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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b24413180f
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
967 lines
23 KiB
ArmAsm
967 lines
23 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/* head.S: Initial boot code for the Sparc64 port of Linux.
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*
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* Copyright (C) 1996, 1997, 2007 David S. Miller (davem@davemloft.net)
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* Copyright (C) 1996 David Sitsky (David.Sitsky@anu.edu.au)
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* Copyright (C) 1997, 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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* Copyright (C) 1997 Miguel de Icaza (miguel@nuclecu.unam.mx)
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*/
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#include <linux/version.h>
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#include <linux/errno.h>
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#include <linux/threads.h>
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#include <linux/init.h>
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#include <linux/linkage.h>
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#include <asm/thread_info.h>
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#include <asm/asi.h>
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#include <asm/pstate.h>
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#include <asm/ptrace.h>
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#include <asm/spitfire.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/errno.h>
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#include <asm/signal.h>
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#include <asm/processor.h>
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#include <asm/lsu.h>
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#include <asm/dcr.h>
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#include <asm/dcu.h>
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#include <asm/head.h>
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#include <asm/ttable.h>
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#include <asm/mmu.h>
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#include <asm/cpudata.h>
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#include <asm/pil.h>
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#include <asm/estate.h>
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#include <asm/sfafsr.h>
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#include <asm/unistd.h>
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#include <asm/export.h>
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/* This section from from _start to sparc64_boot_end should fit into
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* 0x0000000000404000 to 0x0000000000408000.
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*/
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.text
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.globl start, _start, stext, _stext
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_start:
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start:
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_stext:
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stext:
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! 0x0000000000404000
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b sparc64_boot
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flushw /* Flush register file. */
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/* This stuff has to be in sync with SILO and other potential boot loaders
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* Fields should be kept upward compatible and whenever any change is made,
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* HdrS version should be incremented.
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*/
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.global root_flags, ram_flags, root_dev
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.global sparc_ramdisk_image, sparc_ramdisk_size
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.global sparc_ramdisk_image64
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.ascii "HdrS"
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.word LINUX_VERSION_CODE
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/* History:
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*
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* 0x0300 : Supports being located at other than 0x4000
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* 0x0202 : Supports kernel params string
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* 0x0201 : Supports reboot_command
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*/
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.half 0x0301 /* HdrS version */
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root_flags:
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.half 1
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root_dev:
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.half 0
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ram_flags:
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.half 0
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sparc_ramdisk_image:
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.word 0
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sparc_ramdisk_size:
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.word 0
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.xword reboot_command
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.xword bootstr_info
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sparc_ramdisk_image64:
