summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/include/asm/prom.h
blob: 35c00d7a0cf81a4773d0fad7dc2747923cd2c643 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
#ifndef _POWERPC_PROM_H
#define _POWERPC_PROM_H
#ifdef __KERNEL__

/*
 * Definitions for talking to the Open Firmware PROM on
 * Power Macintosh computers.
 *
 * Copyright (C) 1996-2005 Paul Mackerras.
 *
 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */
#include <linux/types.h>
#include <asm/irq.h>
#include <linux/atomic.h>

/* These includes should be removed once implicit includes are cleaned up. */
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>

#define OF_DT_BEGIN_NODE	0x1		/* Start of node, full name */
#define OF_DT_END_NODE		0x2		/* End node */
#define OF_DT_PROP		0x3		/* Property: name off, size,
						 * content */
#define OF_DT_NOP		0x4		/* nop */
#define OF_DT_END		0x9

#define OF_DT_VERSION		0x10

/*
 * This is what gets passed to the kernel by prom_init or kexec
 *
 * The dt struct contains the device tree structure, full pathes and
 * property contents. The dt strings contain a separate block with just
 * the strings for the property names, and is fully page aligned and
 * self contained in a page, so that it can be kept around by the kernel,
 * each property name appears only once in this page (cheap compression)
 *
 * the mem_rsvmap contains a map of reserved ranges of physical memory,
 * passing it here instead of in the device-tree itself greatly simplifies
 * the job of everybody. It's just a list of u64 pairs (base/size) that
 * ends when size is 0
 */
struct boot_param_header {
	__be32	magic;			/* magic word OF_DT_HEADER */
	__be32	totalsize;		/* total size of DT block */
	__be32	off_dt_struct;		/* offset to structure */
	__be32	off_dt_strings;		/* offset to strings */
	__be32	off_mem_rsvmap;		/* offset to memory reserve map */
	__be32	version;		/* format version */
	__be32	last_comp_version;	/* last compatible version */
	/* version 2 fields below */
	__be32	boot_cpuid_phys;	/* Physical CPU id we're booting on */
	/* version 3 fields below */
	__be32	dt_strings_size;	/* size of the DT strings block */
	/* version 17 fields below */
	__be32	dt_struct_size;		/* size of the DT structure block */
};

/*
 * OF address retreival & translation
 */

/* Parse the ibm,dma-window property of an OF node into the busno, phys and
 * size parameters.
 */
void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window,
			 unsigned long *busno, unsigned long *phys,
			 unsigned long *size);

extern void of_instantiate_rtc(void);

extern int of_get_ibm_chip_id(struct device_node *np);

/* The of_drconf_cell struct defines the layout of the LMB array
 * specified in the device tree property
 * ibm,dynamic-reconfiguration-memory/ibm,dynamic-memory
 */
struct of_drconf_cell {
	u64	base_addr;
	u32	drc_index;
	u32	reserved;
	u32	aa_index;
	u32	flags;
};

#define DRCONF_MEM_ASSIGNED	0x00000008
#define DRCONF_MEM_AI_INVALID	0x00000040
#define DRCONF_MEM_RESERVED	0x00000080

/*
 * There are two methods for telling firmware what our capabilities are.
 * Newer machines have an "ibm,client-architecture-support" method on the
 * root node.  For older machines, we have to call the "process-elf-header"
 * method in the /packages/elf-loader node, passing it a fake 32-bit
 * ELF header containing a couple of PT_NOTE sections that contain
 * structures that contain various information.
 */

/* New method - extensible architecture description vector. */

/* Option vector bits - generic bits in byte 1 */
#define OV_IGNORE		0x80	/* ignore this vector */
#define OV_CESSATION_POLICY	0x40	/* halt if unsupported option present*/

