@@ -61,4 +61,17 @@
<0x1f801500 0x200>; /* out */
status = "disabled";
};
+
+ sdhci: sdhci@1f8ec000 {
+ compatible = "microchip,pic32mzda-sdhci";
+ reg = <0x1f8ec000 0x100>;
+ interrupts = <191 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clock REF4CLK>, <&clock PB5CLK>;
+ clock-names = "base_clk", "sys_clk";
+ bus-width = <4>;
+ cap-sd-highspeed;
+ clock-freq-min-max = <25000000>,<25000000>;
+ clock-irq-pins = <1>,<1>;
+ status = "disabled";
+ };
};
@@ -23,6 +23,9 @@
};
&clock {
+ microchip,refo2-frequency = <50000000>;
+ microchip,refo4-frequency = <25000000>;
+ microchip,refo5-frequency = <40000000>;
status = "okay";
u-boot,dm-pre-reloc;
};
@@ -36,3 +39,7 @@
status = "okay";
u-boot,dm-pre-reloc;
};
+
+&sdhci {
+ status = "okay";
+};
\ No newline at end of file
@@ -19,3 +19,5 @@ CONFIG_CLK=y
CONFIG_PINCTRL=y
# CONFIG_PINCTRL_FULL is not set
CONFIG_PIC32_PINCTRL=y
+CONFIG_DM_MMC=y
+CONFIG_PIC32_SDHCI=y
\ No newline at end of file
@@ -84,6 +84,33 @@
*/
#define CONFIG_OF_LIBFDT 1
+/*-----------------------------------------------------------------------
+ * SDHC Configuration
+ */
+#define CONFIG_SDHCI
+#define CONFIG_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_CMD_MMC
+
+/*-----------------------------------------------------------------------
+ * File System Configuration
+ */
+/* FAT FS */
+#define CONFIG_DOS_PARTITION
+#define CONFIG_PARTITION_UUIDS
+#define CONFIG_SUPPORT_VFAT
+#define CONFIG_FS_FAT
+#define CONFIG_FAT_WRITE
+#define CONFIG_CMD_FS_GENERIC
+#define CONFIG_CMD_PART
+#define CONFIG_CMD_FAT
+
+/* EXT4 FS */
+#define CONFIG_FS_EXT4
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_EXT4
+#define CONFIG_CMD_EXT4_WRITE
+
/* -------------------------------------------------
* Environment
*/
@@ -97,4 +124,38 @@
#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" \
+ \
+ "mmcloadenv=fatload mmc 0 ${uenvaddr} ${uenvfile}\0" \
+ "mmcloadscr=fatload mmc 0 ${uenvaddr} ${scriptfile}\0" \
+ "mmcloadub=fatload mmc 0 ${loadaddr} ${ubootfile}\0" \
+ \
+ "loadbootenv=run mmcloadenv\0" \
+ "loadbootscr=run mmcloadscr\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"
+
#endif /* __PIC32MZDASK_CONFIG_H */
Added custom environment variables and rules to locate and load files (from uSD card) in order to boot Linux. Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> --- Changes in v2: None arch/mips/dts/pic32mzda.dtsi | 13 +++++++++ arch/mips/dts/pic32mzda_sk.dts | 7 +++++ configs/pic32mzdask_defconfig | 2 ++ include/configs/pic32mzdask.h | 61 ++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 83 insertions(+)