1228d5505STony Breeds /* 2228d5505STony Breeds * Copyright © 2011 Tony Breeds IBM Corporation 3228d5505STony Breeds * 4228d5505STony Breeds * Based on earlier code: 5228d5505STony Breeds * Copyright (C) Paul Mackerras 1997. 6228d5505STony Breeds * 7228d5505STony Breeds * Matt Porter <mporter@kernel.crashing.org> 8228d5505STony Breeds * Copyright 2002-2005 MontaVista Software Inc. 9228d5505STony Breeds * 10228d5505STony Breeds * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> 11228d5505STony Breeds * Copyright (c) 2003, 2004 Zultys Technologies 12228d5505STony Breeds * 13228d5505STony Breeds * Copyright 2007 David Gibson, IBM Corporation. 14228d5505STony Breeds * Copyright 2010 Ben. Herrenschmidt, IBM Corporation. 15228d5505STony Breeds * Copyright © 2011 David Kleikamp IBM Corporation 16228d5505STony Breeds * 17228d5505STony Breeds * This program is free software; you can redistribute it and/or 18228d5505STony Breeds * modify it under the terms of the GNU General Public License 19228d5505STony Breeds * as published by the Free Software Foundation; either version 20228d5505STony Breeds * 2 of the License, or (at your option) any later version. 21228d5505STony Breeds */ 22228d5505STony Breeds #include <stdarg.h> 23228d5505STony Breeds #include <stddef.h> 24228d5505STony Breeds #include "types.h" 25228d5505STony Breeds #include "elf.h" 26228d5505STony Breeds #include "string.h" 27228d5505STony Breeds #include "stdio.h" 28228d5505STony Breeds #include "page.h" 29228d5505STony Breeds #include "ops.h" 30228d5505STony Breeds #include "reg.h" 31228d5505STony Breeds #include "io.h" 32228d5505STony Breeds #include "dcr.h" 33228d5505STony Breeds #include "4xx.h" 34228d5505STony Breeds #include "44x.h" 35228d5505STony Breeds #include "libfdt.h" 36228d5505STony Breeds 37228d5505STony Breeds BSS_STACK(4096); 38228d5505STony Breeds 39228d5505STony Breeds #define MAX_RANKS 0x4 40228d5505STony Breeds #define DDR3_MR0CF 0x80010011U 41228d5505STony Breeds 42228d5505STony Breeds static unsigned long long ibm_currituck_memsize; 43228d5505STony Breeds static unsigned long long ibm_currituck_detect_memsize(void) 44228d5505STony Breeds { 45228d5505STony Breeds u32 reg; 46228d5505STony Breeds unsigned i; 47228d5505STony Breeds unsigned long long memsize = 0; 48228d5505STony Breeds 49228d5505STony Breeds for(i = 0; i < MAX_RANKS; i++){ 50228d5505STony Breeds reg = mfdcrx(DDR3_MR0CF + i); 51228d5505STony Breeds 52228d5505STony Breeds if (!(reg & 1)) 53228d5505STony Breeds continue; 54228d5505STony Breeds 55228d5505STony Breeds reg &= 0x0000f000; 56228d5505STony Breeds reg >>= 12; 57228d5505STony Breeds memsize += (0x800000ULL << reg); 58228d5505STony Breeds } 59228d5505STony Breeds 60228d5505STony Breeds return memsize; 61228d5505STony Breeds } 62228d5505STony Breeds 63228d5505STony Breeds static void ibm_currituck_fixups(void) 64228d5505STony Breeds { 65228d5505STony Breeds void *devp = finddevice("/"); 66228d5505STony Breeds u32 dma_ranges[7]; 67228d5505STony Breeds 68228d5505STony Breeds dt_fixup_memory(0x0ULL, ibm_currituck_memsize); 69228d5505STony Breeds 70228d5505STony Breeds while ((devp = find_node_by_devtype(devp, "pci"))) { 71228d5505STony Breeds if (getprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)) < 0) { 72228d5505STony Breeds printf("%s: Failed to get dma-ranges\r\n", __func__); 73228d5505STony Breeds continue; 74228d5505STony Breeds } 75228d5505STony Breeds 76228d5505STony Breeds dma_ranges[5] = ibm_currituck_memsize >> 32; 77228d5505STony Breeds dma_ranges[6] = ibm_currituck_memsize & 0xffffffffUL; 78228d5505STony Breeds 79228d5505STony Breeds setprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)); 80228d5505STony Breeds } 81228d5505STony Breeds } 82228d5505STony Breeds 83*446957baSAdam Buchbinder #define SPRN_PIR 0x11E /* Processor Identification Register */ 84228d5505STony Breeds void platform_init(void) 85228d5505STony Breeds { 86228d5505STony Breeds unsigned long end_of_ram, avail_ram; 87228d5505STony Breeds u32 pir_reg; 88228d5505STony Breeds int node, size; 89228d5505STony Breeds const u32 *timebase; 90228d5505STony Breeds 91228d5505STony Breeds ibm_currituck_memsize = ibm_currituck_detect_memsize(); 92228d5505STony Breeds if (ibm_currituck_memsize >> 32) 93228d5505STony Breeds end_of_ram = ~0UL; 94228d5505STony Breeds else 95228d5505STony Breeds end_of_ram = ibm_currituck_memsize; 96228d5505STony Breeds avail_ram = end_of_ram - (unsigned long)_end; 97228d5505STony Breeds 98228d5505STony Breeds simple_alloc_init(_end, avail_ram, 128, 64); 99228d5505STony Breeds platform_ops.fixups = ibm_currituck_fixups; 100228d5505STony Breeds platform_ops.exit = ibm44x_dbcr_reset; 101228d5505STony Breeds pir_reg = mfspr(SPRN_PIR); 102228d5505STony Breeds 103228d5505STony Breeds /* Make sure FDT blob is sane */ 104228d5505STony Breeds if (fdt_check_header(_dtb_start) != 0) 105228d5505STony Breeds fatal("Invalid device tree blob\n"); 106228d5505STony Breeds 107228d5505STony Breeds node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type", 108228d5505STony Breeds "cpu", sizeof("cpu")); 109228d5505STony Breeds if (!node) 110228d5505STony Breeds fatal("Cannot find cpu node\n"); 111228d5505STony Breeds timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size); 112228d5505STony Breeds if (timebase && (size == 4)) 113228d5505STony Breeds timebase_period_ns = 1000000000 / *timebase; 114228d5505STony Breeds 115228d5505STony Breeds fdt_set_boot_cpuid_phys(_dtb_start, pir_reg); 116228d5505STony Breeds fdt_init(_dtb_start); 117228d5505STony Breeds 118228d5505STony Breeds serial_console_init(); 119228d5505STony Breeds } 120