TQM85xx: Support for Flat Device Tree
This patch adds support for Linux kernels using the Flat Device Tree.
It also re-defines the default environment settings for booting Linux
with the FDT blob.
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
diff --git a/include/configs/TQM85xx.h b/include/configs/TQM85xx.h
index 17df118..6320f00 100644
--- a/include/configs/TQM85xx.h
+++ b/include/configs/TQM85xx.h
@@ -201,6 +201,11 @@
#define CFG_PROMPT_HUSH_PS2 "> "
#endif
+/* pass open firmware flat tree */
+#define CONFIG_OF_LIBFDT 1
+#define CONFIG_OF_BOARD_SETUP 1
+#define CONFIG_OF_STDOUT_VIA_ALIAS 1
+
/* CAN */
#ifdef CONFIG_CAN_DRIVER
#define CFG_CAN_BASE 0xE3000000 /* CAN base address */
@@ -463,10 +468,26 @@
#undef CONFIG_BOOTARGS /* the boot command will set bootargs */
+
+/*
+ * Setup some board specific values for the default environment variables
+ */
+#ifdef CONFIG_CPM2
+#define CFG_ENV_CONSDEV "consdev=ttyCPM0\0"
+#else
+#define CFG_ENV_CONSDEV "consdev=ttyS0\0"
+#endif
+#define CFG_ENV_FDT_FILE "fdt_file="MK_STR(CONFIG_HOSTNAME)"/" \
+ MK_STR(CONFIG_HOSTNAME)".dtb\0"
+#define CFG_ENV_BOOTFILE "bootfile="MK_STR(CONFIG_HOSTNAME)"/uImage\0"
+#define CFG_ENV_UBOOT "uboot="MK_STR(CONFIG_HOSTNAME)"/u-boot.bin\0" \
+ "uboot_addr="MK_STR(TEXT_BASE)"\0"
+
#define CONFIG_EXTRA_ENV_SETTINGS \
- "bootfile="CFG_BOOTFILE_PATH"\0" \
+ CFG_ENV_BOOTFILE \
+ CFG_ENV_FDT_FILE \
+ CFG_ENV_CONSDEV \
"netdev=eth0\0" \
- "consdev=ttyS0\0" \
"nfsargs=setenv bootargs root=/dev/nfs rw " \
"nfsroot=$serverip:$rootpath\0" \
"ramargs=setenv bootargs root=/dev/ram rw\0" \
@@ -476,17 +497,24 @@
"addcons=setenv bootargs $bootargs " \
"console=$consdev,$baudrate\0" \
"flash_nfs=run nfsargs addip addcons;" \
- "bootm $kernel_addr\0" \
+ "bootm $kernel_addr - $fdt_addr\0" \
"flash_self=run ramargs addip addcons;" \
- "bootm $kernel_addr $ramdisk_addr\0" \
- "net_nfs=tftp $loadaddr $bootfile;" \
- "run nfsargs addip addcons;bootm\0" \
+ "bootm $kernel_addr $ramdisk_addr $fdt_addr\0" \
+ "net_nfs=tftp $kernel_addr_r $bootfile;" \
+ "tftp $fdt_addr_r $fdt_file;" \
+ "run nfsargs addip addcons;" \
+ "bootm $kernel_addr_r - $fdt_addr_r\0" \
"rootpath=/opt/eldk/ppc_85xx\0" \
- "kernel_addr=FE000000\0" \
- "ramdisk_addr=FE180000\0" \
- "load=tftp 100000 /tftpboot/$hostname/u-boot.bin\0" \
- "update=protect off fffc0000 ffffffff;era fffc0000 ffffffff;" \
- "cp.b 100000 fffc0000 40000;" \
+ "fdt_addr_r=900000\0" \
+ "kernel_addr_r=1000000\0" \
+ "fdt_addr=ffec0000\0" \
+ "kernel_addr=ffd00000\0" \
+ "ramdisk_addr=ff800000\0" \
+ CFG_ENV_UBOOT \
+ "load=tftp 100000 $uboot\0" \
+ "update=protect off $uboot_addr +$filesize;" \
+ "erase $uboot_addr +$filesize;" \
+ "cp.b 100000 $uboot_addr $filesize;" \
"setenv filesize;saveenv\0" \
"upd=run load update\0" \
""