[U-Boot] [PATCH] Fix jornada memory init
Kristoffer Ericson
kristoffer.ericson at gmail.com
Tue Nov 16 20:54:01 CET 2010
Hi,
Just bumping this since Ive gotten no feedback and its not
applied yet.
Best wishes
Kristoffer
On Sat, Nov 06, 2010 at 02:24:27PM +0100, Kristoffer Ericson wrote:
> * Fix memory initialization. This fixes the problem
> with kernel oopses during heavy load.
>
> * Cleanup pinsetup, which for reference is among
> other things needed for proper flash erasing.
>
> Signed-off-by: Kristoffer Ericson <kristoffer.ericson at gmail.com>
> ---
> board/jornada/setup.S | 24 ++++++++++++------------
> 1 files changed, 12 insertions(+), 12 deletions(-)
>
> diff --git a/board/jornada/setup.S b/board/jornada/setup.S
> index 885e02f..cdf5f54 100644
> --- a/board/jornada/setup.S
> +++ b/board/jornada/setup.S
> @@ -112,12 +112,13 @@ gafr_set: .long 0x08600000
> .globl lowlevel_init
> lowlevel_init:
>
> - /* set output and direction of pins */
> - ldr r0, PPC_BASE
> - ldr r1, pin_set_out
> - str r1, [r0, #PPSR]
> - ldr r1, pin_set_dir
> - str r1, [r0, #PPDR]
> +
> + /* this is required for flashing */
> + ldr r0, PPC_BASE
> + ldr r1, pin_set_out
> + str r1, [r0, #PPSR]
> + ldr r1, pin_set_dir
> + str r1, [r0, #PPDR]
>
> /* Setting up the memory and stuff */
> /***********************************/
> @@ -190,6 +191,11 @@ lowlevel_init:
> ldr r3, [r2]
> .endr
>
> + ldr r2, [r0, #MDCNFG]
> + orr r2, r2, #0x00000003
> + orr r2, r2, #0x00030000
> + str r2, [r0, #MDCNFG]
> +
> ldr r1, msc0
> str r1, [r0, #MSC0]
> ldr r1, msc1
> @@ -198,13 +204,7 @@ lowlevel_init:
> str r1, [r0, #MSC2]
> ldr r1, smcnfg
> str r1, [r0, #SMCNFG]
> - ldr r1, mdcnfg
> - str r1, [r0, #MDCNFG]
> ldr r1, mecr
> str r1, [r0, #MECR]
>
> - /* enable SDRAM */
> - orr r1, r1, #0x00000001
> - str r1, [r0, #MDCNFG]
> -
> mov pc, lr
> --
> 1.7.3.2
More information about the U-Boot
mailing list