Since acpi=force doesn't use dt fallback, it's meaningless to load dt
from comaand line option or from configuration table.
Skip loading dt when acpi=force option is used.
otherwise it could produce unnecessary error message
while scanning dt if passed dt's format is invalid.
Signed-off-by: Yeoreum Yun <yeoreum.yun@xxxxxxx>
---
drivers/firmware/efi/libstub/fdt.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/efi/libstub/fdt.c b/drivers/firmware/efi/libstub/fdt.c
index 6a337f1f8787..27291ef7c773 100644
--- a/drivers/firmware/efi/libstub/fdt.c
+++ b/drivers/firmware/efi/libstub/fdt.c
@@ -231,6 +231,8 @@ efi_status_t allocate_new_fdt_and_exit_boot(void *handle,
struct exit_boot_struct priv;
unsigned long fdt_addr = 0;
unsigned long fdt_size = 0;
+ bool acpi_force = false;
+
if (!efi_novamap) {
status = efi_alloc_virtmap(&priv.runtime_map, &desc_size,
@@ -241,13 +243,17 @@ efi_status_t allocate_new_fdt_and_exit_boot(void *handle,
}
}
+ if (strstr(cmdline_ptr, "acpi=force"))
+ acpi_force = true;
+
/*
* Unauthenticated device tree data is a security hazard, so ignore
* 'dtb=' unless UEFI Secure Boot is disabled. We assume that secure
* boot is enabled if we can't determine its state.
*/
if (!IS_ENABLED(CONFIG_EFI_ARMSTUB_DTB_LOADER) ||
- efi_get_secureboot() != efi_secureboot_mode_disabled) {
+ efi_get_secureboot() != efi_secureboot_mode_disabled ||
+ acpi_force) {
if (strstr(cmdline_ptr, "dtb="))
efi_err("Ignoring DTB from command line.\n");
} else {
@@ -261,7 +267,7 @@ efi_status_t allocate_new_fdt_and_exit_boot(void *handle,
if (fdt_addr) {
efi_info("Using DTB from command line\n");
- } else {
+ } else if (!acpi_force) {
/* Look for a device tree configuration table entry. */
fdt_addr = (uintptr_t)get_fdt(&fdt_size);
if (fdt_addr)
--
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}
