From 48aead71c1ad2c93fffa182e798f1bcbb5f6dd9d Mon Sep 17 00:00:00 2001 From: Suriyan Ramasami Date: Thu, 27 Nov 2014 13:24:16 -0800 Subject: [PATCH] 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 Acked-by: Simon Glass [trini: Update again for covering appended DTB case after last revert in this area] Signed-off-by: Tom Rini --- common/image-fdt.c | 15 +++++++++++---- 1 file 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; } -- 2.39.5