[PATCH v2 1/1] spl: initialize PCI before booting

[Simon Glass]

On Mon, 24 Jul 2023 at 14:19, Heinrich Schuchardt
<heinrich.schuchardt at canonical.com> wrote:
>
> MMC, SATA, and USB may be using PCI based controllers.
> Initialize the PCI sub-system before trying to boot.
>
> Remove the initialization for NVMe that is now redundant.
>
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
> ---
> v2:
>         Centralize the PCI initialization
> ---
>  common/spl/spl.c      | 7 +++++++
>  common/spl/spl_nvme.c | 5 -----
>  2 files changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/common/spl/spl.c b/common/spl/spl.c
> index f09bb97781..0062f3f45d 100644
> --- a/common/spl/spl.c
> +++ b/common/spl/spl.c
> @@ -800,6 +800,13 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
>             IS_ENABLED(CONFIG_SPL_ATF))
>                 dram_init_banksize();
>
> +       if (CONFIG_IS_ENABLED(PCI)) {
> +               ret = pci_init();
> +               if (ret)
> +                       puts(SPL_TPL_PROMPT "Cannot initialize PCI\n");
> +               /* Don't fail. We still can try other boot methods. */

But which ones? This seems dubious to me, since there is no check (for
each loader) as to whether PCI is needed or not. If PCI cannot be set
up, we should probably return an error.

> +       }
> +
>         bootcount_inc();
>
>         /* Dump driver model states to aid analysis */
> diff --git a/common/spl/spl_nvme.c b/common/spl/spl_nvme.c
> index 2af63f1dc8..c8774d67ec 100644
> --- a/common/spl/spl_nvme.c
> +++ b/common/spl/spl_nvme.c
> @@ -7,7 +7,6 @@
>
>  #include <common.h>
>  #include <spl.h>
> -#include <init.h>
>  #include <nvme.h>
>
>  static int spl_nvme_load_image(struct spl_image_info *spl_image,
> @@ -15,10 +14,6 @@ static int spl_nvme_load_image(struct spl_image_info *spl_image,
>  {
>         int ret;
>
> -       ret = pci_init();
> -       if (ret < 0)
> -               return ret;
> -
>         ret = nvme_scan_namespace();
>         if (ret < 0)
>                 return ret;
> --
> 2.40.1
>

Regards,
Simon