[U-Boot] [PATCH v5 29/30] efi_loader: Call fdt preparation functions

Alexander Graf
2016-03-04T00:10:13Z

We have a nice framework around image fils to prepare a device tree
for OS execution. That one patches in missing device tree nodes and
fixes up the memory range bits.

We need to call that one from the EFI boot path too to get all those
nice fixups. This patch adds the call.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
cmd/bootefi.c | 8 ++++++++
common/image-fdt.c | 8 +++++---
2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index 2a40fb0..7fce1d0 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -92,6 +92,7 @@ static unsigned long do_bootefi_exec(void *efi)
{
ulong (*entry)(void *image_handle, struct efi_system_table *st);
ulong fdt_pages, fdt_size, fdt_start, fdt_end;
+ bootm_headers_t img = { 0 };

/*
* gd lives in a fixed register which may get clobbered while we execute
@@ -102,6 +103,13 @@ static unsigned long do_bootefi_exec(void *efi)
/* Update system table to point to our currently loaded FDT */

if (working_fdt) {
+ /* Prepare fdt for payload */
+ if (image_setup_libfdt(&img, working_fdt, 0, NULL)) {
+ printf("ERROR: Failed to process device tree\n");
+ return -EINVAL;
+ }
+
+ /* Link to it in the efi tables */
systab.tables[0].guid = EFI_FDT_GUID;
systab.tables[0].table = working_fdt;
systab.nr_tables = 1;
diff --git a/common/image-fdt.c b/common/image-fdt.c
index 79fa655..5a1b432 100644
--- a/common/image-fdt.c
+++ b/common/image-fdt.c
@@ -502,8 +502,9 @@ int image_setup_libfdt(bootm_headers_t *images, void *blob,
fdt_fixup_ethernet(blob);

/* Delete the old LMB reservation */
- lmb_free(lmb, (phys_addr_t)(u32)(uintptr_t)blob,
- (phys_size_t)fdt_totalsize(blob));
+ if (lmb)
+ lmb_free(lmb, (phys_addr_t)(u32)(uintptr_t)blob,
+ (phys_size_t)fdt_totalsize(blob));

ret = fdt_shrink_to_minimum(blob);
if (ret < 0)
@@ -515,7 +516,8 @@ int image_setup_libfdt(bootm_headers_t *images, void *blob,
fdt_set_totalsize(blob, of_size);
}
/* Create a new LMB reservation */
- lmb_reserve(lmb, (ulong)blob, of_size);
+ if (lmb)
+ lmb_reserve(lmb, (ulong)blob, of_size);

fdt_initrd(blob, *initrd_start, *initrd_end);
if (!ft_verify_fdt(blob))
--
1.8.5.6