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cc2538: Provide SoC information

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Add functions providing the SoC revision, SRAM size, and enabled
hardware features, as well as a function printing SoC information.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
This commit is contained in:
Benoît Thébaudeau 2016-06-11 23:15:22 +02:00
parent b3ea790449
commit b655d92aa4
3 changed files with 196 additions and 1 deletions
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2
cpu/cc2538/Makefile.cc2538
View file

@ -51,7 +51,7 @@ CONTIKI_CPU_DIRS += ../arm/common/dbg-io
CONTIKI_CPU_DIRS += ../cc253x/usb/common ../cc253x/usb/common/cdc-acm
### CPU-dependent source files
CONTIKI_CPU_SOURCEFILES += clock.c rtimer-arch.c uart.c watchdog.c
CONTIKI_CPU_SOURCEFILES += soc.c clock.c rtimer-arch.c uart.c watchdog.c
CONTIKI_CPU_SOURCEFILES += nvic.c cpu.c sys-ctrl.c gpio.c ioc.c spi.c adc.c
CONTIKI_CPU_SOURCEFILES += crypto.c aes.c ecb.c cbc.c ctr.c cbc-mac.c gcm.c
CONTIKI_CPU_SOURCEFILES += ccm.c sha256.c

108
cpu/cc2538/soc.c Normal file
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@ -0,0 +1,108 @@
/*
* Copyright (c) 2016, Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
* 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.
*/
/**
* \addtogroup cc2538-soc
* @{
*
* \file
* Implementation of the cc2538 SoC driver
*/
#include "contiki-conf.h"
#include "dev/rom-util.h"
#include "dev/sys-ctrl.h"
#include "reg.h"
#include "soc.h"
#include <stdint.h>
#include <stdio.h>
/*----------------------------------------------------------------------------*/
#define DIECFG0 0x400d3014
#define DIECFG0_SRAM_SIZE_OFS 7
#define DIECFG0_SRAM_SIZE_SZ 3
#define DIECFG0_SRAM_SIZE_MSK (((1 << DIECFG0_SRAM_SIZE_SZ) - 1) << \
DIECFG0_SRAM_SIZE_OFS)
#define DIECFG2 0x400d301c
#define DIECFG2_DIE_REV_OFS 8
#define DIECFG2_DIE_REV_SZ 8
#define DIECFG2_DIE_REV_MSK (((1 << DIECFG2_DIE_REV_SZ) - 1) << \
DIECFG2_DIE_REV_OFS)
#define DIECFG2_AES_EN 0x00000002
#define DIECFG2_PKA_EN 0x00000001
/*----------------------------------------------------------------------------*/
uint8_t
soc_get_rev(void)
{
uint8_t rev = (REG(DIECFG2) & DIECFG2_DIE_REV_MSK) >> DIECFG2_DIE_REV_OFS;
/* PG1.0 is encoded as 0x00. */
if(!(rev >> 4))
rev += 0x10;
return rev;
}
/*----------------------------------------------------------------------------*/
uint32_t
soc_get_sram_size(void)
{
uint32_t size_code = (REG(DIECFG0) & DIECFG0_SRAM_SIZE_MSK) >>
DIECFG0_SRAM_SIZE_OFS;
return size_code <= 1 ? (2 - size_code) << 13 : 32 << 10;
}
/*----------------------------------------------------------------------------*/
uint32_t
soc_get_features(void)
{
return REG(DIECFG2) & (DIECFG2_AES_EN | DIECFG2_PKA_EN);
}
/*----------------------------------------------------------------------------*/
void
soc_print_info(void)
{
uint8_t rev = soc_get_rev();
uint32_t features = soc_get_features();
printf("CC2538: ID: 0x%04lx, rev.: PG%d.%d, Flash: %lu KiB, SRAM: %lu KiB, "
"AES/SHA: %u, ECC/RSA: %u\n"
"System clock: %lu Hz\n"
"I/O clock: %lu Hz\n"
"Reset cause: %s\n",
rom_util_get_chip_id(),
rev >> 4, rev & 0x0f,
rom_util_get_flash_size() >> 10,
soc_get_sram_size() >> 10,
!!(features & SOC_FEATURE_AES_SHA),
!!(features & SOC_FEATURE_ECC_RSA),
sys_ctrl_get_sys_clock(),
sys_ctrl_get_io_clock(),
sys_ctrl_get_reset_cause_str());
}
/** @} */

87
cpu/cc2538/soc.h Normal file
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@ -0,0 +1,87 @@
/*
* Copyright (c) 2016, Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
* 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.
*/
/**
* \addtogroup cc2538
* @{
*
* \defgroup cc2538-soc cc2538 SoC
*
* Driver for the cc2538 SoC
* @{
*
* \file
* Header file with macro and function declarations for the cc2538 SoC
*/
#ifndef SOC_H_
#define SOC_H_
#include "contiki-conf.h"
#include <stdint.h>
/*----------------------------------------------------------------------------*/
/** \name SoC features
* @{
*/
#define SOC_FEATURE_AES_SHA 0x00000002 /**< Security HW AES/SHA */
#define SOC_FEATURE_ECC_RSA 0x00000001 /**< Security HW ECC/RSA */
/** @} */
/*----------------------------------------------------------------------------*/
/** \name SoC functions
* @{
*/
/** \brief Gets the SoC revision
* \return The SoC revision as a byte with nibbles representing the major and
* minor revisions
*/
uint8_t soc_get_rev(void);
/** \brief Gets the SRAM size of the SoC
* \return The SRAM size in bytes
*/
uint32_t soc_get_sram_size(void);
/** \brief Gets the hardware features of the SoC that are enabled
* \return The enabled hardware features as a bitmask of \c SOC_FEATURE_x values
*/
uint32_t soc_get_features(void);
/** \brief Prints SoC information */
void soc_print_info(void);
/** @} */
#endif /* SOC_H_ */
/**
* @}
* @}
*/