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master
src/tests/fdt_test.c
320 строк
16 KB
Michael Brown
[fdt] Use phandle as device location
04 авг 2025, 16:52
04 авг 2025, 16:52
5f10b74
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/* * Copyright (C) 2025 Michael Brown <mbrown@fensystems.co.uk>. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. * * You can also choose to distribute this program under the terms of * the Unmodified Binary Distribution Licence (as given in the file * COPYING.UBDL), provided that you have satisfied its requirements. */ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); /** @file * * Flattened device tree self-tests * */ /* Forcibly enable assertions */ #undef NDEBUG #include <string.h> #include <ipxe/fdt.h> #include <ipxe/image.h> #include <ipxe/test.h> /** Simplified QEMU sifive_u device tree blob */ static const uint8_t sifive_u[] = { 0xd0, 0x0d, 0xfe, 0xed, 0x00, 0x00, 0x05, 0x8f, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x04, 0x9c, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x11, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 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0x73, 0x00, 0x6c, 0x6f, 0x63, 0x61, 0x6c, 0x2d, 0x6d, 0x61, 0x63, 0x2d, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x00, 0x70, 0x68, 0x79, 0x2d, 0x68, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x00, 0x70, 0x68, 0x79, 0x2d, 0x6d, 0x6f, 0x64, 0x65, 0x00, 0x72, 0x65, 0x67, 0x2d, 0x6e, 0x61, 0x6d, 0x65, 0x73, 0x00, 0x6d, 0x61, 0x78, 0x2d, 0x73, 0x70, 0x65, 0x65, 0x64, 0x00 }; /** * Perform FDT self-test * */ static void fdt_test_exec ( void ) { struct fdt_descriptor desc; struct fdt_header *hdr; struct fdt fdt; const char *string; struct image *image; uint32_t u32; uint64_t u64; unsigned int count; unsigned int offset; /* Verify parsing */ hdr = ( ( struct fdt_header * ) sifive_u ); ok ( fdt_parse ( &fdt, hdr, 0 ) != 0 ); ok ( fdt_parse ( &fdt, hdr, 1 ) != 0 ); ok ( fdt_parse ( &fdt, hdr, ( sizeof ( sifive_u ) - 1 ) ) != 0 ); ok ( fdt_parse ( &fdt, hdr, -1UL ) == 0 ); ok ( fdt.len == sizeof ( sifive_u ) ); ok ( fdt_parse ( &fdt, hdr, sizeof ( sifive_u ) ) == 0 ); ok ( fdt.len == sizeof ( sifive_u ) ); /* Verify string properties */ ok ( ( string = fdt_string ( &fdt, 0, "model" ) ) != NULL ); ok ( strcmp ( string, "SiFive HiFive Unleashed A00" ) == 0 ); ok ( ( string = fdt_string ( &fdt, 0, "nonexistent" ) ) == NULL ); /* Verify string list properties */ ok ( ( string = fdt_strings ( &fdt, 0, "model", &count ) ) != NULL ); ok ( count == 1 ); ok ( memcmp ( string, "SiFive HiFive Unleashed A00", 28 ) == 0 ); ok ( ( string = fdt_strings ( &fdt, 0, "compatible", &count ) ) != NULL ); ok ( count == 2 ); ok ( memcmp ( string, "sifive,hifive-unleashed-a00\0" "sifive,hifive-unleashed", 52 ) == 0 ); ok ( ( string = fdt_strings ( &fdt, 0, "nonexistent", &count ) ) == NULL ); ok ( count == 0 ); /* Verify path lookup */ ok ( fdt_path ( &fdt, "", &offset ) == 0 ); ok ( offset == 0 ); ok ( fdt_path ( &fdt, "/", &offset ) == 0 ); ok ( offset == 0 ); ok ( fdt_path ( &fdt, "/cpus/cpu@0/interrupt-controller", &offset ) == 0 ); ok ( ( string = fdt_string ( &fdt, offset, "compatible" ) ) != NULL ); ok ( strcmp ( string, "riscv,cpu-intc" ) == 0 ); ok ( fdt_path ( &fdt, "//soc/serial@10010000//", &offset ) == 0 ); ok ( ( string = fdt_string ( &fdt, offset, "compatible" ) ) != NULL ); ok ( strcmp ( string, "sifive,uart0" ) == 0 ); ok ( fdt_path ( &fdt, "/nonexistent", &offset ) != 0 ); ok ( fdt_path ( &fdt, "/cpus/nonexistent", &offset ) != 0 ); ok ( fdt_path ( &fdt, "/soc/serial@10010000:115200n8", &offset ) == 0 ); ok ( ( string = fdt_string ( &fdt, offset, "compatible" ) ) != NULL ); ok ( strcmp ( string, "sifive,uart0" ) == 0 ); /* Verify 