patch-1.3.4 linux/arch/sparc/prom/mp.c

• Lines: 87
• Date: Sat Jun 17 10:46:00 1995
• Orig file: v1.3.3/linux/arch/sparc/prom/mp.c
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.3/linux/arch/sparc/prom/mp.c linux/arch/sparc/prom/mp.c
@@ -0,0 +1,86 @@
+/* mp.c:  OpenBoot Prom Multiprocessor support routines.  Don't call
+ *        these on a UP or else you will halt and catch fire. ;)
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+
+/* Start cpu with prom-tree node 'cpunode' using context described
+ * by 'ctable_reg' in context 'ctx' at program counter 'pc'.
+ *
+ * XXX Have to look into what the return values mean. XXX
+ */
+int
+prom_startcpu(int cpunode, struct linux_prom_registers *ctable_reg, int ctx, char *pc)
+{
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+		break;
+	case PROM_V3:
+	case PROM_P1275:
+		return (*(romvec->v3_cpustart))(cpunode, (int) ctable_reg, ctx, pc);
+		break;
+	};
+
+	return -1;
+}
+
+/* Stop CPU with device prom-tree node 'cpunode'.
+ * XXX Again, what does the return value really mean? XXX
+ */
+int
+prom_stopcpu(int cpunode)
+{
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+		break;
+	case PROM_V3:
+	case PROM_P1275:
+		return (*(romvec->v3_cpustop))(cpunode);
+		break;
+	};
+
+	return -1;
+}
+
+/* Make CPU with device prom-tree node 'cpunode' idle.
+ * XXX Return value, anyone? XXX
+ */
+int
+prom_idlecpu(int cpunode)
+{
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+		break;
+	case PROM_V3:
+	case PROM_P1275:
+		return (*(romvec->v3_cpuidle))(cpunode);
+		break;
+	};
+
+	return -1;
+}
+
+/* Resume the execution of CPU with nodeid 'cpunode'.
+ * XXX Come on, somebody has to know... XXX
+ */
+int
+prom_restartcpu(int cpunode)
+{
+	switch(prom_vers) {
+	case PROM_V0:
+	case PROM_V2:
+		break;
+	case PROM_V3:
+	case PROM_P1275:
+		return (*(romvec->v3_cpuresume))(cpunode);
+		break;
+	};
+
+	return -1;
+}