Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
index 6920033..c382a48 100644
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* EFI stub implementation that is shared by arm and arm64 architectures.
* This should be #included by the EFI stub implementation files.
@@ -6,10 +7,6 @@
* Roy Franz <roy.franz@linaro.org
* Copyright (C) 2013 Red Hat, Inc.
* Mark Salter <msalter@redhat.com>
- *
- * This file is part of the Linux kernel, and is made available under the
- * terms of the GNU General Public License version 2.
- *
*/
#include <linux/efi.h>
@@ -33,7 +30,7 @@
#define EFI_RT_VIRTUAL_SIZE SZ_512M
#ifdef CONFIG_ARM64
-# define EFI_RT_VIRTUAL_LIMIT TASK_SIZE_64
+# define EFI_RT_VIRTUAL_LIMIT DEFAULT_MAP_WINDOW_64
#else
# define EFI_RT_VIRTUAL_LIMIT TASK_SIZE
#endif
@@ -69,6 +66,31 @@
return si;
}
+void install_memreserve_table(efi_system_table_t *sys_table_arg)
+{
+ struct linux_efi_memreserve *rsv;
+ efi_guid_t memreserve_table_guid = LINUX_EFI_MEMRESERVE_TABLE_GUID;
+ efi_status_t status;
+
+ status = efi_call_early(allocate_pool, EFI_LOADER_DATA, sizeof(*rsv),
+ (void **)&rsv);
+ if (status != EFI_SUCCESS) {
+ pr_efi_err(sys_table_arg, "Failed to allocate memreserve entry!\n");
+ return;
+ }
+
+ rsv->next = 0;
+ rsv->size = 0;
+ atomic_set(&rsv->count, 0);
+
+ status = efi_call_early(install_configuration_table,
+ &memreserve_table_guid,
+ rsv);
+ if (status != EFI_SUCCESS)
+ pr_efi_err(sys_table_arg, "Failed to install memreserve config table!\n");
+}
+
+
/*
* This function handles the architcture specific differences between arm and
* arm64 regarding where the kernel image must be loaded and any memory that
@@ -235,6 +257,8 @@
}
}
+ install_memreserve_table(sys_table);
+
new_fdt_addr = fdt_addr;
status = allocate_new_fdt_and_exit_boot(sys_table, handle,
&new_fdt_addr, efi_get_max_fdt_addr(dram_base),
@@ -340,6 +364,11 @@
paddr = in->phys_addr;
size = in->num_pages * EFI_PAGE_SIZE;
+ if (novamap()) {
+ in->virt_addr = in->phys_addr;
+ continue;
+ }
+
/*
* Make the mapping compatible with 64k pages: this allows
* a 4k page size kernel to kexec a 64k page size kernel and