287 lines
6.7 KiB
C
287 lines
6.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2016 NextThing Co
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* Copyright (c) 2016 Free Electrons
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*/
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#include <common.h>
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#include <command.h>
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#include <errno.h>
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#include <fdt_support.h>
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#include <image.h>
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#include <log.h>
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#include <malloc.h>
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#include <linux/sizes.h>
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#include <test/ut.h>
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#include <test/overlay.h>
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#include <test/suites.h>
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/* 4k ought to be enough for anybody */
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#define FDT_COPY_SIZE (4 * SZ_1K)
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extern u32 __dtb_test_fdt_base_begin;
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extern u32 __dtb_test_fdt_overlay_begin;
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extern u32 __dtb_test_fdt_overlay_stacked_begin;
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static void *fdt;
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static int ut_fdt_getprop_u32_by_index(void *fdt, const char *path,
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const char *name, int index,
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u32 *out)
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{
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const fdt32_t *val;
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int node_off;
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int len;
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node_off = fdt_path_offset(fdt, path);
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if (node_off < 0)
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return node_off;
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val = fdt_getprop(fdt, node_off, name, &len);
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if (!val || (len < (sizeof(uint32_t) * (index + 1))))
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return -FDT_ERR_NOTFOUND;
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*out = fdt32_to_cpu(*(val + index));
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return 0;
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}
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static int ut_fdt_getprop_u32(void *fdt, const char *path, const char *name,
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u32 *out)
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{
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return ut_fdt_getprop_u32_by_index(fdt, path, name, 0, out);
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}
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static int fdt_getprop_str(void *fdt, const char *path, const char *name,
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const char **out)
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{
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int node_off;
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int len;
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node_off = fdt_path_offset(fdt, path);
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if (node_off < 0)
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return node_off;
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*out = fdt_stringlist_get(fdt, node_off, name, 0, &len);
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return len < 0 ? len : 0;
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}
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static int fdt_overlay_change_int_property(struct unit_test_state *uts)
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{
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u32 val = 0;
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ut_assertok(ut_fdt_getprop_u32(fdt, "/test-node", "test-int-property",
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&val));
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ut_asserteq(43, val);
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_change_int_property, 0);
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static int fdt_overlay_change_str_property(struct unit_test_state *uts)
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{
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const char *val = NULL;
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ut_assertok(fdt_getprop_str(fdt, "/test-node", "test-str-property",
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&val));
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ut_asserteq_str("foobar", val);
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_change_str_property, 0);
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static int fdt_overlay_add_str_property(struct unit_test_state *uts)
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{
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const char *val = NULL;
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ut_assertok(fdt_getprop_str(fdt, "/test-node", "test-str-property-2",
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&val));
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ut_asserteq_str("foobar2", val);
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_add_str_property, 0);
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static int fdt_overlay_add_node_by_phandle(struct unit_test_state *uts)
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{
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int off;
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off = fdt_path_offset(fdt, "/test-node/new-node");
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ut_assert(off >= 0);
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ut_assertnonnull(fdt_getprop(fdt, off, "new-property", NULL));
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_add_node_by_phandle, 0);
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static int fdt_overlay_add_node_by_path(struct unit_test_state *uts)
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{
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int off;
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off = fdt_path_offset(fdt, "/new-node");
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ut_assert(off >= 0);
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ut_assertnonnull(fdt_getprop(fdt, off, "new-property", NULL));
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_add_node_by_path, 0);
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static int fdt_overlay_add_subnode_property(struct unit_test_state *uts)
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{
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int off;
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off = fdt_path_offset(fdt, "/test-node/sub-test-node");
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ut_assert(off >= 0);
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ut_assertnonnull(fdt_getprop(fdt, off, "sub-test-property", NULL));
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ut_assertnonnull(fdt_getprop(fdt, off, "new-sub-test-property", NULL));
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_add_subnode_property, 0);
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static int fdt_overlay_local_phandle(struct unit_test_state *uts)
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{
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uint32_t local_phandle;
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u32 val = 0;
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int off;
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off = fdt_path_offset(fdt, "/new-local-node");
