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T124: perform ram_repair when CPU rail is powered on in warmboot

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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>
This commit is contained in:
Yen Lin 2014-07-10 14:11:16 -07:00 • committed by chrome-internal-fetch
commit f06c413c42
1 changed files with 29 additions and 0 deletions
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29
src/soc/nvidia/tegra124/lp0/tegra_lp0_resume.c
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@ -200,6 +200,14 @@ enum {
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 @@ static void clear_cpu_resets(void)
/* 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 @@ void lp0_resume(void)
power_on_main_cpu();
// Perform ram repair after cpu is powered on.
ram_repair();
clear_cpu_resets();
// Halt the AVP.