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96 lines
2.4 KiB
96 lines
2.4 KiB
/* 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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