git.openwrt.org Git - openwrt/openwrt.git/blob

   1 From 18dd1ef9417d0880f2f492b55bd4d9ede499f137 Mon Sep 17 00:00:00 2001
   2 From: Weijie Gao <weijie.gao@mediatek.com>
   3 Date: Fri, 20 May 2022 11:24:10 +0800
   4 Subject: [PATCH 24/25] tools: mtk_image: add support for MT7621 NAND images
   5
   6 The BootROM of MT7621 requires a image header for SPL to record its size
   7 and load address when booting from NAND.
   8
   9 To create such an image, one can use the following command line:
  10 mkimage -T mtk_image -a 0x80200000 -e 0x80200000 -n "mt7621=1"
  11 -d u-boot-spl-ddr.bin u-boot-spl-ddr.img
  12
  13 Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
  14 Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
  15 ---
  16  tools/mtk_image.c | 182 ++++++++++++++++++++++++++++++++++++++++++++++
  17  tools/mtk_image.h |  24 ++++++
  18  2 files changed, 206 insertions(+)
  19
  20 diff --git a/tools/mtk_image.c b/tools/mtk_image.c
  21 index 418c5fd54b..de5ce4d964 100644
  22 --- a/tools/mtk_image.c
  23 +++ b/tools/mtk_image.c
  24 @@ -6,7 +6,9 @@
  25   * Author: Weijie Gao <weijie.gao@mediatek.com>
  26   */
  27
  28 +#include <time.h>
  29  #include <image.h>
  30 +#include <u-boot/crc.h>
  31  #include <u-boot/sha256.h>
  32  #include "imagetool.h"
  33  #include "mtk_image.h"
  34 @@ -251,17 +253,45 @@ static uint32_t img_size;
  35  static enum brlyt_img_type hdr_media;
  36  static uint32_t hdr_offset;
  37  static int use_lk_hdr;
  38 +static int use_mt7621_hdr;
  39  static bool is_arm64_image;
  40
  41  /* LK image name */
  42  static char lk_name[32] = "U-Boot";
  43
  44 +/* CRC32 normal table required by MT7621 image */
  45 +static uint32_t crc32tbl[256];
  46 +
  47  /* NAND header selected by user */
  48  static const union nand_boot_header *hdr_nand;
  49
  50  /* GFH header + 2 * 4KB pages of NAND */
  51  static char hdr_tmp[sizeof(struct gfh_header) + 0x2000];
  52
  53 +static uint32_t crc32_normal_cal(uint32_t crc, const void *data, size_t length,
  54 +                                const uint32_t *crc32c_table)
  55 +{
  56 +       const uint8_t *p = data;
  57 +
  58 +       while (length--)
  59 +               crc = crc32c_table[(uint8_t)((crc >> 24) ^ *p++)] ^ (crc << 8);
  60 +
  61 +       return crc;
  62 +}
  63 +
  64 +static void crc32_normal_init(uint32_t *crc32c_table, uint32_t poly)
  65 +{
  66 +       uint32_t v, i, j;
  67 +
  68 +       for (i = 0; i < 256; i++) {
  69 +               v = i << 24;
  70 +               for (j = 0; j < 8; j++)
  71 +                       v = (v << 1) ^ ((v & (1 << 31)) ? poly : 0);
  72 +
  73 +               crc32c_table[i] = v;
  74 +       }
  75 +}
  76 +
  77  static int mtk_image_check_image_types(uint8_t type)
  78  {
  79         if (type == IH_TYPE_MTKIMAGE)
  80 @@ -283,6 +313,7 @@ static int mtk_brom_parse_imagename(const char *imagename)
  81         static const char *hdr_offs = "";
  82         static const char *nandinfo = "";
  83         static const char *lk = "";
  84 +       static const char *mt7621 = "";
  85         static const char *arm64_param = "";
  86
  87         key = buf;
  88 @@ -332,6 +363,9 @@ static int mtk_brom_parse_imagename(const char *imagename)
  89                         if (!strcmp(key, "lk"))
  90                                 lk = val;
  91
  92 +                       if (!strcmp(key, "mt7621"))
  93 +                               mt7621 = val;
  94 +
  95                         if (!strcmp(key, "lkname"))
  96                                 snprintf(lk_name, sizeof(lk_name), "%s", val);
  97
  98 @@ -352,6 +386,13 @@ static int mtk_brom_parse_imagename(const char *imagename)
  99                 return 0;
 100         }
 101
 102 +       /* if user specified MT7621 image header, skip following checks */
 103 +       if (mt7621 && mt7621[0] == '1') {
 104 +               use_mt7621_hdr = 1;
 105 +               free(buf);
 106 +               return 0;
 107 +       }
 108 +
 109         /* parse media type */
 110         for (i = 0; i < ARRAY_SIZE(brom_images); i++) {
 111                 if (!strcmp(brom_images[i].name, media)) {
 112 @@ -419,6 +460,13 @@ static int mtk_image_vrec_header(struct image_tool_params *params,
