mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
00606d7e39
Driver model currently only operates after relocation is complete. In this state U-Boot typically has a small amount of memory available. In adding support for driver model prior to relocation we must try to use as little memory as possible. In addition, on some machines the memory has not be inited and/or the CPU is not running at full speed or the data cache is off. These can reduce execution performance, so the less initialisation that is done before relocation the better. An immediately-obvious improvement is to only initialise drivers which are actually going to be used before relocation. On many boards the only such driver is a serial UART, so this provides a very large potential benefit. Allow drivers to mark themselves as 'pre-reloc' which means that they will be initialised prior to relocation. This can be done either with a driver flag or with a 'dm,pre-reloc' device tree property. To support this, the various dm scanning function now take a 'pre_reloc_only' parameter which indicates that only drivers marked pre-reloc should be bound. Signed-off-by: Simon Glass <sjg@chromium.org>
107 lines
2.3 KiB
C
107 lines
2.3 KiB
C
/*
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* Copyright (c) 2013 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <dm/test.h>
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#include <dm/root.h>
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#include <dm/uclass-internal.h>
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#include <dm/ut.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct dm_test_state global_test_state;
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/* Get ready for testing */
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static int dm_test_init(struct dm_test_state *dms)
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{
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memset(dms, '\0', sizeof(*dms));
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gd->dm_root = NULL;
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memset(dm_testdrv_op_count, '\0', sizeof(dm_testdrv_op_count));
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ut_assertok(dm_init());
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dms->root = dm_root();
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return 0;
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}
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/* Ensure all the test devices are probed */
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static int do_autoprobe(struct dm_test_state *dms)
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{
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struct udevice *dev;
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int ret;
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/* Scanning the uclass is enough to probe all the devices */
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for (ret = uclass_first_device(UCLASS_TEST, &dev);
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dev;
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ret = uclass_next_device(&dev))
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;
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return ret;
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}
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static int dm_test_destroy(struct dm_test_state *dms)
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{
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int id;
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for (id = 0; id < UCLASS_COUNT; id++) {
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struct uclass *uc;
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/*
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* If the uclass doesn't exist we don't want to create it. So
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* check that here before we call uclass_find_device()/
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*/
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uc = uclass_find(id);
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if (!uc)
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continue;
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ut_assertok(uclass_destroy(uc));
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}
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return 0;
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}
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int dm_test_main(void)
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{
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struct dm_test *tests = ll_entry_start(struct dm_test, dm_test);
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const int n_ents = ll_entry_count(struct dm_test, dm_test);
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struct dm_test_state *dms = &global_test_state;
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struct dm_test *test;
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/*
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* If we have no device tree, or it only has a root node, then these
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* tests clearly aren't going to work...
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*/
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if (!gd->fdt_blob || fdt_next_node(gd->fdt_blob, 0, NULL) < 0) {
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puts("Please run with test device tree:\n"
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" dtc -I dts -O dtb test/dm/test.dts -o test/dm/test.dtb\n"
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" ./u-boot -d test/dm/test.dtb\n");
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ut_assert(gd->fdt_blob);
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}
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printf("Running %d driver model tests\n", n_ents);
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for (test = tests; test < tests + n_ents; test++) {
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printf("Test: %s\n", test->name);
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ut_assertok(dm_test_init(dms));
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if (test->flags & DM_TESTF_SCAN_PDATA)
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ut_assertok(dm_scan_platdata(false));
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if (test->flags & DM_TESTF_PROBE_TEST)
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ut_assertok(do_autoprobe(dms));
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if (test->flags & DM_TESTF_SCAN_FDT)
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ut_assertok(dm_scan_fdt(gd->fdt_blob, false));
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if (test->func(dms))
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break;
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ut_assertok(dm_test_destroy(dms));
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}
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printf("Failures: %d\n", dms->fail_count);
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return 0;
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}
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