// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2015
 * Texas Instruments Incorporated - https://www.ti.com/
 */

#include <config.h>
#include <dm.h>
#include <elf.h>
#include <errno.h>
#include <remoteproc.h>
#include <asm/io.h>
#include <dm/test.h>
#include <test/test.h>
#include <test/ut.h>

/**
 * dm_test_remoteproc_base() - test the operations after initializations
 * @uts:	unit test state
 *
 * Return:	0 if test passed, else error
 */
static int dm_test_remoteproc_base(struct unit_test_state *uts)
{
	if (!rproc_is_initialized())
		ut_assertok(rproc_init());

	/* Ensure we are initialized */
	ut_asserteq(true, rproc_is_initialized());

	/* platform data device 1 */
	ut_assertok(rproc_stop(0));
	ut_assertok(rproc_reset(0));
	/* -> invalid attempt tests */
	ut_asserteq(-EINVAL, rproc_start(0));
	ut_asserteq(-EINVAL, rproc_ping(0));
	/* Valid tests */
	ut_assertok(rproc_load(0, 1, 0));
	ut_assertok(rproc_start(0));
	ut_assertok(rproc_is_running(0));
	ut_assertok(rproc_ping(0));
	ut_assertok(rproc_reset(0));
	ut_assertok(rproc_stop(0));

	/* dt device device 1 */
	ut_assertok(rproc_stop(1));
	ut_assertok(rproc_reset(1));
	ut_assertok(rproc_load(1, 1, 0));
	ut_assertok(rproc_start(1));
	ut_assertok(rproc_is_running(1));
	ut_assertok(rproc_ping(1));
	ut_assertok(rproc_reset(1));
	ut_assertok(rproc_stop(1));

	/* dt device device 2 */
	ut_assertok(rproc_stop(0));
	ut_assertok(rproc_reset(0));
	/* -> invalid attempt tests */
	ut_asserteq(-EINVAL, rproc_start(0));
	ut_asserteq(-EINVAL, rproc_ping(0));
	/* Valid tests */
	ut_assertok(rproc_load(2, 1, 0));
	ut_assertok(rproc_start(2));
	ut_assertok(rproc_is_running(2));
	ut_assertok(rproc_ping(2));
	ut_assertok(rproc_reset(2));
	ut_assertok(rproc_stop(2));

	return 0;
}
DM_TEST(dm_test_remoteproc_base, UTF_SCAN_PDATA | UTF_SCAN_FDT);

#define DEVICE_TO_PHYSICAL_OFFSET	0x1000
/**
 * dm_test_remoteproc_elf() - test the ELF operations
 * @uts:	unit test state
 *
 * Return:	0 if test passed, else error
 */
static int dm_test_remoteproc_elf(struct unit_test_state *uts)
{
	u8 valid_elf32[] = {
		/* @0x00 - ELF HEADER - */
		/* ELF magic */
		0x7f, 0x45, 0x4c, 0x46,
		/* 32 Bits */
		0x01,
		/* Endianness */
#ifdef __LITTLE_ENDIAN
		0x01,
#else
		0x02,
#endif
		/* Version */
		0x01,
		/* Padding */
		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		/* Type : executable */
		0x02, 0x00,
		/* Machine: ARM */
		0x28, 0x00,
		/* Version */
		0x01, 0x00, 0x00, 0x00,
		/* Entry */
		0x00, 0x00, 0x00, 0x08,
		/* phoff (program header offset @ 0x40)*/
		0x40, 0x00, 0x00, 0x00,
		/* shoff (section header offset @ 0x90) */
		0x90, 0x00, 0x00, 0x00,
		/* flags */
		0x00, 0x00, 0x00, 0x00,
		/* ehsize (elf header size = 0x34) */
		0x34, 0x00,
		/* phentsize (program header size = 0x20) */
		0x20, 0x00,
		/* phnum (program header number : 1) */
		0x01, 0x00,
		/* shentsize (section header size : 40 bytes) */
		0x28, 0x00,
		/* shnum (section header number: 3) */
		0x02, 0x00,
		/* shstrndx (section header name section index: 1) */
		0x01, 0x00,
		/* padding */
		0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x00,

		/* @0x40 - PROGRAM HEADER TABLE - */
		/* type : PT_LOAD */
		0x01, 0x00, 0x00, 0x00,
		/* offset */
		0x00, 0x00, 0x00, 0x00,
		/* vaddr */
		0x00, 0x00, 0x00, 0x00,
		/* paddr : physical address */
		0x00, 0x00, 0x00, 0x00,
		/* filesz : 0x20 bytes (program header size) */
		0x20, 0x00, 0x00, 0x00,
		/* memsz = filesz */
		0x20, 0x00, 0x00, 0x00,
		/* flags : readable and executable */
		0x05, 0x00, 0x00, 0x00,
		/* padding */
		0x00, 0x00, 0x00, 0x00,

		/* @0x60 - RESOURCE TABLE SECTION - */
		/* version */
		0x01, 0x00, 0x00, 0x00,
		/* num (0, no entries) */
		0x00, 0x00, 0x00, 0x00,
		/* Reserved */
		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

