arch/sh/kernel/cpu/sh3/setup-sh7710.c

Source file repositories/reference/linux-study-clean/arch/sh/kernel/cpu/sh3/setup-sh7710.c

File Facts

System
Linux kernel
Corpus path
arch/sh/kernel/cpu/sh3/setup-sh7710.c
Extension
.c
Size
4834 bytes
Lines
190
Domain
Architecture Layer
Bucket
arch/sh
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * SH3 Setup code for SH7710, SH7712
 *
 *  Copyright (C) 2006 - 2009  Paul Mundt
 *  Copyright (C) 2007  Nobuhiro Iwamatsu
 */
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/serial.h>
#include <linux/serial_sci.h>
#include <linux/sh_timer.h>
#include <linux/sh_intc.h>
#include <asm/rtc.h>
#include <asm/platform_early.h>

enum {
	UNUSED = 0,

	/* interrupt sources */
	IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5,
	DMAC1, SCIF0, SCIF1, DMAC2, IPSEC,
	EDMAC0, EDMAC1, EDMAC2,
	SIOF0, SIOF1,

	TMU0, TMU1, TMU2,
	RTC, WDT, REF,
};

static struct intc_vect vectors[] __initdata = {
	/* IRQ0->5 are handled in setup-sh3.c */
	INTC_VECT(DMAC1, 0x800), INTC_VECT(DMAC1, 0x820),
	INTC_VECT(DMAC1, 0x840), INTC_VECT(DMAC1, 0x860),
	INTC_VECT(SCIF0, 0x880), INTC_VECT(SCIF0, 0x8a0),
	INTC_VECT(SCIF0, 0x8c0), INTC_VECT(SCIF0, 0x8e0),
	INTC_VECT(SCIF1, 0x900), INTC_VECT(SCIF1, 0x920),
	INTC_VECT(SCIF1, 0x940), INTC_VECT(SCIF1, 0x960),
	INTC_VECT(DMAC2, 0xb80), INTC_VECT(DMAC2, 0xba0),
#ifdef CONFIG_CPU_SUBTYPE_SH7710
	INTC_VECT(IPSEC, 0xbe0),
#endif
	INTC_VECT(EDMAC0, 0xc00), INTC_VECT(EDMAC1, 0xc20),
	INTC_VECT(EDMAC2, 0xc40),
	INTC_VECT(SIOF0, 0xe00), INTC_VECT(SIOF0, 0xe20),
	INTC_VECT(SIOF0, 0xe40), INTC_VECT(SIOF0, 0xe60),
	INTC_VECT(SIOF1, 0xe80), INTC_VECT(SIOF1, 0xea0),
	INTC_VECT(SIOF1, 0xec0), INTC_VECT(SIOF1, 0xee0),
	INTC_VECT(TMU0, 0x400), INTC_VECT(TMU1, 0x420),
	INTC_VECT(TMU2, 0x440),
	INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
	INTC_VECT(RTC, 0x4c0),
	INTC_VECT(WDT, 0x560),
	INTC_VECT(REF, 0x580),
};

static struct intc_prio_reg prio_registers[] __initdata = {
	{ 0xfffffee2, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
	{ 0xfffffee4, 0, 16, 4, /* IPRB */ { WDT, REF, 0, 0 } },
	{ 0xa4000016, 0, 16, 4, /* IPRC */ { IRQ3, IRQ2, IRQ1, IRQ0 } },
	{ 0xa4000018, 0, 16, 4, /* IPRD */ { 0, 0, IRQ5, IRQ4 } },
	{ 0xa400001a, 0, 16, 4, /* IPRE */ { DMAC1, SCIF0, SCIF1 } },
	{ 0xa4080000, 0, 16, 4, /* IPRF */ { IPSEC, DMAC2 } },
	{ 0xa4080002, 0, 16, 4, /* IPRG */ { EDMAC0, EDMAC1, EDMAC2 } },
	{ 0xa4080004, 0, 16, 4, /* IPRH */ { 0, 0, 0, SIOF0 } },
	{ 0xa4080006, 0, 16, 4, /* IPRI */ { 0, 0, SIOF1 } },
};

static DECLARE_INTC_DESC(intc_desc, "sh7710", vectors, NULL,
			 NULL, prio_registers, NULL);

static struct resource rtc_resources[] = {
	[0] =	{
		.start	= 0xa413fec0,
		.end	= 0xa413fec0 + 0x1e,
		.flags  = IORESOURCE_IO,
	},
	[1] =	{
		.start  = evt2irq(0x480),
		.flags	= IORESOURCE_IRQ,
	},
};

static struct sh_rtc_platform_info rtc_info = {
	.capabilities	= RTC_CAP_4_DIGIT_YEAR,
};

static struct platform_device rtc_device = {
	.name		= "sh-rtc",
	.id		= -1,

Annotation

Implementation Notes