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/*
* Copyright (c) 2016 Brian Swetland
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <debug.h>
#include <platform.h>
#include <arch/arm/cm.h>
#include <driverlib/prcm.h>
#include <driverlib/ioc.h>
#include <driverlib/uart.h>
#include <driverlib/osc.h>
// if GPIO_UART_?R are defined, route UART there
#include <target/gpioconfig.h>
void trimDevice(void);
#define UART0_BASE 0x40001000
void platform_early_init(void) {
trimDevice();
PRCMPowerDomainOn(PRCM_DOMAIN_SERIAL);
while (PRCMPowerDomainStatus(PRCM_DOMAIN_SERIAL) != PRCM_DOMAIN_POWER_ON) ;
PRCMPowerDomainOn(PRCM_DOMAIN_PERIPH);
while (PRCMPowerDomainStatus(PRCM_DOMAIN_PERIPH) != PRCM_DOMAIN_POWER_ON) ;
PRCMPeripheralRunEnable(PRCM_PERIPH_UART0);
PRCMPeripheralRunEnable(PRCM_PERIPH_GPIO);
PRCMLoadSet();
#ifdef GPIO_UART_TX
IOCPortConfigureSet(GPIO_UART_TX, IOC_PORT_MCU_UART0_TX, 0);
#endif
#ifdef GPIO_UART_RX
IOCPortConfigureSet(GPIO_UART_RX, IOC_PORT_MCU_UART0_RX, IOC_INPUT_ENABLE);
#endif
UARTConfigSetExpClk(UART0_BASE, 48000000, 115200,
UART_CONFIG_WLEN_8 | UART_CONFIG_PAR_NONE | UART_CONFIG_STOP_ONE);
UARTEnable(UART0_BASE);
arm_cm_systick_init(48000000);
// switch to 24MHz XOSC
OSCInterfaceEnable();
OSCClockSourceSet(OSC_SRC_CLK_HF, OSC_XOSC_HF);
OSCHfSourceSwitch();
#if 0
dprintf(INFO, "hf clk src %d\n", OSCClockSourceGet(OSC_SRC_CLK_HF));
dprintf(INFO, "mf clk src %d\n", OSCClockSourceGet(OSC_SRC_CLK_MF));
dprintf(INFO, "lf clk src %d\n", OSCClockSourceGet(OSC_SRC_CLK_LF));
#endif
}
void platform_init(void) {
}
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