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remoteproc: elf_loader: Introduce rproc_elf_get_boot_addr() api 

Introduce rproc_elf_get_boot_addr() that returns the entry point of
the elf file. This api auto detects the 64/32 bit elf file and returns
the boot addr accordingly.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
This commit is contained in:
Lokesh Vutla 2019-09-04 16:01:31 +05:30 committed by Tom Rini
parent 856c0ad413
commit 81e39fbd92
3 changed files with 38 additions and 0 deletions
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24
drivers/remoteproc/rproc-elf-loader.c
View File

@ -251,3 +251,27 @@ int rproc_elf_load_image(struct udevice *dev, ulong addr, ulong size)
else
return rproc_elf32_load_image(dev, addr, size);
}
static ulong rproc_elf32_get_boot_addr(ulong addr)
{
Elf32_Ehdr *ehdr = (Elf32_Ehdr *)addr;
return ehdr->e_entry;
}
static ulong rproc_elf64_get_boot_addr(ulong addr)
{
Elf64_Ehdr *ehdr = (Elf64_Ehdr *)addr;
return ehdr->e_entry;
}
ulong rproc_elf_get_boot_addr(struct udevice *dev, ulong addr)
{
Elf32_Ehdr *ehdr = (Elf32_Ehdr *)addr;
if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
return rproc_elf64_get_boot_addr(addr);
else
return rproc_elf32_get_boot_addr(addr);
}

12
include/remoteproc.h
View File

@ -267,6 +267,16 @@ int rproc_elf64_load_image(struct udevice *dev, ulong addr, ulong size);
* @return 0 if the image is successfully loaded, else appropriate error value.
*/
int rproc_elf_load_image(struct udevice *dev, unsigned long addr, ulong size);
/**
* rproc_elf_get_boot_addr() - Get rproc's boot address.
* @dev: device loading the ELF image
* @addr: valid ELF image address
*
* This function returns the entry point address of the ELF
* image.
*/
ulong rproc_elf_get_boot_addr(struct udevice *dev, ulong addr);
#else
static inline int rproc_init(void) { return -ENOSYS; }
static inline int rproc_dev_init(int id) { return -ENOSYS; }
@ -292,6 +302,8 @@ static inline int rproc_elf64_load_image(struct udevice *dev, ulong addr,
static inline int rproc_elf_load_image(struct udevice *dev, ulong addr,
ulong size)
{ return -ENOSYS; }
static inline ulong rproc_elf_get_boot_addr(struct udevice *dev, ulong addr)
{ return 0; }
#endif
#endif /* _RPROC_H_ */

2
test/dm/remoteproc.c
View File

@ -174,6 +174,8 @@ static int dm_test_remoteproc_elf(struct unit_test_state *uts)
/* 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);
/* Invalid ELF Magic */