[PATCH v1 0/6] rockchip: kylin: Boot with android boot image

[PATCH v1 0/6] rockchip: kylin: Boot with android boot image

[Jeffy Chen]

We are porting android to kylin board now.
This series could let it boot up with android's boot image.


Jeffy Chen (6):
  common/image-fdt.c: Make boot_get_fdt() perform a check for Android
    images
  ARM: bootm: Try to use relocated ramdisk
  rockchip: rk3036: Bind GPIO banks
  rockchip: kylin: Add default gpt partition table
  rockchip: kylin: Enable boot with android boot image
  rockchip: kylin: Check fastboot request

 arch/arm/lib/bootm.c                      |  5 ++-
 board/kylin/kylin_rk3036/kylin_rk3036.c   | 32 ++++++++++++++++++
 common/image-fdt.c                        |  4 +++
 drivers/pinctrl/rockchip/pinctrl_rk3036.c |  8 +++++
 include/configs/kylin_rk3036.h            | 55 +++++++++++++++++++++++++++++++
 5 files changed, 103 insertions(+), 1 deletion(-)

-- 
2.1.4

[PATCH v1 1/6] common/image-fdt.c: Make boot_get_fdt() perform a check for Android images

[Jeffy Chen]

Android images don't have a fdt.

Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---

 common/image-fdt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/image-fdt.c b/common/image-fdt.c
index 5e4e5bd..41aaa0d 100644
--- a/common/image-fdt.c
+++ b/common/image-fdt.c
@@ -379,6 +379,10 @@ int boot_get_fdt(int flag, int argc, char * const argv[], uint8_t arch,
 				       (long)fdt_addr);
 			}
 			break;
+#ifdef CONFIG_ANDROID_BOOT_IMAGE
+		case IMAGE_FORMAT_ANDROID:
+			goto no_fdt;
+#endif
 		default:
 			puts("ERROR: Did not find a cmdline Flattened Device Tree\n");
 			goto no_fdt;
-- 
2.1.4

[PATCH v1 2/6] ARM: bootm: Try to use relocated ramdisk

[Jeffy Chen]

After boot_ramdisk_high(), ramdisk would be relocated to
initrd_start & initrd_end, so use them instead of rd_start & rd_end.

Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---

 arch/arm/lib/bootm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index a477cae..ac94995 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -225,7 +225,10 @@ static void boot_prep_linux(bootm_headers_t *images)
 		if (BOOTM_ENABLE_MEMORY_TAGS)
 			setup_memory_tags(gd->bd);
 		if (BOOTM_ENABLE_INITRD_TAG) {
-			if (images->rd_start && images->rd_end) {
+			if (images->initrd_start && images->initrd_end) {
+				setup_initrd_tag(gd->bd, images->initrd_start,
+						 images->initrd_end);
+			} else if (images->rd_start && images->rd_end) {
 				setup_initrd_tag(gd->bd, images->rd_start,
 						 images->rd_end);
 			}
-- 
2.1.4

[PATCH v1 3/6] rockchip: rk3036: Bind GPIO banks

[Jeffy Chen]

Call dm_scan_fdt_node() in rk3036 pinctrl uclass binding.

Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---

 drivers/pinctrl/rockchip/pinctrl_rk3036.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3036.c b/drivers/pinctrl/rockchip/pinctrl_rk3036.c
index 581b096..1f78bf8 100644
--- a/drivers/pinctrl/rockchip/pinctrl_rk3036.c
+++ b/drivers/pinctrl/rockchip/pinctrl_rk3036.c
@@ -15,6 +15,7 @@
 #include <asm/arch/hardware.h>
 #include <asm/arch/periph.h>
 #include <dm/pinctrl.h>
+#include <dm/root.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -252,6 +253,12 @@ static struct pinctrl_ops rk3036_pinctrl_ops = {
 	.get_periph_id	= rk3036_pinctrl_get_periph_id,
 };
 
+static int rk3036_pinctrl_bind(struct udevice *dev)
+{
+	/* scan child GPIO banks */
+	return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false);
+}
+
 static int rk3036_pinctrl_probe(struct udevice *dev)
 {
 	struct rk3036_pinctrl_priv *priv = dev_get_priv(dev);
@@ -272,5 +279,6 @@ U_BOOT_DRIVER(pinctrl_rk3036) = {
 	.of_match	= rk3036_pinctrl_ids,
 	.priv_auto_alloc_size = sizeof(struct rk3036_pinctrl_priv),
 	.ops		= &rk3036_pinctrl_ops,
+	.bind		= rk3036_pinctrl_bind,
 	.probe		= rk3036_pinctrl_probe,
 };
-- 
2.1.4

[PATCH v1 4/6] rockchip: kylin: Add default gpt partition table

[Jeffy Chen]

Add default android gpt partition table for kylin board.