 113                 return 0;
 114         }
 115
 116 +       if (use_mt7621_hdr) {
 117 +               tparams->header_size = image_get_header_size();
 118 +               tparams->hdr = &hdr_tmp;
 119 +               memset(&hdr_tmp, 0, tparams->header_size);
 120 +               return 0;
 121 +       }
 122 +
 123         if (hdr_media == BRLYT_TYPE_NAND || hdr_media == BRLYT_TYPE_SNAND)
 124                 tparams->header_size = 2 * le16_to_cpu(hdr_nand->pagesize);
 125         else
 126 @@ -579,9 +627,90 @@ static int mtk_image_verify_nand_header(const uint8_t *ptr, int print)
 127         return 0;
 128  }
 129
 130 +static uint32_t crc32be_cal(const void *data, size_t length)
 131 +{
 132 +       uint32_t crc = 0;
 133 +       uint8_t c;
 134 +
 135 +       if (crc32tbl[1] != MT7621_IH_CRC_POLYNOMIAL)
 136 +               crc32_normal_init(crc32tbl, MT7621_IH_CRC_POLYNOMIAL);
 137 +
 138 +       crc = crc32_normal_cal(crc, data, length, crc32tbl);
 139 +
 140 +       for (; length; length >>= 8) {
 141 +               c = length & 0xff;
 142 +               crc = crc32_normal_cal(crc, &c, 1, crc32tbl);
 143 +       }
 144 +
 145 +       return ~crc;
 146 +}
 147 +
 148 +static int mtk_image_verify_mt7621_header(const uint8_t *ptr, int print)
 149 +{
 150 +       const image_header_t *hdr = (const image_header_t *)ptr;
 151 +       struct mt7621_nand_header *nhdr;
 152 +       uint32_t spl_size, crcval;
 153 +       image_header_t header;
 154 +       int ret;
 155 +
 156 +       spl_size = image_get_size(hdr);
 157 +
 158 +       if (spl_size > img_size) {
 159 +               if (print)
 160 +                       printf("Incomplete SPL image\n");
 161 +               return -1;
 162 +       }
 163 +
 164 +       ret = image_check_hcrc(hdr);
 165 +       if (!ret) {
 166 +               if (print)
 167 +                       printf("Bad header CRC\n");
 168 +               return -1;
 169 +       }
 170 +
 171 +       ret = image_check_dcrc(hdr);
 172 +       if (!ret) {
 173 +               if (print)
 174 +                       printf("Bad data CRC\n");
 175 +               return -1;
 176 +       }
 177 +
 178 +       /* Copy header so we can blank CRC field for re-calculation */
 179 +       memmove(&header, hdr, image_get_header_size());
 180 +       image_set_hcrc(&header, 0);
 181 +
 182 +       nhdr = (struct mt7621_nand_header *)header.ih_name;
 183 +       crcval = be32_to_cpu(nhdr->crc);
 184 +       nhdr->crc = 0;
 185 +
 186 +       if (crcval != crc32be_cal(&header, image_get_header_size())) {
 187 +               if (print)
 188 +                       printf("Bad NAND header CRC\n");
 189 +               return -1;
 190 +       }
 191 +
 192 +       if (print) {
 193 +               printf("Load Address: %08x\n", image_get_load(hdr));
 194 +
 195 +               printf("Image Name:   %.*s\n", MT7621_IH_NMLEN,
 196 +                      image_get_name(hdr));
 197 +
 198 +               if (IMAGE_ENABLE_TIMESTAMP) {
 199 +                       printf("Created:      ");
 200 +                       genimg_print_time((time_t)image_get_time(hdr));
 201 +               }
 202 +
 203 +               printf("Data Size:    ");
 204 +               genimg_print_size(image_get_data_size(hdr));
 205 +       }
 206 +
 207 +       return 0;
 208 +}
 209 +
 210  static int mtk_image_verify_header(unsigned char *ptr, int image_size,
 211                                    struct image_tool_params *params)
 212  {
 213 +       image_header_t *hdr = (image_header_t *)ptr;
 214         union lk_hdr *lk = (union lk_hdr *)ptr;
 215
 216         /* nothing to verify for LK image header */
 217 @@ -590,6 +719,9 @@ static int mtk_image_verify_header(unsigned char *ptr, int image_size,
 218
 219         img_size = image_size;
 220
 221 +       if (image_get_magic(hdr) == IH_MAGIC)
 222 +               return mtk_image_verify_mt7621_header(ptr, 0);
 223 +
 224         if (!strcmp((char *)ptr, NAND_BOOT_NAME))
 225                 return mtk_image_verify_nand_header(ptr, 0);
 226         else
 227 @@ -600,6 +732,7 @@ static int mtk_image_verify_header(unsigned char *ptr, int image_size,
 228
