stm32mp1: add support for virtual partition read

[oweals/u-boot.git] / board / st / stm32mp1 / stm32mp1.c

diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 23f36e8f4268fde3f6ca2c34c4c74629d4940a12..4ed2d8884964bfe00ebc75232848ffb6d0f15da2 100644 (file)
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -992,9 +992,92 @@ void set_dfu_alt_info(char *interface, char *devstr)
        if (!IS_ERR_OR_NULL(mtd))
                board_get_alt_info("spi-nand0", buf);
 
+#ifdef CONFIG_DFU_VIRT
+       strncat(buf, "&virt 0=OTP", DFU_ALT_BUF_LEN);
+
+       if (IS_ENABLED(CONFIG_PMIC_STPMIC1))
+               strncat(buf, "&virt 1=PMIC", DFU_ALT_BUF_LEN);
+#endif
+
        env_set("dfu_alt_info", buf);
        puts("DFU alt info setting: done\n");
 }
+
+#if CONFIG_IS_ENABLED(DFU_VIRT)
+#include <dfu.h>
+#include <power/stpmic1.h>
+
+int dfu_otp_read(u64 offset, u8 *buffer, long *size)
+{
+       struct udevice *dev;
+       int ret;
+
+       ret = uclass_get_device_by_driver(UCLASS_MISC,
+                                         DM_GET_DRIVER(stm32mp_bsec),
+                                         &dev);
+       if (ret)
+               return ret;
+
+       ret = misc_read(dev, offset + STM32_BSEC_OTP_OFFSET, buffer, *size);
+       if (ret >= 0) {
+               *size = ret;
+               ret = 0;
+       }
+
+       return 0;
+}
+
+int dfu_pmic_read(u64 offset, u8 *buffer, long *size)
+{
+       int ret;
+#ifdef CONFIG_PMIC_STPMIC1
+       struct udevice *dev;
+
+       ret = uclass_get_device_by_driver(UCLASS_MISC,
+                                         DM_GET_DRIVER(stpmic1_nvm),
+                                         &dev);
+       if (ret)
+               return ret;
+
+       ret = misc_read(dev, 0xF8 + offset, buffer, *size);
+       if (ret >= 0) {
+               *size = ret;
+               ret = 0;
+       }
+       if (ret == -EACCES) {
+               *size = 0;
+               ret = 0;
+       }
+#else
+       pr_err("PMIC update not supported");
+       ret = -EOPNOTSUPP;
+#endif
+
+       return ret;
+}
+
+int dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset,
+                        void *buf, long *len)
+{
+       switch (dfu->data.virt.dev_num) {
+       case 0x0:
+               return dfu_otp_read(offset, buf, len);
+       case 0x1:
+               return dfu_pmic_read(offset, buf, len);
+       }
+       *len = 0;
+       return 0;
+}
+
+int __weak dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size)
+{
+       *size = SZ_1K;
+
+       return 0;
+}
+
+#endif
+
 #endif
 
 static void board_copro_image_process(ulong fw_image, size_t fw_size)