Use "gpt write mmc 0 $partitions" to apply.

Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---

 include/configs/kylin_rk3036.h | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/include/configs/kylin_rk3036.h b/include/configs/kylin_rk3036.h
index aa07889..b750b26 100644
--- a/include/configs/kylin_rk3036.h
+++ b/include/configs/kylin_rk3036.h
@@ -9,4 +9,33 @@
 
 #include <configs/rk3036_common.h>
 
+#ifndef CONFIG_SPL_BUILD
+
+/* Enable gpt partition table */
+#define CONFIG_CMD_GPT
+#define CONFIG_RANDOM_UUID
+#define CONFIG_EFI_PARTITION
+#define PARTS_DEFAULT \
+	"uuid_disk=${uuid_gpt_disk};" \
+	"name=loader,start=32K,size=4000K,uuid=${uuid_gpt_loader};" \
+	"name=reserved,size=64K,uuid=${uuid_gpt_reserved};" \
+	"name=misc,size=4M,uuid=${uuid_gpt_misc};" \
+	"name=recovery,size=32M,uuid=${uuid_gpt_recovery};" \
+	"name=boot_a,size=32M,uuid=${uuid_gpt_boot_a};" \
+	"name=boot_b,size=32M,uuid=${uuid_gpt_boot_b};" \
+	"name=system_a,size=818M,uuid=${uuid_gpt_system_a};" \
+	"name=system_b,size=818M,uuid=${uuid_gpt_system_b};" \
+	"name=vendor_a,size=50M,uuid=${uuid_gpt_vendor_a};" \
+	"name=vendor_b,size=50M,uuid=${uuid_gpt_vendor_b};" \
+	"name=cache,size=100M,uuid=${uuid_gpt_cache};" \
+	"name=metadata,size=16M,uuid=${uuid_gpt_metadata};" \
+	"name=persist,size=4M,uuid=${uuid_gpt_persist};" \
+	"name=userdata,size=-,uuid=${uuid_gpt_userdata};\0" \
+
+#undef CONFIG_EXTRA_ENV_SETTINGS
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"partitions=" PARTS_DEFAULT \
+
+#endif
+
 #endif
-- 
2.1.4

[PATCH v1 5/6] rockchip: kylin: Enable boot with android boot image

[Jeffy Chen]

The android kernel is using appended dtb by default, and store
ramdisk right after kernel & dtb.
So we needs to relocate ramdisk, and use atags to pass params.

Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---

 include/configs/kylin_rk3036.h | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/include/configs/kylin_rk3036.h b/include/configs/kylin_rk3036.h
index b750b26..49997ec 100644
--- a/include/configs/kylin_rk3036.h
+++ b/include/configs/kylin_rk3036.h
@@ -35,6 +35,29 @@
 #undef CONFIG_EXTRA_ENV_SETTINGS
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	"partitions=" PARTS_DEFAULT \
+	"mmcdev=0\0" \
+	"mmcpart=5\0" \
+	"loadaddr=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
+
+#define CONFIG_ANDROID_BOOT_IMAGE
+#define CONFIG_SYS_BOOT_RAMDISK_HIGH
+#define CONFIG_SYS_HUSH_PARSER
+
+#undef CONFIG_BOOTCOMMAND
+#define CONFIG_BOOTCOMMAND \
+	"mmc dev ${mmcdev}; if mmc rescan; then " \
+		"part start mmc ${mmcdev} ${mmcpart} boot_start;" \
+		"part size mmc ${mmcdev} ${mmcpart} boot_size;" \
+		"mmc read ${loadaddr} ${boot_start} ${boot_size};" \
+		"bootm start ${loadaddr}; bootm ramdisk;" \
+		"bootm prep; bootm go;" \
+	"fi;" \
+
+/* Enable atags */
+#define CONFIG_SYS_BOOTPARAMS_LEN	(64*1024)
+#define CONFIG_INITRD_TAG
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_CMDLINE_TAG
 
 #endif
 
-- 
2.1.4

[PATCH v1 6/6] rockchip: kylin: Check fastboot request

[Jeffy Chen]

We will save boot mode flag in grf's os_reg[0], if fastboot
requested or fastboot key pressed, try to enter fastboot mode
at preboot stage.

Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---

 board/kylin/kylin_rk3036/kylin_rk3036.c | 32 ++++++++++++++++++++++++++++++++
 include/configs/kylin_rk3036.h          |  3 +++
 2 files changed, 35 insertions(+)

diff --git a/board/kylin/kylin_rk3036/kylin_rk3036.c b/board/kylin/kylin_rk3036/kylin_rk3036.c
index 40d6b52..df2c123 100644
--- a/board/kylin/kylin_rk3036/kylin_rk3036.c
+++ b/board/kylin/kylin_rk3036/kylin_rk3036.c
@@ -8,10 +8,15 @@
 #include <dm.h>
 #include <asm/io.h>
 #include <asm/arch/uart.h>
+#include <asm/arch-rockchip/grf_rk3036.h>
 #include <asm/arch/sdram_rk3036.h>
+#include <asm/gpio.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#define GRF_BASE	0x20008000
+static struct rk3036_grf * const grf = (void *)GRF_BASE;
+
 void get_ddr_config(struct rk3036_ddr_config *config)
 {
 	/* K4B4G1646Q config */
@@ -28,6 +33,33 @@ void get_ddr_config(struct rk3036_ddr_config *config)
 	config->bw = 1;
 }
 
+#define FASTBOOT_KEY_GPIO 93
+#define ROCKCHIP_BOOT_MODE_NORMAL	0
+#define ROCKCHIP_BOOT_MODE_FASTBOOT	1
+
+int fastboot_key_pressed(void)
+{
+	gpio_request(FASTBOOT_KEY_GPIO, "fastboot_key");
+	gpio_direction_input(FASTBOOT_KEY_GPIO);
+	return !gpio_get_value(FASTBOOT_KEY_GPIO);
+}
+
+int board_late_init(void)
+{
+	int boot_mode = readl(&grf->os_reg[0]);
+
+	/* Clear boot mode */
+	writel(ROCKCHIP_BOOT_MODE_NORMAL, &grf->os_reg[0]);
+
+	if (boot_mode == ROCKCHIP_BOOT_MODE_FASTBOOT ||
+	    fastboot_key_pressed()) {
+		printf("enter fastboot!\n");
+		setenv("preboot", "setenv preboot; fastboot usb0");
+	}
+
+	return 0;
+}
+
 int board_init(void)
 {
 	return 0;
diff --git a/include/configs/kylin_rk3036.h b/include/configs/kylin_rk3036.h
index 49997ec..424e81b 100644
--- a/include/configs/kylin_rk3036.h
+++ b/include/configs/kylin_rk3036.h
@@ -39,6 +39,9 @@
 	"mmcpart=5\0" \
 	"loadaddr=" __stringify(CONFIG_SYS_LOAD_ADDR) "\0" \
 
+#define CONFIG_BOARD_LATE_INIT
+#define CONFIG_PREBOOT
+
 #define CONFIG_ANDROID_BOOT_IMAGE
 #define CONFIG_SYS_BOOT_RAMDISK_HIGH
 #define CONFIG_SYS_HUSH_PARSER
-- 
2.1.4

Re: [PATCH v1 1/6] common/image-fdt.c: Make boot_get_fdt() perform a check for Android images

[Simon Glass]

On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen@rock-chips.com> wrote:
> Android images don't have a fdt.
>
> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
> ---
>
>  common/image-fdt.c | 4 ++++
>  1 file changed, 4 insertions(+)

Acked-by: Simon Glass <sjg@chromium.org>

Re: [PATCH v1 2/6] ARM: bootm: Try to use relocated ramdisk

[Simon Glass]

