[U-Boot] [PATCH v1 0/2] android: colibri_imx7: reserve DDR memory for Cortex-M4

[U-Boot] [PATCH v1 0/2] android: colibri_imx7: reserve DDR memory for Cortex-M4

[Igor Opaniuk]

i.MX 7's Cortex-M4 core can run from DDR and uses DDR memory for
the rpmsg communication. Both use cases need a fixed location of
memory reserved. For the rpmsg use case the reserved area needs
to be in sync with the kernel's hardcoded vring descriptor location.

Introduce support for adding linux,usable-memory property to carve
out 1MB of memory in case the M4 core is running. Also make sure
that the i.MX 7 specific rpmsg driver does not get loaded in case
we do not carve out memory.

Igor Opaniuk (2):
  common: fdt_support: add support for setting usable memory
  board: colibri_imx7: reserve DDR memory for Cortex-M4

 arch/arm/include/asm/mach-imx/sys_proto.h |  2 ++
 board/toradex/colibri_imx7/colibri_imx7.c | 37 +++++++++++++++++++++++
 common/fdt_support.c                      | 35 +++++++++++++++++++++
 include/fdt_support.h                     |  2 ++
 4 files changed, 76 insertions(+)

-- 
2.17.1

[U-Boot] [PATCH v1 1/2] common: fdt_support: add support for setting usable memory

[Igor Opaniuk]

From: Igor Opaniuk <igor.opaniuk@toradex.com>

Add support for setting linux,usable-memory property in the memory
node of device tree for the kernel [1].

This property holds a base address and size, describing a
limited region in which memory may be considered available for use by
the kernel. Memory outside of this range is not available for use.

[1] https://www.kernel.org/doc/Documentation/devicetree/bindings/chosen.txt

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
---

 common/fdt_support.c  | 35 +++++++++++++++++++++++++++++++++++
 include/fdt_support.h |  2 ++
 2 files changed, 37 insertions(+)

diff --git a/common/fdt_support.c b/common/fdt_support.c
index f31e9b0cc5..57413c7a4d 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -473,6 +473,41 @@ int fdt_fixup_memory(void *blob, u64 start, u64 size)
 	return fdt_fixup_memory_banks(blob, &start, &size, 1);
 }
 
+int fdt_set_usable_memory(void *blob, u64 start[], u64 size[], int areas)
+{
+	int err, nodeoffset;
+	int len;
+	u8 tmp[8 * 16]; /* Up to 64-bit address + 64-bit size */
+
+	if (areas > 8) {
+		printf("%s: num areas %d exceeds hardcoded limit %d\n",
+		       __func__, areas, 8);
+		return -1;
+	}
+
+	err = fdt_check_header(blob);
+	if (err < 0) {
+		printf("%s: %s\n", __func__, fdt_strerror(err));
+		return err;
+	}
+
+	/* find or create "/memory" node. */
+	nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory");
+	if (nodeoffset < 0)
+		return nodeoffset;
+
+	len = fdt_pack_reg(blob, tmp, start, size, areas);
+
+	err = fdt_setprop(blob, nodeoffset, "linux,usable-memory", tmp, len);
+	if (err < 0) {
+		printf("WARNING: could not set %s %s.\n",
+		       "reg", fdt_strerror(err));
+		return err;
+	}
+
+	return 0;
+}
+
 void fdt_fixup_ethernet(void *fdt)
 {
 	int i = 0, j, prop;
diff --git a/include/fdt_support.h b/include/fdt_support.h
index 27fe564f0b..a868b6710e 100644
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -102,6 +102,8 @@ static inline int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[],
 }
 #endif
 
+int fdt_set_usable_memory(void *blob, u64 start[], u64 size[], int banks);
+
 void fdt_fixup_ethernet(void *fdt);
 int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
 			 const void *val, int len, int create);
-- 
2.17.1

[U-Boot] [PATCH v1 1/2] common: fdt_support: add support for setting usable memory

