[U-Boot] [PATCH 5/6] spl: support using full malloc with SYS_MALLOC_F_LEN

[Simon Goldschmidt]

Some platforms (like socfpga A10) need a big hep before SDRAM is available
(e.g. because FAT is used). For such platforms, simple_malloc is often not
a good option as it does not support freeing memory. These platforms often
use the non-Kconfig defines CONFIG_SYS_SPL_MALLOC_START (and its SIZE).

This patch allows enabling CONFIG_SPL_SYS_MALLOC_F_LEN while leaving
CONFIG_SPL_SYS_MALLOC_SIMPLE disabled. In this case, the full malloc heap
is made available as early as the simple_malloc heap would be normally.

This way, platforms can drop the non-Kconfig options to set up the full
heap and rely on the same automatically calculated heap allocation used
for simple heap.

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt at gmail.com>
---

 common/spl/spl.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/common/spl/spl.c b/common/spl/spl.c
index 88d4b8a9bf..b89340eb27 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -383,8 +383,13 @@ static int spl_common_init(bool setup_malloc)
 #ifdef CONFIG_MALLOC_F_ADDR
 		gd->malloc_base = CONFIG_MALLOC_F_ADDR;
 #endif
+#if CONFIG_IS_ENABLED(SYS_MALLOC_SIMPLE)
 		gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN);
 		gd->malloc_ptr = 0;
+#else
+		mem_malloc_init(gd->malloc_base, CONFIG_VAL(SYS_MALLOC_F_LEN));
+		gd->flags |= GD_FLG_FULL_MALLOC_INIT;
+#endif
 	}
 #endif
 	ret = bootstage_init(true);
-- 
2.17.1