firmware/smccc/soc_id.c

1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/arm-smccc.h>
18  * As per the SMC Calling Convention specification v1.2 (ARM DEN 0028C)
19  * Section 7.4 SMCCC_ARCH_SOC_ID bits[23:16] are JEP-106 identification
59 	 * specification introduces an optional "name" string  in smccc_soc_name_init()
69 		 * Copy res.a1..res.a17 to the smccc_soc_id_name string  in smccc_soc_name_init()
70 		 * 8 bytes at a time.  As per Issue 1.6 of the Arm SMC  in smccc_soc_name_init()
71 		 * Calling Convention, the string will be NUL terminated  in smccc_soc_name_init()
72 		 * and padded, from the end of the string to the end of the  in smccc_soc_name_init()
131 		return -EINVAL;  in smccc_soc_init()
137 		return -EINVAL;  in smccc_soc_init()
142 		return -ENOMEM;  in smccc_soc_init()
151 	soc_dev_attr->soc_id = soc_id_str;  in smccc_soc_init()
152 	soc_dev_attr->revision = soc_id_rev_str;  in smccc_soc_init()
153 	soc_dev_attr->family = soc_id_jep106_id_str;  in smccc_soc_init()
154 	soc_dev_attr->machine = smccc_soc_name_init();  in smccc_soc_init()
162 	pr_info("ID = %s Revision = %s\n", soc_dev_attr->soc_id,  in smccc_soc_init()
163 		soc_dev_attr->revision);  in smccc_soc_init()