>-----Original Message-----
>From: Bin Meng <[email protected]>
>Sent: Thursday, February 18, 2021 9:28 PM
>To: Simon Glass <[email protected]>; Alexander Graf <[email protected]>;
>Priyanka Jain <[email protected]>
>Cc: U-Boot Mailing List <[email protected]>; Tom Rini
><[email protected]>; Heiko Schocher <[email protected]>
>Subject: [PATCH v2 19/38] pci: mpc85xx: Wrap LAW programming with
>CONFIG_FSL_LAW
>
>For the QEMU ppce500 machine, LAW registers are not implemented hence
>CONFIG_FSL_LAW is not turned on and all LAW APIs are not available. We
>should wrap all LAW registers programming in the mpc85xx PCI driver with
>CONFIG_FSL_LAW.
>
>Signed-off-by: Bin Meng <[email protected]>
>---
>
>(no changes since v1)
>
> drivers/pci/pci_mpc85xx.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
>diff --git a/drivers/pci/pci_mpc85xx.c b/drivers/pci/pci_mpc85xx.c index
>ab6ff45..7387a1e 100644
>--- a/drivers/pci/pci_mpc85xx.c
>+++ b/drivers/pci/pci_mpc85xx.c
>@@ -46,6 +46,7 @@ static int mpc85xx_pci_dm_write_config(struct udevice
>*dev, pci_dev_t bdf,
> return 0;
> }
>
>+#ifdef CONFIG_FSL_LAW
> static int
> mpc85xx_pci_dm_setup_laws(struct pci_region *io, struct pci_region *mem,
> struct pci_region *pre)
>@@ -68,6 +69,7 @@ mpc85xx_pci_dm_setup_laws(struct pci_region *io,
>struct pci_region *mem,
>
> return 0;
> }
>+#endif
>
> static int mpc85xx_pci_dm_probe(struct udevice *dev) { @@ -85,7 +87,9
>@@ static int mpc85xx_pci_dm_probe(struct udevice *dev)
> return -EINVAL;
> }
>
>+#ifdef CONFIG_FSL_LAW
> mpc85xx_pci_dm_setup_laws(io, mem, pre);
>+#endif
>
> pcix = priv->cfg_addr;
> /* BAR 1: memory */
>--
>2.7.4
LAWs are required to be initialized while running on actual boards.
For QEMU, may be you can create config like CONFIG_FSL_BYPASS_LAW
Priyanka
<snip>
