acpi: Use the U-Boot ACPI ID and version

The ACPI spec is a little confusing as to what should go in the 'creator_id' field: Vendor ID of utility that created the table. For tables containing Definition Blocks, this is the ID for the ASL Compiler. Even though some of the tables are compiled by the Intel ASL compiler (generally DSDT), U-Boot generates many of the tables itself. So it should be listed as the creator. Rename the constant and use "UBOO", as per the UEFI forum. For the version, use (year << 16) | (patchlevel << 8) which seems to be a common approach. This mostly fixes https://concept.u-boot.org/u-boot/u-boot/-/issues/16 but the question of the logo remains. Series-to: concept Series-cc: heinrich Cover-letter: ACPI fixes This series collects a few fix-ups for the recent BGRT series and tweaks the ACPI tables to use U-Boot as the 'creator' of the tables. It also adds a new logo for U-Boot (with text below). END Signed-off-by: Simon Glass <sjg@chromium.org> Link: https://uefi.org/ACPI_ID_List?acpi_search=u-boot
acpi: Check ACPI revision before accessing XSDT
2025-08-20 08:03:47 -06:00 · 2025-08-20 08:03:47 -06:00 · 2025-08-20 08:03:47 -06:00 · 2025-08-20 06:09:58 -06:00
8 changed files with 325 additions and 32 deletions
--- a/arch/x86/lib/acpi_nhlt.c
+++ b/arch/x86/lib/acpi_nhlt.c
@@ -408,7 +408,7 @@ int nhlt_serialise_oem_overrides(struct acpi_ctx *ctx, struct nhlt *nhlt,
 		memcpy(header->oem_table_id, oem_table_id, oem_table_id_len);
 	}
 	header->oem_revision = oem_revision;
-	memcpy(header->creator_id, ASLC_ID, 4);
+	memcpy(header->creator_id, ACPI_CREATOR, 4);

 	cur.buf = (void *)(header + 1);
 	cur.start = (void *)header;
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -224,7 +224,7 @@ static int acpi_write_tpm2(struct acpi_ctx *ctx,

 	/* Fill out header fields. */
 	acpi_fill_header(header, "TPM2");
-	memcpy(header->creator_id, ASLC_ID, 4);
+	memcpy(header->creator_id, ACPI_CREATOR, 4);

 	header->length = sizeof(struct acpi_tpm2);
 	header->revision = acpi_get_table_revision(ACPITAB_TPM2);
--- a/include/acpi/acpi_table.h
+++ b/include/acpi/acpi_table.h
@@ -18,10 +18,7 @@
 #define RSDP_SIG		"RSD PTR "	/* RSDP pointer signature */
 #define OEM_ID			"U-BOOT"	/* U-Boot */
 #define OEM_TABLE_ID		"U-BOOTBL"	/* U-Boot Table */
-#define ASLC_ID			"INTL"		/* Intel ASL Compiler */
-
-/* TODO(sjg@chromium.org): Figure out how to get compiler revision */
-#define ASL_REVISION	0
+#define ACPI_CREATOR		"UBOO"		/* U-Boot */

 #define ACPI_RSDP_REV_ACPI_1_0	0
 #define ACPI_RSDP_REV_ACPI_2_0	2
--- a/lib/acpi/acpi.c
+++ b/lib/acpi/acpi.c
@@ -10,6 +10,7 @@
 #include <errno.h>
 #include <mapmem.h>
 #include <tables_csum.h>
+#include <version.h>
 #include <version_string.h>
 #include <acpi/acpi_table.h>
 #include <asm/global_data.h>
@@ -81,7 +82,7 @@ static int setup_search(struct acpi_rsdt **rsdtp, struct acpi_xsdt **xsdtp)
 		return -ENOENT;
 	if (!acpi_valid_rsdp(rsdp))
 		return -EINVAL;
-	if (rsdp->xsdt_address) {
+	if (rsdp->revision > 1 && rsdp->xsdt_address) {
 		xsdt = nomap_sysmem(rsdp->xsdt_address, 0);
 		len = xsdt->header.length - sizeof(xsdt->header);
 		count = len / sizeof(u64);
@@ -174,8 +175,9 @@ void acpi_fill_header(struct acpi_table_header *header, char *signature)
 	memcpy(header->oem_id, OEM_ID, 6);
 	memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
 	header->oem_revision = OEM_REVISION;
-	memcpy(header->creator_id, ASLC_ID, 4);
-	header->creator_revision = ASL_REVISION;
+	memcpy(header->creator_id, ACPI_CREATOR, 4);
+	header->creator_revision = (U_BOOT_VERSION_NUM << 16) |
+			 (U_BOOT_VERSION_NUM_PATCH << 8);
 }

 void acpi_align(struct acpi_ctx *ctx)
--- a/lib/acpi/acpi_table.c
+++ b/lib/acpi/acpi_table.c
@@ -126,7 +126,7 @@ int acpi_write_fadt(struct acpi_ctx *ctx, const struct acpi_writer *entry)
 	header->revision = acpi_get_table_revision(ACPITAB_FADT);
 	memcpy(header->oem_id, OEM_ID, 6);
 	memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
-	memcpy(header->creator_id, ASLC_ID, 4);
+	memcpy(header->creator_id, ACPI_CREATOR, 4);
 	header->creator_revision = 1;
 	fadt->minor_revision = 2;

