/*
|
* Copyright (C) 2016 Socionext Inc.
|
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
|
*
|
* SPDX-License-Identifier: GPL-2.0+
|
*/
|
|
#ifndef __DEBUG_H__
|
#define __DEBUG_H__
|
|
#include <linux/io.h>
|
#include <linux/serial_reg.h>
|
|
#define DEBUG_UART_BASE 0x54006800
|
#define UART_SHIFT 2
|
|
#define UNIPHIER_UART_TX 0
|
#define UNIPHIER_UART_LSR (5 * 4)
|
|
/* All functions are inline so that they can be called from .secure section. */
|
|
#ifdef DEBUG
|
static inline void debug_putc(int c)
|
{
|
void __iomem *base = (void __iomem *)DEBUG_UART_BASE;
|
|
while (!(readl(base + UNIPHIER_UART_LSR) & UART_LSR_THRE))
|
;
|
|
writel(c, base + UNIPHIER_UART_TX);
|
}
|
|
static inline void debug_puts(const char *s)
|
{
|
while (*s) {
|
if (*s == '\n')
|
debug_putc('\r');
|
|
debug_putc(*s++);
|
}
|
}
|
|
static inline void debug_puth(unsigned long val)
|
{
|
int i;
|
unsigned char c;
|
|
for (i = 8; i--; ) {
|
c = ((val >> (i * 4)) & 0xf);
|
c += (c >= 10) ? 'a' - 10 : '0';
|
debug_putc(c);
|
}
|
}
|
#else
|
static inline void debug_putc(int c)
|
{
|
}
|
|
static inline void debug_puts(const char *s)
|
{
|
}
|
|
static inline void debug_puth(unsigned long val)
|
{
|
}
|
#endif
|
|
#endif /* __DEBUG_H__ */
|
