[U-Boot] [RFC 1/1] efi_loader: relocate pointer to tables

[Heinrich Schuchardt]

When applying a virtual memory map we have to update the pointer to the
list of configuration tables.

Fixes: 4182a129ef73 ("efi_loader: allocate configuration table array")
Reported-by: Mark Kettenis <mark.kettenis at xs4all.nl>
Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
Hello Mark,

could you, please, test if this solves the problem.

Best regards

Heinrich
---
 lib/efi_loader/efi_runtime.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
index 06958f23fa..45b7809dec 100644
--- a/lib/efi_loader/efi_runtime.c
+++ b/lib/efi_loader/efi_runtime.c
@@ -360,6 +360,7 @@ static efi_status_t EFIAPI efi_set_virtual_address_map(
 		efi_physical_addr_t map_start = map->physical_start;
 		efi_physical_addr_t map_len = map->num_pages << EFI_PAGE_SHIFT;
 		efi_physical_addr_t map_end = map_start + map_len;
+		u64 off = map->virtual_start - map_start;
 
 		/* Adjust all mmio pointers in this region */
 		list_for_each(lhandle, &efi_runtime_mmio) {
@@ -370,11 +371,17 @@ static efi_status_t EFIAPI efi_set_virtual_address_map(
 					   link);
 			if ((map_start <= lmmio->paddr) &&
 			    (map_end >= lmmio->paddr)) {
-				u64 off = map->virtual_start - map_start;
 				uintptr_t new_addr = lmmio->paddr + off;
 				*lmmio->ptr = (void *)new_addr;
 			}
 		}
+		if ((map_start <= (uintptr_t)systab.tables) &&
+		    (map_end >= (uintptr_t)systab.tables)) {
+			char *ptr = (char *)systab.tables;
+
+			ptr += off;
+			systab.tables = (struct efi_configuration_table *)ptr;
+		}
 	}
 
 	/* Move the actual runtime code over */
-- 
2.18.0