1 // SPDX-License-Identifier: GPL-2.0-only
3  * Qualcomm SMEM NAND flash partition parser
13 #include <linux/soc/qcom/smem.h>
28  * struct smem_flash_pentry - SMEM Flash partition entry
42  * struct smem_flash_ptable - SMEM Flash partition table
69 			&& mtd->type == MTD_NORFLASH) {  in parse_qcomsmem_part()
70 		pr_err("%s: SMEM partition parser is incompatible with 4K sectors\n",  in parse_qcomsmem_part()
71 				mtd->name);  in parse_qcomsmem_part()
72 		return -EINVAL;  in parse_qcomsmem_part()
75 	pr_debug("Parsing partition table info from SMEM\n");  in parse_qcomsmem_part()
83 	if (le32_to_cpu(ptable->magic1) != SMEM_FLASH_PART_MAGIC1 ||  in parse_qcomsmem_part()
84 	    le32_to_cpu(ptable->magic2) != SMEM_FLASH_PART_MAGIC2) {  in parse_qcomsmem_part()
86 		return -EINVAL;  in parse_qcomsmem_part()
90 	numparts = le32_to_cpu(ptable->numparts);  in parse_qcomsmem_part()
93 		return -EINVAL;  in parse_qcomsmem_part()
97 	if (le32_to_cpu(ptable->version) <= SMEM_FLASH_PTABLE_V3) {  in parse_qcomsmem_part()
100 	} else if (le32_to_cpu(ptable->version) == SMEM_FLASH_PTABLE_V4) {  in parse_qcomsmem_part()
104 		pr_err("Unknown ptable version (%d)", le32_to_cpu(ptable->version));  in parse_qcomsmem_part()
105 		return -EINVAL;  in parse_qcomsmem_part()
121 		return -ENOMEM;  in parse_qcomsmem_part()
124 		pentry = &ptable->pentry[i];  in parse_qcomsmem_part()
125 		if (pentry->name[0] == '\0')  in parse_qcomsmem_part()
128 		name = kstrdup(pentry->name, GFP_KERNEL);  in parse_qcomsmem_part()
130 			ret = -ENOMEM;  in parse_qcomsmem_part()
139 		parts[i].offset = le32_to_cpu(pentry->offset) * mtd->erasesize;  in parse_qcomsmem_part()
140 		parts[i].mask_flags = pentry->attr;  in parse_qcomsmem_part()
141 		parts[i].size = le32_to_cpu(pentry->length) * mtd->erasesize;  in parse_qcomsmem_part()
143 			 i, pentry->name, le32_to_cpu(pentry->offset),  in parse_qcomsmem_part()
144 			 le32_to_cpu(pentry->length), pentry->attr);  in parse_qcomsmem_part()
147 	pr_debug("SMEM partition table found: ver: %d len: %d\n",  in parse_qcomsmem_part()
148 		 le32_to_cpu(ptable->version), numparts);  in parse_qcomsmem_part()
154 	while (--i >= 0)  in parse_qcomsmem_part()
172 	{ .compatible = "qcom,smem-part" },
187 MODULE_DESCRIPTION("Qualcomm SMEM NAND flash partition parser");