Arti Zirk
2de3a91b0a
subrepo: subdir: "libopencm3" merged: "88e91c9a7cce" upstream: origin: "https://github.com/libopencm3/libopencm3.git" branch: "master" commit: "88e91c9a7cce" git-subrepo: version: "0.4.3" origin: "???" commit: "???"
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2012 Benjamin Vernoux <titanmkd@gmail.com>
|
|
*
|
|
* This library is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <libopencm3/lpc43xx/ipc.h>
|
|
#include <libopencm3/lpc43xx/creg.h>
|
|
#include <libopencm3/lpc43xx/rgu.h>
|
|
|
|
/* Set M0 in reset mode */
|
|
void ipc_halt_m0(void)
|
|
{
|
|
volatile uint32_t rst_active_status1;
|
|
|
|
/* Check if M0 is reset by reading status */
|
|
rst_active_status1 = RESET_ACTIVE_STATUS1;
|
|
|
|
/* If the M0 has reset not asserted, halt it... */
|
|
while (rst_active_status1 & RESET_CTRL1_M0APP_RST) {
|
|
RESET_CTRL1 = ((~rst_active_status1) | RESET_CTRL1_M0APP_RST);
|
|
rst_active_status1 = RESET_ACTIVE_STATUS1;
|
|
}
|
|
}
|
|
|
|
void ipc_start_m0(uint32_t cm0_baseaddr)
|
|
{
|
|
volatile uint32_t rst_active_status1;
|
|
|
|
/* Set M0 memory mapping to point to start of M0 image */
|
|
CREG_M0APPMEMMAP = cm0_baseaddr;
|
|
|
|
/* Start/run M0 core */
|
|
|
|
/* Release Slave from reset, first read status */
|
|
rst_active_status1 = RESET_ACTIVE_STATUS1;
|
|
|
|
/* If the M0 is being held in reset, release it */
|
|
/* 1 = no reset, 0 = reset */
|
|
while (!(rst_active_status1 & RESET_CTRL1_M0APP_RST)) {
|
|
RESET_CTRL1 = ((~rst_active_status1) & ~RESET_CTRL1_M0APP_RST);
|
|
rst_active_status1 = RESET_ACTIVE_STATUS1;
|
|
}
|
|
}
|
|
|