Santosh Shilimkar | ba9456a | 2011-06-06 17:56:49 +0530 | [diff] [blame] | 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> |
Santosh Shilimkar | 259ee57 | 2011-06-06 20:28:23 +0530 | [diff] [blame] | 16 | #include <linux/memblock.h> |
Santosh Shilimkar | ba9456a | 2011-06-06 17:56:49 +0530 | [diff] [blame] | 17 | |
| 18 | #include <asm/cacheflush.h> |
Russell King | 716a3dc | 2012-01-13 15:00:51 +0000 | [diff] [blame] | 19 | #include <asm/memblock.h> |
Santosh Shilimkar | ba9456a | 2011-06-06 17:56:49 +0530 | [diff] [blame] | 20 | |
Paul Walmsley | e2ed89f | 2012-04-13 06:34:26 -0600 | [diff] [blame] | 21 | #include <plat/omap-secure.h> |
Tony Lindgren | c1db9d7 | 2012-09-20 11:41:14 -0700 | [diff] [blame] | 22 | #include "omap-secure.h" |
Santosh Shilimkar | ba9456a | 2011-06-06 17:56:49 +0530 | [diff] [blame] | 23 | |
Santosh Shilimkar | 259ee57 | 2011-06-06 20:28:23 +0530 | [diff] [blame] | 24 | static phys_addr_t omap_secure_memblock_base; |
| 25 | |
Santosh Shilimkar | ba9456a | 2011-06-06 17:56:49 +0530 | [diff] [blame] | 26 | /** |
| 27 | * omap_sec_dispatcher: Routine to dispatch low power secure |
| 28 | * service routines |
| 29 | * @idx: The HAL API index |
| 30 | * @flag: The flag indicating criticality of operation |
| 31 | * @nargs: Number of valid arguments out of four. |
| 32 | * @arg1, arg2, arg3 args4: Parameters passed to secure API |
| 33 | * |
| 34 | * Return the non-zero error value on failure. |
| 35 | */ |
| 36 | u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, u32 arg1, u32 arg2, |
| 37 | u32 arg3, u32 arg4) |
| 38 | { |
| 39 | u32 ret; |
| 40 | u32 param[5]; |
| 41 | |
| 42 | param[0] = nargs; |
| 43 | param[1] = arg1; |
| 44 | param[2] = arg2; |
| 45 | param[3] = arg3; |
| 46 | param[4] = arg4; |
| 47 | |
| 48 | /* |
| 49 | * Secure API needs physical address |
| 50 | * pointer for the parameters |
| 51 | */ |
| 52 | flush_cache_all(); |
| 53 | outer_clean_range(__pa(param), __pa(param + 5)); |
| 54 | ret = omap_smc2(idx, flag, __pa(param)); |
| 55 | |
| 56 | return ret; |
| 57 | } |
Santosh Shilimkar | 259ee57 | 2011-06-06 20:28:23 +0530 | [diff] [blame] | 58 | |
| 59 | /* Allocate the memory to save secure ram */ |
| 60 | int __init omap_secure_ram_reserve_memblock(void) |
| 61 | { |
Santosh Shilimkar | 259ee57 | 2011-06-06 20:28:23 +0530 | [diff] [blame] | 62 | u32 size = OMAP_SECURE_RAM_STORAGE; |
| 63 | |
R Sricharan | 7a28529 | 2012-09-12 12:44:13 +0530 | [diff] [blame] | 64 | size = ALIGN(size, SECTION_SIZE); |
| 65 | omap_secure_memblock_base = arm_memblock_steal(size, SECTION_SIZE); |
Santosh Shilimkar | 259ee57 | 2011-06-06 20:28:23 +0530 | [diff] [blame] | 66 | |
| 67 | return 0; |
| 68 | } |
| 69 | |
| 70 | phys_addr_t omap_secure_ram_mempool_base(void) |
| 71 | { |
| 72 | return omap_secure_memblock_base; |
| 73 | } |