From: Stefan Roese <sr@denx.de>
Date: Tue, 18 Nov 2008 15:36:22 +0000 (+0100)
Subject: MIPS: Add CONFIG_SKIP_LOWLEVEL_INIT
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=44174343688dba32571a34550dba08971c65fef1;p=u-boot.git

MIPS: Add CONFIG_SKIP_LOWLEVEL_INIT

This patch adds the CONFIG_SKIP_LOWLEVEL_INIT option to start.S. This
enables support for boards where the lowlevel initialization is
already done when U-Boot runs (e.g. via OnChip ROM).

This will be used in the upcoming VCTH board support.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
---

diff --git a/cpu/mips/start.S b/cpu/mips/start.S
index 6a22302a08..f6069b3eea 100644
--- a/cpu/mips/start.S
+++ b/cpu/mips/start.S
@@ -243,9 +243,11 @@ reset:
 	mtc0	zero, CP0_COUNT
 	mtc0	zero, CP0_COMPARE
 
+#if !defined(CONFIG_SKIP_LOWLEVEL_INIT)
 	/* CONFIG0 register */
 	li	t0, CONF_CM_UNCACHED
 	mtc0	t0, CP0_CONFIG
+#endif /* !CONFIG_SKIP_LOWLEVEL_INIT */
 
 	/* Initialize $gp.
 	 */
@@ -255,6 +257,7 @@ reset:
 1:
 	lw	gp, 0(ra)
 
+#if !defined(CONFIG_SKIP_LOWLEVEL_INIT)
 	/* Initialize any external memory.
 	 */
 	la	t9, lowlevel_init
@@ -271,6 +274,7 @@ reset:
 	 */
 	li	t0, CONF_CM_CACHABLE_NONCOHERENT
 	mtc0	t0, CP0_CONFIG
+#endif /* !CONFIG_SKIP_LOWLEVEL_INIT */
 
 	/* Set up temporary stack.
 	 */