cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

cuboot-52xx.c (1511B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Old U-boot compatibility for MPC5200
      4 *
      5 * Author: Grant Likely <grant.likely@secretlab.ca>
      6 *
      7 * Copyright (c) 2007 Secret Lab Technologies Ltd.
      8 * Copyright (c) 2007 Freescale Semiconductor, Inc.
      9 */
     10
     11#include "ops.h"
     12#include "stdio.h"
     13#include "io.h"
     14#include "cuboot.h"
     15
     16#define TARGET_PPC_MPC52xx
     17#include "ppcboot.h"
     18
     19static bd_t bd;
     20
     21static void platform_fixups(void)
     22{
     23	void *soc, *reg;
     24	int div;
     25	u32 sysfreq;
     26
     27
     28	dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
     29	dt_fixup_mac_addresses(bd.bi_enetaddr);
     30	dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);
     31
     32	/* Unfortunately, the specific model number is encoded in the
     33	 * soc node name in existing dts files -- once that is fixed,
     34	 * this can do a simple path lookup.
     35	 */
     36	soc = find_node_by_devtype(NULL, "soc");
     37	if (!soc)
     38		soc = find_node_by_compatible(NULL, "fsl,mpc5200-immr");
     39	if (!soc)
     40		soc = find_node_by_compatible(NULL, "fsl,mpc5200b-immr");
     41	if (soc) {
     42		setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
     43			sizeof(bd.bi_ipbfreq));
     44
     45		if (!dt_xlate_reg(soc, 0, (void*)&reg, NULL))
     46			return;
     47		div = in_8(reg + 0x204) & 0x0020 ? 8 : 4;
     48		sysfreq = bd.bi_busfreq * div;
     49		setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq));
     50	}
     51}
     52
     53void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
     54                   unsigned long r6, unsigned long r7)
     55{
     56	CUBOOT_INIT();
     57	fdt_init(_dtb_start);
     58	serial_console_init();
     59	platform_ops.fixups = platform_fixups;
     60}