 229  static void mtk_image_print_header(const void *ptr)
 230  {
 231 +       image_header_t *hdr = (image_header_t *)ptr;
 232         union lk_hdr *lk = (union lk_hdr *)ptr;
 233
 234         if (le32_to_cpu(lk->magic) == LK_PART_MAGIC) {
 235 @@ -610,6 +743,11 @@ static void mtk_image_print_header(const void *ptr)
 236
 237         printf("Image Type:   MediaTek BootROM Loadable Image\n");
 238
 239 +       if (image_get_magic(hdr) == IH_MAGIC) {
 240 +               mtk_image_verify_mt7621_header(ptr, 1);
 241 +               return;
 242 +       }
 243 +
 244         if (!strcmp((char *)ptr, NAND_BOOT_NAME))
 245                 mtk_image_verify_nand_header(ptr, 1);
 246         else
 247 @@ -773,6 +911,45 @@ static void mtk_image_set_nand_header(void *ptr, off_t filesize,
 248                  filesize - 2 * le16_to_cpu(hdr_nand->pagesize) - SHA256_SUM_LEN);
 249  }
 250
 251 +static void mtk_image_set_mt7621_header(void *ptr, off_t filesize,
 252 +                                       uint32_t loadaddr)
 253 +{
 254 +       image_header_t *hdr = (image_header_t *)ptr;
 255 +       struct mt7621_stage1_header *shdr;
 256 +       struct mt7621_nand_header *nhdr;
 257 +       uint32_t datasize, crcval;
 258 +
 259 +       datasize = filesize - image_get_header_size();
 260 +       nhdr = (struct mt7621_nand_header *)hdr->ih_name;
 261 +       shdr = (struct mt7621_stage1_header *)(ptr + image_get_header_size());
 262 +
 263 +       shdr->ep = cpu_to_be32(loadaddr);
 264 +       shdr->stage_size = cpu_to_be32(datasize);
 265 +
 266 +       image_set_magic(hdr, IH_MAGIC);
 267 +       image_set_time(hdr, time(NULL));
 268 +       image_set_size(hdr, datasize);
 269 +       image_set_load(hdr, loadaddr);
 270 +       image_set_ep(hdr, loadaddr);
 271 +       image_set_os(hdr, IH_OS_U_BOOT);
 272 +       image_set_arch(hdr, IH_ARCH_MIPS);
 273 +       image_set_type(hdr, IH_TYPE_STANDALONE);
 274 +       image_set_comp(hdr, IH_COMP_NONE);
 275 +
 276 +       crcval = crc32(0, (uint8_t *)shdr, datasize);
 277 +       image_set_dcrc(hdr, crcval);
 278 +
 279 +       strncpy(nhdr->ih_name, "MT7621 NAND", MT7621_IH_NMLEN);
 280 +
 281 +       nhdr->ih_stage_offset = cpu_to_be32(image_get_header_size());
 282 +
 283 +       crcval = crc32be_cal(hdr, image_get_header_size());
 284 +       nhdr->crc = cpu_to_be32(crcval);
 285 +
 286 +       crcval = crc32(0, (uint8_t *)hdr, image_get_header_size());
 287 +       image_set_hcrc(hdr, crcval);
 288 +}
 289 +
 290  static void mtk_image_set_header(void *ptr, struct stat *sbuf, int ifd,
 291                                  struct image_tool_params *params)
 292  {
 293 @@ -791,6 +968,11 @@ static void mtk_image_set_header(void *ptr, struct stat *sbuf, int ifd,
 294         img_gen = true;
 295         img_size = sbuf->st_size;
 296
 297 +       if (use_mt7621_hdr) {
 298 +               mtk_image_set_mt7621_header(ptr, sbuf->st_size, params->addr);
 299 +               return;
 300 +       }
 301 +
 302         if (hdr_media == BRLYT_TYPE_NAND || hdr_media == BRLYT_TYPE_SNAND)
 303                 mtk_image_set_nand_header(ptr, sbuf->st_size, params->addr);
 304         else
 305 diff --git a/tools/mtk_image.h b/tools/mtk_image.h
 306 index 7dda71ce88..d868545a33 100644
 307 --- a/tools/mtk_image.h
 308 +++ b/tools/mtk_image.h
 309 @@ -200,4 +200,28 @@ union lk_hdr {
 310
 311  #define LK_PART_MAGIC          0x58881688
 312
 313 +/* MT7621 NAND SPL image header */
 314 +
 315 +#define MT7621_IH_NMLEN                        12
 316 +#define MT7621_IH_CRC_POLYNOMIAL       0x04c11db7
 317 +
 318 +struct mt7621_nand_header {
 319 +       char ih_name[MT7621_IH_NMLEN];
 320 +       uint32_t nand_ac_timing;
 321 +       uint32_t ih_stage_offset;
 322 +       uint32_t ih_bootloader_offset;
 323 +       uint32_t nand_info_1_data;
 324 +       uint32_t crc;
 325 +};
 326 +
 327 +struct mt7621_stage1_header {
 328 +       uint32_t jump_insn[2];
 329 +       uint32_t ep;
 330 +       uint32_t stage_size;
 331 +       uint32_t has_stage2;
 332 +       uint32_t next_ep;
 333 +       uint32_t next_size;
 334 +       uint32_t next_offset;
 335 +};
 336 +
 337  #endif /* _MTK_IMAGE_H */
 338 --
 339 2.36.1
 340