/* Option vector 1: processor architectures supported */
#define OV1_PPC_2_00		0x80	/* set if we support PowerPC 2.00 */
#define OV1_PPC_2_01		0x40	/* set if we support PowerPC 2.01 */
#define OV1_PPC_2_02		0x20	/* set if we support PowerPC 2.02 */
#define OV1_PPC_2_03		0x10	/* set if we support PowerPC 2.03 */
#define OV1_PPC_2_04		0x08	/* set if we support PowerPC 2.04 */
#define OV1_PPC_2_05		0x04	/* set if we support PowerPC 2.05 */
#define OV1_PPC_2_06		0x02	/* set if we support PowerPC 2.06 */
#define OV1_PPC_2_07		0x01	/* set if we support PowerPC 2.07 */

#define OV1_PPC_3_00		0x80	/* set if we support PowerPC 3.00 */

/* Option vector 2: Open Firmware options supported */
#define OV2_REAL_MODE		0x20	/* set if we want OF in real mode */

/* Option vector 3: processor options supported */
#define OV3_FP			0x80	/* floating point */
#define OV3_VMX			0x40	/* VMX/Altivec */
#define OV3_DFP			0x20	/* decimal FP */

/* Option vector 4: IBM PAPR implementation */
#define OV4_MIN_ENT_CAP		0x01	/* minimum VP entitled capacity */

/* Option vector 5: PAPR/OF options supported
 * These bits are also used in firmware_has_feature() to validate
 * the capabilities reported for vector 5 in the device tree so we
 * encode the vector index in the define and use the OV5_FEAT()
 * and OV5_INDX() macros to extract the desired information.
 */
#define OV5_FEAT(x)	((x) & 0xff)
#define OV5_INDX(x)	((x) >> 8)
#define OV5_LPAR		0x0280	/* logical partitioning supported */
#define OV5_SPLPAR		0x0240	/* shared-processor LPAR supported */
/* ibm,dynamic-reconfiguration-memory property supported */
#define OV5_DRCONF_MEMORY	0x0220
#define OV5_LARGE_PAGES		0x0210	/* large pages supported */
#define OV5_DONATE_DEDICATE_CPU	0x0202	/* donate dedicated CPU support */
#define OV5_MSI			0x0201	/* PCIe/MSI support */
#define OV5_CMO			0x0480	/* Cooperative Memory Overcommitment */
#define OV5_XCMO		0x0440	/* Page Coalescing */
#define OV5_TYPE1_AFFINITY	0x0580	/* Type 1 NUMA affinity */
#define OV5_PRRN		0x0540	/* Platform Resource Reassignment */
#define OV5_HP_EVT		0x0604	/* Hot Plug Event support */
#define OV5_RESIZE_HPT		0x0601	/* Hash Page Table resizing */
#define OV5_PFO_HW_RNG		0x1180	/* PFO Random Number Generator */
#define OV5_PFO_HW_842		0x1140	/* PFO Compression Accelerator */
#define OV5_PFO_HW_ENCR		0x1120	/* PFO Encryption Accelerator */
#define OV5_SUB_PROCESSORS	0x1501	/* 1,2,or 4 Sub-Processors supported */
#define OV5_XIVE_EXPLOIT	0x1701	/* XIVE exploitation supported */
/* MMU Base Architecture */
#define OV5_MMU_SUPPORT		0x18C0	/* MMU Mode Support Mask */
#define OV5_MMU_HASH		0x1800	/* Hash MMU Only */
#define OV5_MMU_RADIX		0x1840	/* Radix MMU Only */
#define OV5_MMU_EITHER		0x1880	/* Hash or Radix Supported */
#define OV5_MMU_DYNAMIC		0x18C0	/* Hash or Radix Can Switch Later */
#define OV5_NMMU		0x1820	/* Nest MMU Available */
/* Hash Table Extensions */
#define OV5_HASH_SEG_TBL	0x1980	/* In Memory Segment Tables Available */
#define OV5_HASH_GTSE		0x1940	/* Guest Translation Shoot Down Avail */
/* Radix Table Extensions */
#define OV5_RADIX_GTSE		0x1A40	/* Guest Translation Shoot Down Avail */

/* Option Vector 6: IBM PAPR hints */
#define OV6_LINUX		0x02	/* Linux is our OS */

#endif /* __KERNEL__ */
#endif /* _POWERPC_PROM_H */