diff options
| -rw-r--r-- | arch/arm/mach-omap2/include/mach/omap-secure.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/omap-secure.c | 29 | ||||
| -rw-r--r-- | arch/arm/plat-omap/common.c | 3 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/omap-secure.h | 13 |
4 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/include/mach/omap-secure.h b/arch/arm/mach-omap2/include/mach/omap-secure.h index 26e7bcc49ad..29f60cae45e 100644 --- a/arch/arm/mach-omap2/include/mach/omap-secure.h +++ b/arch/arm/mach-omap2/include/mach/omap-secure.h @@ -26,6 +26,8 @@ #define FLAG_FIQ_ENABLE 0x1 #define NO_FLAG 0x0 +/* Maximum Secure memory storage size */ +#define OMAP_SECURE_RAM_STORAGE (88 * SZ_1K) /* Secure low power HAL API index */ #define OMAP4_HAL_SAVESECURERAM_INDEX 0x1a @@ -36,5 +38,6 @@ extern u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, u32 arg1, u32 arg2, u32 arg3, u32 arg4); extern u32 omap_smc2(u32 id, u32 falg, u32 pargs); +extern phys_addr_t omap_secure_ram_mempool_base(void); #endif /* OMAP_ARCH_OMAP_SECURE_H */ diff --git a/arch/arm/mach-omap2/omap-secure.c b/arch/arm/mach-omap2/omap-secure.c index e5a606e59b1..69f3c72d959 100644 --- a/arch/arm/mach-omap2/omap-secure.c +++ b/arch/arm/mach-omap2/omap-secure.c @@ -13,11 +13,14 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/io.h> +#include <linux/memblock.h> #include <asm/cacheflush.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 @@ -50,3 +53,29 @@ u32 omap_secure_dispatcher(u32 idx, u32 flag, u32 nargs, u32 arg1, u32 arg2, return ret; } + +/* Allocate the memory to save secure ram */ +int __init omap_secure_ram_reserve_memblock(void) +{ + phys_addr_t paddr; + u32 size = OMAP_SECURE_RAM_STORAGE; + + size = ALIGN(size, SZ_1M); + paddr = memblock_alloc(size, SZ_1M); + if (!paddr) { + pr_err("%s: failed to reserve %x bytes\n", + __func__, size); + return -ENOMEM; + } + memblock_free(paddr, size); + memblock_remove(paddr, size); + + omap_secure_memblock_base = paddr; + + return 0; +} + +phys_addr_t omap_secure_ram_mempool_base(void) +{ + return omap_secure_memblock_base; +} diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c index 2ee6341fffd..06383b51e65 100644 --- a/arch/arm/plat-omap/common.c +++ b/arch/arm/plat-omap/common.c @@ -22,6 +22,8 @@ #include <plat/vram.h> #include <plat/dsp.h> +#include <plat/omap-secure.h> + #define NO_LENGTH_CHECK 0xffffffff @@ -66,6 +68,7 @@ void __init omap_reserve(void) omapfb_reserve_sdram_memblock(); omap_vram_reserve_sdram_memblock(); omap_dsp_reserve_sdram_memblock(); + omap_secure_ram_reserve_memblock(); } void __init omap_init_consistent_dma_size(void) diff --git a/arch/arm/plat-omap/include/plat/omap-secure.h b/arch/arm/plat-omap/include/plat/omap-secure.h new file mode 100644 index 00000000000..64f9d1c7f1b --- /dev/null +++ b/arch/arm/plat-omap/include/plat/omap-secure.h @@ -0,0 +1,13 @@ +#ifndef __OMAP_SECURE_H__ +#define __OMAP_SECURE_H__ + +#include <linux/types.h> + +#ifdef CONFIG_ARCH_OMAP2PLUS +extern int omap_secure_ram_reserve_memblock(void); +#else +static inline void omap_secure_ram_reserve_memblock(void) +{ } +#endif + +#endif /* __OMAP_SECURE_H__ */ |