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| author | Binbin Zhou <zhoubinbin@loongson.cn> | 2022-12-10 17:40:05 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-12-14 03:41:53 +0300 |
| commit | 88d4d957edc707e037449ef71a58c6530a39d01e (patch) | |
| tree | ac4ac6210684cfd8162eb850f1f46f63e8208d8c /arch/loongarch/pci | |
| parent | a275a82dcd4024c75337db15d59ed039c31e21da (diff) | |
| download | linux-88d4d957edc707e037449ef71a58c6530a39d01e.tar.xz | |
LoongArch: Add FDT booting support from efi system table
Since commit 40cd01a9c324("efi/loongarch: libstub: remove dependency on
flattened DT"), we can parse the FDT from efi system table.
And now, LoongArch is coming to support booting with FDT, so we add the
relevant booting support as well as parameter parsing.
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/pci')
| -rw-r--r-- | arch/loongarch/pci/acpi.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/loongarch/pci/acpi.c b/arch/loongarch/pci/acpi.c index 8235ec92b41f..365f7de771cb 100644 --- a/arch/loongarch/pci/acpi.c +++ b/arch/loongarch/pci/acpi.c @@ -26,9 +26,12 @@ void pcibios_add_bus(struct pci_bus *bus) int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge) { - struct pci_config_window *cfg = bridge->bus->sysdata; - struct acpi_device *adev = to_acpi_device(cfg->parent); + struct acpi_device *adev = NULL; struct device *bus_dev = &bridge->bus->dev; + struct pci_config_window *cfg = bridge->bus->sysdata; + + if (!acpi_disabled) + adev = to_acpi_device(cfg->parent); ACPI_COMPANION_SET(&bridge->dev, adev); set_dev_node(bus_dev, pa_to_nid(cfg->res.start)); |