[coreboot] r3937 - trunk/coreboot-v2/src/cpu/x86/mtrr
svn at coreboot.org
svn at coreboot.org
Wed Feb 11 17:57:33 CET 2009
Author: hailfinger
Date: 2009-02-11 17:57:32 +0100 (Wed, 11 Feb 2009)
New Revision: 3937
Modified:
trunk/coreboot-v2/src/cpu/x86/mtrr/mtrr.c
Log:
Print a loud warning message if we run out of MTRRs.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006 at gmx.net>
Acked-by: Myles Watson <mylesgw at gmail.com>
Modified: trunk/coreboot-v2/src/cpu/x86/mtrr/mtrr.c
===================================================================
--- trunk/coreboot-v2/src/cpu/x86/mtrr/mtrr.c 2009-02-11 12:08:55 UTC (rev 3936)
+++ trunk/coreboot-v2/src/cpu/x86/mtrr/mtrr.c 2009-02-11 16:57:32 UTC (rev 3937)
@@ -228,9 +228,14 @@
unsigned long range_startk, unsigned long range_sizek,
unsigned long next_range_startk, unsigned char type, unsigned address_bits)
{
- if (!range_sizek || (reg >= BIOS_MTRRS)) {
+ if (!range_sizek) {
+ printk_debug("range_to_mtrr called for empty range\n");
return reg;
}
+ if (reg >= BIOS_MTRRS) {
+ printk_err("Running out of variable MTRRs!\n");
+ return reg;
+ }
while(range_sizek) {
unsigned long max_align, align;
unsigned long sizek;
@@ -249,8 +254,10 @@
set_var_mtrr(reg++, range_startk, sizek, type, address_bits);
range_startk += sizek;
range_sizek -= sizek;
- if (reg >= BIOS_MTRRS)
+ if (reg >= BIOS_MTRRS) {
+ printk_err("Running out of variable MTRRs!\n");
break;
+ }
}
return reg;
}
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