1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/arch/arm/mach-pxa/generic.c
5 * Author: Nicolas Pitre
6 * Created: Jun 15, 2001
7 * Copyright: MontaVista Software Inc.
9 * Code common to all PXA machines.
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
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>
24 #include <asm/mach/map.h>
25 #include <asm/mach-types.h>
31 #include "pxa3xx-regs.h"
34 #include <clocksource/pxa.h>
36 void clear_reset_status(unsigned int mask)
39 pxa2xx_clear_reset_status(mask);
41 /* RESET_STATUS_* has a 1:1 mapping with ARSR */
47 * For non device-tree builds, keep legacy timer init
49 void __init pxa_timer_init(void)
52 pxa25x_clocks_init(io_p2v(0x41300000));
54 pxa27x_clocks_init(io_p2v(0x41300000));
56 pxa3xx_clocks_init(io_p2v(0x41340000), io_p2v(0x41350000));
57 pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000));
60 void pxa_smemc_set_pcmcia_timing(int sock, u32 mcmem, u32 mcatt, u32 mcio)
62 __raw_writel(mcmem, MCMEM(sock));
63 __raw_writel(mcatt, MCATT(sock));
64 __raw_writel(mcio, MCIO(sock));
66 EXPORT_SYMBOL_GPL(pxa_smemc_set_pcmcia_timing);
68 void pxa_smemc_set_pcmcia_socket(int nr)
72 __raw_writel(0, MECR);
76 * We have at least one socket, so set MECR:CIT
79 __raw_writel(MECR_CIT, MECR);
82 /* Set CIT and MECR:NOS (Number Of Sockets) */
83 __raw_writel(MECR_CIT | MECR_NOS, MECR);
87 EXPORT_SYMBOL_GPL(pxa_smemc_set_pcmcia_socket);
89 void __iomem *pxa_smemc_get_mdrefr(void)
95 * Intel PXA2xx internal register mapping.
97 * Note: virtual 0xfffe0000-0xffffffff is reserved for the vector table
98 * and cache flush area.
100 static struct map_desc common_io_desc[] __initdata = {
102 .virtual = (unsigned long)PERIPH_VIRT,
103 .pfn = __phys_to_pfn(PERIPH_PHYS),
104 .length = PERIPH_SIZE,
109 void __init pxa_map_io(void)
112 iotable_init(ARRAY_AND_SIZE(common_io_desc));