ppc4xx: Remove superfluous dram_init() call or replace it by initdram()

Historically the 405 U-Boot port had a dram_init() call in early init
stage. This function was still called from start.S and most of the time
coded in assembler. This is not needed anymore (since a long time) and
boards should implement the common initdram() function in C instead.

This patch now removed the dram_init() call from start.S and removes the
empty implementations that are scattered through most of the 405 board
ports. Some older board ports really implement this dram_init() though.
These are:

csb272
csb472
ERIC
EXBITGEN
W7OLMC
W7OLMG

I changed those boards to call this assembler dram_init() function now
from their board specific initdram() instead. This *should* work, but please
test again on those platforms. And it is perhaps a good idea that those
boards use some common 405 SDRAM initialization code from cpu/ppc4xx at
some time. So further patches welcome here.

Signed-off-by: Stefan Roese <sr@denx.de>

3 files changed, 2 insertions, 42 deletions

diff --git a/board/netstal/hcu4/hcu4.c b/board/netstal/hcu4/hcu4.c
index dc526fcd7aa..42c7c16cdf0 100644
--- a/board/netstal/hcu4/hcu4.c
+++ b/board/netstal/hcu4/hcu4.c
@@ -121,15 +121,6 @@ void hcu_led_set(u32 value)
 }
 
 /*
- * sdram_init - Dummy implementation for start.S, spd_sdram  or initdram
- *		used for HCUx
- */
-void sdram_init(void)
-{
-	return;
-}
-
-/*
  * hcu_get_slot
  */
 u32 hcu_get_slot(void)
diff --git a/board/netstal/hcu5/sdram.c b/board/netstal/hcu5/sdram.c
index 6b1b53a4d05..d8817b831af 100644
--- a/board/netstal/hcu5/sdram.c
+++ b/board/netstal/hcu5/sdram.c
@@ -40,28 +40,6 @@
 void hcu_led_set(u32 value);
 void dcbz_area(u32 start_address, u32 num_bytes);
 
-#define DDR_DCR_BASE 0x10
-#define ddrcfga  (DDR_DCR_BASE+0x0)   /* DDR configuration address reg */
-#define ddrcfgd  (DDR_DCR_BASE+0x1)   /* DDR configuration data reg    */
-
-#define DDR0_01_INT_MASK_MASK             0x000000FF
-#define DDR0_00_INT_ACK_ALL               0x7F000000
-#define DDR0_01_INT_MASK_ALL_ON           0x000000FF
-#define DDR0_01_INT_MASK_ALL_OFF          0x00000000
-
-#define DDR0_17_DLLLOCKREG_MASK           0x00010000 /* Read only */
-#define DDR0_17_DLLLOCKREG_UNLOCKED       0x00000000
-#define DDR0_17_DLLLOCKREG_LOCKED         0x00010000
-
-#define DDR0_22                         0x16
-/* ECC */
-#define DDR0_22_CTRL_RAW_MASK             0x03000000
-#define DDR0_22_CTRL_RAW_ECC_DISABLE      0x00000000 /* ECC not enabled */
-#define DDR0_22_CTRL_RAW_ECC_CHECK_ONLY   0x01000000 /* ECC no correction */
-#define DDR0_22_CTRL_RAW_NO_ECC_RAM       0x02000000 /* Not a ECC RAM*/
-#define DDR0_22_CTRL_RAW_ECC_ENABLE       0x03000000 /* ECC correcting on */
-#define DDR0_03_CASLAT_DECODE(n)            ((((unsigned long)(n))>>16)&0x7)
-
 #define ECC_RAM				0x03267F0B
 #define NO_ECC_RAM			0x00267F0B
 
@@ -111,11 +89,11 @@ static int wait_for_dlllock(void)
 	/* -----------------------------------------------------------+
 	 * Wait for the DCC master delay line to finish calibration
 	 * ----------------------------------------------------------*/
-	mtdcr(ddrcfga, DDR0_17);
+	mtdcr(memcfga, DDR0_17);
 	val = DDR0_17_DLLLOCKREG_UNLOCKED;
 
 	while (wait != 0xffff) {
-		val = mfdcr(ddrcfgd);
+		val = mfdcr(memcfgd);
 		if ((val & DDR0_17_DLLLOCKREG_MASK) ==
 		    DDR0_17_DLLLOCKREG_LOCKED)
 			/* dlllockreg bit on */
diff --git a/board/netstal/mcu25/mcu25.c b/board/netstal/mcu25/mcu25.c
index 2b21444e2d2..07891f6785a 100644
--- a/board/netstal/mcu25/mcu25.c
+++ b/board/netstal/mcu25/mcu25.c
@@ -128,15 +128,6 @@ void hcu_led_set(u32 value)
 }
 
 /*
- * sdram_init - Dummy implementation for start.S, spd_sdram  or initdram
- *		used for HCUx
- */
-void sdram_init(void)
-{
-	return;
-}
-
-/*
  * hcu_get_slot
  */
 u32 hcu_get_slot(void)