[PATCH v4 12/21] upl: Add a command
Simon Glass
sjg at chromium.org
Thu Aug 8 00:47:30 CEST 2024
Add a 'upl' command to work with Universal Payload features. For now it
only supports reading and writing a handoff structure.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
(no changes since v1)
MAINTAINERS | 2 +
boot/Kconfig | 1 +
cmd/Kconfig | 7 ++
cmd/Makefile | 1 +
cmd/upl.c | 118 +++++++++++++++++++
doc/usage/cmd/upl.rst | 186 ++++++++++++++++++++++++++++++
doc/usage/index.rst | 1 +
include/asm-generic/global_data.h | 15 +++
test/boot/upl.c | 40 +++++++
9 files changed, 371 insertions(+)
create mode 100644 cmd/upl.c
create mode 100644 doc/usage/cmd/upl.rst
diff --git a/MAINTAINERS b/MAINTAINERS
index acb92bd3f87..4d17c966053 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1714,6 +1714,8 @@ M: Simon Glass <sjg at chromium.org>
S: Maintained
T: git https://source.denx.de/u-boot/custodians/u-boot-dm.git
F: boot/upl*
+F: cmd/upl.c
+F: doc/usage/cmd/upl.rst
F: include/upl.h
F: test/boot/upl.c
diff --git a/boot/Kconfig b/boot/Kconfig
index d5f1304490b..e37b08bf391 100644
--- a/boot/Kconfig
+++ b/boot/Kconfig
@@ -747,6 +747,7 @@ config BOOTMETH_SCRIPT
config UPL
bool "upl - Universal Payload Specification"
+ imply CMD_UPL
imply UPL_READ
imply UPL_WRITE
help
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 978f44eda42..8af136d2bd4 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -388,6 +388,13 @@ config CMD_SEAMA
help
Support reading NAND Seattle Image (SEAMA) images.
+config CMD_UPL
+ bool "upl - Universal Payload Specification"
+ help
+ Provides commands to deal with UPL payloads and handoff information.
+ U-Boot supports generating and accepting handoff information. The
+ mkimage tool will eventually support creating payloads.
+
config CMD_VBE
bool "vbe - Verified Boot for Embedded"
depends on BOOTMETH_VBE
diff --git a/cmd/Makefile b/cmd/Makefile
index 87133cc27a8..91227f1249c 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -189,6 +189,7 @@ obj-$(CONFIG_CMD_UBIFS) += ubifs.o
obj-$(CONFIG_CMD_UNIVERSE) += universe.o
obj-$(CONFIG_CMD_UNLZ4) += unlz4.o
obj-$(CONFIG_CMD_UNZIP) += unzip.o
+obj-$(CONFIG_CMD_UPL) += upl.o
obj-$(CONFIG_CMD_VIRTIO) += virtio.o
obj-$(CONFIG_CMD_WDT) += wdt.o
obj-$(CONFIG_CMD_LZMADEC) += lzmadec.o
diff --git a/cmd/upl.c b/cmd/upl.c
new file mode 100644
index 00000000000..c9745886507
--- /dev/null
+++ b/cmd/upl.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Commands for UPL handoff generation
+ *
+ * Copyright 2024 Google LLC
+ * Written by Simon Glass <sjg at chromium.org>
+ */
+
+#define LOG_CATEGORY UCLASS_BOOTSTD
+
+#include <abuf.h>
+#include <alist.h>
+#include <command.h>
+#include <display_options.h>
+#include <mapmem.h>
+#include <string.h>
+#include <upl.h>
+#include <dm/ofnode.h>
+#include <test/ut.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int do_upl_info(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ const struct upl *upl = gd_upl();
+
