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2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2007 David Gibson, IBM Corporation.
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*
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* Based on earlier code:
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* Copyright (C) Paul Mackerras 1997.
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*
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* Matt Porter <mporter@kernel.crashing.org>
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* Copyright 2002-2005 MontaVista Software Inc.
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*
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* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
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* Copyright (c) 2003, 2004 Zultys Technologies
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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 "reg.h"
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#include "io.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 *ebony_mac0, *ebony_mac1;
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#define EBONY_FPGA_PATH "/plb/opb/ebc/fpga"
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#define EBONY_FPGA_FLASH_SEL 0x01
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#define EBONY_SMALL_FLASH_PATH "/plb/opb/ebc/small-flash"
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static void ebony_flashsel_fixup(void)
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{
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void *devp;
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u32 reg[3] = {0x0, 0x0, 0x80000};
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u8 *fpga;
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u8 fpga_reg0 = 0x0;
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devp = finddevice(EBONY_FPGA_PATH);
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if (!devp)
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fatal("Couldn't locate FPGA node %s\n\r", EBONY_FPGA_PATH);
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if (getprop(devp, "virtual-reg", &fpga, sizeof(fpga)) != sizeof(fpga))
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fatal("%s has missing or invalid virtual-reg property\n\r",
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EBONY_FPGA_PATH);
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fpga_reg0 = in_8(fpga);
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devp = finddevice(EBONY_SMALL_FLASH_PATH);
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if (!devp)
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fatal("Couldn't locate small flash node %s\n\r",
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EBONY_SMALL_FLASH_PATH);
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if (getprop(devp, "reg", reg, sizeof(reg)) != sizeof(reg))
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fatal("%s has reg property of unexpected size\n\r",
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EBONY_SMALL_FLASH_PATH);
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/* Invert address bit 14 (IBM-endian) if FLASH_SEL fpga bit is set */
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if (fpga_reg0 & EBONY_FPGA_FLASH_SEL)
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reg[1] ^= 0x80000;
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setprop(devp, "reg", reg, sizeof(reg));
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}
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static void ebony_fixups(void)
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{
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// FIXME: sysclk should be derived by reading the FPGA registers
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unsigned long sysclk = 33000000;
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ibm440gp_fixup_clocks(sysclk, 6 * 1843200);
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ibm4xx_sdram_fixup_memsize();
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dt_fixup_mac_address_by_alias("ethernet0", ebony_mac0);
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dt_fixup_mac_address_by_alias("ethernet1", ebony_mac1);
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ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
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ebony_flashsel_fixup();
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}
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void ebony_init(void *mac0, void *mac1)
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{
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platform_ops.fixups = ebony_fixups;
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platform_ops.exit = ibm44x_dbcr_reset;
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ebony_mac0 = mac0;
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ebony_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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