Hi Jeffy,

On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen@rock-chips.com> wrote:
> After boot_ramdisk_high(), ramdisk would be relocated to
> initrd_start & initrd_end, so use them instead of rd_start & rd_end.
>
> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
> ---
>
>  arch/arm/lib/bootm.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
> index a477cae..ac94995 100644
> --- a/arch/arm/lib/bootm.c
> +++ b/arch/arm/lib/bootm.c
> @@ -225,7 +225,10 @@ static void boot_prep_linux(bootm_headers_t *images)
>                 if (BOOTM_ENABLE_MEMORY_TAGS)
>                         setup_memory_tags(gd->bd);
>                 if (BOOTM_ENABLE_INITRD_TAG) {
> -                       if (images->rd_start && images->rd_end) {
> +                       if (images->initrd_start && images->initrd_end) {
> +                               setup_initrd_tag(gd->bd, images->initrd_start,
> +                                                images->initrd_end);
> +                       } else if (images->rd_start && images->rd_end) {

Can you please add comments to these members (initrd_start/end) in
image.h? At present it is not clear what they are, compared to
rd_start/end.

>                                 setup_initrd_tag(gd->bd, images->rd_start,
>                                                  images->rd_end);
>                         }
> --
> 2.1.4
>
>

Regards,
Simon

Re: [PATCH v1 3/6] rockchip: rk3036: Bind GPIO banks

[Simon Glass]

On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen@rock-chips.com> wrote:
> Call dm_scan_fdt_node() in rk3036 pinctrl uclass binding.
>
> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
> ---
>
>  drivers/pinctrl/rockchip/pinctrl_rk3036.c | 8 ++++++++
>  1 file changed, 8 insertions(+)

Acked-by: Simon Glass <sjg@chromium.org>

Re: [PATCH v1 4/6] rockchip: kylin: Add default gpt partition table

[Simon Glass]

On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen@rock-chips.com> wrote:
> Add default android gpt partition table for kylin board.
>
> Use "gpt write mmc 0 $partitions" to apply.
>
> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
> ---
>
>  include/configs/kylin_rk3036.h | 29 +++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)

Acked-by: Simon Glass <sjg@chromium.org>

Re: [PATCH v1 5/6] rockchip: kylin: Enable boot with android boot image

[Simon Glass]

Hi Jeffy,

On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
> The android kernel is using appended dtb by default, and store
> ramdisk right after kernel & dtb.
> So we needs to relocate ramdisk, and use atags to pass params.
>
> Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
> ---
>
>  include/configs/kylin_rk3036.h | 23 +++++++++++++++++++++++
>  1 file changed, 23 insertions(+)

Acked-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>

What kernel version are you using?

Regards,
Simon

Re: [PATCH v1 6/6] rockchip: kylin: Check fastboot request

[Simon Glass]

On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
> We will save boot mode flag in grf's os_reg[0], if fastboot
> requested or fastboot key pressed, try to enter fastboot mode
> at preboot stage.
>
> Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
> ---
>
>  board/kylin/kylin_rk3036/kylin_rk3036.c | 32 ++++++++++++++++++++++++++++++++
>  include/configs/kylin_rk3036.h          |  3 +++
>  2 files changed, 35 insertions(+)

Acked-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>

Re: [PATCH v1 5/6] rockchip: kylin: Enable boot with android boot image

[Jeffy Chen]

Hi Simon,

On 2016-1-8 11:34, Simon Glass wrote:
> Hi Jeffy,
>
> On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
>> The android kernel is using appended dtb by default, and store
>> ramdisk right after kernel & dtb.
>> So we needs to relocate ramdisk, and use atags to pass params.
>>
>> Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
>> ---
>>
>>   include/configs/kylin_rk3036.h | 23 +++++++++++++++++++++++
>>   1 file changed, 23 insertions(+)
> Acked-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>
> What kernel version are you using?
It's kernel v4.1 for android project:
git fetch 
https://android.googlesource.com/platform/hardware/bsp/kernel/common/v4.1 refs/changes/03/188603/5 
&& git checkout FETCH_HEAD :)
>
> Regards,
> Simon
>

On 2016-1-8 11:34, Simon Glass wrote:
> Hi Jeffy,
>
> On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
>> The android kernel is using appended dtb by default, and store
>> ramdisk right after kernel & dtb.
>> So we needs to relocate ramdisk, and use atags to pass params.
>>
>> Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
>> ---
>>
>>   include/configs/kylin_rk3036.h | 23 +++++++++++++++++++++++
>>   1 file changed, 23 insertions(+)
> Acked-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>
> What kernel version are you using?
>
> Regards,
> Simon
>

