aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-arm/arch-at91/hardware.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-arm/arch-at91/hardware.h')
-rw-r--r--include/asm-arm/arch-at91/hardware.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/include/asm-arm/arch-at91/hardware.h b/include/asm-arm/arch-at91/hardware.h
new file mode 100644
index 000000000000..28133e0154dd
--- /dev/null
+++ b/include/asm-arm/arch-at91/hardware.h
@@ -0,0 +1,90 @@
1/*
2 * include/asm-arm/arch-at91/hardware.h
3 *
4 * Copyright (C) 2003 SAN People
5 * Copyright (C) 2003 ATMEL
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 */
13
14#ifndef __ASM_ARCH_HARDWARE_H
15#define __ASM_ARCH_HARDWARE_H
16
17#include <asm/sizes.h>
18
19#if defined(CONFIG_ARCH_AT91RM9200)
20#include <asm/arch/at91rm9200.h>
21#elif defined(CONFIG_ARCH_AT91SAM9260)
22#include <asm/arch/at91sam9260.h>
23#elif defined(CONFIG_ARCH_AT91SAM9261)
24#include <asm/arch/at91sam9261.h>
25#elif defined(CONFIG_ARCH_AT91SAM9263)
26#include <asm/arch/at91sam9263.h>
27#else
28#error "Unsupported AT91 processor"
29#endif
30
31
32/*
33 * Remap the peripherals from address 0xFFF78000 .. 0xFFFFFFFF
34 * to 0xFEF78000 .. 0xFF000000. (544Kb)
35 */
36#define AT91_IO_PHYS_BASE 0xFFF78000
37#define AT91_IO_SIZE (0xFFFFFFFF - AT91_IO_PHYS_BASE + 1)
38#define AT91_IO_VIRT_BASE (0xFF000000 - AT91_IO_SIZE)
39
40 /* Convert a physical IO address to virtual IO address */
41#define AT91_IO_P2V(x) ((x) - AT91_IO_PHYS_BASE + AT91_IO_VIRT_BASE)
42
43/*
44 * Virtual to Physical Address mapping for IO devices.
45 */
46#define AT91_VA_BASE_SYS AT91_IO_P2V(AT91_BASE_SYS)
47#define AT91_VA_BASE_EMAC AT91_IO_P2V(AT91RM9200_BASE_EMAC)
48
49 /* Internal SRAM is mapped below the IO devices */
50#define AT91_SRAM_MAX SZ_1M
51#define AT91_VIRT_BASE (AT91_IO_VIRT_BASE - AT91_SRAM_MAX)
52
53/* Serial ports */
54#define ATMEL_MAX_UART 7 /* 6 USART3's and one DBGU port (SAM9260) */
55
56/* External Memory Map */
57#define AT91_CHIPSELECT_0 0x10000000
58#define AT91_CHIPSELECT_1 0x20000000
59#define AT91_CHIPSELECT_2 0x30000000
60#define AT91_CHIPSELECT_3 0x40000000
61#define AT91_CHIPSELECT_4 0x50000000
62#define AT91_CHIPSELECT_5 0x60000000
63#define AT91_CHIPSELECT_6 0x70000000
64#define AT91_CHIPSELECT_7 0x80000000
65
66/* SDRAM */
67#define AT91_SDRAM_BASE AT91_CHIPSELECT_1
68
69/* Clocks */
70#define AT91_SLOW_CLOCK 32768 /* slow clock */
71
72#ifndef __ASSEMBLY__
73#include <asm/io.h>
74
75static inline unsigned int at91_sys_read(unsigned int reg_offset)
76{
77 void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
78
79 return __raw_readl(addr + reg_offset);
80}
81
82static inline void at91_sys_write(unsigned int reg_offset, unsigned long value)
83{
84 void __iomem *addr = (void __iomem *)AT91_VA_BASE_SYS;
85
86 __raw_writel(value, addr + reg_offset);
87}
88#endif
89
90#endif