--- a/lib/acpi/bgrt_image.bmp
+++ b/lib/acpi/bgrt_image.bmp
--- a/test/dm/acpi.c
+++ b/test/dm/acpi.c
@@ -13,6 +13,7 @@
 #include <malloc.h>
 #include <mapmem.h>
 #include <tables_csum.h>
+#include <version.h>
 #include <version_string.h>
 #include <acpi/acpigen.h>
 #include <acpi/acpi_device.h>
@@ -25,6 +26,9 @@

 #define BUF_SIZE		4096

+#define CREATOR_REVISION	((U_BOOT_VERSION_NUM << 16) | \
+				 (U_BOOT_VERSION_NUM_PATCH << 8))
+
 #define OEM_REVISION ((((version_num / 1000) % 10) << 28) | \
 		      (((version_num / 100) % 10) << 24) | \
 		      (((version_num / 10) % 10) << 20) | \
@@ -263,8 +267,8 @@ static int dm_test_acpi_fill_header(struct unit_test_state *uts)
 	ut_asserteq_mem(OEM_TABLE_ID, hdr.oem_table_id,
 			sizeof(hdr.oem_table_id));
 	ut_asserteq(OEM_REVISION, hdr.oem_revision);
-	ut_asserteq_mem(ASLC_ID, hdr.creator_id, sizeof(hdr.creator_id));
-	ut_asserteq(ASL_REVISION, hdr.creator_revision);
+	ut_asserteq_mem(ACPI_CREATOR, hdr.creator_id, sizeof(hdr.creator_id));
+	ut_asserteq(CREATOR_REVISION, hdr.creator_revision);

