| Message ID | 1556078372-26851-6-git-send-email-jun.nie@linaro.org |
|---|---|
| State | Changes Requested |
| Delegated to: | Stefano Babic |
| Headers | show |
| Series | pico-imx7d: Add support for BL33 case | expand |
> Subject: [PATCH v3 5/9] pico-imx7d: Reserve region of memory to OPTEE > > Subtracts CONFIG_OPTEE_TZDRAM_SIZE from the available DRAM size so > that the OPTEE memory is not override during u-boot relocation. > > Note the OPTEE boot process will itself subtract the DRAM region it lives in > from the memory map passed to Linux. > > Signed-off-by: Jun Nie <jun.nie@linaro.org> > --- > board/technexion/pico-imx7d/pico-imx7d.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/board/technexion/pico-imx7d/pico-imx7d.c > b/board/technexion/pico-imx7d/pico-imx7d.c > index 53e1469..7c9e145 100644 > --- a/board/technexion/pico-imx7d/pico-imx7d.c > +++ b/board/technexion/pico-imx7d/pico-imx7d.c > @@ -60,6 +60,11 @@ int dram_init(void) > { > gd->ram_size = imx_ddr_size(); > > + /* Subtract the defined OPTEE runtime firmware length */ #ifdef > +CONFIG_OPTEE_TZDRAM_SIZE > + gd->ram_size -= CONFIG_OPTEE_TZDRAM_SIZE; #endif > + Better describe that OP-TEE runs at the top of DRAM. Actually the best method should be modify dram banks, because OP-TEE not always runs at top DRAM. Since this is pico board specific, so Reviewed-by: Peng Fan <peng.fan@nxp.com> Regards, Peng. > return 0; > } > > -- > 2.7.4
diff --git a/board/technexion/pico-imx7d/pico-imx7d.c b/board/technexion/pico-imx7d/pico-imx7d.c index 53e1469..7c9e145 100644 --- a/board/technexion/pico-imx7d/pico-imx7d.c +++ b/board/technexion/pico-imx7d/pico-imx7d.c @@ -60,6 +60,11 @@ int dram_init(void) { gd->ram_size = imx_ddr_size(); + /* Subtract the defined OPTEE runtime firmware length */ +#ifdef CONFIG_OPTEE_TZDRAM_SIZE + gd->ram_size -= CONFIG_OPTEE_TZDRAM_SIZE; +#endif + return 0; }
Subtracts CONFIG_OPTEE_TZDRAM_SIZE from the available DRAM size so that the OPTEE memory is not override during u-boot relocation. Note the OPTEE boot process will itself subtract the DRAM region it lives in from the memory map passed to Linux. Signed-off-by: Jun Nie <jun.nie@linaro.org> --- board/technexion/pico-imx7d/pico-imx7d.c | 5 +++++ 1 file changed, 5 insertions(+)