158 lines
4.9 KiB
C
158 lines
4.9 KiB
C
/*
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* Copyright (C) 2015-2016, Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include "contiki.h"
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#include "imr.h"
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#include "msg-bus.h"
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#define HOST_BRIGE_PORT 3
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#define HSMMCTL_OFFSET 4
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#define HMBOUND_OFFSET 8
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/* Refer to Intel Quark SoC X1000 Datasheet, Section 12.7.2.2 for more details
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* on the Host System Management Mode Controls register.
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*/
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typedef union hsmmctl {
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struct {
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uint32_t lock : 1;
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uint32_t rd_open : 1;
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uint32_t wr_open : 1;
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uint32_t : 1;
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uint32_t start : 12;
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uint32_t : 1;
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uint32_t non_host_rd_open : 1;
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uint32_t non_host_wr_open : 1;
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uint32_t : 1;
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uint32_t end : 12;
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};
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uint32_t raw;
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} hsmmctl_t;
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/* Amount to shift hsmmctl.start/end left to obtain the bound address */
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#define HSMMCTL_SHAMT 20
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/* Refer to Intel Quark SoC X1000 Datasheet, Section 12.7.2.3 for more details
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* on the Host Memory I/O Boundary register.
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*/
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typedef union hmbound {
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struct {
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uint32_t lock : 1;
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uint32_t io_dis : 1;
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uint32_t : 10;
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uint32_t io_bnd : 20;
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};
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uint32_t raw;
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} hmbound_t;
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/* Amount to shift hmbound.io_bnd left to obtain the bound address */
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#define HMBOUND_SHAMT 12
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PROCESS(imr_process, "IMR Process");
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AUTOSTART_PROCESSES(&imr_process);
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/*---------------------------------------------------------------------------*/
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static hsmmctl_t
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hsmmctl_read(void)
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{
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hsmmctl_t hsmm;
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quarkX1000_msg_bus_read(HOST_BRIGE_PORT, HSMMCTL_OFFSET, &hsmm.raw);
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return hsmm;
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}
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/*---------------------------------------------------------------------------*/
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static void
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hsmmctl_print(hsmmctl_t hsmm)
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{
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printf("[%08x, %08x) %slocked, non-SMM host: %c%c, non-host: %c%c",
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hsmm.start << HSMMCTL_SHAMT, hsmm.end << HSMMCTL_SHAMT,
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hsmm.lock ? "" : "un",
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hsmm.rd_open ? 'R' : '-', hsmm.wr_open ? 'W' : '-',
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hsmm.non_host_rd_open ? 'R' : '-', hsmm.non_host_wr_open ? 'W' : '-');
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}
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/*---------------------------------------------------------------------------*/
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static hmbound_t
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hmbound_read(void)
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{
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hmbound_t hmb;
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quarkX1000_msg_bus_read(HOST_BRIGE_PORT, HMBOUND_OFFSET, &hmb.raw);
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return hmb;
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}
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/*---------------------------------------------------------------------------*/
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static void
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hmbound_print(hmbound_t hmb)
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{
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printf("%08x %slocked, IO %sabled",
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hmb.io_bnd << HMBOUND_SHAMT,
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hmb.lock ? "" : "un",
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hmb.io_dis ? "dis" : "en");
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}
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/*---------------------------------------------------------------------------*/
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static void
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imr_print(quarkX1000_imr_t imr)
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{
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printf("[%08x, %08x) %slocked, rdmsk: %08x, wrmsk: %08x",
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imr.lo.addr << QUARKX1000_IMR_SHAMT,
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imr.hi.addr << QUARKX1000_IMR_SHAMT,
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imr.lo.lock ? "" : "un", imr.rdmsk.raw, imr.wrmsk.raw);
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(imr_process, ev, data)
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{
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int i;
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quarkX1000_imr_t imr;
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hsmmctl_t hsmm;
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hmbound_t hmb;
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PROCESS_BEGIN();
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fputs("Host SMM Controls: ", stdout);
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hsmm = hsmmctl_read();
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hsmmctl_print(hsmm);
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fputs("\nHost Memory IO Boundary: ", stdout);
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hmb = hmbound_read();
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hmbound_print(hmb);
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puts("\nIsolated Memory Regions:");
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for(i = 0; i < QUARKX1000_IMR_CNT; i++) {
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printf(" - #%d: ", i);
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imr = quarkX1000_imr_read(i);
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imr_print(imr);
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puts("");
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}
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PROCESS_END();
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}
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