1 files changed, 5 insertions, 3 deletions
diff --git a/firmware/target/arm/as3525/system-as3525.c b/firmware/target/arm/as3525/system-as3525.c
index 60fe7032e6..ecb9736f78 100644
--- a/firmware/target/arm/as3525/system-as3525.c
+++ b/firmware/target/arm/as3525/system-as3525.c
@@ -209,9 +209,11 @@ static void sdram_init(void)
    MPMC_DYNAMIC_CONTROL = 0x82; /* SDRAM MODE, MPMCCLKOUT runs continuously */
-    /* this part is required, if you know why please explain */
+    /* program the SDRAM mode register */
-    unsigned int tmp = *(volatile unsigned int*)(0x30000000+0x2300*MEM);
+    /* FIXME: details the exact settings of mode register */
-    (void)tmp; /* we just need to read from this location */
+    asm volatile(
+        "ldr r4, [%0]\n"
+        : : "p"(0x30000000+0x2300*MEM) : "r4");
    MPMC_DYNAMIC_CONTROL = 0x2; /* SDRAM NORMAL, MPMCCLKOUT runs continuously */

diff --git a/firmware/target/arm/as3525/system-as3525.c b/firmware/target/arm/as3525/system-as3525.c index 60fe7032e6..ecb9736f78 100644 --- a/firmware/target/arm/as3525/system-as3525.c +++ b/firmware/target/arm/as3525/system-as3525.c
@@ -209,9 +209,11 @@ static void sdram_init(void)
209		209
210	MPMC_DYNAMIC_CONTROL = 0x82; /* SDRAM MODE, MPMCCLKOUT runs continuously */	210	MPMC_DYNAMIC_CONTROL = 0x82; /* SDRAM MODE, MPMCCLKOUT runs continuously */
211		211
212	/* this part is required, if you know why please explain */	212	/* program the SDRAM mode register */
213	unsigned int tmp = (volatile unsigned int)(0x30000000+0x2300*MEM);	213	/* FIXME: details the exact settings of mode register */
214	(void)tmp; /* we just need to read from this location */	214	asm volatile(
		215	"ldr r4, [%0]\n"
		216	: : "p"(0x30000000+0x2300*MEM) : "r4");
215		217
216	MPMC_DYNAMIC_CONTROL = 0x2; /* SDRAM NORMAL, MPMCCLKOUT runs continuously */	218	MPMC_DYNAMIC_CONTROL = 0x2; /* SDRAM NORMAL, MPMCCLKOUT runs continuously */
217		219