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181 lines
7.1 KiB
181 lines
7.1 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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#ifndef _POWERPC_PROM_H |
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#define _POWERPC_PROM_H |
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#ifdef __KERNEL__ |
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/* |
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* Definitions for talking to the Open Firmware PROM on |
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* Power Macintosh computers. |
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* |
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* Copyright (C) 1996-2005 Paul Mackerras. |
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* |
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* Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp. |
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*/ |
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#include <linux/types.h> |
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#include <asm/irq.h> |
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#include <linux/atomic.h> |
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/* These includes should be removed once implicit includes are cleaned up. */ |
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#include <linux/of.h> |
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#include <linux/of_fdt.h> |
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#include <linux/of_address.h> |
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#include <linux/of_irq.h> |
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#include <linux/platform_device.h> |
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#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */ |
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#define OF_DT_END_NODE 0x2 /* End node */ |
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#define OF_DT_PROP 0x3 /* Property: name off, size, |
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* content */ |
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#define OF_DT_NOP 0x4 /* nop */ |
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#define OF_DT_END 0x9 |
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#define OF_DT_VERSION 0x10 |
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/* |
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* This is what gets passed to the kernel by prom_init or kexec |
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* |
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* The dt struct contains the device tree structure, full pathes and |
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* property contents. The dt strings contain a separate block with just |
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* the strings for the property names, and is fully page aligned and |
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* self contained in a page, so that it can be kept around by the kernel, |
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* each property name appears only once in this page (cheap compression) |
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* |
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* the mem_rsvmap contains a map of reserved ranges of physical memory, |
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* passing it here instead of in the device-tree itself greatly simplifies |
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* the job of everybody. It's just a list of u64 pairs (base/size) that |
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* ends when size is 0 |
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*/ |
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struct boot_param_header { |
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__be32 magic; /* magic word OF_DT_HEADER */ |
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__be32 totalsize; /* total size of DT block */ |
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__be32 off_dt_struct; /* offset to structure */ |
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__be32 off_dt_strings; /* offset to strings */ |
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__be32 off_mem_rsvmap; /* offset to memory reserve map */ |
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__be32 version; /* format version */ |
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__be32 last_comp_version; /* last compatible version */ |
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/* version 2 fields below */ |
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__be32 boot_cpuid_phys; /* Physical CPU id we're booting on */ |
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/* version 3 fields below */ |
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__be32 dt_strings_size; /* size of the DT strings block */ |
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/* version 17 fields below */ |
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__be32 dt_struct_size; /* size of the DT structure block */ |
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}; |
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/* |
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* OF address retreival & translation |
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*/ |
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/* Parse the ibm,dma-window property of an OF node into the busno, phys and |
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* size parameters. |
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*/ |
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void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window, |
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unsigned long *busno, unsigned long *phys, |
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unsigned long *size); |
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extern void of_instantiate_rtc(void); |
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extern int of_get_ibm_chip_id(struct device_node *np); |
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struct of_drc_info { |
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char *drc_type; |
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char *drc_name_prefix; |
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u32 drc_index_start; |
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u32 drc_name_suffix_start; |
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u32 num_sequential_elems; |
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u32 sequential_inc; |
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u32 drc_power_domain; |
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u32 last_drc_index; |
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}; |
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extern int of_read_drc_info_cell(struct property **prop, |
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const __be32 **curval, struct of_drc_info *data); |
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/* |
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* There are two methods for telling firmware what our capabilities are. |
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* Newer machines have an "ibm,client-architecture-support" method on the |
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* root node. For older machines, we have to call the "process-elf-header" |
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* method in the /packages/elf-loader node, passing it a fake 32-bit |
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* ELF header containing a couple of PT_NOTE sections that contain |
