179 lines
7.0 KiB
C
179 lines
7.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
#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.
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <asm/firmware.h>
|
|
|
|
struct device_node;
|
|
struct property;
|
|
|
|
#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);
|
|
|
|
struct of_drc_info {
|
|
char *drc_type;
|
|
char *drc_name_prefix;
|
|
u32 drc_index_start;
|
|
u32 drc_name_suffix_start;
|
|
u32 num_sequential_elems;
|
|
u32 sequential_inc;
|
|
u32 drc_power_domain;
|
|
u32 last_drc_index;
|
|
};
|
|
|
|
extern int of_read_drc_info_cell(struct property **prop,
|
|
const __be32 **curval, struct of_drc_info *data);
|
|
|
|
extern unsigned int boot_cpu_node_count;
|
|
|
|
/*
|
|
* 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 */
|
|
#define OV1_PPC_3_1 0x40 /* set if we support PowerPC 3.1 */
|
|
|
|
/* 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_FORM1_AFFINITY 0x0580 /* FORM1 NUMA affinity */
|
|
#define OV5_PRRN 0x0540 /* Platform Resource Reassignment */
|
|
#define OV5_FORM2_AFFINITY 0x0520 /* Form2 NUMA affinity */
|
|
#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_DRMEM_V2 0x1680 /* ibm,dynamic-reconfiguration-v2 */
|
|
#define OV5_XIVE_SUPPORT 0x17C0 /* XIVE Exploitation Support Mask */
|
|
#define OV5_XIVE_LEGACY 0x1700 /* XIVE legacy mode Only */
|
|
#define OV5_XIVE_EXPLOIT 0x1740 /* XIVE exploitation mode Only */
|
|
#define OV5_XIVE_EITHER 0x1780 /* XIVE legacy or exploitation mode */
|
|
/* 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 */
|
|
#define OV5_DRC_INFO 0x1640 /* Redef Prop Structures: drc-info */
|
|
|
|
/* Option Vector 6: IBM PAPR hints */
|
|
#define OV6_LINUX 0x02 /* Linux is our OS */
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _POWERPC_PROM_H */
|