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/*
* Copyright (C) 2014 Antony Pavlov <antonynpavlov@gmail.com>
*
* This file is part of barebox.
* See file CREDITS for list of people who contributed to this project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
*/
#ifndef __MACH_BCM2835_DEBUG_LL_H__
#define __MACH_BCM2835_DEBUG_LL_H__
#include <mach/platform.h>
#ifdef CONFIG_DEBUG_RPI1_UART
static inline void debug_ll_init(void)
{
/* Configured by ROM */
}
#define DEBUG_LL_UART_ADDR BCM2835_PL011_BASE
#include <debug_ll/pl011.h>
#elif defined CONFIG_DEBUG_RPI2_3_UART
static inline void debug_ll_init(void)
{
/* Configured by ROM */
}
#define DEBUG_LL_UART_ADDR BCM2836_PL011_BASE
#include <debug_ll/pl011.h>
#elif defined CONFIG_DEBUG_RPI3_MINI_UART
static inline uint8_t debug_ll_read_reg(int reg)
{
return readb(BCM2836_MINIUART_BASE + (reg << 2));
}
static inline void debug_ll_write_reg(int reg, uint8_t val)
{
writeb(val, BCM2836_MINIUART_BASE + (reg << 2));
}
#define BCM2836_AUX_CLOCK_ENB 0x3f215004 /* BCM2835 AUX Clock enable register */
#define BCM2836_AUX_CLOCK_EN_UART BIT(0) /* Bit 0 enables the Miniuart */
#include <debug_ll/ns16550.h>
static inline void debug_ll_init(void)
{
uint16_t divisor;
writeb(BCM2836_AUX_CLOCK_EN_UART, BCM2836_AUX_CLOCK_ENB);
divisor = debug_ll_ns16550_calc_divisor(250000000 * 2);
debug_ll_ns16550_init(divisor);
}
#endif
#endif /* __MACH_BCM2835_DEBUG_LL_H__ */
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