[U-Boot] [PATCH V2 2/5] omap-common: add nand spl support

[Aneesh V <aneesh@ti.com>]

Dear Simon, Andreas,

On Tuesday 26 July 2011 02:12 PM, Simon Schwarz wrote:
> Dear Andreas,
>
> On 07/26/2011 08:07 AM, Andreas Bie?mann wrote:
>> Dear Simon,
>>
>> Am 25.07.2011 um 20:05 schrieb Simon Schwarz:
>>
>>> Add NAND support for the new SPL structure.
>>>
>>> ---
>>> This patch didn't exist before V2!
>>>
>>> V2 changes:
>>> ADD Some define-barriers for OMAP3 to only use NAND
>>> ADD nand_load_image() - inits the OMAP gpmc, loads the images - parses the
>>> 	header
>>> CHG cosmetic
>>> ADD do_reset() implementation for omap-common spl
>>> ADD nand_copy_image to nand.h
>>> ADD CPP barriers for mmc and nand support. The parts depending on library
>>> 	support are only compiled if the respective library is included.
>>>
>>> Transition from V1 to V2 also includes that this patch is now based on
>>> 	- the new SPL layout by Aneesh V and Daniel Schwierzeck
>>>    	- the OMAP4 SPL patches by Aneesh V
>>>
>>> Signed-off-by: Simon Schwarz<simonschwarzcor@gmail.com>
>>> ---
>>> arch/arm/cpu/armv7/omap-common/spl.c |   43 ++++++++++++++++++++++++++++++++++
>>> arch/arm/include/asm/omap_common.h   |    2 +
>>> include/nand.h                       |    3 ++
>>> 3 files changed, 48 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/arch/arm/cpu/armv7/omap-common/spl.c b/arch/arm/cpu/armv7/omap-common/spl.c
>>> index d177652..3a0093d 100644
>>> --- a/arch/arm/cpu/armv7/omap-common/spl.c
>>> +++ b/arch/arm/cpu/armv7/omap-common/spl.c
>>> @@ -26,6 +26,7 @@
>>> #include<asm/u-boot.h>
>>> #include<asm/utils.h>
>>> #include<asm/arch/sys_proto.h>
>>> +#include<nand.h>
>>> #include<mmc.h>
>>> #include<fat.h>
>>> #include<timestamp_autogenerated.h>
>>> @@ -107,6 +108,7 @@ static void parse_image_header(const struct image_header *header)
>>> 	}
>>> }
>>>
>>> +#ifdef CONFIG_SPL_MMC_SUPPORT
>>> static void mmc_load_image_raw(struct mmc *mmc)
>>> {
>>> 	u32 image_size_sectors, err;
>>> @@ -140,7 +142,9 @@ end:
>>> 		hang();
>>> 	}
>>> }
>>> +#endif /* CONFIG_SPL_MMC_SUPPORT */
>>>
>>> +#ifdef CONFIG_SPL_MMC_SUPPORT
>>> static void mmc_load_image_fat(struct mmc *mmc)
>>> {
>>> 	s32 err;
>>> @@ -173,7 +177,9 @@ end:
>>> 		hang();
>>> 	}
>>> }
>>> +#endif /* CONFIG_SPL_MMC_SUPPORT */
>>>
>>> +#ifdef CONFIG_SPL_MMC_SUPPORT
>>> static void mmc_load_image(void)
>>> {
>>> 	struct mmc *mmc;
>>> @@ -206,6 +212,26 @@ static void mmc_load_image(void)
>>> 		hang();
>>> 	}
>>> }
>>> +#endif /* CONFIG_SPL_MMC_SUPPORT */
>>> +
>>> +#ifdef CONFIG_SPL_NAND_SUPPORT
>>> +static void nand_load_image(void)
>>> +{
>>> +	gpmc_init();
>>> +	nand_init();
>>> +	nand_copy_image(CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE,
>>> +		(uchar *)CONFIG_SYS_NAND_U_BOOT_DST);
>>> +#ifdef CONFIG_NAND_ENV_DST
>>> +	nand_copy_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
>>> +		(uchar *)CONFIG_NAND_ENV_DST);
>>> +#ifdef CONFIG_ENV_OFFSET_REDUND
>>> +	nand_copy_image(CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE,
>>> +		(uchar *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE);
>>> +#endif
>>> +#endif
>>> +	parse_image_header((struct image_header *)CONFIG_SYS_NAND_U_BOOT_DST);
>>> +}
>>> +#endif /* CONFIG_SPL_NAND_SUPPORT */
>>>
>>> void jump_to_image_no_args(void)
>>> {
>>> @@ -228,10 +254,17 @@ void board_init_r(gd_t *id, ulong dummy)
>>> 	boot_device = omap_boot_device();
>>> 	debug("boot device - %d\n", boot_device);
>>> 	switch (boot_device) {
>>> +#ifdef CONFIG_SPL_MMC_SUPPORT
>>> 	case BOOT_DEVICE_MMC1:
>>> 	case BOOT_DEVICE_MMC2:
>>> 		mmc_load_image();
>>> 		break;
>>> +#endif
>>> +#ifdef CONFIG_SPL_NAND_SUPPORT
>>> +	case BOOT_DEVICE_NAND:
>>> +		nand_load_image();
>>> +		break;
>>> +#endif
>>> 	default:
>>> 		printf("SPL: Un-supported Boot Device - %d!!!\n", boot_device);
>>> 		hang();
>>> @@ -259,7 +292,9 @@ void preloader_console_init(void)
>>> 	gd->flags |= GD_FLG_RELOC;
>>> 	gd->baudrate = CONFIG_BAUDRATE;
>>>
>>> +#ifndef CONFIG_OMAP34XX
>>
>> Well .. that was discussed with Aneesh in another mail. I prefer Aneesh decides how the interface should be:
>>    a) OMAP3 provides setup_clocks_for_console() and remove the UART stuff from per_clocks_enable()
>>    b) remove setup_clocks_for_console() here and require preloader_console_init() to have the clocks enabled before
>>
> Totally agree. I just wait for a reply by Aneesh and will change it.

I am fine with either. (a) will allow us to have a debug traces in
prcm_init()(only for SPL) and also print SPL banner a little earlier.
I leave it to active OMAP3 users to decide this.

If you want to go with (b) please do it as below (my patches are
already in u-boot-arm, it will be good if you could do this in your
patch).

---
diff --git a/arch/arm/cpu/armv7/omap-common/spl.c 
b/arch/arm/cpu/armv7/omap-common/spl.c
index d177652..d380b3e 100644
--- a/arch/arm/cpu/armv7/omap-common/spl.c
+++ b/arch/arm/cpu/armv7/omap-common/spl.c
@@ -259,7 +259,6 @@ void preloader_console_init(void)
  	gd->flags |= GD_FLG_RELOC;
  	gd->baudrate = CONFIG_BAUDRATE;

-	setup_clocks_for_console();
  	serial_init();		/* serial communications setup */

  	/* Avoid a second "U-Boot" coming from this string */
diff --git a/arch/arm/cpu/armv7/omap4/board.c 
b/arch/arm/cpu/armv7/omap4/board.c
index 5943d61..a9e90de 100644
--- a/arch/arm/cpu/armv7/omap4/board.c
+++ b/arch/arm/cpu/armv7/omap4/board.c
@@ -196,6 +196,7 @@ void s_init(void)
  	watchdog_init();
  	set_mux_conf_regs();
  #ifdef CONFIG_SPL_BUILD
+	setup_clocks_for_console();
  	preloader_console_init();
  #endif
  	prcm_init();

---

br,
Aneesh