1 files changed, 225 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/sec-common.c b/arch/arm/mach-omap2/sec-common.c
index ec1ffa5..f230c9e 100644
--- a/arch/arm/mach-omap2/sec-common.c
+++ b/arch/arm/mach-omap2/sec-common.c
@@ -2,11 +2,13 @@
  *
  * 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>
+ * Harinarayan Bhatta <harinarayan@ti.com>
+ * Andrew F. Davis <afd@ti.com>
  *
  * SPDX-License-Identifier: GPL-2.0+
  */
@@ -15,10 +17,14 @@
 #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
@@ -27,6 +33,26 @@
 #define API_HAL_KM_VERIFYCERTIFICATESIGNATURE_INDEX	(0x0000000E)
 #endif
 
+/* 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 uint32_t secure_rom_call_args[5] __aligned(ARCH_DMA_MINALIGN);
 
 u32 secure_rom_call(u32 service, u32 proc_id, u32 flag, ...)
@@ -149,3 +175,201 @@ auth_exit:
 
 	return result;
 }
+
+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 + (
+#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) ||
+	    (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 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 !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");
+	}
+#endif
+
+	tee_loaded = 1;
+
+	return 0;
+}