We now have the range of free memory, let's initialize the physical
allocator. It is now possible to use alloc_page()/alloc_pages().
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
lib/s390x/sclp.c | 12 ++++++++++++
s390x/Makefile | 3 +++
2 files changed, 15 insertions(+)
diff --git a/lib/s390x/sclp.c b/lib/s390x/sclp.c
index 199405c..c7471b1 100644
--- a/lib/s390x/sclp.c
+++ b/lib/s390x/sclp.c
@@ -15,11 +15,21 @@
#include <asm/arch_def.h>
#include <asm/interrupt.h>
#include "sclp.h"
+#include <alloc_phys.h>
+
+extern unsigned long stacktop;
static uint64_t storage_increment_size;
static uint64_t max_ram_size;
static uint64_t ram_size;
+static void mem_init(phys_addr_t mem_end)
+{
+ phys_addr_t freemem_start = (phys_addr_t)&stacktop & PAGE_MASK;
+
+ phys_alloc_init(freemem_start, mem_end - freemem_start);
+}
+
void sclp_memory_setup(void)
{
ReadInfo *ri = (void *)_sccb;
@@ -55,4 +65,6 @@ void sclp_memory_setup(void)
break;
ram_size += storage_increment_size;
}
+
+ mem_init(ram_size);
}
diff --git a/s390x/Makefile b/s390x/Makefile
index ce63dd1..4198fdc 100644
--- a/s390x/Makefile
+++ b/s390x/Makefile
@@ -21,6 +21,9 @@ asm-offsets = lib/$(ARCH)/asm-offsets.h
include $(SRCDIR)/scripts/asm-offsets.mak
cflatobjs += lib/util.o
+cflatobjs += lib/alloc.o
+cflatobjs += lib/alloc_phys.o
+cflatobjs += lib/alloc_page.o
cflatobjs += lib/alloc_phys.o
cflatobjs += lib/s390x/io.o
cflatobjs += lib/s390x/stack.o
--
2.14.3
