[PATCH 5/6] arm: mach-k3: Add a function for printing DM version

[Moteen Shah]

Add a function to print version of the DM firmware in use.
The function queries the firmware capabilities first and if
DM split mode bit is set, sends a request to TISCI for
retrieving the version information.

The DM split mode bit indicates that DM is a separate binary
altogether and hence it will have its own versioning.

Signed-off-by: Moteen Shah <m-shah at ti.com>
---
 arch/arm/mach-k3/common.c | 29 +++++++++++++++++++++++++++++
 arch/arm/mach-k3/common.h |  1 +
 2 files changed, 30 insertions(+)

diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c
index fa8cd93d664..524bb1da1a0 100644
--- a/arch/arm/mach-k3/common.c
+++ b/arch/arm/mach-k3/common.c
@@ -68,6 +68,35 @@ void k3_sysfw_print_ver(void)
 	       ti_sci->version.firmware_revision, fw_desc);
 }
 
+void __maybe_unused k3_dm_print_ver(void)
+{
+	struct ti_sci_handle *ti_sci = get_ti_sci_handle();
+	struct ti_sci_firmware_ops *fw_ops = &ti_sci->ops.fw_ops;
+	struct ti_sci_dm_version_info dm_info = {0};
+	u64 fw_caps;
+	int ret;
+
+	ret = fw_ops->query_dm_cap(ti_sci, &fw_caps);
+	if (ret) {
+		printf("Failed to query DM firmware capability %d\n", ret);
+		return;
+	}
+
+	if (!(fw_caps & TI_SCI_MSG_FLAG_FW_CAP_DM))
+		return;
+
+	ret = fw_ops->get_dm_version(ti_sci, &dm_info);
+	if (ret) {
+		printf("Failed to fetch DM firmware version %d\n", ret);
+		return;
+	}
+
+	printf("DM ABI: %d.%d (firmware ver 0x%04x '%s--%s' "
+	       "patch_ver: %d)\n", dm_info.abi_major, dm_info.abi_minor,
+	       dm_info.dm_ver, dm_info.sci_server_version,
+	       dm_info.rm_pm_hal_version, dm_info.patch_ver);
+}
+
 void mmr_unlock(uintptr_t base, u32 partition)
 {
 	/* Translate the base address */
diff --git a/arch/arm/mach-k3/common.h b/arch/arm/mach-k3/common.h
index 7bd72da1de8..487291697d9 100644
--- a/arch/arm/mach-k3/common.h
+++ b/arch/arm/mach-k3/common.h
@@ -38,6 +38,7 @@ void disable_linefill_optimization(void);
 void remove_fwl_configs(struct fwl_data *fwl_data, size_t fwl_data_size);
 int load_firmware(char *name_fw, char *name_loadaddr, u32 *loadaddr);
 void k3_sysfw_print_ver(void);
+void k3_dm_print_ver(void);
 void spl_enable_cache(void);
 void mmr_unlock(uintptr_t base, u32 partition);
 bool is_rom_loaded_sysfw(struct rom_extended_boot_data *data);
-- 
2.34.1