diff mbox series

[08/15] soc: qcom: smem: get serial number from socinfo

Message ID 20241124-b4-modernise-smem-v1-8-b7852c11b67c@linaro.org
State New
Headers show
Series qcom: smem: modernize SMEM in U-Boot | expand

Commit Message

Caleb Connolly Nov. 24, 2024, 7:17 p.m. UTC 
Implement socinfo support to fetch the serial number if available.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
---
 drivers/soc/qcom/smem.c | 25 +++++++++++++++++++++++++
 include/soc/qcom/smem.h |  1 +
 2 files changed, 26 insertions(+)
diff mbox series

Patch

diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c
index 5166f289dfb6..5570c5c907ad 100644
--- a/drivers/soc/qcom/smem.c
+++ b/drivers/soc/qcom/smem.c
@@ -13,8 +13,10 @@ 
 #include <linux/io.h>
 #include <linux/ioport.h>
 #include <linux/sizes.h>
 #include <soc/qcom/smem.h>
+#include <soc/qcom/socinfo.h>
+#include <env.h>
 
 /*
  * The Qualcomm shared memory system is a allocate only heap structure that
  * consists of one of more memory areas that can be accessed by the processors
@@ -982,8 +984,31 @@  static int qcom_smem_map_global(struct qcom_smem *smem, u32 size)
 
 	return 0;
 }
 
+int qcom_socinfo_init(void)
+{
+	struct socinfo *info;
+	size_t item_size;
+	char buf[32] = { 0 };
+
+	info = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_HW_SW_BUILD_ID,
+			     &item_size);
+	if (IS_ERR(info)) {
+		log_err("Couldn't find socinfo: %ld\n", PTR_ERR(info));
+		return PTR_ERR(info);
+	}
+
+	if (offsetof(struct socinfo, serial_num) <= item_size) {
+		snprintf(buf, sizeof(buf), "%u", le32_to_cpu(info->serial_num));
+		env_set("serial#", buf);
+	} else {
+		return -ENOENT;
+	}
+
+	return 0;
+}
+
 int qcom_smem_init(void)
 {
 	struct smem_header *header;
 	struct qcom_smem *smem;
diff --git a/include/soc/qcom/smem.h b/include/soc/qcom/smem.h
index a955db08c0f0..755003807dba 100644
--- a/include/soc/qcom/smem.h
+++ b/include/soc/qcom/smem.h
@@ -4,8 +4,9 @@ 
 
 #define QCOM_SMEM_HOST_ANY -1
 
 int qcom_smem_init(void);
+int qcom_socinfo_init(void);
 
 bool qcom_smem_is_available(void);
 int qcom_smem_alloc(unsigned host, unsigned item, size_t size);
 void *qcom_smem_get(unsigned host, unsigned item, size_t *size);