patch-2.4.20 linux-2.4.20/arch/mips/sibyte/sb1250/setup.c

• Lines: 89
• Date: Thu Nov 28 15:53:10 2002
• Orig file: linux-2.4.19/arch/mips/sibyte/sb1250/setup.c
• Orig date: Fri Aug 2 17:39:43 2002

diff -urN linux-2.4.19/arch/mips/sibyte/sb1250/setup.c linux-2.4.20/arch/mips/sibyte/sb1250/setup.c
@@ -10,58 +10,45 @@
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 
-/* Setup code likely to be common to all SB1250 platforms */
-#include <linux/config.h>
-#include <linux/errno.h>
-#include <linux/hdreg.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/string.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/utsname.h>
-#include <linux/a.out.h>
-#include <linux/tty.h>
-#include <linux/bootmem.h>
-#ifdef CONFIG_BLK_DEV_RAM
-#include <linux/blk.h>
-#endif
-#include <linux/ide.h>
-#ifdef CONFIG_RTC
-#include <linux/timex.h>
-#endif
-
-#include <asm/asm.h>
-#include <asm/bootinfo.h>
-#include <asm/cachectl.h>
-#include <asm/cpu.h>
-#include <asm/io.h>
-#include <asm/stackframe.h>
-#include <asm/system.h>
-#include <asm/cpu.h>
-#include <asm/mmu_context.h>
-#include <asm/sibyte/swarm.h>
-#include <asm/sibyte/sb1250_defs.h>
+#include <asm/sibyte/sb1250.h>
 #include <asm/sibyte/sb1250_regs.h>
- 
+#include <asm/sibyte/sb1250_scd.h>
+#include <asm/sibyte/64bit.h>
 
-/* 
- *
- */
+/* Setup code likely to be common to all BCM1250 platforms */
 
+unsigned int sb1250_pass;
 
 void sb1250_setup(void)
 {
+	int bad_config = 0;
+
+	sb1250_pass = G_SYS_REVISION(in64(IO_SPACE_BASE | A_SCD_SYSTEM_REVISION));
+	/* sb1250_pass is more specific than "1", "2" etc.  There are
+           many revision numbers corresponding to "Pass 2". */
+	switch(sb1250_pass) {
+	case 1:
+#ifndef CONFIG_SB1_PASS_1_WORKAROUNDS
+		printk("@@@@ This is a pass 1 board, and the kernel doesn't have the proper workarounds compiled in. @@@@");
+		bad_config = 1;
+#endif
+		break;
+	default:
+#if defined(CONFIG_CPU_HAS_PREFETCH) || !defined(CONFIG_SB1_PASS_2_WORKAROUNDS)
+		printk("@@@@ This is a pass 2 board, and the kernel doesn't have the proper workarounds compiled in. @@@@");
+		printk("@@@@ Prefetches are enabled in this kernel, but are buggy on this board.  @@@@");
+		bad_config = 1;
+#endif
+		break;
+	}
+	/* XXXKW this is too early for panic/printk to actually do much! */
+	if (bad_config) {
+		panic("Invalid configuration for this pass.");
+	}
 }