diff options
Diffstat (limited to 'arch/arm/mach-omap2/omap-secure.c')
-rw-r--r-- | arch/arm/mach-omap2/omap-secure.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c new file mode 100644 index 00000000000..d8f8ef40290 --- /dev/null +++ b/arch/arm/mach-omap2/omap-secure.c @@ -0,0 +1,72 @@ +/* + * OMAP Secure API infrastructure. + * + * Copyright (C) 2011 Texas Instruments, Inc. + * Santosh Shilimkar <santosh.shilimkar@ti.com> + * + * + * This program is free software,you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/memblock.h> + +#include <asm/cacheflush.h> +#include <asm/memblock.h> + +#include <mach/omap-secure.h> + +static phys_addr_t omap_secure_memblock_base; + +/** + * omap_sec_dispatcher: Routine to dispatch low power secure + * service routines + * @idx: The HAL API index + * @flag: The flag indicating criticality of operation + * @nargs: Number of valid arguments out of four. + * @arg1, arg2, arg3 args4: Parameters passed to secure API + * + * Return the non-zero error value on failure. + */ +u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, u32 arg1, u32 arg2, + u32 arg3, u32 arg4) +{ + u32 ret; + u32 param[5]; + + param[0] = nargs; + param[1] = arg1; + param[2] = arg2; + param[3] = arg3; + param[4] = arg4; + + /* + * Secure API needs physical address + * pointer for the parameters + */ + flush_cache_all(); + outer_clean_range(__pa(param), __pa(param + 5)); + ret = omap_smc2(idx, flag, __pa(param)); + + return ret; +} + +/* Allocate the memory to save secure ram */ +int __init omap_secure_ram_reserve_memblock(void) +{ + u32 size = OMAP_SECURE_RAM_STORAGE; + + size = ALIGN(size, SZ_1M); + omap_secure_memblock_base = arm_memblock_steal(size, SZ_1M); + + return 0; +} + +phys_addr_t omap_secure_ram_mempool_base(void) +{ + return omap_secure_memblock_base; +} |