SPDX: Convert all of our single license tags to Linux Kernel style

[u-boot] / arch / arm / mach-omap2 / sec-common.c

diff --git a/arch/arm/mach-omap2/sec-common.c b/arch/arm/mach-omap2/sec-common.c
index f230c9ea4e316f10bdd0bcdfc4a484c74ac6e197..600a31280c7af631f3b9aa2590232edf63159e46 100644 (file)
--- a/arch/arm/mach-omap2/sec-common.c
+++ b/arch/arm/mach-omap2/sec-common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  *
  * Common security related functions for OMAP devices
@@ -9,8 +10,6 @@
  * Andreas Dannenberg <dannenberg@ti.com>
  * Harinarayan Bhatta <harinarayan@ti.com>
  * Andrew F. Davis <afd@ti.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
  */
 
 #include <common.h>
@@ -41,6 +40,9 @@
 #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 */
@@ -53,7 +55,7 @@ struct ppa_tee_load_info {
        u32 tee_arg0;          /* argument to TEE jump function, in r0 */
 };
 
-static uint32_t secure_rom_call_args[5] __aligned(ARCH_DMA_MINALIGN);
+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, ...)
 {
@@ -112,8 +114,8 @@ int secure_boot_verify_image(void **image, size_t *size)
 
        /* 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);
@@ -125,6 +127,9 @@ int secure_boot_verify_image(void **image, size_t *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 */
@@ -151,8 +156,8 @@ int secure_boot_verify_image(void **image, size_t *size)
 
        /* 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) {
@@ -162,21 +167,21 @@ auth_exit:
        }
 
        /*
-        * 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;
 }
 
-static u32 get_sec_mem_start(void)
+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;
@@ -305,12 +310,8 @@ int secure_tee_install(u32 addr)
 
        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");
+           (tee_file_size > size)) {
+               printf("Error in TEE header. Check firewall and TEE sizes\n");
                unmap_sysmem(hdr);
                return CMD_RET_FAILURE;
        }