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* structures that contain various information. |
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*/ |
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/* New method - extensible architecture description vector. */ |
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/* Option vector bits - generic bits in byte 1 */ |
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#define OV_IGNORE 0x80 /* ignore this vector */ |
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#define OV_CESSATION_POLICY 0x40 /* halt if unsupported option present*/ |
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/* Option vector 1: processor architectures supported */ |
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#define OV1_PPC_2_00 0x80 /* set if we support PowerPC 2.00 */ |
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#define OV1_PPC_2_01 0x40 /* set if we support PowerPC 2.01 */ |
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#define OV1_PPC_2_02 0x20 /* set if we support PowerPC 2.02 */ |
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#define OV1_PPC_2_03 0x10 /* set if we support PowerPC 2.03 */ |
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#define OV1_PPC_2_04 0x08 /* set if we support PowerPC 2.04 */ |
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#define OV1_PPC_2_05 0x04 /* set if we support PowerPC 2.05 */ |
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#define OV1_PPC_2_06 0x02 /* set if we support PowerPC 2.06 */ |
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#define OV1_PPC_2_07 0x01 /* set if we support PowerPC 2.07 */ |
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#define OV1_PPC_3_00 0x80 /* set if we support PowerPC 3.00 */ |
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#define OV1_PPC_3_1 0x40 /* set if we support PowerPC 3.1 */ |
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/* Option vector 2: Open Firmware options supported */ |
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#define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */ |
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/* Option vector 3: processor options supported */ |
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#define OV3_FP 0x80 /* floating point */ |
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#define OV3_VMX 0x40 /* VMX/Altivec */ |
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#define OV3_DFP 0x20 /* decimal FP */ |
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/* Option vector 4: IBM PAPR implementation */ |
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#define OV4_MIN_ENT_CAP 0x01 /* minimum VP entitled capacity */ |
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/* Option vector 5: PAPR/OF options supported |
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* These bits are also used in firmware_has_feature() to validate |
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* the capabilities reported for vector 5 in the device tree so we |
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* encode the vector index in the define and use the OV5_FEAT() |
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* and OV5_INDX() macros to extract the desired information. |
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*/ |
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#define OV5_FEAT(x) ((x) & 0xff) |
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#define OV5_INDX(x) ((x) >> 8) |
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#define OV5_LPAR 0x0280 /* logical partitioning supported */ |
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#define OV5_SPLPAR 0x0240 /* shared-processor LPAR supported */ |
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/* ibm,dynamic-reconfiguration-memory property supported */ |
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#define OV5_DRCONF_MEMORY 0x0220 |
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#define OV5_LARGE_PAGES 0x0210 /* large pages supported */ |
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#define OV5_DONATE_DEDICATE_CPU 0x0202 /* donate dedicated CPU support */ |
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#define OV5_MSI 0x0201 /* PCIe/MSI support */ |
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#define OV5_CMO 0x0480 /* Cooperative Memory Overcommitment */ |
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#define OV5_XCMO 0x0440 /* Page Coalescing */ |
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#define OV5_TYPE1_AFFINITY 0x0580 /* Type 1 NUMA affinity */ |
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#define OV5_PRRN 0x0540 /* Platform Resource Reassignment */ |
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#define OV5_HP_EVT 0x0604 /* Hot Plug Event support */ |
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#define OV5_RESIZE_HPT 0x0601 /* Hash Page Table resizing */ |
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#define OV5_PFO_HW_RNG 0x1180 /* PFO Random Number Generator */ |
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#define OV5_PFO_HW_842 0x1140 /* PFO Compression Accelerator */ |
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#define OV5_PFO_HW_ENCR 0x1120 /* PFO Encryption Accelerator */ |
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#define OV5_SUB_PROCESSORS 0x1501 /* 1,2,or 4 Sub-Processors supported */ |
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#define OV5_DRMEM_V2 0x1680 /* ibm,dynamic-reconfiguration-v2 */ |
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#define OV5_XIVE_SUPPORT 0x17C0 /* XIVE Exploitation Support Mask */ |
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#define OV5_XIVE_LEGACY 0x1700 /* XIVE legacy mode Only */ |
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#define OV5_XIVE_EXPLOIT 0x1740 /* XIVE exploitation mode Only */ |
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#define OV5_XIVE_EITHER 0x1780 /* XIVE legacy or exploitation mode */ |
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/* MMU Base Architecture */ |
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#define OV5_MMU_SUPPORT 0x18C0 /* MMU Mode Support Mask */ |
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#define OV5_MMU_HASH 0x1800 /* Hash MMU Only */ |
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#define OV5_MMU_RADIX 0x1840 /* Radix MMU Only */ |
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#define OV5_MMU_EITHER 0x1880 /* Hash or Radix Supported */ |
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#define OV5_MMU_DYNAMIC 0x18C0 /* Hash or Radix Can Switch Later */ |
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#define OV5_NMMU 0x1820 /* Nest MMU Available */ |
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/* Hash Table Extensions */ |
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#define OV5_HASH_SEG_TBL 0x1980 /* In Memory Segment Tables Available */ |
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#define OV5_HASH_GTSE 0x1940 /* Guest Translation Shoot Down Avail */ |
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/* Radix Table Extensions */ |
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#define OV5_RADIX_GTSE 0x1A40 /* Guest Translation Shoot Down Avail */ |
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#define OV5_DRC_INFO 0x1640 /* Redef Prop Structures: drc-info */ |
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/* Option Vector 6: IBM PAPR hints */ |
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#define OV6_LINUX 0x02 /* Linux is our OS */ |
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#endif /* __KERNEL__ */ |
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#endif /* _POWERPC_PROM_H */
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