diff options
Diffstat (limited to 'drivers/misc/habanalabs/common/firmware_if.c')
| -rw-r--r-- | drivers/misc/habanalabs/common/firmware_if.c | 60 |
1 files changed, 44 insertions, 16 deletions
diff --git a/drivers/misc/habanalabs/common/firmware_if.c b/drivers/misc/habanalabs/common/firmware_if.c index 0e1c629e9800..20f77f58edef 100644 --- a/drivers/misc/habanalabs/common/firmware_if.c +++ b/drivers/misc/habanalabs/common/firmware_if.c @@ -627,25 +627,38 @@ int hl_fw_read_preboot_status(struct hl_device *hdev, u32 cpu_boot_status_reg, security_status = RREG32(cpu_security_boot_status_reg); /* We read security status multiple times during boot: - * 1. preboot - we check if fw security feature is supported - * 2. boot cpu - we get boot cpu security status - * 3. FW application - we get FW application security status + * 1. preboot - a. Check whether the security status bits are valid + * b. Check whether fw security is enabled + * c. Check whether hard reset is done by preboot + * 2. boot cpu - a. Fetch boot cpu security status + * b. Check whether hard reset is done by boot cpu + * 3. FW application - a. Fetch fw application security status + * b. Check whether hard reset is done by fw app * * Preboot: * Check security status bit (CPU_BOOT_DEV_STS0_ENABLED), if it is set * check security enabled bit (CPU_BOOT_DEV_STS0_SECURITY_EN) */ if (security_status & CPU_BOOT_DEV_STS0_ENABLED) { - hdev->asic_prop.fw_security_status_valid = 1; - prop->fw_security_disabled = - !(security_status & CPU_BOOT_DEV_STS0_SECURITY_EN); + prop->fw_security_status_valid = 1; + + if (security_status & CPU_BOOT_DEV_STS0_SECURITY_EN) + prop->fw_security_disabled = false; + else + prop->fw_security_disabled = true; + + if (security_status & CPU_BOOT_DEV_STS0_FW_HARD_RST_EN) + prop->hard_reset_done_by_fw = true; } else { - hdev->asic_prop.fw_security_status_valid = 0; + prop->fw_security_status_valid = 0; prop->fw_security_disabled = true; } + dev_dbg(hdev->dev, "Firmware preboot hard-reset is %s\n", + prop->hard_reset_done_by_fw ? "enabled" : "disabled"); + dev_info(hdev->dev, "firmware-level security is %s\n", - prop->fw_security_disabled ? "disabled" : "enabled"); + prop->fw_security_disabled ? "disabled" : "enabled"); return 0; } @@ -655,6 +668,7 @@ int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg, u32 cpu_security_boot_status_reg, u32 boot_err0_reg, bool skip_bmc, u32 cpu_timeout, u32 boot_fit_timeout) { + struct asic_fixed_properties *prop = &hdev->asic_prop; u32 status; int rc; @@ -723,11 +737,22 @@ int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg, /* Read U-Boot version now in case we will later fail */ hdev->asic_funcs->read_device_fw_version(hdev, FW_COMP_UBOOT); + /* Clear reset status since we need to read it again from boot CPU */ + prop->hard_reset_done_by_fw = false; + /* Read boot_cpu security bits */ - if (hdev->asic_prop.fw_security_status_valid) - hdev->asic_prop.fw_boot_cpu_security_map = + if (prop->fw_security_status_valid) { + prop->fw_boot_cpu_security_map = RREG32(cpu_security_boot_status_reg); + if (prop->fw_boot_cpu_security_map & + CPU_BOOT_DEV_STS0_FW_HARD_RST_EN) + prop->hard_reset_done_by_fw = true; + } + + dev_dbg(hdev->dev, "Firmware boot CPU hard-reset is %s\n", + prop->hard_reset_done_by_fw ? "enabled" : "disabled"); + if (rc) { detect_cpu_boot_status(hdev, status); rc = -EIO; @@ -796,18 +821,21 @@ int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg, goto out; } + /* Clear reset status since we need to read again from app */ + prop->hard_reset_done_by_fw = false; + /* Read FW application security bits */ - if (hdev->asic_prop.fw_security_status_valid) { - hdev->asic_prop.fw_app_security_map = + if (prop->fw_security_status_valid) { + prop->fw_app_security_map = RREG32(cpu_security_boot_status_reg); - if (hdev->asic_prop.fw_app_security_map & + if (prop->fw_app_security_map & CPU_BOOT_DEV_STS0_FW_HARD_RST_EN) - hdev->asic_prop.hard_reset_done_by_fw = true; + prop->hard_reset_done_by_fw = true; } - dev_dbg(hdev->dev, "Firmware hard-reset is %s\n", - hdev->asic_prop.hard_reset_done_by_fw ? "enabled" : "disabled"); + dev_dbg(hdev->dev, "Firmware application CPU hard-reset is %s\n", + prop->hard_reset_done_by_fw ? "enabled" : "disabled"); dev_info(hdev->dev, "Successfully loaded firmware to device\n"); |