+ printf("UPL state: %sactive\n", upl ? "" : "in");
+ if (!upl)
+ return 0;
+ if (argc > 1 && !strcmp("-v", argv[1])) {
+ int i;
+
+ printf("fit %lx\n", upl->fit);
+ printf("conf_offset %x\n", upl->conf_offset);
+ for (i = 0; i < upl->image.count; i++) {
+ const struct upl_image *img =
+ alist_get(&upl->image, i, struct upl_image);
+
+ printf("image %d: load %lx size %lx offset %x: %s\n", i,
+ img->load, img->size, img->offset,
+ img->description);
+ }
+ }
+
+ return 0;
+}
+
+static int do_upl_write(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct upl s_upl, *upl = &s_upl;
+ struct unit_test_state uts;
+ struct abuf buf;
+ oftree tree;
+ ulong addr;
+ int ret;
+
+ upl_get_test_data(&uts, upl);
+
+ log_debug("Writing UPL\n");
+ ret = upl_create_handoff_tree(upl, &tree);
+ if (ret) {
+ log_err("Failed to write (err=%dE)\n", ret);
+ return CMD_RET_FAILURE;
+ }
+
+ log_debug("Flattening\n");
+ ret = oftree_to_fdt(tree, &buf);
+ if (ret) {
+ log_err("Failed to write (err=%dE)\n", ret);
+ return CMD_RET_FAILURE;
+ }
+ addr = map_to_sysmem(abuf_data(&buf));
+ printf("UPL handoff written to %lx size %lx\n", addr, abuf_size(&buf));
+ if (env_set_hex("upladdr", addr) ||
+ env_set_hex("uplsize", abuf_size(&buf))) {
+ printf("Cannot set env var\n");
+ return CMD_RET_FAILURE;
+ }
+
+ log_debug("done\n");
+
+ return 0;
+}
+
+static int do_upl_read(struct cmd_tbl *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct upl s_upl, *upl = &s_upl;
+ oftree tree;
+ ulong addr;
+ int ret;
+
+ if (argc < 1)
+ return CMD_RET_USAGE;
+ addr = hextoul(argv[1], NULL);
+
+ printf("Reading UPL at %lx\n", addr);
+ tree = oftree_from_fdt(map_sysmem(addr, 0));
+ ret = upl_read_handoff(upl, tree);
+ if (ret) {
+ log_err("Failed to read (err=%dE)\n", ret);
+ return CMD_RET_FAILURE;
+ }
+
+ return 0;
+}
+
+U_BOOT_LONGHELP(upl,
+ "info [-v] - Check UPL status\n"
+ "upl read <addr> - Read handoff information\n"
+ "upl write - Write handoff information");
+
+U_BOOT_CMD_WITH_SUBCMDS(upl, "Universal Payload support", upl_help_text,
+ U_BOOT_SUBCMD_MKENT(info, 2, 1, do_upl_info),
+ U_BOOT_SUBCMD_MKENT(read, 2, 1, do_upl_read),
+ U_BOOT_SUBCMD_MKENT(write, 1, 1, do_upl_write));
diff --git a/doc/usage/cmd/upl.rst b/doc/usage/cmd/upl.rst
new file mode 100644
index 00000000000..a64063d42d5
--- /dev/null
+++ b/doc/usage/cmd/upl.rst
@@ -0,0 +1,186 @@
+.. SPDX-License-Identifier: GPL-2.0+:
+
+upl command
+===========
+
+Synopsis
+--------
+
+::
+
+ upl write
+ upl read <addr>
+ upl info [-v]
+
+Description
+-----------
+
+The *upl* command is used to test U-Boot's support for the Universal Payload
+Specification (UPL) firmware standard. It allows creation of a fake handoff for
+use in testing.
+
+
+upl write
+~~~~~~~~~
+
+Write a fake UPL handoff structure. The `upladdr` environment variable is set to
+the address of this structure and `uplsize` is set to the size.
+
+
+upl read
+~~~~~~~~
+
+Read a UPL handoff structure into internal state. This allows testing that the
+handoff can be obtained.
