On 9/25/21 2:30 AM, Simon Glass wrote:
It is useful to see some basic EFI info with the command as it forms part
of the information about a board.
Add a hook for this and show the table address as a start.
While here, fix an invalid cast in setup_efi_info(). Note that this
function is using a data structure defined by Linux so we cannot change
it. Also note that ulong is used since this is the standard in U-Boot
(>6k uses), despite there being quite a bit of the more verbose uintptr_t
(930 uses).
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v2:
- Update commit message to mention why the data structure is like it is
- Update commit message to mention why ulong is used
arch/x86/cpu/efi/payload.c | 13 +++++++++++--
arch/x86/include/asm/efi.h | 7 +++++++
arch/x86/lib/Makefile | 1 +
arch/x86/lib/bdinfo.c | 22 ++++++++++++++++++++++
4 files changed, 41 insertions(+), 2 deletions(-)
create mode 100644 arch/x86/lib/bdinfo.c
diff --git a/arch/x86/cpu/efi/payload.c b/arch/x86/cpu/efi/payload.c
index 9a73b768e9b..3a9f7d72868 100644
--- a/arch/x86/cpu/efi/payload.c
+++ b/arch/x86/cpu/efi/payload.c
@@ -280,15 +280,24 @@ void setup_efi_info(struct efi_info *efi_info)
}
efi_info->efi_memdesc_size = map->desc_size;
efi_info->efi_memdesc_version = map->version;
- efi_info->efi_memmap = (u32)(map->desc);
+ efi_info->efi_memmap = (ulong)(map->desc);
efi_info->efi_memmap_size = size - sizeof(struct efi_entry_memmap);
#ifdef CONFIG_EFI_STUB_64BIT
efi_info->efi_systab_hi = table->sys_table >> 32;
- efi_info->efi_memmap_hi = (u64)(u32)(map->desc) >> 32;
+ efi_info->efi_memmap_hi = (u64)(ulong)map->desc >> 32;
signature = EFI64_LOADER_SIGNATURE;
#else
signature = EFI32_LOADER_SIGNATURE;
#endif
memcpy(&efi_info->efi_loader_signature, signature, 4);
}
+
+void efi_show_bdinfo(void)
+{
+ struct efi_entry_systable *table = NULL;
+ int size, ret;
+
+ ret = efi_info_get(EFIET_SYS_TABLE, (void **)&table, &size);
+ bdinfo_print_num_l("efi_table", (ulong)table);
Some properties of the UEFI API depend on the UEFI API version
(EFI_SYSTEM_TABLE.FirmwareRevision)
The revision of the EFI_FILE_PROTOCOL may also be relevant for U-Boot.
Maybe you want to add this information in a later patch.
Reviewed-by: Heinrich Schuchardt <xypron.g...@gmx.de>
+}
diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index c1735e4dc5f..dfd858b78ba 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -29,4 +29,11 @@ void setup_video(struct screen_info *screen_info);
*/
void setup_efi_info(struct efi_info *efi_info);
+/**
+ * efi_show_bdinfo() - Show information about EFI for the 'bdinfo' command
+ *
+ * This looks up the EFI table pointer and shows related info
+ */
+void efi_show_bdinfo(void);
+
#endif
diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 65d9b3bd6a3..18757b29aa9 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -3,6 +3,7 @@
# (C) Copyright 2002-2006
# Wolfgang Denk, DENX Software Engineering, w...@denx.de.
+obj-y += bdinfo.o
ifndef CONFIG_X86_64
ifndef CONFIG_TPL_BUILD
obj-y += bios.o
diff --git a/arch/x86/lib/bdinfo.c b/arch/x86/lib/bdinfo.c
new file mode 100644
index 00000000000..0cb79b01bd3
--- /dev/null
+++ b/arch/x86/lib/bdinfo.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * x86-specific information for the 'bd' command
+ *
+ * Copyright 2021 Google LLC
+ */
+
+#include <common.h>
+#include <efi.h>
+#include <init.h>
+#include <asm/efi.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void arch_print_bdinfo(void)
+{
+ bdinfo_print_num_l("prev table", gd->arch.table);
+
+ if (IS_ENABLED(CONFIG_EFI_STUB))
+ efi_show_bdinfo();
+}
