T124: perform ram_repair when CPU rail is powered on in warmboot
This patch is to perform software triggered RAM re-repair in
the warm boot path.
BUG=chrome-os-partner:30430
BRANCH=nyan
TEST=run suspend_stress_test on nyan.
Signed-off-by: Yen Lin<yelin@nvidia.com>
Change-Id: I540f8afbffa323d1e378cb6ba6a20be4afd08339
Reviewed-on: https://chromium-review.googlesource.com/207422
Tested-by: Yen Lin <yelin@nvidia.com>
Reviewed-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Commit-Queue: Yen Lin <yelin@nvidia.com>
(cherry picked from commit f06c413c42819f8f75d9b0fecde02b82583f1d2a)
Reviewed-on: https://chromium-review.googlesource.com/211238
Commit-Queue: Andrew Bresticker <abrestic@chromium.org>
diff --git a/src/soc/nvidia/tegra124/lp0/tegra_lp0_resume.c b/src/soc/nvidia/tegra124/lp0/tegra_lp0_resume.c
index 1e173d6..e5409af 100644
--- a/src/soc/nvidia/tegra124/lp0/tegra_lp0_resume.c
+++ b/src/soc/nvidia/tegra124/lp0/tegra_lp0_resume.c
@@ -200,6 +200,14 @@
FLOW_CLUSTER_ACTIVE_LP = 0x1 << 0
};
+static uint32_t *flow_ctlr_ram_repair_ptr =
+ (void *)(FLOW_CTLR_BASE + 0x40);
+static uint32_t *flow_ctlr_ram_repair_cluster1_ptr =
+ (void *)(FLOW_CTLR_BASE + 0x58);
+enum {
+ RAM_REPAIR_REQ = 0x1 << 0,
+ RAM_REPAIR_STS = 0x1 << 1,
+};
/* Power management controller registers. */
@@ -496,6 +504,24 @@
+/* RAM repair */
+
+void ram_repair(void)
+{
+ // Request Cluster0 RAM repair.
+ setbits32(RAM_REPAIR_REQ, flow_ctlr_ram_repair_ptr);
+ // Poll for Cluster0 RAM repair status.
+ while (!(read32(flow_ctlr_ram_repair_ptr) & RAM_REPAIR_STS))
+ ;
+
+ // Request Cluster1 RAM repair.
+ setbits32(RAM_REPAIR_REQ, flow_ctlr_ram_repair_cluster1_ptr);
+ // Poll for Cluster1 RAM repair status.
+ while (!(read32(flow_ctlr_ram_repair_cluster1_ptr) & RAM_REPAIR_STS))
+ ;
+}
+
+
/* Power. */
static void power_on_partition(unsigned id)
@@ -605,6 +631,9 @@
power_on_main_cpu();
+ // Perform ram repair after cpu is powered on.
+ ram_repair();
+
clear_cpu_resets();
// Halt the AVP.
