board/st/common/stm32mp_dfu.c

   1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2020, STMicroelectronics - All Rights Reserved
   4  */
   5
   6 #include <common.h>
   7 #include <blk.h>
   8 #include <dm.h>
   9 #include <dfu.h>
  10 #include <env.h>
  11 #include <log.h>
  12 #include <memalign.h>
  13 #include <misc.h>
  14 #include <mtd.h>
  15 #include <mtd_node.h>
  16 #include <asm/arch/stm32prog.h>
  17
  18 #define DFU_ALT_BUF_LEN SZ_1K
  19
  20 static void board_get_alt_info_mmc(struct udevice *dev, char *buf)
  21 {
  22         struct disk_partition info;
  23         int p, len, devnum;
  24         bool first = true;
  25         const char *name;
  26         struct mmc *mmc;
  27         struct blk_desc *desc;
  28
  29         mmc = mmc_get_mmc_dev(dev);
  30         if (!mmc)
  31                 return;
  32
  33         if (mmc_init(mmc))
  34                 return;
  35
  36         desc = mmc_get_blk_desc(mmc);
  37         if (!desc)
  38                 return;
  39
  40         name = blk_get_if_type_name(desc->if_type);
  41         devnum = desc->devnum;
  42         len = strlen(buf);
  43
  44         if (buf[0] != '\0')
  45                 len += snprintf(buf + len,
  46                                 DFU_ALT_BUF_LEN - len, "&");
  47         len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
  48                          "%s %d=", name, devnum);
  49
  50         if (IS_MMC(mmc) && mmc->capacity_boot) {
  51                 len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
  52                                 "%s%d_boot1 raw 0x0 0x%llx mmcpart 1;",
  53                                 name, devnum, mmc->capacity_boot);
  54                 len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
  55                                 "%s%d_boot2 raw 0x0 0x%llx mmcpart 2",
  56                                 name, devnum, mmc->capacity_boot);
  57                 first = false;
  58         }
  59
  60         for (p = 1; p < MAX_SEARCH_PARTITIONS; p++) {
  61                 if (part_get_info(desc, p, &info))
  62                         continue;
  63                 if (!first)
  64                         len += snprintf(buf + len, DFU_ALT_BUF_LEN - len, ";");
  65                 first = false;
  66                 len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
  67                                 "%s%d_%s part %d %d",
  68                                 name, devnum, info.name, devnum, p);
  69         }
  70 }
  71
  72 static void board_get_alt_info_mtd(struct mtd_info *mtd, char *buf)
  73 {
  74         struct mtd_info *part;
  75         bool first = true;
  76         const char *name;
  77         int len, partnum = 0;
  78
  79         name = mtd->name;
  80         len = strlen(buf);
  81
  82         if (buf[0] != '\0')
  83                 len += snprintf(buf + len, DFU_ALT_BUF_LEN - len, "&");
  84         len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
  85                         "mtd %s=", name);
  86
  87         len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
  88                         "%s raw 0x0 0x%llx ",
  89                         name, mtd->size);
  90
  91         list_for_each_entry(part, &mtd->partitions, node) {
  92                 partnum++;
  93                 if (!first)
  94                         len += snprintf(buf + len, DFU_ALT_BUF_LEN - len, ";");
  95                 first = false;
  96
  97                 len += snprintf(buf + len, DFU_ALT_BUF_LEN - len,
  98                                 "%s_%s part %d",
  99                                 name, part->name, partnum);
 100         }
 101 }
 102
 103 void set_dfu_alt_info(char *interface, char *devstr)
 104 {
 105         struct udevice *dev;
 106         struct mtd_info *mtd;
 107
 108         ALLOC_CACHE_ALIGN_BUFFER(char, buf, DFU_ALT_BUF_LEN);
 109
 110         if (env_get("dfu_alt_info"))
 111                 return;
 112
 113         memset(buf, 0, sizeof(buf));
 114
 115         snprintf(buf, DFU_ALT_BUF_LEN,
 116                  "ram 0=%s", CONFIG_DFU_ALT_RAM0);
 117
 118         if (CONFIG_IS_ENABLED(MMC)) {
 119                 if (!uclass_get_device(UCLASS_MMC, 0, &dev))
 120                         board_get_alt_info_mmc(dev, buf);
 121
