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u-boot/test/dm/remoteproc.c
Fabien Dessenne ffcb880de8 remoteproc: elf_loader: Add elf resource table load support 
Add rproc_elf_load_rsc_table(), which searches for a resource table in
an elf64/elf32 image, and if found, copies it to device memory.
Add also the elf32 and elf64 variants of this API.
Add a test for this.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2020-01-07 11:13:25 -05:00

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7.6 KiB
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015
* Texas Instruments Incorporated - http://www.ti.com/
*/
#include <common.h>
#include <dm.h>
#include <elf.h>
#include <errno.h>
#include <remoteproc.h>
#include <asm/io.h>
#include <dm/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, DM_TESTF_SCAN_PDATA | DM_TESTF_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 exectuable */
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 = CONFIG_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_assertok(memcmp(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 = CONFIG_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, CONFIG_SYS_SDRAM_BASE);
ut_asserteq(rsc_size, rsc_table_size);
ut_assertok(memcmp(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, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
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