summaryrefslogtreecommitdiff
path: root/cpu
diff options
context:
space:
mode:
authorStefan Roese <sr@denx.de>2008-11-18 16:36:22 +0100
committerShinya Kuribayashi <skuribay@ruby.dti.ne.jp>2008-12-10 23:29:09 +0900
commit44174343688dba32571a34550dba08971c65fef1 (patch)
tree6ca7342381689da038558625d7ff07c53b08f5c7 /cpu
parentdb08ecaa6eb8176904b3bae103a85ee8f735dc40 (diff)
downloadu-boot-imx-44174343688dba32571a34550dba08971c65fef1.zip
u-boot-imx-44174343688dba32571a34550dba08971c65fef1.tar.gz
u-boot-imx-44174343688dba32571a34550dba08971c65fef1.tar.bz2
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>
Diffstat (limited to 'cpu')
-rw-r--r--cpu/mips/start.S4
1 files changed, 4 insertions, 0 deletions
diff --git a/cpu/mips/start.S b/cpu/mips/start.S
index 6a22302..f6069b3 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.
*/