1 #ifndef _POWERPC_PROM_H 2 #define _POWERPC_PROM_H 3 #ifdef __KERNEL__ 4 5 /* 6 * Definitions for talking to the Open Firmware PROM on 7 * Power Macintosh computers. 8 * 9 * Copyright (C) 1996-2005 Paul Mackerras. 10 * 11 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp. 12 * 13 * This program is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License 15 * as published by the Free Software Foundation; either version 16 * 2 of the License, or (at your option) any later version. 17 */ 18 #include <linux/types.h> 19 #include <asm/irq.h> 20 #include <linux/atomic.h> 21 22 /* These includes should be removed once implicit includes are cleaned up. */ 23 #include <linux/of.h> 24 #include <linux/of_fdt.h> 25 #include <linux/of_address.h> 26 #include <linux/of_irq.h> 27 #include <linux/platform_device.h> 28 29 #define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */ 30 #define OF_DT_END_NODE 0x2 /* End node */ 31 #define OF_DT_PROP 0x3 /* Property: name off, size, 32 * content */ 33 #define OF_DT_NOP 0x4 /* nop */ 34 #define OF_DT_END 0x9 35 36 #define OF_DT_VERSION 0x10 37 38 /* 39 * This is what gets passed to the kernel by prom_init or kexec 40 * 41 * The dt struct contains the device tree structure, full pathes and 42 * property contents. The dt strings contain a separate block with just 43 * the strings for the property names, and is fully page aligned and 44 * self contained in a page, so that it can be kept around by the kernel, 45 * each property name appears only once in this page (cheap compression) 46 * 47 * the mem_rsvmap contains a map of reserved ranges of physical memory, 48 * passing it here instead of in the device-tree itself greatly simplifies 49 * the job of everybody. It's just a list of u64 pairs (base/size) that 50 * ends when size is 0 51 */ 52 struct boot_param_header { 53 __be32 magic; /* magic word OF_DT_HEADER */ 54 __be32 totalsize; /* total size of DT block */ 55 __be32 off_dt_struct; /* offset to structure */ 56 __be32 off_dt_strings; /* offset to strings */ 57 __be32 off_mem_rsvmap; /* offset to memory reserve map */ 58 __be32 version; /* format version */ 59 __be32 last_comp_version; /* last compatible version */ 60 /* version 2 fields below */ 61 __be32 boot_cpuid_phys; /* Physical CPU id we're booting on */ 62 /* version 3 fields below */ 63 __be32 dt_strings_size; /* size of the DT strings block */ 64 /* version 17 fields below */ 65 __be32 dt_struct_size; /* size of the DT structure block */ 66 }; 67 68 /* 69 * OF address retreival & translation 70 */ 71 72 /* Parse the ibm,dma-window property of an OF node into the busno, phys and 73 * size parameters. 74 */ 75 void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window, 76 unsigned long *busno, unsigned long *phys, 77 unsigned long *size); 78 79 extern void of_instantiate_rtc(void); 80 81 extern int of_get_ibm_chip_id(struct device_node *np); 82 83 /* The of_drconf_cell struct defines the layout of the LMB array 84 * specified in the device tree property 85 * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory 86 */ 87 struct of_drconf_cell { 88 u64 base_addr; 89 u32 drc_index; 90 u32 reserved; 91 u32 aa_index; 92 u32 flags; 93 }; 94 95 #define DRCONF_MEM_ASSIGNED 0x00000008 96 #define DRCONF_MEM_AI_INVALID 0x00000040 97 #define DRCONF_MEM_RESERVED 0x00000080 98 99 /* 100 * There are two methods for telling firmware what our capabilities are. 101 * Newer machines have an "ibm,client-architecture-support" method on the 102 * root node. For older machines, we have to call the "process-elf-header" 103 * method in the /packages/elf-loader node, passing it a fake 32-bit 104 * ELF header containing a couple of PT_NOTE sections that contain 105 * structures that contain various information. 