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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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149ed3d404
For security reasons I stopped using gmail account and kernel address is now up-to-date alias to my personal address. People periodically send me emails to address which they found in source code of drivers, so this change reflects state where people can contact me. [ Added .mailmap entry as per Joe Perches - Linus ] Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Joe Perches <joe@perches.com> Link: http://lkml.kernel.org/r/20200307104237.8199-1-pali@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
97 lines
2.4 KiB
ArmAsm
97 lines
2.4 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* OMAP34xx and OMAP44xx secure APIs file.
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*
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* Copyright (C) 2010 Texas Instruments, Inc.
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* Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
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*
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* Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
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* Copyright (C) 2013 Pali Rohár <pali@kernel.org>
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*/
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#include <linux/linkage.h>
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/*
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* This is common routine to manage secure monitor API
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* used to modify the PL310 secure registers.
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* 'r0' contains the value to be modified and 'r12' contains
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* the monitor API number. It uses few CPU registers
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* internally and hence they need be backed up including
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* link register "lr".
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* Function signature : void _omap_smc1(u32 fn, u32 arg)
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*/
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.arch armv7-a
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.arch_extension sec
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ENTRY(_omap_smc1)
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stmfd sp!, {r2-r12, lr}
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mov r12, r0
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mov r0, r1
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dsb
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smc #0
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ldmfd sp!, {r2-r12, pc}
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ENDPROC(_omap_smc1)
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/**
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* u32 omap_smc2(u32 id, u32 falg, u32 pargs)
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* Low level common routine for secure HAL and PPA APIs.
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* @id: Application ID of HAL APIs
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* @flag: Flag to indicate the criticality of operation
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* @pargs: Physical address of parameter list starting
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* with number of parametrs
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*/
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ENTRY(omap_smc2)
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stmfd sp!, {r4-r12, lr}
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mov r3, r2
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mov r2, r1
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mov r1, #0x0 @ Process ID
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mov r6, #0xff
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mov r12, #0x00 @ Secure Service ID
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mov r7, #0
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mcr p15, 0, r7, c7, c5, 6
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dsb
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dmb
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smc #0
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ldmfd sp!, {r4-r12, pc}
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ENDPROC(omap_smc2)
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/**
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* u32 omap_smc3(u32 service_id, u32 process_id, u32 flag, u32 pargs)
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* Low level common routine for secure HAL and PPA APIs via smc #1
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* r0 - @service_id: Secure Service ID
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* r1 - @process_id: Process ID
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* r2 - @flag: Flag to indicate the criticality of operation
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* r3 - @pargs: Physical address of parameter list
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*/
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ENTRY(omap_smc3)
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stmfd sp!, {r4-r11, lr}
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mov r12, r0 @ Copy the secure service ID
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mov r6, #0xff @ Indicate new Task call
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dsb @ Memory Barrier (not sure if needed, copied from omap_smc2)
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smc #1 @ Call PPA service
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ldmfd sp!, {r4-r11, pc}
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ENDPROC(omap_smc3)
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ENTRY(omap_modify_auxcoreboot0)
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stmfd sp!, {r1-r12, lr}
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ldr r12, =0x104
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dsb
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smc #0
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ldmfd sp!, {r1-r12, pc}
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ENDPROC(omap_modify_auxcoreboot0)
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ENTRY(omap_auxcoreboot_addr)
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stmfd sp!, {r2-r12, lr}
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ldr r12, =0x105
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dsb
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smc #0
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ldmfd sp!, {r2-r12, pc}
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ENDPROC(omap_auxcoreboot_addr)
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ENTRY(omap_read_auxcoreboot0)
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stmfd sp!, {r2-r12, lr}
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ldr r12, =0x103
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dsb
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smc #0
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ldmfd sp!, {r2-r12, pc}
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ENDPROC(omap_read_auxcoreboot0)
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