upl: Add a command
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@chromium.org>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 978f44e..8af136d 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -388,6 +388,13 @@
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 87133cc..91227f1 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -189,6 +189,7 @@
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 0000000..c974588
--- /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@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));