cmd: load: add load command for memory mapped

cp.b is used a lot as a way to load binaries to memory and execute
them, however we may need to integrate this with the efi subsystem to
set it up as a bootdev.

So, introduce a loadm command that will be consistent with the other
loadX commands and will call the efi API's.

ex: loadm $kernel_addr $kernel_addr_r $kernel_size

with this a kernel with CONFIG_EFI_STUB enabled will be loaded and
then subsequently booted with bootefi command.

Signed-off-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

test/cmd/loadm.c

@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Test for loadm command
+ *
+ * Copyright 2022 ARM Limited
+ * Copyright 2022 Linaro
+ *
+ * Authors:
+ *   Rui Miguel Silva <rui.silva@linaro.org>
+ */
+
+#include <common.h>
+#include <console.h>
+#include <mapmem.h>
+#include <asm/global_data.h>
+#include <dm/test.h>
+#include <test/suites.h>
+#include <test/test.h>
+#include <test/ut.h>
+
+#define BUF_SIZE 0x100
+
+#define LOADM_TEST(_name, _flags)	UNIT_TEST(_name, _flags, loadm_test)
+
+static int loadm_test_params(struct unit_test_state *uts)
+{
+	ut_assertok(console_record_reset_enable());
+	run_command("loadm", 0);
+	ut_assert_nextline("loadm - load binary blob from source address to destination address");
+
+	ut_assertok(console_record_reset_enable());
+	run_command("loadm 0x12345678", 0);
+	ut_assert_nextline("loadm - load binary blob from source address to destination address");
+
+	ut_assertok(console_record_reset_enable());
+	run_command("loadm 0x12345678 0x12345678", 0);
+	ut_assert_nextline("loadm - load binary blob from source address to destination address");
+
+	ut_assertok(console_record_reset_enable());
+	run_command("loadm 0x12345678 0x12345678 0", 0);
+	ut_assert_nextline("loadm: can not load zero bytes");
+
+	return 0;
+}
+LOADM_TEST(loadm_test_params, UT_TESTF_CONSOLE_REC);
+
+static int loadm_test_load (struct unit_test_state *uts)
+{
+	char *buf;
+
+	buf = map_sysmem(0, BUF_SIZE);
+	memset(buf, '\0', BUF_SIZE);
+	memset(buf, 0xaa, BUF_SIZE / 2);
+
+	ut_assertok(console_record_reset_enable());
+	run_command("loadm 0x0 0x80 0x80", 0);
+	ut_assert_nextline("loaded bin to memory: size: 128");
+
+	unmap_sysmem(buf);
+
+	return 0;
+}
+LOADM_TEST(loadm_test_load, UT_TESTF_CONSOLE_REC);
+
+int do_ut_loadm(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+	struct unit_test *tests = UNIT_TEST_SUITE_START(loadm_test);
+	const int n_ents = UNIT_TEST_SUITE_COUNT(loadm_test);
+
+	return cmd_ut_category("loadm", "loadm_test_", tests, n_ents, argc,
+			       argv);
+}