return uefi_call_wrapper(BS->InstallConfigurationTable, 2, &EfiDtbTableGuid, PHYSICAL_ADDRESS_TO_POINTER(state->addr));
}
+EFI_STATUS devicetree_install_from_memory(struct devicetree_state *state,
+ const VOID *dtb_buffer, UINTN dtb_length) {
+
+ EFI_STATUS err;
+
+ assert(state);
+ assert(dtb_buffer && dtb_length > 0);
+
+ err = LibGetSystemConfigurationTable(&EfiDtbTableGuid, &state->orig);
+ if (EFI_ERROR(err))
+ return EFI_UNSUPPORTED;
+
+ err = devicetree_allocate(state, dtb_length);
+ if (EFI_ERROR(err))
+ return err;
+
+ CopyMem(PHYSICAL_ADDRESS_TO_POINTER(state->addr), dtb_buffer, dtb_length);
+
+ err = devicetree_fixup(state, dtb_length);
+ if (EFI_ERROR(err))
+ return err;
+
+ return uefi_call_wrapper(BS->InstallConfigurationTable, 2, &EfiDtbTableGuid, PHYSICAL_ADDRESS_TO_POINTER(state->addr));
+}
+
void devicetree_cleanup(struct devicetree_state *state) {
EFI_STATUS err;
#include <efilib.h>
#include "cpio.h"
+#include "devicetree.h"
#include "disk.h"
#include "graphics.h"
#include "linux.h"
SECTION_LINUX,
SECTION_INITRD,
SECTION_SPLASH,
+ SECTION_DTB,
_SECTION_MAX,
};
[SECTION_LINUX] = (const CHAR8*) ".linux",
[SECTION_INITRD] = (const CHAR8*) ".initrd",
[SECTION_SPLASH] = (const CHAR8*) ".splash",
+ [SECTION_DTB] = (const CHAR8*) ".dtb",
NULL,
};
- UINTN cmdline_len = 0, linux_size, initrd_size, credential_initrd_size = 0, sysext_initrd_size = 0;
+ UINTN cmdline_len = 0, linux_size, initrd_size, dt_size;
+ UINTN credential_initrd_size = 0, sysext_initrd_size = 0;
_cleanup_freepool_ VOID *credential_initrd = NULL, *sysext_initrd = NULL;
- EFI_PHYSICAL_ADDRESS linux_base, initrd_base;
+ EFI_PHYSICAL_ADDRESS linux_base, initrd_base, dt_base;
+ _cleanup_(devicetree_cleanup) struct devicetree_state dt_state = {};
EFI_LOADED_IMAGE *loaded_image;
UINTN addrs[_SECTION_MAX] = {};
UINTN szs[_SECTION_MAX] = {};
initrd_size = szs[SECTION_INITRD];
initrd_base = initrd_size != 0 ? POINTER_TO_PHYSICAL_ADDRESS(loaded_image->ImageBase) + addrs[SECTION_INITRD] : 0;
+ dt_size = szs[SECTION_DTB];
+ dt_base = dt_size != 0 ? POINTER_TO_PHYSICAL_ADDRESS(loaded_image->ImageBase) + addrs[SECTION_DTB] : 0;
+
if (credential_initrd || sysext_initrd) {
/* If we have generated initrds dynamically, let's combine them with the built-in initrd. */
err = combine_initrd(
}
}
+ if (dt_size > 0) {
+ err = devicetree_install_from_memory(
+ &dt_state, PHYSICAL_ADDRESS_TO_POINTER(dt_base), dt_size);
+ if (EFI_ERROR(err))
+ log_error_stall(L"Error loading embedded devicetree: %r", err);
+ }
+
err = linux_exec(image, cmdline, cmdline_len,
PHYSICAL_ADDRESS_TO_POINTER(linux_base), linux_size,
PHYSICAL_ADDRESS_TO_POINTER(initrd_base), initrd_size);