[Oleksandr Suvorov]

On Fri, 12 Jul 2019 at 13:51, Igor Opaniuk <igor.opaniuk@gmail.com> wrote:
>
> From: Igor Opaniuk <igor.opaniuk@toradex.com>
>
> Add support for setting linux,usable-memory property in the memory
> node of device tree for the kernel [1].
>
> This property holds a base address and size, describing a
> limited region in which memory may be considered available for use by
> the kernel. Memory outside of this range is not available for use.
>
> [1] https://www.kernel.org/doc/Documentation/devicetree/bindings/chosen.txt
>
> Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
> Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
> Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>

Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
> ---
>
>  common/fdt_support.c  | 35 +++++++++++++++++++++++++++++++++++
>  include/fdt_support.h |  2 ++
>  2 files changed, 37 insertions(+)
>
> diff --git a/common/fdt_support.c b/common/fdt_support.c
> index f31e9b0cc5..57413c7a4d 100644
> --- a/common/fdt_support.c
> +++ b/common/fdt_support.c
> @@ -473,6 +473,41 @@ int fdt_fixup_memory(void *blob, u64 start, u64 size)
>         return fdt_fixup_memory_banks(blob, &start, &size, 1);
>  }
>
> +int fdt_set_usable_memory(void *blob, u64 start[], u64 size[], int areas)
> +{
> +       int err, nodeoffset;
> +       int len;
> +       u8 tmp[8 * 16]; /* Up to 64-bit address + 64-bit size */
> +
> +       if (areas > 8) {
> +               printf("%s: num areas %d exceeds hardcoded limit %d\n",
> +                      __func__, areas, 8);
> +               return -1;
> +       }
> +
> +       err = fdt_check_header(blob);
> +       if (err < 0) {
> +               printf("%s: %s\n", __func__, fdt_strerror(err));
> +               return err;
> +       }
> +
> +       /* find or create "/memory" node. */
> +       nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory");
> +       if (nodeoffset < 0)
> +               return nodeoffset;
> +
> +       len = fdt_pack_reg(blob, tmp, start, size, areas);
> +
> +       err = fdt_setprop(blob, nodeoffset, "linux,usable-memory", tmp, len);
> +       if (err < 0) {
> +               printf("WARNING: could not set %s %s.\n",
> +                      "reg", fdt_strerror(err));
> +               return err;
> +       }
> +
> +       return 0;
> +}
> +
>  void fdt_fixup_ethernet(void *fdt)
>  {
>         int i = 0, j, prop;
> diff --git a/include/fdt_support.h b/include/fdt_support.h
> index 27fe564f0b..a868b6710e 100644
> --- a/include/fdt_support.h
> +++ b/include/fdt_support.h
> @@ -102,6 +102,8 @@ static inline int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[],
>  }
>  #endif
>
> +int fdt_set_usable_memory(void *blob, u64 start[], u64 size[], int banks);
> +
>  void fdt_fixup_ethernet(void *fdt);
>  int fdt_find_and_setprop(void *fdt, const char *node, const char *prop,
>                          const void *val, int len, int create);
> --
> 2.17.1
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> https://lists.denx.de/listinfo/u-boot



-- 
Best regards

Oleksandr Suvorov
cryosay at gmail.com

[U-Boot] [PATCH v1 1/2] common: fdt_support: add support for setting usable memory

[sbabic at denx.de]

> From: Igor Opaniuk <igor.opaniuk@toradex.com>
> Add support for setting linux,usable-memory property in the memory
> node of device tree for the kernel [1].
> This property holds a base address and size, describing a
> limited region in which memory may be considered available for use by
> the kernel. Memory outside of this range is not available for use.
> [1] https://www.kernel.org/doc/Documentation/devicetree/bindings/chosen.txt
> Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
> Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
> Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
> Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH v1 1/2] common: fdt_support: add support for setting usable memory

[Igor Opaniuk]