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.xword 0
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.word _end
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/* PROM cif handler code address is in %o4. */
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sparc64_boot:
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mov %o4, %l7
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/* We need to remap the kernel. Use position independent
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* code to remap us to KERNBASE.
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*
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* SILO can invoke us with 32-bit address masking enabled,
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* so make sure that's clear.
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*/
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rdpr %pstate, %g1
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andn %g1, PSTATE_AM, %g1
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wrpr %g1, 0x0, %pstate
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ba,a,pt %xcc, 1f
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nop
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.globl prom_finddev_name, prom_chosen_path, prom_root_node
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.globl prom_getprop_name, prom_mmu_name, prom_peer_name
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.globl prom_callmethod_name, prom_translate_name, prom_root_compatible
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.globl prom_map_name, prom_unmap_name, prom_mmu_ihandle_cache
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.globl prom_boot_mapped_pc, prom_boot_mapping_mode
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.globl prom_boot_mapping_phys_high, prom_boot_mapping_phys_low
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.globl prom_compatible_name, prom_cpu_path, prom_cpu_compatible
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.globl is_sun4v, sun4v_chip_type, prom_set_trap_table_name
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prom_peer_name:
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.asciz "peer"
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prom_compatible_name:
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.asciz "compatible"
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prom_finddev_name:
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.asciz "finddevice"
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prom_chosen_path:
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.asciz "/chosen"
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prom_cpu_path:
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.asciz "/cpu"
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prom_getprop_name:
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.asciz "getprop"
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prom_mmu_name:
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.asciz "mmu"
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prom_callmethod_name:
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.asciz "call-method"
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prom_translate_name:
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.asciz "translate"
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prom_map_name:
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.asciz "map"
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prom_unmap_name:
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.asciz "unmap"
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prom_set_trap_table_name:
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.asciz "SUNW,set-trap-table"
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prom_sun4v_name:
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.asciz "sun4v"
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prom_niagara_prefix:
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.asciz "SUNW,UltraSPARC-T"
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prom_sparc_prefix:
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.asciz "SPARC-"
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prom_sparc64x_prefix:
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.asciz "SPARC64-X"
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.align 4
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prom_root_compatible:
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.skip 64
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prom_cpu_compatible:
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.skip 64
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prom_root_node:
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.word 0
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EXPORT_SYMBOL(prom_root_node)
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prom_mmu_ihandle_cache:
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.word 0
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prom_boot_mapped_pc:
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.word 0
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prom_boot_mapping_mode:
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.word 0
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.align 8
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prom_boot_mapping_phys_high:
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.xword 0
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prom_boot_mapping_phys_low:
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.xword 0
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is_sun4v:
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.word 0
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sun4v_chip_type:
