Allow RiscPC machines to boot an initrd (tagged list fix).

svn path=/dists/sid/linux-2.6/; revision=6679

debian/changelog

@@ -11,6 +11,7 @@ linux-2.6 (2.6.16-15) UNRELEASED; urgency=low
   * [mips/b1-bcm91250a] Enable SMP.
   * [mips] Add a compile fix for the Maxine fb.
   * [mipsel] Add a patch that let's you enable serial console on DECstation.
+  * [arm] Allow RiscPC machines to boot an initrd (tagged list fix).
 
  -- maximilian attems <maks@sternwelten.at>  Wed, 24 May 2006 11:29:16 +0200
 

debian/patches/arm-rpc-initrd.patch

@@ -0,0 +1,53 @@
+# RiscPC: disable video output if there's a tagged list
+# From: Jim Hawkins <jawkins@armedslack.org>
+
+# Upstream status: the patch works as it is, but rmk would like to see a
+# different solution, see
+# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=3532/1
+
+
+diff --git a/include/asm-arm/arch-rpc/uncompress.h b/include/asm-arm/arch-rpc/uncompress.h
+index 06231ed..26aec62 100644
+--- a/include/asm-arm/arch-rpc/uncompress.h
++++ b/include/asm-arm/arch-rpc/uncompress.h
+@@ -11,7 +11,9 @@
+  
+ #include <asm/hardware.h>
+ #include <asm/io.h>
++#include <asm/setup.h>
+ 
++int video_ok = 0;
+ int video_num_columns, video_num_lines, video_size_row;
+ int white, bytes_per_char_h;
+ extern unsigned long con_charconvtable[256];
+@@ -73,6 +75,10 @@ static void putc(int c)
+ 	int x,y;
+ 	char *ptr;
+ 
++	/* Do nothing if we don't have video info */
++	if (!video_ok)
++		return;
++
+ 	x = params->video_x;
+ 	y = params->video_y;
+ 
+@@ -108,6 +114,10 @@ static void error(char *x);
+ static void arch_decomp_setup(void)
+ {
+ 	int i;
++
++	/* Don't do video if we're passed a kernel tagged list */
++	if (((struct tag_header *)params)->tag == ATAG_CORE)
++		return;
+ 	
+ 	video_num_lines = params->video_num_rows;
+ 	video_num_columns = params->video_num_cols;
+@@ -147,6 +157,8 @@ static void arch_decomp_setup(void)
+ 	}
+ 
+ 	if (params->nr_pages * params->page_size < 4096*1024) error("<4M of mem\n");
++
++	video_ok = 1;
+ }
+ #endif
+ 

debian/patches/series/15

@@ -1,2 +1,3 @@
 + 2.6.16.18
 + mips-maxine-compile.patch
++ arm-rpc-initrd.patch