arch/powerpc/platforms/85xx/tqm85xx.c

Source file repositories/reference/linux-study-clean/arch/powerpc/platforms/85xx/tqm85xx.c

File Facts

System
Linux kernel
Corpus path
arch/powerpc/platforms/85xx/tqm85xx.c
Extension
.c
Size
2672 bytes
Lines
124
Domain
Architecture Layer
Bucket
arch/powerpc
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-or-later
/*
 * Based on MPC8560 ADS and arch/ppc tqm85xx ports
 *
 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
 *
 * Copyright 2008 Freescale Semiconductor Inc.
 *
 * Copyright (c) 2005-2006 DENX Software Engineering
 * Stefan Roese <sr@denx.de>
 *
 * Based on original work by
 * 	Kumar Gala <kumar.gala@freescale.com>
 *      Copyright 2004 Freescale Semiconductor Inc.
 */

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/of.h>

#include <asm/time.h>
#include <asm/machdep.h>
#include <asm/pci-bridge.h>
#include <asm/mpic.h>
#include <mm/mmu_decl.h>
#include <asm/udbg.h>

#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>

#include "mpc85xx.h"

#ifdef CONFIG_CPM2
#include <asm/cpm2.h>
#endif /* CONFIG_CPM2 */

static void __init tqm85xx_pic_init(void)
{
	struct mpic *mpic = mpic_alloc(NULL, 0,
			MPIC_BIG_ENDIAN,
			0, 256, " OpenPIC  ");
	BUG_ON(mpic == NULL);
	mpic_init(mpic);

	mpc85xx_cpm2_pic_init();
}

/*
 * Setup the architecture
 */
static void __init tqm85xx_setup_arch(void)
{
	if (ppc_md.progress)
		ppc_md.progress("tqm85xx_setup_arch()", 0);

#ifdef CONFIG_CPM2
	cpm2_reset();
#endif

	fsl_pci_assign_primary();
}

static void tqm85xx_show_cpuinfo(struct seq_file *m)
{
	uint pvid, svid, phid1;

	pvid = mfspr(SPRN_PVR);
	svid = mfspr(SPRN_SVR);

	seq_printf(m, "Vendor\t\t: TQ Components\n");
	seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
	seq_printf(m, "SVR\t\t: 0x%x\n", svid);

	/* Display cpu Pll setting */
	phid1 = mfspr(SPRN_HID1);
	seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
}

static void tqm85xx_ti1520_fixup(struct pci_dev *pdev)
{
	unsigned int val;

	/* Do not do the fixup on other platforms! */
	if (!machine_is(tqm85xx))
		return;

Annotation

Implementation Notes