Hi Stefano,

On Mon, Oct 14, 2019 at 3:40 PM <sbabic@denx.de> wrote:
>
> > From: Igor Opaniuk <igor.opaniuk@toradex.com>
> > Add support for setting linux,usable-memory property in the memory
> > node of device tree for the kernel [1].
> > This property holds a base address and size, describing a
> > limited region in which memory may be considered available for use by
> > the kernel. Memory outside of this range is not available for use.
> > [1] https://www.kernel.org/doc/Documentation/devicetree/bindings/chosen.txt
> > Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
> > Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
> > Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
> > Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
> > Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
>
> Applied to u-boot-imx, master, thanks !

Unfortunately I can't find this commit neither in u-boot-imx/next
neither in u-boot-imx/master.

>
> Best regards,
> Stefano Babic
>
> --
> =====================================================================
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
> =====================================================================
>


-- 
Best regards - Freundliche Grüsse - Meilleures salutations

Igor Opaniuk

mailto: igor.opaniuk at gmail.com
skype: igor.opanyuk
+380 (93) 836 40 67
http://ua.linkedin.com/in/iopaniuk

[U-Boot] [PATCH v1 1/2] common: fdt_support: add support for setting usable memory

[Stefano Babic]

Hi Igor,

On 28/11/19 16:23, Igor Opaniuk wrote:
> Hi Stefano,
> 
> On Mon, Oct 14, 2019 at 3:40 PM <sbabic@denx.de> wrote:
>>
>>> From: Igor Opaniuk <igor.opaniuk@toradex.com>
>>> Add support for setting linux,usable-memory property in the memory
>>> node of device tree for the kernel [1].
>>> This property holds a base address and size, describing a
>>> limited region in which memory may be considered available for use by
>>> the kernel. Memory outside of this range is not available for use.
>>> [1] https://www.kernel.org/doc/Documentation/devicetree/bindings/chosen.txt
>>> Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
>>> Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
>>> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
>>> Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
>>> Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
>>
>> Applied to u-boot-imx, master, thanks !
> 
> Unfortunately I can't find this commit neither in u-boot-imx/next
> neither in u-boot-imx/master.
> 

Added again, and I have found that this breaks all boards where
CONFIG_ARCH_FIXUP_FDT_MEMORY is not set.

In fact, your new function calls fdt_pack_reg and this is not compiled
if the define above is not set. Just ask if it does not make sense to
let fdt_pack_reg() be always compiled...

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH v1 1/2] common: fdt_support: add support for setting usable memory

[Igor Opaniuk]

Hi Stefano,

On Tue, Dec 3, 2019 at 11:28 AM Stefano Babic <sbabic@denx.de> wrote:
>
> Hi Igor,
>
> On 28/11/19 16:23, Igor Opaniuk wrote:
> > Hi Stefano,
> >
> > On Mon, Oct 14, 2019 at 3:40 PM <sbabic@denx.de> wrote:
> >>
> >>> From: Igor Opaniuk <igor.opaniuk@toradex.com>
> >>> Add support for setting linux,usable-memory property in the memory
> >>> node of device tree for the kernel [1].
> >>> This property holds a base address and size, describing a
> >>> limited region in which memory may be considered available for use by
> >>> the kernel. Memory outside of this range is not available for use.
> >>> [1] https://www.kernel.org/doc/Documentation/devicetree/bindings/chosen.txt
> >>> Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
> >>> Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
> >>> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
> >>> Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
> >>> Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
> >>
> >> Applied to u-boot-imx, master, thanks !
> >
> > Unfortunately I can't find this commit neither in u-boot-imx/next
> > neither in u-boot-imx/master.
> >
>
> Added again, and I have found that this breaks all boards where
> CONFIG_ARCH_FIXUP_FDT_MEMORY is not set.
>
> In fact, your new function calls fdt_pack_reg and this is not compiled
> if the define above is not set. Just ask if it does not make sense to
> let fdt_pack_reg() be always compiled...
Thanks for reporting, the fix is here [1]

