[PATCH V2 1/2] spl: mmc: Factor out eMMC boot partition selection code

[Marek Vasut]

Factor out eMMC boot partition selection code into
default_spl_mmc_emmc_boot_partition() function and implement
weak spl_mmc_emmc_boot_partition(), so that architecture or
board code can override the eMMC boot partition selection.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Faiz Abbas <faiz_abbas at ti.com>
Cc: Harald Seiler <hws at denx.de>
Cc: Lokesh Vutla <lokeshvutla at ti.com>
Cc: Simon Glass <sjg at chromium.org>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Ye Li <ye.li at nxp.com>
---
V2: Update comments
---
 common/spl/spl_mmc.c | 37 ++++++++++++++++++++++++-------------
 include/spl.h        | 23 +++++++++++++++++++++++
 2 files changed, 47 insertions(+), 13 deletions(-)

diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
index add2785b4e3..2377d0937d1 100644
--- a/common/spl/spl_mmc.c
+++ b/common/spl/spl_mmc.c
@@ -324,6 +324,29 @@ unsigned long __weak spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
 	return raw_sect;
 }
 
+int default_spl_mmc_emmc_boot_partition(struct mmc *mmc)
+{
+	int part;
+#ifdef CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
+	part = CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION;
+#else
+	/*
+	 * We need to check what the partition is configured to.
+	 * 1 and 2 match up to boot0 / boot1 and 7 is user data
+	 * which is the first physical partition (0).
+	 */
+	part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
+	if (part == 7)
+		part = 0;
+#endif
+	return part;
+}
+
+int __weak spl_mmc_emmc_boot_partition(struct mmc *mmc)
+{
+	return default_spl_mmc_emmc_boot_partition(mmc);
+}
+
 int spl_mmc_load(struct spl_image_info *spl_image,
 		 struct spl_boot_device *bootdev,
 		 const char *filename,
@@ -355,19 +378,7 @@ int spl_mmc_load(struct spl_image_info *spl_image,
 	err = -EINVAL;
 	switch (boot_mode) {
 	case MMCSD_MODE_EMMCBOOT:
-#ifdef CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
-		part = CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION;
-#else
-		/*
-		 * We need to check what the partition is configured to.
-		 * 1 and 2 match up to boot0 / boot1 and 7 is user data
-		 * which is the first physical partition (0).
-		 */
-		part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
-
-		if (part == 7)
-			part = 0;
-#endif
+		part = spl_mmc_emmc_boot_partition(mmc);
 
 		if (CONFIG_IS_ENABLED(MMC_TINY))
 			err = mmc_switch_part(mmc, part);
diff --git a/include/spl.h b/include/spl.h
index cee9a42ddb5..c643943482d 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -357,6 +357,29 @@ u32 spl_mmc_boot_mode(const u32 boot_device);
  * If not overridden, it is weakly defined in common/spl/spl_mmc.c.
  */
 int spl_mmc_boot_partition(const u32 boot_device);
+
+struct mmc;
+/**
+ * default_spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
+ * mmc:			Pointer for the mmc device structure
+ *
+ * This function should return the eMMC boot partition number which
+ * the SPL should load U-Boot from (on the given boot_device).
+ */
+int default_spl_mmc_emmc_boot_partition(struct mmc *mmc);
+
+/**
+ * spl_mmc_emmc_boot_partition() - eMMC boot partition to load U-Boot from.
+ * mmc:			Pointer for the mmc device structure
+ *
+ * This function should return the eMMC boot partition number which
+ * the SPL should load U-Boot from (on the given boot_device).
+ *
+ * If not overridden, it is weakly defined in common/spl/spl_mmc.c
+ * and calls default_spl_mmc_emmc_boot_partition();
+ */
+int spl_mmc_emmc_boot_partition(struct mmc *mmc);
+
 void spl_set_bd(void);
 
 /**
-- 
2.30.2