mirror of
https://github.com/torvalds/linux
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60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
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/*
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* Old U-boot compatibility for MPC5200
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*
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* Author: Grant Likely <grant.likely@secretlab.ca>
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*
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* Copyright (c) 2007 Secret Lab Technologies Ltd.
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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 "io.h"
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#include "cuboot.h"
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#define TARGET_PPC_MPC52xx
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#include "ppcboot.h"
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static bd_t bd;
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static void platform_fixups(void)
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{
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void *soc, *reg;
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int div;
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u32 sysfreq;
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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 / 4, bd.bi_busfreq);
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/* Unfortunately, the specific model number is encoded in the
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* soc node name in existing dts files -- once that is fixed,
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* this can do a simple path lookup.
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*/
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soc = find_node_by_devtype(NULL, "soc");
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if (soc) {
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setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
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sizeof(bd.bi_ipbfreq));
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if (!dt_xlate_reg(soc, 0, (void*)®, NULL))
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return;
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div = in_8(reg + 0x204) & 0x0020 ? 8 : 4;
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sysfreq = bd.bi_busfreq * div;
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setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq));
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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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CUBOOT_INIT();
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ft_init(_dtb_start, _dtb_end - _dtb_start, 32);
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serial_console_init();
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platform_ops.fixups = platform_fixups;
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}
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