Signed-off-by: Maria Butrico <butrico@xxxxxxxxxxxxxx>
summary: detect platform (and non-hypervisor mode).
Detects the platform from the value of the compatible
property (from ofd tree).
diff -r a0fa2ce45bae xen/arch/ppc/Makefile
--- a/xen/arch/ppc/Makefile Mon May 22 11:01:31 2006 -0400
+++ b/xen/arch/ppc/Makefile Mon May 22 15:53:36 2006 -0400
@@ -8,6 +8,7 @@ obj-y += audit.o
obj-y += audit.o
obj-y += bitops.o
obj-y += boot_of.o
+obj-y += compatible.o
obj-y += dart.o
obj-y += dart_u3.o
obj-y += dart_u4.o
diff -r a0fa2ce45bae xen/arch/ppc/setup.c
--- a/xen/arch/ppc/setup.c Mon May 22 11:01:31 2006 -0400
+++ b/xen/arch/ppc/setup.c Mon May 22 15:53:36 2006 -0400
@@ -272,6 +272,9 @@ static void __init __start_xen(multiboot
debugger_trap_immediate();
#endif
+ extern void init_platform (void);
+ init_platform();
+
start_of_day();
/* Create initial domain 0. */
diff -r a0fa2ce45bae xen/arch/ppc/compatible.c
--- /dev/null Thu Jan 1 00:00:00 1970 +0000
+++ b/xen/arch/ppc/compatible.c Mon May 22 15:53:36 2006 -0400
@@ -0,0 +1,104 @@
+#include <xen/config.h>
+#include <xen/init.h>
+#include <xen/lib.h>
+#include <xen/compile.h>
+#include <public/of-devtree.h>
+#include "oftree.h"
+
+#define DEBUG
+#ifdef DEBUG
+#define DBG(fmt...) printk(fmt)
+#else
+#define DBG(fmt...)
+#endif
+
+static void pmac_init(void);
+static void maple_init(void);
+
+enum platform_type { pmac = 1, maple = 2 };
+struct platform {
+ enum platform_type type;
+ char *compat_s;
+ void (*init_func)(void);
+};
+static struct platform platforms[] = {
+ { .type = pmac, .compat_s = "Power Macintosh", .init_func = pmac_init },
+ { .type = maple, .compat_s = "Momentum,Maple", .init_func = maple_init },
+};
+
+struct global_platform {
+ enum platform_type platform_type;
+ int hv_supported;
+};
+static struct global_platform my_platform;
+
+
+static void pmac_init(void)
+{
+ my_platform.hv_supported = 0;
+}
+
+static void maple_init(void)
+{
+ my_platform.hv_supported = 1;
+}
+
+void init_platform(void)
+{
+ void *oft_p;
+ char compatible_string[256];
+ int compatible_length;
+ char *cmpstr;
+ int used_length;
+
+ memset(&my_platform, 0, sizeof(my_platform));
+
+ oft_p = (void *)oftree;
+ compatible_length = ofd_getprop(oft_p, OFD_ROOT, "compatible",
+ compatible_string,
sizeof(compatible_string));
+ if (compatible_length < 0) {
+ return;
+ }
+
+ // loop over each null terminated piece of the compatible property
+ for (cmpstr = compatible_string, used_length = 0;
+ used_length < compatible_length;
+ cmpstr = &compatible_string[used_length]) {
+ int i;
+ for (i = 0; i < ARRAY_SIZE(platforms); i++) {
+ if (strstr(cmpstr, platforms[i].compat_s)) {
+ DBG("Found platform %s.\n", platforms[i].compat_s);
+ my_platform.platform_type = platforms[i].type;
+ (void) platforms[i].init_func();
+ DBG("%s: platform type=%d hv=%d\n",
+ __func__,
+ my_platform.platform_type,
+ my_platform.hv_supported);
+
+ return;
+ }
+ }
+ used_length += strlen(cmpstr) + 1;
+ }
+
+ DBG("Warning: %s is not aware of this machine type. "
+ "Compatible is:\n", __func__);
+ for (used_length = 0; used_length < compatible_length; used_length++) {
+ if (compatible_string[used_length] == '\0' ) {
+ DBG(" NULL ");
+ } else {
+ DBG("%c", compatible_string[used_length]);
+ }
+ }
+ DBG("\n");
+}
+
+int hv_supported(void)
+{
+ return my_platform.hv_supported;
+}
+
+int is_platform_pmac(void)
+{
+ return (my_platform.platform_type == pmac);
+}
_______________________________________________
Xen-ppc-devel mailing list
Xen-ppc-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-ppc-devel
|
Home