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authorwdenk <wdenk>2005-04-05 21:57:18 +0000
committerwdenk <wdenk>2005-04-05 21:57:18 +0000
commit12b43d515c62682fcf7b578f31920a2be49142fe (patch)
tree1bfefb96f221647486f80b4fc91b3a7e3660beca /cpu/mpc8220/dramSetup.c
parentf5c5ef4a1fa7dcf90fd74f795a131d07377406ab (diff)
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Add support for MPC8220 based "sorcery" board.
Diffstat (limited to 'cpu/mpc8220/dramSetup.c')
-rw-r--r--cpu/mpc8220/dramSetup.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/cpu/mpc8220/dramSetup.c b/cpu/mpc8220/dramSetup.c
index 033b719..90a7183 100644
--- a/cpu/mpc8220/dramSetup.c
+++ b/cpu/mpc8220/dramSetup.c
@@ -32,9 +32,9 @@ characteristics to initialize the dram on MPC8220
#include "i2cCore.h"
#include "dramSetup.h"
-#define SPD_SIZE 0x40
-#define DRAM_SPD 0xA2 /* on Board SPD eeprom */
-#define TOTAL_BANK 2
+#define SPD_SIZE CFG_SDRAM_SPD_SIZE
+#define DRAM_SPD (CFG_SDRAM_SPD_I2C_ADDR)<<1 /* on Board SPD eeprom */
+#define TOTAL_BANK CFG_SDRAM_TOTAL_BANKS
int spd_status (volatile i2c8220_t * pi2c, u8 sta_bit, u8 truefalse)
{
@@ -144,7 +144,7 @@ int readSpdData (u8 * spdData)
break;
}
- pi2cReg->adr = 0x90; /* I2C device address */
+ pi2cReg->adr = CFG_I2C_SLAVE<<1;
pi2cReg->cr = I2C_CTL_EN; /* Set Enable */
@@ -569,7 +569,7 @@ u32 dramSetup (void)
cfg_value |= CFG1_SWT2RWP ((type == TYPE_DDR) ? 7 : 2);
/* Set the Read CAS latency. We're going to use a CL of
- * 2 for DDR and SDR.
+ * 2.5 for DDR and 2 SDR.
*/
cfg_value |= CFG1_RLATENCY ((type == TYPE_DDR) ? 7 : 2);
@@ -685,10 +685,14 @@ u32 dramSetup (void)
}
- /* Set up mode value for CAS latency == 2 */
+ /* Set up mode value for CAS latency */
+#if (CFG_SDRAM_CAS_LATENCY==5) /* CL=2.5 */
+ mode_value = (MODE_MODE | MODE_BURSTLEN (MODE_BURSTLEN_8) |
+ MODE_BT_SEQUENTIAL | MODE_CL (MODE_CL_2p5) | MODE_CMD);
+#else
mode_value = (MODE_MODE | MODE_BURSTLEN (MODE_BURSTLEN_8) |
MODE_BT_SEQUENTIAL | MODE_CL (MODE_CL_2) | MODE_CMD);
-
+#endif
asm volatile ("sync");
/* Write Extended Mode - enable DLL */
@@ -698,7 +702,7 @@ u32 dramSetup (void)
memctl->mode = (temp >> 16); /* mode */
asm volatile ("sync");
- /* Write Mode - reset DLL, set CAS latency == 2 */
+ /* Write Mode - reset DLL, set CAS latency */
temp = mode_value | MODE_OPMODE (MODE_OPMODE_RESETDLL);
memctl->mode = (temp >> 16); /* mode */
asm volatile ("sync");