Re: [U-Boot] [PATCH v1 1/2] fsl_sata: Add the workaround for errata SATA-A001

[Kumar Gala]

On Apr 8, 2010, at 6:32 PM, Dave Liu wrote:

> After power on, the SATA host controller of P1022 Rev1 is configured
> in legacy mode instead of the expected enterprise mode.
> 
> Software needs to clear bit[28] of HControl register to change to
> enterprise mode after bringing the host offline.
> 
> Signed-off-by: Dave Liu <dave...@freescale.com>
> ---
> * address Kumar's comments
> 
> drivers/block/fsl_sata.c |   19 +++++++++++++++++++
> 1 files changed, 19 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/block/fsl_sata.c b/drivers/block/fsl_sata.c
> index abcda6f..896b2e6 100644
> --- a/drivers/block/fsl_sata.c
> +++ b/drivers/block/fsl_sata.c
> @@ -21,6 +21,7 @@
> #include <common.h>
> #include <command.h>
> #include <asm/io.h>
> +#include <asm/processor.h>
> #include <malloc.h>
> #include <libata.h>
> #include <fis.h>
> @@ -191,6 +192,24 @@ int init_sata(int dev)
>       /* Wait the controller offline */
>       ata_wait_register(&reg->hstatus, HSTATUS_ONOFF, 0, 1000);
> 
> +#if defined(CONFIG_FSL_SATA_V2) && defined(CONFIG_FSL_SATA_ERRATUM_A001)
> +     /* For P1022/1013 Rev1.0 silicon, after power on SATA host
> +      * controller is configured in legacy mode instead of
> +      * the expected enterprise mode. software needs to clear
> +      * bit[28] of HControl register to change to enterprise
> +      * mode from legacy mode.
> +      */

Add

        {

> +     u32 svr = get_svr();
> +     if (IS_SVR_REV(svr, 1, 0) &&
> +         ((SVR_SOC_VER(svr) == SVR_P1022) ||
> +          (SVR_SOC_VER(svr) == SVR_P1022_E) ||
> +          (SVR_SOC_VER(svr) == SVR_P1013) ||
> +          (SVR_SOC_VER(svr) == SVR_P1013_E))) {
> +             out_le32(&reg->hstatus, 0x20000000);
> +             out_le32(&reg->hcontrol, 0x00000100);
> +     }

        }

> +#endif
> +
>       /* Set the command header base address to CHBA register to tell DMA */
>       out_le32(&reg->chba, (u32)cmd_hdr & ~0x3);
> 
> -- 
> 1.6.4

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