[U-Boot] [PATCH v3 3/3] ARM:AM33XX: Add SPL support for AM335X EVM

[Tom Rini <trini@ti.com>]

On 01/03/2012 01:18 AM, Kumar Nath, Chandan wrote:
> 
>> -----Original Message-----
>> From: Igor Grinberg [mailto:grinberg at compulab.co.il]
>> Sent: Tuesday, January 03, 2012 1:44 PM
>> To: Kumar Nath, Chandan
>> Cc: u-boot at lists.denx.de; Rini, Tom
>> Subject: Re: [U-Boot] [PATCH v3 3/3] ARM:AM33XX: Add SPL support for
>> AM335X EVM
>>
>> On 01/03/12 08:42, Chandan Nath wrote:
>>> This patch is added to support SPL feature on AM335X
>>> platform. In this patch, MMC1 is configured as boot
>>> device for SPL and support for other devices will be
>>> added in the next patch series.
>>>
>>> Signed-off-by: Chandan Nath <chandan.nath@ti.com>
>>> Signed-off-by: Tom Rini <trini@ti.com>
>>> ---
>>> Changes since v2:
>>>  - Added missing omap.h file
>>>
>>> Changes since v1:
>>>  - Rebased to master branch
>>>  - Replaced am33xx lowleve_init.S with omap-common lowlevel_init.S
>>>    in order to use common code for omap_bootmode.
>>>
>>>  arch/arm/cpu/armv7/am33xx/Makefile            |    2 -
>>>  arch/arm/cpu/armv7/am33xx/board.c             |   65
>> +++++++++++++++++++++--
>>>  arch/arm/cpu/armv7/am33xx/config.mk           |   18 ++++++
>>>  arch/arm/cpu/armv7/am33xx/emif4.c             |    2 +-
>>>  arch/arm/cpu/armv7/am33xx/lowlevel_init.S     |   72 ---------------
>> ----------
>>>  arch/arm/cpu/armv7/omap-common/Makefile       |    3 +
>>>  arch/arm/include/asm/arch-am33xx/common_def.h |   22 ++++++++
>>>  arch/arm/include/asm/arch-am33xx/omap.h       |   59
>> ++++++++++++++++++++
>>>  arch/arm/include/asm/arch-am33xx/sys_proto.h  |    1 +
>>>  arch/arm/include/asm/omap_common.h            |    5 ++
>>>  board/ti/am335x/common_def.h                  |   24 --------
>>>  board/ti/am335x/evm.c                         |    2 +-
>>>  board/ti/am335x/mux.c                         |    2 +-
>>>  include/configs/am335x_evm.h                  |   39 ++++++++++++-
>>>  spl/Makefile                                  |   13 ++---
>>>  15 files changed, 214 insertions(+), 115 deletions(-)
>>>  create mode 100644 arch/arm/cpu/armv7/am33xx/config.mk
>>>  delete mode 100644 arch/arm/cpu/armv7/am33xx/lowlevel_init.S
>>>  create mode 100644 arch/arm/include/asm/arch-am33xx/common_def.h
>>>  create mode 100644 arch/arm/include/asm/arch-am33xx/omap.h
>>>  delete mode 100644 board/ti/am335x/common_def.h
>>>
>>> diff --git a/arch/arm/cpu/armv7/am33xx/Makefile
>> b/arch/arm/cpu/armv7/am33xx/Makefile
>>> index 6beafbb..7768912 100644
>>> --- a/arch/arm/cpu/armv7/am33xx/Makefile
>>> +++ b/arch/arm/cpu/armv7/am33xx/Makefile
>>> @@ -16,8 +16,6 @@ include $(TOPDIR)/config.mk
>>>
>>>  LIB	= $(obj)lib$(SOC).o
>>>
>>> -SOBJS	:= lowlevel_init.o
>>> -
>>>  COBJS	+= clock.o
>>>  COBJS	+= sys_info.o
>>>  COBJS	+= ddr.o
>>> diff --git a/arch/arm/cpu/armv7/am33xx/board.c
>> b/arch/arm/cpu/armv7/am33xx/board.c
>>> index 312643c..2a45933 100644
>>> --- a/arch/arm/cpu/armv7/am33xx/board.c
>>> +++ b/arch/arm/cpu/armv7/am33xx/board.c
>>> @@ -19,19 +19,45 @@
>>>  #include <common.h>
>>>  #include <asm/arch/cpu.h>
>>>  #include <asm/arch/hardware.h>
>>> +#include <asm/arch/omap.h>
>>>  #include <asm/arch/ddr_defs.h>
>>>  #include <asm/arch/clock.h>
>>> +#include <asm/arch/mmc_host_def.h>
>>> +#include <asm/arch/common_def.h>
>>>  #include <asm/io.h>
>>> +#include <asm/omap_common.h>
>>>
>>>  DECLARE_GLOBAL_DATA_PTR;
>>>
>>>  struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
>>>  struct gptimer *timer_base = (struct gptimer *)CONFIG_SYS_TIMERBASE;
>>> +struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE;
>>> +
>>> +struct omap_boot_parameters boot_params __attribute__
>> ((section(".data")));
>>> +
>>> +#ifdef CONFIG_SPL_BUILD
>>> +u32 omap_bootmode = MMCSD_MODE_FAT;
>>> +
>>> +u32 omap_boot_device(void)
>>> +{
>>> +	return (u32) (boot_params.omap_bootdevice);
>>> +}
>>> +
>>> +u32 omap_boot_mode(void)
>>> +{
>>> +	return omap_bootmode;
>>> +}
>>> +
>>
>> can't arch/arm/cpu/armv7/omap-common/hwinit-common.c be used for this?
> 
> I tried using hwinit-common.c file, but there are some other functions defined
> which are not required. Could you tell me if there is any method to use only
> Above functions from hwinit-common.c file.

This probably just means there's further common code that am33xx needs
to be moved over to use from the omap4/5 family.  For example, the emif
code.

-- 
Tom