From 8d071ca7c9a1b0ad91d2474a8b7ba5c83fb40b5a Mon Sep 17 00:00:00 2001
From: "Kate J. Temkin" <k@ktemkin.com>
Date: Sun, 6 May 2018 22:47:36 -0600
Subject: [PATCH] fusee: fix boot partition selection

---
 fusee/fusee-primary/src/sdmmc.c | 2 +-
 fusee/fusee-primary/src/sdmmc.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fusee/fusee-primary/src/sdmmc.c b/fusee/fusee-primary/src/sdmmc.c
index cc1ab9011..38029942f 100644
--- a/fusee/fusee-primary/src/sdmmc.c
+++ b/fusee/fusee-primary/src/sdmmc.c
@@ -2251,7 +2251,7 @@ int sdmmc_select_partition(struct mmc *mmc, enum sdmmc_partition partition)
 
     // Set the PARTITION_CONFIG register to select the active partition.
     mmc_print(mmc, "switching to partition %d", partition);
-    rc = mmc->switch_mode(mmc, MMC_SWITCH_EXTCSD_NORMAL, MMC_PARTITION_CONFIG, argument, 0);
+    rc = mmc->switch_mode(mmc, MMC_SWITCH_MODE_WRITE_BYTE, MMC_PARTITION_CONFIG, argument, 0);
     if (rc) {
         mmc_print(mmc, "failed to select partition %d (%02x, rc=%d)", partition, argument, rc);
     }
diff --git a/fusee/fusee-primary/src/sdmmc.h b/fusee/fusee-primary/src/sdmmc.h
index 7f0f483f5..a6ff51546 100644
--- a/fusee/fusee-primary/src/sdmmc.h
+++ b/fusee/fusee-primary/src/sdmmc.h
@@ -105,7 +105,7 @@ enum sdmmc_switch_access_mode {
  * Offsets into the SWITCH_MODE argument.
  */
 enum sdmmc_switch_argument_offsets {
-    MMC_SWITCH_VALUE_SHIFT = 0,
+    MMC_SWITCH_VALUE_SHIFT = 8,
     MMC_SWITCH_FIELD_SHIFT = 16,
     MMC_SWITCH_ACCESS_MODE_SHIFT = 24,
 };