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