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https://github.com/brain-hackers/u-boot-brain
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ba7b38a529
FSP builds a series of data structures called the Hand-Off-Blocks (HOBs) as it progresses through initializing the silicon. These data structures conform to the HOB format as described in the Platform Initialization (PI) specification Volume 3 Shared Architectual Elements specification, which is part of the UEFI specification. Create a simple command to parse the HOB list to display the HOB address, type and length in bytes. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
68 lines
1.4 KiB
C
68 lines
1.4 KiB
C
/*
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* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <command.h>
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#include <linux/compiler.h>
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#include <asm/arch/fsp/fsp_support.h>
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DECLARE_GLOBAL_DATA_PTR;
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static char *hob_type[] = {
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"reserved",
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"Hand-off",
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"Memory Allocation",
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"Resource Descriptor",
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"GUID Extension",
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"Firmware Volumn",
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"CPU",
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"Memory Pool",
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"reserved",
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"Firmware Volumn 2",
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"Load PEIM Unused",
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"UEFI Capsule",
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};
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int do_hob(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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union hob_pointers_t hob;
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u16 type;
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char *desc;
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int i = 0;
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hob.raw = (u8 *)gd->arch.hob_list;
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printf("HOB list address: 0x%08x\n\n", (unsigned int)hob.raw);
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printf("No. | Address | Type | Length in Bytes\n");
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printf("----|----------|---------------------|----------------\n");
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while (!END_OF_HOB(hob)) {
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printf("%-3d | %08x | ", i, (unsigned int)hob.raw);
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type = hob.hdr->type;
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if (type == HOB_TYPE_UNUSED)
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desc = "*Unused*";
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else if (type == HOB_TYPE_EOH)
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desc = "**END OF HOB**";
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else if (type >= 0 && type <= ARRAY_SIZE(hob_type))
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desc = hob_type[type];
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else
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desc = "!!!Invalid Type!!!";
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printf("%-19s | %-15d\n", desc, hob.hdr->len);
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hob.raw = GET_NEXT_HOB(hob);
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i++;
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}
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return 0;
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}
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/* -------------------------------------------------------------------- */
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U_BOOT_CMD(
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hob, 1, 1, do_hob,
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"print FSP Hand-Off Block information",
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""
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);
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