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/mux.h>
19 #include <asm/arch/tc.h>
21 extern int omap1_clk_init(void);
22 extern void omap_check_revision(void);
23 extern void omap_sram_init(void);
26 * The machine specific code may provide the extra mapping besides the
27 * default mapping provided here.
29 static struct map_desc omap_io_desc[] __initdata = {
30 { IO_VIRT, IO_PHYS, IO_SIZE, MT_DEVICE },
33 #ifdef CONFIG_ARCH_OMAP730
34 static struct map_desc omap730_io_desc[] __initdata = {
35 { OMAP730_DSP_BASE, OMAP730_DSP_START, OMAP730_DSP_SIZE, MT_DEVICE },
36 { OMAP730_DSPREG_BASE, OMAP730_DSPREG_START, OMAP730_DSPREG_SIZE, MT_DEVICE },
40 #ifdef CONFIG_ARCH_OMAP15XX
41 static struct map_desc omap1510_io_desc[] __initdata = {
42 { OMAP1510_DSP_BASE, OMAP1510_DSP_START, OMAP1510_DSP_SIZE, MT_DEVICE },
43 { OMAP1510_DSPREG_BASE, OMAP1510_DSPREG_START, OMAP1510_DSPREG_SIZE, MT_DEVICE },
47 #if defined(CONFIG_ARCH_OMAP16XX)
48 static struct map_desc omap16xx_io_desc[] __initdata = {
49 { OMAP16XX_DSP_BASE, OMAP16XX_DSP_START, OMAP16XX_DSP_SIZE, MT_DEVICE },
50 { OMAP16XX_DSPREG_BASE, OMAP16XX_DSPREG_START, OMAP16XX_DSPREG_SIZE, MT_DEVICE },
54 static int initialized = 0;
56 static void __init _omap_map_io(void)
60 /* We have to initialize the IO space mapping before we can run
61 * cpu_is_omapxxx() macros. */
62 iotable_init(omap_io_desc, ARRAY_SIZE(omap_io_desc));
63 omap_check_revision();
65 #ifdef CONFIG_ARCH_OMAP730
66 if (cpu_is_omap730()) {
67 iotable_init(omap730_io_desc, ARRAY_SIZE(omap730_io_desc));
70 #ifdef CONFIG_ARCH_OMAP15XX
71 if (cpu_is_omap1510()) {
72 iotable_init(omap1510_io_desc, ARRAY_SIZE(omap1510_io_desc));
75 #if defined(CONFIG_ARCH_OMAP16XX)
76 if (cpu_is_omap16xx()) {
77 iotable_init(omap16xx_io_desc, ARRAY_SIZE(omap16xx_io_desc));
83 /* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
84 * on a Posted Write in the TIPB Bridge".
86 omap_writew(0x0, MPU_PUBLIC_TIPB_CNTL);
87 omap_writew(0x0, MPU_PRIVATE_TIPB_CNTL);
89 /* Must init clocks early to assure that timer interrupt works
95 * This should only get called from board specific init
97 void __init omap_map_common_io(void)