board: arbel: Limit the dram effective size to bank0 maximal size
For 4GB dram size, the dram is divided into 2 banks and
the address space of these 2 banks are not concatenated.
Limit the gd->ram_top to not exceed bank0 top to prevent
accessing invalid memory region.
Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
diff --git a/board/nuvoton/arbel_evb/arbel_evb.c b/board/nuvoton/arbel_evb/arbel_evb.c
index 8fc56c1..53c931c 100644
--- a/board/nuvoton/arbel_evb/arbel_evb.c
+++ b/board/nuvoton/arbel_evb/arbel_evb.c
@@ -27,6 +27,15 @@
return 0;
}
+phys_size_t get_effective_memsize(void)
+{
+ /* Use bank0 only */
+ if (gd->ram_size > DRAM_2GB_SIZE)
+ return DRAM_2GB_SIZE;
+
+ return gd->ram_size;
+}
+
int dram_init(void)
{
struct npcm_gcr *gcr = (struct npcm_gcr *)NPCM_GCR_BA;
@@ -70,21 +79,16 @@
gd->bd->bi_dram[1].start = DRAM_4GB_SIZE;
gd->bd->bi_dram[1].size = DRAM_2GB_SIZE -
(DRAM_4GB_SIZE - DRAM_4GB_ECC_SIZE);
- /* use bank0 only */
- gd->ram_size = DRAM_2GB_SIZE;
break;
case DRAM_4GB_SIZE:
gd->bd->bi_dram[0].size = DRAM_2GB_SIZE;
gd->bd->bi_dram[1].start = DRAM_4GB_SIZE;
gd->bd->bi_dram[1].size = DRAM_2GB_SIZE;
- /* use bank0 only */
- gd->ram_size = DRAM_2GB_SIZE;
break;
default:
gd->bd->bi_dram[0].size = DRAM_1GB_SIZE;
gd->bd->bi_dram[1].start = 0;
gd->bd->bi_dram[1].size = 0;
- gd->ram_size = DRAM_1GB_SIZE;
break;
}