From: Bin Meng <bmeng.cn@gmail.com>
Date: Mon, 12 Oct 2015 04:37:45 +0000 (-0700)
Subject: x86: baytrail: Issue full system reset in reset_cpu()
X-Git-Tag: v2016.01-rc1~298^2~21
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=74e56d19534f85a0f7d3c84f6d692534f2e1d9b5;p=platform%2Fkernel%2Fu-boot.git

x86: baytrail: Issue full system reset in reset_cpu()

With MRC cache enabled, when typing 'reset' in the U-Boot shell,
BayTrail FSP initialization hangs at "Configuring Memory Start":

  Setting BootMode to 0
  Install PPI: 1F4C6F90-B06B-48D8-A201-BAE5F1CD7D56
  Register PPI Notify: F894643D-C449-42D1-8EA8-85BDD8C65BDE
  About to call MrcInit();
  BayleyBay Platform Type
  CurrentMrcData.BootMode = 4
  Taking Fastboot path!
  Configuring Memory Start...

Changing reset_cpu() to do a full system reset fixes this issue.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
---

diff --git a/arch/x86/cpu/baytrail/valleyview.c b/arch/x86/cpu/baytrail/valleyview.c
index 215e0d0..a009c14 100644
--- a/arch/x86/cpu/baytrail/valleyview.c
+++ b/arch/x86/cpu/baytrail/valleyview.c
@@ -65,3 +65,9 @@ int reserve_arch(void)
 #endif
 }
 #endif
+
+void reset_cpu(ulong addr)
+{
+	/* cold reset */
+	x86_full_reset();
+}