[U-Boot] [PATCH 15/25] x86: Add a simple command to show FSP HOB information

[Bin Meng]

============================8<============================
=> hob
HOB list address: 0x3f420000

 No. | Address  | Type                 | Length in Bytes
-----|----------|----------------------|-----------------
 0   | 3f420000 | Hand-off             | 56
 1   | 3f420038 | GUID Extension       | 240
 2   | 3f420128 | GUID Extension       | 728
 3   | 3f420400 | GUID Extension       | 120
 4   | 3f420478 | Resource Descriptor  | 48
 5   | 3f4204a8 | Resource Descriptor  | 48
 6   | 3f4204d8 | Resource Descriptor  | 48
 7   | 3f420508 | Resource Descriptor  | 48
 8   | 3f420538 | Resource Descriptor  | 48
 9   | 3f420568 | Resource Descriptor  | 48
 10  | 3f420598 | Memory Allocation    | 48
 11  | 3f4205c8 | Memory Allocation    | 48
 12  | 3f4205f8 | Memory Allocation    | 48
 13  | 3f420628 | GUID Extension       | 4120
 14  | 3f421640 | Memory Allocation    | 48
 15  | 3f421670 | GUID Extension       | 432
 16  | 3f421820 | Memory Allocation    | 48
 17  | 3f421850 | Memory Allocation    | 48
 18  | 3f421880 | Memory Allocation    | 48
 19  | 3f4218b0 | Memory Allocation    | 48
 20  | 3f4218e0 | Memory Allocation    | 48
 21  | 3f421910 | Memory Allocation    | 48
 22  | 3f421940 | Memory Pool          | 24
 23  | 3f421958 | Memory Allocation    | 48
 24  | 3f421988 | Memory Allocation    | 48
 25  | 3f4219b8 | Memory Allocation    | 48
 26  | 3f4219e8 | Memory Pool          | 1032
 27  | 3f421df0 | Memory Allocation    | 48
 28  | 3f421e20 | Memory Pool          | 272
============================>8============================

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
---
 arch/x86/lib/Makefile  |  1 +
 arch/x86/lib/cmd_hob.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 arch/x86/lib/cmd_hob.c

diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index 55de788..73262d7 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -10,6 +10,7 @@ obj-y += bios_asm.o
 obj-y += bios_interrupts.o
 obj-$(CONFIG_CMD_BOOTM) += bootm.o
 obj-y	+= cmd_boot.o
+obj-$(CONFIG_HAVE_FSP) += cmd_hob.o
 obj-y	+= gcc.o
 obj-y	+= init_helpers.o
 obj-y	+= interrupts.o
diff --git a/arch/x86/lib/cmd_hob.c b/arch/x86/lib/cmd_hob.c
new file mode 100644
index 0000000..bf3bd83
--- /dev/null
+++ b/arch/x86/lib/cmd_hob.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn at gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <linux/compiler.h>
+#include <asm/arch/fsp/fsp_support.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define HOB_TYPE_MIN	0
+#define HOB_TYPE_MAX	11
+
+static char *hob_type[] = {
+	"reserved",
+	"Hand-off",
+	"Memory Allocation",
+	"Resource Descriptor",
+	"GUID Extension",
+	"Firmware Volumn",
+	"CPU",
+	"Memory Pool",
+	"reserved",
+	"Firmware Volumn 2",
+	"Load PEIM Unused",
+	"UEFI Capsule",
+};
+
+int do_hob(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	EFI_PEI_HOB_POINTERS hob;
+	UINT16 type;
+	char *desc;
+	int i = 0;
+
+	hob.Raw = (UINT8 *)gd->arch.hob_list;
+
+	printf("HOB list address: 0x%08x\n\n", (unsigned int)hob.Raw);
+
+	printf(" No. | Address  | Type                 | Length in Bytes \n");
+	printf("-----|----------|----------------------|-----------------\n");
+	while (!END_OF_HOB_LIST(hob)) {
+		printf(" %-3d | %08x |", i, (unsigned int)hob.Raw);
+		type = hob.Header->HobType;
+		if (type == EFI_HOB_TYPE_UNUSED)
+			desc = "*Unused*";
+		else if (type == EFI_HOB_TYPE_END_OF_HOB_LIST)
+			desc = "**END OF HOB**";
+		else if (type >= HOB_TYPE_MIN && type <= HOB_TYPE_MAX)
+			desc = hob_type[type];
+		else
+			desc = "!!!Invalid Type!!!";
+		printf(" %-20s |", desc);
+		printf(" %-15d \n", hob.Header->HobLength);
+		hob.Raw = GET_NEXT_HOB(hob);
+		i++;
+	}
+
+	return 0;
+}
+
+/* -------------------------------------------------------------------- */
+
+U_BOOT_CMD(
+	hob,	1,	1,	do_hob,
+	"print FSP Hand-Off Block information",
+	""
+);
-- 
1.8.2.1