64-bit integer properties */ ok ( fdt_u64 ( &fdt, 0, "#address-cells", &u64 ) == 0 ); ok ( u64 == 2 ); ok ( fdt_path ( &fdt, "/soc/ethernet@10090000", &offset ) == 0 ); ok ( fdt_u64 ( &fdt, offset, "max-speed", &u64 ) == 0 ); ok ( u64 == 10000000000ULL ); ok ( fdt_u64 ( &fdt, offset, "#nonexistent", &u64 ) != 0 ); /* Verify 32-bit integer properties */ ok ( fdt_u32 ( &fdt, 0, "#address-cells", &u32 ) == 0 ); ok ( u32 == 2 ); ok ( fdt_u32 ( &fdt, 0, "#nonexistent", &u32 ) != 0 ); ok ( fdt_path ( &fdt, "/soc/ethernet@10090000", &offset ) == 0 ); ok ( fdt_u32 ( &fdt, offset, "max-speed", &u32 ) != 0 ); /* Verify phandle properties */ ok ( fdt_path ( &fdt, "/cpus/cpu@0/interrupt-controller", &offset ) == 0 ); ok ( fdt_phandle ( &fdt, offset ) == 0x03 ); ok ( fdt_path ( &fdt, "/soc/ethernet@10090000/ethernet-phy@0", &offset ) == 0 ); ok ( fdt_phandle ( &fdt, offset ) == 0x08 ); ok ( fdt_path ( &fdt, "/soc/serial@10010000", &offset ) == 0 ); ok ( fdt_phandle ( &fdt, offset ) == 0 ); /* Verify cell properties */ ok ( fdt_path ( &fdt, "/soc/ethernet@10090000", &offset ) == 0 ); ok ( fdt_cells ( &fdt, offset, "reg", 4, 2, &u64 ) == 0 ); ok ( u64 == 0x100a0000 ); ok ( fdt_cells ( &fdt, offset, "reg", 6, 2, &u64 ) == 0 ); ok ( u64 == 0x1000 ); ok ( fdt_cells ( &fdt, offset, "reg", 0, 2, &u64 ) == 0 ); ok ( u64 == 0x10090000 ); ok ( fdt_cells ( &fdt, offset, "reg", 6, 0, &u64 ) == 0 ); ok ( u64 == 0x1000 ); ok ( fdt_cells ( &fdt, offset, "reg", 8, 0, &u64 ) == 0 ); ok ( u64 == 0 ); ok ( fdt_cells ( &fdt, offset, "reg", 7, 2, &u64 ) != 0 ); ok ( fdt_cells ( &fdt, offset, "notareg", 0, 1, &u64 ) != 0 ); /* Verify alias lookup */ ok ( fdt_alias ( &fdt, "serial0", &offset ) == 0 ); ok ( ( string = fdt_string ( &fdt, offset, "compatible" ) ) != NULL ); ok ( strcmp ( string, "sifive,uart0" ) == 0 ); ok ( fdt_alias ( &fdt, "nonexistent0", &offset ) != 0 ); ok ( fdt_alias ( &fdt, "ethernet0:params", &offset ) == 0 ); ok ( ( string = fdt_string ( &fdt, offset, "phy-mode" ) ) != NULL ); ok ( strcmp ( string, "gmii" ) == 0 ); /* Verify node description */ ok ( fdt_path ( &fdt, "/memory@80000000", &offset ) == 0 ); ok ( fdt_describe ( &fdt, offset, &desc ) == 0 ); ok ( desc.offset == offset ); ok ( strcmp ( desc.name, "memory@80000000" ) == 0 ); ok ( desc.data == NULL ); ok ( desc.len == 0 ); ok ( desc.depth == +1 ); ok ( fdt_describe ( &fdt, desc.next, &desc ) == 0 ); ok ( strcmp ( desc.name, "device_type" ) == 0 ); ok ( strcmp ( desc.data, "memory" ) == 0 ); ok ( desc.depth == 0 ); /* Verify parent lookup */ ok ( fdt_path ( &fdt, "/soc/ethernet@10090000/ethernet-phy@0", &offset ) == 0 ); ok ( fdt_parent ( &fdt, offset, &offset ) == 0 ); ok ( fdt_describe ( &fdt, offset, &desc ) == 0 ); ok ( strcmp ( desc.name, "ethernet@10090000" ) == 0 ); ok ( fdt_parent ( &fdt, offset, &offset ) == 0 ); ok ( fdt_describe ( &fdt, offset, &desc ) == 0 ); ok ( strcmp ( desc.name, "soc" ) == 0 ); ok ( fdt_parent ( &fdt, offset, &offset ) == 0 ); ok ( offset == 0 ); /* Verify device tree creation */ image = image_memory ( "test.dtb", sifive_u, sizeof ( sifive_u ) ); ok ( image != NULL ); image_tag ( image, &fdt_image ); ok ( fdt_create ( &hdr, "hello world", 0xabcd0000, 0x00001234 ) == 0 ); ok ( fdt_parse ( &fdt, hdr, -1UL ) == 0 ); ok ( fdt_path ( &fdt, "/chosen", &offset ) == 0 ); ok ( ( string = fdt_string ( &fdt, offset, "bootargs" ) ) != NULL ); ok ( strcmp ( string, "hello world" ) == 0 ); ok ( fdt_u64 ( &fdt, offset, "linux,initrd-start", &u64 ) == 0 ); ok ( u64 == 0xabcd0000 ); ok ( fdt_u64 ( &fdt, offset, "linux,initrd-end", &u64 ) == 0 ); ok ( u64 == 0xabcd1234 ); fdt_remove ( hdr ); unregister_image ( image ); } /** FDT self-test */ struct self_test fdt_test __self_test = { .name = "fdt", .exec = fdt_test_exec, };