[1] https://patchwork.ozlabs.org/project/uboot/list/?series=146241

>
> Best regards,
> Stefano Babic
>
> --
> =====================================================================
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
> =====================================================================



-- 
Best regards - Freundliche Grüsse - Meilleures salutations

Igor Opaniuk

mailto: igor.opaniuk at gmail.com
skype: igor.opanyuk
+380 (93) 836 40 67
http://ua.linkedin.com/in/iopaniuk

[U-Boot] [PATCH v1 2/2] board: colibri_imx7: reserve DDR memory for Cortex-M4

[Igor Opaniuk]

From: Igor Opaniuk <igor.opaniuk@toradex.com>

i.MX 7's Cortex-M4 core can run from DDR and uses DDR memory for
the rpmsg communication. Both use cases need a fixed location of
memory reserved. For the rpmsg use case the reserved area needs
to be in sync with the kernel's hardcoded vring descriptor location.

Use the linux,usable-memory property to carve out 1MB of memory
in case the M4 core is running. Also make sure that the i.MX 7
specific rpmsg driver does not get loaded in case we do not carve
out memory.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>

Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
---

 arch/arm/include/asm/mach-imx/sys_proto.h |  2 ++
 board/toradex/colibri_imx7/colibri_imx7.c | 37 +++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
index 4925dd7894..775cd3df40 100644
--- a/arch/arm/include/asm/mach-imx/sys_proto.h
+++ b/arch/arm/include/asm/mach-imx/sys_proto.h
@@ -113,6 +113,8 @@ void init_src(void);
 void init_snvs(void);
 void imx_wdog_disable_powerdown(void);
 
+int arch_auxiliary_core_check_up(u32 core_id);
+
 int board_mmc_get_env_dev(int devno);
 
 int nxp_board_rev(void);
diff --git a/board/toradex/colibri_imx7/colibri_imx7.c b/board/toradex/colibri_imx7/colibri_imx7.c
index 0eb83474c4..6059088bda 100644
--- a/board/toradex/colibri_imx7/colibri_imx7.c
+++ b/board/toradex/colibri_imx7/colibri_imx7.c
@@ -333,6 +333,43 @@ int checkboard(void)
 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 int ft_board_setup(void *blob, bd_t *bd)
 {
+#if defined(CONFIG_IMX_BOOTAUX)
+	int up;
+
+	up = arch_auxiliary_core_check_up(0);
+	if (up) {
+		int ret;
+		int areas = 1;
+		u64 start[2], size[2];
+
+		/*
+		 * Reserve 1MB of memory for M4 (1MiB is also the minimum
+		 * alignment for Linux due to MMU section size restrictions).
+		 */
+		start[0] = gd->bd->bi_dram[0].start;
+		size[0] = SZ_256M - SZ_1M;
+
+		/* If needed, create a second entry for memory beyond 256M */
+		if (gd->bd->bi_dram[0].size > SZ_256M) {
+			start[1] = gd->bd->bi_dram[0].start + SZ_256M;
+			size[1] = gd->bd->bi_dram[0].size - SZ_256M;
+			areas = 2;
+		}
+
+		ret = fdt_set_usable_memory(blob, start, size, areas);
+		if (ret) {
+			eprintf("Cannot set usable memory\n");
+			return ret;
+		}
+	} else {
+		int off;
+
+		off = fdt_node_offset_by_compatible(blob, -1,
+						    "fsl,imx7d-rpmsg");
+		if (off > 0)
+			fdt_status_disabled(blob, off);
+	}
+#endif
 #if defined(CONFIG_FDT_FIXUP_PARTITIONS)
 	static const struct node_info nodes[] = {
 		{ "fsl,imx7d-gpmi-nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
-- 
2.17.1

[U-Boot] [PATCH v1 2/2] board: colibri_imx7: reserve DDR memory for Cortex-M4

[Oleksandr Suvorov]

