From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andre Przywara Date: Wed, 26 Apr 2017 01:32:35 +0100 Subject: [U-Boot] [PATCH v4 03/20] SPL: FIT: improve error handling In-Reply-To: <1493166772-24598-1-git-send-email-andre.przywara@arm.com> References: <1493166772-24598-1-git-send-email-andre.przywara@arm.com> Message-ID: <1493166772-24598-4-git-send-email-andre.przywara@arm.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de At the moment we ignore any errors due to missing FIT properties, instead go ahead and calculate our addresses with the -1 return value. Fix this and bail out if any of the mandatory properties are missing. Signed-off-by: Andre Przywara Reviewed-by: Simon Glass --- common/spl/spl_fit.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c index 85af980..ecd42d8 100644 --- a/common/spl/spl_fit.c +++ b/common/spl/spl_fit.c @@ -11,14 +11,17 @@ #include #include +#define FDT_ERROR ((ulong)(-1)) + static ulong fdt_getprop_u32(const void *fdt, int node, const char *prop) { const u32 *cell; int len; cell = fdt_getprop(fdt, node, prop, &len); - if (len != sizeof(*cell)) - return -1U; + if (!cell || len != sizeof(*cell)) + return FDT_ERROR; + return fdt32_to_cpu(*cell); } @@ -222,7 +225,11 @@ int spl_load_simple_fit(struct spl_image_info *spl_image, /* Get its information and set up the spl_image structure */ data_offset = fdt_getprop_u32(fit, node, "data-offset"); + if (data_offset == FDT_ERROR) + return -ENOENT; data_size = fdt_getprop_u32(fit, node, "data-size"); + if (data_size == FDT_ERROR) + return -ENOENT; load = fdt_getprop_u32(fit, node, "load"); debug("data_offset=%x, data_size=%x\n", data_offset, data_size); spl_image->load_addr = load; @@ -265,6 +272,10 @@ int spl_load_simple_fit(struct spl_image_info *spl_image, } fdt_offset = fdt_getprop_u32(fit, node, "data-offset"); fdt_len = fdt_getprop_u32(fit, node, "data-size"); + if (fdt_offset == FDT_ERROR || fdt_len == FDT_ERROR) { + debug("%s: cannot load FDT data\n" __func__); + return -ENOENT; + } /* * Read the device tree and place it after the image. There may be -- 2.8.2