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qemu / ipxe / refs/heads/master / . / src / tests / fdt_test.c
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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, 0xf3,
0x00, 0x00, 0x04, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x1b,
0x73, 0x69, 0x66, 0x69, 0x76, 0x65, 0x2c, 0x68, 0x69, 0x66, 0x69, 0x76,
0x65, 0x2d, 0x75, 0x6e, 0x6c, 0x65, 0x61, 0x73, 0x68, 0x65, 0x64, 0x2d,
0x61, 0x30, 0x30, 0x00, 0x73, 0x69, 0x66, 0x69, 0x76, 0x65, 0x2c, 0x68,
0x69, 0x66, 0x69, 0x76, 0x65, 0x2d, 0x75, 0x6e, 0x6c, 0x65, 0x61, 0x73,
0x68, 0x65, 0x64, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x1c,
0x00, 0x00, 0x00, 0x26, 0x53, 0x69, 0x46, 0x69, 0x76, 0x65, 0x20, 0x48,
0x69, 0x46, 0x69, 0x76, 0x65, 0x20, 0x55, 0x6e, 0x6c, 0x65, 0x61, 0x73,
0x68, 0x65, 0x64, 0x20, 0x41, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x01,
0x63, 0x68, 0x6f, 0x73, 0x65, 0x6e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x2c, 0x2f, 0x73, 0x6f, 0x63,
0x2f, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x40, 0x31, 0x30, 0x30, 0x31,
0x30, 0x30, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x01, 0x61, 0x6c, 0x69, 0x61, 0x73, 0x65, 0x73, 0x00,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x15, 0x00, 0x00, 0x00, 0x38,
0x2f, 0x73, 0x6f, 0x63, 0x2f, 0x73, 0x65, 0x72, 0x69, 0x61, 0x6c, 0x40,
0x31, 0x30, 0x30, 0x31, 0x30, 0x30, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x17, 0x00, 0x00, 0x00, 0x40,
0x2f, 0x73, 0x6f, 0x63, 0x2f, 0x65, 0x74, 0x68, 0x65, 0x72, 0x6e, 0x65,
0x74, 0x40, 0x31, 0x30, 0x30, 0x39, 0x30, 0x30, 0x30, 0x30, 0x00, 0x00,
0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x01, 0x63, 0x70, 0x75, 0x73,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x4a,
0x00, 0x0f, 0x42, 0x40, 0x00, 0x00, 0x00, 0x01, 0x63, 0x70, 0x75, 0x40,
0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0x5d, 0x63, 0x70, 0x75, 0x00, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x69, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x6d,
0x6f, 0x6b, 0x61, 0x79, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1b, 0x72, 0x69, 0x73, 0x63,
0x76, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x25,
0x00, 0x00, 0x00, 0x74, 0x72, 0x76, 0x36, 0x34, 0x69, 0x6d, 0x61, 0x63,
0x5f, 0x7a, 0x69, 0x63, 0x6e, 0x74, 0x72, 0x5f, 0x7a, 0x69, 0x63, 0x73,
0x72, 0x5f, 0x7a, 0x69, 0x66, 0x65, 0x6e, 0x63, 0x65, 0x69, 0x5f, 0x7a,
0x69, 0x68, 0x70, 0x6d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x69, 0x6e, 0x74, 0x65, 0x72, 0x72, 0x75, 0x70, 0x74, 0x2d, 0x63, 0x6f,
0x6e, 0x74, 0x72, 0x6f, 0x6c, 0x6c, 0x65, 0x72, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x7e,
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x8f, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0f,
0x00, 0x00, 0x00, 0x1b, 0x72, 0x69, 0x73, 0x63, 0x76, 0x2c, 0x63, 0x70,
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0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x01, 0x6d, 0x65, 0x6d, 0x6f, 0x72, 0x79, 0x40, 0x38,
0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x00, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x5d, 0x6d, 0x65, 0x6d, 0x6f,
0x72, 0x79, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x10,
0x00, 0x00, 0x00, 0x69, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x01, 0x73, 0x6f, 0x63, 0x00, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x0f,
0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0b,
0x00, 0x00, 0x00, 0x1b, 0x73, 0x69, 0x6d, 0x70, 0x6c, 0x65, 0x2d, 0x62,
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0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x0f,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0xb9, 0x52, 0x54, 0x00, 0x12,
0x34, 0x56, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x04,
0x00, 0x00, 0x00, 0xcb, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0xd6, 0x67, 0x6d, 0x69, 0x69,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x08,
0x00, 0x00, 0x00, 0xdf, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x6f, 0x6c, 0x00,
0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x69,
0x00, 0x00, 0x00, 0x00, 0x10, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0a, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x16, 0x00, 0x00, 0x00, 0x1b, 0x73, 0x69, 0x66, 0x69,
0x76, 0x65, 0x2c, 0x66, 0x75, 0x35, 0x34, 0x30, 0x2d, 0x63, 0x30, 0x30,
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0x65, 0x00, 0x70, 0x68, 0x79, 0x2d, 0x6d, 0x6f, 0x64, 0x65, 0x00, 0x72,
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};
/**
* 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,
};