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x86: apl: Avoid accessing the PCI bus before it is probed

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The PCI bus is not actually probed by the time the ofdata_to_platdata()
method is called since that happens in the uclass's post_probe() method.
Update the PMC and P2SB drivers to access the bus in its probe() method.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2019-12-29 21:19:13 -07:00
parent 1058eec0f4
commit 3d9acea3d9
2 changed files with 29 additions and 11 deletions
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20
arch/x86/cpu/apollolake/p2sb.c
View file

@ -106,11 +106,6 @@ int apl_p2sb_ofdata_to_platdata(struct udevice *dev)
if (plat->bdf < 0)
return log_msg_ret("Cannot get p2sb PCI address",
plat->bdf);
} else {
plat->mmio_base = dev_read_addr_pci(dev);
/* Don't set BDF since it should not be used */
if (!plat->mmio_base || plat->mmio_base == FDT_ADDR_T_NONE)
return -EINVAL;
}
#else
plat->mmio_base = plat->dtplat.early_regs[0];
@ -124,10 +119,19 @@ int apl_p2sb_ofdata_to_platdata(struct udevice *dev)
static int apl_p2sb_probe(struct udevice *dev)
{
if (spl_phase() == PHASE_TPL)
if (spl_phase() == PHASE_TPL) {
return apl_p2sb_early_init(dev);
else if (spl_phase() == PHASE_SPL)
return apl_p2sb_spl_init(dev);
} else {
struct p2sb_platdata *plat = dev_get_platdata(dev);
plat->mmio_base = dev_read_addr_pci(dev);
/* Don't set BDF since it should not be used */
if (!plat->mmio_base || plat->mmio_base == FDT_ADDR_T_NONE)
return -EINVAL;
if (spl_phase() == PHASE_SPL)
return apl_p2sb_spl_init(dev);
}
return 0;
}

20
arch/x86/cpu/apollolake/pmc.c
View file

@ -119,8 +119,16 @@ int apl_pmc_ofdata_to_uc_platdata(struct udevice *dev)
ret = dev_read_u32_array(dev, "early-regs", base, ARRAY_SIZE(base));
if (ret)
return log_msg_ret("Missing/short early-regs", ret);
upriv->pmc_bar0 = (void *)base[0];
upriv->pmc_bar2 = (void *)base[2];
if (spl_phase() == PHASE_TPL) {
upriv->pmc_bar0 = (void *)base[0];
upriv->pmc_bar2 = (void *)base[2];
/* Since PCI is not enabled, we must get the BDF manually */
plat->bdf = pci_get_devfn(dev);
if (plat->bdf < 0)
return log_msg_ret("Cannot get PMC PCI address",
plat->bdf);
}
upriv->acpi_base = base[4];
/* Since PCI is not enabled, we must get the BDF manually */
@ -187,8 +195,14 @@ static int enable_pmcbar(struct udevice *dev)
static int apl_pmc_probe(struct udevice *dev)
{
if (spl_phase() == PHASE_TPL)
if (spl_phase() == PHASE_TPL) {
return enable_pmcbar(dev);
} else {
struct acpi_pmc_upriv *upriv = dev_get_uclass_priv(dev);
upriv->pmc_bar0 = (void *)dm_pci_read_bar32(dev, 0);
upriv->pmc_bar2 = (void *)dm_pci_read_bar32(dev, 2);
}
return 0;
}