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

redboot-83xx.c (1297B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * RedBoot firmware support
      4 *
      5 * Author: Scott Wood <scottwood@freescale.com>
      6 *
      7 * Copyright (c) 2007 Freescale Semiconductor, Inc.
      8 * Copyright (c) 2008 Codehermit
      9 */
     10
     11#include "ops.h"
     12#include "stdio.h"
     13#include "redboot.h"
     14#include "fsl-soc.h"
     15#include "io.h"
     16
     17static bd_t bd;
     18BSS_STACK(4096);
     19
     20#define MHZ(x)	((x + 500000) / 1000000)
     21
     22static void platform_fixups(void)
     23{
     24	void *node;
     25
     26	dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
     27	dt_fixup_mac_addresses(bd.bi_enetaddr);
     28	dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq);
     29
     30	node = finddevice("/soc/cpm/brg");
     31	if (node) {
     32		printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n",
     33		       bd.bi_busfreq, MHZ(bd.bi_busfreq));
     34		setprop(node, "clock-frequency",  &bd.bi_busfreq, 4);
     35	}
     36
     37}
     38
     39void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
     40		   unsigned long r6, unsigned long r7)
     41{
     42	memcpy(&bd, (char *)r3, sizeof(bd));
     43
     44	if (bd.bi_tag != 0x42444944)
     45		return;
     46
     47	simple_alloc_init(_end,
     48			  bd.bi_memstart + bd.bi_memsize - (unsigned long)_end,
     49			  32, 64);
     50
     51	fdt_init(_dtb_start);
     52	serial_console_init();
     53	platform_ops.fixups = platform_fixups;
     54
     55	loader_info.cmdline = (char *)bd.bi_cmdline;
     56	loader_info.cmdline_len = strlen((char *)bd.bi_cmdline);
     57}