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/*
* arch/arm/mach-vexpress/include/mach/uncompress.h
*
* Copyright (C) 2003 ARM Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define AMBA_UART_DR(base) (*(volatile unsigned char *)((base) + 0x00))
#define AMBA_UART_LCRH(base) (*(volatile unsigned char *)((base) + 0x2c))
#define AMBA_UART_CR(base) (*(volatile unsigned char *)((base) + 0x30))
#define AMBA_UART_FR(base) (*(volatile unsigned char *)((base) + 0x18))
#define UART_BASE 0x10009000
#define UART_BASE_RS1 0x1c090000
static unsigned long get_uart_base(void)
{
#if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)
unsigned long mpcore_periph;
/*
* Make an educated guess regarding the memory map:
* - the original A9 core tile, which has MPCore peripherals
* located at 0x1e000000, should use UART at 0x10009000
* - all other (RS1 complaint) tiles use UART mapped
* at 0x1c090000
*/
asm("mrc p15, 4, %0, c15, c0, 0" : "=r" (mpcore_periph));
if (mpcore_periph == 0x1e000000)
return UART_BASE;
else
return UART_BASE_RS1;
#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_CA9)
return UART_BASE;
#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_RS1)
return UART_BASE_RS1;
#else
return 0;
#endif
}
/*
* This does not append a newline
*/
static inline void putc(int c)
{
unsigned long base = get_uart_base();
if (!base)
return;
while (AMBA_UART_FR(base) & (1 << 5))
barrier();
AMBA_UART_DR(base) = c;
}
static inline void flush(void)
{
unsigned long base = get_uart_base();
if (!base)
return;
while (AMBA_UART_FR(base) & (1 << 3))
barrier();
}
/*
* nothing to do
*/
#define arch_decomp_setup()
#define arch_decomp_wdog()
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