--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * UPL handoff testing
+ *
+ * Copyright 2024 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <abuf.h>
+#include <mapmem.h>
+#include <upl.h>
+#include <dm/ofnode.h>
+#include <test/suites.h>
+#include <test/test.h>
+#include <test/ut.h>
+#include "bootstd_common.h"
+
+/* Declare a new upl test */
+#define UPL_TEST(_name, _flags) UNIT_TEST(_name, _flags, upl_test)
+
+static int add_region(struct unit_test_state *uts, struct alist *lst,
+ ulong base, ulong size)
+{
+ struct memregion region;
+
+ region.base = base;
+ region.size = size;
+ ut_assertnonnull(alist_add(lst, region));
+
+ return 0;
+}
+
+int upl_get_test_data(struct unit_test_state *uts, struct upl *upl)
+{
+ struct upl_memmap memmap;
+ struct upl_memres memres;
+ struct upl_image img;
+ struct upl_mem mem;
+
+ upl_init(upl);
+
+ upl->addr_cells = 1;
+ upl->size_cells = 1;
+ upl->smbios = 0x123;
+ upl->acpi = 0x456;
+ upl->bootmode = BIT(UPLBM_DEFAULT) | BIT(UPLBM_S3);
+ upl->fit = 0x789;
+ upl->conf_offset = 0x234;
+ upl->addr_width = 46;
+ upl->acpi_nvs_size = 0x100;
+
+ /* image[0] */
+ img.load = 0x1;
+ img.size = 0x2;
+ img.offset = 0x3;
+ img.description = "U-Boot";
+ ut_assertnonnull(alist_add(&upl->image, img));
+
+ /* image[1] */
+ img.load = 0x4;
+ img.size = 0x5;
+ img.offset = 0x6;
+ img.description = "ATF";
+ ut_assertnonnull(alist_add(&upl->image, img));
+
+ /* mem[0] : 3 regions */
+ memset(&mem, '\0', sizeof(mem));
+ alist_init_struct(&mem.region, struct memregion);
+ ut_assertok(add_region(uts, &mem.region, 0x10, 0x20));
+ ut_assertok(add_region(uts, &mem.region, 0x30, 0x40));
+ ut_assertok(add_region(uts, &mem.region, 0x40, 0x50));
+ ut_assertnonnull(alist_add(&upl->mem, mem));
+
+ /* mem[0] : 1 region */
+ alist_init_struct(&mem.region, struct memregion);
+ ut_assertok(add_region(uts, &mem.region, 0x70, 0x80));
+ mem.hotpluggable = true;
+ ut_assertnonnull(alist_add(&upl->mem, mem));
+ mem.hotpluggable = false;
+
+ /* memmap[0] : 5 regions */
+ alist_init_struct(&memmap.region, struct memregion);
+ memmap.name = "acpi";
+ memmap.usage = BIT(UPLUS_ACPI_RECLAIM);
+ ut_assertok(add_region(uts, &memmap.region, 0x11, 0x12));
+ ut_assertok(add_region(uts, &memmap.region, 0x13, 0x14));
+ ut_assertok(add_region(uts, &memmap.region, 0x15, 0x16));
+ ut_assertok(add_region(uts, &memmap.region, 0x17, 0x18));
+ ut_assertok(add_region(uts, &memmap.region, 0x19, 0x1a));
+ ut_assertnonnull(alist_add(&upl->memmap, memmap));
+
+ /* memmap[1] : 1 region */
+ memmap.name = "u-boot";
+ memmap.usage = BIT(UPLUS_BOOT_DATA);
+ alist_init_struct(&memmap.region, struct memregion);
+ ut_assertok(add_region(uts, &memmap.region, 0x21, 0x22));
+ ut_assertnonnull(alist_add(&upl->memmap, memmap));
+
+ /* memmap[2] : 1 region */
+ alist_init_struct(&memmap.region, struct memregion);
+ memmap.name = "efi";
+ memmap.usage = BIT(UPLUS_RUNTIME_CODE);
+ ut_assertok(add_region(uts, &memmap.region, 0x23, 0x24));
+ ut_assertnonnull(alist_add(&upl->memmap, memmap));
+
+ /* memmap[3]: 2 regions */
+ alist_init_struct(&memmap.region, struct memregion);
+ memmap.name = "empty";
+ memmap.usage = 0;
+ ut_assertok(add_region(uts, &memmap.region, 0x25, 0x26));
+ ut_assertok(add_region(uts, &memmap.region, 0x27, 0x28));
+ ut_assertnonnull(alist_add(&upl->memmap, memmap));
+
+ /* memmap[4]: 1 region */
+ alist_init_struct(&memmap.region, struct memregion);
+ memmap.name = "acpi-things";
+ memmap.usage = BIT(UPLUS_RUNTIME_CODE) | BIT(UPLUS_ACPI_NVS);
+ ut_assertok(add_region(uts, &memmap.region, 0x29, 0x2a));
+ ut_assertnonnull(alist_add(&upl->memmap, memmap));
+
+ /* memres[0]: 1 region */
+ alist_init_struct(&memres.region, struct memregion);
