m53menlo: Switch to deriving CONFIG_SYS_NAND_PAGE_COUNT

[platform/kernel/u-boot.git] / common / dlmalloc.c

diff --git a/common/dlmalloc.c b/common/dlmalloc.c
index db5ab55..11729e8 100644 (file)
--- a/common/dlmalloc.c
+++ b/common/dlmalloc.c
@@ -1,4 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * This code is based on a version (aka dlmalloc) of malloc/free/realloc written
+ * by Doug Lea and released to the public domain, as explained at
+ * http://creativecommons.org/publicdomain/zero/1.0/-
+ *
+ * The original code is available at http://gee.cs.oswego.edu/pub/misc/
+ * as file malloc-2.6.6.c.
+ */
+
 #include <common.h>
+#include <log.h>
+#include <asm/global_data.h>
 
 #if CONFIG_IS_ENABLED(UNIT_TEST)
 #define DEBUG
@@ -280,6 +292,7 @@ nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
            |             Unused space (may be 0 bytes long)                .
            .                                                               .
            .                                                               |
+
 nextchunk-> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     `foot:' |             Size of chunk, in bytes                           |
            +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
@@ -574,6 +587,10 @@ static void malloc_bin_reloc(void)
 static inline void malloc_bin_reloc(void) {}
 #endif
 
+#ifdef CONFIG_SYS_MALLOC_DEFAULT_TO_INIT
+static void malloc_init(void);
+#endif
+
 ulong mem_malloc_start = 0;
 ulong mem_malloc_end = 0;
 ulong mem_malloc_brk = 0;
@@ -604,6 +621,10 @@ void mem_malloc_init(ulong start, ulong size)
        mem_malloc_end = start + size;
        mem_malloc_brk = start;
 
+#ifdef CONFIG_SYS_MALLOC_DEFAULT_TO_INIT
+       malloc_init();
+#endif
+
        debug("using memory %#lx-%#lx for malloc()\n", mem_malloc_start,
              mem_malloc_end);
 #ifdef CONFIG_SYS_MALLOC_CLEAR_ON_INIT
@@ -708,7 +729,36 @@ static unsigned int max_n_mmaps = 0;
 static unsigned long max_mmapped_mem = 0;
 #endif
 
+#ifdef CONFIG_SYS_MALLOC_DEFAULT_TO_INIT
+static void malloc_init(void)
+{
+       int i, j;
+
+       debug("bins (av_ array) are at %p\n", (void *)av_);
+
+       av_[0] = NULL; av_[1] = NULL;
+       for (i = 2, j = 2; i < NAV * 2 + 2; i += 2, j++) {
+               av_[i] = bin_at(j - 2);
+               av_[i + 1] = bin_at(j - 2);
+
+               /* Just print the first few bins so that
+                * we can see there are alright.
+                */
+               if (i < 10)
+                       debug("av_[%d]=%lx av_[%d]=%lx\n",
+                             i, (ulong)av_[i],
+                             i + 1, (ulong)av_[i + 1]);
+       }
 
+       /* Init the static bookkeeping as well */
+       sbrk_base = (char *)(-1);
+       max_sbrked_mem = 0;
+       max_total_mem = 0;
+#ifdef DEBUG
+       memset((void *)&current_mallinfo, 0, sizeof(struct mallinfo));
+#endif
+}
+#endif
 
 /*
   Debugging support
@@ -1051,9 +1101,6 @@ static mchunkptr mremap_chunk(p, new_size) mchunkptr p; size_t new_size;
 
 #endif /* HAVE_MMAP */
 
-
-
-
 /*
   Extend the top-most chunk by obtaining memory from system.
   Main interface to sbrk (but see also malloc_trim).