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authorSuriyan Ramasami <suriyan.r@gmail.com>2014-11-27 13:24:16 -0800
committerTom Rini <trini@ti.com>2014-12-08 09:35:47 -0500
commit48aead71c1ad2c93fffa182e798f1bcbb5f6dd9d (patch)
tree865d2bf68980ec0c42d39d41133edb9f9566bb6c
parent8b923a56dc0eb9f1ce9d616ae93bd0f63857f315 (diff)
fdt: Allow non-FDT kernels to boot when CONFIG_OF_LIBFDT is defined
The boot commands - bootz/bootm mandate a third argument which is the address to the FDT blob. In cases where this argument is not specified, boot fails with a message indicating a missing FDT. This causes non-FDT kernels to fail to boot. This patch allows both FDT and non-FDT kernels to boot by making the third parameter to the bootm/bootz optional. Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com> Acked-by: Simon Glass <sjg@chromium.org> [trini: Update again for covering appended DTB case after last revert in this area] Signed-off-by: Tom Rini <trini@ti.com>
-rw-r--r--common/image-fdt.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/common/image-fdt.c b/common/image-fdt.c
index 8db3ccb4e7..e3f06cdd1a 100644
--- a/common/image-fdt.c
+++ b/common/image-fdt.c
@@ -237,6 +237,7 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
int fdt_noffset;
#endif
const char *select = NULL;
+ int ok_no_fdt = 0;
*of_flat_tree = NULL;
*of_size = 0;
@@ -309,7 +310,7 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
fdt_addr);
fdt_hdr = image_get_fdt(fdt_addr);
if (!fdt_hdr)
- goto error;
+ goto no_fdt;
/*
* move image data to the load address,
@@ -379,7 +380,7 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
break;
default:
puts("ERROR: Did not find a cmdline Flattened Device Tree\n");
- goto error;
+ goto no_fdt;
}
printf(" Booting using the fdt blob at %#08lx\n", fdt_addr);
@@ -413,11 +414,11 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
}
} else {
debug("## No Flattened Device Tree\n");
- return 0;
+ goto no_fdt;
}
} else {
debug("## No Flattened Device Tree\n");
- return 0;
+ goto no_fdt;
}
*of_flat_tree = fdt_blob;
@@ -427,9 +428,15 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
return 0;
+no_fdt:
+ ok_no_fdt = 1;
error:
*of_flat_tree = NULL;
*of_size = 0;
+ if (!select && ok_no_fdt) {
+ debug("Continuing to boot without FDT\n");
+ return 0;
+ }
return 1;
}