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remoteproc: Add function rproc_get_boot_addr 

Prepare for introduction of custom firmware loaders by
moving the function operating on ELF data-structures into
separate functions. Move lookup of the boot_addr in the
ELF binary to the function rproc_get_boot_addr().

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
[rproc_get_boot_addr's kerneldoc: add missing @rproc line]
[rproc_get_boot_addr's kerneldoc: minor style changes]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
This commit is contained in:
Sjur Brændeland 2012-06-19 09:56:44 +03:00 committed by Ohad Ben-Cohen
parent bd48498487
commit 3e5f9eb5d9
1 changed files with 19 additions and 9 deletions
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28
drivers/remoteproc/remoteproc_core.c
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@ -998,6 +998,24 @@ static int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw)
return 0;
}
/**
* rproc_get_boot_addr() - Get rproc's boot address.
* @rproc: the remote processor handle
* @fw: the ELF firmware image
*
* This function returns the entry point address of the ELF
* image.
*
* Note that the boot address is not a configurable property of all remote
* processors. Some will always boot at a specific hard-coded address.
*/
u32 rproc_get_boot_addr(struct rproc *rproc, const struct firmware *fw)
{
struct elf32_hdr *ehdr = (struct elf32_hdr *)fw->data;
return ehdr->e_entry;
}
/*
* take a firmware and boot a remote processor with it.
*/
@ -1005,7 +1023,6 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
{
struct device *dev = &rproc->dev;
const char *name = rproc->firmware;
struct elf32_hdr *ehdr;
struct resource_table *table;
int ret, tablesz;
@ -1013,8 +1030,6 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
if (ret)
return ret;
ehdr = (struct elf32_hdr *)fw->data;
dev_info(dev, "Booting fw image %s, size %d\n", name, fw->size);
/*
@ -1027,12 +1042,7 @@ static int rproc_fw_boot(struct rproc *rproc, const struct firmware *fw)
return ret;
}
/*
* The ELF entry point is the rproc's boot addr (though this is not
* a configurable property of all remote processors: some will always
* boot at a specific hardcoded address).
*/
rproc->bootaddr = ehdr->e_entry;
rproc->bootaddr = rproc_get_boot_addr(rproc, fw);
/* look for the resource table */
table = rproc_find_rsc_table(rproc, fw, &tablesz);