 	return 0;
 }
@@ -417,22 +421,27 @@ static int dm_test_acpi_cmd_list(struct unit_test_state *uts)
 	ut_assert_nextline("RSDP  %16lx  %5zx  v02 U-BOOT", addr,
 			   sizeof(struct acpi_rsdp));
 	addr = ALIGN(addr + sizeof(struct acpi_rsdp), 16);
-	ut_assert_nextline("RSDT  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0",
+	ut_assert_nextline("RSDT  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x",
 			   addr, sizeof(struct acpi_table_header) +
-			   3 * sizeof(u32), OEM_REVISION);
+			   3 * sizeof(u32), OEM_REVISION,
+			   CREATOR_REVISION);
 	addr = ALIGN(addr + sizeof(struct acpi_rsdt), 16);
-	ut_assert_nextline("XSDT  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0",
+	ut_assert_nextline("XSDT  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x",
 			   addr, sizeof(struct acpi_table_header) +
-			   3 * sizeof(u64), OEM_REVISION);
+			   3 * sizeof(u64), OEM_REVISION,
+			   CREATOR_REVISION);
 	addr = ALIGN(addr + sizeof(struct acpi_xsdt), 64);
-	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0",
-			   addr, sizeof(struct acpi_dmar), OEM_REVISION);
+	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x",
+			   addr, sizeof(struct acpi_dmar), OEM_REVISION,
+			   CREATOR_REVISION);
 	addr = ALIGN(addr + sizeof(struct acpi_dmar), 16);
-	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0",
-			   addr, sizeof(struct acpi_dmar), OEM_REVISION);
+	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x",
+			   addr, sizeof(struct acpi_dmar), OEM_REVISION,
+			   CREATOR_REVISION);
 	addr = ALIGN(addr + sizeof(struct acpi_dmar), 16);
-	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0",
-			   addr, sizeof(struct acpi_dmar), OEM_REVISION);
+	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x",
+			   addr, sizeof(struct acpi_dmar), OEM_REVISION,
+			   CREATOR_REVISION);
 	ut_assert_console_end();
 	unmap_sysmem(buf);
 	free(buf);
@@ -461,22 +470,27 @@ static int dm_test_acpi_cmd_list_chksum(struct unit_test_state *uts)
 	ut_assert_nextline("RSDP  %16lx  %5zx  v02 U-BOOT  OK  OK", addr,
 			   sizeof(struct acpi_rsdp));
 	addr = ALIGN(addr + sizeof(struct acpi_rsdp), 16);
-	ut_assert_nextline("RSDT  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0  OK",
+	ut_assert_nextline("RSDT  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x  OK",
 			   addr, sizeof(struct acpi_table_header) +
-			   3 * sizeof(u32), OEM_REVISION);
+			   3 * sizeof(u32), OEM_REVISION,
+			   CREATOR_REVISION);
 	addr = ALIGN(addr + sizeof(struct acpi_rsdt), 16);
-	ut_assert_nextline("XSDT  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0  OK",
+	ut_assert_nextline("XSDT  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x  OK",
 			   addr, sizeof(struct acpi_table_header) +
-			   3 * sizeof(u64), OEM_REVISION);
+			   3 * sizeof(u64), OEM_REVISION,
+			   CREATOR_REVISION);
 	addr = ALIGN(addr + sizeof(struct acpi_xsdt), 64);
-	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0  OK",
-			   addr, sizeof(struct acpi_dmar), OEM_REVISION);
+	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x  OK",
+			   addr, sizeof(struct acpi_dmar), OEM_REVISION,
+			   CREATOR_REVISION);
 	addr = ALIGN(addr + sizeof(struct acpi_dmar), 16);
-	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0  OK",
-			   addr, sizeof(struct acpi_dmar), OEM_REVISION);
+	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x  OK",
+			   addr, sizeof(struct acpi_dmar), OEM_REVISION,
+			   CREATOR_REVISION);
 	addr = ALIGN(addr + sizeof(struct acpi_dmar), 16);
-	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x INTL 0  OK",
-			   addr, sizeof(struct acpi_dmar), OEM_REVISION);
+	ut_assert_nextline("DMAR  %16lx  %5zx  v01 U-BOOT U-BOOTBL %x UBOO %x  OK",
+			   addr, sizeof(struct acpi_dmar), OEM_REVISION,
+			   CREATOR_REVISION);
 	ut_assert_console_end();
 	ut_assert_console_end();
 	unmap_sysmem(buf);
--- a/tools/logos/u_boot_logo_text.svg
+++ b/tools/logos/u_boot_logo_text.svg
@@ -0,0 +1,280 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- SPDX-License-Identifier: CC-BY-SA-4.0 -->
+
+<!-- Copyright (c) 2018, Heinrich Schuchardt <xypron.glpk@gmx.de> -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
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+   sodipodi:docname="u-boot_logo.svg"
+   inkscape:export-filename="tools/logos/u-boot_logo.png"
+   inkscape:export-xdpi="41.290001"
+   inkscape:export-ydpi="41.290001">
+  <title
+     id="title30">U-Boot Logo</title>
+  <metadata
+     id="metadata31">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title>U-Boot Logo</dc:title>
+        <cc:license
+           rdf:resource="http://creativecommons.org/licenses/by-sa/4.0/" />
+        <dc:creator>
+          <cc:Agent>
+            <dc:title>Heinrich Schuchardt &lt;xypron.glpk@gmx.de&gt;</dc:title>
+          </cc:Agent>
+        </dc:creator>
+        <dc:date>May 21st, 2018</dc:date>
+      </cc:Work>
+      <cc:License
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+        <cc:permits
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+        <cc:requires
+           rdf:resource="http://creativecommons.org/ns#Notice" />
+        <cc:requires
+           rdf:resource="http://creativecommons.org/ns#Attribution" />
+        <cc:permits
+           rdf:resource="http://creativecommons.org/ns#DerivativeWorks" />
+        <cc:requires
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Author	SHA1	Message	Date
Simon Glass	574aef4bbd	acpi: Use the U-Boot ACPI ID and version The ACPI spec is a little confusing as to what should go in the 'creator_id' field: Vendor ID of utility that created the table. For tables containing Definition Blocks, this is the ID for the ASL Compiler. Even though some of the tables are compiled by the Intel ASL compiler (generally DSDT), U-Boot generates many of the tables itself. So it should be listed as the creator. Rename the constant and use "UBOO", as per the UEFI forum. For the version, use (year << 16) \| (patchlevel << 8) which seems to be a common approach. This mostly fixes https://concept.u-boot.org/u-boot/u-boot/-/issues/16 but the question of the logo remains. Series-to: concept Series-cc: heinrich Cover-letter: ACPI fixes This series collects a few fix-ups for the recent BGRT series and tweaks the ACPI tables to use U-Boot as the 'creator' of the tables. It also adds a new logo for U-Boot (with text below). END Signed-off-by: Simon Glass <sjg@chromium.org> Link: https://uefi.org/ACPI_ID_List?acpi_search=u-boot	2025-08-20 08:03:47 -06:00
Simon Glass	d390d1316f	acpi: Check ACPI revision before accessing XSDT This field is only present in revisions after zero, so add the missing check. This avoids a buffer overrun with a revision 1.0 ACPI table. Signed-off-by: Simon Glass <sjg@chromium.org> Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>	2025-08-20 08:03:47 -06:00
Simon Glass	e3f391bef6	acpi: Use the logo with text underneath Rather than using the round logo used on stickers and coins, use the one with text underneath, to be consistent. Signed-off-by: Simon Glass <sjg@chromium.org>	2025-08-20 08:03:47 -06:00
Simon Glass	a7e6a6a346	tools: Add the logo with text under it This is obtained from[1] and is the official logo of the project when text is needed. Add it into the source tree. [1] https://commons.wikimedia.org/wiki/File:U-Boot_Logo.svg Signed-off-by: Simon Glass <sjg@chromium.org>	2025-08-20 06:09:58 -06:00