Update of /cvsroot/blob/blob/src/blob
In directory usw-pr-cvs1:/tmp/cvs-serv30276
Modified Files:
start.S
Log Message:
- handle PSSR register (hplefully) correctly now. Clear DH and PH
bits when sleep wakeup is detected.
Index: start.S
===================================================================
RCS file: /cvsroot/blob/blob/src/blob/start.S,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -d -r1.5 -r1.6
--- start.S 2001/11/04 23:18:05 1.5
+++ start.S 2001/11/15 11:56:20 1.6
@@ -64,6 +64,7 @@
#define ICMR 0x04
PWR_BASE: .word 0x90020000
+#define PSSR 0x04
#define PSPR 0x08
#define PPCR 0x14
@@ -110,6 +111,15 @@
/* yes, a wake-up. clear RCSR by writing a 1 (see 9.6.2.1 from [1]) */
mov r1, #0x08
str r1, [r0, #RCSR] ;
+
+ /* handle Power Manager Sleep Status Register (PSSR)
+ * see 9.5.7.5 from [1]*/
+ ldr r1, [r0, #PSSR]
+ /* clear DH bit, brings out DRAM from self-refresh */
+ orr r1, r1, #0x08
+ /* clear PH bit, bring periperal pins out from sleep state */
+ orr r1, r1, #0x10
+ str r1, [r0, #PSSR]
/* get the value from the PSPR and jump to it */
ldr r0, PWR_BASE
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