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