arch/powerpc/boot/cuboot-8xx.c

Source file repositories/reference/linux-study-clean/arch/powerpc/boot/cuboot-8xx.c

File Facts

System
Linux kernel
Corpus path
arch/powerpc/boot/cuboot-8xx.c
Extension
.c
Size
1000 bytes
Lines
45
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-only
/*
 * Old U-boot compatibility for 8xx
 *
 * Author: Scott Wood <scottwood@freescale.com>
 *
 * Copyright (c) 2007 Freescale Semiconductor, Inc.
 */

#include "ops.h"
#include "stdio.h"
#include "cuboot.h"

#define TARGET_8xx
#define TARGET_HAS_ETH1
#include "ppcboot.h"

static bd_t bd;

static void platform_fixups(void)
{
	void *node;

	dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
	dt_fixup_mac_addresses(bd.bi_enetaddr, bd.bi_enet1addr);
	dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq);

	node = finddevice("/soc/cpm");
	if (node)
		setprop(node, "clock-frequency", &bd.bi_busfreq, 4);

	node = finddevice("/soc/cpm/brg");
	if (node)
		setprop(node, "clock-frequency",  &bd.bi_busfreq, 4);
}

void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
                   unsigned long r6, unsigned long r7)
{
	CUBOOT_INIT();
	fdt_init(_dtb_start);
	serial_console_init();
	platform_ops.fixups = platform_fixups;
}

Annotation

Implementation Notes