1228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds/* 2228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Copyright © 2011 Tony Breeds IBM Corporation 3228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * 4228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Based on earlier code: 5228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Copyright (C) Paul Mackerras 1997. 6228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * 7228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Matt Porter <mporter@kernel.crashing.org> 8228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Copyright 2002-2005 MontaVista Software Inc. 9228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * 10228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> 11228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Copyright (c) 2003, 2004 Zultys Technologies 12228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * 13228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Copyright 2007 David Gibson, IBM Corporation. 14228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Copyright 2010 Ben. Herrenschmidt, IBM Corporation. 15228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * Copyright © 2011 David Kleikamp IBM Corporation 16228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * 17228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * This program is free software; you can redistribute it and/or 18228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * modify it under the terms of the GNU General Public License 19228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * as published by the Free Software Foundation; either version 20228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds * 2 of the License, or (at your option) any later version. 21228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds */ 22228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include <stdarg.h> 23228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include <stddef.h> 24228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "types.h" 25228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "elf.h" 26228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "string.h" 27228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "stdio.h" 28228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "page.h" 29228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "ops.h" 30228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "reg.h" 31228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "io.h" 32228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "dcr.h" 33228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "4xx.h" 34228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "44x.h" 35228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#include "libfdt.h" 36228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 37228d55053397e6d5325ca179c7ffe331de2846d3Tony BreedsBSS_STACK(4096); 38228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 39228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#define MAX_RANKS 0x4 40228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#define DDR3_MR0CF 0x80010011U 41228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 42228d55053397e6d5325ca179c7ffe331de2846d3Tony Breedsstatic unsigned long long ibm_currituck_memsize; 43228d55053397e6d5325ca179c7ffe331de2846d3Tony Breedsstatic unsigned long long ibm_currituck_detect_memsize(void) 44228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds{ 45228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds u32 reg; 46228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds unsigned i; 47228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds unsigned long long memsize = 0; 48228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 49228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds for(i = 0; i < MAX_RANKS; i++){ 50228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds reg = mfdcrx(DDR3_MR0CF + i); 51228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 52228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds if (!(reg & 1)) 53228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds continue; 54228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 55228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds reg &= 0x0000f000; 56228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds reg >>= 12; 57228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds memsize += (0x800000ULL << reg); 58228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds } 59228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 60228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds return memsize; 61228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds} 62228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 63228d55053397e6d5325ca179c7ffe331de2846d3Tony Breedsstatic void ibm_currituck_fixups(void) 64228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds{ 65228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds void *devp = finddevice("/"); 66228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds u32 dma_ranges[7]; 67228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 68228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds dt_fixup_memory(0x0ULL, ibm_currituck_memsize); 69228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 70228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds while ((devp = find_node_by_devtype(devp, "pci"))) { 71228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds if (getprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)) < 0) { 72228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds printf("%s: Failed to get dma-ranges\r\n", __func__); 73228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds continue; 74228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds } 75228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 76228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds dma_ranges[5] = ibm_currituck_memsize >> 32; 77228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds dma_ranges[6] = ibm_currituck_memsize & 0xffffffffUL; 78228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 79228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds setprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)); 80228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds } 81228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds} 82228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 83228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds#define SPRN_PIR 0x11E /* Processor Indentification Register */ 84228d55053397e6d5325ca179c7ffe331de2846d3Tony Breedsvoid platform_init(void) 85228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds{ 86228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds unsigned long end_of_ram, avail_ram; 87228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds u32 pir_reg; 88228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds int node, size; 89228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds const u32 *timebase; 90228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 91228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds ibm_currituck_memsize = ibm_currituck_detect_memsize(); 92228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds if (ibm_currituck_memsize >> 32) 93228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds end_of_ram = ~0UL; 94228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds else 95228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds end_of_ram = ibm_currituck_memsize; 96228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds avail_ram = end_of_ram - (unsigned long)_end; 97228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 98228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds simple_alloc_init(_end, avail_ram, 128, 64); 99228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds platform_ops.fixups = ibm_currituck_fixups; 100228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds platform_ops.exit = ibm44x_dbcr_reset; 101228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds pir_reg = mfspr(SPRN_PIR); 102228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 103228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds /* Make sure FDT blob is sane */ 104228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds if (fdt_check_header(_dtb_start) != 0) 105228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds fatal("Invalid device tree blob\n"); 106228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 107228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type", 108228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds "cpu", sizeof("cpu")); 109228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds if (!node) 110228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds fatal("Cannot find cpu node\n"); 111228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size); 112228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds if (timebase && (size == 4)) 113228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds timebase_period_ns = 1000000000 / *timebase; 114228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 115228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds fdt_set_boot_cpuid_phys(_dtb_start, pir_reg); 116228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds fdt_init(_dtb_start); 117228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds 118228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds serial_console_init(); 119228d55053397e6d5325ca179c7ffe331de2846d3Tony Breeds} 120