I have bootrom code (ppcboot) for which I have UPM values with which I can access the 16MB PC SDRAM okay but for 32MB memory my bootrom fails to execute out of RAM.
software: Now I have modifyed the AMA and MAMR registers,but it still not work! Hardware: My board uses two HY57V281620A SDRAMS and it's configuration is 4 Banks x 2M x 16bits, 12 rows and 9 column. MPC SDRAM ========= A29 A0 A28 A1 A27 A2 A26 A3 A25 A4 A24 A5 A23 A6 A22 A7 A21 A8 A20 A9 GPL_A0 A10 A18 A11 A7 BA0 A8 BA1 OE_GPL_A1 RAS GPL_A2 CAS GPL_A3 WE What do I have to do get 32MB memory going? Thanks! ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/