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https://github.com/torvalds/linux
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2f0dfeaa84
This incorporates libfdt (from the source embedded in an earlier commit) into the wrapper.a library used by the bootwrapper. This includes adding a libfdt_env.h file, which the libfdt sources need in order to integrate into the bootwrapper environment, and a libfdt-wrapper.c which provides glue to connect the bootwrapper's abstract device tree callbacks to the libfdt functions. In addition, this changes the various wrapper and platform files to use libfdt functions instead of the older flatdevtree.c library. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/*
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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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fdt_init(_dtb_start);
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serial_console_init();
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platform_ops.fixups = platform_fixups;
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}
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