_BASE_ASQ1 = 0x2810C, Register32
APPLE_NVMMU_BASE_IOSQ = 0x28110, Register32
APPLE_NVMMU_BASE_IOSQ1 = 0x28114, Register32
APPLE_NVMMU_TCB_INVAL = 0x28118, Register32
APPLE_NVMMU_TCB_STAT = 0x28120, Register32
APPLE_ANS2_LINEAR_SQ_CTRL = 0x24908, Register32
APPLE_ANS2_UNKNOWN_CTRL = 0x24008, Register32
APPLE_ANS2_BOOT_STATUS = 0x1300, Register32
APPLE_ANS2_MAX_PEND_CMDS_CTRL = 0x1210, Register32
APPLE_ANS2_LINEAR_ASQ_DB = 0x2490C, Register32
APPLE_ANS2_LINEAR_IOSQ_DB = 0x24910, Register32
NVME_REG_CAP = 0x0000, Register32
NVME_REG_VS = 0x0008, Register32
NVME_REG_INTMS = 0x000C, Register32
NVME_REG_INTMC = 0x0010, Register32
NVME_REG_CC = 0x0014, Register32
NVME_REG_CSTS = 0x001C, Register32
NVME_REG_NSSR = 0x0020, Register32
NVME_REG_AQA = 0x0024, Register32
NVME_REG_ASQ = 0x0028, Register32
NVME_REG_ASQ1 = 0x002C, Register32
NVME_REG_ACQ = 0x0030, Register32
NVME_REG_CMBLOC = 0x0038, Register32
NVME_REG_CMBSZ = 0x003C, Register32
NVME_REG_BPINFO = 0x0040, Register32
NVME_REG_BPRSEL = 0x0044, Register32
NVME_REG_BPMBL = 0x0048, Register32
NVME_REG_CMBMSC = 0x0050, Register32
NVME_REG_PMRCAP = 0x0E00, Register32
NVME_REG_PMRCTL = 0x0E04, Register32
NVME_REG_PMRSTS = 0x0E08, Register32
NVME_REG_PMREBS = 0x0E0C, Register32
NVME_REG_PMRSWTP = 0x0E10, Register32
NVME_REG_DBS = 0x1000, Register32
NVME_REG_DBS_ASQ = 0x1004, Register32
NVME_REG_DBS_IOSQ = 0x100C, Register32
AppleTunnelSetTime = Struct(
"unk" / Int32ul,
"unix_timestamp" / Int32ul,
"time_0" / Int64ul,
"time_1" / Int64ul,
)
NVMECommand = Struct(
"opcode" / Int8ul,
"flags" / Int8ul,
"command_id" / Int16ul,
"nsid" / Int32ul,
"cdw0" / Int32ul,
"cdw1" / Int32ul,
"metadata" / Int64ul,
"prp1" / Int64ul,
"prp2" / Int64ul,
"cdw10" / Int32ul,
"cdw11" / Int32ul,
"cdw12" / Int32ul,
"cdw13" / Int32ul,
"cdw14" / Int32ul,
"cdw16" / Int32ul,
)
NVME_IO_COMMANDS = {
0x00: "nvme_cmd_flush",
0x01: "nvme_cmd_write",
0x02: "nvme_cmd_read",
0x04: "nvme_cmd_write_uncor",
0x05: "nvme_cmd_compare",
0x08: "nvme_cmd_write_zeroes",
0x09: "nvme_cmd_dsm",
0x0C: "nvme_cmd_verify",
0x0D: "nvme_cmd_resv_register",
0x0E: "nvme_cmd_resv_report",
0x11: "nvme_cmd_resv_acquire",
0x15: "nvme_cmd_resv_release",
0x79: "nvme_cmd_zone_mgmt_send",
0x7A: "nvme_cmd_zone_mgmt_recv",
0x7D: "nvme_cmd_zone_append",
}
NVME_ADMIN_COMMANDS = {
0x00: "nvme_admin_delete_sq",
0x01: "nvme_admin_create_sq",
0x02: "nvme_admin_get_log_page",
0x04: "nvme_admin_delete_cq",
0x05: "nvme_admin_create_cq",
0x06: "nvme_admin_identify",
0x08: "nvme_admin_abort_cmd",
0x09: "nvme_admin_set_features",
0x0A: "nvme_admin_get_features",
0x0C: "nvme_admin_async_event",
0x0D: "nvme_admin_ns_mgmt",
0x10: "nvme_admin_activate_fw",
0x11: "nvme_admin_download_fw",
0x14: "nvme_admin_dev_self_test",
0x15: "nvme_admin_ns_attach",
0x18: "nvme_admin_keep_alive",
0x19: "nvme_admin_directive_send",
0x1A: "nvme_admin_directive_recv",
0x1C: "nvme_admin_virtual_mgmt",
0x1D: "nvme_admin_nvme_mi_send",
0x1E: "nvme_admin_nvme_mi_recv",
0x7C: "nvme_admin_dbbuf",
0x80: "nvme_admin_format_nvm",
0x81: "nvme_admin_security_send",
0x82: "nvme_admin_security_recv",
0x84: "nvme_admin_sanitize_nvm",
0x86: "nvme_admin_get_lba_status",
0xC0: "nvme_admin_vendor_start",
}
APPLE_TUNNEL_CMDS = {0x06: "set_time", 0x38: "get_nand_id", 0xBA: "get_nand_geometry"}
NVMMUTcb = Struct(
"opcode" / Int8ul,
"dma_flags" / Int8ul,
"command_id" / Int8ul,
"unk0" / Int8ul,
"length" / Int32ul,
