IGEP boards now have Device Tree support in the mainline
kernel. To boot an IGEP board using a DT, a uEnv.txt plain
text file could be used to define a custom uenvcmd that will
be run by the default boot command.
It is more convenient to change the default boot command to
allow loading a FDT if it is stored in a uSD/MMC partition.
If no FDT is found then the command behaves just as it used
so this change won't break existing setup for current users.
Signed-off-by: Javier Martinez Canillas <javier.marti...@collabora.co.uk>
---
board/isee/igep00x0/igep00x0.c | 14 ++++++++++++++
include/configs/igep00x0.h | 9 +++++++++
2 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/board/isee/igep00x0/igep00x0.c b/board/isee/igep00x0/igep00x0.c
index 0d4679d..fdd2773 100644
--- a/board/isee/igep00x0/igep00x0.c
+++ b/board/isee/igep00x0/igep00x0.c
@@ -154,6 +154,18 @@ int board_mmc_init(bd_t *bis)
}
#endif
+void set_fdt(void)
+{
+ switch (gd->bd->bi_arch_number) {
+ case MACH_TYPE_IGEP0020:
+ setenv("fdtfile", "omap3-igep0020.dtb");
+ break;
+ case MACH_TYPE_IGEP0030:
+ setenv("fdtfile", "omap3-igep0030.dtb");
+ break;
+ }
+}
+
/*
* Routine: misc_init_r
* Description: Configure board specific parts
@@ -166,6 +178,8 @@ int misc_init_r(void)
dieid_num_r();
+ set_fdt();
+
return 0;
}
diff --git a/include/configs/igep00x0.h b/include/configs/igep00x0.h
index 1d8090b..72752af 100644
--- a/include/configs/igep00x0.h
+++ b/include/configs/igep00x0.h
@@ -149,6 +149,7 @@
#define CONFIG_EXTRA_ENV_SETTINGS \
"usbtty=cdc_acm\0" \
"loadaddr=0x82000000\0" \
+ "fdtaddr=0x81600000\0" \
"usbtty=cdc_acm\0" \
"console=ttyO2,115200n8\0" \
"mpurate=auto\0" \
@@ -180,9 +181,12 @@
"importbootenv=echo Importing environment from mmc ...; " \
"env import -t $loadaddr $filesize\0" \
"loaduimage=fatload mmc ${mmcdev} ${loadaddr} uImage\0" \
+ "loadfdt=fatload mmc ${mmcdev} ${fdtaddr} ${fdtfile}\0" \
"mmcboot=echo Booting from mmc ...; " \
"run mmcargs; " \
"bootm ${loadaddr}\0" \
+ "mmcbootfdt=echo Booting with DT from mmc ...; " \
+ "bootm ${loadaddr} - ${fdtaddr}\0" \
"nandboot=echo Booting from onenand ...; " \
"run nandargs; " \
"onenand read ${loadaddr} 280000 400000; " \
@@ -199,6 +203,11 @@
"run uenvcmd;" \
"fi;" \
"if run loaduimage; then " \
+ "if test -n $fdtfile; then " \
+ "if run loadfdt; then " \
+ "run mmcbootfdt;" \
+ "fi;" \
+ "fi;" \
"run mmcboot;" \
"fi;" \
"fi;" \
--
1.7.7.6
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