mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 00:40:55 +07:00
ba9456ac9c
On OMAP secure/emulation devices, certain APIs are exported by secure code. Add an infrastructure so that relevant operations on secure devices can be implemented using it. While at this, rename omap44xx-smc.S to omap-smc.S since the common APIs can be used on other OMAP's too. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Jean Pihet <j-pihet@ti.com> Reviewed-by: Kevin Hilman <khilman@ti.com> Tested-by: Vishwanath BS <vishwanath.bs@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
81 lines
1.8 KiB
ArmAsm
81 lines
1.8 KiB
ArmAsm
/*
|
|
* OMAP44xx secure APIs file.
|
|
*
|
|
* Copyright (C) 2010 Texas Instruments, Inc.
|
|
* Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
|
|
*
|
|
*
|
|
* This program is free software,you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
/*
|
|
* This is common routine to manage secure monitor API
|
|
* used to modify the PL310 secure registers.
|
|
* 'r0' contains the value to be modified and 'r12' contains
|
|
* the monitor API number. It uses few CPU registers
|
|
* internally and hence they need be backed up including
|
|
* link register "lr".
|
|
* Function signature : void omap_smc1(u32 fn, u32 arg)
|
|
*/
|
|
|
|
ENTRY(omap_smc1)
|
|
stmfd sp!, {r2-r12, lr}
|
|
mov r12, r0
|
|
mov r0, r1
|
|
dsb
|
|
smc #0
|
|
ldmfd sp!, {r2-r12, pc}
|
|
ENDPROC(omap_smc1)
|
|
|
|
/**
|
|
* u32 omap_smc2(u32 id, u32 falg, u32 pargs)
|
|
* Low level common routine for secure HAL and PPA APIs.
|
|
* @id: Application ID of HAL APIs
|
|
* @flag: Flag to indicate the criticality of operation
|
|
* @pargs: Physical address of parameter list starting
|
|
* with number of parametrs
|
|
*/
|
|
ENTRY(omap_smc2)
|
|
stmfd sp!, {r4-r12, lr}
|
|
mov r3, r2
|
|
mov r2, r1
|
|
mov r1, #0x0 @ Process ID
|
|
mov r6, #0xff
|
|
mov r12, #0x00 @ Secure Service ID
|
|
mov r7, #0
|
|
mcr p15, 0, r7, c7, c5, 6
|
|
dsb
|
|
dmb
|
|
smc #0
|
|
ldmfd sp!, {r4-r12, pc}
|
|
ENDPROC(omap_smc2)
|
|
|
|
ENTRY(omap_modify_auxcoreboot0)
|
|
stmfd sp!, {r1-r12, lr}
|
|
ldr r12, =0x104
|
|
dsb
|
|
smc #0
|
|
ldmfd sp!, {r1-r12, pc}
|
|
ENDPROC(omap_modify_auxcoreboot0)
|
|
|
|
ENTRY(omap_auxcoreboot_addr)
|
|
stmfd sp!, {r2-r12, lr}
|
|
ldr r12, =0x105
|
|
dsb
|
|
smc #0
|
|
ldmfd sp!, {r2-r12, pc}
|
|
ENDPROC(omap_auxcoreboot_addr)
|
|
|
|
ENTRY(omap_read_auxcoreboot0)
|
|
stmfd sp!, {r2-r12, lr}
|
|
ldr r12, =0x103
|
|
dsb
|
|
smc #0
|
|
mov r0, r0, lsr #9
|
|
ldmfd sp!, {r2-r12, pc}
|
|
ENDPROC(omap_read_auxcoreboot0)
|