diff options
| author | Bharat Jauhari <bjauhari@habana.ai> | 2021-05-28 13:14:34 +0300 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2021-06-18 15:23:41 +0300 |
| commit | 4b09901cf71fdb71f7652b22a4f5e033f7defef9 (patch) | |
| tree | d39c5cb938d9231e81cae139571f8ef0fc2c48db /drivers/misc/habanalabs/common/firmware_if.c | |
| parent | 358526be824f311e1db0d192cb9e96d85d27ac1d (diff) | |
| download | lwn-4b09901cf71fdb71f7652b22a4f5e033f7defef9.tar.gz lwn-4b09901cf71fdb71f7652b22a4f5e033f7defef9.zip | |
habanalabs: enable dram scramble before linux f/w
In current code, for dynamic f/w loading flow, DRAM scrambling is
enabled post Linux fit image is loaded to the card. This can cause the
device CPU to go into reset state.
The correct sequence should be:
1. Load boot fit image
2. Enable scrambling
3. Load Linux fit image
This commit aligns the DRAM scrambling enabling with the static f/w load
flow.
Signed-off-by: Bharat Jauhari <bjauhari@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/misc/habanalabs/common/firmware_if.c')
| -rw-r--r-- | drivers/misc/habanalabs/common/firmware_if.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/common/firmware_if.c b/drivers/misc/habanalabs/common/firmware_if.c index d5a3c786d4c9..2bb2a4145640 100644 --- a/drivers/misc/habanalabs/common/firmware_if.c +++ b/drivers/misc/habanalabs/common/firmware_if.c @@ -2149,6 +2149,11 @@ static int hl_fw_dynamic_init_cpu(struct hl_device *hdev, if (rc) goto protocol_err; + /* Enable DRAM scrambling before Linux boot and after successful + * UBoot + */ + hdev->asic_funcs->init_cpu_scrambler_dram(hdev); + if (!(hdev->fw_components & FW_TYPE_LINUX)) { dev_info(hdev->dev, "Skip loading Linux F/W\n"); return 0; @@ -2295,6 +2300,11 @@ static int hl_fw_static_init_cpu(struct hl_device *hdev, goto out; } + /* Enable DRAM scrambling before Linux boot and after successful + * UBoot + */ + hdev->asic_funcs->init_cpu_scrambler_dram(hdev); + if (!(hdev->fw_components & FW_TYPE_LINUX)) { dev_info(hdev->dev, "Skip loading Linux F/W\n"); goto out; |