arch/powerpc/include/asm/prom.h

   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 /*
  30  * OF address retreival & translation
  31  */
  32
  33 /* Parse the ibm,dma-window property of an OF node into the busno, phys and
  34  * size parameters.
  35  */
  36 void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window,
  37                          unsigned long *busno, unsigned long *phys,
  38                          unsigned long *size);
  39
  40 extern void kdump_move_device_tree(void);
  41
  42 extern void of_instantiate_rtc(void);
  43
  44 extern int of_get_ibm_chip_id(struct device_node *np);
  45
  46 /* The of_drconf_cell struct defines the layout of the LMB array
  47  * specified in the device tree property
  48  * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory
  49  */
  50 struct of_drconf_cell {
  51         u64     base_addr;
  52         u32     drc_index;
  53         u32     reserved;
  54         u32     aa_index;
  55         u32     flags;
  56 };
  57
  58 #define DRCONF_MEM_ASSIGNED     0x00000008
  59 #define DRCONF_MEM_AI_INVALID   0x00000040
  60 #define DRCONF_MEM_RESERVED     0x00000080
  61
  62 /*
  63  * There are two methods for telling firmware what our capabilities are.
  64  * Newer machines have an "ibm,client-architecture-support" method on the
  65  * root node.  For older machines, we have to call the "process-elf-header"
  66  * method in the /packages/elf-loader node, passing it a fake 32-bit
  67  * ELF header containing a couple of PT_NOTE sections that contain
  68  * structures that contain various information.
  69  */
  70
  71 /* New method - extensible architecture description vector. */
  72
  73 /* Option vector bits - generic bits in byte 1 */
  74 #define OV_IGNORE               0x80    /* ignore this vector */
  75 #define OV_CESSATION_POLICY     0x40    /* halt if unsupported option present*/
  76
  77 /* Option vector 1: processor architectures supported */
  78 #define OV1_PPC_2_00            0x80    /* set if we support PowerPC 2.00 */
  79 #define OV1_PPC_2_01            0x40    /* set if we support PowerPC 2.01 */
  80 #define OV1_PPC_2_02            0x20    /* set if we support PowerPC 2.02 */
  81 #define OV1_PPC_2_03            0x10    /* set if we support PowerPC 2.03 */
  82 #define OV1_PPC_2_04            0x08    /* set if we support PowerPC 2.04 */
  83 #define OV1_PPC_2_05            0x04    /* set if we support PowerPC 2.05 */
  84 #define OV1_PPC_2_06            0x02    /* set if we support PowerPC 2.06 */
  85 #define OV1_PPC_2_07            0x01    /* set if we support PowerPC 2.07 */
  86
  87 /* Option vector 2: Open Firmware options supported */
  88 #define OV2_REAL_MODE           0x20    /* set if we want OF in real mode */
  89
  90 /* Option vector 3: processor options supported */
  91 #define OV3_FP                  0x80    /* floating point */
  92 #define OV3_VMX                 0x40    /* VMX/Altivec */
  93 #define OV3_DFP                 0x20    /* decimal FP */
  94
  95 /* Option vector 4: IBM PAPR implementation */
  96 #define OV4_MIN_ENT_CAP         0x01    /* minimum VP entitled capacity */
  97
  98 /* Option vector 5: PAPR/OF options supported
  99  * These bits are also used in firmware_has_feature() to validate
 100  * the capabilities reported for vector 5 in the device tree so we
 101  * encode the vector index in the define and use the OV5_FEAT()
 102  * and OV5_INDX() macros to extract the desired information.
 103  */
 104 #define OV5_FEAT(x)     ((x) & 0xff)
 105 #define OV5_INDX(x)     ((x) >> 8)
 106 #define OV5_LPAR                0x0280  /* logical partitioning supported */
 107 #define OV5_SPLPAR              0x0240  /* shared-processor LPAR supported */
 108 /* ibm,dynamic-reconfiguration-memory property supported */
 109 #define OV5_DRCONF_MEMORY       0x0220
 110 #define OV5_LARGE_PAGES         0x0210  /* large pages supported */
 111 #define OV5_DONATE_DEDICATE_CPU 0x0202  /* donate dedicated CPU support */
 112 #define OV5_MSI                 0x0201  /* PCIe/MSI support */
 113 #define OV5_CMO                 0x0480  /* Cooperative Memory Overcommitment */
 114 #define OV5_XCMO                0x0440  /* Page Coalescing */
 115 #define OV5_TYPE1_AFFINITY      0x0580  /* Type 1 NUMA affinity */
 116 #define OV5_PRRN                0x0540  /* Platform Resource Reassignment */
 117 #define OV5_PFO_HW_RNG          0x0E80  /* PFO Random Number Generator */
 118 #define OV5_PFO_HW_842          0x0E40  /* PFO Compression Accelerator */
 119 #define OV5_PFO_HW_ENCR         0x0E20  /* PFO Encryption Accelerator */
 120 #define OV5_SUB_PROCESSORS      0x0F01  /* 1,2,or 4 Sub-Processors supported */
 121
 122 /* Option Vector 6: IBM PAPR hints */
 123 #define OV6_LINUX               0x02    /* Linux is our OS */
 124
 125 /*
 126  * The architecture vector has an array of PVR mask/value pairs,
 127  * followed by # option vectors - 1, followed by the option vectors.
 128  */
 129 extern unsigned char ibm_architecture_vec[];
 130
 131 #endif /* __KERNEL__ */
 132 #endif /* _POWERPC_PROM_H */