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Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/sec-common.c')
-rw-r--r--arch/arm/cpu/armv7/omap-common/sec-common.c139
1 files changed, 0 insertions, 139 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/sec-common.c b/arch/arm/cpu/armv7/omap-common/sec-common.c
deleted file mode 100644
index 246a239..0000000
--- a/arch/arm/cpu/armv7/omap-common/sec-common.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- *
- * Common security related functions for OMAP devices
- *
- * (C) Copyright 2016
- * Texas Instruments, <www.ti.com>
- *
- * Daniel Allred <d-allred@ti.com>
- * Andreas Dannenberg <dannenberg@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>
-
-/* Index for signature verify ROM API */
-#define API_HAL_KM_VERIFYCERTIFICATESIGNATURE_INDEX (0x0000000E)
-
-static uint32_t secure_rom_call_args[5] __aligned(ARCH_DMA_MINALIGN);
-
-u32 secure_rom_call(u32 service, u32 proc_id, u32 flag, ...)
-{
- int i;
- u32 num_args;
- va_list ap;
-
- va_start(ap, flag);
-
- num_args = va_arg(ap, u32);
-
- if (num_args > 4)
- return 1;
-
- /* Copy args to aligned args structure */
- for (i = 0; i < num_args; i++)
- secure_rom_call_args[i + 1] = va_arg(ap, u32);
-
- secure_rom_call_args[0] = num_args;
-
- va_end(ap);
-
- /* if data cache is enabled, flush the aligned args structure */
- flush_dcache_range(
- (unsigned int)&secure_rom_call_args[0],
- (unsigned int)&secure_rom_call_args[0] +
- roundup(sizeof(secure_rom_call_args), ARCH_DMA_MINALIGN));
-
- return omap_smc_sec(service, proc_id, flag, secure_rom_call_args);
-}
-
-static u32 find_sig_start(char *image, size_t size)
-{
- char *image_end = image + size;
- char *sig_start_magic = "CERT_";
- int magic_str_len = strlen(sig_start_magic);
- char *ch;
-
- while (--image_end > image) {
- if (*image_end == '_') {
- ch = image_end - magic_str_len + 1;
- if (!strncmp(ch, sig_start_magic, magic_str_len))
- return (u32)ch;
- }
- }
- return 0;
-}
-
-int secure_boot_verify_image(void **image, size_t *size)
-{
- int result = 1;
- u32 cert_addr, sig_addr;
- size_t cert_size;
-
- /* Perform cache writeback on input buffer */
- flush_dcache_range(
- (u32)*image,
- (u32)*image + roundup(*size, ARCH_DMA_MINALIGN));
-
- cert_addr = (uint32_t)*image;
- sig_addr = find_sig_start((char *)*image, *size);
-
- if (sig_addr == 0) {
- printf("No signature found in image!\n");
- result = 1;
- goto auth_exit;
- }
-
- *size = sig_addr - cert_addr; /* Subtract out the signature size */
- cert_size = *size;
-
- /* Check if image load address is 32-bit aligned */
- if (!IS_ALIGNED(cert_addr, 4)) {
- printf("Image is not 4-byte aligned!\n");
- result = 1;
- goto auth_exit;
- }
-
- /* Image size also should be multiple of 4 */
- if (!IS_ALIGNED(cert_size, 4)) {
- printf("Image size is not 4-byte aligned!\n");
- result = 1;
- goto auth_exit;
- }
-
- /* Call ROM HAL API to verify certificate signature */
- debug("%s: load_addr = %x, size = %x, sig_addr = %x\n", __func__,
- cert_addr, cert_size, sig_addr);
-
- result = secure_rom_call(
- API_HAL_KM_VERIFYCERTIFICATESIGNATURE_INDEX, 0, 0,
- 4, cert_addr, cert_size, sig_addr, 0xFFFFFFFF);
-auth_exit:
- if (result != 0) {
- printf("Authentication failed!\n");
- printf("Return Value = %08X\n", result);
- hang();
- }
-
- /*
- * 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.
- */
- 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);
-
- return result;
-}