contiki/examples/galileo/print-imr.c

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