sparc: leon3: Added CPU count and frequency detection.

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>

1 files changed, 45 insertions, 1 deletions

diff --git a/arch/sparc/cpu/leon3/cpu.c b/arch/sparc/cpu/leon3/cpu.c
index 7034be60ec3..149e5c69e63 100644
--- a/arch/sparc/cpu/leon3/cpu.c
+++ b/arch/sparc/cpu/leon3/cpu.c
@@ -13,15 +13,59 @@
 
 #include <asm/io.h>
 #include <asm/processor.h>
+#include <ambapp.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
 extern void _reset_reloc(void);
 
+int leon_cpu_cnt = 1;
+int leon_ver = 3;
+unsigned int leon_cpu_freq = CONFIG_SYS_CLK_FREQ;
+
+int cpu_freq(void)
+{
+	ambapp_ahbdev dev;
+
+	if (leon_ver == 3) {
+		ambapp_ahbmst_find(&ambapp_plb, VENDOR_GAISLER,
+			GAISLER_LEON3, 0, &dev);
+	} else {
+		ambapp_ahbmst_find(&ambapp_plb, VENDOR_GAISLER,
+			GAISLER_LEON4, 0, &dev);
+	}
+
+	leon_cpu_freq = ambapp_bus_freq(&ambapp_plb, dev.ahb_bus_index);
+
+	return 0;
+}
+
 int checkcpu(void)
 {
+	int cnt;
+	char str[4];
+
 	/* check LEON version here */
-	printf("CPU: LEON3\n");
+	cnt = ambapp_ahbmst_count(&ambapp_plb, VENDOR_GAISLER, GAISLER_LEON3);
+	if (cnt <= 0) {
+		cnt = ambapp_ahbmst_count(&ambapp_plb, VENDOR_GAISLER,
+			GAISLER_LEON4);
+		if (cnt > 0)
+			leon_ver = 4;
+	}
+
+	cpu_freq();
+
+	str[0] = '\0';
+	if (cnt > 1) {
+		leon_cpu_cnt = cnt;
+		str[0] = '0' + cnt;
+		str[1] = 'x';
+		str[2] = '\0';
+	}
+	printf("CPU: %sLEON%d @ %dMHz\n", str, leon_ver,
+		leon_cpu_freq / 1000000);
+
 	return 0;
 }