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>

1 files changed, 0 insertions, 16 deletions

diff --git a/board/amcc/walnut/walnut.c b/board/amcc/walnut/walnut.c
index 292e02609e2..641987e871c 100644
--- a/board/amcc/walnut/walnut.c
+++ b/board/amcc/walnut/walnut.c
@@ -86,14 +86,6 @@ int checkboard(void)
 }
 
 /*
- * sdram_init - Dummy implementation for start.S, spd_sdram used on this board!
- */
-void sdram_init(void)
-{
-	return;
-}
-
-/*
  * initdram(int board_type) reads EEPROM via I2c. EEPROM contains all of
  * the necessary info for SDRAM controller configuration
  */
@@ -101,11 +93,3 @@ long int initdram(int board_type)
 {
 	return spd_sdram();
 }
-
-int testdram(void)
-{
-	/* TODO: XXX XXX XXX */
-	printf("test: xxx MB - ok\n");
-
-	return (0);
-}