On Fri, 12 Jul 2019 at 13:50, Igor Opaniuk <igor.opaniuk@gmail.com> wrote:
>
> From: Igor Opaniuk <igor.opaniuk@toradex.com>
>
> i.MX 7's Cortex-M4 core can run from DDR and uses DDR memory for
> the rpmsg communication. Both use cases need a fixed location of
> memory reserved. For the rpmsg use case the reserved area needs
> to be in sync with the kernel's hardcoded vring descriptor location.
>
> Use the linux,usable-memory property to carve out 1MB of memory
> in case the M4 core is running. Also make sure that the i.MX 7
> specific rpmsg driver does not get loaded in case we do not carve
> out memory.
>
> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
> Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
>
> Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>

Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

> ---
>
>  arch/arm/include/asm/mach-imx/sys_proto.h |  2 ++
>  board/toradex/colibri_imx7/colibri_imx7.c | 37 +++++++++++++++++++++++
>  2 files changed, 39 insertions(+)
>
> diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
> index 4925dd7894..775cd3df40 100644
> --- a/arch/arm/include/asm/mach-imx/sys_proto.h
> +++ b/arch/arm/include/asm/mach-imx/sys_proto.h
> @@ -113,6 +113,8 @@ void init_src(void);
>  void init_snvs(void);
>  void imx_wdog_disable_powerdown(void);
>
> +int arch_auxiliary_core_check_up(u32 core_id);
> +
>  int board_mmc_get_env_dev(int devno);
>
>  int nxp_board_rev(void);
> diff --git a/board/toradex/colibri_imx7/colibri_imx7.c b/board/toradex/colibri_imx7/colibri_imx7.c
> index 0eb83474c4..6059088bda 100644
> --- a/board/toradex/colibri_imx7/colibri_imx7.c
> +++ b/board/toradex/colibri_imx7/colibri_imx7.c
> @@ -333,6 +333,43 @@ int checkboard(void)
>  #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
>  int ft_board_setup(void *blob, bd_t *bd)
>  {
> +#if defined(CONFIG_IMX_BOOTAUX)
> +       int up;
> +
> +       up = arch_auxiliary_core_check_up(0);
> +       if (up) {
> +               int ret;
> +               int areas = 1;
> +               u64 start[2], size[2];
> +
> +               /*
> +                * Reserve 1MB of memory for M4 (1MiB is also the minimum
> +                * alignment for Linux due to MMU section size restrictions).
> +                */
> +               start[0] = gd->bd->bi_dram[0].start;
> +               size[0] = SZ_256M - SZ_1M;
> +
> +               /* If needed, create a second entry for memory beyond 256M */
> +               if (gd->bd->bi_dram[0].size > SZ_256M) {
> +                       start[1] = gd->bd->bi_dram[0].start + SZ_256M;
> +                       size[1] = gd->bd->bi_dram[0].size - SZ_256M;
> +                       areas = 2;
> +               }
> +
> +               ret = fdt_set_usable_memory(blob, start, size, areas);
> +               if (ret) {
> +                       eprintf("Cannot set usable memory\n");
> +                       return ret;
> +               }
> +       } else {
> +               int off;
> +
> +               off = fdt_node_offset_by_compatible(blob, -1,
> +                                                   "fsl,imx7d-rpmsg");
> +               if (off > 0)
> +                       fdt_status_disabled(blob, off);
> +       }
> +#endif
>  #if defined(CONFIG_FDT_FIXUP_PARTITIONS)
>         static const struct node_info nodes[] = {
>                 { "fsl,imx7d-gpmi-nand", MTD_DEV_TYPE_NAND, }, /* NAND flash */
> --
> 2.17.1
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> https://lists.denx.de/listinfo/u-boot



-- 
Best regards
Oleksandr Suvorov

Toradex AG
Altsagenstrasse 5 | 6048 Horw/Luzern | Switzerland | T: +41 41 500
4800 (main line)