		/* @0x70 - SECTION'S NAMES SECTION - */
		/* section 0 name (".shrtrtab") */
		0x2e, 0x73, 0x68, 0x73, 0x74, 0x72, 0x74, 0x61, 0x62, 0x00,
		/* section 1 name (".resource_table") */
		0x2e, 0x72, 0x65, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x5f,
		0x74, 0x61, 0x62, 0x6c, 0x65, 0x00,
		/* padding */
		0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

		/* @0x90 - SECTION HEADER TABLE - */
		/* Section 0 : resource table header */
		/* sh_name - index into section header string table section */
		0x0a, 0x00, 0x00, 0x00,
		/* sh_type and sh_flags */
		0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
		/* sh_addr = where the resource table has to be copied to */
		0x00, 0x00, 0x00, 0x00,
		/* sh_offset = 0x60 */
		0x60, 0x00, 0x00, 0x00,
		/* sh_size = 16 bytes */
		0x10, 0x00, 0x00, 0x00,
		/* sh_link, sh_info, sh_addralign, sh_entsize */
		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		/* Section 1 : section's names section header */
		/* sh_name - index into section header string table section */
		0x00, 0x00, 0x00, 0x00,
		/* sh_type and sh_flags */
		0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		/* sh_addr  */
		0x00, 0x00, 0x00, 0x00,
		/* sh_offset = 0x70 */
		0x70, 0x00, 0x00, 0x00,
		/* sh_size = 27 bytes */
		0x1b, 0x00, 0x00, 0x00,
		/* sh_link, sh_info, sh_addralign, sh_entsize */
		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
	};
	unsigned int size = ARRAY_SIZE(valid_elf32);
	struct udevice *dev;
	phys_addr_t loaded_firmware_paddr, loaded_rsc_table_paddr;
	void *loaded_firmware, *loaded_rsc_table;
	u32 loaded_firmware_size, rsc_table_size;
	ulong rsc_addr, rsc_size;
	Elf32_Ehdr *ehdr = (Elf32_Ehdr *)valid_elf32;
	Elf32_Phdr *phdr = (Elf32_Phdr *)(valid_elf32 + ehdr->e_phoff);
	Elf32_Shdr *shdr = (Elf32_Shdr *)(valid_elf32 + ehdr->e_shoff);

	ut_assertok(uclass_get_device(UCLASS_REMOTEPROC, 0, &dev));

	/*
	 * In its Program Header Table, let the firmware specifies to be loaded
	 * at SDRAM_BASE *device* address (p_paddr field).
	 * Its size is defined by the p_filesz field.
	 */
	phdr->p_paddr = CFG_SYS_SDRAM_BASE;
	loaded_firmware_size = phdr->p_filesz;

	/*
	 * This *device* address is converted to a *physical* address by the
	 * device_to_virt() operation of sandbox_test_rproc which returns
	 * DeviceAddress + DEVICE_TO_PHYSICAL_OFFSET.
	 * This is where we expect to get the firmware loaded.
	 */
	loaded_firmware_paddr = phdr->p_paddr + DEVICE_TO_PHYSICAL_OFFSET;
	loaded_firmware = map_physmem(loaded_firmware_paddr,
				      loaded_firmware_size, MAP_NOCACHE);
	ut_assertnonnull(loaded_firmware);
	memset(loaded_firmware, 0, loaded_firmware_size);

	/* Load firmware in loaded_firmware, and verify it */
	ut_assertok(rproc_elf32_load_image(dev, (ulong)valid_elf32, size));
	ut_asserteq_mem(loaded_firmware, valid_elf32, loaded_firmware_size);
	ut_asserteq(rproc_elf_get_boot_addr(dev, (unsigned long)valid_elf32),
		    0x08000000);
	unmap_physmem(loaded_firmware, MAP_NOCACHE);

	/* Resource table */
	shdr->sh_addr = CFG_SYS_SDRAM_BASE;
	rsc_table_size = shdr->sh_size;

	loaded_rsc_table_paddr = shdr->sh_addr + DEVICE_TO_PHYSICAL_OFFSET;
	loaded_rsc_table = map_physmem(loaded_rsc_table_paddr,
				       rsc_table_size, MAP_NOCACHE);
	ut_assertnonnull(loaded_rsc_table);
	memset(loaded_rsc_table, 0, rsc_table_size);

	/* Load and verify */
	ut_assertok(rproc_elf32_load_rsc_table(dev, (ulong)valid_elf32, size,
					       &rsc_addr, &rsc_size));
	ut_asserteq(rsc_addr, CFG_SYS_SDRAM_BASE);
	ut_asserteq(rsc_size, rsc_table_size);
	ut_asserteq_mem(loaded_firmware, valid_elf32 + shdr->sh_offset,
			shdr->sh_size);
	unmap_physmem(loaded_firmware, MAP_NOCACHE);

	/* Invalid ELF Magic */
	valid_elf32[0] = 0;
	ut_asserteq(-EPROTONOSUPPORT,
		    rproc_elf32_sanity_check((ulong)valid_elf32, size));

	return 0;
}
DM_TEST(dm_test_remoteproc_elf, UTF_SCAN_PDATA | UTF_SCAN_FDT);