diff -urpN -X ../dontdiff linux-2.6.20-rmk-12feb2007/Documentation/arm/Samsung-S3C24XX/Suspend.txt linux-2.6.20-rmk-12feb2007-pm1/Documentation/arm/Samsung-S3C24XX/Suspend.txt
--- linux-2.6.20-rmk-12feb2007/Documentation/arm/Samsung-S3C24XX/Suspend.txt	2007-02-04 18:44:54.000000000 +0000
+++ linux-2.6.20-rmk-12feb2007-pm1/Documentation/arm/Samsung-S3C24XX/Suspend.txt	2007-02-13 14:24:34.000000000 +0000
@@ -53,6 +53,11 @@ Machine Support
   saving the resume address, if your board requires it, then contact
   the maintainer and discuss what is required.
 
+  The include/asm-arm/plat-s3c24xx/pm.h defines an hook pm_board_prep
+  if the board needs to process something very late in the suspend
+  process. For example, the htc pm system writes a check value of part
+  of the RAM for the bootloader to check on resumption.
+
   Note, the original method of adding an late_initcall() is wrong,
   and will end up initialising all compiled machines' pm init!
 
diff -urpN -X ../dontdiff linux-2.6.20-rmk-12feb2007/include/asm-arm/plat-s3c24xx/pm.h linux-2.6.20-rmk-12feb2007-pm1/include/asm-arm/plat-s3c24xx/pm.h
--- linux-2.6.20-rmk-12feb2007/include/asm-arm/plat-s3c24xx/pm.h	2007-02-12 10:28:24.000000000 +0000
+++ linux-2.6.20-rmk-12feb2007-pm1/include/asm-arm/plat-s3c24xx/pm.h	2007-02-13 14:15:05.000000000 +0000
@@ -39,6 +39,10 @@ extern unsigned long s3c_irqwake_eintall
 extern void (*pm_cpu_prep)(void);
 extern void (*pm_cpu_sleep)(void);
 
+/* use these if the board needs very late code to suspend */
+
+extern void (*pm_board_prep)(void);
+
 /* Flags for PM Control */
 
 extern unsigned long s3c_pm_flags;
diff -urpN -X ../dontdiff linux-2.6.20-rmk-12feb2007/arch/arm/plat-s3c24xx/pm.c linux-2.6.20-rmk-12feb2007-pm1/arch/arm/plat-s3c24xx/pm.c
--- linux-2.6.20-rmk-12feb2007/arch/arm/plat-s3c24xx/pm.c	2007-02-12 10:28:24.000000000 +0000
+++ linux-2.6.20-rmk-12feb2007-pm1/arch/arm/plat-s3c24xx/pm.c	2007-02-13 14:15:46.000000000 +0000
@@ -488,6 +488,7 @@ static void s3c2410_pm_configure_extint(
 
 void (*pm_cpu_prep)(void);
 void (*pm_cpu_sleep)(void);
+void (*pm_board_prep)(void);
 
 #define any_allowed(mask, allow) (((mask) & (allow)) != (allow))
 
@@ -564,6 +565,11 @@ static int s3c2410_pm_enter(suspend_stat
 
 	pm_cpu_prep();
 
+	if (pm_board_prep) {
+		flush_cache_all();
+		pm_board_prep();
+	}
+
 	/* flush cache back to ram */
 
 	flush_cache_all();