1 #ifndef _POWERPC_PROM_H
2 #define _POWERPC_PROM_H
6 * Definitions for talking to the Open Firmware PROM on
7 * Power Macintosh computers.
9 * Copyright (C) 1996-2005 Paul Mackerras.
11 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
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.
18 #include <linux/types.h>
20 #include <linux/atomic.h>
22 /* These includes should be removed once implicit includes are cleaned up. */
24 #include <linux/of_fdt.h>
25 #include <linux/of_address.h>
26 #include <linux/of_irq.h>
27 #include <linux/platform_device.h>
30 * OF address retreival & translation
33 /* Parse the ibm,dma-window property of an OF node into the busno, phys and
36 void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window,
37 unsigned long *busno, unsigned long *phys,
40 extern void kdump_move_device_tree(void);
43 struct device_node *of_find_next_cache_node(struct device_node *np);
45 extern void of_instantiate_rtc(void);
47 extern int of_get_ibm_chip_id(struct device_node *np);
49 /* The of_drconf_cell struct defines the layout of the LMB array
50 * specified in the device tree property
51 * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory
53 struct of_drconf_cell {
61 #define DRCONF_MEM_ASSIGNED 0x00000008
62 #define DRCONF_MEM_AI_INVALID 0x00000040
63 #define DRCONF_MEM_RESERVED 0x00000080
66 * There are two methods for telling firmware what our capabilities are.
67 * Newer machines have an "ibm,client-architecture-support" method on the
68 * root node. For older machines, we have to call the "process-elf-header"
69 * method in the /packages/elf-loader node, passing it a fake 32-bit
70 * ELF header containing a couple of PT_NOTE sections that contain
71 * structures that contain various information.
74 /* New method - extensible architecture description vector. */
76 /* Option vector bits - generic bits in byte 1 */
77 #define OV_IGNORE 0x80 /* ignore this vector */
78 #define OV_CESSATION_POLICY 0x40 /* halt if unsupported option present*/
80 /* Option vector 1: processor architectures supported */
81 #define OV1_PPC_2_00 0x80 /* set if we support PowerPC 2.00 */
82 #define OV1_PPC_2_01 0x40 /* set if we support PowerPC 2.01 */
83 #define OV1_PPC_2_02 0x20 /* set if we support PowerPC 2.02 */
84 #define OV1_PPC_2_03 0x10 /* set if we support PowerPC 2.03 */
85 #define OV1_PPC_2_04 0x08 /* set if we support PowerPC 2.04 */
86 #define OV1_PPC_2_05 0x04 /* set if we support PowerPC 2.05 */
87 #define OV1_PPC_2_06 0x02 /* set if we support PowerPC 2.06 */
88 #define OV1_PPC_2_07 0x01 /* set if we support PowerPC 2.07 */
90 /* Option vector 2: Open Firmware options supported */
91 #define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */
93 /* Option vector 3: processor options supported */
94 #define OV3_FP 0x80 /* floating point */
95 #define OV3_VMX 0x40 /* VMX/Altivec */
96 #define OV3_DFP 0x20 /* decimal FP */
98 /* Option vector 4: IBM PAPR implementation */
99 #define OV4_MIN_ENT_CAP 0x01 /* minimum VP entitled capacity */
101 /* Option vector 5: PAPR/OF options supported
102 * These bits are also used in firmware_has_feature() to validate
103 * the capabilities reported for vector 5 in the device tree so we
104 * encode the vector index in the define and use the OV5_FEAT()
105 * and OV5_INDX() macros to extract the desired information.
107 #define OV5_FEAT(x) ((x) & 0xff)
108 #define OV5_INDX(x) ((x) >> 8)
109 #define OV5_LPAR 0x0280 /* logical partitioning supported */
110 #define OV5_SPLPAR 0x0240 /* shared-processor LPAR supported */
111 /* ibm,dynamic-reconfiguration-memory property supported */
112 #define OV5_DRCONF_MEMORY 0x0220
113 #define OV5_LARGE_PAGES 0x0210 /* large pages supported */
114 #define OV5_DONATE_DEDICATE_CPU 0x0202 /* donate dedicated CPU support */
115 #define OV5_MSI 0x0201 /* PCIe/MSI support */
116 #define OV5_CMO 0x0480 /* Cooperative Memory Overcommitment */
117 #define OV5_XCMO 0x0440 /* Page Coalescing */
118 #define OV5_TYPE1_AFFINITY 0x0580 /* Type 1 NUMA affinity */
119 #define OV5_PRRN 0x0540 /* Platform Resource Reassignment */
120 #define OV5_PFO_HW_RNG 0x0E80 /* PFO Random Number Generator */
121 #define OV5_PFO_HW_842 0x0E40 /* PFO Compression Accelerator */
122 #define OV5_PFO_HW_ENCR 0x0E20 /* PFO Encryption Accelerator */
123 #define OV5_SUB_PROCESSORS 0x0F01 /* 1,2,or 4 Sub-Processors supported */
125 /* Option Vector 6: IBM PAPR hints */
126 #define OV6_LINUX 0x02 /* Linux is our OS */
129 * The architecture vector has an array of PVR mask/value pairs,
130 * followed by # option vectors - 1, followed by the option vectors.
132 extern unsigned char ibm_architecture_vec[];
134 #endif /* __KERNEL__ */
135 #endif /* _POWERPC_PROM_H */