diff options
Diffstat (limited to 'arch/arm/mach-omap2/omap5')
| -rw-r--r-- | arch/arm/mach-omap2/omap5/sec-fxns.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap5/sec-fxns.c b/arch/arm/mach-omap2/omap5/sec-fxns.c index 33d4ea4..7fab575 100644 --- a/arch/arm/mach-omap2/omap5/sec-fxns.c +++ b/arch/arm/mach-omap2/omap5/sec-fxns.c @@ -19,13 +19,30 @@ #include <asm/omap_sec_common.h> #include <asm/spl.h> #include <spl.h> +#include <asm/cache.h> +#include <mapmem.h> +#include <tee/optee.h> /* Index for signature PPA-based TI HAL APIs */ #define PPA_HAL_SERVICES_START_INDEX (0x200) +#define PPA_SERV_HAL_TEE_LOAD_MASTER (PPA_HAL_SERVICES_START_INDEX + 23) +#define PPA_SERV_HAL_TEE_LOAD_SLAVE (PPA_HAL_SERVICES_START_INDEX + 24) #define PPA_SERV_HAL_SETUP_SEC_RESVD_REGION (PPA_HAL_SERVICES_START_INDEX + 25) #define PPA_SERV_HAL_SETUP_EMIF_FW_REGION (PPA_HAL_SERVICES_START_INDEX + 26) #define PPA_SERV_HAL_LOCK_EMIF_FW (PPA_HAL_SERVICES_START_INDEX + 27) +int tee_loaded = 0; + +/* Argument for PPA_SERV_HAL_TEE_LOAD_MASTER */ +struct ppa_tee_load_info { + u32 tee_sec_mem_start; /* Physical start address reserved for TEE */ + u32 tee_sec_mem_size; /* Size of the memory reserved for TEE */ + u32 tee_cert_start; /* Address where signed TEE binary is loaded */ + u32 tee_cert_size; /* Size of TEE certificate (signed binary) */ + u32 tee_jump_addr; /* Address to jump to start TEE execution */ + u32 tee_arg0; /* argument to TEE jump function, in r0 */ +}; + static u32 get_sec_mem_start(void) { u32 sec_mem_start = CONFIG_TI_SECURE_EMIF_REGION_START; @@ -124,3 +141,94 @@ int secure_emif_firewall_lock(void) return result; } + +static struct ppa_tee_load_info tee_info __aligned(ARCH_DMA_MINALIGN); + +int secure_tee_install(u32 addr) +{ + struct optee_header *hdr; + void *loadptr; + u32 tee_file_size; + u32 sec_mem_start = get_sec_mem_start(); + const u32 size = CONFIG_TI_SECURE_EMIF_PROTECTED_REGION_SIZE; + u32 *smc_cpu1_params; + u32 ret; + + /* If there is no protected region, there is no place to put the TEE */ + if (size == 0) { + printf("Error loading TEE, no protected memory region available\n"); + return -ENOBUFS; + } + + hdr = (struct optee_header *)map_sysmem(addr, sizeof(struct optee_header)); + /* 280 bytes = size of signature */ + tee_file_size = hdr->init_size + hdr->paged_size + + sizeof(struct optee_header) + 280; + + if ((hdr->magic != OPTEE_MAGIC) || + (hdr->version != OPTEE_VERSION) || + (hdr->init_load_addr_hi != 0) || + (hdr->init_load_addr_lo < (sec_mem_start + sizeof(struct optee_header))) || + (tee_file_size > size) || + ((hdr->init_load_addr_lo + tee_file_size - 1) > + (sec_mem_start + size - 1))) { + printf("Error in TEE header. Check load address and sizes\n"); + unmap_sysmem(hdr); + return CMD_RET_FAILURE; + } + + tee_info.tee_sec_mem_start = sec_mem_start; + tee_info.tee_sec_mem_size = size; + tee_info.tee_jump_addr = hdr->init_load_addr_lo; + tee_info.tee_cert_start = addr; + tee_info.tee_cert_size = tee_file_size; + tee_info.tee_arg0 = hdr->init_size + tee_info.tee_jump_addr; + unmap_sysmem(hdr); + loadptr = map_sysmem(addr, tee_file_size); + + debug("tee_info.tee_sec_mem_start= %08X\n", tee_info.tee_sec_mem_start); + debug("tee_info.tee_sec_mem_size = %08X\n", tee_info.tee_sec_mem_size); + debug("tee_info.tee_jump_addr = %08X\n", tee_info.tee_jump_addr); + debug("tee_info.tee_cert_start = %08X\n", tee_info.tee_cert_start); + debug("tee_info.tee_cert_size = %08X\n", tee_info.tee_cert_size); + debug("tee_info.tee_arg0 = %08X\n", tee_info.tee_arg0); + debug("tee_file_size = %d\n", tee_file_size); + +#if !defined(CONFIG_SYS_DCACHE_OFF) + flush_dcache_range( + rounddown((u32)loadptr, ARCH_DMA_MINALIGN), + roundup((u32)loadptr + tee_file_size, ARCH_DMA_MINALIGN)); + + flush_dcache_range((u32)&tee_info, (u32)&tee_info + + roundup(sizeof(tee_info), ARCH_DMA_MINALIGN)); +#endif + unmap_sysmem(loadptr); + + ret = secure_rom_call(PPA_SERV_HAL_TEE_LOAD_MASTER, 0, 0, 1, &tee_info); + if (ret) { + printf("TEE_LOAD_MASTER Failed\n"); + return ret; + } + printf("TEE_LOAD_MASTER Done\n"); + + if (!is_dra72x()) { + /* Reuse the tee_info buffer for SMC params */ + smc_cpu1_params = (u32 *)&tee_info; + smc_cpu1_params[0] = 0; +#if !defined(CONFIG_SYS_DCACHE_OFF) + flush_dcache_range((u32)smc_cpu1_params, (u32)smc_cpu1_params + + roundup(sizeof(u32), ARCH_DMA_MINALIGN)); +#endif + ret = omap_smc_sec_cpu1(PPA_SERV_HAL_TEE_LOAD_SLAVE, 0, 0, + smc_cpu1_params); + if (ret) { + printf("TEE_LOAD_SLAVE Failed\n"); + return ret; + } + printf("TEE_LOAD_SLAVE Done\n"); + } + + tee_loaded = 1; + + return 0; +} |