1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/arch/arm/mach-pxa/generic.c
4 *
5 * Author: Nicolas Pitre
6 * Created: Jun 15, 2001
7 * Copyright: MontaVista Software Inc.
8 *
9 * Code common to all PXA machines.
10 *
11 * Since this file should be linked before any other machine specific file,
12 * the __initcall() here will be executed first. This serves as default
13 * initialization stuff for PXA machines which can be overridden later if
14 * need be.
15 */
16 #include <linux/gpio.h>
17 #include <linux/module.h>
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/soc/pxa/cpu.h>
21 #include <linux/soc/pxa/smemc.h>
22 #include <linux/clk/pxa.h>
23
24 #include <asm/mach/map.h>
25 #include <asm/mach-types.h>
26
27 #include "addr-map.h"
28 #include "irqs.h"
29 #include "reset.h"
30 #include "smemc.h"
31 #include "pxa3xx-regs.h"
32
33 #include "generic.h"
34 #include <clocksource/pxa.h>
35
36 void clear_reset_status(unsigned int mask)
37 {
38 if (cpu_is_pxa2xx())
39 pxa2xx_clear_reset_status(mask);
40 else {
41 /* RESET_STATUS_* has a 1:1 mapping with ARSR */
42 ARSR = mask;
43 }
44 }
45
46 /*
47 * For non device-tree builds, keep legacy timer init
48 */
49 void __init pxa_timer_init(void)
50 {
51 if (cpu_is_pxa25x())
52 pxa25x_clocks_init(io_p2v(0x41300000));
53 if (cpu_is_pxa27x())
54 pxa27x_clocks_init(io_p2v(0x41300000));
55 if (cpu_is_pxa3xx())
56 pxa3xx_clocks_init(io_p2v(0x41340000), io_p2v(0x41350000));
57 pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000));
58 }
59
60 void pxa_smemc_set_pcmcia_timing(int sock, u32 mcmem, u32 mcatt, u32 mcio)
61 {
62 __raw_writel(mcmem, MCMEM(sock));
63 __raw_writel(mcatt, MCATT(sock));
64 __raw_writel(mcio, MCIO(sock));
65 }
66 EXPORT_SYMBOL_GPL(pxa_smemc_set_pcmcia_timing);
67
68 void pxa_smemc_set_pcmcia_socket(int nr)
69 {
70 switch (nr) {
71 case 0:
72 __raw_writel(0, MECR);
73 break;
74 case 1:
75 /*
76 * We have at least one socket, so set MECR:CIT
77 * (Card Is There)
78 */
79 __raw_writel(MECR_CIT, MECR);
80 break;
81 case 2:
82 /* Set CIT and MECR:NOS (Number Of Sockets) */
83 __raw_writel(MECR_CIT | MECR_NOS, MECR);
84 break;
85 }
86 }
87 EXPORT_SYMBOL_GPL(pxa_smemc_set_pcmcia_socket);
88
89 void __iomem *pxa_smemc_get_mdrefr(void)
90 {
91 return MDREFR;
92 }
93
94 /*
95 * Intel PXA2xx internal register mapping.
96 *
97 * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
98 * and cache flush area.
99 */
100 static struct map_desc common_io_desc[] __initdata = {
101 { /* Devs */
102 .virtual = (unsigned long)PERIPH_VIRT,
103 .pfn = __phys_to_pfn(PERIPH_PHYS),
104 .length = PERIPH_SIZE,
105 .type = MT_DEVICE
106 }
107 };
108
109 void __init pxa_map_io(void)
110 {
111 debug_ll_io_init();
112 iotable_init(ARRAY_AND_SIZE(common_io_desc));
113 }
114
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.