Module Name: src
Committed By: thorpej
Date: Sat Feb 20 01:57:54 UTC 2021
Modified Files:
src/sys/arch/powerpc/powerpc: ofw_machdep.c
Log Message:
Query real-mode? at startup and cache the result.
To generate a diff of this commit:
cvs rdiff -u -r1.28 -r1.29 src/sys/arch/powerpc/powerpc/ofw_machdep.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/powerpc/powerpc/ofw_machdep.c
diff -u src/sys/arch/powerpc/powerpc/ofw_machdep.c:1.28 src/sys/arch/powerpc/powerpc/ofw_machdep.c:1.29
--- src/sys/arch/powerpc/powerpc/ofw_machdep.c:1.28 Fri Feb 19 05:21:39 2021
+++ src/sys/arch/powerpc/powerpc/ofw_machdep.c Sat Feb 20 01:57:54 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: ofw_machdep.c,v 1.28 2021/02/19 05:21:39 thorpej Exp $ */
+/* $NetBSD: ofw_machdep.c,v 1.29 2021/02/20 01:57:54 thorpej Exp $ */
/*-
* Copyright (c) 2007, 2021 The NetBSD Foundation, Inc.
@@ -61,7 +61,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ofw_machdep.c,v 1.28 2021/02/19 05:21:39 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ofw_machdep.c,v 1.29 2021/02/20 01:57:54 thorpej Exp $");
#include <sys/param.h>
#include <sys/buf.h>
@@ -91,6 +91,8 @@ __KERNEL_RCSID(0, "$NetBSD: ofw_machdep.
int ofw_root;
int ofw_chosen;
+bool ofw_real_mode;
+
/*
* Bootstrap console support functions.
*/
@@ -411,6 +413,21 @@ ofw_bootstrap_get_translations(void)
}
}
+static bool
+ofw_option_truefalse(const char *prop, int proplen)
+{
+ /* These are all supposed to be strings. */
+ switch (prop[0]) {
+ case 'y':
+ case 'Y':
+ case 't':
+ case 'T':
+ case '1':
+ return true;
+ }
+ return false;
+}
+
/*
* Called from ofwinit() very early in bootstrap. We are still
* running on the stack provided by OpenFirmware and in the same
@@ -421,6 +438,9 @@ ofw_bootstrap_get_translations(void)
void
ofw_bootstrap(void)
{
+ char prop[32];
+ int handle, proplen;
+
/* Stash the handles for "/" and "/chosen" for convenience later. */
ofw_root = OF_finddevice("/");
ofw_chosen = OF_finddevice("/chosen");
@@ -428,6 +448,19 @@ ofw_bootstrap(void)
/* Initialize the early bootstrap console. */
ofw_bootstrap_console();
+ /* Check to see if we're running in real-mode. */
+ handle = OF_finddevice("/options");
+ if (handle != -1) {
+ proplen = OF_getprop(handle, "real-mode?", prop, sizeof(prop));
+ if (proplen > 0) {
+ ofw_real_mode = ofw_option_truefalse(prop, proplen);
+ } else {
+ ofw_real_mode = false;
+ }
+ }
+ aprint_normal("OpenFirmware running in %s-mode\n",
+ ofw_real_mode ? "real" : "virtual");
+
/* Get #address-cells and #size-cells to fething memory info. */
if (OF_getprop(ofw_root, "#address-cells", &ofw_address_cells,
sizeof(ofw_address_cells)) <= 0)
