TEE loading and firewall setup are common to all omap2 devices, move these function out of omap5 and into mach-omap2. This allows us to use these functions from other omap class devices. Signed-off-by: Andrew F. Davis <afd@ti.com>master
Andrew F. Davis
8 years ago
committed by
Tom Rini
parent
0d982c5853
commit
3348e0c0a6
@ -1,234 +0,0 @@ |
||||
/*
|
||||
* |
||||
* Security related functions for OMAP5 class devices |
||||
* |
||||
* (C) Copyright 2016 |
||||
* Texas Instruments, <www.ti.com> |
||||
* |
||||
* Daniel Allred <d-allred@ti.com> |
||||
* Harinarayan Bhatta <harinarayan@ti.com> |
||||
* |
||||
* SPDX-License-Identifier: GPL-2.0+ |
||||
*/ |
||||
|
||||
#include <common.h> |
||||
#include <stdarg.h> |
||||
|
||||
#include <asm/arch/sys_proto.h> |
||||
#include <asm/omap_common.h> |
||||
#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; |
||||
u32 sec_mem_size = CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE; |
||||
/*
|
||||
* Total reserved region is all contiguous with protected |
||||
* region coming first, followed by the non-secure region. |
||||
* If 0x0 start address is given, we simply put the reserved |
||||
* region at the end of the external DRAM. |
||||
*/ |
||||
if (sec_mem_start == 0) |
||||
sec_mem_start = |
||||
(CONFIG_SYS_SDRAM_BASE + |
||||
(omap_sdram_size() - sec_mem_size)); |
||||
return sec_mem_start; |
||||
} |
||||
|
||||
int secure_emif_firewall_setup(uint8_t region_num, uint32_t start_addr, |
||||
uint32_t size, uint32_t access_perm, |
||||
uint32_t initiator_perm) |
||||
{ |
||||
int result = 1; |
||||
|
||||
/*
|
||||
* Call PPA HAL API to do any other general firewall |
||||
* configuration for regions 1-6 of the EMIF firewall. |
||||
*/ |
||||
debug("%s: regionNum = %x, startAddr = %x, size = %x", __func__, |
||||
region_num, start_addr, size); |
||||
|
||||
result = secure_rom_call( |
||||
PPA_SERV_HAL_SETUP_EMIF_FW_REGION, 0, 0, 4, |
||||
(start_addr & 0xFFFFFFF0) | (region_num & 0x0F), |
||||
size, access_perm, initiator_perm); |
||||
|
||||
if (result != 0) { |
||||
puts("Secure EMIF Firewall Setup failed!\n"); |
||||
debug("Return Value = %x\n", result); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
#if (CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE < \ |
||||
CONFIG_TI_SECURE_EMIF_PROTECTED_REGION_SIZE) |
||||
#error "TI Secure EMIF: Protected size cannot be larger than total size." |
||||
#endif |
||||
int secure_emif_reserve(void) |
||||
{ |
||||
int result = 1; |
||||
u32 sec_mem_start = get_sec_mem_start(); |
||||
u32 sec_prot_size = CONFIG_TI_SECURE_EMIF_PROTECTED_REGION_SIZE; |
||||
|
||||
/* If there is no protected region, there is no reservation to make */ |
||||
if (sec_prot_size == 0) |
||||
return 0; |
||||
|
||||
/*
|
||||
* Call PPA HAL API to reserve a chunk of EMIF SDRAM |
||||
* for secure world use. This region should be carved out |
||||
* from use by any public code. EMIF firewall region 7 |
||||
* will be used to protect this block of memory. |
||||
*/ |
||||
result = secure_rom_call( |
||||
PPA_SERV_HAL_SETUP_SEC_RESVD_REGION, |
||||
0, 0, 2, sec_mem_start, sec_prot_size); |
||||
|
||||
if (result != 0) { |
||||
puts("SDRAM Firewall: Secure memory reservation failed!\n"); |
||||
debug("Return Value = %x\n", result); |
||||
} |
||||
|
||||
return result; |
||||
} |
||||
|
||||
int secure_emif_firewall_lock(void) |
||||
{ |
||||
int result = 1; |
||||
|
||||
/*
|
||||
* Call PPA HAL API to lock the EMIF firewall configurations. |
||||
* After this API is called, none of the PPA HAL APIs for |
||||
* configuring the EMIF firewalls will be usable again (that |
||||
* is, calls to those APIs will return failure and have no |
||||
* effect). |
||||
*/ |
||||
|
||||
result = secure_rom_call( |
||||
PPA_SERV_HAL_LOCK_EMIF_FW, |
||||
0, 0, 0); |
||||
|
||||
if (result != 0) { |
||||
puts("Secure EMIF Firewall Lock failed!\n"); |
||||
debug("Return Value = %x\n", result); |
||||
} |
||||
|
||||
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; |
||||
} |
||||
Loading…
Reference in new issue