ppc4xx: Add routine to retrieve CPU number
Provide a weak defined routine to retrieve the CPU number for
reference boards that have multiple CPU's. Default behavior
is the existing single CPU print output. Reference boards with
multiple CPU's need to provide a board specific routine.
See board/amcc/arches/arches.c for an example.
Signed-off-by: Adam Graham <agraham@amcc.com>
Signed-off-by: Victor Gallardo <vgallardo@amcc.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/cpu/ppc4xx/cpu.c b/cpu/ppc4xx/cpu.c
index 66a7737..a676b30 100644
--- a/cpu/ppc4xx/cpu.c
+++ b/cpu/ppc4xx/cpu.c
@@ -41,6 +41,18 @@
void board_reset(void);
+/*
+ * To provide an interface to detect CPU number for boards that support
+ * more then one CPU, we implement the "weak" default functions here.
+ *
+ * Returns CPU number
+ */
+int __get_cpu_num(void)
+{
+ return NA_OR_UNKNOWN_CPU;
+}
+int get_cpu_num(void) __attribute__((weak, alias("__get_cpu_num")));
+
#if defined(CONFIG_405GP) || \
defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
@@ -274,8 +286,13 @@
#if !defined(CONFIG_IOP480)
char addstr[64] = "";
sys_info_t sys_info;
+ int cpu_num;
- puts ("CPU: ");
+ cpu_num = get_cpu_num();
+ if (cpu_num >= 0)
+ printf("CPU%d: ", cpu_num);
+ else
+ puts("CPU: ");
get_sys_info(&sys_info);
diff --git a/include/ppc4xx.h b/include/ppc4xx.h
index ce4b29a..f147885 100644
--- a/include/ppc4xx.h
+++ b/include/ppc4xx.h
@@ -218,4 +218,7 @@
#endif /* __ASSEMBLY__ */
+/* for multi-cpu support */
+#define NA_OR_UNKNOWN_CPU -1
+
#endif /* __PPC4XX_H__ */