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.word SUN4V_CHIP_INVALID
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EXPORT_SYMBOL(sun4v_chip_type)
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1:
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rd %pc, %l0
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mov (1b - prom_peer_name), %l1
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sub %l0, %l1, %l1
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mov 0, %l2
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/* prom_root_node = prom_peer(0) */
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stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "peer"
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mov 1, %l3
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stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 1
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stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
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stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1, 0
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stx %g0, [%sp + 2047 + 128 + 0x20] ! ret1
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call %l7
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add %sp, (2047 + 128), %o0 ! argument array
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ldx [%sp + 2047 + 128 + 0x20], %l4 ! prom root node
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mov (1b - prom_root_node), %l1
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sub %l0, %l1, %l1
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stw %l4, [%l1]
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mov (1b - prom_getprop_name), %l1
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mov (1b - prom_compatible_name), %l2
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mov (1b - prom_root_compatible), %l5
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sub %l0, %l1, %l1
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sub %l0, %l2, %l2
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sub %l0, %l5, %l5
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/* prom_getproperty(prom_root_node, "compatible",
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* &prom_root_compatible, 64)
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*/
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stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "getprop"
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mov 4, %l3
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stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 4
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mov 1, %l3
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stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
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stx %l4, [%sp + 2047 + 128 + 0x18] ! arg1, prom_root_node
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stx %l2, [%sp + 2047 + 128 + 0x20] ! arg2, "compatible"
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stx %l5, [%sp + 2047 + 128 + 0x28] ! arg3, &prom_root_compatible
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mov 64, %l3
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stx %l3, [%sp + 2047 + 128 + 0x30] ! arg4, size
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stx %g0, [%sp + 2047 + 128 + 0x38] ! ret1
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call %l7
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add %sp, (2047 + 128), %o0 ! argument array
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mov (1b - prom_finddev_name), %l1
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mov (1b - prom_chosen_path), %l2
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mov (1b - prom_boot_mapped_pc), %l3
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sub %l0, %l1, %l1
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sub %l0, %l2, %l2
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sub %l0, %l3, %l3
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stw %l0, [%l3]
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sub %sp, (192 + 128), %sp
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/* chosen_node = prom_finddevice("/chosen") */
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stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "finddevice"
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mov 1, %l3
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stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 1
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stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
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stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1, "/chosen"
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stx %g0, [%sp + 2047 + 128 + 0x20] ! ret1
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call %l7
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add %sp, (2047 + 128), %o0 ! argument array
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ldx [%sp + 2047 + 128 + 0x20], %l4 ! chosen device node
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mov (1b - prom_getprop_name), %l1
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mov (1b - prom_mmu_name), %l2
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mov (1b - prom_mmu_ihandle_cache), %l5
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sub %l0, %l1, %l1
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sub %l0, %l2, %l2
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sub %l0, %l5, %l5
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/* prom_mmu_ihandle_cache = prom_getint(chosen_node, "mmu") */
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stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "getprop"
