[U-Boot] [PATCH 5/5] nand: sunxi: And a20_nandread command utilizing spl nand read driver

["Daniel Kochmański" <dkochmanski@turtle-solutions.eu>]

Hans de Goede writes:

> Hi,
>
> On 05/02/2015 04:26 PM, Ian Campbell wrote:
>> On Wed, 2015-04-29 at 17:03 +0200, Daniel Kochma?ski wrote:
>>> This patch adds a20_nandread command. It is simple function utilizing
>>> function from SPL nand driver `nand_spl_load_image`.
>>>
>>> Usage: a20_nandread <address> <offset> <bytes>
>>
>> This stuff should really be integrated with cmd_nand.c rather than
>> adding an adhoc SoC specific interface.
>
> I want to go even further and I see that this really needs to be integrated
> with the blkdev code so that one can just do:
>
> ls nand 0:1
>
> And things will just work, these way we can also just have the standard
> boot cmds from config_distro_bootcmd.h work rather then needing special
> nand boot commands.
>
> Regards,
>
> Hans
>

It was more a convenient function then proper integration. I'll look
into that, but it may take time - I'm quite unfamiliar with U-Boot nand
interface.
>
>
>>
>>>
>>> Signed-off-by: Daniel Kochma?ski <dkochmanski@turtle-solutions.eu>
>>> Cc: Ian Campbell <ijc@hellion.org.uk>
>>> Cc: Hans De Goede <hdegoede@redhat.com>
>>> ---
>>>
>>>   common/Kconfig            |  7 +++++++
>>>   common/Makefile           |  1 +
>>>   common/cmd_a20_nandread.c | 27 +++++++++++++++++++++++++++
>>>   3 files changed, 35 insertions(+)
>>>   create mode 100644 common/cmd_a20_nandread.c
>>>
>>> diff --git a/common/Kconfig b/common/Kconfig
>>> index 5d7e48a..8edabb6 100644
>>> --- a/common/Kconfig
>>> +++ b/common/Kconfig
>>> @@ -204,6 +204,13 @@ config CMD_NAND
>>>   	help
>>>   	  NAND support.
>>>
>>> +config CMD_A20_NANDREAD
>>> +	depends on SPL_NAND_SUPPORT
>>> +	bool "a20_nandread"
>>> +	help
>>> +	  NAND read support for A20 SoC. Depends on SPL driver.
>>> +	  Usage: a20_nandread <address> <offset> <size>
>>> +
>>>   config CMD_SPI
>>>   	bool "sspi"
>>>   	help
>>> diff --git a/common/Makefile b/common/Makefile
>>> index fba3830..9286518 100644
>>> --- a/common/Makefile
>>> +++ b/common/Makefile
>>> @@ -138,6 +138,7 @@ obj-$(CONFIG_CMD_MMC) += cmd_mmc.o
>>>   obj-$(CONFIG_CMD_MMC_SPI) += cmd_mmc_spi.o
>>>   obj-$(CONFIG_MP) += cmd_mp.o
>>>   obj-$(CONFIG_CMD_MTDPARTS) += cmd_mtdparts.o
>>> +obj-$(CONFIG_CMD_A20_NANDREAD) += cmd_a20_nandread.o
>>>   obj-$(CONFIG_CMD_NAND) += cmd_nand.o
>>>   obj-$(CONFIG_CMD_NET) += cmd_net.o
>>>   obj-$(CONFIG_CMD_ONENAND) += cmd_onenand.o
>>> diff --git a/common/cmd_a20_nandread.c b/common/cmd_a20_nandread.c
>>> new file mode 100644
>>> index 0000000..7361be7
>>> --- /dev/null
>>> +++ b/common/cmd_a20_nandread.c
>>> @@ -0,0 +1,27 @@
>>> +#include <common.h>
>>> +#include <command.h>
>>> +
>>> +int nand_spl_load_image(uint32_t offs, unsigned int size, void *dest);
>>> +
>>> +static int do_a20_nandread(cmd_tbl_t *cmdtp, int flag,
>>> +			   int argc, char *const argv[])
>>> +{
>>> +	if (argc != 4) {
>>> +		printf("usage: a20_nandread <address> <offset> <bytes>\n");
>>> +		return 1;
>>> +	}
>>> +
>>> +	uint32_t dst = simple_strtoul(argv[1], NULL, 16);
>>> +	uint32_t src = simple_strtoul(argv[2], NULL, 16);
>>> +	uint32_t cnt = simple_strtoul(argv[3], NULL, 16);
>>> +	printf("Loading 0x%08XB @ 0x%08X -> 0x%08X...\n", cnt, src, dst);
>>> +	nand_spl_load_image(src, cnt, (void *)dst);
>>> +	return 0;
>>> +}
>>> +
>>> +U_BOOT_CMD(
>>> +	a20_nandread,	CONFIG_SYS_MAXARGS,	3,	do_a20_nandread,
>>> +	"a20_nandread",
>>> +	"[offset size bytes]\n"
>>> +	"   "
>>> +);
>>
>>

-- 
Daniel Kochma?ski | Pozna?, Poland
;; aka jackdaniel

"Be the change that you wish to see in the world." - Mahatma Gandhi