feat(arm): move GPT setup to common BL source
As of now, GPT setup is being handled from BL2 for plat/arm platforms.
However, for platforms having a separate entity to load firmware images,
it is possible for BL31 to setup the GPT. In order to address this
concern, move the GPT setup implementation from arm_bl2_setup.c file to
arm_common.c. Additionally, rename the API from arm_bl2_gpt_setup to
arm_gpt_setup to make it boot stage agnostic.
Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Change-Id: I35d17a179c8746945c69db37fd23d763a7774ddc
diff --git a/plat/arm/common/arm_common.c b/plat/arm/common/arm_common.c
index fc68114..21cc39c 100644
--- a/plat/arm/common/arm_common.c
+++ b/plat/arm/common/arm_common.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2024, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -241,3 +241,43 @@
{
return plat_arm_mmap;
}
+
+#if ENABLE_RME
+void arm_gpt_setup(void)
+{
+ /*
+ * It is to be noted that any Arm platform that reuses arm_gpt_setup
+ * must implement plat_arm_get_gpt_info within its platform code
+ */
+ const arm_gpt_info_t *arm_gpt_info =
+ plat_arm_get_gpt_info();
+
+ if (arm_gpt_info == NULL) {
+ ERROR("arm_gpt_info not initialized!!\n");
+ panic();
+ }
+
+ /* Initialize entire protected space to GPT_GPI_ANY. */
+ if (gpt_init_l0_tables(arm_gpt_info->pps, arm_gpt_info->l0_base,
+ arm_gpt_info->l0_size) < 0) {
+ ERROR("gpt_init_l0_tables() failed!\n");
+ panic();
+ }
+
+ /* Carve out defined PAS ranges. */
+ if (gpt_init_pas_l1_tables(arm_gpt_info->pgs,
+ arm_gpt_info->l1_base,
+ arm_gpt_info->l1_size,
+ arm_gpt_info->pas_region_base,
+ arm_gpt_info->pas_region_count) < 0) {
+ ERROR("gpt_init_pas_l1_tables() failed!\n");
+ panic();
+ }
+
+ INFO("Enabling Granule Protection Checks\n");
+ if (gpt_enable() < 0) {
+ ERROR("gpt_enable() failed!\n");
+ panic();
+ }
+}
+#endif /* ENABLE_RME */