From: Fabio Estevam fabio.estevam@freescale.com

Update the environment as done in other imx boards to allow easy switching between booting a non-dt kernel and a dt kernel.

Change CONFIG_LOADADDR to 0x92000000, so that we can have the:

- uImage at 0x92000000 - imx51-babbage.dtb at 0x91000000

,which are adequate locations in RAM to avoid overlapping.

Boot tested the following kernels:

- 2.6.35 from FSL (11.09 branch) - 3.9-rc7 non-dt - 3.9-rc7 dt

Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- Changes since v2: - Mention the LOADADDR change in the commit log Changes since v1: - Do not remove mmcrootfstype - Fix typo in Subject - Improve commit log by adding the tested booted kernels

include/configs/mx51evk.h | 42 +++++++++++++++++++++++++++++++++++++++--- 1 file changed, 39 insertions(+), 3 deletions(-)

diff --git a/include/configs/mx51evk.h b/include/configs/mx51evk.h index cb3d938..4545a80 100644 --- a/include/configs/mx51evk.h +++ b/include/configs/mx51evk.h @@ -149,11 +149,15 @@

#define CONFIG_ETHPRIME "FEC0"

-#define CONFIG_LOADADDR 0x90800000 /* loadaddr env var */ +#define CONFIG_LOADADDR 0x92000000 /* loadaddr env var */

#define CONFIG_EXTRA_ENV_SETTINGS \ "script=boot.scr\0" \ "uimage=uImage\0" \ + "fdt_file=imx51-babbage.dtb\0" \ + "fdt_addr=0x91000000\0" \ + "boot_fdt=try\0" \ + "ip_dyn=yes\0" \ "mmcdev=0\0" \ "mmcpart=2\0" \ "mmcroot=/dev/mmcblk0p3 rw\0" \ @@ -166,15 +170,47 @@ "bootscript=echo Running bootscript from mmc ...; " \ "source\0" \ "loaduimage=fatload mmc ${mmcdev}:${mmcpart} ${loadaddr} ${uimage}\0" \ + "loadfdt=fatload mmc ${mmcdev}:${mmcpart} ${fdt_addr} ${fdt_file}\0" \ "mmcboot=echo Booting from mmc ...; " \ "run mmcargs; " \ - "bootm\0" \ + "if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \ + "if run loadfdt; then " \ + "bootm ${loadaddr} - ${fdt_addr}; " \ + "else " \ + "if test ${boot_fdt} = try; then " \ + "bootm; " \ + "else " \ + "echo WARN: Cannot load the DT; " \ + "fi; " \ + "fi; " \ + "else " \ + "bootm; " \ + "fi;\0" \ "netargs=setenv bootargs console=ttymxc0,${baudrate} " \ "root=/dev/nfs " \ "ip=dhcp nfsroot=${serverip}:${nfsroot},v3,tcp\0" \ "netboot=echo Booting from net ...; " \ "run netargs; " \ - "dhcp ${uimage}; bootm\0" \ + "if test ${ip_dyn} = yes; then " \ + "setenv get_cmd dhcp; " \ + "else " \ + "setenv get_cmd tftp; " \ + "fi; " \ + "${get_cmd} ${uimage}; " \ + "if test ${boot_fdt} = yes || test ${boot_fdt} = try; then " \ + "if ${get_cmd} ${fdt_addr} ${fdt_file}; then " \ + "bootm ${loadaddr} - ${fdt_addr}; " \ + "else " \ + "if test ${boot_fdt} = try; then " \ + "bootm; " \ + "else " \ + "echo ERROR: Cannot load the DT; " \ + "exit; " \ + "fi; " \ + "fi; " \ + "else " \ + "bootm; " \ + "fi;\0"

#define CONFIG_BOOTCOMMAND \ "mmc dev ${mmcdev}; if mmc rescan; then " \