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authorStefan Roese <sr@denx.de>2008-06-02 17:37:28 +0200
committerStefan Roese <sr@denx.de>2008-06-03 20:22:19 +0200
commitbbeff30cbd1c5d551eb0ad1c2239ec01844c0b0a (patch)
tree48f48eadf87f5bc67d2673b7f1ba58a77e882dc2 /board/amcc/yosemite
parent192f90e272b3989ee7b4a666d1fdab831f20f8d2 (diff)
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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>
Diffstat (limited to 'board/amcc/yosemite')
-rw-r--r--board/amcc/yosemite/yosemite.c52
1 files changed, 3 insertions, 49 deletions
diff --git a/board/amcc/yosemite/yosemite.c b/board/amcc/yosemite/yosemite.c
index 212fab8..8345537 100644
--- a/board/amcc/yosemite/yosemite.c
+++ b/board/amcc/yosemite/yosemite.c
@@ -200,7 +200,7 @@ int checkboard(void)
}
/*************************************************************************
- * sdram_init -- doesn't use serial presence detect.
+ * initdram -- doesn't use serial presence detect.
*
* Assumes: 256 MB, ECC, non-registered
* PLB @ 133 MHz
@@ -281,7 +281,7 @@ void sdram_tr1_set(int ram_address, int* tr1_value)
*tr1_value = (first_good + last_bad) / 2;
}
-void sdram_init(void)
+long int initdram(int board)
{
register uint reg;
int tr1_bank1, tr1_bank2;
@@ -327,57 +327,11 @@ void sdram_init(void)
sdram_tr1_set(0x00000000, &tr1_bank1);
sdram_tr1_set(0x08000000, &tr1_bank2);
- mtsdram(mem_tr1, (((tr1_bank1+tr1_bank2)/2) | 0x80800800) );
-}
+ mtsdram(mem_tr1, (((tr1_bank1+tr1_bank2)/2) | 0x80800800));
-/*************************************************************************
- * long int initdram
- *
- ************************************************************************/
-long int initdram(int board)
-{
- sdram_init();
return CFG_SDRAM_BANKS * (CFG_KBYTES_SDRAM * 1024); /* return bytes */
}
-#if defined(CFG_DRAM_TEST)
-int testdram(void)
-{
- unsigned long *mem = (unsigned long *)0;
- const unsigned long kend = (1024 / sizeof(unsigned long));
- unsigned long k, n;
-
- mtmsr(0);
-
- for (k = 0; k < CFG_KBYTES_SDRAM;
- ++k, mem += (1024 / sizeof(unsigned long))) {
- if ((k & 1023) == 0) {
- printf("%3d MB\r", k / 1024);
- }
-
- memset(mem, 0xaaaaaaaa, 1024);
- for (n = 0; n < kend; ++n) {
- if (mem[n] != 0xaaaaaaaa) {
- printf("SDRAM test fails at: %08x\n",
- (uint) & mem[n]);
- return 1;
- }
- }
-
- memset(mem, 0x55555555, 1024);
- for (n = 0; n < kend; ++n) {
- if (mem[n] != 0x55555555) {
- printf("SDRAM test fails at: %08x\n",
- (uint) & mem[n]);
- return 1;
- }
- }
- }
- printf("SDRAM test passes\n");
- return 0;
-}
-#endif
-
/*************************************************************************
* pci_pre_init
*