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mov 4, %l3
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stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 4
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mov 1, %l3
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stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
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stx %l4, [%sp + 2047 + 128 + 0x18] ! arg1, chosen_node
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stx %l2, [%sp + 2047 + 128 + 0x20] ! arg2, "mmu"
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stx %l5, [%sp + 2047 + 128 + 0x28] ! arg3, &prom_mmu_ihandle_cache
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mov 4, %l3
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stx %l3, [%sp + 2047 + 128 + 0x30] ! arg4, sizeof(arg3)
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stx %g0, [%sp + 2047 + 128 + 0x38] ! ret1
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call %l7
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add %sp, (2047 + 128), %o0 ! argument array
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mov (1b - prom_callmethod_name), %l1
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mov (1b - prom_translate_name), %l2
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sub %l0, %l1, %l1
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sub %l0, %l2, %l2
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lduw [%l5], %l5 ! prom_mmu_ihandle_cache
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stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "call-method"
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mov 3, %l3
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stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 3
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mov 5, %l3
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stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 5
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stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1: "translate"
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stx %l5, [%sp + 2047 + 128 + 0x20] ! arg2: prom_mmu_ihandle_cache
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/* PAGE align */
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srlx %l0, 13, %l3
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sllx %l3, 13, %l3
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stx %l3, [%sp + 2047 + 128 + 0x28] ! arg3: vaddr, our PC
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stx %g0, [%sp + 2047 + 128 + 0x30] ! res1
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stx %g0, [%sp + 2047 + 128 + 0x38] ! res2
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stx %g0, [%sp + 2047 + 128 + 0x40] ! res3
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stx %g0, [%sp + 2047 + 128 + 0x48] ! res4
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stx %g0, [%sp + 2047 + 128 + 0x50] ! res5
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call %l7
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add %sp, (2047 + 128), %o0 ! argument array
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ldx [%sp + 2047 + 128 + 0x40], %l1 ! translation mode
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mov (1b - prom_boot_mapping_mode), %l4
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sub %l0, %l4, %l4
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stw %l1, [%l4]
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mov (1b - prom_boot_mapping_phys_high), %l4
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sub %l0, %l4, %l4
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ldx [%sp + 2047 + 128 + 0x48], %l2 ! physaddr high
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stx %l2, [%l4 + 0x0]
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ldx [%sp + 2047 + 128 + 0x50], %l3 ! physaddr low
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/* 4MB align */
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srlx %l3, ILOG2_4MB, %l3
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sllx %l3, ILOG2_4MB, %l3
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stx %l3, [%l4 + 0x8]
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/* Leave service as-is, "call-method" */
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mov 7, %l3
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stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 7
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mov 1, %l3
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stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
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mov (1b - prom_map_name), %l3
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sub %l0, %l3, %l3
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stx %l3, [%sp + 2047 + 128 + 0x18] ! arg1: "map"
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/* Leave arg2 as-is, prom_mmu_ihandle_cache */
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mov -1, %l3
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stx %l3, [%sp + 2047 + 128 + 0x28] ! arg3: mode (-1 default)
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/* 4MB align the kernel image size. */
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set (_end - KERNBASE), %l3
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set ((4 * 1024 * 1024) - 1), %l4
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add %l3, %l4, %l3
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andn %l3, %l4, %l3
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stx %l3, [%sp + 2047 + 128 + 0x30] ! arg4: roundup(ksize, 4MB)
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sethi %hi(KERNBASE), %l3
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stx %l3, [%sp + 2047 + 128 + 0x38] ! arg5: vaddr (KERNBASE)
