[U-Boot] [PATCH v1 18/18] board: pic32mzdask: Customize default environments for OS boot.

[Purna Chandra Mandal <purna.mandal@microchip.com>]

Add custom environment variables and commands to help boot
from micro-SD card and/or from network (TFTP protocol).

Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>

---

 include/configs/pic32mzdask.h | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/include/configs/pic32mzdask.h b/include/configs/pic32mzdask.h
index 94e73e3..c903113 100644
--- a/include/configs/pic32mzdask.h
+++ b/include/configs/pic32mzdask.h
@@ -169,5 +169,48 @@
 #define CONFIG_BOOTDELAY    5 /* autoboot after X seconds     */
 #undef    CONFIG_BOOTARGS
 
+#define CONFIG_EXTRA_ENV_SETTINGS                \
+    "loadaddr="__stringify(CONFIG_SYS_LOAD_ADDR)"\0"    \
+    "uenvfile=uEnv.txt\0"                    \
+    "uenvaddr="__stringify(CONFIG_SYS_ENV_ADDR)"\0"        \
+    "scriptfile=boot.scr\0"                    \
+    "ubootfile=u-boot.bin\0"                \
+    "importbootenv= "                    \
+        "env import -t -r ${uenvaddr} ${filesize};\0"    \
+                                \
+    "tftploadenv=tftp ${uenvaddr} ${uenvfile} \0"        \
+    "tftploadscr=tftp ${uenvaddr} ${scriptfile} \0"        \
+    "tftploadub=tftp ${loadaddr} ${ubootfile} \0"        \
+                                \
+    "mmcloadenv=fatload mmc 0 ${uenvaddr} ${uenvfile}\0"    \
+    "mmcloadscr=fatload mmc 0 ${uenvaddr} ${scriptfile}\0"    \
+    "mmcloadub=fatload mmc 0 ${loadaddr} ${ubootfile}\0"    \
+                                \
+    "flashub=protect off bank 1; "                \
+        "erase.b 0x9d004000 0x9d0f3fff; "        \
+        "cp.b ${loadaddr} 0x9d004000 ${filesize}; "    \
+        "cmp.b ${loadaddr} 0x9d004000 ${filesize}; "    \
+        "protect on bank 1; \0"                \
+                                \
+    "loadbootenv=run mmcloadenv || run tftploadenv\0"    \
+    "loadbootscr=run mmcloadscr || run tftploadscr\0"    \
+    "bootcmd_root= "                    \
+        "if run loadbootenv; then "            \
+            "echo Loaded environment ${uenvfile}; "    \
+            "run importbootenv; "            \
+        "fi; "                        \
+        "if test -n \"${bootcmd_uenv}\" ; then "    \
+            "echo Running bootcmd_uenv ...; "    \
+            "run bootcmd_uenv; "            \
+        "fi; "                        \
+        "if run loadbootscr; then "            \
+            "echo Jumping to ${scriptfile}; "    \
+            "source ${uenvaddr}; "            \
+        "fi; "                        \
+        "echo Custom environment or script not found. "    \
+            "Aborting auto booting...; \0"        \
+    ""
+
+#define CONFIG_BOOTCOMMAND        "run bootcmd_root"
 #define CONFIG_MEMSIZE_IN_BYTES        /* pass 'memsize=' in bytes */
 #endif    /* __PIC32MZDASK_CONFIG_H */
-- 
1.8.3.1