From cf59d3e9a715fd2b6ff96e4a3a130fceded09a64 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Tue, 31 Jan 2012 15:23:41 +0200 Subject: remoteproc: bail out if firmware has different endianess At this point we don't support remote processors that have a different endianess than the host. Look out for these unsupported scenarios, and bail out if encountered. Reported-by: Grant Likely Signed-off-by: Ohad Ben-Cohen Cc: Mark Grosen Acked-by: Grant Likely --- drivers/remoteproc/remoteproc_core.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers') diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 6212b82885d0..567a3c59b4af 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -39,6 +39,7 @@ #include #include #include +#include #include "remoteproc_internal.h" @@ -851,6 +852,16 @@ static int rproc_fw_sanity_check(struct rproc *rproc, const struct firmware *fw) ehdr = (struct elf32_hdr *)fw->data; + /* We assume the firmware has the same endianess as the host */ +# ifdef __LITTLE_ENDIAN + if (ehdr->e_ident[EI_DATA] != ELFDATA2LSB) { +# else /* BIG ENDIAN */ + if (ehdr->e_ident[EI_DATA] != ELFDATA2MSB) { +# endif + dev_err(dev, "Unsupported firmware endianess\n"); + return -EINVAL; + } + if (fw->size < ehdr->e_shoff + sizeof(struct elf32_shdr)) { dev_err(dev, "Image is too small\n"); return -EINVAL; -- cgit v1.2.3