59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
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/*
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* RedBoot firmware support
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*
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* Author: Scott Wood <scottwood@freescale.com>
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*
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* Copyright (c) 2007 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*/
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#include "ops.h"
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#include "stdio.h"
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#include "redboot.h"
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#include "fsl-soc.h"
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#include "io.h"
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static bd_t bd;
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BSS_STACK(4096);
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#define MHZ(x) ((x + 500000) / 1000000)
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static void platform_fixups(void)
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{
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void *node;
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dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
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dt_fixup_mac_addresses(bd.bi_enetaddr);
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dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq);
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node = finddevice("/soc/cpm/brg");
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if (node) {
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printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n",
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bd.bi_busfreq, MHZ(bd.bi_busfreq));
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setprop(node, "clock-frequency", &bd.bi_busfreq, 4);
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}
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}
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void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
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unsigned long r6, unsigned long r7)
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{
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memcpy(&bd, (char *)r3, sizeof(bd));
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if (bd.bi_tag != 0x42444944)
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return;
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simple_alloc_init(_end,
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bd.bi_memstart + bd.bi_memsize - (unsigned long)_end,
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32, 64);
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fdt_init(_dtb_start);
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serial_console_init();
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platform_ops.fixups = platform_fixups;
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loader_info.cmdline = (char *)bd.bi_cmdline;
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loader_info.cmdline_len = strlen((char *)bd.bi_cmdline);
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}
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