 122                 if (!uclass_get_device(UCLASS_MMC, 1, &dev))
 123                         board_get_alt_info_mmc(dev, buf);
 124         }
 125
 126         if (CONFIG_IS_ENABLED(MTD)) {
 127                 /* probe all MTD devices */
 128                 mtd_probe_devices();
 129
 130                 /* probe SPI flash device on a bus */
 131                 if (!uclass_get_device(UCLASS_SPI_FLASH, 0, &dev)) {
 132                         mtd = get_mtd_device_nm("nor0");
 133                         if (!IS_ERR_OR_NULL(mtd))
 134                                 board_get_alt_info_mtd(mtd, buf);
 135                 }
 136
 137                 mtd = get_mtd_device_nm("nand0");
 138                 if (!IS_ERR_OR_NULL(mtd))
 139                         board_get_alt_info_mtd(mtd, buf);
 140
 141                 mtd = get_mtd_device_nm("spi-nand0");
 142                 if (!IS_ERR_OR_NULL(mtd))
 143                         board_get_alt_info_mtd(mtd, buf);
 144         }
 145
 146         if (IS_ENABLED(CONFIG_DFU_VIRT) &&
 147             IS_ENABLED(CMD_STM32PROG_USB)) {
 148                 strncat(buf, "&virt 0=OTP", DFU_ALT_BUF_LEN);
 149
 150                 if (IS_ENABLED(CONFIG_PMIC_STPMIC1))
 151                         strncat(buf, "&virt 1=PMIC", DFU_ALT_BUF_LEN);
 152         }
 153
 154         env_set("dfu_alt_info", buf);
 155         puts("DFU alt info setting: done\n");
 156 }
 157
 158 #if CONFIG_IS_ENABLED(DFU_VIRT)
 159 #include <dfu.h>
 160 #include <power/stpmic1.h>
 161
 162 static int dfu_otp_read(u64 offset, u8 *buffer, long *size)
 163 {
 164         struct udevice *dev;
 165         int ret;
 166
 167         ret = uclass_get_device_by_driver(UCLASS_MISC,
 168                                           DM_DRIVER_GET(stm32mp_bsec),
 169                                           &dev);
 170         if (ret)
 171                 return ret;
 172
 173         ret = misc_read(dev, offset + STM32_BSEC_OTP_OFFSET, buffer, *size);
 174         if (ret >= 0) {
 175                 *size = ret;
 176                 ret = 0;
 177         }
 178
 179         return 0;
 180 }
 181
 182 static int dfu_pmic_read(u64 offset, u8 *buffer, long *size)
 183 {
 184         int ret;
 185 #ifdef CONFIG_PMIC_STPMIC1
 186         struct udevice *dev;
 187
 188         ret = uclass_get_device_by_driver(UCLASS_MISC,
 189                                           DM_DRIVER_GET(stpmic1_nvm),
 190                                           &dev);
 191         if (ret)
 192                 return ret;
 193
 194         ret = misc_read(dev, 0xF8 + offset, buffer, *size);
 195         if (ret >= 0) {
 196                 *size = ret;
 197                 ret = 0;
 198         }
 199         if (ret == -EACCES) {
 200                 *size = 0;
 201                 ret = 0;
 202         }
 203 #else
 204         log_err("PMIC update not supported");
 205         ret = -EOPNOTSUPP;
 206 #endif
 207
 208         return ret;
 209 }
 210
 211 int dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset,
 212                          void *buf, long *len)
 213 {
 214         switch (dfu->data.virt.dev_num) {
 215         case 0x0:
 216                 return dfu_otp_read(offset, buf, len);
 217         case 0x1:
 218                 return dfu_pmic_read(offset, buf, len);
 219         }
 220
 221         if (IS_ENABLED(CONFIG_CMD_STM32PROG_USB) &&
 222             dfu->data.virt.dev_num >= STM32PROG_VIRT_FIRST_DEV_NUM)
 223                 return stm32prog_read_medium_virt(dfu, offset, buf, len);
 224
 225         *len = 0;
 226         return 0;
 227 }
 228
 229 int dfu_write_medium_virt(struct dfu_entity *dfu, u64 offset,
 230                           void *buf, long *len)
 231 {
 232         if (IS_ENABLED(CONFIG_CMD_STM32PROG_USB) &&
 233             dfu->data.virt.dev_num >= STM32PROG_VIRT_FIRST_DEV_NUM)
 234                 return stm32prog_write_medium_virt(dfu, offset, buf, len);
 235
 236         return -EOPNOTSUPP;
 237 }
 238
 239 int __weak dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size)
 240 {
 241         if (IS_ENABLED(CONFIG_CMD_STM32PROG_USB) &&
 242             dfu->data.virt.dev_num >= STM32PROG_VIRT_FIRST_DEV_NUM)
 243                 return stm32prog_get_medium_size_virt(dfu, size);
 244
 245         *size = SZ_1K;
 246
 247         return 0;
 248 }
 249
 250 #endif