From: Tom Rini <trini@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 7/7] am335x_evm: Add support to boot from NOR.
Date: Mon, 17 Jun 2013 10:49:39 -0400 [thread overview]
Message-ID: <51BF2203.20206@ti.com> (raw)
In-Reply-To: <51BF2089.90605@newflow.co.uk>
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On 06/17/2013 10:43 AM, Mark Jackson wrote:
> On 13/05/13 19:28, Tom Rini wrote:
>> From: Steve Kipisz <s-kipisz2@ti.com>
>>
>> NOR requires that s_init be within the first 4KiB of the image so
>> that we can perform the rest of the required pinmuxing to talk
>> with the rest of NOR that we are found on. When NOR_BOOT is set
>> we save our environment in NOR at 512KiB and a redundant copy at
>> 768KiB. We avoid using SPL for this case and u-boot.bin is
>> written directly to the start of NOR.
>
> I'm trying to get this up and running our NanoBone platform, but
> I'm having no success.
>
> Using a non "NOR_BOOT" version, I can boot u-boot and read / write
> to the NOR device (located at 0x08000000).
>
> So I've compiled my "NOR_BOOT" version and stored it at the start
> of the flash device.
>
> But when I switch to booting from NOR (rather than SD) I get no
> output on the serial console.
>
> Using an oscilloscope, I can see the NOR chip select is active for
> a while (approx 350us), so *something* is trying to boot.
>
> How can I debug such an early part of the boot process ?
Did you copy the parts that setup the pinmuxing in s_init for NOR?
- --
Tom
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next prev parent reply other threads:[~2013-06-17 14:49 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-13 18:28 [U-Boot] [PATCH v2 1/7] am33xx/omap3: Clean up gpmc_init slightly Tom Rini
2013-05-13 18:28 ` [U-Boot] [PATCH v2 2/7] am335x_evm: Drop useless CONFIG_ENV_IS_NOWHERE Tom Rini
2013-05-13 18:28 ` [U-Boot] [PATCH v2 3/7] am335x_evm: Update SPI_BOOT support, add MTDPARTS info Tom Rini
2013-05-15 20:41 ` Peter Korsgaard
2013-05-13 18:28 ` [U-Boot] [PATCH v2 4/7] am335x_evm: Only set CONFIG_NAND when !CONFIG_SPI_BOOT Tom Rini
2013-05-15 20:42 ` Peter Korsgaard
2013-05-13 18:28 ` [U-Boot] [PATCH v2 5/7] am335x_evm: Rework board_is_foo() checks Tom Rini
2013-05-15 20:43 ` Peter Korsgaard
2013-05-13 18:28 ` [U-Boot] [PATCH v2 6/7] am335x_evm: Add support for the NOR module on the memory cape Tom Rini
2013-05-16 14:32 ` Peter Korsgaard
2013-05-16 14:46 ` Tom Rini
2013-05-16 18:54 ` Peter Korsgaard
2013-05-16 19:27 ` Tom Rini
2013-05-16 19:32 ` Peter Korsgaard
2013-05-13 18:28 ` [U-Boot] [PATCH v2 7/7] am335x_evm: Add support to boot from NOR Tom Rini
2013-05-16 14:36 ` Peter Korsgaard
2013-05-16 14:49 ` Tom Rini
2013-05-16 18:55 ` Peter Korsgaard
2013-05-16 19:30 ` Tom Rini
2013-05-16 19:32 ` Peter Korsgaard
2013-06-17 14:43 ` Mark Jackson
2013-06-17 14:49 ` Tom Rini [this message]
2013-06-17 14:59 ` Mark Jackson
2013-06-17 15:01 ` Tom Rini
2013-06-17 15:23 ` Mark Jackson
2013-06-17 15:23 ` Mark Jackson
2013-06-17 15:29 ` Tom Rini
2013-06-17 16:01 ` Stefan Roese
2013-06-17 16:10 ` Mark Jackson
2013-06-17 17:04 ` Kipisz, Steven
2013-06-17 18:38 ` Mark Jackson
2013-06-18 12:11 ` Mark Jackson
2013-07-11 13:06 ` Mark Jackson
2013-07-11 13:28 ` Tom Rini
2013-07-11 13:45 ` Mark Jackson
2013-07-11 14:34 ` Albert ARIBAUD
2013-07-11 15:54 ` Tom Rini
2013-07-11 16:08 ` Albert ARIBAUD
2013-07-11 16:14 ` Albert ARIBAUD
2013-07-11 16:17 ` Tom Rini
2013-07-17 12:58 ` Mark Jackson
2013-07-17 13:32 ` Tom Rini
2013-05-15 20:39 ` [U-Boot] [PATCH v2 1/7] am33xx/omap3: Clean up gpmc_init slightly Peter Korsgaard
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