+
+upl info
+~~~~~~~~
+
+Show basic information about usage of UPL:
+
+ UPL state
+ active or inactive (indicates whether U-Boot booted from UPL or not)
+
+ fit
+ Address of the FIT which was loaded
+
+ conf_offset 2a4
+ FIT offset of the chosen configuration
+
+For each image the following information is shown:
+
+ Image number
+ Images are numbered from 0
+
+ load
+ Address to which the image was loaded
+
+ size
+ Size of the loaded image
+
+ offset
+ FIT offset of the image
+
+ description
+ Description of the image
+
+
+Example
+-------
+
+This shows checking whether a UPL handoff was read at start-up::
+
+ => upl info
+ UPL state: active
+
+This shows how to use the command to write and display the handoff::
+
+ => upl write
+ UPL handoff written to bc8a5e0 size 662
+ => print upladdr
+ upladdr=bc8a5e0
+ => print uplsize
+ uplsize=662
+
+ > fdt addr ${upladdr}
+ Working FDT set to bc8a5e0
+ => fdt print
+ / {
+ #address-cells = <0x00000001>;
+ #size-cells = <0x00000001>;
+ options {
+ upl-params {
+ smbios = <0x00000123>;
+ acpi = <0x00000456>;
+ bootmode = "default", "s3";
+ addr-width = <0x0000002e>;
+ acpi-nvs-size = <0x00000100>;
+ };
+ upl-image {
+ fit = <0x00000789>;
+ conf-offset = <0x00000234>;
+ image-1 {
+ load = <0x00000001>;
+ size = <0x00000002>;
+ offset = <0x00000003>;
+ description = "U-Boot";
+ };
+ image-2 {
+ load = <0x00000004>;
+ size = <0x00000005>;
+ offset = <0x00000006>;
+ description = "ATF";
+ };
+ };
+ };
+ memory at 0x10 {
+ reg = <0x00000010 0x00000020 0x00000030 0x00000040 0x00000050 0x00000060>;
+ };
+ memory at 0x70 {
+ reg = <0x00000070 0x00000080>;
+ hotpluggable;
+ };
+ memory-map {
+ acpi at 0x11 {
+ reg = <0x00000011 0x00000012 0x00000013 0x00000014 0x00000015 0x00000016 0x00000017 0x00000018 0x00000019 0x0000001a>;
+ usage = "acpi-reclaim";
+ };
+ u-boot at 0x21 {
+ reg = <0x00000021 0x00000022>;
+ usage = "boot-data";
+ };
+ efi at 0x23 {
+ reg = <0x00000023 0x00000024>;
+ usage = "runtime-code";
+ };
+ empty at 0x25 {
+ reg = <0x00000025 0x00000026 0x00000027 0x00000028>;
+ };
+ acpi-things at 0x2a {
+ reg = <0x0000002a 0x00000000>;
+ usage = "acpi-nvs", "runtime-code";
+ };
+ };
+ reserved-memory {
+ mmio at 0x2b {
+ reg = <0x0000002b 0x0000002c>;
+ };
+ memory at 0x2d {
+ reg = <0x0000002d 0x0000002e 0x0000002f 0x00000030>;
+ no-map;
+ };
+ };
+ serial at 0xf1de0000 {
+ compatible = "ns16550a";
+ clock-frequency = <0x001c2000>;
+ current-speed = <0x0001c200>;
+ reg = <0xf1de0000 0x00000100>;
+ reg-io-shift = <0x00000002>;
+ reg-offset = <0x00000040>;
+ virtual-reg = <0x20000000>;
+ access-type = "mmio";
+ };
+ framebuffer at 0xd0000000 {
+ compatible = "simple-framebuffer";
+ reg = <0xd0000000 0x10000000>;
+ width = <0x00000500>;
+ height = <0x00000500>;
+ stride = <0x00001400>;
+ format = "a8r8g8b8";
+ };
+ };
+ =>
+
+This showing reading the handoff into internal state::
+
+ => upl read bc8a5e0
