From: Algapally Santosh Sagar <santoshsagar.algapa...@amd.com>

The SERIAL_DT_BAUD is added to Kconfig and the DEFAULT_ENV_IS_RW is moved
to the Kconfig for easier configuration.
Hence, the CONFIG_DEFAULT_ENV_IS_RW config is added to the defconfig files
to allow enabling them for armada boards.

Signed-off-by: Algapally Santosh Sagar <santoshsagar.algapa...@amd.com>
Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbar...@amd.com>
---
 configs/mvebu_db-88f3720_defconfig          |  1 +
 configs/mvebu_espressobin-88f3720_defconfig |  1 +
 configs/mvebu_mcbin-88f8040_defconfig       |  1 +
 drivers/serial/Kconfig                      | 16 ++++++++++++++++
 include/configs/mvebu_armada-37xx.h         |  1 -
 5 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/configs/mvebu_db-88f3720_defconfig 
b/configs/mvebu_db-88f3720_defconfig
index ed0d28fd7d..e3bbaa2173 100644
--- a/configs/mvebu_db-88f3720_defconfig
+++ b/configs/mvebu_db-88f3720_defconfig
@@ -21,6 +21,7 @@ CONFIG_USE_PREBOOT=y
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DEFAULT_ENV_IS_RW=y
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_ARCH_EARLY_INIT_R=y
 CONFIG_BOARD_EARLY_INIT_F=y
diff --git a/configs/mvebu_espressobin-88f3720_defconfig 
b/configs/mvebu_espressobin-88f3720_defconfig
index ce696787e8..a06eb2dd42 100644
--- a/configs/mvebu_espressobin-88f3720_defconfig
+++ b/configs/mvebu_espressobin-88f3720_defconfig
@@ -22,6 +22,7 @@ CONFIG_USE_PREBOOT=y
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DEFAULT_ENV_IS_RW=y
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_ARCH_EARLY_INIT_R=y
 CONFIG_BOARD_EARLY_INIT_F=y
diff --git a/configs/mvebu_mcbin-88f8040_defconfig 
b/configs/mvebu_mcbin-88f8040_defconfig
index 058c04333a..4ee5f242f7 100644
--- a/configs/mvebu_mcbin-88f8040_defconfig
+++ b/configs/mvebu_mcbin-88f8040_defconfig
@@ -22,6 +22,7 @@ CONFIG_USE_PREBOOT=y
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DEFAULT_ENV_IS_RW=y
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_ARCH_EARLY_INIT_R=y
 CONFIG_BOARD_EARLY_INIT_F=y
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 10d07daf27..96cea87f45 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -24,6 +24,22 @@ config BAUDRATE
          in the SPL stage (most drivers) or for choosing a default baudrate
          in the absence of an environment setting (serial_mxc.c).
 
+config SERIAL_DT_BAUD
+       bool "Fetch serial baudrate from device tree"
+       depends on DM_SERIAL && SPL_ENV_SUPPORT
+       select DEFAULT_ENV_IS_RW
+       help
+         Select this to enable fetching and setting of the baudrate
+         configured in the DT. Replace the default baudrate with the DT
+         baudrate and also set it to the environment.
+
+config DEFAULT_ENV_IS_RW
+       bool "Make default environment as writable"
+       depends on DM_SERIAL
+       help
+         Select this to enable to make default environment writable. This
+         allows modifying the default environment.
+
 config REQUIRE_SERIAL_CONSOLE
        bool "Require a serial port for console"
        # Running without a serial console is not supported by the
diff --git a/include/configs/mvebu_armada-37xx.h 
b/include/configs/mvebu_armada-37xx.h
index 76e148f55e..18b55be0d8 100644
--- a/include/configs/mvebu_armada-37xx.h
+++ b/include/configs/mvebu_armada-37xx.h
@@ -30,7 +30,6 @@
 /*
  * Environment
  */
-#define DEFAULT_ENV_IS_RW              /* required for configuring default 
fdtfile= */
 
 #ifdef CONFIG_MMC
 #define BOOT_TARGET_DEVICES_MMC(func, i) func(MMC, mmc, i)
-- 
2.17.1

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