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