[PATCH v2 14/19] ASoC: SOF: Intel: hda: Add flag to indicate that the firmware is IMR booted

[Peter Ujfalusi]

Dynamic loading of external libraries should not be done if the firmware
was booted from IMR since in that case the libraries will be restored along
with the basefw.

The booted_from_imr flag is introduced and set to true if the IMR boot was
successful and to false if cold booting is executed.

The reason for the new flag is that guessing from existing flags, used to
decide if we should try booting from IMR or not is not going to be robust
as the IMR boot itself can fail and in that case a full, cold boot is
executed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Chao Song <chao.song at intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen at linux.intel.com>
---
 sound/soc/sof/intel/hda-loader.c | 6 +++++-
 sound/soc/sof/intel/hda.h        | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/intel/hda-loader.c b/sound/soc/sof/intel/hda-loader.c
index 147ddc5ee932..5ed524e166d2 100644
--- a/sound/soc/sof/intel/hda-loader.c
+++ b/sound/soc/sof/intel/hda-loader.c
@@ -396,12 +396,16 @@ int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev)
 		dev_dbg(sdev->dev, "IMR restore supported, booting from IMR directly\n");
 		hda->boot_iteration = 0;
 		ret = hda_dsp_boot_imr(sdev);
-		if (!ret)
+		if (!ret) {
+			hda->booted_from_imr = true;
 			return 0;
+		}
 
 		dev_warn(sdev->dev, "IMR restore failed, trying to cold boot\n");
 	}
 
+	hda->booted_from_imr = false;
+
 	chip_info = desc->chip_info;
 
 	if (sdev->basefw.fw->size <= sdev->basefw.payload_offset) {
diff --git a/sound/soc/sof/intel/hda.h b/sound/soc/sof/intel/hda.h
index 65657d145dc2..4d9eb321a046 100644
--- a/sound/soc/sof/intel/hda.h
+++ b/sound/soc/sof/intel/hda.h
@@ -481,6 +481,7 @@ enum sof_hda_D0_substate {
 struct sof_intel_hda_dev {
 	bool imrboot_supported;
 	bool skip_imr_boot;
+	bool booted_from_imr;
 
 	int boot_iteration;
 
-- 
2.38.1