2 * OMAP34xx and OMAP44xx secure APIs file.
4 * Copyright (C) 2010 Texas Instruments, Inc.
5 * Written by Santosh Shilimkar <santosh.shilimkar@ti.com>
7 * Copyright (C) 2012 Ivaylo Dimitrov <freemangordon@abv.bg>
8 * Copyright (C) 2013 Pali Rohár <pali.rohar@gmail.com>
10 * This program is free software,you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/linkage.h>
18 * This is common routine to manage secure monitor API
19 * used to modify the PL310 secure registers.
20 * 'r0' contains the value to be modified and 'r12' contains
21 * the monitor API number. It uses few CPU registers
22 * internally and hence they need be backed up including
24 * Function signature : void omap_smc1(u32 fn, u32 arg)
28 stmfd sp!, {r2-r12, lr}
33 ldmfd sp!, {r2-r12, pc}
37 * u32 omap_smc2(u32 id, u32 falg, u32 pargs)
38 * Low level common routine for secure HAL and PPA APIs.
39 * @id: Application ID of HAL APIs
40 * @flag: Flag to indicate the criticality of operation
41 * @pargs: Physical address of parameter list starting
42 * with number of parametrs
45 stmfd sp!, {r4-r12, lr}
48 mov r1, #0x0 @ Process ID
50 mov r12, #0x00 @ Secure Service ID
52 mcr p15, 0, r7, c7, c5, 6
56 ldmfd sp!, {r4-r12, pc}
60 * u32 omap_smc3(u32 service_id, u32 process_id, u32 flag, u32 pargs)
61 * Low level common routine for secure HAL and PPA APIs via smc #1
62 * r0 - @service_id: Secure Service ID
63 * r1 - @process_id: Process ID
64 * r2 - @flag: Flag to indicate the criticality of operation
65 * r3 - @pargs: Physical address of parameter list
68 stmfd sp!, {r4-r11, lr}
69 mov r12, r0 @ Copy the secure service ID
70 mov r6, #0xff @ Indicate new Task call
71 dsb @ Memory Barrier (not sure if needed, copied from omap_smc2)
72 smc #1 @ Call PPA service
73 ldmfd sp!, {r4-r11, pc}
76 ENTRY(omap_modify_auxcoreboot0)
77 stmfd sp!, {r1-r12, lr}
81 ldmfd sp!, {r1-r12, pc}
82 ENDPROC(omap_modify_auxcoreboot0)
84 ENTRY(omap_auxcoreboot_addr)
85 stmfd sp!, {r2-r12, lr}
89 ldmfd sp!, {r2-r12, pc}
90 ENDPROC(omap_auxcoreboot_addr)
92 ENTRY(omap_read_auxcoreboot0)
93 stmfd sp!, {r2-r12, lr}
98 ldmfd sp!, {r2-r12, pc}
99 ENDPROC(omap_read_auxcoreboot0)