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ba9456ac SS |
1 | /* |
2 | * OMAP Secure API infrastructure. | |
3 | * | |
4 | * Copyright (C) 2011 Texas Instruments, Inc. | |
5 | * Santosh Shilimkar <santosh.shilimkar@ti.com> | |
6 | * | |
7 | * | |
8 | * This program is free software,you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/kernel.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/io.h> | |
259ee57a | 16 | #include <linux/memblock.h> |
ba9456ac SS |
17 | |
18 | #include <asm/cacheflush.h> | |
716a3dc2 | 19 | #include <asm/memblock.h> |
ba9456ac | 20 | |
c1db9d73 | 21 | #include "omap-secure.h" |
ba9456ac | 22 | |
259ee57a SS |
23 | static phys_addr_t omap_secure_memblock_base; |
24 | ||
ba9456ac SS |
25 | /** |
26 | * omap_sec_dispatcher: Routine to dispatch low power secure | |
27 | * service routines | |
28 | * @idx: The HAL API index | |
29 | * @flag: The flag indicating criticality of operation | |
30 | * @nargs: Number of valid arguments out of four. | |
31 | * @arg1, arg2, arg3 args4: Parameters passed to secure API | |
32 | * | |
33 | * Return the non-zero error value on failure. | |
34 | */ | |
35 | u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, u32 arg1, u32 arg2, | |
36 | u32 arg3, u32 arg4) | |
37 | { | |
38 | u32 ret; | |
39 | u32 param[5]; | |
40 | ||
41 | param[0] = nargs; | |
42 | param[1] = arg1; | |
43 | param[2] = arg2; | |
44 | param[3] = arg3; | |
45 | param[4] = arg4; | |
46 | ||
47 | /* | |
48 | * Secure API needs physical address | |
49 | * pointer for the parameters | |
50 | */ | |
51 | flush_cache_all(); | |
52 | outer_clean_range(__pa(param), __pa(param + 5)); | |
53 | ret = omap_smc2(idx, flag, __pa(param)); | |
54 | ||
55 | return ret; | |
56 | } | |
259ee57a SS |
57 | |
58 | /* Allocate the memory to save secure ram */ | |
59 | int __init omap_secure_ram_reserve_memblock(void) | |
60 | { | |
259ee57a SS |
61 | u32 size = OMAP_SECURE_RAM_STORAGE; |
62 | ||
7a285290 S |
63 | size = ALIGN(size, SECTION_SIZE); |
64 | omap_secure_memblock_base = arm_memblock_steal(size, SECTION_SIZE); | |
259ee57a SS |
65 | |
66 | return 0; | |
67 | } | |
68 | ||
69 | phys_addr_t omap_secure_ram_mempool_base(void) | |
70 | { | |
71 | return omap_secure_memblock_base; | |
72 | } |