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ut_assert(off >= 0);
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local_phandle = fdt_get_phandle(fdt, off);
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ut_assert(local_phandle);
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ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-several-phandle",
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0, &val));
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ut_asserteq(local_phandle, val);
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ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-several-phandle",
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1, &val));
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ut_asserteq(local_phandle, val);
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_local_phandle, 0);
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static int fdt_overlay_local_phandles(struct unit_test_state *uts)
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{
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uint32_t local_phandle, test_phandle;
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u32 val = 0;
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int off;
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off = fdt_path_offset(fdt, "/new-local-node");
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ut_assert(off >= 0);
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local_phandle = fdt_get_phandle(fdt, off);
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ut_assert(local_phandle);
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off = fdt_path_offset(fdt, "/test-node");
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ut_assert(off >= 0);
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test_phandle = fdt_get_phandle(fdt, off);
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ut_assert(test_phandle);
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ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-phandle", 0,
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&val));
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ut_asserteq(test_phandle, val);
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ut_assertok(ut_fdt_getprop_u32_by_index(fdt, "/", "test-phandle", 1,
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&val));
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ut_asserteq(local_phandle, val);
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_local_phandles, 0);
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static int fdt_overlay_stacked(struct unit_test_state *uts)
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{
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u32 val = 0;
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ut_assertok(ut_fdt_getprop_u32(fdt, "/new-local-node",
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"stacked-test-int-property", &val));
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ut_asserteq(43, val);
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return CMD_RET_SUCCESS;
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}
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OVERLAY_TEST(fdt_overlay_stacked, 0);
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int do_ut_overlay(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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struct unit_test *tests = ll_entry_start(struct unit_test,
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overlay_test);
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const int n_ents = ll_entry_count(struct unit_test, overlay_test);
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struct unit_test_state *uts;
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void *fdt_base = &__dtb_test_fdt_base_begin;
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void *fdt_overlay = &__dtb_test_fdt_overlay_begin;
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void *fdt_overlay_stacked = &__dtb_test_fdt_overlay_stacked_begin;
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void *fdt_overlay_copy, *fdt_overlay_stacked_copy;
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int ret = -ENOMEM;
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uts = calloc(1, sizeof(*uts));
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if (!uts)
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return -ENOMEM;
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ut_assertok(fdt_check_header(fdt_base));
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ut_assertok(fdt_check_header(fdt_overlay));
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fdt = malloc(FDT_COPY_SIZE);
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if (!fdt)
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goto err1;
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fdt_overlay_copy = malloc(FDT_COPY_SIZE);
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if (!fdt_overlay_copy)
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goto err2;
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fdt_overlay_stacked_copy = malloc(FDT_COPY_SIZE);
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if (!fdt_overlay_stacked_copy)
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goto err3;
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/*
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* Resize the FDT to 4k so that we have room to operate on
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*
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* (and relocate it since the memory might be mapped
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* read-only)
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*/
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ut_assertok(fdt_open_into(fdt_base, fdt, FDT_COPY_SIZE));
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/*
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* Resize the overlay to 4k so that we have room to operate on
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*
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* (and relocate it since the memory might be mapped
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* read-only)
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*/
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ut_assertok(fdt_open_into(fdt_overlay, fdt_overlay_copy,
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FDT_COPY_SIZE));
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/*
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* Resize the stacked overlay to 4k so that we have room to operate on
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*
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* (and relocate it since the memory might be mapped
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* read-only)
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*/
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ut_assertok(fdt_open_into(fdt_overlay_stacked, fdt_overlay_stacked_copy,
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FDT_COPY_SIZE));
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/* Apply the overlay */
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ut_assertok(fdt_overlay_apply(fdt, fdt_overlay_copy));
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/* Apply the stacked overlay */
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ut_assertok(fdt_overlay_apply(fdt, fdt_overlay_stacked_copy));
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ret = cmd_ut_category("overlay", "", tests, n_ents, argc, argv);
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free(fdt_overlay_stacked_copy);
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err3:
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free(fdt_overlay_copy);
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err2:
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free(fdt);
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err1:
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return ret;
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}
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