[U-Boot] [PATCH] spl: mmc: Add option to set eMMC HW boot partition

[Lukasz Majewski]

From: Mans Rullgard <mans at mansr.com>

This change allows setting pre-defined eMMC boot partition for SPL eMMC
booting. It is necessary in the case when one wants to boot (through falcon
boot) from eMMC after loading SPL from other memory (like SPI-NOR).

Signed-off-by: Mans Rullgard <mans at mansr.com>
[lukma: Edit the commit message]
Signed-off-by: Lukasz Majewski <lukma at denx.de>
Acked-by: Andreas Dannenberg <dannenberg at ti.com>

---

 common/spl/Kconfig   | 6 ++++++
 common/spl/spl_mmc.c | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index f467eca2be..5b7667ea16 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -314,6 +314,12 @@ config SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
 	  Address on the MMC to load U-Boot from, when the MMC is being used
 	  in raw mode. Units: MMC sectors (1 sector = 512 bytes).
 
+config SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
+	int "Number of the eMMC boot partition to use"
+	default 1
+	help
+	  eMMC boot partition number to use when the eMMC in raw mode.
+
 config SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
 	bool "MMC Raw mode: by partition"
 	help
diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
index 2caceb5186..a4d2e63b82 100644
--- a/common/spl/spl_mmc.c
+++ b/common/spl/spl_mmc.c
@@ -334,6 +334,9 @@ 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
@@ -343,6 +346,7 @@ int spl_mmc_load(struct spl_image_info *spl_image,
 
 		if (part == 7)
 			part = 0;
+#endif
 
 		if (CONFIG_IS_ENABLED(MMC_TINY))
 			err = mmc_switch_part(mmc, part);
-- 
2.11.0