On Fri, Jan 27, 2023 at 11:33 AM Peng Fan (OSS) <peng.fan@xxxxxxxxxxx> wrote: > > From: Peng Fan <peng.fan@xxxxxxx> > > The i.MX8M Cortex-M core not has ROM. It has a requirement is > the stack, pc value should be set in address 0 and 4 from the view of > itself. From Cortex-A core view, the region is at TCML start address. > > The stack and pc value are the first two words stored in section > ".interrupts" of the firmware, and the section is the first section in > the firmware. > > When the firmware is built to run in TCML, there is no issue, because > when copying elf segments, the first two words are copied to TCML also. > > However when the firmware is built ro run in DDR, the first two words > are not copied to TCML start address. > > This patch is to find the ".interrupts" section, read out the first > two words and write to TCML start address at offset 0 and 4. > > Signed-off-by: Peng Fan <peng.fan@xxxxxxx> > --- > drivers/remoteproc/imx_rproc.c | 37 +++++++++++++++++++++++++++++++++- > 1 file changed, 36 insertions(+), 1 deletion(-) > > diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c > index 295e0e0e869a..f5ee0c9bb09d 100644 > --- a/drivers/remoteproc/imx_rproc.c > +++ b/drivers/remoteproc/imx_rproc.c > @@ -7,6 +7,7 @@ > #include <linux/arm-smccc.h> > #include <linux/clk.h> > #include <linux/err.h> > +#include <linux/firmware.h> I wonder why do you need to include this? Nothing in this patch looks like it is using it.
