/* * Copyright 2007 David Gibson, IBM Corporation. * * Based on earlier code: * Copyright (C) Paul Mackerras 1997. * * Matt Porter <mporter@kernel.crashing.org> * Copyright 2002-2005 MontaVista Software Inc. * * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> * Copyright (c) 2003, 2004 Zultys Technologies * * 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. */ #include <stdarg.h> #include <stddef.h> #include "types.h" #include "elf.h" #include "string.h" #include "stdio.h" #include "page.h" #include "ops.h" #include "reg.h" #include "io.h" #include "dcr.h" #include "4xx.h" #include "44x.h" static u8 *ebony_mac0, *ebony_mac1; #define EBONY_FPGA_PATH "/plb/opb/ebc/fpga" #define EBONY_FPGA_FLASH_SEL 0x01 #define EBONY_SMALL_FLASH_PATH "/plb/opb/ebc/small-flash" static void ebony_flashsel_fixup(void) { void *devp; u32 reg[3] = {0x0, 0x0, 0x80000}; u8 *fpga; u8 fpga_reg0 = 0x0; devp = finddevice(EBONY_FPGA_PATH); if (!devp) fatal("Couldn't locate FPGA node %s\n\r", EBONY_FPGA_PATH); if (getprop(devp, "virtual-reg", &fpga, sizeof(fpga)) != sizeof(fpga)) fatal("%s has missing or invalid virtual-reg property\n\r", EBONY_FPGA_PATH); fpga_reg0 = in_8(fpga); devp = finddevice(EBONY_SMALL_FLASH_PATH); if (!devp) fatal("Couldn't locate small flash node %s\n\r", EBONY_SMALL_FLASH_PATH); if (getprop(devp, "reg", reg, sizeof(reg)) != sizeof(reg)) fatal("%s has reg property of unexpected size\n\r", EBONY_SMALL_FLASH_PATH); /* Invert address bit 14 (IBM-endian) if FLASH_SEL fpga bit is set */ if (fpga_reg0 & EBONY_FPGA_FLASH_SEL) reg[1] ^= 0x80000; setprop(devp, "reg", reg, sizeof(reg)); } static void ebony_fixups(void) { // FIXME: sysclk should be derived by reading the FPGA registers unsigned long sysclk = 33000000; ibm440gp_fixup_clocks(sysclk, 6 * 1843200); ibm4xx_sdram_fixup_memsize(); dt_fixup_mac_address_by_alias("ethernet0", ebony_mac0); dt_fixup_mac_address_by_alias("ethernet1", ebony_mac1); ibm4xx_fixup_ebc_ranges("/plb/opb/ebc"); ebony_flashsel_fixup(); } void ebony_init(void *mac0, void *mac1) { platform_ops.fixups = ebony_fixups; platform_ops.exit = ibm44x_dbcr_reset; ebony_mac0 = mac0; ebony_mac1 = mac1; fdt_init(_dtb_start); serial_console_init(); }