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stx %g0, [%sp + 2047 + 128 + 0x40] ! arg6: empty
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mov (1b - prom_boot_mapping_phys_low), %l3
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sub %l0, %l3, %l3
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ldx [%l3], %l3
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stx %l3, [%sp + 2047 + 128 + 0x48] ! arg7: phys addr
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call %l7
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add %sp, (2047 + 128), %o0 ! argument array
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add %sp, (192 + 128), %sp
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sethi %hi(prom_root_compatible), %g1
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or %g1, %lo(prom_root_compatible), %g1
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sethi %hi(prom_sun4v_name), %g7
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or %g7, %lo(prom_sun4v_name), %g7
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mov 5, %g3
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90: ldub [%g7], %g2
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ldub [%g1], %g4
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cmp %g2, %g4
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bne,pn %icc, 80f
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add %g7, 1, %g7
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subcc %g3, 1, %g3
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bne,pt %xcc, 90b
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add %g1, 1, %g1
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sethi %hi(is_sun4v), %g1
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or %g1, %lo(is_sun4v), %g1
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mov 1, %g7
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stw %g7, [%g1]
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|
/* cpu_node = prom_finddevice("/cpu") */
|
|
mov (1b - prom_finddev_name), %l1
|
|
mov (1b - prom_cpu_path), %l2
|
|
sub %l0, %l1, %l1
|
|
sub %l0, %l2, %l2
|
|
sub %sp, (192 + 128), %sp
|
|
|
|
stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "finddevice"
|
|
mov 1, %l3
|
|
stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 1
|
|
stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
|
|
stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1, "/cpu"
|
|
stx %g0, [%sp + 2047 + 128 + 0x20] ! ret1
|
|
call %l7
|
|
add %sp, (2047 + 128), %o0 ! argument array
|
|
|
|
ldx [%sp + 2047 + 128 + 0x20], %l4 ! cpu device node
|
|
|
|
mov (1b - prom_getprop_name), %l1
|
|
mov (1b - prom_compatible_name), %l2
|
|
mov (1b - prom_cpu_compatible), %l5
|
|
sub %l0, %l1, %l1
|
|
sub %l0, %l2, %l2
|
|
sub %l0, %l5, %l5
|
|
|
|
/* prom_getproperty(cpu_node, "compatible",
|
|
* &prom_cpu_compatible, 64)
|
|
*/
|
|
stx %l1, [%sp + 2047 + 128 + 0x00] ! service, "getprop"
|
|
mov 4, %l3
|
|
stx %l3, [%sp + 2047 + 128 + 0x08] ! num_args, 4
|
|
mov 1, %l3
|
|
stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 1
|
|
stx %l4, [%sp + 2047 + 128 + 0x18] ! arg1, cpu_node
|
|
stx %l2, [%sp + 2047 + 128 + 0x20] ! arg2, "compatible"
|
|
stx %l5, [%sp + 2047 + 128 + 0x28] ! arg3, &prom_cpu_compatible
|
|
mov 64, %l3
|
|
stx %l3, [%sp + 2047 + 128 + 0x30] ! arg4, size
|
|
stx %g0, [%sp + 2047 + 128 + 0x38] ! ret1
|
|
call %l7
|
|
add %sp, (2047 + 128), %o0 ! argument array
|
|
|
|
add %sp, (192 + 128), %sp
|
|
|
|
sethi %hi(prom_cpu_compatible), %g1
|
|
or %g1, %lo(prom_cpu_compatible), %g1
|
|
sethi %hi(prom_niagara_prefix), %g7
|
|
or %g7, %lo(prom_niagara_prefix), %g7
|
|
mov 17, %g3
|
|
90: ldub [%g7], %g2
|
|
ldub [%g1], %g4
|
|
cmp %g2, %g4
|
|
bne,pn %icc, 89f
|
|
add %g7, 1, %g7
|
|
subcc %g3, 1, %g3
|
|
bne,pt %xcc, 90b
|
|
add %g1, 1, %g1
|
|
ba,pt %xcc, 91f
|
|
nop
|
|
|
|
89: sethi %hi(prom_cpu_compatible), %g1
|
|
or %g1, %lo(prom_cpu_compatible), %g1
|
|
sethi %hi(prom_sparc_prefix), %g7
|
|
or %g7, %lo(prom_sparc_prefix), %g7
|
|
mov 6, %g3
|
|
90: ldub [%g7], %g2
|
|
ldub [%g1], %g4
|
|
cmp %g2, %g4
|
|
bne,pn %icc, 4f
|
|
add %g7, 1, %g7
|
|
subcc %g3, 1, %g3
|
|
bne,pt %xcc, 90b
|
|
add %g1, 1, %g1
|
|
|
|
sethi %hi(prom_cpu_compatible), %g1
|
|
or %g1, %lo(prom_cpu_compatible), %g1
|
|
ldub [%g1 + 6], %g2
|
|
cmp %g2, 'T'
|
|
be,pt %xcc, 70f
|
|
cmp %g2, 'M'
|
|
be,pt %xcc, 70f
|
|
cmp %g2, 'S'
|
|
bne,pn %xcc, 49f
|
|
nop
|
|
|
|
70: ldub [%g1 + 7], %g2
|
|
cmp %g2, CPU_ID_NIAGARA3
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_NIAGARA3, %g4
|
|
cmp %g2, CPU_ID_NIAGARA4
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_NIAGARA4, %g4
|
|
cmp %g2, CPU_ID_NIAGARA5
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_NIAGARA5, %g4
|
|
cmp %g2, CPU_ID_M6
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_SPARC_M6, %g4
|
|
cmp %g2, CPU_ID_M7
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_SPARC_M7, %g4
|
|
cmp %g2, CPU_ID_M8
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_SPARC_M8, %g4
|
|
cmp %g2, CPU_ID_SONOMA1
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_SPARC_SN, %g4
|
|
ba,pt %xcc, 49f
|
|
nop
|
|
|
|
91: sethi %hi(prom_cpu_compatible), %g1
|
|
or %g1, %lo(prom_cpu_compatible), %g1
|
|
ldub [%g1 + 17], %g2
|
|
cmp %g2, CPU_ID_NIAGARA1
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_NIAGARA1, %g4
|
|
cmp %g2, CPU_ID_NIAGARA2
|
|
be,pt %xcc, 5f
|
|
mov SUN4V_CHIP_NIAGARA2, %g4
|
|
|
|
4:
|
|
/* Athena */
|
|
sethi %hi(prom_cpu_compatible), %g1
|
|
or %g1, %lo(prom_cpu_compatible), %g1
|
|
sethi %hi(prom_sparc64x_prefix), %g7
|
|
or %g7, %lo(prom_sparc64x_prefix), %g7
|
|
mov 9, %g3
|
|
41: ldub [%g7], %g2
|
|
ldub [%g1], %g4
|
|
cmp %g2, %g4
|
|
bne,pn %icc, 49f
|
|
add %g7, 1, %g7
|
|
subcc %g3, 1, %g3
|
|
bne,pt %xcc, 41b
|
|
add %g1, 1, %g1
|
|
ba,pt %xcc, 5f
|
|
mov SUN4V_CHIP_SPARC64X, %g4
|
|
|
|
49:
|
|
mov SUN4V_CHIP_UNKNOWN, %g4
|
|
