+// SPDX-License-Identifier: GPL-2.0+
/*
*
* Common security related functions for OMAP devices
*
- * (C) Copyright 2016
+ * (C) Copyright 2016-2017
* Texas Instruments, <www.ti.com>
*
* Daniel Allred <d-allred@ti.com>
* Andreas Dannenberg <dannenberg@ti.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
+ * Harinarayan Bhatta <harinarayan@ti.com>
+ * Andrew F. Davis <afd@ti.com>
*/
#include <common.h>
+#include <command.h>
+#include <cpu_func.h>
+#include <hang.h>
+#include <init.h>
+#include <log.h>
#include <stdarg.h>
#include <asm/arch/sys_proto.h>
+#include <asm/cache.h>
#include <asm/omap_common.h>
#include <asm/omap_sec_common.h>
#include <asm/spl.h>
+#include <asm/ti-common/sys_proto.h>
+#include <mapmem.h>
#include <spl.h>
+#include <tee/optee.h>
/* Index for signature verify ROM API */
#ifdef CONFIG_AM33XX
#define API_HAL_KM_VERIFYCERTIFICATESIGNATURE_INDEX (0x0000000E)
#endif
-static uint32_t secure_rom_call_args[5] __aligned(ARCH_DMA_MINALIGN);
+/* 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)
+
+/* Offset of header size if image is signed as ISW */
+#define HEADER_SIZE_OFFSET (0x6D)
+
+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 uint32_t secure_rom_call_args[5] __aligned(ARCH_DMA_MINALIGN) __section(".data");
u32 secure_rom_call(u32 service, u32 proc_id, u32 flag, ...)
{
num_args = va_arg(ap, u32);
- if (num_args > 4)
+ if (num_args > 4) {
+ va_end(ap);
return 1;
+ }
/* Copy args to aligned args structure */
for (i = 0; i < num_args; i++)
/* Perform cache writeback on input buffer */
flush_dcache_range(
- (u32)*image,
- (u32)*image + roundup(*size, ARCH_DMA_MINALIGN));
+ rounddown((u32)*image, ARCH_DMA_MINALIGN),
+ roundup((u32)*image + *size, ARCH_DMA_MINALIGN));
cert_addr = (uint32_t)*image;
sig_addr = find_sig_start((char *)*image, *size);
}
*size = sig_addr - cert_addr; /* Subtract out the signature size */
+ /* Subtract header if present */
+ if (strncmp((char *)sig_addr, "CERT_ISW_", 9) == 0)
+ *size -= ((u32 *)*image)[HEADER_SIZE_OFFSET];
cert_size = *size;
/* Check if image load address is 32-bit aligned */
/* Perform cache writeback on output buffer */
flush_dcache_range(
- (u32)*image,
- (u32)*image + roundup(*size, ARCH_DMA_MINALIGN));
+ rounddown((u32)*image, ARCH_DMA_MINALIGN),
+ roundup((u32)*image + *size, ARCH_DMA_MINALIGN));
auth_exit:
if (result != 0) {
}
/*
- * Output notification of successful authentication as well the name of
- * the signing certificate used to re-assure the user that the secure
- * code is being processed as expected. However suppress any such log
- * output in case of building for SPL and booting via YMODEM. This is
- * done to avoid disturbing the YMODEM serial protocol transactions.
+ * Output notification of successful authentication to re-assure the
+ * user that the secure code is being processed as expected. However
+ * suppress any such log output in case of building for SPL and booting
+ * via YMODEM. This is done to avoid disturbing the YMODEM serial
+ * protocol transactions.
*/
if (!(IS_ENABLED(CONFIG_SPL_BUILD) &&
IS_ENABLED(CONFIG_SPL_YMODEM_SUPPORT) &&
spl_boot_device() == BOOT_DEVICE_UART))
- printf("Authentication passed: %s\n", (char *)sig_addr);
+ printf("Authentication passed\n");
return result;
}
+
+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 + (
+#if defined(CONFIG_OMAP54XX)
+ omap_sdram_size()
+#else
+ get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
+ CONFIG_MAX_RAM_BANK_SIZE)
+#endif
+ - 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 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) ||
+ (tee_file_size > size)) {
+ printf("Error in TEE header. Check firewall and TEE 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 !CONFIG_IS_ENABLED(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 defined(CONFIG_OMAP54XX)
+ if (!is_dra72x()) {
+ u32 *smc_cpu1_params;
+ /* Reuse the tee_info buffer for SMC params */
+ smc_cpu1_params = (u32 *)&tee_info;
+ smc_cpu1_params[0] = 0;
+#if !CONFIG_IS_ENABLED(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");
+ }
+#endif
+
+ tee_loaded = 1;
+
+ return 0;
+}
projects / oweals / u-boot.git / blobdiff