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190de00538
This reworks the boot wrapper library function that probes the chip clocks. Better separate the base function that is used on 440GX,SPe,EP,... from the uart fixups as those need different device-tree path on different processors. Also, rework the function itself based on the arch/ppc code from Eugene Surovegin which I find more readable, and which handles one more bypass case. Also handle the subtle difference between 440EP/EPx and 440SPe/GX, on the former, PerClk is derived from the PLB clock while on the later, it's derived from the OPB. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
48 lines
1.1 KiB
C
48 lines
1.1 KiB
C
/*
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* Copyright IBM Corporation, 2007
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* Josh Boyer <jwboyer@linux.vnet.ibm.com>
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*
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* Based on ebony wrapper:
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* Copyright 2007 David Gibson, IBM Corporation.
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*
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* Clocking code based on code by:
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* Stefan Roese <sr@denx.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; version 2 of the License
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*/
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#include <stdarg.h>
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#include <stddef.h>
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#include "types.h"
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#include "elf.h"
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#include "string.h"
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#include "stdio.h"
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#include "page.h"
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#include "ops.h"
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#include "dcr.h"
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#include "4xx.h"
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#include "44x.h"
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static u8 *bamboo_mac0, *bamboo_mac1;
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static void bamboo_fixups(void)
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{
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unsigned long sysclk = 33333333;
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ibm440ep_fixup_clocks(sysclk, 11059200, 25000000);
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ibm4xx_sdram_fixup_memsize();
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ibm4xx_quiesce_eth((u32 *)0xef600e00, (u32 *)0xef600f00);
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dt_fixup_mac_addresses(bamboo_mac0, bamboo_mac1);
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}
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void bamboo_init(void *mac0, void *mac1)
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{
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platform_ops.fixups = bamboo_fixups;
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platform_ops.exit = ibm44x_dbcr_reset;
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bamboo_mac0 = mac0;
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bamboo_mac1 = mac1;
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fdt_init(_dtb_start);
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serial_console_init();
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}
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