+ memset(&memres, '\0', sizeof(memres));
+ memres.name = "mmio";
+ ut_assertok(add_region(uts, &memres.region, 0x2b, 0x2c));
+ ut_assertnonnull(alist_add(&upl->memres, memres));
+
+ /* memres[1]: 2 regions */
+ alist_init_struct(&memres.region, struct memregion);
+ memres.name = "memory";
+ ut_assertok(add_region(uts, &memres.region, 0x2d, 0x2e));
+ ut_assertok(add_region(uts, &memres.region, 0x2f, 0x30));
+ memres.no_map = true;
+ ut_assertnonnull(alist_add(&upl->memres, memres));
+
+ upl->serial.compatible = "ns16550a";
+ upl->serial.clock_frequency = 1843200;
+ upl->serial.current_speed = 115200;
+ alist_init_struct(&upl->serial.reg, struct memregion);
+ ut_assertok(add_region(uts, &upl->serial.reg, 0xf1de0000, 0x100));
+ upl->serial.reg_io_shift = 2;
+ upl->serial.reg_offset = 0x40;
+ upl->serial.reg_io_width = 1;
+ upl->serial.virtual_reg = 0x20000000;
+ upl->serial.access_type = UPLSAT_MMIO;
+
+ alist_init_struct(&upl->graphics.reg, struct memregion);
+ ut_assertok(add_region(uts, &upl->graphics.reg, 0xd0000000, 0x10000000));
+ upl->graphics.width = 1280;
+ upl->graphics.height = 1280;
+ upl->graphics.stride = upl->graphics.width * 4;
+ upl->graphics.format = UPLGF_ARGB32;
+
+ return 0;
+}
+
+static int compare_upl_image(struct unit_test_state *uts,
+ const struct upl_image *base,
+ const struct upl_image *cmp)
+{
+ ut_asserteq(base->load, cmp->load);
+ ut_asserteq(base->size, cmp->size);
+ ut_asserteq(base->offset, cmp->offset);
+ ut_asserteq_str(base->description, cmp->description);
+
+ return 0;
+}
+
+static int compare_upl_memregion(struct unit_test_state *uts,
+ const struct memregion *base,
+ const struct memregion *cmp)
+{
+ ut_asserteq(base->base, cmp->base);
+ ut_asserteq(base->size, cmp->size);
+
+ return 0;
+}
+
+static int compare_upl_mem(struct unit_test_state *uts,
+ const struct upl_mem *base,
+ const struct upl_mem *cmp)
+{
+ int i;
+
+ ut_asserteq(base->region.count, cmp->region.count);
+ ut_asserteq(base->hotpluggable, cmp->hotpluggable);
+ for (i = 0; i < base->region.count; i++) {
+ ut_assertok(compare_upl_memregion(uts,
+ alist_get(&base->region, i, struct memregion),
+ alist_get(&cmp->region, i, struct memregion)));
+ }
+
+ return 0;
+}
+
+static int check_device_name(struct unit_test_state *uts, const char *base,
+ const char *cmp)
+{
+ const char *p;
+
+ p = strchr(cmp, '@');
+ if (p) {
+ ut_assertnonnull(p);
+ ut_asserteq_strn(base, cmp);
+ ut_asserteq(p - cmp, strlen(base));
+ } else {
+ ut_asserteq_str(base, cmp);
+ }
+
+ return 0;
+}
+
+static int compare_upl_memmap(struct unit_test_state *uts,
+ const struct upl_memmap *base,
+ const struct upl_memmap *cmp)
+{
+ int i;
+
+ ut_assertok(check_device_name(uts, base->name, cmp->name));
+ ut_asserteq(base->region.count, cmp->region.count);
+ ut_asserteq(base->usage, cmp->usage);
+ for (i = 0; i < base->region.count; i++)
+ ut_assertok(compare_upl_memregion(uts,
+ alist_get(&base->region, i, struct memregion),
+ alist_get(&cmp->region, i, struct memregion)));
+
+ return 0;
+}
+
+static int compare_upl_memres(struct unit_test_state *uts,
+ const struct upl_memres *base,
+ const struct upl_memres *cmp)
+{
+ int i;
+
+ ut_assertok(check_device_name(uts, base->name, cmp->name));
+ ut_asserteq(base->region.count, cmp->region.count);
+ ut_asserteq(base->no_map, cmp->no_map);
+ for (i = 0; i < base->region.count; i++)
+ ut_assertok(compare_upl_memregion(uts,
+ alist_get(&base->region, i, struct memregion),
+ alist_get(&cmp->region, i, struct memregion)));
+
+ return 0;
+}
+
+static int compare_upl_serial(struct unit_test_state *uts,
+ struct upl_serial *base, struct upl_serial *cmp)
+{
+ int i;
+
+ ut_asserteq_str(base->compatible, cmp->compatible);
+ ut_asserteq(base->clock_frequency, cmp->clock_frequency);
