tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * linux/include/asm-arm/arch-realview/uncompress.h
3 *
4 * Copyright (C) 2003 ARM Limited
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20#include <asm/hardware.h>
21#include <asm/mach-types.h>
22
23#include <asm/arch/board-eb.h>
24#include <asm/arch/board-pb11mp.h>
25#include <asm/arch/board-pb1176.h>
26
27#define AMBA_UART_DR(base) (*(volatile unsigned char *)((base) + 0x00))
28#define AMBA_UART_LCRH(base) (*(volatile unsigned char *)((base) + 0x2c))
29#define AMBA_UART_CR(base) (*(volatile unsigned char *)((base) + 0x30))
30#define AMBA_UART_FR(base) (*(volatile unsigned char *)((base) + 0x18))
31
32/*
33 * Return the UART base address
34 */
35static inline unsigned long get_uart_base(void)
36{
37 if (machine_is_realview_eb())
38 return REALVIEW_EB_UART0_BASE;
39 else if (machine_is_realview_pb11mp())
40 return REALVIEW_PB11MP_UART0_BASE;
41 else if (machine_is_realview_pb1176())
42 return REALVIEW_PB1176_UART0_BASE;
43 else
44 return 0;
45}
46
47/*
48 * This does not append a newline
49 */
50static inline void putc(int c)
51{
52 unsigned long base = get_uart_base();
53
54 while (AMBA_UART_FR(base) & (1 << 5))
55 barrier();
56
57 AMBA_UART_DR(base) = c;
58}
59
60static inline void flush(void)
61{
62 unsigned long base = get_uart_base();
63
64 while (AMBA_UART_FR(base) & (1 << 3))
65 barrier();
66}
67
68/*
69 * nothing to do
70 */
71#define arch_decomp_setup()
72#define arch_decomp_wdog()