5: sethi %hi(sun4v_chip_type), %g2
|
|
or %g2, %lo(sun4v_chip_type), %g2
|
|
stw %g4, [%g2]
|
|
|
|
80:
|
|
BRANCH_IF_SUN4V(g1, jump_to_sun4u_init)
|
|
BRANCH_IF_CHEETAH_BASE(g1,g7,cheetah_boot)
|
|
BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,cheetah_plus_boot)
|
|
ba,pt %xcc, spitfire_boot
|
|
nop
|
|
|
|
cheetah_plus_boot:
|
|
/* Preserve OBP chosen DCU and DCR register settings. */
|
|
ba,pt %xcc, cheetah_generic_boot
|
|
nop
|
|
|
|
cheetah_boot:
|
|
mov DCR_BPE | DCR_RPE | DCR_SI | DCR_IFPOE | DCR_MS, %g1
|
|
wr %g1, %asr18
|
|
|
|
sethi %uhi(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g7
|
|
or %g7, %ulo(DCU_ME|DCU_RE|DCU_HPE|DCU_SPE|DCU_SL|DCU_WE), %g7
|
|
sllx %g7, 32, %g7
|
|
or %g7, DCU_DM | DCU_IM | DCU_DC | DCU_IC, %g7
|
|
stxa %g7, [%g0] ASI_DCU_CONTROL_REG
|
|
membar #Sync
|
|
|
|
cheetah_generic_boot:
|
|
mov TSB_EXTENSION_P, %g3
|
|
stxa %g0, [%g3] ASI_DMMU
|
|
stxa %g0, [%g3] ASI_IMMU
|
|
membar #Sync
|
|
|
|
mov TSB_EXTENSION_S, %g3
|
|
stxa %g0, [%g3] ASI_DMMU
|
|
membar #Sync
|
|
|
|
mov TSB_EXTENSION_N, %g3
|
|
stxa %g0, [%g3] ASI_DMMU
|
|
stxa %g0, [%g3] ASI_IMMU
|
|
membar #Sync
|
|
|
|
ba,a,pt %xcc, jump_to_sun4u_init
|
|
|
|
spitfire_boot:
|
|
/* Typically PROM has already enabled both MMU's and both on-chip
|
|
* caches, but we do it here anyway just to be paranoid.
|
|
*/
|
|
mov (LSU_CONTROL_IC|LSU_CONTROL_DC|LSU_CONTROL_IM|LSU_CONTROL_DM), %g1
|
|
stxa %g1, [%g0] ASI_LSU_CONTROL
|
|
membar #Sync
|
|
|
|
jump_to_sun4u_init:
|
|
/*
|
|
* Make sure we are in privileged mode, have address masking,
|
|
* using the ordinary globals and have enabled floating
|
|
* point.
|
|
*
|
|
* Again, typically PROM has left %pil at 13 or similar, and
|
|
* (PSTATE_PRIV | PSTATE_PEF | PSTATE_IE) in %pstate.
|
|
*/
|
|
wrpr %g0, (PSTATE_PRIV|PSTATE_PEF|PSTATE_IE), %pstate
|
|
wr %g0, 0, %fprs
|
|
|
|
set sun4u_init, %g2
|
|
jmpl %g2 + %g0, %g0
|
|
nop
|
|
|
|
__REF
|
|
sun4u_init:
|
|
BRANCH_IF_SUN4V(g1, sun4v_init)
|
|
|
|
/* Set ctx 0 */
|
|
mov PRIMARY_CONTEXT, %g7
|
|
stxa %g0, [%g7] ASI_DMMU
|
|
membar #Sync
|
|
|
|
mov SECONDARY_CONTEXT, %g7
|
|
stxa %g0, [%g7] ASI_DMMU
|
|
membar #Sync
|
|
|
|
ba,a,pt %xcc, sun4u_continue
|
|
|
|
sun4v_init:
|
|
/* Set ctx 0 */
|
|
mov PRIMARY_CONTEXT, %g7
|
|
stxa %g0, [%g7] ASI_MMU
|
|
membar #Sync
|
|
|
|
mov SECONDARY_CONTEXT, %g7
|
|
stxa %g0, [%g7] ASI_MMU
|
|
membar #Sync
|
|
ba,a,pt %xcc, niagara_tlb_fixup
|
|
|
|
sun4u_continue:
|
|
BRANCH_IF_ANY_CHEETAH(g1, g7, cheetah_tlb_fixup)
|
|
|
|
ba,a,pt %xcc, spitfire_tlb_fixup
|
|
|
|
niagara_tlb_fixup:
|
|
mov 3, %g2 /* Set TLB type to hypervisor. */
|
|
sethi %hi(tlb_type), %g1
|
|
stw %g2, [%g1 + %lo(tlb_type)]
|
|
|
|
/* Patch copy/clear ops. */
|
|
sethi %hi(sun4v_chip_type), %g1
|
|
lduw [%g1 + %lo(sun4v_chip_type)], %g1
|
|
cmp %g1, SUN4V_CHIP_NIAGARA1
|
|
be,pt %xcc, niagara_patch
|
|
cmp %g1, SUN4V_CHIP_NIAGARA2
|
|
be,pt %xcc, niagara2_patch
|
|
nop
|
|
cmp %g1, SUN4V_CHIP_NIAGARA3
|
|
be,pt %xcc, niagara2_patch
|
|
nop
|
|
cmp %g1, SUN4V_CHIP_NIAGARA4
|
|
be,pt %xcc, niagara4_patch
|
|
nop
|
|
cmp %g1, SUN4V_CHIP_NIAGARA5
|
|
be,pt %xcc, niagara4_patch
|
|
nop
|
|
cmp %g1, SUN4V_CHIP_SPARC_M6
|
|
be,pt %xcc, niagara4_patch
|
|
nop
|
|
cmp %g1, SUN4V_CHIP_SPARC_M7
|
|
be,pt %xcc, sparc_m7_patch
|
|
nop
|
|
cmp %g1, SUN4V_CHIP_SPARC_M8
|
|
be,pt %xcc, sparc_m7_patch
|
|
nop
|
|
cmp %g1, SUN4V_CHIP_SPARC_SN
|
|
be,pt %xcc, niagara4_patch
|
|
nop
|
|
|
|
call generic_patch_copyops
|
|
nop
|
|
call generic_patch_bzero
|
|
nop
|
|
call generic_patch_pageops
|
|
nop
|
|
|
|
ba,a,pt %xcc, 80f
|
|
nop
|
|
|
|
sparc_m7_patch:
|
|
call m7_patch_copyops
|
|
nop
|
|
call m7_patch_bzero
|
|
nop
|
|
call m7_patch_pageops
|
|
nop
|
|
|
|
ba,a,pt %xcc, 80f
|
|
nop
|
|
|
|
niagara4_patch:
|
|
call niagara4_patch_copyops
|
|
nop
|
|
call niagara4_patch_bzero
|
|
nop
|
|
call niagara4_patch_pageops
|
|
nop
|
|
|
|
ba,a,pt %xcc, 80f
|
|
nop
|
|
|
|
niagara2_patch:
|
|
call niagara2_patch_copyops
|
|
nop
|
|
call niagara_patch_bzero
|
|
nop
|
|
call niagara_patch_pageops
|
|
nop
|
|
|
|
ba,a,pt %xcc, 80f
|
|
nop
|
|
|
|
niagara_patch:
|
|
call niagara_patch_copyops
|
|
nop
|
|
call niagara_patch_bzero
|
|
nop
|
|
call niagara_patch_pageops
|
|
nop
|
|
|
|
80:
|
|
/* Patch TLB/cache ops. */
|
|
call hypervisor_patch_cachetlbops
|
|
nop
|
|
|
|
ba,a,pt %xcc, tlb_fixup_done
|
|
|
|
cheetah_tlb_fixup:
|
|
mov 2, %g2 /* Set TLB type to cheetah+. */
|
|
BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,1f)
|
|
|
|
mov 1, %g2 /* Set TLB type to cheetah. */
|
|
|
|
1: sethi %hi(tlb_type), %g1
|
|
stw %g2, [%g1 + %lo(tlb_type)]
|
|
|
|
/* Patch copy/page operations to cheetah optimized versions. */
|
|
call cheetah_patch_copyops
|
|
nop
|
|
call cheetah_patch_copy_page
|
|
nop
|
|
call cheetah_patch_cachetlbops
|
|
nop
|
|
|
|
ba,a,pt %xcc, tlb_fixup_done
|
|
|
|
spitfire_tlb_fixup:
|
|
/* Set TLB type to spitfire. */
|
|
mov 0, %g2
|
|
sethi %hi(tlb_type), %g1
|
|
stw %g2, [%g1 + %lo(tlb_type)]
|
|
|
|
tlb_fixup_done:
|
|
sethi %hi(init_thread_union), %g6
|
|
or %g6, %lo(init_thread_union), %g6
|
|
ldx [%g6 + TI_TASK], %g4
|
|
|
|
wr %g0, ASI_P, %asi
|
|
mov 1, %g1
|
|
sllx %g1, THREAD_SHIFT, %g1
|
|
sub %g1, (STACKFRAME_SZ + STACK_BIAS), %g1
|
|
add %g6, %g1, %sp
|
|
|
|
/* Set per-cpu pointer initially to zero, this makes
|
|
* the boot-cpu use the in-kernel-image per-cpu areas
|
|
* before setup_per_cpu_area() is invoked.
|
|
*/
|
|
clr %g5
|
|
|
|
wrpr %g0, 0, %wstate
|
|
wrpr %g0, 0x0, %tl
|
|
|
|
/* Clear the bss */
|
|
sethi %hi(__bss_start), %o0
|
|
or %o0, %lo(__bss_start), %o0
|
|
sethi %hi(_end), %o1
|
|
or %o1, %lo(_end), %o1
|
|
call __bzero
|
|
sub %o1, %o0, %o1
|
|
|
|
call prom_init
|
|
mov %l7, %o0 ! OpenPROM cif handler
|
|
|
|
/* To create a one-register-window buffer between the kernel's
|
|
* initial stack and the last stack frame we use from the firmware,
|
|
* do the rest of the boot from a C helper function.
