1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * OMAP34xx and OMAP44xx secure APIs file.
5 * Copyright (C) 2010 Texas Instruments, Inc.
6 * Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
8 * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
9 * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
12 #include <linux/linkage.h>
15 * This is common routine to manage secure monitor API
16 * used to modify the PL310 secure registers.
17 * 'r0' contains the value to be modified and 'r12' contains
18 * the monitor API number. It uses few CPU registers
19 * internally and hence they need be backed up including
21 * Function signature : void omap_smc1(u32 fn, u32 arg)
25 stmfd sp!, {r2-r12, lr}
30 ldmfd sp!, {r2-r12, pc}
34 * u32 omap_smc2(u32 id, u32 falg, u32 pargs)
35 * Low level common routine for secure HAL and PPA APIs.
36 * @id: Application ID of HAL APIs
37 * @flag: Flag to indicate the criticality of operation
38 * @pargs: Physical address of parameter list starting
39 * with number of parametrs
42 stmfd sp!, {r4-r12, lr}
45 mov r1, #0x0 @ Process ID
47 mov r12, #0x00 @ Secure Service ID
49 mcr p15, 0, r7, c7, c5, 6
53 ldmfd sp!, {r4-r12, pc}
57 * u32 omap_smc3(u32 service_id, u32 process_id, u32 flag, u32 pargs)
58 * Low level common routine for secure HAL and PPA APIs via smc #1
59 * r0 - @service_id: Secure Service ID
60 * r1 - @process_id: Process ID
61 * r2 - @flag: Flag to indicate the criticality of operation
62 * r3 - @pargs: Physical address of parameter list
65 stmfd sp!, {r4-r11, lr}
66 mov r12, r0 @ Copy the secure service ID
67 mov r6, #0xff @ Indicate new Task call
68 dsb @ Memory Barrier (not sure if needed, copied from omap_smc2)
69 smc #1 @ Call PPA service
70 ldmfd sp!, {r4-r11, pc}
73 ENTRY(omap_modify_auxcoreboot0)
74 stmfd sp!, {r1-r12, lr}
78 ldmfd sp!, {r1-r12, pc}
79 ENDPROC(omap_modify_auxcoreboot0)
81 ENTRY(omap_auxcoreboot_addr)
82 stmfd sp!, {r2-r12, lr}
86 ldmfd sp!, {r2-r12, pc}
87 ENDPROC(omap_auxcoreboot_addr)
89 ENTRY(omap_read_auxcoreboot0)
90 stmfd sp!, {r2-r12, lr}
94 ldmfd sp!, {r2-r12, pc}
95 ENDPROC(omap_read_auxcoreboot0)