Re: [PATCH v1 5/6] rockchip: kylin: Enable boot with android boot image

[Simon Glass]

Hi Jeffy,

On 8 January 2016 at 03:51, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
> Hi Simon,
>
> On 2016-1-8 11:34, Simon Glass wrote:
>>
>> Hi Jeffy,
>>
>> On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
>>>
>>> The android kernel is using appended dtb by default, and store
>>> ramdisk right after kernel & dtb.
>>> So we needs to relocate ramdisk, and use atags to pass params.
>>>
>>> Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
>>> ---
>>>
>>>   include/configs/kylin_rk3036.h | 23 +++++++++++++++++++++++
>>>   1 file changed, 23 insertions(+)
>>
>> Acked-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>>
>> What kernel version are you using?
>
> It's kernel v4.1 for android project:
> git fetch
> https://android.googlesource.com/platform/hardware/bsp/kernel/common/v4.1
> refs/changes/03/188603/5 && git checkout FETCH_HEAD :)

OK - just wondered why it needs ATAGs (CONFIG_SETUP_MEMORY_TAGS) - are
there things that device tree does not support?

>>
>>
>> Regards,
>> Simon
>>
>
> On 2016-1-8 11:34, Simon Glass wrote:
>>
>> Hi Jeffy,
>>
>> On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
>>>
>>> The android kernel is using appended dtb by default, and store
>>> ramdisk right after kernel & dtb.
>>> So we needs to relocate ramdisk, and use atags to pass params.
>>>
>>> Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
>>> ---
>>>
>>>   include/configs/kylin_rk3036.h | 23 +++++++++++++++++++++++
>>>   1 file changed, 23 insertions(+)
>>
>> Acked-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>>
>> What kernel version are you using?
>>
>> Regards,
>> Simon
>>
>

Regards,
Simon

Re: [PATCH v1 5/6] rockchip: kylin: Enable boot with android boot image

[Jeffy Chen]

Hi Simon,

On 2016-1-12 0:58, Simon Glass wrote:
> Hi Jeffy,
>
> On 8 January 2016 at 03:51, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
>> Hi Simon,
>>
>> On 2016-1-8 11:34, Simon Glass wrote:
>>> Hi Jeffy,
>>>
>>> On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
>>>> The android kernel is using appended dtb by default, and store
>>>> ramdisk right after kernel & dtb.
>>>> So we needs to relocate ramdisk, and use atags to pass params.
>>>>
>>>> Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
>>>> ---
>>>>
>>>>    include/configs/kylin_rk3036.h | 23 +++++++++++++++++++++++
>>>>    1 file changed, 23 insertions(+)
>>> Acked-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>>>
>>> What kernel version are you using?
>> It's kernel v4.1 for android project:
>> git fetch
>> https://android.googlesource.com/platform/hardware/bsp/kernel/common/v4.1
>> refs/changes/03/188603/5 && git checkout FETCH_HEAD :)
> OK - just wondered why it needs ATAGs (CONFIG_SETUP_MEMORY_TAGS) - are
> there things that device tree does not support?
I saw our guys used to detect ddr params in the loader, and pass memory 
areas and reserved areas to kernel...
and kernel's device tree would only define a common memory node in the 
dtsi, which is not match the actually memory.
>   used to
>
>>>
>>> Regards,
>>> Simon
>>>
>> On 2016-1-8 11:34, Simon Glass wrote:
>>> Hi Jeffy,
>>>
>>> On 4 January 2016 at 00:50, Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org> wrote:
>>>> The android kernel is using appended dtb by default, and store
>>>> ramdisk right after kernel & dtb.
>>>> So we needs to relocate ramdisk, and use atags to pass params.
>>>>
>>>> Signed-off-by: Jeffy Chen <jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
>>>> ---
>>>>
>>>>    include/configs/kylin_rk3036.h | 23 +++++++++++++++++++++++
>>>>    1 file changed, 23 insertions(+)
>>> Acked-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>>>
>>> What kernel version are you using?
>>>
>>> Regards,
>>> Simon
>>>
> Regards,
> Simon
>