|
|
*/
|
|
call start_early_boot
|
|
nop
|
|
/* Not reached... */
|
|
|
|
.previous
|
|
|
|
/* This is meant to allow the sharing of this code between
|
|
* boot processor invocation (via setup_tba() below) and
|
|
* secondary processor startup (via trampoline.S). The
|
|
* former does use this code, the latter does not yet due
|
|
* to some complexities. That should be fixed up at some
|
|
* point.
|
|
*
|
|
* There used to be enormous complexity wrt. transferring
|
|
* over from the firmware's trap table to the Linux kernel's.
|
|
* For example, there was a chicken & egg problem wrt. building
|
|
* the OBP page tables, yet needing to be on the Linux kernel
|
|
* trap table (to translate PAGE_OFFSET addresses) in order to
|
|
* do that.
|
|
*
|
|
* We now handle OBP tlb misses differently, via linear lookups
|
|
* into the prom_trans[] array. So that specific problem no
|
|
* longer exists. Yet, unfortunately there are still some issues
|
|
* preventing trampoline.S from using this code... ho hum.
|
|
*/
|
|
.globl setup_trap_table
|
|
setup_trap_table:
|
|
save %sp, -192, %sp
|
|
|
|
/* Force interrupts to be disabled. */
|
|
rdpr %pstate, %l0
|
|
andn %l0, PSTATE_IE, %o1
|
|
wrpr %o1, 0x0, %pstate
|
|
rdpr %pil, %l1
|
|
wrpr %g0, PIL_NORMAL_MAX, %pil
|
|
|
|
/* Make the firmware call to jump over to the Linux trap table. */
|
|
sethi %hi(is_sun4v), %o0
|
|
lduw [%o0 + %lo(is_sun4v)], %o0
|
|
brz,pt %o0, 1f
|
|
nop
|
|
|
|
TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
|
|
add %g2, TRAP_PER_CPU_FAULT_INFO, %g2
|
|
stxa %g2, [%g0] ASI_SCRATCHPAD
|
|
|
|
/* Compute physical address:
|
|
*
|
|
* paddr = kern_base + (mmfsa_vaddr - KERNBASE)
|
|
*/
|
|
sethi %hi(KERNBASE), %g3
|
|
sub %g2, %g3, %g2
|
|
sethi %hi(kern_base), %g3
|
|
ldx [%g3 + %lo(kern_base)], %g3
|
|
add %g2, %g3, %o1
|
|
sethi %hi(sparc64_ttable_tl0), %o0
|
|
|
|
set prom_set_trap_table_name, %g2
|
|
stx %g2, [%sp + 2047 + 128 + 0x00]
|
|
mov 2, %g2
|
|
stx %g2, [%sp + 2047 + 128 + 0x08]
|
|
mov 0, %g2
|
|
stx %g2, [%sp + 2047 + 128 + 0x10]
|
|
stx %o0, [%sp + 2047 + 128 + 0x18]
|
|
stx %o1, [%sp + 2047 + 128 + 0x20]
|
|
sethi %hi(p1275buf), %g2
|
|
or %g2, %lo(p1275buf), %g2
|
|
ldx [%g2 + 0x08], %o1
|
|
call %o1
|
|
add %sp, (2047 + 128), %o0
|
|
|
|
ba,a,pt %xcc, 2f
|
|
|
|
1: sethi %hi(sparc64_ttable_tl0), %o0
|
|
set prom_set_trap_table_name, %g2
|
|
stx %g2, [%sp + 2047 + 128 + 0x00]
|
|
mov 1, %g2
|
|
stx %g2, [%sp + 2047 + 128 + 0x08]
|
|
mov 0, %g2
|
|
stx %g2, [%sp + 2047 + 128 + 0x10]
|
|
stx %o0, [%sp + 2047 + 128 + 0x18]
|
|
sethi %hi(p1275buf), %g2
|
|
or %g2, %lo(p1275buf), %g2
|
|
ldx [%g2 + 0x08], %o1
|
|
call %o1
|
|
add %sp, (2047 + 128), %o0
|
|
|
|
/* Start using proper page size encodings in ctx register. */
|
|
2: sethi %hi(sparc64_kern_pri_context), %g3
|
|
ldx [%g3 + %lo(sparc64_kern_pri_context)], %g2
|
|
|
|
mov PRIMARY_CONTEXT, %g1
|
|
|
|
661: stxa %g2, [%g1] ASI_DMMU
|
|
.section .sun4v_1insn_patch, "ax"
|
|
.word 661b
|
|
stxa %g2, [%g1] ASI_MMU
|
|
.previous
|
|
|
|
membar #Sync
|
|
|
|
BRANCH_IF_SUN4V(o2, 1f)
|
|
|
|
/* Kill PROM timer */
|
|
sethi %hi(0x80000000), %o2
|
|
sllx %o2, 32, %o2
|
|
wr %o2, 0, %tick_cmpr
|
|
|
|
BRANCH_IF_ANY_CHEETAH(o2, o3, 1f)
|
|
|
|
ba,a,pt %xcc, 2f
|
|
|
|
/* Disable STICK_INT interrupts. */
|
|
1:
|
|
sethi %hi(0x80000000), %o2
|
|
sllx %o2, 32, %o2
|
|
wr %o2, %asr25
|
|
|
|
2:
|
|
wrpr %g0, %g0, %wstate
|
|
|
|
call init_irqwork_curcpu
|
|
nop
|
|
|
|
/* Now we can restore interrupt state. */
|
|
wrpr %l0, 0, %pstate
|
|
wrpr %l1, 0x0, %pil
|
|
|
|
ret
|
|
restore
|
|
|
|
.globl setup_tba
|
|
setup_tba:
|
|
save %sp, -192, %sp
|
|
|
|
/* The boot processor is the only cpu which invokes this
|
|
* routine, the other cpus set things up via trampoline.S.