"unk1a" / Int64ul,
"unk1b" / Int64ul,
"prp0" / Int64ul,
"prp1" / Int64ul,
"unk2a" / Int64ul,
"unk2b" / Int64ul,
# aes_iv, u8[8]
# aes_data, u8[64]
)
class NVMETracer(ASCTracer):
DEFAULT_MODE = TraceMode.SYNC
REGMAPS = [ASCRegs, None, None, NVMERegs]
NAMES = ["asc", None, None, "nvme"]
ENDPOINTS = {}
def init_state(self):
self.state.ep = {}
self.state.cmd_cache = {}
self.state.nvmmu_asq_base = None
self.state.nvmmu_iosq_base = None
self.state.asq = None
def r_APPLE_NVMMU_TCB_STAT(self, r):
pass
def w_APPLE_NVMMU_BASE_ASQ(self, r):
self.state.nvmmu_asq_base = r.value
def w_APPLE_NVMMU_BASE_ASQ1(self, r):
self.state.nvmmu_asq_base |= r.value << 32
def w_APPLE_NVMMU_BASE_IOSQ(self, r):
self.state.nvmmu_iosq_base = r.value
def w_APPLE_NVMMU_BASE_IOSQ1(self, r):
self.state.nvmmu_iosq_base |= r.value << 32
def w_NVME_REG_ASQ(self, r):
self.state.asq = r.value
def w_NVME_REG_ASQ1(self, r):
self.state.asq |= r.value << 32
def w_APPLE_ANS2_LINEAR_ASQ_DB(self, r):
tag = r.value
cmd = NVMECommand.parse(self.hv.iface.readmem(self.state.asq + 64 * tag, 0x40))
tcb = NVMMUTcb.parse(
self.hv.iface.readmem(self.state.nvmmu_asq_base + 0x80 * tag, 0x80)
)
self.state.cmd_cache[tag] = (True, cmd, tcb)
if cmd.opcode == 0xD8:
self.log("apple_tunnel_cmd:")
self.parse_apple_tunnel_cmd(cmd, False)
return
cmdname = NVME_ADMIN_COMMANDS.get(cmd.opcode, "unknown")
self.log(f"{cmdname}:")
self.log(f" {repr(cmd)}")
self.log(f" {repr(tcb)}")
if cmd.opcode == 1:
self.state.iosq = cmd.prp1
def w_APPLE_ANS2_LINEAR_IOSQ_DB(self, r):
tag = r.value
cmd = NVMECommand.parse(self.hv.iface.readmem(self.state.iosq + 64 * tag, 0x40))
tcb = NVMMUTcb.parse(
self.hv.iface.readmem(self.state.nvmmu_iosq_base + 0x80 * tag, 0x80)
)
cmdname = NVME_IO_COMMANDS.get(cmd.opcode, "unknown")
self.log(f"{cmdname}:")
self.log(f" {repr(cmd)}")
self.log(f" {repr(tcb)}")
self.state.cmd_cache[tag] = (False, cmd, tcb)
def parse_apple_tunnel_cmd(self, cmd, done):
ptr0 = (cmd.cdw12 << 32) | cmd.cdw11
ptr1 = (cmd.cdw14 << 32) | cmd.cdw13
data = self.hv.iface.readmem(ptr0, 0x4000)
if ptr1 > 0:
data1 = self.hv.iface.readmem(ptr1, 0x4000)
apple_cmd_opcode = data[12]
apple_cmd = APPLE_TUNNEL_CMDS.get(apple_cmd_opcode, "Unknown")
if apple_cmd_opcode == 0x06:
self.log(
f" apple_tunnel_cmd: set_time: {repr(AppleTunnelSetTime.parse(data[0x18:0x30]))}"
)
elif apple_cmd_opcode == 0x38:
self.log(f" apple_tunnel_cmd: get_nand_id")
if done:
self.log(f" manufacturer id: {hexdump(data1[:8])}")
else:
self.log(f" apple_tunnel_cmd: {apple_cmd} ({apple_cmd_opcode})")
chexdump(data, print_fn=self.log)
if ptr1 > 0:
chexdump(self.hv.iface.readmem(ptr1, 0x4000), print_fn=self.log)
def w_APPLE_NVMMU_TCB_INVAL(self, r):
self.log(f" NVMMU inval for {r.value}")
tag = r.value
if tag not in self.state.cmd_cache:
self.log(" NVMMU tag not found in cmd_cache")
return
is_admin, cmd, tcb = self.state.cmd_cache[tag]
del self.state.cmd_cache[tag]
if is_admin:
if cmd.opcode == 0xD8:
self.log(f" done apple_tunnel_cmd")
self.parse_apple_tunnel_cmd(cmd, True)
else:
cmdname = NVME_ADMIN_COMMANDS.get(cmd.opcode, "unknown")
self.log(f" done {cmdname}")
else:
cmdname = NVME_IO_COMMANDS.get(cmd.opcode, "unknown")
self.log(f" done {cmdname}")
def start(self):
self.state.cmd_cache = {}
super().start()
NVMETracer = NVMETracer._reloadcls()
nvme_tracer = NVMETracer(hv, "/arm-io/ans", verbose=1)
nvme_tracer.start()
trace_device("/arm-io/sart-ans")
|
