1 /* 2 * (C) Copyright 2017 rkparm Electronics Co., Ltd 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <malloc.h> 9 10 #ifdef HAVE_BLOCK_DEVICE 11 #define RK_PARAM_OFFSET 0x2000 12 #define MAX_PARAM_SIZE (1024 * 64) 13 14 struct rkparm_param { 15 u32 tag; 16 u32 length; 17 char params[1]; 18 u32 crc; 19 }; 20 21 struct rkparm_part { 22 char name[PART_NAME_LEN]; 23 unsigned long start; 24 unsigned long size; 25 struct list_head node; 26 }; 27 28 29 static LIST_HEAD(parts_head); 30 static int dev_num = -1; 31 32 static int rkparm_param_parse(char *param, struct list_head *parts_head, 33 struct blk_desc *dev_desc) 34 { 35 struct rkparm_part *part; 36 const char *cmdline = strstr(param, "CMDLINE:"); 37 const char *blkdev_parts; 38 char *cmdline_end, *next, *pend; 39 int len, offset = 0; 40 unsigned long size, start; 41 42 if (!cmdline) { 43 printf("invalid parameter\n"); 44 return -EINVAL; 45 } 46 47 blkdev_parts = strstr(cmdline, "mtdparts"); 48 next = strchr(blkdev_parts, ':'); 49 cmdline_end = strstr(cmdline, "\n"); /* end by '\n' */ 50 *cmdline_end = '\0'; 51 /* skip "CMDLINE:" */ 52 env_update("bootargs", cmdline + strlen("CMDLINE:")); 53 54 /* 55 * Initrd fixup: remove unused "initrd=0x...,0x...", this for 56 * compatible with legacy parameter.txt 57 */ 58 env_delete("bootargs", "initrd="); 59 60 INIT_LIST_HEAD(parts_head); 61 while (next) { 62 /* Skip ':' and ',' */ 63 next++; 64 if (*next == '-') { 65 size = (~0UL); 66 next++; 67 } else { 68 size = simple_strtoul(next, &next, 16); 69 } 70 /* Skip '@' */ 71 next++; 72 start = simple_strtoul(next, &next, 16); 73 next++; 74 pend = strchr(next, ')'); 75 if (!pend) 76 break; 77 len = min_t(int, pend - next, PART_NAME_LEN); 78 part = malloc(sizeof(*part)); 79 if (!part) { 80 printf("out of memory\n"); 81 break; 82 } 83 if (dev_desc->if_type != IF_TYPE_RKNAND) 84 offset = RK_PARAM_OFFSET; 85 part->start = start + offset; 86 /* Last partition use all remain space */ 87 if (size == (~0UL)) 88 size = dev_desc->lba - part->start; 89 part->size = size; 90 strncpy(part->name, next, len); 91 part->name[len] = '\0'; 92 list_add_tail(&part->node, parts_head); 93 next = strchr(next, ','); 94 } 95 96 dev_num = ((dev_desc->if_type << 8) + dev_desc->devnum); 97 98 return 0; 99 } 100 101 static int rkparm_init_param(struct blk_desc *dev_desc, 102 struct list_head *parts_head) 103 { 104 struct rkparm_param *param; 105 int offset = 0; 106 int ret; 107 108 param = memalign(ARCH_DMA_MINALIGN, MAX_PARAM_SIZE); 109 if (!param) { 110 printf("out of memory\n"); 111 return -ENOMEM; 112 } 113 114 if (dev_desc->if_type != IF_TYPE_RKNAND) 115 offset = RK_PARAM_OFFSET; 116 117 ret = blk_dread(dev_desc, offset, MAX_PARAM_SIZE >> 9, (ulong *)param); 118 if (ret != (MAX_PARAM_SIZE >> 9)) { 119 printf("%s param read fail\n", __func__); 120 return -EINVAL; 121 } 122 123 return rkparm_param_parse(param->params, parts_head, dev_desc); 124 125 } 126 127 static void part_print_rkparm(struct blk_desc *dev_desc) 128 { 129 int ret = 0; 130 struct list_head *node; 131 struct rkparm_part *p = NULL; 132 int i = 0; 133 134 if (list_empty(&parts_head) || 135 (dev_num != ((dev_desc->if_type << 8) + dev_desc->devnum))) 136 ret = rkparm_init_param(dev_desc, &parts_head); 137 138 if (ret) { 139 printf("%s Invalid rkparm parameter\n", __func__); 140 return; 141 } 142 143 printf("Part\tStart LBA\tSize\t\tName\n"); 144 list_for_each(node, &parts_head) { 145 p = list_entry(node, struct rkparm_part, node); 146 printf("%3d\t0x%08lx\t0x%08lx\t%s\n", (i++ + 1), 147 p->start, p->size, p->name); 148 } 149 150 151 return; 152 } 153 154 static int part_get_info_rkparm(struct blk_desc *dev_desc, int idx, 155 disk_partition_t *info) 156 { 157 struct list_head *node; 158 struct rkparm_part *p = NULL; 159 int part_num = 1; 160 int ret = 0; 161 162 if (idx < 1) { 163 printf("%s Invalid partition no.%d\n", __func__, idx); 164 return -EINVAL; 165 } 166 167 if (list_empty(&parts_head) || 168 (dev_num != ((dev_desc->if_type << 8) + dev_desc->devnum))) 169 ret = rkparm_init_param(dev_desc, &parts_head); 170 171 if (ret) { 172 printf("%s Invalid rkparm partition\n", __func__); 173 return -1; 174 } 175 176 list_for_each(node, &parts_head) { 177 p = list_entry(node, struct rkparm_part, node); 178 if (idx == part_num) 179 break; 180 part_num ++; 181 } 182 183 if (part_num > idx) { 184 printf("%s Invalid partition no.%d\n", __func__, idx); 185 return -EINVAL; 186 } 187 188 info->start = p->start; 189 info->size = p->size << 9; 190 info->blksz = dev_desc->blksz; 191 192 sprintf((char *)info->name, "%s", p->name); 193 strcpy((char *)info->type, "U-Boot"); 194 info->bootable = 0; 195 196 return 0; 197 } 198 199 static int part_test_rkparm(struct blk_desc *dev_desc) 200 { 201 int ret = 0; 202 203 if (list_empty(&parts_head) || 204 (dev_num != ((dev_desc->if_type << 8) + dev_desc->devnum))) 205 ret = rkparm_init_param(dev_desc, &parts_head); 206 if (ret) 207 ret = -1; 208 209 return ret; 210 } 211 /* 212 * Add an 'b_' prefix so it comes before 'dos' and after 'a_efi' in the linker 213 * list. We need to check EFI first, and then rkparm partition 214 */ 215 U_BOOT_PART_TYPE(b_rkparm) = { 216 .name = "RKPARM", 217 .part_type = PART_TYPE_RKPARM, 218 .max_entries = GPT_ENTRY_NUMBERS, 219 .get_info = part_get_info_ptr(part_get_info_rkparm), 220 .print = part_print_ptr(part_print_rkparm), 221 .test = part_test_rkparm, 222 }; 223 #endif 224