This patch fixes a problem with the SDRAM initialization of the zeus
board port. It also enable the FDT support to support booting
arch/powerpc Linux kernel versions.
Signed-off-by: Stefan Roese <[EMAIL PROTECTED]>
---
board/zeus/zeus.c | 23 -----------------------
cpu/ppc4xx/sdram.c | 14 ++++++++++----
include/configs/zeus.h | 6 ++++++
3 files changed, 16 insertions(+), 27 deletions(-)
diff --git a/board/zeus/zeus.c b/board/zeus/zeus.c
index 33d971a..2a4ec5c 100644
--- a/board/zeus/zeus.c
+++ b/board/zeus/zeus.c
@@ -190,29 +190,6 @@ int checkboard(void)
return (0);
}
-static u32 detect_sdram_size(void)
-{
- u32 val;
- u32 size;
-
- mfsdram(mem_mb0cf, val);
- size = (4 << 20) << ((val & 0x000e0000) >> 17);
-
- /*
- * Check if 2nd bank is enabled too
- */
- mfsdram(mem_mb1cf, val);
- if (val & 1)
- size += (4 << 20) << ((val & 0x000e0000) >> 17);
-
- return size;
-}
-
-phys_size_t initdram (int board_type)
-{
- return detect_sdram_size();
-}
-
static int default_env_var(char *buf, char *var)
{
char *ptr;
diff --git a/cpu/ppc4xx/sdram.c b/cpu/ppc4xx/sdram.c
index 7d60ad6..b5a6a4c 100644
--- a/cpu/ppc4xx/sdram.c
+++ b/cpu/ppc4xx/sdram.c
@@ -209,15 +209,15 @@ phys_size_t initdram(int board_type)
udelay(10000);
if (get_ram_size(0, mb0cf[i].size) == mb0cf[i].size) {
+ phys_size_t size = mb0cf[i].size;
+
/*
* OK, size detected. Enable second bank if
* defined (assumes same type as bank 0)
*/
#ifdef CONFIG_SDRAM_BANK1
- u32 b1cr = mb0cf[i].size | mb0cf[i].reg;
-
mtsdram(mem_mcopt1, 0x00000000);
- mtsdram(mem_mb1cf, b1cr); /* SDRAM0_B1CR */
+ mtsdram(mem_mb1cf, mb0cf[i].size | mb0cf[i].reg);
mtsdram(mem_mcopt1, 0x80800000);
udelay(10000);
@@ -230,13 +230,19 @@ phys_size_t initdram(int board_type)
mb0cf[i].size) {
mtsdram(mem_mb1cf, 0);
mtsdram(mem_mcopt1, 0);
+ } else {
+ /*
+ * We have two identical banks, so the size
+ * is twice the bank size
+ */
+ size = 2 * size;
}
#endif
/*
* OK, size detected -> all done
*/
- return mb0cf[i].size;
+ return size;
}
}
diff --git a/include/configs/zeus.h b/include/configs/zeus.h
index b50cba5..b71f711 100644
--- a/include/configs/zeus.h
+++ b/include/configs/zeus.h
@@ -309,6 +309,12 @@
#define CONFIG_KGDB_SER_INDEX 2 /* which serial port to use */
#endif
+/*
+ * Pass open firmware flat tree
+ */
+#define CONFIG_OF_LIBFDT
+#define CONFIG_OF_BOARD_SETUP
+
/* ENVIRONMENT VARS */
#define CONFIG_PREBOOT "echo;echo Welcome to Bulletendpoints board
v1.1;echo"
--
1.5.6.5
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