1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2020, Linaro Ltd.
15 #define SMEM_AARM_PARTITION_TABLE	9
16 #define SMEM_APPS			0
18 #define SMEM_FLASH_PART_MAGIC1		0x55ee73aa
19 #define SMEM_FLASH_PART_MAGIC2		0xe35ebddb
20 #define SMEM_FLASH_PTABLE_V3		3
21 #define SMEM_FLASH_PTABLE_V4		4
22 #define SMEM_FLASH_PTABLE_MAX_PARTS_V3	16
23 #define SMEM_FLASH_PTABLE_MAX_PARTS_V4	48
24 #define SMEM_FLASH_PTABLE_HDR_LEN	(4 * sizeof(u32))
25 #define SMEM_FLASH_PTABLE_NAME_SIZE	16
28  * struct smem_flash_pentry - SMEM Flash partition entry
29  * @name: Name of the partition
35 	char name[SMEM_FLASH_PTABLE_NAME_SIZE];  member
42  * struct smem_flash_ptable - SMEM Flash partition table
66 	char *name, *c;  in parse_qcomsmem_part()  local
69 			&& mtd->type == MTD_NORFLASH) {  in parse_qcomsmem_part()
71 				mtd->name);  in parse_qcomsmem_part()
72 		return -EINVAL;  in parse_qcomsmem_part()
78 		if (PTR_ERR(ptable) != -EPROBE_DEFER)  in parse_qcomsmem_part()
84 	if (le32_to_cpu(ptable->magic1) != SMEM_FLASH_PART_MAGIC1 ||  in parse_qcomsmem_part()
85 	    le32_to_cpu(ptable->magic2) != SMEM_FLASH_PART_MAGIC2) {  in parse_qcomsmem_part()
87 		return -EINVAL;  in parse_qcomsmem_part()
91 	tmpparts = le32_to_cpu(ptable->numparts);  in parse_qcomsmem_part()
94 		return -EINVAL;  in parse_qcomsmem_part()
98 	if (le32_to_cpu(ptable->version) <= SMEM_FLASH_PTABLE_V3) {  in parse_qcomsmem_part()
101 	} else if (le32_to_cpu(ptable->version) == SMEM_FLASH_PTABLE_V4) {  in parse_qcomsmem_part()
105 		pr_err("Unknown ptable version (%d)", le32_to_cpu(ptable->version));  in parse_qcomsmem_part()
106 		return -EINVAL;  in parse_qcomsmem_part()
121 		pentry = &ptable->pentry[i];  in parse_qcomsmem_part()
122 		if (pentry->name[0] != '\0')  in parse_qcomsmem_part()
128 		return -ENOMEM;  in parse_qcomsmem_part()
131 		pentry = &ptable->pentry[i];  in parse_qcomsmem_part()
132 		if (pentry->name[0] == '\0')  in parse_qcomsmem_part()
135 		name = kstrdup(pentry->name, GFP_KERNEL);  in parse_qcomsmem_part()
136 		if (!name) {  in parse_qcomsmem_part()
137 			ret = -ENOMEM;  in parse_qcomsmem_part()
141 		/* Convert name to lower case */  in parse_qcomsmem_part()
142 		for (c = name; *c != '\0'; c++)  in parse_qcomsmem_part()
143 			*c = tolower(*c);  in parse_qcomsmem_part()
145 		parts[j].name = name;  in parse_qcomsmem_part()
146 		parts[j].offset = le32_to_cpu(pentry->offset) * mtd->erasesize;  in parse_qcomsmem_part()
147 		parts[j].mask_flags = pentry->attr;  in parse_qcomsmem_part()
148 		parts[j].size = le32_to_cpu(pentry->length) * mtd->erasesize;  in parse_qcomsmem_part()
150 			 i, pentry->name, le32_to_cpu(pentry->offset),  in parse_qcomsmem_part()
151 			 le32_to_cpu(pentry->length), pentry->attr);  in parse_qcomsmem_part()
156 		 le32_to_cpu(ptable->version), tmpparts);  in parse_qcomsmem_part()
162 	while (--j >= 0)  in parse_qcomsmem_part()
163 		kfree(parts[j].name);  in parse_qcomsmem_part()
176 		kfree(pparts[i].name);  in parse_qcomsmem_cleanup()
182 	{ .compatible = "qcom,smem-part" },
190 	.name = "qcomsmem",