2 * linux/arch/arm/mach-omap1/io.c
4 * OMAP1 I/O mapping code
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/config.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
16 #include <asm/mach/map.h>
18 #include <asm/arch/tc.h>
20 extern int clk_init(void);
21 extern void omap_check_revision(void);
22 extern void omap_sram_init(void);
25 * The machine specific code may provide the extra mapping besides the
26 * default mapping provided here.
28 static struct map_desc omap_io_desc[] __initdata = {
29 { IO_VIRT, IO_PHYS, IO_SIZE, MT_DEVICE },
32 #ifdef CONFIG_ARCH_OMAP730
33 static struct map_desc omap730_io_desc[] __initdata = {
34 { OMAP730_DSP_BASE, OMAP730_DSP_START, OMAP730_DSP_SIZE, MT_DEVICE },
35 { OMAP730_DSPREG_BASE, OMAP730_DSPREG_START, OMAP730_DSPREG_SIZE, MT_DEVICE },
39 #ifdef CONFIG_ARCH_OMAP1510
40 static struct map_desc omap1510_io_desc[] __initdata = {
41 { OMAP1510_DSP_BASE, OMAP1510_DSP_START, OMAP1510_DSP_SIZE, MT_DEVICE },
42 { OMAP1510_DSPREG_BASE, OMAP1510_DSPREG_START, OMAP1510_DSPREG_SIZE, MT_DEVICE },
46 #if defined(CONFIG_ARCH_OMAP16XX)
47 static struct map_desc omap16xx_io_desc[] __initdata = {
48 { OMAP16XX_DSP_BASE, OMAP16XX_DSP_START, OMAP16XX_DSP_SIZE, MT_DEVICE },
49 { OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_START, OMAP16XX_DSPREG_SIZE, MT_DEVICE },
53 static int initialized = 0;
55 static void __init _omap_map_io(void)
59 /* We have to initialize the IO space mapping before we can run
60 * cpu_is_omapxxx() macros. */
61 iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc));
62 omap_check_revision();
64 #ifdef CONFIG_ARCH_OMAP730
65 if (cpu_is_omap730()) {
66 iotable_init(omap730_io_desc, ARRAY_SIZE(omap730_io_desc));
69 #ifdef CONFIG_ARCH_OMAP1510
70 if (cpu_is_omap1510()) {
71 iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc));
74 #if defined(CONFIG_ARCH_OMAP16XX)
75 if (cpu_is_omap16xx()) {
76 iotable_init(omap16xx_io_desc, ARRAY_SIZE(omap16xx_io_desc));
82 /* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
83 * on a Posted Write in the TIPB Bridge".
85 omap_writew(0x0, MPU_PUBLIC_TIPB_CNTL);
86 omap_writew(0x0, MPU_PRIVATE_TIPB_CNTL);
88 /* Must init clocks early to assure that timer interrupt works
94 * This should only get called from board specific init
96 void __init omap_map_common_io(void)