[U-Boot] [PATCH v1 2/2] board: colibri_imx7: reserve DDR memory for Cortex-M4

[sbabic at denx.de]

> From: Igor Opaniuk <igor.opaniuk@toradex.com>
> i.MX 7's Cortex-M4 core can run from DDR and uses DDR memory for
> the rpmsg communication. Both use cases need a fixed location of
> memory reserved. For the rpmsg use case the reserved area needs
> to be in sync with the kernel's hardcoded vring descriptor location.
> Use the linux,usable-memory property to carve out 1MB of memory
> in case the M4 core is running. Also make sure that the i.MX 7
> specific rpmsg driver does not get loaded in case we do not carve
> out memory.
> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
> Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
> Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
> Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================

[U-Boot] [PATCH v1 2/2] board: colibri_imx7: reserve DDR memory for Cortex-M4

[Igor Opaniuk]

Hi Stefano,

On Mon, Oct 14, 2019 at 3:40 PM <sbabic@denx.de> wrote:
>
> > From: Igor Opaniuk <igor.opaniuk@toradex.com>
> > i.MX 7's Cortex-M4 core can run from DDR and uses DDR memory for
> > the rpmsg communication. Both use cases need a fixed location of
> > memory reserved. For the rpmsg use case the reserved area needs
> > to be in sync with the kernel's hardcoded vring descriptor location.
> > Use the linux,usable-memory property to carve out 1MB of memory
> > in case the M4 core is running. Also make sure that the i.MX 7
> > specific rpmsg driver does not get loaded in case we do not carve
> > out memory.
> > Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
> > Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
> > Signed-off-by: Igor Opaniuk <igor.opaniuk@gmail.com>
> > Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
>
> Applied to u-boot-imx, master, thanks !

Unfortunately I can't find this commit neither in u-boot-imx/next
neither in u-boot-imx/master.

>
> Best regards,
> Stefano Babic
>
> --
> =====================================================================
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
> =====================================================================
>


-- 
Best regards - Freundliche Grüsse - Meilleures salutations

Igor Opaniuk

mailto: igor.opaniuk at gmail.com
skype: igor.opanyuk
+380 (93) 836 40 67
http://ua.linkedin.com/in/iopaniuk

[U-Boot] [PATCH v1 0/2] android: colibri_imx7: reserve DDR memory for Cortex-M4

[Igor Opaniuk]

On Fri, Jul 12, 2019 at 1:50 PM Igor Opaniuk <igor.opaniuk@gmail.com> wrote:
>
> i.MX 7's Cortex-M4 core can run from DDR and uses DDR memory for
> the rpmsg communication. Both use cases need a fixed location of
> memory reserved. For the rpmsg use case the reserved area needs
> to be in sync with the kernel's hardcoded vring descriptor location.
>
> Introduce support for adding linux,usable-memory property to carve
> out 1MB of memory in case the M4 core is running. Also make sure
> that the i.MX 7 specific rpmsg driver does not get loaded in case
> we do not carve out memory.
>
> Igor Opaniuk (2):
>   common: fdt_support: add support for setting usable memory
>   board: colibri_imx7: reserve DDR memory for Cortex-M4
>
>  arch/arm/include/asm/mach-imx/sys_proto.h |  2 ++
>  board/toradex/colibri_imx7/colibri_imx7.c | 37 +++++++++++++++++++++++
>  common/fdt_support.c                      | 35 +++++++++++++++++++++
>  include/fdt_support.h                     |  2 ++
>  4 files changed, 76 insertions(+)
>
> --
> 2.17.1
>

Please, don't pay attention to "android" keyword in the title
(actually nothing related to android), it's just a glitch.
--
Best regards - Freundliche Grüsse - Meilleures salutations

Igor Opaniuk

mailto: igor.opaniuk at gmail.com
skype: igor.opanyuk
+380 (93) 836 40 67
http://ua.linkedin.com/in/iopaniuk