+ Reading UPL at bc8a5e0
+ =>
+
+This shows getting basic information about UPL:
+
+ => upl info -v
+ UPL state: active
+ fit 1264000
+ conf_offset 2a4
+ image 0: load 200000 size 105f5c8 offset a4: U-Boot 2024.07-00770-g739ee12e8358 for sandbox board
diff --git a/doc/usage/index.rst b/doc/usage/index.rst
index 1f6518b77c4..4246c06d97d 100644
--- a/doc/usage/index.rst
+++ b/doc/usage/index.rst
@@ -114,6 +114,7 @@ Shell commands
cmd/tftpput
cmd/trace
cmd/true
+ cmd/upl
cmd/ums
cmd/unbind
cmd/ut
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
index 27aa75e7036..94d054ee54e 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -30,6 +30,7 @@
struct acpi_ctx;
struct driver_rt;
+struct upl;
typedef struct global_data gd_t;
@@ -491,6 +492,12 @@ struct global_data {
* @dmtag_list: List of DM tags
*/
struct list_head dmtag_list;
+#if CONFIG_IS_ENABLED(UPL)
+ /**
+ * @upl: Universal Payload-handoff information
+ */
+ struct upl *upl;
+#endif
};
#ifndef DO_DEPS_ONLY
static_assert(sizeof(struct global_data) == GD_SIZE);
@@ -590,6 +597,14 @@ static_assert(sizeof(struct global_data) == GD_SIZE);
#define gd_malloc_ptr() 0L
#endif
+#if CONFIG_IS_ENABLED(UPL)
+#define gd_upl() gd->upl
+#define gd_set_upl(_val) gd->upl = (_val)
+#else
+#define gd_upl() NULL
+#define gd_set_upl(val)
+#endif
+
/**
* enum gd_flags - global data flags
*
diff --git a/test/boot/upl.c b/test/boot/upl.c
index aa3fddcbb75..056ae54831b 100644
--- a/test/boot/upl.c
+++ b/test/boot/upl.c
@@ -358,6 +358,46 @@ static int upl_test_base(struct unit_test_state *uts)
}
UPL_TEST(upl_test_base, 0);
+/* Test 'upl info' command */
+static int upl_test_info(struct unit_test_state *uts)
+{
+ gd_set_upl(NULL);
+ ut_assertok(run_command("upl info", 0));
+ ut_assert_nextline("UPL state: inactive");
+ ut_assert_console_end();
+
+ gd_set_upl((struct upl *)uts); /* set it to any non-zero value */
+ ut_assertok(run_command("upl info", 0));
+ ut_assert_nextline("UPL state: active");
+ ut_assert_console_end();
+ gd_set_upl(NULL);
+
+ return 0;
+}
+UPL_TEST(upl_test_info, UT_TESTF_CONSOLE_REC);
+
+/* Test 'upl read' and 'upl_write' commands */
+static int upl_test_read_write(struct unit_test_state *uts)
+{
+ ulong addr;
+
+ if (!CONFIG_IS_ENABLED(OFNODE_MULTI_TREE))
+ return -EAGAIN; /* skip test */
+ ut_assertok(run_command("upl write", 0));
+
+ addr = env_get_hex("upladdr", 0);
+ ut_assert_nextline("UPL handoff written to %lx size %lx", addr,
+ env_get_hex("uplsize", 0));
+ ut_assert_console_end();
+
+ ut_assertok(run_command("upl read ${upladdr}", 0));
+ ut_assert_nextline("Reading UPL at %lx", addr);
+ ut_assert_console_end();
+
+ return 0;
+}
+UPL_TEST(upl_test_read_write, UT_TESTF_CONSOLE_REC);
+
int do_ut_upl(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
struct unit_test *tests = UNIT_TEST_SUITE_START(upl_test);
--
2.34.1
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