[coreboot] [PATCH 06/16] Port persimmon r6583 to e350m1: pstate 0 early

mbuschman at lucidmachines.com mbuschman at lucidmachines.com
Sat Jun 4 08:10:34 CEST 2011


From: Scott Duplichan <scott at notabs.org>

Switch processor cores to pstate 0 early to reduce boot time.

Signed-off-by: Marshall Buschman <mbuschman at lucidmachines.com>
---
 src/mainboard/asrock/e350m1/romstage.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/mainboard/asrock/e350m1/romstage.c b/src/mainboard/asrock/e350m1/romstage.c
index d761d73..7f0b9df 100644
--- a/src/mainboard/asrock/e350m1/romstage.c
+++ b/src/mainboard/asrock/e350m1/romstage.c
@@ -47,6 +47,9 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx)
   u32 val;
   u8 reg8;
 
+  // all cores: set pstate 0 (1600 MHz) early to save a few ms of boot time
+  __writemsr (0xc0010062, 0);
+
   // early enable of SPI 33 MHz fast mode read
   if (boot_cpu())
     {
-- 
1.7.4.1





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