Fix boot failure on Raspberry Pi 4

dwhinham · Jan 3, 2021 · dbf49a2 · dbf49a2
1 parent 216130c
commit dbf49a2
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.8.1] - 2021-01-03
+
+### Fixed
+
+- Boot failure on Raspberry Pi 4 due to inability to allocate heap.
+
 ## [0.8.0] - 2021-01-03
 
 ### Added
@@ -221,7 +227,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial version.
 
-[unreleased]: https://github.com/dwhinham/mt32-pi/compare/v0.8.0...HEAD
+[unreleased]: https://github.com/dwhinham/mt32-pi/compare/v0.8.1...HEAD
+[0.8.1]: https://github.com/dwhinham/mt32-pi/compare/v0.8.0..v0.8.1
 [0.8.0]: https://github.com/dwhinham/mt32-pi/compare/v0.7.1..v0.8.0
 [0.7.1]: https://github.com/dwhinham/mt32-pi/compare/v0.7.0..v0.7.1
 [0.7.0]: https://github.com/dwhinham/mt32-pi/compare/v0.6.2..v0.7.0

diff --git a/src/zoneallocator.cpp b/src/zoneallocator.cpp
@@ -54,7 +54,7 @@ bool CZoneAllocator::Initialize()
 
 #if RASPPI >= 4
 	// Allocate all of the remaining HIGH region
-	m_nHeapSize = CMemorySystem::Get()->GetHeapFreeSpace(HEAP_HIGH);
+	m_nHeapSize = CMemorySystem::Get()->GetHeapFreeSpace(HEAP_HIGH) - sizeof(THeapBlockHeader);
 	m_pHeap     = CMemorySystem::Get()->HeapAllocate(m_nHeapSize, HEAP_HIGH);
 #else
 	// Allocate the majority of the remaining LOW region