New patch to review for coreboot: 70f3f74 rk3288: configure l2ctlr in romstage

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9347

-gerrit

commit 70f3f7437af09c1644eacbcf2a945d42959dc78c
Author: huang lin 
Date:   Thu Oct 16 09:27:31 2014 -0700

rk3288: configure l2ctlr in romstage

Data RAM write latency: 2 cycles
    Data RAM read latency: 2 cycles
    Data RAM setup latency: 1 cycle
    Tag RAM write latency: 1 cycle
    Tag RAM read latency: 1 cycle
    Tag RAM setup latency: 1 cycle

BUG=None
    TEST=Boot Veyron Pinky

Change-Id: I1d710f65114be6a976aa3fe23b076e89c14ac8b8
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 421c2e5ba44f1693f8b3c869289fc93ab9ef5965
    Original-Change-Id: Ic9c909b7913d434bd40016c6a820ddff7e991634
    Original-Signed-off-by: huang lin 
    Original-Reviewed-on: https://chromium-review.googlesource.com/223713
    Original-Reviewed-by: Doug Anderson 
    Original-Commit-Queue: Doug Anderson 
---
 src/mainboard/google/veyron_pinky/romstage.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/mainboard/google/veyron_pinky/romstage.c b/src/mainboard/google/veyron_pinky/romstage.c
index 6f9b9d1..76a57e2 100644
--- a/src/mainboard/google/veyron_pinky/romstage.c
+++ b/src/mainboard/google/veyron_pinky/romstage.c
@@ -55,6 +55,25 @@ static void regulate_vdd_log(unsigned int mv)
    pwm_init(1, period_ns, duty_ns);
 }

+static void configure_l2ctlr(void)
+{
+	uint32_t l2ctlr;
+
+	l2ctlr = read_l2ctlr();
+	l2ctlr &= 0xfffc0000; /* clear bit0~bit17 */
+
+	/*
+	* Data RAM write latency: 2 cycles
+	* Data RAM read latency: 2 cycles
+	* Data RAM setup latency: 1 cycle
+	* Tag RAM write latency: 1 cycle
+	* Tag RAM read latency: 1 cycle
+	* Tag RAM setup latency: 1 cycle
+	*/
+	l2ctlr |= (1 << 3 | 1 << 0);
+	write_l2ctlr(l2ctlr);
+}
+
 void main(void)
 {
 #if CONFIG_COLLECT_TIMESTAMPS
@@ -66,6 +85,7 @@ void main(void)
 #endif

console_init();
+	configure_l2ctlr();

/* vdd_log 1200mv is enough for ddr run 666Mhz */
    regulate_vdd_log(1200);