feat(gpt): statically allocate bitlocks array
Statically allocate 'gpt_bitlock' array of fine-grained
'bitlock_t' data structures in arm_bl31_setup.c.
The amount of memory needed for this array is controlled
by 'RME_GPT_BITLOCK_BLOCK' build option and 'PLAT_ARM_PPS'
macro defined in platform_def.h which specifies the size
of protected physical address space in bytes.
'PLAT_ARM_PPS' takes values from 4GB to 4PB supported by
Arm architecture.
Change-Id: Icf620b5039e45df6828d58fca089cad83b0bc669
Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
diff --git a/include/lib/gpt_rme/gpt_rme.h b/include/lib/gpt_rme/gpt_rme.h
index 94a88b0..135a948 100644
--- a/include/lib/gpt_rme/gpt_rme.h
+++ b/include/lib/gpt_rme/gpt_rme.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2022, Arm Limited. All rights reserved.
+ * Copyright (c) 2022-2025, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -8,13 +8,20 @@
#define GPT_RME_H
#include <stdint.h>
-
-#include <arch.h>
+#include <lib/spinlock.h>
/******************************************************************************/
/* GPT helper macros and definitions */
/******************************************************************************/
+#if (RME_GPT_BITLOCK_BLOCK != 0)
+#define LOCK_SIZE sizeof(((bitlock_t *)NULL)->lock)
+#define LOCK_TYPE typeof(((bitlock_t *)NULL)->lock)
+#define LOCK_BITS (LOCK_SIZE * UL(8))
+
+CASSERT((UL(1) == LOCK_SIZE), assert_bitlock_type_not_uint8_t);
+#endif /* RME_GPT_BITLOCK_BLOCK */
+
/*
* Structure for specifying a mapping range and it's properties. This should not
* be manually initialized, using the MAP_GPT_REGION_x macros is recommended as
@@ -238,10 +245,14 @@
* initialization from a previous stage. Granule protection checks must be
* enabled already or this function will return an error.
*
+ * Parameters
+ * l1_bitlocks_base Base address of memory for L1 tables bitlocks.
+ * l1_bitlocks_size Total size of memory available for L1 tables bitlocks.
+ *
* Return
* Negative Linux error code in the event of a failure, 0 for success.
*/
-int gpt_runtime_init(void);
+int gpt_runtime_init(uintptr_t l1_bitlocks_base, size_t l1_bitlocks_size);
/*
* Public API to enable granule protection checks once the tables have all been