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x86: Support loading kernel setup from a FIT

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Add a new setup@ section to the FIT which can be used to provide a setup
binary for booting Linux on x86. This makes it possible to boot x86 from
a FIT.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2014-10-19 21:11:24 -06:00
parent 381197788d
commit 90268b878b
9 changed files with 399 additions and 2 deletions
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22
common/image-fit.c
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@@ -1497,6 +1497,8 @@ static const char *fit_get_image_type_property(int type)
return FIT_KERNEL_PROP;
case IH_TYPE_RAMDISK:
return FIT_RAMDISK_PROP;
case IH_TYPE_X86_SETUP:
return FIT_SETUP_PROP;
}
return "unknown";
@@ -1693,3 +1695,23 @@ int fit_image_load(bootm_headers_t *images, ulong addr,
return noffset;
}
int boot_get_setup_fit(bootm_headers_t *images, uint8_t arch,
ulong *setup_start, ulong *setup_len)
{
int noffset;
ulong addr;
ulong len;
int ret;
addr = map_to_sysmem(images->fit_hdr_os);
noffset = fit_get_node_from_config(images, FIT_SETUP_PROP, addr);
if (noffset < 0)
return noffset;
ret = fit_image_load(images, addr, NULL, NULL, arch,
IH_TYPE_X86_SETUP, BOOTSTAGE_ID_FIT_SETUP_START,
FIT_LOAD_REQUIRED, setup_start, &len);
return ret;
}