From: Tomas Hruby <tom@minix3.org>
Date: Wed, 25 Jan 2012 19:02:13 +0000 (+0000)
Subject: SMP - no_apic=0 and acpi=1 set when CONFIG_SMP=y
X-Git-Tag: v3.2.0~106
X-Git-Url: http://zhaoyanbai.com/repos/?a=commitdiff_plain;h=c468f4efa5a9414c23949372158e711bd7b82a29;p=minix.git

SMP - no_apic=0 and acpi=1 set when CONFIG_SMP=y

- this is a temporary change which makes images compiled for SMP
  boot in SMP mode by default.

- this change is needed until we can configure the multiboot
  images from the boot loader again.
---

diff --git a/kernel/arch/i386/arch_system.c b/kernel/arch/i386/arch_system.c
index 3001df551..b4f33ab21 100644
--- a/kernel/arch/i386/arch_system.c
+++ b/kernel/arch/i386/arch_system.c
@@ -650,9 +650,31 @@ u32_t params_size, params_offset, mon_ds;
 
 PUBLIC int arch_get_params(char *params, int maxsize)
 {
-	phys_copy(seg2phys(mon_ds) + params_offset, vir2phys(params),
-		MIN(maxsize, params_size));
+	int size = 0;
+
+#ifdef CONFIG_SMP
+	/*
+	 * FIXME
+	 * This is a TEMPORARY change until we can pass boot
+	 * command line to multiboot kernels from the boot
+	 * monitor
+	 *
+	 * '\0' separated list of command line options
+	 */
+	char cmdline[] = "no_apic=0\0acpi=1";
+
+	if (maxsize < sizeof(cmdline) - 1)
+		panic("cmdline (%d) exceeds maxsize (%d)",
+				sizeof(cmdline), maxsize);
+	memcpy(params, cmdline, sizeof(cmdline));
+	size = sizeof(cmdline);
+	params[size+1] = '\0';
+#endif
+
+	phys_copy(seg2phys(mon_ds) + params_offset, vir2phys(params + size),
+		MIN(maxsize - size, params_size));
 	params[maxsize-1] = '\0';
+
 	return OK;
 }