106 */ 107 108 /* New method - extensible architecture description vector. */ 109 110 /* Option vector bits - generic bits in byte 1 */ 111 #define OV_IGNORE 0x80 /* ignore this vector */ 112 #define OV_CESSATION_POLICY 0x40 /* halt if unsupported option present*/ 113 114 /* Option vector 1: processor architectures supported */ 115 #define OV1_PPC_2_00 0x80 /* set if we support PowerPC 2.00 */ 116 #define OV1_PPC_2_01 0x40 /* set if we support PowerPC 2.01 */ 117 #define OV1_PPC_2_02 0x20 /* set if we support PowerPC 2.02 */ 118 #define OV1_PPC_2_03 0x10 /* set if we support PowerPC 2.03 */ 119 #define OV1_PPC_2_04 0x08 /* set if we support PowerPC 2.04 */ 120 #define OV1_PPC_2_05 0x04 /* set if we support PowerPC 2.05 */ 121 #define OV1_PPC_2_06 0x02 /* set if we support PowerPC 2.06 */ 122 #define OV1_PPC_2_07 0x01 /* set if we support PowerPC 2.07 */ 123 124 /* Option vector 2: Open Firmware options supported */ 125 #define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */ 126 127 /* Option vector 3: processor options supported */ 128 #define OV3_FP 0x80 /* floating point */ 129 #define OV3_VMX 0x40 /* VMX/Altivec */ 130 #define OV3_DFP 0x20 /* decimal FP */ 131 132 /* Option vector 4: IBM PAPR implementation */ 133 #define OV4_MIN_ENT_CAP 0x01 /* minimum VP entitled capacity */ 134 135 /* Option vector 5: PAPR/OF options supported 136 * These bits are also used in firmware_has_feature() to validate 137 * the capabilities reported for vector 5 in the device tree so we 138 * encode the vector index in the define and use the OV5_FEAT() 139 * and OV5_INDX() macros to extract the desired information. 140 */ 141 #define OV5_FEAT(x) ((x) & 0xff) 142 #define OV5_INDX(x) ((x) >> 8) 143 #define OV5_LPAR 0x0280 /* logical partitioning supported */ 144 #define OV5_SPLPAR 0x0240 /* shared-processor LPAR supported */ 145 /* ibm,dynamic-reconfiguration-memory property supported */ 146 #define OV5_DRCONF_MEMORY 0x0220 147 #define OV5_LARGE_PAGES 0x0210 /* large pages supported */ 148 #define OV5_DONATE_DEDICATE_CPU 0x0202 /* donate dedicated CPU support */ 149 #define OV5_MSI 0x0201 /* PCIe/MSI support */ 150 #define OV5_CMO 0x0480 /* Cooperative Memory Overcommitment */ 151 #define OV5_XCMO 0x0440 /* Page Coalescing */ 152 #define OV5_TYPE1_AFFINITY 0x0580 /* Type 1 NUMA affinity */ 153 #define OV5_PRRN 0x0540 /* Platform Resource Reassignment */ 154 #define OV5_PFO_HW_RNG 0x0E80 /* PFO Random Number Generator */ 155 #define OV5_PFO_HW_842 0x0E40 /* PFO Compression Accelerator */ 156 #define OV5_PFO_HW_ENCR 0x0E20 /* PFO Encryption Accelerator */ 157 #define OV5_SUB_PROCESSORS 0x0F01 /* 1,2,or 4 Sub-Processors supported */ 158 159 /* Option Vector 6: IBM PAPR hints */ 160 #define OV6_LINUX 0x02 /* Linux is our OS */ 161 162 /* 163 * The architecture vector has an array of PVR mask/value pairs, 164 * followed by # option vectors - 1, followed by the option vectors. 165 */ 166 extern unsigned char ibm_architecture_vec[]; 167 168 #endif /* __KERNEL__ */ 169 #endif /* _POWERPC_PROM_H */ 170