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remoteproc: elf_loader: Introduce a common elf loader and checker functions

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Introduce a common remoteproc elf loader and checker functions that
automatically detects the 64 bit elf file or 32 bit elf file and
loads/checks the sections accordingly.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com>
This commit is contained in:
Lokesh Vutla 2019-09-04 16:01:30 +05:30 committed by Tom Rini
parent e3c4d6f01f
commit 856c0ad413
2 changed files with 60 additions and 0 deletions
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31
drivers/remoteproc/rproc-elf-loader.c
View file

@ -120,6 +120,22 @@ int rproc_elf64_sanity_check(ulong addr, ulong size)
return 0;
}
/* Basic function to verify ELF image format */
int rproc_elf_sanity_check(ulong addr, ulong size)
{
Elf32_Ehdr *ehdr = (Elf32_Ehdr *)addr;
if (!addr) {
dev_err(dev, "Invalid firmware address\n");
return -EFAULT;
}
if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
return rproc_elf64_sanity_check(addr, size);
else
return rproc_elf32_sanity_check(addr, size);
}
int rproc_elf32_load_image(struct udevice *dev, unsigned long addr, ulong size)
{
Elf32_Ehdr *ehdr; /* Elf header structure pointer */
@ -220,3 +236,18 @@ int rproc_elf64_load_image(struct udevice *dev, ulong addr, ulong size)
return ret;
}
int rproc_elf_load_image(struct udevice *dev, ulong addr, ulong size)
{
Elf32_Ehdr *ehdr = (Elf32_Ehdr *)addr;
if (!addr) {
dev_err(dev, "Invalid firmware address\n");
return -EFAULT;
}
if (ehdr->e_ident[EI_CLASS] == ELFCLASS64)
return rproc_elf64_load_image(dev, addr, size);
else
return rproc_elf32_load_image(dev, addr, size);
}

29
include/remoteproc.h
View file

@ -226,6 +226,19 @@ int rproc_elf32_sanity_check(ulong addr, ulong size);
*/
int rproc_elf64_sanity_check(ulong addr, ulong size);
/**
* rproc_elf_sanity_check() - Verify if an image is a valid ELF one
*
* Check if a valid ELF image exists at the given memory location. Auto
* detects ELF32/ELF64 and verifies basic ELF64/ELF32 format requirements
* like magic number and sections size.
*
* @addr: address of the image to verify
* @size: size of the image
* @return 0 if the image looks good, else appropriate error value.
*/
int rproc_elf_sanity_check(ulong addr, ulong size);
/**
* rproc_elf32_load_image() - load an ELF32 image
* @dev: device loading the ELF32 image
@ -243,6 +256,17 @@ int rproc_elf32_load_image(struct udevice *dev, unsigned long addr, ulong size);
* @return 0 if the image is successfully loaded, else appropriate error value.
*/
int rproc_elf64_load_image(struct udevice *dev, ulong addr, ulong size);
/**
* rproc_elf_load_image() - load an ELF image
* @dev: device loading the ELF image
* @addr: valid ELF image address
* @size: size of the image
*
* Auto detects if the image is ELF32 or ELF64 image and load accordingly.
* @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);
#else
static inline int rproc_init(void) { return -ENOSYS; }
static inline int rproc_dev_init(int id) { return -ENOSYS; }
@ -257,12 +281,17 @@ static inline int rproc_elf32_sanity_check(ulong addr,
ulong size) { return -ENOSYS; }
static inline int rproc_elf64_sanity_check(ulong addr,
ulong size) { return -ENOSYS; }
static inline int rproc_elf_sanity_check(ulong addr,
ulong size) { return -ENOSYS; }
static inline int rproc_elf32_load_image(struct udevice *dev,
unsigned long addr, ulong size)
{ return -ENOSYS; }
static inline int rproc_elf64_load_image(struct udevice *dev, ulong addr,
ulong size)
{ return -ENOSYS; }
static inline int rproc_elf_load_image(struct udevice *dev, ulong addr,
ulong size)
{ return -ENOSYS; }
#endif
#endif /* _RPROC_H_ */