xref: /kernel/linux/linux-6.6/arch/powerpc/boot/cuboot-85xx-cpm2.c (revision 62306a36)

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Old U-boot compatibility for 85xx
 *
 * Author: Scott Wood <scottwood@freescale.com>
 *
 * Copyright (c) 2007 Freescale Semiconductor, Inc.
 */

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

#define TARGET_85xx
#define TARGET_CPM2
#include "ppcboot.h"

static bd_t bd;

static void platform_fixups(void)
{
	void *devp;

	dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
	dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
	dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);
	dt_fixup_mac_address_by_alias("ethernet2", bd.bi_enet2addr);
	dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 8, bd.bi_busfreq);

	/* Unfortunately, the specific model number is encoded in the
	 * soc node name in existing dts files -- once that is fixed,
	 * this can do a simple path lookup.
	 */
	devp = find_node_by_devtype(NULL, "soc");
	if (devp) {
		void *serial = NULL;

		setprop(devp, "bus-frequency", &bd.bi_busfreq,
		        sizeof(bd.bi_busfreq));

		while ((serial = find_node_by_devtype(serial, "serial"))) {
			if (get_parent(serial) != devp)
				continue;

			setprop(serial, "clock-frequency", &bd.bi_busfreq,
			        sizeof(bd.bi_busfreq));
		}
	}

	devp = find_node_by_compatible(NULL, "fsl,cpm2-brg");
	if (devp)
		setprop(devp, "clock-frequency", &bd.bi_brgfreq,
		        sizeof(bd.bi_brgfreq));
}

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;
}