+ ut_asserteq(base->current_speed, cmp->current_speed);
+ for (i = 0; i < base->reg.count; i++)
+ ut_assertok(compare_upl_memregion(uts,
+ alist_get(&base->reg, i, struct memregion),
+ alist_get(&cmp->reg, i, struct memregion)));
+ ut_asserteq(base->reg_io_shift, cmp->reg_io_shift);
+ ut_asserteq(base->reg_offset, cmp->reg_offset);
+ ut_asserteq(base->reg_io_width, cmp->reg_io_width);
+ ut_asserteq(base->virtual_reg, cmp->virtual_reg);
+ ut_asserteq(base->access_type, cmp->access_type);
+
+ return 0;
+}
+
+static int compare_upl_graphics(struct unit_test_state *uts,
+ struct upl_graphics *base,
+ struct upl_graphics *cmp)
+{
+ int i;
+
+ for (i = 0; i < base->reg.count; i++)
+ ut_assertok(compare_upl_memregion(uts,
+ alist_get(&base->reg, i, struct memregion),
+ alist_get(&cmp->reg, i, struct memregion)));
+ ut_asserteq(base->width, cmp->width);
+ ut_asserteq(base->height, cmp->height);
+ ut_asserteq(base->stride, cmp->stride);
+ ut_asserteq(base->format, cmp->format);
+
+ return 0;
+}
+
+static int compare_upl(struct unit_test_state *uts, struct upl *base,
+ struct upl *cmp)
+{
+ int i;
+
+ ut_asserteq(base->addr_cells, cmp->addr_cells);
+ ut_asserteq(base->size_cells, cmp->size_cells);
+
+ ut_asserteq(base->smbios, cmp->smbios);
+ ut_asserteq(base->acpi, cmp->acpi);
+ ut_asserteq(base->bootmode, cmp->bootmode);
+ ut_asserteq(base->fit, cmp->fit);
+ ut_asserteq(base->conf_offset, cmp->conf_offset);
+ ut_asserteq(base->addr_width, cmp->addr_width);
+ ut_asserteq(base->acpi_nvs_size, cmp->acpi_nvs_size);
+
+ ut_asserteq(base->image.count, cmp->image.count);
+ for (i = 0; i < base->image.count; i++)
+ ut_assertok(compare_upl_image(uts,
+ alist_get(&base->image, i, struct upl_image),
+ alist_get(&cmp->image, i, struct upl_image)));
+
+ ut_asserteq(base->mem.count, cmp->mem.count);
+ for (i = 0; i < base->mem.count; i++)
+ ut_assertok(compare_upl_mem(uts,
+ alist_get(&base->mem, i, struct upl_mem),
+ alist_get(&cmp->mem, i, struct upl_mem)));
+
+ ut_asserteq(base->memmap.count, cmp->memmap.count);
+ for (i = 0; i < base->memmap.count; i++)
+ ut_assertok(compare_upl_memmap(uts,
+ alist_get(&base->memmap, i, struct upl_memmap),
+ alist_get(&cmp->memmap, i, struct upl_memmap)));
+
+ ut_asserteq(base->memres.count, cmp->memres.count);
+ for (i = 0; i < base->memres.count; i++)
+ ut_assertok(compare_upl_memres(uts,
+ alist_get(&base->memres, i, struct upl_memres),
+ alist_get(&cmp->memres, i, struct upl_memres)));
+
+ ut_assertok(compare_upl_serial(uts, &base->serial, &cmp->serial));
+ ut_assertok(compare_upl_graphics(uts, &base->graphics, &cmp->graphics));
+
+ return 0;
+}
+
+/* Basic test of writing and reading UPL handoff */
+static int upl_test_base(struct unit_test_state *uts)
+{
+ oftree tree, check_tree;
+ struct upl upl, check;
+ struct abuf buf;
+
+ if (!CONFIG_IS_ENABLED(OFNODE_MULTI_TREE))
+ return -EAGAIN; /* skip test */
+ ut_assertok(upl_get_test_data(uts, &upl));
+
+ ut_assertok(upl_create_handoff_tree(&upl, &tree));
+ ut_assertok(oftree_to_fdt(tree, &buf));
+
+ /*
+ * strings in check_tree and therefore check are only valid so long as
+ * buf stays around. As soon as we call abuf_uninit they go away
+ */
+ check_tree = oftree_from_fdt(abuf_data(&buf));
+ ut_assert(ofnode_valid(oftree_path(check_tree, "/")));
+
+ ut_assertok(upl_read_handoff(&check, check_tree));
+ ut_assertok(compare_upl(uts, &upl, &check));
+ abuf_uninit(&buf);
+
+ return 0;
+}
+UPL_TEST(upl_test_base, 0);
+
+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);
+ const int n_ents = UNIT_TEST_SUITE_COUNT(upl_test);
+
+ return cmd_ut_category("cmd_upl", "cmd_upl_", tests, n_ents, argc,
+ argv);
+}
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