arch/powerpc/boot/cuboot-taishan.c

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

File Facts

System
Linux kernel
Corpus path
arch/powerpc/boot/cuboot-taishan.c
Extension
.c
Size
1212 bytes
Lines
55
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 Taishan
 *
 * Author: Hugh Blemings <hugh@au.ibm.com>
 *
 * Copyright 2007 Hugh Blemings, IBM Corporation.
 *   Based on cuboot-ebony.c which is:
 * Copyright 2007 David Gibson, IBM Corporation.
 *   Based on cuboot-83xx.c, which is:
 * Copyright (c) 2007 Freescale Semiconductor, Inc.
 */

#include "ops.h"
#include "stdio.h"
#include "cuboot.h"
#include "reg.h"
#include "dcr.h"
#include "4xx.h"

#define TARGET_4xx
#define TARGET_44x
#define TARGET_440GX
#include "ppcboot.h"

static bd_t bd;

BSS_STACK(4096);

static void taishan_fixups(void)
{
	/* FIXME: sysclk should be derived by reading the FPGA
	   registers */
	unsigned long sysclk = 33000000;

	ibm440gx_fixup_clocks(sysclk, 6 * 1843200, 25000000);

	ibm4xx_sdram_fixup_memsize();

	dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
	dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);

	ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
}

void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
		   unsigned long r6, unsigned long r7)
{
	CUBOOT_INIT();

	platform_ops.fixups = taishan_fixups;
	fdt_init(_dtb_start);
	serial_console_init();
}

Annotation

Implementation Notes