feat(gpt): configure memory size protected by bitlock
This patch adds support in GPT library for configuration
of the memory block size protected by one bit of 'bitlock'
structure. Build option 'RME_GPT_BITLOCK_BLOCK' defines the
number of 512MB blocks covered by each bit. This numeric
parameter must be a power of 2 and can take the values from
0 to 512. Setting this value to 0 chooses a single spinlock
for all GPT L1 table entries. The default value is set to 1
which corresponds to 512MB per bit.
Change-Id: I710d178072894a3ef40daebea701f74d19e8a3d7
Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
diff --git a/lib/gpt_rme/gpt_rme.mk b/lib/gpt_rme/gpt_rme.mk
index 52b38d2..7d6b61f 100644
--- a/lib/gpt_rme/gpt_rme.mk
+++ b/lib/gpt_rme/gpt_rme.mk
@@ -4,6 +4,15 @@
# SPDX-License-Identifier: BSD-3-Clause
#
+# Process RME_GPT_BITLOCK_BLOCK value
+ifeq ($(filter 0 1 2 4 8 16 32 64 128 256 512, ${RME_GPT_BITLOCK_BLOCK}),)
+ $(error "Invalid value for RME_GPT_BITLOCK_BLOCK: ${RME_GPT_BITLOCK_BLOCK}")
+endif
+
+ifeq (${RME_GPT_BITLOCK_BLOCK},0)
+ $(warning "GPT library uses global spinlock")
+endif
+
# Process RME_GPT_MAX_BLOCK value
ifeq ($(filter 0 2 32 512, ${RME_GPT_MAX_BLOCK}),)
$(error "Invalid value for RME_GPT_MAX_BLOCK: ${RME_GPT_MAX_BLOCK}")