|
|
* So save the OBP trap table address here.
|
|
*/
|
|
rdpr %tba, %g7
|
|
sethi %hi(prom_tba), %o1
|
|
or %o1, %lo(prom_tba), %o1
|
|
stx %g7, [%o1]
|
|
|
|
call setup_trap_table
|
|
nop
|
|
|
|
ret
|
|
restore
|
|
sparc64_boot_end:
|
|
|
|
#include "etrap_64.S"
|
|
#include "rtrap_64.S"
|
|
#include "winfixup.S"
|
|
#include "fpu_traps.S"
|
|
#include "ivec.S"
|
|
#include "getsetcc.S"
|
|
#include "utrap.S"
|
|
#include "spiterrs.S"
|
|
#include "cherrs.S"
|
|
#include "misctrap.S"
|
|
#include "syscalls.S"
|
|
#include "helpers.S"
|
|
#include "sun4v_tlb_miss.S"
|
|
#include "sun4v_ivec.S"
|
|
#include "ktlb.S"
|
|
#include "tsb.S"
|
|
|
|
/*
|
|
* The following skip makes sure the trap table in ttable.S is aligned
|
|
* on a 32K boundary as required by the v9 specs for TBA register.
|
|
*
|
|
* We align to a 32K boundary, then we have the 32K kernel TSB,
|
|
* the 64K kernel 4MB TSB, and then the 32K aligned trap table.
|
|
*/
|
|
1:
|
|
.skip 0x4000 + _start - 1b
|
|
|
|
! 0x0000000000408000
|
|
|
|
.globl swapper_tsb
|
|
swapper_tsb:
|
|
.skip (32 * 1024)
|
|
|
|
.globl swapper_4m_tsb
|
|
swapper_4m_tsb:
|
|
.skip (64 * 1024)
|
|
|
|
! 0x0000000000420000
|
|
|
|
/* Some care needs to be exercised if you try to move the
|
|
* location of the trap table relative to other things. For
|
|
* one thing there are br* instructions in some of the
|
|
* trap table entires which branch back to code in ktlb.S
|
|
* Those instructions can only handle a signed 16-bit
|
|
* displacement.
|
|
*
|
|
* There is a binutils bug (bugzilla #4558) which causes
|
|
* the relocation overflow checks for such instructions to
|
|
* not be done correctly. So bintuils will not notice the
|
|
* error and will instead write junk into the relocation and
|
|
* you'll have an unbootable kernel.
|
|
*/
|
|
#include "ttable_64.S"
|
|
|
|
! 0x0000000000428000
|
|
|
|
#include "hvcalls.S"
|
|
#include "systbls_64.S"
|
|
|
|
.data
|
|
.align 8
|
|
.globl prom_tba, tlb_type
|
|
prom_tba: .xword 0
|
|
tlb_type: .word 0 /* Must NOT end up in BSS */
|
|
EXPORT_SYMBOL(tlb_type)
|
|
.section ".fixup",#alloc,#execinstr
|
|
|
|
ENTRY(__retl_efault)
|
|
retl
|
|
mov -EFAULT, %o0
|
|
ENDPROC(__retl_efault)
|
|
|
|
ENTRY(__retl_o1)
|
|
retl
|
|
mov %o1, %o0
|
|
ENDPROC(__retl_o1)
|
|
|
|
ENTRY(__retl_o1_asi)
|
|
wr %o5, 0x0, %asi
|
|
retl
|
|
mov %o1, %o0
|
|
ENDPROC(__retl_o1_asi)
|