[PATCH 1/4] fastboot: mmc: Add CONFIG_FASTBOOT_MMC_USER_SUPPORT

[Patrick Delaunay]

Split userdata and boot partition support for eMMC update
and correct the description (update is supported).

The new configuration CONFIG_FASTBOOT_MMC_USER_SUPPORT
allows to activate support of userdata partition update,
based on target name=CONFIG_FASTBOOT_MMC_USER_NAME

This patch also removes the unnecessary dependency with
ARCH_MEDIATEK and EFI_PARTITION.

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

 configs/mt8518_ap1_emmc_defconfig |  1 +
 drivers/fastboot/Kconfig          | 22 +++++++++++++++++-----
 drivers/fastboot/fb_mmc.c         |  9 ++++++---
 3 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/configs/mt8518_ap1_emmc_defconfig b/configs/mt8518_ap1_emmc_defconfig
index b95d2c683a..d5fb0ccd48 100644
--- a/configs/mt8518_ap1_emmc_defconfig
+++ b/configs/mt8518_ap1_emmc_defconfig
@@ -25,6 +25,7 @@ CONFIG_FASTBOOT_BUF_SIZE=0x1E00000
 CONFIG_FASTBOOT_FLASH=y
 CONFIG_FASTBOOT_FLASH_MMC_DEV=0
 CONFIG_FASTBOOT_MMC_BOOT1_SUPPORT=y
+CONFIG_FASTBOOT_MMC_USER_SUPPORT=y
 CONFIG_DM_MMC=y
 CONFIG_MMC_HS200_SUPPORT=y
 CONFIG_MMC_MTK=y
diff --git a/drivers/fastboot/Kconfig b/drivers/fastboot/Kconfig
index d4436dfc91..45e07d05e0 100644
--- a/drivers/fastboot/Kconfig
+++ b/drivers/fastboot/Kconfig
@@ -124,14 +124,26 @@ config FASTBOOT_MMC_BOOT1_NAME
 	  defined here.
 	  The default target name for updating EMMC_BOOT1 is "mmc0boot0".
 
+config FASTBOOT_MMC_USER_SUPPORT
+	bool "Enable eMMC userdata partition flash/erase"
+	depends on FASTBOOT_FLASH_MMC
+	help
+	  Define this to enable the support "flash" and "erase" command on
+	  eMMC userdata. The "flash" command only update the MBR and GPT
+	  header when CONFIG_EFI_PARTITION is supported.
+	  The "erase" command erase all the userdata.
+	  This occurs when the specified "partition name" on the
+	  fastboot command line matches the value CONFIG_FASTBOOT_MMC_USER_NAME.
+
 config FASTBOOT_MMC_USER_NAME
-	string "Target name for erasing EMMC_USER"
-	depends on FASTBOOT_FLASH_MMC && EFI_PARTITION && ARCH_MEDIATEK
+	string "Target name for updating EMMC_USER"
+	depends on FASTBOOT_MMC_USER_SUPPORT
 	default "mmc0"
 	help
-	  The fastboot "erase" command supports erasing EMMC_USER. This occurs
-	  when the specified "EMMC_USER name" on the "fastboot erase" commands
-	  match the value defined here.
+	  The fastboot "flash" and "erase" command supports EMMC_USER.
+	  This occurs when the specified "EMMC_USER name" on the
+	  "fastboot flash" and the "fastboot erase" commands match the value
+	  defined here.
 	  The default target name for erasing EMMC_USER is "mmc0".
 
 config FASTBOOT_GPT_NAME
diff --git a/drivers/fastboot/fb_mmc.c b/drivers/fastboot/fb_mmc.c
index b2f8932e1c..ab6674cac2 100644
--- a/drivers/fastboot/fb_mmc.c
+++ b/drivers/fastboot/fb_mmc.c
@@ -132,7 +132,8 @@ static void write_raw_image(struct blk_desc *dev_desc,
 	fastboot_okay(NULL, response);
 }
 
-#ifdef CONFIG_FASTBOOT_MMC_BOOT1_SUPPORT
+#if defined(CONFIG_FASTBOOT_MMC_BOOT1_SUPPORT) || \
+	defined(CONFIG_FASTBOOT_MMC_USER_SUPPORT)
 static int fb_mmc_erase_mmc_hwpart(struct blk_desc *dev_desc)
 {
 	lbaint_t blks;
@@ -151,7 +152,9 @@ static int fb_mmc_erase_mmc_hwpart(struct blk_desc *dev_desc)
 
 	return 0;
 }
+#endif
 
+#ifdef CONFIG_FASTBOOT_MMC_BOOT1_SUPPORT
 static void fb_mmc_boot1_ops(struct blk_desc *dev_desc, void *buffer,
 			     u32 buff_sz, char *response)
 {
@@ -427,7 +430,7 @@ void fastboot_mmc_flash_write(const char *cmd, void *download_buffer,
 #endif
 
 #if CONFIG_IS_ENABLED(EFI_PARTITION)
-#ifndef CONFIG_FASTBOOT_MMC_USER_NAME
+#ifndef CONFIG_FASTBOOT_MMC_USER_SUPPORT
 	if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
 #else
 	if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0 ||
@@ -551,7 +554,7 @@ void fastboot_mmc_erase(const char *cmd, char *response)
 	}
 #endif
 
-#ifdef CONFIG_FASTBOOT_MMC_USER_NAME
+#ifdef CONFIG_FASTBOOT_MMC_USER_SUPPORT
 	if (strcmp(cmd, CONFIG_FASTBOOT_MMC_USER_NAME) == 0) {
 		/* erase EMMC userdata */
 		if (fb_mmc_erase_mmc_hwpart(dev_desc))
-- 
2.17.1